AC_PREFIX_DEFAULT([/usr])
+dnl libblkid version definition
+dnl -----------------------------
+BLKID_VERSION_MAJOR=1
+BLKID_VERSION_MINOR=41
+BLKID_VERSION_RELEASE=0
+BLKID_DATE="10-Jul-2008"
+
+BLKID_VERSION=$BLKID_VERSION_MAJOR.$BLKID_VERSION_MINOR.$BLKID_VERSION_RELEASE
+
+AC_SUBST(BLKID_VERSION_MAJOR)
+AC_SUBST(BLKID_VERSION_MINOR)
+AC_SUBST(BLKID_VERSION_RELEASE)
+AC_SUBST(BLKID_VERSION)
+
+AC_DEFINE_UNQUOTED(BLKID_VERSION, "$BLKID_VERSION", [libblkid version string])
+AC_DEFINE_UNQUOTED(BLKID_DATE, "$BLKID_DATE", [libblkid date string])
+
# Check whether exec_prefix=/usr:
case $exec_prefix:$prefix in
NONE:NONE | NONE:/usr | /usr:*)
AC_GNU_SOURCE
AC_CANONICAL_HOST
AC_C_BIGENDIAN
+AC_PROG_RANLIB
linux_os=no
case ${host_os} in
#endif
])
AC_CHECK_HEADERS(
- [scsi/scsi.h \
+ [err.h \
+ errno.h \
+ getopt.h \
langinfo.h \
+ linux/fd.h \
+ linux/tiocl.h \
+ linux/version.h \
locale.h \
- sys/user.h \
+ pty.h \
rpcsvc/nfs_prot.h \
+ scsi/scsi.h \
+ stdlib.h \
+ sys/disk.h \
+ sys/disklabel.h \
+ sys/ioctl.h \
sys/io.h \
- pty.h \
- err.h \
- linux/tiocl.h \
- linux/version.h])
+ sys/mkdev.h \
+ sys/prctl.h \
+ sys/queue.h \
+ sys/stat.h \
+ sys/types.h \
+ sys/user.h \
+ unistd.h ])
AC_CHECK_HEADERS([linux/raw.h],
[AM_CONDITIONAL([HAVE_RAW], [true])],
[AM_CONDITIONAL([HAVE_RAW], [false])])
personality \
updwtmp \
lchown \
+ llseek \
+ lseek64 \
+ strtoull \
inotify_init \
+ prctl \
+ __secure_getenv \
rpmatch])
AC_FUNC_FSEEKO
# TODO remove devmapper from blkid
#
-STATIC_BLKID_DEVMAPPER_LIBS=''
AC_ARG_ENABLE([blkid-devmapper],
AS_HELP_STRING([--enable-blkid-devmapper], [build with device-mapper support]),
[], with_blkid-devmapper=no
)
if test x$with_devmapper = xno; then
+ AC_MSG_RESULT([Disabling device-mapper support])
AM_CONDITIONAL(HAVE_DEVMAPPER, false)
DEVMAPPER_LIBS_STATIC=''
DEVMAPPER_REQ=''
DEVMAPPER_PC_LIBS=''
+ DEVMAPPER_LIBS=''
else
+ AC_MSG_RESULT([Enabling device-mapper support])
UTIL_CHECK_LIB(devmapper, dm_tree_create)
case $with_blkid-devmapper:$have_blkid-devmapper in
yes:no) AC_MSG_ERROR([devmapper selected but libdevmapper not found]);;
esac
UTIL_PKG_STATIC([DEVMAPPER_LIBS_STATIC], [devmapper])
+ DEVMAPPER_LIBS="-ldevmapper"
DEVMAPPER_REQ="devmapper"
DEVMAPPER_PC_LIBS="-ldevmapper"
esac
fi
-AC_SUBST(DEVMAPPER_REQ)
-AC_SUBST(DEVMAPPER_PC_LIBS)
-AC_SUBST(DEVMAPPER_LIBS_STATIC)
+AC_SUBST([DEVMAPPER_LIBS])
+AC_SUBST([DEVMAPPER_REQ])
+AC_SUBST([DEVMAPPER_PC_LIBS])
+AC_SUBST([DEVMAPPER_LIBS_STATIC])
AC_ARG_ENABLE([schedutils],
include/Makefile
lib/Makefile
libs/Makefile
-libs/blkid/Makefile
libs/blkid/blkid.pc
+libs/blkid/libblkid.3
+libs/blkid/Makefile
+libs/blkid/src/blkid_types.h
+libs/blkid/src/Makefile
login-utils/Makefile
misc-utils/Makefile
mount/Makefile
include $(top_srcdir)/config/include-Makefile.am
+SUBDIRS = src
+
# pkg-config stuff
pkgconfigdir = $(usrlibexecdir)/pkgconfig
pkgconfig_DATA = blkid.pc
-EXTRA_DIST = README.blkid blkid.pc blkid.pc.in
+dist_man_MANS = libblkid.3
+
+EXTRA_DIST = README.blkid blkid.pc blkid.pc.in libblkid.3.in
+
Name: blkid
Description: Block device id library
-Version: @VERSION@
+Version: @BLKID_VERSION@
Requires: uuid @DEVMAPPER_REQ@
Cflags: -I${includedir}
Libs: -L${libdir} -lblkid
--- /dev/null
+.\" Copyright 2001 Andreas Dilger (adilger@turbolinux.com)
+.\"
+.\" This man page was created for libblkid.so.1.0 from e2fsprogs-1.24.
+.\"
+.\" This file may be copied under the terms of the GNU Public License.
+.\"
+.\" Created Wed Sep 14 12:02:12 2001, Andreas Dilger
+.TH LIBBLKID 3 "@E2FSPROGS_MONTH@ @E2FSPROGS_YEAR@" "E2fsprogs version @E2FSPROGS_VERSION@"
+.SH NAME
+libblkid \- block device identification library
+.SH SYNOPSIS
+.B #include <blkid/blkid.h>
+.sp
+.B cc
+.I file.c
+.B \-lblkid
+.SH DESCRIPTION
+The
+.B libblkid
+library is used to identify block devices (disks) as to their content (e.g.
+filesystem type) as well as extracting additional information such as
+filesystem labels/volume names, unique identifiers/serial numbers, etc.
+A common use is to allow use of LABEL= and UUID= tags instead of hard-coding
+specific block device names into configuration files.
+.P
+Block device information is normally kept in a cache file
+.I /etc/blkid.tab
+and is verified to still be valid before being returned to the user
+(if the user has read permission on the raw block device, otherwise not).
+The cache file also allows unprivileged users (normally anyone other
+than root, or those not in the "disk" group) to locate devices by label/id.
+The standard location of the cache file can be overridden by the
+environment variable BLKID_FILE.
+.P
+In situations where one is getting information about a single known device,
+it does not impact performance whether the cache is used or not (unless you
+are not able to read the block device directly). If you are dealing with
+multiple devices, use of the cache is highly recommended (even if empty) as
+devices will be scanned at most one time and the on-disk cache will be
+updated if possible. There is rarely a reason not to use the cache.
+.P
+In some cases (modular kernels), block devices are not even visible until
+after they are accessed the first time, so it is critical that there is
+some way to locate these devices without enumerating only visible devices,
+so the use of the cache file is
+.B required
+in this situation.
+.SH AUTHOR
+.B libblkid
+was written by Andreas Dilger for the ext2 filesystem utilties, with input
+from Ted Ts'o. The library was subsequently heavily modified by Ted Ts'o.
+.SH FILES
+.TP
+.I /etc/blkid.tab
+Caches data extracted from each recognized block device.
+.SH AVAILABILITY
+.B libblkid
+is part of the e2fsprogs package since version 1.33 and is available from
+http://e2fsprogs.sourceforge.net.
+.SH COPYING
+.B libblkid
+is available under the terms of the GNU Library General Public License (LGPL),
+version 2 (or at your discretion any later version). A copy of the LGPL
+should be included with this library in the file COPYING. If not, write to
+.RS
+Free Software Foundation, Inc.
+.br
+51 Franklin St
+.br
+Fifth Floor
+.br
+Boston, MA 02110-1301 USA
+.RE
+.PP
+or visit
+.UR http://www.gnu.org/licenses/licenses.html#LGPL
+http://www.gnu.org/licenses/licenses.html#LGPL
+.UE
+.SH "SEE ALSO"
+.BR blkid (8)
--- /dev/null
+include $(top_srcdir)/config/include-Makefile.am
+
+AM_CPPFLAGS += -I$(top_builddir)/blkid/src
+
+# static library
+lib_LIBRARIES = libblkid.a
+libblkid_a_SOURCES = cache.c dev.c devname.c devno.c getsize.c llseek.c \
+ probe.c read.c resolve.c save.c tag.c version.c \
+ blkid.h blkidP.h list.h
+libblkid_a_CFLAGS = -fPIC
+
+# shared library (note that we don't use LIBTOOL!)
+blkid_IMAGE = libblkid.so
+blkid_LDSCRIPT = $(srcdir)/blkid.sym
+blkid_LIB = $(blkid_IMAGE).$(BLKID_VERSION)
+blkid_SONAME = $(blkid_IMAGE).$(BLKID_VERSION_MAJOR)
+blkid_LINKS = $(blkid_IMAGE) $(blkid_SONAME)
+
+if HAVE_DEVMAPPER
+blkid_OTHERLDADD = $(DEVMAPPER_LIBS)
+endif
+
+EXTRA_DIST = blkid.sym
+
+all-local: $(blkid_LIB)
+
+$(blkid_LIB): $(lib_LIBRARIES) $(blkid_LDSCRIPT)
+ $(CC) --shared -o $(blkid_LIB) $(AM_LDFLAGS) \
+ -Wl,-soname,$(blkid_SONAME),--version-script,$(blkid_LDSCRIPT) \
+ $(blkid_a_OBJECTS) $(blkid_OTHERLDADD)
+ for I in $(blkid_LINKS); do \
+ ln -sf $(blkid_LIB) $$I; \
+ done
+
+clean-local:
+ rm -f $(blkid_LIB) $(blkid_LINKS)
+
+installdirs-local:
+ $(MKDIR_P) $(DESTDIR)$(libdir)
+
+install-exec-hook:
+ $(INSTALL_PROGRAM) $(blkid_LIB) $(DESTDIR)$(libdir)
+ for I in $(blkid_LINKS); do \
+ cd $(DESTDIR)$(libdir) && ln -sf $(blkid_LIB) $$I; \
+ done
+
+uninstall-hook:
+ rm -f $(DESTDIR)$(libdir)/$(blkid_LIB)
+ for I in $(blkid_LINKS); do \
+ cd $(DESTDIR)$(libdir) && rm -f $(blkid_LIB) $$I; \
+ done
+
--- /dev/null
+/*
+ * blkid.h - Interface for libblkid, a library to identify block devices
+ *
+ * Copyright (C) 2001 Andreas Dilger
+ * Copyright (C) 2003 Theodore Ts'o
+ *
+ * %Begin-Header%
+ * This file may be redistributed under the terms of the
+ * GNU Lesser General Public License.
+ * %End-Header%
+ */
+
+#ifndef _BLKID_BLKID_H
+#define _BLKID_BLKID_H
+
+#include <sys/types.h>
+#include <blkid/blkid_types.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct blkid_struct_dev *blkid_dev;
+typedef struct blkid_struct_cache *blkid_cache;
+typedef __s64 blkid_loff_t;
+
+typedef struct blkid_struct_tag_iterate *blkid_tag_iterate;
+typedef struct blkid_struct_dev_iterate *blkid_dev_iterate;
+
+/*
+ * Flags for blkid_get_dev
+ *
+ * BLKID_DEV_CREATE Create an empty device structure if not found
+ * in the cache.
+ * BLKID_DEV_VERIFY Make sure the device structure corresponds
+ * with reality.
+ * BLKID_DEV_FIND Just look up a device entry, and return NULL
+ * if it is not found.
+ * BLKID_DEV_NORMAL Get a valid device structure, either from the
+ * cache or by probing the device.
+ */
+#define BLKID_DEV_FIND 0x0000
+#define BLKID_DEV_CREATE 0x0001
+#define BLKID_DEV_VERIFY 0x0002
+#define BLKID_DEV_NORMAL (BLKID_DEV_CREATE | BLKID_DEV_VERIFY)
+
+/* cache.c */
+extern void blkid_put_cache(blkid_cache cache);
+extern int blkid_get_cache(blkid_cache *cache, const char *filename);
+extern void blkid_gc_cache(blkid_cache cache);
+
+/* dev.c */
+extern const char *blkid_dev_devname(blkid_dev dev);
+
+extern blkid_dev_iterate blkid_dev_iterate_begin(blkid_cache cache);
+extern int blkid_dev_set_search(blkid_dev_iterate iter,
+ char *search_type, char *search_value);
+extern int blkid_dev_next(blkid_dev_iterate iterate, blkid_dev *dev);
+extern void blkid_dev_iterate_end(blkid_dev_iterate iterate);
+
+/* devno.c */
+extern char *blkid_devno_to_devname(dev_t devno);
+
+/* devname.c */
+extern int blkid_probe_all(blkid_cache cache);
+extern int blkid_probe_all_new(blkid_cache cache);
+extern blkid_dev blkid_get_dev(blkid_cache cache, const char *devname,
+ int flags);
+
+/* getsize.c */
+extern blkid_loff_t blkid_get_dev_size(int fd);
+
+/* probe.c */
+int blkid_known_fstype(const char *fstype);
+extern blkid_dev blkid_verify(blkid_cache cache, blkid_dev dev);
+
+/* read.c */
+
+/* resolve.c */
+extern char *blkid_get_tag_value(blkid_cache cache, const char *tagname,
+ const char *devname);
+extern char *blkid_get_devname(blkid_cache cache, const char *token,
+ const char *value);
+
+/* tag.c */
+extern blkid_tag_iterate blkid_tag_iterate_begin(blkid_dev dev);
+extern int blkid_tag_next(blkid_tag_iterate iterate,
+ const char **type, const char **value);
+extern void blkid_tag_iterate_end(blkid_tag_iterate iterate);
+extern int blkid_dev_has_tag(blkid_dev dev, const char *type,
+ const char *value);
+extern blkid_dev blkid_find_dev_with_tag(blkid_cache cache,
+ const char *type,
+ const char *value);
+extern int blkid_parse_tag_string(const char *token, char **ret_type,
+ char **ret_val);
+
+/* version.c */
+extern int blkid_parse_version_string(const char *ver_string);
+extern int blkid_get_library_version(const char **ver_string,
+ const char **date_string);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _BLKID_BLKID_H */
--- /dev/null
+{ global:
+ blkid_dev_devname;
+ blkid_dev_has_tag;
+ blkid_dev_iterate_begin;
+ blkid_dev_iterate_end;
+ blkid_dev_next;
+ blkid_devno_to_devname;
+ blkid_dev_set_search;
+ blkid_find_dev_with_tag;
+ blkid_gc_cache;
+ blkid_get_cache;
+ blkid_get_dev;
+ blkid_get_devname;
+ blkid_get_dev_size;
+ blkid_get_library_version;
+ blkid_get_tag_value;
+ blkid_known_fstype;
+ blkid_parse_tag_string;
+ blkid_parse_version_string;
+ blkid_probe_all;
+ blkid_probe_all_new;
+ blkid_put_cache;
+ blkid_tag_iterate_begin;
+ blkid_tag_iterate_end;
+ blkid_tag_next;
+ blkid_verify;
+local:
+ *;
+};
--- /dev/null
+/*
+ * blkidP.h - Internal interfaces for libblkid
+ *
+ * Copyright (C) 2001 Andreas Dilger
+ * Copyright (C) 2003 Theodore Ts'o
+ *
+ * %Begin-Header%
+ * This file may be redistributed under the terms of the
+ * GNU Lesser General Public License.
+ * %End-Header%
+ */
+
+#ifndef _BLKID_BLKIDP_H
+#define _BLKID_BLKIDP_H
+
+#include <sys/types.h>
+#include <stdio.h>
+
+#include <blkid/blkid.h>
+#include <list.h>
+
+#ifdef __GNUC__
+#define __BLKID_ATTR(x) __attribute__(x)
+#else
+#define __BLKID_ATTR(x)
+#endif
+
+
+/*
+ * This describes the attributes of a specific device.
+ * We can traverse all of the tags by bid_tags (linking to the tag bit_names).
+ * The bid_label and bid_uuid fields are shortcuts to the LABEL and UUID tag
+ * values, if they exist.
+ */
+struct blkid_struct_dev
+{
+ struct list_head bid_devs; /* All devices in the cache */
+ struct list_head bid_tags; /* All tags for this device */
+ blkid_cache bid_cache; /* Dev belongs to this cache */
+ char *bid_name; /* Device inode pathname */
+ char *bid_type; /* Preferred device TYPE */
+ int bid_pri; /* Device priority */
+ dev_t bid_devno; /* Device major/minor number */
+ time_t bid_time; /* Last update time of device */
+ unsigned int bid_flags; /* Device status bitflags */
+ char *bid_label; /* Shortcut to device LABEL */
+ char *bid_uuid; /* Shortcut to binary UUID */
+};
+
+#define BLKID_BID_FL_VERIFIED 0x0001 /* Device data validated from disk */
+#define BLKID_BID_FL_INVALID 0x0004 /* Device is invalid */
+
+/*
+ * Each tag defines a NAME=value pair for a particular device. The tags
+ * are linked via bit_names for a single device, so that traversing the
+ * names list will get you a list of all tags associated with a device.
+ * They are also linked via bit_values for all devices, so one can easily
+ * search all tags with a given NAME for a specific value.
+ */
+struct blkid_struct_tag
+{
+ struct list_head bit_tags; /* All tags for this device */
+ struct list_head bit_names; /* All tags with given NAME */
+ char *bit_name; /* NAME of tag (shared) */
+ char *bit_val; /* value of tag */
+ blkid_dev bit_dev; /* pointer to device */
+};
+typedef struct blkid_struct_tag *blkid_tag;
+
+/*
+ * Minimum number of seconds between device probes, even when reading
+ * from the cache. This is to avoid re-probing all devices which were
+ * just probed by another program that does not share the cache.
+ */
+#define BLKID_PROBE_MIN 2
+
+/*
+ * Time in seconds an entry remains verified in the in-memory cache
+ * before being reverified (in case of long-running processes that
+ * keep a cache in memory and continue to use it for a long time).
+ */
+#define BLKID_PROBE_INTERVAL 200
+
+/* This describes an entire blkid cache file and probed devices.
+ * We can traverse all of the found devices via bic_list.
+ * We can traverse all of the tag types by bic_tags, which hold empty tags
+ * for each tag type. Those tags can be used as list_heads for iterating
+ * through all devices with a specific tag type (e.g. LABEL).
+ */
+struct blkid_struct_cache
+{
+ struct list_head bic_devs; /* List head of all devices */
+ struct list_head bic_tags; /* List head of all tag types */
+ time_t bic_time; /* Last probe time */
+ time_t bic_ftime; /* Mod time of the cachefile */
+ unsigned int bic_flags; /* Status flags of the cache */
+ char *bic_filename; /* filename of cache */
+};
+
+#define BLKID_BIC_FL_PROBED 0x0002 /* We probed /proc/partition devices */
+#define BLKID_BIC_FL_CHANGED 0x0004 /* Cache has changed from disk */
+
+extern char *blkid_strdup(const char *s);
+extern char *blkid_strndup(const char *s, const int length);
+
+#define BLKID_CACHE_FILE "/etc/blkid.tab"
+extern const char *blkid_devdirs[];
+
+#define BLKID_ERR_IO 5
+#define BLKID_ERR_PROC 9
+#define BLKID_ERR_MEM 12
+#define BLKID_ERR_CACHE 14
+#define BLKID_ERR_DEV 19
+#define BLKID_ERR_PARAM 22
+#define BLKID_ERR_BIG 27
+
+/*
+ * Priority settings for different types of devices
+ */
+#define BLKID_PRI_DM 40
+#define BLKID_PRI_EVMS 30
+#define BLKID_PRI_LVM 20
+#define BLKID_PRI_MD 10
+
+#if defined(TEST_PROGRAM) && !defined(CONFIG_BLKID_DEBUG)
+#define CONFIG_BLKID_DEBUG
+#endif
+
+#define DEBUG_CACHE 0x0001
+#define DEBUG_DUMP 0x0002
+#define DEBUG_DEV 0x0004
+#define DEBUG_DEVNAME 0x0008
+#define DEBUG_DEVNO 0x0010
+#define DEBUG_PROBE 0x0020
+#define DEBUG_READ 0x0040
+#define DEBUG_RESOLVE 0x0080
+#define DEBUG_SAVE 0x0100
+#define DEBUG_TAG 0x0200
+#define DEBUG_INIT 0x8000
+#define DEBUG_ALL 0xFFFF
+
+#ifdef CONFIG_BLKID_DEBUG
+#include <stdio.h>
+extern int blkid_debug_mask;
+#define DBG(m,x) if ((m) & blkid_debug_mask) x;
+#else
+#define DBG(m,x)
+#endif
+
+#ifdef CONFIG_BLKID_DEBUG
+extern void blkid_debug_dump_dev(blkid_dev dev);
+extern void blkid_debug_dump_tag(blkid_tag tag);
+#endif
+
+/* lseek.c */
+extern blkid_loff_t blkid_llseek(int fd, blkid_loff_t offset, int whence);
+
+/* read.c */
+extern void blkid_read_cache(blkid_cache cache);
+
+/* save.c */
+extern int blkid_flush_cache(blkid_cache cache);
+
+/*
+ * Functions to create and find a specific tag type: tag.c
+ */
+extern void blkid_free_tag(blkid_tag tag);
+extern blkid_tag blkid_find_tag_dev(blkid_dev dev, const char *type);
+extern int blkid_set_tag(blkid_dev dev, const char *name,
+ const char *value, const int vlength);
+
+/*
+ * Functions to create and find a specific tag type: dev.c
+ */
+extern blkid_dev blkid_new_dev(void);
+extern void blkid_free_dev(blkid_dev dev);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _BLKID_BLKIDP_H */
--- /dev/null
+/*
+ * If linux/types.h is already been included, assume it has defined
+ * everything we need. (cross fingers) Other header files may have
+ * also defined the types that we need.
+ */
+#if (!defined(_LINUX_TYPES_H) && !defined(_BLKID_TYPES_H) && \
+ !defined(_EXT2_TYPES_H))
+#define _BLKID_TYPES_H
+
+@ASM_TYPES_HEADER@
+
+#ifdef __U8_TYPEDEF
+typedef __U8_TYPEDEF __u8;
+#else
+typedef unsigned char __u8;
+#endif
+
+#ifdef __S8_TYPEDEF
+typedef __S8_TYPEDEF __s8;
+#else
+typedef signed char __s8;
+#endif
+
+#ifdef __U16_TYPEDEF
+typedef __U16_TYPEDEF __u16;
+#else
+#if (@SIZEOF_INT@ == 2)
+typedef unsigned int __u16;
+#else
+#if (@SIZEOF_SHORT@ == 2)
+typedef unsigned short __u16;
+#else
+ ?==error: undefined 16 bit type
+#endif /* SIZEOF_SHORT == 2 */
+#endif /* SIZEOF_INT == 2 */
+#endif /* __U16_TYPEDEF */
+
+#ifdef __S16_TYPEDEF
+typedef __S16_TYPEDEF __s16;
+#else
+#if (@SIZEOF_INT@ == 2)
+typedef int __s16;
+#else
+#if (@SIZEOF_SHORT@ == 2)
+typedef short __s16;
+#else
+ ?==error: undefined 16 bit type
+#endif /* SIZEOF_SHORT == 2 */
+#endif /* SIZEOF_INT == 2 */
+#endif /* __S16_TYPEDEF */
+
+
+#ifdef __U32_TYPEDEF
+typedef __U32_TYPEDEF __u32;
+#else
+#if (@SIZEOF_INT@ == 4)
+typedef unsigned int __u32;
+#else
+#if (@SIZEOF_LONG@ == 4)
+typedef unsigned long __u32;
+#else
+#if (@SIZEOF_SHORT@ == 4)
+typedef unsigned short __u32;
+#else
+ ?== error: undefined 32 bit type
+#endif /* SIZEOF_SHORT == 4 */
+#endif /* SIZEOF_LONG == 4 */
+#endif /* SIZEOF_INT == 4 */
+#endif /* __U32_TYPEDEF */
+
+#ifdef __S32_TYPEDEF
+typedef __S32_TYPEDEF __s32;
+#else
+#if (@SIZEOF_INT@ == 4)
+typedef int __s32;
+#else
+#if (@SIZEOF_LONG@ == 4)
+typedef long __s32;
+#else
+#if (@SIZEOF_SHORT@ == 4)
+typedef short __s32;
+#else
+ ?== error: undefined 32 bit type
+#endif /* SIZEOF_SHORT == 4 */
+#endif /* SIZEOF_LONG == 4 */
+#endif /* SIZEOF_INT == 4 */
+#endif /* __S32_TYPEDEF */
+
+#ifdef __U64_TYPEDEF
+typedef __U64_TYPEDEF __u64;
+#else
+#if (@SIZEOF_INT@ == 8)
+typedef unsigned int __u64;
+#else
+#if (@SIZEOF_LONG@ == 8)
+typedef unsigned long __u64;
+#else
+#if (@SIZEOF_LONG_LONG@ == 8)
+typedef unsigned long long __u64;
+#endif /* SIZEOF_LONG_LONG == 8 */
+#endif /* SIZEOF_LONG == 8 */
+#endif /* SIZEOF_INT == 8 */
+#endif /* __U64_TYPEDEF */
+
+#ifdef __S64_TYPEDEF
+typedef __S64_TYPEDEF __s64;
+#else
+#if (@SIZEOF_INT@ == 8)
+typedef int __s64;
+#else
+#if (@SIZEOF_LONG@ == 8)
+typedef long __s64;
+#else
+#if (@SIZEOF_LONG_LONG@ == 8)
+#if defined(__GNUC__)
+typedef __signed__ long long __s64;
+#else
+typedef signed long long __s64;
+#endif /* __GNUC__ */
+#endif /* SIZEOF_LONG_LONG == 8 */
+#endif /* SIZEOF_LONG == 8 */
+#endif /* SIZEOF_INT == 8 */
+#endif /* __S64_TYPEDEF */
+
+#undef __S8_TYPEDEF
+#undef __U8_TYPEDEF
+#undef __S16_TYPEDEF
+#undef __U16_TYPEDEF
+#undef __S32_TYPEDEF
+#undef __U32_TYPEDEF
+#undef __S64_TYPEDEF
+#undef __U64_TYPEDEF
+
+#endif /* _*_TYPES_H */
--- /dev/null
+/*
+ * cache.c - allocation/initialization/free routines for cache
+ *
+ * Copyright (C) 2001 Andreas Dilger
+ * Copyright (C) 2003 Theodore Ts'o
+ *
+ * %Begin-Header%
+ * This file may be redistributed under the terms of the
+ * GNU Lesser General Public License.
+ * %End-Header%
+ */
+
+#if HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+#ifdef HAVE_ERRNO_H
+#include <errno.h>
+#endif
+#include <stdlib.h>
+#include <string.h>
+#ifdef HAVE_SYS_PRCTL_H
+#include <sys/prctl.h>
+#else
+#define PR_GET_DUMPABLE 3
+#endif
+#if (!defined(HAVE_PRCTL) && defined(linux))
+#include <sys/syscall.h>
+#endif
+#ifdef HAVE_SYS_STAT_H
+#include <sys/stat.h>
+#endif
+#include "blkidP.h"
+
+int blkid_debug_mask = 0;
+
+
+static char *safe_getenv(const char *arg)
+{
+ if ((getuid() != geteuid()) || (getgid() != getegid()))
+ return NULL;
+#if HAVE_PRCTL
+ if (prctl(PR_GET_DUMPABLE, 0, 0, 0, 0) == 0)
+ return NULL;
+#else
+#if (defined(linux) && defined(SYS_prctl))
+ if (syscall(SYS_prctl, PR_GET_DUMPABLE, 0, 0, 0, 0) == 0)
+ return NULL;
+#endif
+#endif
+
+#ifdef HAVE___SECURE_GETENV
+ return __secure_getenv(arg);
+#else
+ return getenv(arg);
+#endif
+}
+
+#if 0 /* ifdef CONFIG_BLKID_DEBUG */
+static blkid_debug_dump_cache(int mask, blkid_cache cache)
+{
+ struct list_head *p;
+
+ if (!cache) {
+ printf("cache: NULL\n");
+ return;
+ }
+
+ printf("cache: time = %lu\n", cache->bic_time);
+ printf("cache: flags = 0x%08X\n", cache->bic_flags);
+
+ list_for_each(p, &cache->bic_devs) {
+ blkid_dev dev = list_entry(p, struct blkid_struct_dev, bid_devs);
+ blkid_debug_dump_dev(dev);
+ }
+}
+#endif
+
+int blkid_get_cache(blkid_cache *ret_cache, const char *filename)
+{
+ blkid_cache cache;
+
+#ifdef CONFIG_BLKID_DEBUG
+ if (!(blkid_debug_mask & DEBUG_INIT)) {
+ char *dstr = getenv("BLKID_DEBUG");
+
+ if (dstr)
+ blkid_debug_mask = strtoul(dstr, 0, 0);
+ blkid_debug_mask |= DEBUG_INIT;
+ }
+#endif
+
+ DBG(DEBUG_CACHE, printf("creating blkid cache (using %s)\n",
+ filename ? filename : "default cache"));
+
+ if (!(cache = (blkid_cache) calloc(1, sizeof(struct blkid_struct_cache))))
+ return -BLKID_ERR_MEM;
+
+ INIT_LIST_HEAD(&cache->bic_devs);
+ INIT_LIST_HEAD(&cache->bic_tags);
+
+ if (filename && !strlen(filename))
+ filename = 0;
+ if (!filename)
+ filename = safe_getenv("BLKID_FILE");
+ if (!filename)
+ filename = BLKID_CACHE_FILE;
+ cache->bic_filename = blkid_strdup(filename);
+
+ blkid_read_cache(cache);
+
+ *ret_cache = cache;
+ return 0;
+}
+
+void blkid_put_cache(blkid_cache cache)
+{
+ if (!cache)
+ return;
+
+ (void) blkid_flush_cache(cache);
+
+ DBG(DEBUG_CACHE, printf("freeing cache struct\n"));
+
+ /* DBG(DEBUG_CACHE, blkid_debug_dump_cache(cache)); */
+
+ while (!list_empty(&cache->bic_devs)) {
+ blkid_dev dev = list_entry(cache->bic_devs.next,
+ struct blkid_struct_dev,
+ bid_devs);
+ blkid_free_dev(dev);
+ }
+
+ while (!list_empty(&cache->bic_tags)) {
+ blkid_tag tag = list_entry(cache->bic_tags.next,
+ struct blkid_struct_tag,
+ bit_tags);
+
+ while (!list_empty(&tag->bit_names)) {
+ blkid_tag bad = list_entry(tag->bit_names.next,
+ struct blkid_struct_tag,
+ bit_names);
+
+ DBG(DEBUG_CACHE, printf("warning: unfreed tag %s=%s\n",
+ bad->bit_name, bad->bit_val));
+ blkid_free_tag(bad);
+ }
+ blkid_free_tag(tag);
+ }
+ if (cache->bic_filename)
+ free(cache->bic_filename);
+
+ free(cache);
+}
+
+void blkid_gc_cache(blkid_cache cache)
+{
+ struct list_head *p, *pnext;
+ struct stat st;
+
+ if (!cache)
+ return;
+
+ list_for_each_safe(p, pnext, &cache->bic_devs) {
+ blkid_dev dev = list_entry(p, struct blkid_struct_dev, bid_devs);
+ if (!p)
+ break;
+ if (stat(dev->bid_name, &st) < 0) {
+ DBG(DEBUG_CACHE,
+ printf("freeing %s\n", dev->bid_name));
+ blkid_free_dev(dev);
+ cache->bic_flags |= BLKID_BIC_FL_CHANGED;
+ } else {
+ DBG(DEBUG_CACHE,
+ printf("Device %s exists\n", dev->bid_name));
+ }
+ }
+}
+
+
+#ifdef TEST_PROGRAM
+int main(int argc, char** argv)
+{
+ blkid_cache cache = NULL;
+ int ret;
+
+ blkid_debug_mask = DEBUG_ALL;
+ if ((argc > 2)) {
+ fprintf(stderr, "Usage: %s [filename] \n", argv[0]);
+ exit(1);
+ }
+
+ if ((ret = blkid_get_cache(&cache, argv[1])) < 0) {
+ fprintf(stderr, "error %d parsing cache file %s\n", ret,
+ argv[1] ? argv[1] : BLKID_CACHE_FILE);
+ exit(1);
+ }
+ if ((ret = blkid_get_cache(&cache, "/dev/null")) != 0) {
+ fprintf(stderr, "%s: error creating cache (%d)\n",
+ argv[0], ret);
+ exit(1);
+ }
+ if ((ret = blkid_probe_all(cache) < 0))
+ fprintf(stderr, "error probing devices\n");
+
+ blkid_put_cache(cache);
+
+ return ret;
+}
+#endif
--- /dev/null
+/*
+ * dev.c - allocation/initialization/free routines for dev
+ *
+ * Copyright (C) 2001 Andreas Dilger
+ * Copyright (C) 2003 Theodore Ts'o
+ *
+ * %Begin-Header%
+ * This file may be redistributed under the terms of the
+ * GNU Lesser General Public License.
+ * %End-Header%
+ */
+
+#include <stdlib.h>
+#include <string.h>
+
+#include "blkidP.h"
+
+blkid_dev blkid_new_dev(void)
+{
+ blkid_dev dev;
+
+ if (!(dev = (blkid_dev) calloc(1, sizeof(struct blkid_struct_dev))))
+ return NULL;
+
+ INIT_LIST_HEAD(&dev->bid_devs);
+ INIT_LIST_HEAD(&dev->bid_tags);
+
+ return dev;
+}
+
+void blkid_free_dev(blkid_dev dev)
+{
+ if (!dev)
+ return;
+
+ DBG(DEBUG_DEV,
+ printf(" freeing dev %s (%s)\n", dev->bid_name, dev->bid_type ?
+ dev->bid_type : "(null)"));
+ DBG(DEBUG_DEV, blkid_debug_dump_dev(dev));
+
+ list_del(&dev->bid_devs);
+ while (!list_empty(&dev->bid_tags)) {
+ blkid_tag tag = list_entry(dev->bid_tags.next,
+ struct blkid_struct_tag,
+ bit_tags);
+ blkid_free_tag(tag);
+ }
+ if (dev->bid_name)
+ free(dev->bid_name);
+ free(dev);
+}
+
+/*
+ * Given a blkid device, return its name
+ */
+extern const char *blkid_dev_devname(blkid_dev dev)
+{
+ return dev->bid_name;
+}
+
+#ifdef CONFIG_BLKID_DEBUG
+void blkid_debug_dump_dev(blkid_dev dev)
+{
+ struct list_head *p;
+
+ if (!dev) {
+ printf(" dev: NULL\n");
+ return;
+ }
+
+ printf(" dev: name = %s\n", dev->bid_name);
+ printf(" dev: DEVNO=\"0x%0llx\"\n", (long long)dev->bid_devno);
+ printf(" dev: TIME=\"%ld\"\n", (long)dev->bid_time);
+ printf(" dev: PRI=\"%d\"\n", dev->bid_pri);
+ printf(" dev: flags = 0x%08X\n", dev->bid_flags);
+
+ list_for_each(p, &dev->bid_tags) {
+ blkid_tag tag = list_entry(p, struct blkid_struct_tag, bit_tags);
+ if (tag)
+ printf(" tag: %s=\"%s\"\n", tag->bit_name,
+ tag->bit_val);
+ else
+ printf(" tag: NULL\n");
+ }
+ printf("\n");
+}
+#endif
+
+/*
+ * dev iteration routines for the public libblkid interface.
+ *
+ * These routines do not expose the list.h implementation, which are a
+ * contamination of the namespace, and which force us to reveal far, far
+ * too much of our internal implemenation. I'm not convinced I want
+ * to keep list.h in the long term, anyway. It's fine for kernel
+ * programming, but performance is not the #1 priority for this
+ * library, and I really don't like the tradeoff of type-safety for
+ * performance for this application. [tytso:20030125.2007EST]
+ */
+
+/*
+ * This series of functions iterate over all devices in a blkid cache
+ */
+#define DEV_ITERATE_MAGIC 0x01a5284c
+
+struct blkid_struct_dev_iterate {
+ int magic;
+ blkid_cache cache;
+ char *search_type;
+ char *search_value;
+ struct list_head *p;
+};
+
+extern blkid_dev_iterate blkid_dev_iterate_begin(blkid_cache cache)
+{
+ blkid_dev_iterate iter;
+
+ iter = malloc(sizeof(struct blkid_struct_dev_iterate));
+ if (iter) {
+ iter->magic = DEV_ITERATE_MAGIC;
+ iter->cache = cache;
+ iter->p = cache->bic_devs.next;
+ iter->search_type = 0;
+ iter->search_value = 0;
+ }
+ return (iter);
+}
+
+extern int blkid_dev_set_search(blkid_dev_iterate iter,
+ char *search_type, char *search_value)
+{
+ char *new_type, *new_value;
+
+ if (!iter || iter->magic != DEV_ITERATE_MAGIC || !search_type ||
+ !search_value)
+ return -1;
+ new_type = malloc(strlen(search_type)+1);
+ new_value = malloc(strlen(search_value)+1);
+ if (!new_type || !new_value) {
+ if (new_type)
+ free(new_type);
+ if (new_value)
+ free(new_value);
+ return -1;
+ }
+ strcpy(new_type, search_type);
+ strcpy(new_value, search_value);
+ if (iter->search_type)
+ free(iter->search_type);
+ if (iter->search_value)
+ free(iter->search_value);
+ iter->search_type = new_type;
+ iter->search_value = new_value;
+ return 0;
+}
+
+/*
+ * Return 0 on success, -1 on error
+ */
+extern int blkid_dev_next(blkid_dev_iterate iter,
+ blkid_dev *ret_dev)
+{
+ blkid_dev dev;
+
+ *ret_dev = 0;
+ if (!iter || iter->magic != DEV_ITERATE_MAGIC)
+ return -1;
+ while (iter->p != &iter->cache->bic_devs) {
+ dev = list_entry(iter->p, struct blkid_struct_dev, bid_devs);
+ iter->p = iter->p->next;
+ if (iter->search_type &&
+ !blkid_dev_has_tag(dev, iter->search_type,
+ iter->search_value))
+ continue;
+ *ret_dev = dev;
+ return 0;
+ }
+ return -1;
+}
+
+extern void blkid_dev_iterate_end(blkid_dev_iterate iter)
+{
+ if (!iter || iter->magic != DEV_ITERATE_MAGIC)
+ return;
+ iter->magic = 0;
+ free(iter);
+}
+
+#ifdef TEST_PROGRAM
+#ifdef HAVE_GETOPT_H
+#include <getopt.h>
+#else
+extern char *optarg;
+extern int optind;
+#endif
+
+void usage(char *prog)
+{
+ fprintf(stderr, "Usage: %s [-f blkid_file] [-m debug_mask]\n", prog);
+ fprintf(stderr, "\tList all devices and exit\n");
+ exit(1);
+}
+
+int main(int argc, char **argv)
+{
+ blkid_dev_iterate iter;
+ blkid_cache cache = NULL;
+ blkid_dev dev;
+ int c, ret;
+ char *tmp;
+ char *file = NULL;
+ char *search_type = NULL;
+ char *search_value = NULL;
+
+ while ((c = getopt (argc, argv, "m:f:")) != EOF)
+ switch (c) {
+ case 'f':
+ file = optarg;
+ break;
+ case 'm':
+ blkid_debug_mask = strtoul (optarg, &tmp, 0);
+ if (*tmp) {
+ fprintf(stderr, "Invalid debug mask: %s\n",
+ optarg);
+ exit(1);
+ }
+ break;
+ case '?':
+ usage(argv[0]);
+ }
+ if (argc >= optind+2) {
+ search_type = argv[optind];
+ search_value = argv[optind+1];
+ optind += 2;
+ }
+ if (argc != optind)
+ usage(argv[0]);
+
+ if ((ret = blkid_get_cache(&cache, file)) != 0) {
+ fprintf(stderr, "%s: error creating cache (%d)\n",
+ argv[0], ret);
+ exit(1);
+ }
+
+ iter = blkid_dev_iterate_begin(cache);
+ if (search_type)
+ blkid_dev_set_search(iter, search_type, search_value);
+ while (blkid_dev_next(iter, &dev) == 0) {
+ printf("Device: %s\n", blkid_dev_devname(dev));
+ }
+ blkid_dev_iterate_end(iter);
+
+
+ blkid_put_cache(cache);
+ return (0);
+}
+#endif
--- /dev/null
+/*
+ * devname.c - get a dev by its device inode name
+ *
+ * Copyright (C) Andries Brouwer
+ * Copyright (C) 1999, 2000, 2001, 2002, 2003 Theodore Ts'o
+ * Copyright (C) 2001 Andreas Dilger
+ *
+ * %Begin-Header%
+ * This file may be redistributed under the terms of the
+ * GNU Lesser General Public License.
+ * %End-Header%
+ */
+
+#define _GNU_SOURCE 1
+
+#include <stdio.h>
+#include <string.h>
+#include <limits.h>
+#if HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
+#if HAVE_SYS_TYPES_H
+#include <sys/types.h>
+#endif
+#if HAVE_SYS_STAT_H
+#include <sys/stat.h>
+#endif
+#if HAVE_ERRNO_H
+#include <errno.h>
+#endif
+#if HAVE_SYS_MKDEV_H
+#include <sys/mkdev.h>
+#endif
+#include <time.h>
+
+#include "blkidP.h"
+
+#ifdef HAVE_DEVMAPPER
+#include <libdevmapper.h>
+#endif
+
+/*
+ * Find a dev struct in the cache by device name, if available.
+ *
+ * If there is no entry with the specified device name, and the create
+ * flag is set, then create an empty device entry.
+ */
+blkid_dev blkid_get_dev(blkid_cache cache, const char *devname, int flags)
+{
+ blkid_dev dev = NULL, tmp;
+ struct list_head *p, *pnext;
+
+ if (!cache || !devname)
+ return NULL;
+
+ list_for_each(p, &cache->bic_devs) {
+ tmp = list_entry(p, struct blkid_struct_dev, bid_devs);
+ if (strcmp(tmp->bid_name, devname))
+ continue;
+
+ DBG(DEBUG_DEVNAME,
+ printf("found devname %s in cache\n", tmp->bid_name));
+ dev = tmp;
+ break;
+ }
+
+ if (!dev && (flags & BLKID_DEV_CREATE)) {
+ dev = blkid_new_dev();
+ if (!dev)
+ return NULL;
+ dev->bid_time = INT_MIN;
+ dev->bid_name = blkid_strdup(devname);
+ dev->bid_cache = cache;
+ list_add_tail(&dev->bid_devs, &cache->bic_devs);
+ cache->bic_flags |= BLKID_BIC_FL_CHANGED;
+ }
+
+ if (flags & BLKID_DEV_VERIFY) {
+ dev = blkid_verify(cache, dev);
+ if (!dev || !(dev->bid_flags & BLKID_BID_FL_VERIFIED))
+ return dev;
+ /*
+ * If the device is verified, then search the blkid
+ * cache for any entries that match on the type, uuid,
+ * and label, and verify them; if a cache entry can
+ * not be verified, then it's stale and so we remove
+ * it.
+ */
+ list_for_each_safe(p, pnext, &cache->bic_devs) {
+ blkid_dev dev2;
+ if (!p)
+ break;
+ dev2 = list_entry(p, struct blkid_struct_dev, bid_devs);
+ if (dev2->bid_flags & BLKID_BID_FL_VERIFIED)
+ continue;
+ if (!dev->bid_type || !dev2->bid_type ||
+ strcmp(dev->bid_type, dev2->bid_type))
+ continue;
+ if (dev->bid_label && dev2->bid_label &&
+ strcmp(dev->bid_label, dev2->bid_label))
+ continue;
+ if (dev->bid_uuid && dev2->bid_uuid &&
+ strcmp(dev->bid_uuid, dev2->bid_uuid))
+ continue;
+ if ((dev->bid_label && !dev2->bid_label) ||
+ (!dev->bid_label && dev2->bid_label) ||
+ (dev->bid_uuid && !dev2->bid_uuid) ||
+ (!dev->bid_uuid && dev2->bid_uuid))
+ continue;
+ dev2 = blkid_verify(cache, dev2);
+ if (dev2 && !(dev2->bid_flags & BLKID_BID_FL_VERIFIED))
+ blkid_free_dev(dev2);
+ }
+ }
+ return dev;
+}
+
+#ifdef HAVE_DEVMAPPER
+static int dm_device_is_leaf(const dev_t dev);
+#endif
+
+/*
+ * Probe a single block device to add to the device cache.
+ */
+static void probe_one(blkid_cache cache, const char *ptname,
+ dev_t devno, int pri, int only_if_new)
+{
+ blkid_dev dev = NULL;
+ struct list_head *p, *pnext;
+ const char **dir;
+ char *devname = NULL;
+
+ /* See if we already have this device number in the cache. */
+ list_for_each_safe(p, pnext, &cache->bic_devs) {
+ blkid_dev tmp = list_entry(p, struct blkid_struct_dev,
+ bid_devs);
+#ifdef HAVE_DEVMAPPER
+ if (!dm_device_is_leaf(devno))
+ continue;
+#endif
+ if (tmp->bid_devno == devno) {
+ if (only_if_new && !access(tmp->bid_name, F_OK))
+ return;
+ dev = blkid_verify(cache, tmp);
+ if (dev && (dev->bid_flags & BLKID_BID_FL_VERIFIED))
+ break;
+ dev = 0;
+ }
+ }
+ if (dev && dev->bid_devno == devno)
+ goto set_pri;
+
+ /*
+ * Take a quick look at /dev/ptname for the device number. We check
+ * all of the likely device directories. If we don't find it, or if
+ * the stat information doesn't check out, use blkid_devno_to_devname()
+ * to find it via an exhaustive search for the device major/minor.
+ */
+ for (dir = blkid_devdirs; *dir; dir++) {
+ struct stat st;
+ char device[256];
+
+ sprintf(device, "%s/%s", *dir, ptname);
+ if ((dev = blkid_get_dev(cache, device, BLKID_DEV_FIND)) &&
+ dev->bid_devno == devno)
+ goto set_pri;
+
+ if (stat(device, &st) == 0 && S_ISBLK(st.st_mode) &&
+ st.st_rdev == devno) {
+ devname = blkid_strdup(device);
+ break;
+ }
+ }
+ if (!devname) {
+ devname = blkid_devno_to_devname(devno);
+ if (!devname)
+ return;
+ }
+ dev = blkid_get_dev(cache, devname, BLKID_DEV_NORMAL);
+ free(devname);
+
+set_pri:
+ if (!pri && !strncmp(ptname, "md", 2))
+ pri = BLKID_PRI_MD;
+ if (dev)
+ dev->bid_pri = pri;
+ return;
+}
+
+#ifdef HAVE_DEVMAPPER
+static void dm_quiet_log(int level __BLKID_ATTR((unused)),
+ const char *file __BLKID_ATTR((unused)),
+ int line __BLKID_ATTR((unused)),
+ const char *f __BLKID_ATTR((unused)), ...)
+{
+ return;
+}
+
+/*
+ * device-mapper support
+ */
+static int dm_device_has_dep(const dev_t dev, const char *name)
+{
+ struct dm_task *task;
+ struct dm_deps *deps;
+ struct dm_info info;
+ unsigned int i;
+ int ret = 0;
+
+ task = dm_task_create(DM_DEVICE_DEPS);
+ if (!task)
+ goto out;
+
+ if (!dm_task_set_name(task, name))
+ goto out;
+
+ if (!dm_task_run(task))
+ goto out;
+
+ if (!dm_task_get_info(task, &info))
+ goto out;
+
+ if (!info.exists)
+ goto out;
+
+ deps = dm_task_get_deps(task);
+ if (!deps || deps->count == 0)
+ goto out;
+
+ for (i = 0; i < deps->count; i++) {
+ dev_t dep_dev = deps->device[i];
+
+ if (dev == dep_dev) {
+ ret = 1;
+ goto out;
+ }
+ }
+
+out:
+ if (task)
+ dm_task_destroy(task);
+
+ return ret;
+}
+
+static int dm_device_is_leaf(const dev_t dev)
+{
+ struct dm_task *task;
+ struct dm_names *names;
+ unsigned int next = 0;
+ int n, ret = 1;
+
+ dm_log_init(dm_quiet_log);
+ task = dm_task_create(DM_DEVICE_LIST);
+ if (!task)
+ goto out;
+
+ dm_log_init(0);
+
+ if (!dm_task_run(task))
+ goto out;
+
+ names = dm_task_get_names(task);
+ if (!names || !names->dev)
+ goto out;
+
+ n = 0;
+ do {
+ names = (struct dm_names *) ((char *)names + next);
+
+ if (dm_device_has_dep(dev, names->name))
+ ret = 0;
+
+ next = names->next;
+ } while (next);
+
+out:
+ if (task)
+ dm_task_destroy(task);
+
+ return ret;
+}
+
+static dev_t dm_get_devno(const char *name)
+{
+ struct dm_task *task;
+ struct dm_info info;
+ dev_t ret = 0;
+
+ task = dm_task_create(DM_DEVICE_INFO);
+ if (!task)
+ goto out;
+
+ if (!dm_task_set_name(task, name))
+ goto out;
+
+ if (!dm_task_run(task))
+ goto out;
+
+ if (!dm_task_get_info(task, &info))
+ goto out;
+
+ if (!info.exists)
+ goto out;
+
+ ret = makedev(info.major, info.minor);
+
+out:
+ if (task)
+ dm_task_destroy(task);
+
+ return ret;
+}
+
+static void dm_probe_all(blkid_cache cache, int only_if_new)
+{
+ struct dm_task *task;
+ struct dm_names *names;
+ unsigned int next = 0;
+ int n;
+
+ dm_log_init(dm_quiet_log);
+ task = dm_task_create(DM_DEVICE_LIST);
+ if (!task)
+ goto out;
+ dm_log_init(0);
+
+ if (!dm_task_run(task))
+ goto out;
+
+ names = dm_task_get_names(task);
+ if (!names || !names->dev)
+ goto out;
+
+ n = 0;
+ do {
+ int rc;
+ char *device = NULL;
+ dev_t dev = 0;
+
+ names = (struct dm_names *) ((char *)names + next);
+
+ rc = asprintf(&device, "mapper/%s", names->name);
+ if (rc < 0)
+ goto try_next;
+
+ dev = dm_get_devno(names->name);
+ if (dev == 0)
+ goto try_next;
+
+ if (!dm_device_is_leaf(dev))
+ goto try_next;
+
+ probe_one(cache, device, dev, BLKID_PRI_DM, only_if_new);
+
+try_next:
+ free(device);
+ next = names->next;
+ } while (next);
+
+out:
+ if (task)
+ dm_task_destroy(task);
+}
+#endif /* HAVE_DEVMAPPER */
+
+#define PROC_PARTITIONS "/proc/partitions"
+#define VG_DIR "/proc/lvm/VGs"
+
+/*
+ * This function initializes the UUID cache with devices from the LVM
+ * proc hierarchy. We currently depend on the names of the LVM
+ * hierarchy giving us the device structure in /dev. (XXX is this a
+ * safe thing to do?)
+ */
+#ifdef VG_DIR
+#include <dirent.h>
+static dev_t lvm_get_devno(const char *lvm_device)
+{
+ FILE *lvf;
+ char buf[1024];
+ int ma, mi;
+ dev_t ret = 0;
+
+ DBG(DEBUG_DEVNAME, printf("opening %s\n", lvm_device));
+ if ((lvf = fopen(lvm_device, "r")) == NULL) {
+ DBG(DEBUG_DEVNAME, printf("%s: (%d) %s\n", lvm_device, errno,
+ strerror(errno)));
+ return 0;
+ }
+
+ while (fgets(buf, sizeof(buf), lvf)) {
+ if (sscanf(buf, "device: %d:%d", &ma, &mi) == 2) {
+ ret = makedev(ma, mi);
+ break;
+ }
+ }
+ fclose(lvf);
+
+ return ret;
+}
+
+static void lvm_probe_all(blkid_cache cache, int only_if_new)
+{
+ DIR *vg_list;
+ struct dirent *vg_iter;
+ int vg_len = strlen(VG_DIR);
+ dev_t dev;
+
+ if ((vg_list = opendir(VG_DIR)) == NULL)
+ return;
+
+ DBG(DEBUG_DEVNAME, printf("probing LVM devices under %s\n", VG_DIR));
+
+ while ((vg_iter = readdir(vg_list)) != NULL) {
+ DIR *lv_list;
+ char *vdirname;
+ char *vg_name;
+ struct dirent *lv_iter;
+
+ vg_name = vg_iter->d_name;
+ if (!strcmp(vg_name, ".") || !strcmp(vg_name, ".."))
+ continue;
+ vdirname = malloc(vg_len + strlen(vg_name) + 8);
+ if (!vdirname)
+ goto exit;
+ sprintf(vdirname, "%s/%s/LVs", VG_DIR, vg_name);
+
+ lv_list = opendir(vdirname);
+ free(vdirname);
+ if (lv_list == NULL)
+ continue;
+
+ while ((lv_iter = readdir(lv_list)) != NULL) {
+ char *lv_name, *lvm_device;
+
+ lv_name = lv_iter->d_name;
+ if (!strcmp(lv_name, ".") || !strcmp(lv_name, ".."))
+ continue;
+
+ lvm_device = malloc(vg_len + strlen(vg_name) +
+ strlen(lv_name) + 8);
+ if (!lvm_device) {
+ closedir(lv_list);
+ goto exit;
+ }
+ sprintf(lvm_device, "%s/%s/LVs/%s", VG_DIR, vg_name,
+ lv_name);
+ dev = lvm_get_devno(lvm_device);
+ sprintf(lvm_device, "%s/%s", vg_name, lv_name);
+ DBG(DEBUG_DEVNAME, printf("LVM dev %s: devno 0x%04X\n",
+ lvm_device,
+ (unsigned int) dev));
+ probe_one(cache, lvm_device, dev, BLKID_PRI_LVM,
+ only_if_new);
+ free(lvm_device);
+ }
+ closedir(lv_list);
+ }
+exit:
+ closedir(vg_list);
+}
+#endif
+
+#define PROC_EVMS_VOLUMES "/proc/evms/volumes"
+
+static int
+evms_probe_all(blkid_cache cache, int only_if_new)
+{
+ char line[100];
+ int ma, mi, sz, num = 0;
+ FILE *procpt;
+ char device[110];
+
+ procpt = fopen(PROC_EVMS_VOLUMES, "r");
+ if (!procpt)
+ return 0;
+ while (fgets(line, sizeof(line), procpt)) {
+ if (sscanf (line, " %d %d %d %*s %*s %[^\n ]",
+ &ma, &mi, &sz, device) != 4)
+ continue;
+
+ DBG(DEBUG_DEVNAME, printf("Checking partition %s (%d, %d)\n",
+ device, ma, mi));
+
+ probe_one(cache, device, makedev(ma, mi), BLKID_PRI_EVMS,
+ only_if_new);
+ num++;
+ }
+ fclose(procpt);
+ return num;
+}
+
+/*
+ * Read the device data for all available block devices in the system.
+ */
+static int probe_all(blkid_cache cache, int only_if_new)
+{
+ FILE *proc;
+ char line[1024];
+ char ptname0[128], ptname1[128], *ptname = 0;
+ char *ptnames[2];
+ dev_t devs[2];
+ int ma, mi;
+ unsigned long long sz;
+ int lens[2] = { 0, 0 };
+ int which = 0, last = 0;
+
+ ptnames[0] = ptname0;
+ ptnames[1] = ptname1;
+
+ if (!cache)
+ return -BLKID_ERR_PARAM;
+
+ if (cache->bic_flags & BLKID_BIC_FL_PROBED &&
+ time(0) - cache->bic_time < BLKID_PROBE_INTERVAL)
+ return 0;
+
+ blkid_read_cache(cache);
+#ifdef HAVE_DEVMAPPER
+ dm_probe_all(cache, only_if_new);
+#endif
+ evms_probe_all(cache, only_if_new);
+#ifdef VG_DIR
+ lvm_probe_all(cache, only_if_new);
+#endif
+
+ proc = fopen(PROC_PARTITIONS, "r");
+ if (!proc)
+ return -BLKID_ERR_PROC;
+
+ while (fgets(line, sizeof(line), proc)) {
+ last = which;
+ which ^= 1;
+ ptname = ptnames[which];
+
+ if (sscanf(line, " %d %d %llu %128[^\n ]",
+ &ma, &mi, &sz, ptname) != 4)
+ continue;
+ devs[which] = makedev(ma, mi);
+
+ DBG(DEBUG_DEVNAME, printf("read partition name %s\n", ptname));
+
+ /* Skip whole disk devs unless they have no partitions.
+ * If base name of device has changed, also
+ * check previous dev to see if it didn't have a partn.
+ * heuristic: partition name ends in a digit, & partition
+ * names contain whole device name as substring.
+ *
+ * Skip extended partitions.
+ * heuristic: size is 1
+ *
+ * FIXME: skip /dev/{ida,cciss,rd} whole-disk devs
+ */
+
+ lens[which] = strlen(ptname);
+
+ /* ends in a digit, clearly a partition, so check */
+ if (isdigit(ptname[lens[which] - 1])) {
+ DBG(DEBUG_DEVNAME,
+ printf("partition dev %s, devno 0x%04X\n",
+ ptname, (unsigned int) devs[which]));
+
+ if (sz > 1)
+ probe_one(cache, ptname, devs[which], 0,
+ only_if_new);
+ lens[which] = 0; /* mark as checked */
+ }
+
+ /*
+ * If last was not checked because it looked like a whole-disk
+ * dev, and the device's base name has changed,
+ * check last as well.
+ */
+ if (lens[last] && strncmp(ptnames[last], ptname, lens[last])) {
+ DBG(DEBUG_DEVNAME,
+ printf("whole dev %s, devno 0x%04X\n",
+ ptnames[last], (unsigned int) devs[last]));
+ probe_one(cache, ptnames[last], devs[last], 0,
+ only_if_new);
+ lens[last] = 0;
+ }
+ }
+
+ /* Handle the last device if it wasn't partitioned */
+ if (lens[which])
+ probe_one(cache, ptname, devs[which], 0, only_if_new);
+
+ fclose(proc);
+ blkid_flush_cache(cache);
+ return 0;
+}
+
+int blkid_probe_all(blkid_cache cache)
+{
+ int ret;
+
+ DBG(DEBUG_PROBE, printf("Begin blkid_probe_all()\n"));
+ ret = probe_all(cache, 0);
+ cache->bic_time = time(0);
+ cache->bic_flags |= BLKID_BIC_FL_PROBED;
+ DBG(DEBUG_PROBE, printf("End blkid_probe_all()\n"));
+ return ret;
+}
+
+int blkid_probe_all_new(blkid_cache cache)
+{
+ int ret;
+
+ DBG(DEBUG_PROBE, printf("Begin blkid_probe_all_new()\n"));
+ ret = probe_all(cache, 1);
+ DBG(DEBUG_PROBE, printf("End blkid_probe_all_new()\n"));
+ return ret;
+}
+
+
+#ifdef TEST_PROGRAM
+int main(int argc, char **argv)
+{
+ blkid_cache cache = NULL;
+ int ret;
+
+ blkid_debug_mask = DEBUG_ALL;
+ if (argc != 1) {
+ fprintf(stderr, "Usage: %s\n"
+ "Probe all devices and exit\n", argv[0]);
+ exit(1);
+ }
+ if ((ret = blkid_get_cache(&cache, "/dev/null")) != 0) {
+ fprintf(stderr, "%s: error creating cache (%d)\n",
+ argv[0], ret);
+ exit(1);
+ }
+ if (blkid_probe_all(cache) < 0)
+ printf("%s: error probing devices\n", argv[0]);
+
+ blkid_put_cache(cache);
+ return (0);
+}
+#endif
--- /dev/null
+/*
+ * devno.c - find a particular device by its device number (major/minor)
+ *
+ * Copyright (C) 2000, 2001, 2003 Theodore Ts'o
+ * Copyright (C) 2001 Andreas Dilger
+ *
+ * %Begin-Header%
+ * This file may be redistributed under the terms of the
+ * GNU Lesser General Public License.
+ * %End-Header%
+ */
+
+#include <stdio.h>
+#include <string.h>
+#if HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+#include <stdlib.h>
+#include <string.h>
+#if HAVE_SYS_TYPES_H
+#include <sys/types.h>
+#endif
+#if HAVE_SYS_STAT_H
+#include <sys/stat.h>
+#endif
+#include <dirent.h>
+#if HAVE_ERRNO_H
+#include <errno.h>
+#endif
+#if HAVE_SYS_MKDEV_H
+#include <sys/mkdev.h>
+#endif
+
+#include "blkidP.h"
+
+struct dir_list {
+ char *name;
+ struct dir_list *next;
+};
+
+char *blkid_strndup(const char *s, int length)
+{
+ char *ret;
+
+ if (!s)
+ return NULL;
+
+ if (!length)
+ length = strlen(s);
+
+ ret = malloc(length + 1);
+ if (ret) {
+ strncpy(ret, s, length);
+ ret[length] = '\0';
+ }
+ return ret;
+}
+
+char *blkid_strdup(const char *s)
+{
+ return blkid_strndup(s, 0);
+}
+
+/*
+ * This function adds an entry to the directory list
+ */
+static void add_to_dirlist(const char *name, struct dir_list **list)
+{
+ struct dir_list *dp;
+
+ dp = malloc(sizeof(struct dir_list));
+ if (!dp)
+ return;
+ dp->name = blkid_strdup(name);
+ if (!dp->name) {
+ free(dp);
+ return;
+ }
+ dp->next = *list;
+ *list = dp;
+}
+
+/*
+ * This function frees a directory list
+ */
+static void free_dirlist(struct dir_list **list)
+{
+ struct dir_list *dp, *next;
+
+ for (dp = *list; dp; dp = next) {
+ next = dp->next;
+ free(dp->name);
+ free(dp);
+ }
+ *list = NULL;
+}
+
+static void scan_dir(char *dirname, dev_t devno, struct dir_list **list,
+ char **devname)
+{
+ DIR *dir;
+ struct dirent *dp;
+ char path[1024];
+ int dirlen;
+ struct stat st;
+
+ if ((dir = opendir(dirname)) == NULL)
+ return;
+ dirlen = strlen(dirname) + 2;
+ while ((dp = readdir(dir)) != 0) {
+ if (dirlen + strlen(dp->d_name) >= sizeof(path))
+ continue;
+
+ if (dp->d_name[0] == '.' &&
+ ((dp->d_name[1] == 0) ||
+ ((dp->d_name[1] == '.') && (dp->d_name[2] == 0))))
+ continue;
+
+ sprintf(path, "%s/%s", dirname, dp->d_name);
+ if (stat(path, &st) < 0)
+ continue;
+
+ if (S_ISBLK(st.st_mode) && st.st_rdev == devno) {
+ *devname = blkid_strdup(path);
+ DBG(DEBUG_DEVNO,
+ printf("found 0x%llx at %s (%p)\n", (long long)devno,
+ path, *devname));
+ break;
+ }
+ if (S_ISDIR(st.st_mode) && !lstat(path, &st) &&
+ S_ISDIR(st.st_mode))
+ add_to_dirlist(path, list);
+ }
+ closedir(dir);
+ return;
+}
+
+/* Directories where we will try to search for device numbers */
+const char *blkid_devdirs[] = { "/devices", "/devfs", "/dev", NULL };
+
+/*
+ * This function finds the pathname to a block device with a given
+ * device number. It returns a pointer to allocated memory to the
+ * pathname on success, and NULL on failure.
+ */
+char *blkid_devno_to_devname(dev_t devno)
+{
+ struct dir_list *list = NULL, *new_list = NULL;
+ char *devname = NULL;
+ const char **dir;
+
+ /*
+ * Add the starting directories to search in reverse order of
+ * importance, since we are using a stack...
+ */
+ for (dir = blkid_devdirs; *dir; dir++)
+ add_to_dirlist(*dir, &list);
+
+ while (list) {
+ struct dir_list *current = list;
+
+ list = list->next;
+ DBG(DEBUG_DEVNO, printf("directory %s\n", current->name));
+ scan_dir(current->name, devno, &new_list, &devname);
+ free(current->name);
+ free(current);
+ if (devname)
+ break;
+ /*
+ * If we're done checking at this level, descend to
+ * the next level of subdirectories. (breadth-first)
+ */
+ if (list == NULL) {
+ list = new_list;
+ new_list = NULL;
+ }
+ }
+ free_dirlist(&list);
+ free_dirlist(&new_list);
+
+ if (!devname) {
+ DBG(DEBUG_DEVNO,
+ printf("blkid: couldn't find devno 0x%04lx\n",
+ (unsigned long) devno));
+ } else {
+ DBG(DEBUG_DEVNO,
+ printf("found devno 0x%04llx as %s\n", (long long)devno, devname));
+ }
+
+
+ return devname;
+}
+
+#ifdef TEST_PROGRAM
+int main(int argc, char** argv)
+{
+ char *devname, *tmp;
+ int major, minor;
+ dev_t devno;
+ const char *errmsg = "Couldn't parse %s: %s\n";
+
+ blkid_debug_mask = DEBUG_ALL;
+ if ((argc != 2) && (argc != 3)) {
+ fprintf(stderr, "Usage:\t%s device_number\n\t%s major minor\n"
+ "Resolve a device number to a device name\n",
+ argv[0], argv[0]);
+ exit(1);
+ }
+ if (argc == 2) {
+ devno = strtoul(argv[1], &tmp, 0);
+ if (*tmp) {
+ fprintf(stderr, errmsg, "device number", argv[1]);
+ exit(1);
+ }
+ } else {
+ major = strtoul(argv[1], &tmp, 0);
+ if (*tmp) {
+ fprintf(stderr, errmsg, "major number", argv[1]);
+ exit(1);
+ }
+ minor = strtoul(argv[2], &tmp, 0);
+ if (*tmp) {
+ fprintf(stderr, errmsg, "minor number", argv[2]);
+ exit(1);
+ }
+ devno = makedev(major, minor);
+ }
+ printf("Looking for device 0x%04llx\n", (long long)devno);
+ devname = blkid_devno_to_devname(devno);
+ if (devname)
+ free(devname);
+ return 0;
+}
+#endif
--- /dev/null
+/*
+ * getsize.c --- get the size of a partition.
+ *
+ * Copyright (C) 1995, 1995 Theodore Ts'o.
+ *
+ * %Begin-Header%
+ * This file may be redistributed under the terms of the
+ * GNU Lesser General Public License.
+ * %End-Header%
+ */
+
+#define _LARGEFILE_SOURCE
+#define _LARGEFILE64_SOURCE
+
+/* include this before sys/queues.h! */
+#include "blkidP.h"
+
+#include <stdio.h>
+#if HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+#if HAVE_ERRNO_H
+#include <errno.h>
+#endif
+#include <fcntl.h>
+#ifdef HAVE_SYS_IOCTL_H
+#include <sys/ioctl.h>
+#endif
+#ifdef HAVE_LINUX_FD_H
+#include <linux/fd.h>
+#endif
+#ifdef HAVE_SYS_DISKLABEL_H
+#include <sys/disklabel.h>
+#endif
+#ifdef HAVE_SYS_DISK_H
+#ifdef HAVE_SYS_QUEUE_H
+#include <sys/queue.h> /* for LIST_HEAD */
+#endif
+#include <sys/disk.h>
+#endif
+#ifdef __linux__
+#include <sys/utsname.h>
+#endif
+#if HAVE_SYS_STAT_H
+#include <sys/stat.h>
+#endif
+
+
+#if defined(__linux__) && defined(_IO) && !defined(BLKGETSIZE)
+#define BLKGETSIZE _IO(0x12,96) /* return device size */
+#endif
+
+#if defined(__linux__) && defined(_IOR) && !defined(BLKGETSIZE64)
+#define BLKGETSIZE64 _IOR(0x12,114,size_t) /* return device size in bytes (u64 *arg) */
+#endif
+
+#ifdef APPLE_DARWIN
+#define BLKGETSIZE DKIOCGETBLOCKCOUNT32
+#endif /* APPLE_DARWIN */
+
+static int valid_offset(int fd, blkid_loff_t offset)
+{
+ char ch;
+
+ if (blkid_llseek(fd, offset, 0) < 0)
+ return 0;
+ if (read(fd, &ch, 1) < 1)
+ return 0;
+ return 1;
+}
+
+/*
+ * Returns the number of bytes in a partition
+ */
+blkid_loff_t blkid_get_dev_size(int fd)
+{
+ int valid_blkgetsize64 = 1;
+#ifdef __linux__
+ struct utsname ut;
+#endif
+ unsigned long long size64;
+ unsigned long size;
+ blkid_loff_t high, low;
+#ifdef FDGETPRM
+ struct floppy_struct this_floppy;
+#endif
+#ifdef HAVE_SYS_DISKLABEL_H
+ int part = -1;
+ struct disklabel lab;
+ struct partition *pp;
+ char ch;
+ struct stat st;
+#endif /* HAVE_SYS_DISKLABEL_H */
+
+#ifdef DKIOCGETBLOCKCOUNT /* For Apple Darwin */
+ if (ioctl(fd, DKIOCGETBLOCKCOUNT, &size64) >= 0) {
+ if ((sizeof(blkid_loff_t) < sizeof(unsigned long long))
+ && (size64 << 9 > 0xFFFFFFFF))
+ return 0; /* EFBIG */
+ return (blkid_loff_t) size64 << 9;
+ }
+#endif
+
+#ifdef BLKGETSIZE64
+#ifdef __linux__
+ if ((uname(&ut) == 0) &&
+ ((ut.release[0] == '2') && (ut.release[1] == '.') &&
+ (ut.release[2] < '6') && (ut.release[3] == '.')))
+ valid_blkgetsize64 = 0;
+#endif
+ if (valid_blkgetsize64 &&
+ ioctl(fd, BLKGETSIZE64, &size64) >= 0) {
+ if ((sizeof(blkid_loff_t) < sizeof(unsigned long long))
+ && ((size64) > 0xFFFFFFFF))
+ return 0; /* EFBIG */
+ return size64;
+ }
+#endif
+
+#ifdef BLKGETSIZE
+ if (ioctl(fd, BLKGETSIZE, &size) >= 0)
+ return (blkid_loff_t)size << 9;
+#endif
+
+/* tested on FreeBSD 6.1-RELEASE i386 */
+#ifdef DIOCGMEDIASIZE
+ if (ioctl(fd, DIOCGMEDIASIZE, &size64) >= 0)
+ return (off_t)size64;
+#endif /* DIOCGMEDIASIZE */
+
+#ifdef FDGETPRM
+ if (ioctl(fd, FDGETPRM, &this_floppy) >= 0)
+ return (blkid_loff_t)this_floppy.size << 9;
+#endif
+#ifdef HAVE_SYS_DISKLABEL_H
+ /*
+ * This code works for FreeBSD 4.11 i386, except for the full device
+ * (such as /dev/ad0). It doesn't work properly for newer FreeBSD
+ * though. FreeBSD >= 5.0 should be covered by the DIOCGMEDIASIZE
+ * above however.
+ *
+ * Note that FreeBSD >= 4.0 has disk devices as unbuffered (raw,
+ * character) devices, so we need to check for S_ISCHR, too.
+ */
+ if ((fstat(fd, &st) >= 0) && (S_ISBLK(st.st_mode) || S_ISCHR(st.st_mode)))
+ part = st.st_rdev & 7;
+ if (part >= 0 && (ioctl(fd, DIOCGDINFO, (char *)&lab) >= 0)) {
+ pp = &lab.d_partitions[part];
+ if (pp->p_size)
+ return pp->p_size << 9;
+ }
+#endif /* HAVE_SYS_DISKLABEL_H */
+ {
+#ifdef HAVE_FSTAT64
+ struct stat64 st;
+ if (fstat64(fd, &st) == 0)
+#else
+ struct stat st;
+ if (fstat(fd, &st) == 0)
+#endif
+ if (S_ISREG(st.st_mode))
+ return st.st_size;
+ }
+
+
+ /*
+ * OK, we couldn't figure it out by using a specialized ioctl,
+ * which is generally the best way. So do binary search to
+ * find the size of the partition.
+ */
+ low = 0;
+ for (high = 1024; valid_offset(fd, high); high *= 2)
+ low = high;
+ while (low < high - 1)
+ {
+ const blkid_loff_t mid = (low + high) / 2;
+
+ if (valid_offset(fd, mid))
+ low = mid;
+ else
+ high = mid;
+ }
+ return low + 1;
+}
+
+#ifdef TEST_PROGRAM
+int main(int argc, char **argv)
+{
+ long long bytes;
+ int fd;
+
+ if (argc < 2) {
+ fprintf(stderr, "Usage: %s device\n"
+ "Determine the size of a device\n", argv[0]);
+ return 1;
+ }
+
+ if ((fd = open(argv[1], O_RDONLY)) < 0)
+ perror(argv[0]);
+
+ bytes = blkid_get_dev_size(fd);
+ printf("Device %s has %Ld 1k blocks.\n", argv[1],
+ (unsigned long long) bytes >> 10);
+
+ return 0;
+}
+#endif
--- /dev/null
+#if !defined(_BLKID_LIST_H) && !defined(LIST_HEAD)
+#define _BLKID_LIST_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifdef __GNUC__
+#define _INLINE_ static __inline__
+#else /* For Watcom C */
+#define _INLINE_ static inline
+#endif
+
+/*
+ * Simple doubly linked list implementation.
+ *
+ * Some of the internal functions ("__xxx") are useful when
+ * manipulating whole lists rather than single entries, as
+ * sometimes we already know the next/prev entries and we can
+ * generate better code by using them directly rather than
+ * using the generic single-entry routines.
+ */
+
+struct list_head {
+ struct list_head *next, *prev;
+};
+
+#define LIST_HEAD_INIT(name) { &(name), &(name) }
+
+#define LIST_HEAD(name) \
+ struct list_head name = LIST_HEAD_INIT(name)
+
+#define INIT_LIST_HEAD(ptr) do { \
+ (ptr)->next = (ptr); (ptr)->prev = (ptr); \
+} while (0)
+
+/*
+ * Insert a new entry between two known consecutive entries.
+ *
+ * This is only for internal list manipulation where we know
+ * the prev/next entries already!
+ */
+_INLINE_ void __list_add(struct list_head * add,
+ struct list_head * prev,
+ struct list_head * next)
+{
+ next->prev = add;
+ add->next = next;
+ add->prev = prev;
+ prev->next = add;
+}
+
+/**
+ * list_add - add a new entry
+ * @add: new entry to be added
+ * @head: list head to add it after
+ *
+ * Insert a new entry after the specified head.
+ * This is good for implementing stacks.
+ */
+_INLINE_ void list_add(struct list_head *add, struct list_head *head)
+{
+ __list_add(add, head, head->next);
+}
+
+/**
+ * list_add_tail - add a new entry
+ * @add: new entry to be added
+ * @head: list head to add it before
+ *
+ * Insert a new entry before the specified head.
+ * This is useful for implementing queues.
+ */
+_INLINE_ void list_add_tail(struct list_head *add, struct list_head *head)
+{
+ __list_add(add, head->prev, head);
+}
+
+/*
+ * Delete a list entry by making the prev/next entries
+ * point to each other.
+ *
+ * This is only for internal list manipulation where we know
+ * the prev/next entries already!
+ */
+_INLINE_ void __list_del(struct list_head * prev,
+ struct list_head * next)
+{
+ next->prev = prev;
+ prev->next = next;
+}
+
+/**
+ * list_del - deletes entry from list.
+ * @entry: the element to delete from the list.
+ *
+ * list_empty() on @entry does not return true after this, @entry is
+ * in an undefined state.
+ */
+_INLINE_ void list_del(struct list_head *entry)
+{
+ __list_del(entry->prev, entry->next);
+}
+
+/**
+ * list_del_init - deletes entry from list and reinitialize it.
+ * @entry: the element to delete from the list.
+ */
+_INLINE_ void list_del_init(struct list_head *entry)
+{
+ __list_del(entry->prev, entry->next);
+ INIT_LIST_HEAD(entry);
+}
+
+/**
+ * list_empty - tests whether a list is empty
+ * @head: the list to test.
+ */
+_INLINE_ int list_empty(struct list_head *head)
+{
+ return head->next == head;
+}
+
+/**
+ * list_splice - join two lists
+ * @list: the new list to add.
+ * @head: the place to add it in the first list.
+ */
+_INLINE_ void list_splice(struct list_head *list, struct list_head *head)
+{
+ struct list_head *first = list->next;
+
+ if (first != list) {
+ struct list_head *last = list->prev;
+ struct list_head *at = head->next;
+
+ first->prev = head;
+ head->next = first;
+
+ last->next = at;
+ at->prev = last;
+ }
+}
+
+/**
+ * list_entry - get the struct for this entry
+ * @ptr: the &struct list_head pointer.
+ * @type: the type of the struct this is embedded in.
+ * @member: the name of the list_struct within the struct.
+ */
+#define list_entry(ptr, type, member) \
+ ((type *)((char *)(ptr)-(unsigned long)(&((type *)0)->member)))
+
+/**
+ * list_for_each - iterate over elements in a list
+ * @pos: the &struct list_head to use as a loop counter.
+ * @head: the head for your list.
+ */
+#define list_for_each(pos, head) \
+ for (pos = (head)->next; pos != (head); pos = pos->next)
+
+/**
+ * list_for_each_safe - iterate over elements in a list, but don't dereference
+ * pos after the body is done (in case it is freed)
+ * @pos: the &struct list_head to use as a loop counter.
+ * @pnext: the &struct list_head to use as a pointer to the next item.
+ * @head: the head for your list (not included in iteration).
+ */
+#define list_for_each_safe(pos, pnext, head) \
+ for (pos = (head)->next, pnext = pos->next; pos != (head); \
+ pos = pnext, pnext = pos->next)
+
+#undef _INLINE_
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _BLKID_LIST_H */
--- /dev/null
+/*
+ * llseek.c -- stub calling the llseek system call
+ *
+ * Copyright (C) 1994, 1995, 1996, 1997 Theodore Ts'o.
+ *
+ * %Begin-Header%
+ * This file may be redistributed under the terms of the
+ * GNU Lesser General Public License.
+ * %End-Header%
+ */
+
+#define _LARGEFILE_SOURCE
+#define _LARGEFILE64_SOURCE
+
+#if HAVE_SYS_TYPES_H
+#include <sys/types.h>
+#endif
+
+#if HAVE_ERRNO_H
+#include <errno.h>
+#endif
+#if HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+#ifdef __MSDOS__
+#include <io.h>
+#endif
+
+#include "blkidP.h"
+
+#ifdef __linux__
+
+#if defined(HAVE_LSEEK64) && defined(HAVE_LSEEK64_PROTOTYPE)
+
+#define my_llseek lseek64
+
+#elif defined(HAVE_LLSEEK)
+#include <syscall.h>
+
+#ifndef HAVE_LLSEEK_PROTOTYPE
+extern long long llseek(int fd, long long offset, int origin);
+#endif
+
+#define my_llseek llseek
+
+#else /* ! HAVE_LLSEEK */
+
+#if SIZEOF_LONG == SIZEOF_LONG_LONG
+
+#define llseek lseek
+
+#else /* SIZEOF_LONG != SIZEOF_LONG_LONG */
+
+#include <linux/unistd.h>
+
+#ifndef __NR__llseek
+#define __NR__llseek 140
+#endif
+
+#ifndef __i386__
+static int _llseek(unsigned int, unsigned long, unsigned long,
+ blkid_loff_t *, unsigned int);
+
+static _syscall5(int, _llseek, unsigned int, fd, unsigned long, offset_high,
+ unsigned long, offset_low, blkid_loff_t *, result,
+ unsigned int, origin)
+#endif
+
+static blkid_loff_t my_llseek(int fd, blkid_loff_t offset, int origin)
+{
+ blkid_loff_t result;
+ int retval;
+
+#ifndef __i386__
+ retval = _llseek(fd, ((unsigned long long) offset) >> 32,
+ ((unsigned long long)offset) & 0xffffffff,
+ &result, origin);
+#else
+ retval = syscall(__NR__llseek, fd, ((unsigned long long) offset) >> 32,
+ ((unsigned long long)offset) & 0xffffffff,
+ &result, origin);
+#endif
+ return (retval == -1 ? (blkid_loff_t) retval : result);
+}
+
+#endif /* __alpha__ || __ia64__ */
+
+#endif /* HAVE_LLSEEK */
+
+blkid_loff_t blkid_llseek(int fd, blkid_loff_t offset, int whence)
+{
+ blkid_loff_t result;
+ static int do_compat = 0;
+
+ if ((sizeof(off_t) >= sizeof(blkid_loff_t)) ||
+ (offset < ((blkid_loff_t) 1 << ((sizeof(off_t)*8) -1))))
+ return lseek(fd, (off_t) offset, whence);
+
+ if (do_compat) {
+ errno = EOVERFLOW;
+ return -1;
+ }
+
+ result = my_llseek(fd, offset, whence);
+ if (result == -1 && errno == ENOSYS) {
+ /*
+ * Just in case this code runs on top of an old kernel
+ * which does not support the llseek system call
+ */
+ do_compat++;
+ errno = EOVERFLOW;
+ }
+ return result;
+}
+
+#else /* !linux */
+
+#ifndef EOVERFLOW
+#ifdef EXT2_ET_INVALID_ARGUMENT
+#define EOVERFLOW EXT2_ET_INVALID_ARGUMENT
+#else
+#define EOVERFLOW 112
+#endif
+#endif
+
+blkid_loff_t blkid_llseek(int fd, blkid_loff_t offset, int origin)
+{
+#if defined(HAVE_LSEEK64) && defined(HAVE_LSEEK64_PROTOTYPE)
+ return lseek64 (fd, offset, origin);
+#else
+ if ((sizeof(off_t) < sizeof(blkid_loff_t)) &&
+ (offset >= ((blkid_loff_t) 1 << ((sizeof(off_t)*8) - 1)))) {
+ errno = EOVERFLOW;
+ return -1;
+ }
+ return lseek(fd, (off_t) offset, origin);
+#endif
+}
+
+#endif /* linux */
+
+
--- /dev/null
+/*
+ * probe.c - identify a block device by its contents, and return a dev
+ * struct with the details
+ *
+ * Copyright (C) 1999 by Andries Brouwer
+ * Copyright (C) 1999, 2000, 2003 by Theodore Ts'o
+ * Copyright (C) 2001 by Andreas Dilger
+ * Copyright (C) 2004 Kay Sievers <kay.sievers@vrfy.org>
+ *
+ * %Begin-Header%
+ * This file may be redistributed under the terms of the
+ * GNU Lesser General Public License.
+ * %End-Header%
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <ctype.h>
+#include <sys/types.h>
+#ifdef HAVE_SYS_STAT_H
+#include <sys/stat.h>
+#endif
+#ifdef HAVE_SYS_MKDEV_H
+#include <sys/mkdev.h>
+#endif
+#include <sys/utsname.h>
+#ifdef HAVE_ERRNO_H
+#include <errno.h>
+#endif
+#include "blkidP.h"
+#include "uuid/uuid.h"
+#include "probe.h"
+
+static int figure_label_len(const unsigned char *label, int len)
+{
+ const unsigned char *end = label + len - 1;
+
+ while ((*end == ' ' || *end == 0) && end >= label)
+ --end;
+ if (end >= label) {
+ label = label;
+ return end - label + 1;
+ }
+ return 0;
+}
+
+static unsigned char *get_buffer(struct blkid_probe *pr,
+ blkid_loff_t off, size_t len)
+{
+ ssize_t ret_read;
+ unsigned char *newbuf;
+
+ if (off + len <= SB_BUFFER_SIZE) {
+ if (!pr->sbbuf) {
+ pr->sbbuf = malloc(SB_BUFFER_SIZE);
+ if (!pr->sbbuf)
+ return NULL;
+ if (lseek(pr->fd, 0, SEEK_SET) < 0)
+ return NULL;
+ ret_read = read(pr->fd, pr->sbbuf, SB_BUFFER_SIZE);
+ if (ret_read < 0)
+ ret_read = 0;
+ pr->sb_valid = ret_read;
+ }
+ if (off+len > pr->sb_valid)
+ return NULL;
+ return pr->sbbuf + off;
+ } else {
+ if (len > pr->buf_max) {
+ newbuf = realloc(pr->buf, len);
+ if (newbuf == NULL)
+ return NULL;
+ pr->buf = newbuf;
+ pr->buf_max = len;
+ }
+ if (blkid_llseek(pr->fd, off, SEEK_SET) < 0)
+ return NULL;
+ ret_read = read(pr->fd, pr->buf, len);
+ if (ret_read != (ssize_t) len)
+ return NULL;
+ return pr->buf;
+ }
+}
+
+
+/*
+ * This is a special case code to check for an MDRAID device. We do
+ * this special since it requires checking for a superblock at the end
+ * of the device.
+ */
+static int check_mdraid(int fd, unsigned char *ret_uuid)
+{
+ struct mdp_superblock_s *md;
+ blkid_loff_t offset;
+ char buf[4096];
+
+ if (fd < 0)
+ return -BLKID_ERR_PARAM;
+
+ offset = (blkid_get_dev_size(fd) & ~((blkid_loff_t)65535)) - 65536;
+
+ if (blkid_llseek(fd, offset, 0) < 0 ||
+ read(fd, buf, 4096) != 4096)
+ return -BLKID_ERR_IO;
+
+ /* Check for magic number */
+ if (memcmp("\251+N\374", buf, 4) && memcmp("\374N+\251", buf, 4))
+ return -BLKID_ERR_PARAM;
+
+ if (!ret_uuid)
+ return 0;
+ *ret_uuid = 0;
+
+ /* The MD UUID is not contiguous in the superblock, make it so */
+ md = (struct mdp_superblock_s *)buf;
+ if (md->set_uuid0 || md->set_uuid1 || md->set_uuid2 || md->set_uuid3) {
+ memcpy(ret_uuid, &md->set_uuid0, 4);
+ memcpy(ret_uuid + 4, &md->set_uuid1, 12);
+ }
+ return 0;
+}
+
+static void set_uuid(blkid_dev dev, uuid_t uuid, const char *tag)
+{
+ char str[37];
+
+ if (!uuid_is_null(uuid)) {
+ uuid_unparse(uuid, str);
+ blkid_set_tag(dev, tag ? tag : "UUID", str, sizeof(str));
+ }
+}
+
+static void get_ext2_info(blkid_dev dev, struct blkid_magic *id,
+ unsigned char *buf)
+{
+ struct ext2_super_block *es = (struct ext2_super_block *) buf;
+ const char *label = 0;
+
+ DBG(DEBUG_PROBE, printf("ext2_sb.compat = %08X:%08X:%08X\n",
+ blkid_le32(es->s_feature_compat),
+ blkid_le32(es->s_feature_incompat),
+ blkid_le32(es->s_feature_ro_compat)));
+
+ if (strlen(es->s_volume_name))
+ label = es->s_volume_name;
+ blkid_set_tag(dev, "LABEL", label, sizeof(es->s_volume_name));
+
+ set_uuid(dev, es->s_uuid, 0);
+
+ if ((es->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) &&
+ !uuid_is_null(es->s_journal_uuid))
+ set_uuid(dev, es->s_journal_uuid, "EXT_JOURNAL");
+
+ if (strcmp(id->bim_type, "ext2") &&
+ ((blkid_le32(es->s_feature_incompat) &
+ EXT2_FEATURE_INCOMPAT_UNSUPPORTED) == 0))
+ blkid_set_tag(dev, "SEC_TYPE", "ext2", sizeof("ext2"));
+}
+
+/*
+ * Check to see if a filesystem is in /proc/filesystems.
+ * Returns 1 if found, 0 if not
+ */
+static int fs_proc_check(const char *fs_name)
+{
+ FILE *f;
+ char buf[80], *cp, *t;
+
+ f = fopen("/proc/filesystems", "r");
+ if (!f)
+ return (0);
+ while (!feof(f)) {
+ if (!fgets(buf, sizeof(buf), f))
+ break;
+ cp = buf;
+ if (!isspace(*cp)) {
+ while (*cp && !isspace(*cp))
+ cp++;
+ }
+ while (*cp && isspace(*cp))
+ cp++;
+ if ((t = strchr(cp, '\n')) != NULL)
+ *t = 0;
+ if ((t = strchr(cp, '\t')) != NULL)
+ *t = 0;
+ if ((t = strchr(cp, ' ')) != NULL)
+ *t = 0;
+ if (!strcmp(fs_name, cp)) {
+ fclose(f);
+ return (1);
+ }
+ }
+ fclose(f);
+ return (0);
+}
+
+/*
+ * Check to see if a filesystem is available as a module
+ * Returns 1 if found, 0 if not
+ */
+static int check_for_modules(const char *fs_name)
+{
+ struct utsname uts;
+ FILE *f;
+ char buf[1024], *cp, *t;
+ int i;
+
+ if (uname(&uts))
+ return (0);
+ snprintf(buf, sizeof(buf), "/lib/modules/%s/modules.dep", uts.release);
+
+ f = fopen(buf, "r");
+ if (!f)
+ return (0);
+ while (!feof(f)) {
+ if (!fgets(buf, sizeof(buf), f))
+ break;
+ if ((cp = strchr(buf, ':')) != NULL)
+ *cp = 0;
+ else
+ continue;
+ if ((cp = strrchr(buf, '/')) != NULL)
+ cp++;
+ i = strlen(cp);
+ if (i > 3) {
+ t = cp + i - 3;
+ if (!strcmp(t, ".ko"))
+ *t = 0;
+ }
+ if (!strcmp(cp, fs_name))
+ return (1);
+ }
+ fclose(f);
+ return (0);
+}
+
+static int system_supports_ext4(void)
+{
+ static time_t last_check = 0;
+ static int ret = -1;
+ time_t now = time(0);
+
+ if (ret != -1 || (last_check - now) < 5)
+ return ret;
+ last_check = now;
+ ret = (fs_proc_check("ext4") || check_for_modules("ext4"));
+ return ret;
+}
+
+static int system_supports_ext4dev(void)
+{
+ static time_t last_check = 0;
+ static int ret = -1;
+ time_t now = time(0);
+
+ if (ret != -1 || (last_check - now) < 5)
+ return ret;
+ last_check = now;
+ ret = (fs_proc_check("ext4dev") || check_for_modules("ext4dev"));
+ return ret;
+}
+
+static int probe_ext4dev(struct blkid_probe *probe,
+ struct blkid_magic *id,
+ unsigned char *buf)
+{
+ struct ext2_super_block *es;
+ es = (struct ext2_super_block *)buf;
+
+ /* Distinguish from jbd */
+ if (blkid_le32(es->s_feature_incompat) &
+ EXT3_FEATURE_INCOMPAT_JOURNAL_DEV)
+ return -BLKID_ERR_PARAM;
+
+ /* ext4dev requires a journal */
+ if (!(blkid_le32(es->s_feature_compat) &
+ EXT3_FEATURE_COMPAT_HAS_JOURNAL))
+ return -BLKID_ERR_PARAM;
+
+ /*
+ * If the filesystem is marked as OK for use by in-development
+ * filesystem code, but ext4dev is not supported, and ext4 is,
+ * then don't call ourselves ext4dev, since we should be
+ * detected as ext4 in that case.
+ *
+ * If the filesystem is marked as in use by production
+ * filesystem, then it can only be used by ext4 and NOT by
+ * ext4dev, so always disclaim we are ext4dev in that case.
+ */
+ if (blkid_le32(es->s_flags) & EXT2_FLAGS_TEST_FILESYS) {
+ if (!system_supports_ext4dev() && system_supports_ext4())
+ return -BLKID_ERR_PARAM;
+ } else
+ return -BLKID_ERR_PARAM;
+
+ get_ext2_info(probe->dev, id, buf);
+ return 0;
+}
+
+static int probe_ext4(struct blkid_probe *probe, struct blkid_magic *id,
+ unsigned char *buf)
+{
+ struct ext2_super_block *es;
+ es = (struct ext2_super_block *)buf;
+
+ /* Distinguish from jbd */
+ if (blkid_le32(es->s_feature_incompat) &
+ EXT3_FEATURE_INCOMPAT_JOURNAL_DEV)
+ return -BLKID_ERR_PARAM;
+
+ /* ext4 requires journal */
+ if (!(blkid_le32(es->s_feature_compat) &
+ EXT3_FEATURE_COMPAT_HAS_JOURNAL))
+ return -BLKID_ERR_PARAM;
+
+ /* Ext4 has at least one feature which ext3 doesn't understand */
+ if (!(blkid_le32(es->s_feature_ro_compat) &
+ EXT3_FEATURE_RO_COMPAT_UNSUPPORTED) &&
+ !(blkid_le32(es->s_feature_incompat) &
+ EXT3_FEATURE_INCOMPAT_UNSUPPORTED))
+ return -BLKID_ERR_PARAM;
+
+ /*
+ * If the filesystem is a OK for use by in-development
+ * filesystem code, and ext4dev is supported or ext4 is not
+ * supported, then don't call ourselves ext4, so we can redo
+ * the detection and mark the filesystem as ext4dev.
+ *
+ * If the filesystem is marked as in use by production
+ * filesystem, then it can only be used by ext4 and NOT by
+ * ext4dev.
+ */
+ if (blkid_le32(es->s_flags) & EXT2_FLAGS_TEST_FILESYS) {
+ if (system_supports_ext4dev() || !system_supports_ext4())
+ return -BLKID_ERR_PARAM;
+ }
+ get_ext2_info(probe->dev, id, buf);
+ return 0;
+}
+
+static int probe_ext3(struct blkid_probe *probe, struct blkid_magic *id,
+ unsigned char *buf)
+{
+ struct ext2_super_block *es;
+ es = (struct ext2_super_block *)buf;
+
+ /* Distinguish from ext4dev */
+ if (blkid_le32(es->s_flags) & EXT2_FLAGS_TEST_FILESYS)
+ return -BLKID_ERR_PARAM;
+
+ /* ext3 requires journal */
+ if (!(blkid_le32(es->s_feature_compat) &
+ EXT3_FEATURE_COMPAT_HAS_JOURNAL))
+ return -BLKID_ERR_PARAM;
+
+ /* Any features which ext3 doesn't understand */
+ if ((blkid_le32(es->s_feature_ro_compat) &
+ EXT3_FEATURE_RO_COMPAT_UNSUPPORTED) ||
+ (blkid_le32(es->s_feature_incompat) &
+ EXT3_FEATURE_INCOMPAT_UNSUPPORTED))
+ return -BLKID_ERR_PARAM;
+
+ get_ext2_info(probe->dev, id, buf);
+ return 0;
+}
+
+static int probe_ext2(struct blkid_probe *probe, struct blkid_magic *id,
+ unsigned char *buf)
+{
+ struct ext2_super_block *es;
+
+ es = (struct ext2_super_block *)buf;
+
+ /* Distinguish between ext3 and ext2 */
+ if ((blkid_le32(es->s_feature_compat) &
+ EXT3_FEATURE_COMPAT_HAS_JOURNAL))
+ return -BLKID_ERR_PARAM;
+
+ /* Any features which ext2 doesn't understand */
+ if ((blkid_le32(es->s_feature_ro_compat) &
+ EXT2_FEATURE_RO_COMPAT_UNSUPPORTED) ||
+ (blkid_le32(es->s_feature_incompat) &
+ EXT2_FEATURE_INCOMPAT_UNSUPPORTED))
+ return -BLKID_ERR_PARAM;
+
+ get_ext2_info(probe->dev, id, buf);
+ return 0;
+}
+
+static int probe_jbd(struct blkid_probe *probe, struct blkid_magic *id,
+ unsigned char *buf)
+{
+ struct ext2_super_block *es = (struct ext2_super_block *) buf;
+
+ if (!(blkid_le32(es->s_feature_incompat) &
+ EXT3_FEATURE_INCOMPAT_JOURNAL_DEV))
+ return -BLKID_ERR_PARAM;
+
+ get_ext2_info(probe->dev, id, buf);
+
+ return 0;
+}
+
+#define FAT_ATTR_VOLUME_ID 0x08
+#define FAT_ATTR_DIR 0x10
+#define FAT_ATTR_LONG_NAME 0x0f
+#define FAT_ATTR_MASK 0x3f
+#define FAT_ENTRY_FREE 0xe5
+
+static const char *no_name = "NO NAME ";
+
+static unsigned char *search_fat_label(struct vfat_dir_entry *dir, int count)
+{
+ int i;
+
+ for (i = 0; i < count; i++) {
+ if (dir[i].name[0] == 0x00)
+ break;
+
+ if ((dir[i].name[0] == FAT_ENTRY_FREE) ||
+ (dir[i].cluster_high != 0 || dir[i].cluster_low != 0) ||
+ ((dir[i].attr & FAT_ATTR_MASK) == FAT_ATTR_LONG_NAME))
+ continue;
+
+ if ((dir[i].attr & (FAT_ATTR_VOLUME_ID | FAT_ATTR_DIR)) ==
+ FAT_ATTR_VOLUME_ID) {
+ return dir[i].name;
+ }
+ }
+ return 0;
+}
+
+/* FAT label extraction from the root directory taken from Kay
+ * Sievers's volume_id library */
+static int probe_fat(struct blkid_probe *probe,
+ struct blkid_magic *id __BLKID_ATTR((unused)),
+ unsigned char *buf)
+{
+ struct vfat_super_block *vs = (struct vfat_super_block *) buf;
+ struct msdos_super_block *ms = (struct msdos_super_block *) buf;
+ struct vfat_dir_entry *dir;
+ char serno[10];
+ const unsigned char *label = 0, *vol_label = 0, *tmp;
+ unsigned char *vol_serno;
+ int label_len = 0, maxloop = 100;
+ __u16 sector_size, dir_entries, reserved;
+ __u32 sect_count, fat_size, dir_size, cluster_count, fat_length;
+ __u32 buf_size, start_data_sect, next, root_start, root_dir_entries;
+
+ /* sector size check */
+ tmp = (unsigned char *)&ms->ms_sector_size;
+ sector_size = tmp[0] + (tmp[1] << 8);
+ if (sector_size != 0x200 && sector_size != 0x400 &&
+ sector_size != 0x800 && sector_size != 0x1000)
+ return 1;
+
+ tmp = (unsigned char *)&ms->ms_dir_entries;
+ dir_entries = tmp[0] + (tmp[1] << 8);
+ reserved = blkid_le16(ms->ms_reserved);
+ tmp = (unsigned char *)&ms->ms_sectors;
+ sect_count = tmp[0] + (tmp[1] << 8);
+ if (sect_count == 0)
+ sect_count = blkid_le32(ms->ms_total_sect);
+
+ fat_length = blkid_le16(ms->ms_fat_length);
+ if (fat_length == 0)
+ fat_length = blkid_le32(vs->vs_fat32_length);
+
+ fat_size = fat_length * ms->ms_fats;
+ dir_size = ((dir_entries * sizeof(struct vfat_dir_entry)) +
+ (sector_size-1)) / sector_size;
+
+ cluster_count = sect_count - (reserved + fat_size + dir_size);
+ if (ms->ms_cluster_size == 0)
+ return 1;
+ cluster_count /= ms->ms_cluster_size;
+
+ if (cluster_count > FAT32_MAX)
+ return 1;
+
+ if (ms->ms_fat_length) {
+ /* the label may be an attribute in the root directory */
+ root_start = (reserved + fat_size) * sector_size;
+ root_dir_entries = vs->vs_dir_entries[0] +
+ (vs->vs_dir_entries[1] << 8);
+
+ buf_size = root_dir_entries * sizeof(struct vfat_dir_entry);
+ dir = (struct vfat_dir_entry *) get_buffer(probe, root_start,
+ buf_size);
+ if (dir)
+ vol_label = search_fat_label(dir, root_dir_entries);
+
+ if (!vol_label || !memcmp(vol_label, no_name, 11))
+ vol_label = ms->ms_label;
+ vol_serno = ms->ms_serno;
+
+ blkid_set_tag(probe->dev, "SEC_TYPE", "msdos",
+ sizeof("msdos"));
+ } else {
+ /* Search the FAT32 root dir for the label attribute */
+ buf_size = vs->vs_cluster_size * sector_size;
+ start_data_sect = reserved + fat_size;
+
+ next = blkid_le32(vs->vs_root_cluster);
+ while (next && --maxloop) {
+ __u32 next_sect_off;
+ __u64 next_off, fat_entry_off;
+ int count;
+
+ next_sect_off = (next - 2) * vs->vs_cluster_size;
+ next_off = (start_data_sect + next_sect_off) *
+ sector_size;
+
+ dir = (struct vfat_dir_entry *)
+ get_buffer(probe, next_off, buf_size);
+ if (dir == NULL)
+ break;
+
+ count = buf_size / sizeof(struct vfat_dir_entry);
+
+ vol_label = search_fat_label(dir, count);
+ if (vol_label)
+ break;
+
+ /* get FAT entry */
+ fat_entry_off = (reserved * sector_size) +
+ (next * sizeof(__u32));
+ buf = get_buffer(probe, fat_entry_off, buf_size);
+ if (buf == NULL)
+ break;
+
+ /* set next cluster */
+ next = blkid_le32(*((__u32 *) buf) & 0x0fffffff);
+ }
+
+ if (!vol_label || !memcmp(vol_label, no_name, 11))
+ vol_label = vs->vs_label;
+ vol_serno = vs->vs_serno;
+ }
+
+ if (vol_label && memcmp(vol_label, no_name, 11)) {
+ if ((label_len = figure_label_len(vol_label, 11)))
+ label = vol_label;
+ }
+
+ /* We can't just print them as %04X, because they are unaligned */
+ sprintf(serno, "%02X%02X-%02X%02X", vol_serno[3], vol_serno[2],
+ vol_serno[1], vol_serno[0]);
+
+ blkid_set_tag(probe->dev, "LABEL", (const char *) label, label_len);
+ blkid_set_tag(probe->dev, "UUID", serno, sizeof(serno)-1);
+
+ return 0;
+}
+
+/*
+ * The FAT filesystem could be without a magic string in superblock
+ * (e.g. old floppies). This heuristic for FAT detection is inspired
+ * by http://vrfy.org/projects/volume_id/ and Linux kernel.
+ * [7-Jul-2005, Karel Zak <kzak@redhat.com>]
+ */
+static int probe_fat_nomagic(struct blkid_probe *probe,
+ struct blkid_magic *id __BLKID_ATTR((unused)),
+ unsigned char *buf)
+{
+ struct msdos_super_block *ms;
+
+ ms = (struct msdos_super_block *)buf;
+
+ /* heads check */
+ if (ms->ms_heads == 0)
+ return 1;
+
+ /* cluster size check*/
+ if (ms->ms_cluster_size == 0 ||
+ (ms->ms_cluster_size & (ms->ms_cluster_size-1)))
+ return 1;
+
+ /* media check */
+ if (ms->ms_media < 0xf8 && ms->ms_media != 0xf0)
+ return 1;
+
+ /* fat counts(Linux kernel expects at least 1 FAT table) */
+ if (!ms->ms_fats)
+ return 1;
+
+ /*
+ * OS/2 and apparently DFSee will place a FAT12/16-like
+ * pseudo-superblock in the first 512 bytes of non-FAT
+ * filesystems --- at least JFS and HPFS, and possibly others.
+ * So we explicitly check for those filesystems at the
+ * FAT12/16 filesystem magic field identifier, and if they are
+ * present, we rule this out as a FAT filesystem, despite the
+ * FAT-like pseudo-header.
+ */
+ if ((memcmp(ms->ms_magic, "JFS ", 8) == 0) ||
+ (memcmp(ms->ms_magic, "HPFS ", 8) == 0))
+ return 1;
+
+ return probe_fat(probe, id, buf);
+}
+
+static int probe_ntfs(struct blkid_probe *probe,
+ struct blkid_magic *id __BLKID_ATTR((unused)),
+ unsigned char *buf)
+{
+ struct ntfs_super_block *ns;
+ struct master_file_table_record *mft;
+ struct file_attribute *attr;
+ char uuid_str[17], label_str[129], *cp;
+ int bytes_per_sector, sectors_per_cluster;
+ int mft_record_size, attr_off, attr_len;
+ unsigned int i, attr_type, val_len;
+ int val_off;
+ __u64 nr_clusters;
+ blkid_loff_t off;
+ unsigned char *buf_mft, *val;
+
+ ns = (struct ntfs_super_block *) buf;
+
+ bytes_per_sector = ns->bios_parameter_block[0] +
+ (ns->bios_parameter_block[1] << 8);
+ sectors_per_cluster = ns->bios_parameter_block[2];
+
+ if ((bytes_per_sector < 512) || (sectors_per_cluster == 0))
+ return 1;
+
+ if (ns->cluster_per_mft_record < 0)
+ mft_record_size = 1 << (0-ns->cluster_per_mft_record);
+ else
+ mft_record_size = ns->cluster_per_mft_record *
+ sectors_per_cluster * bytes_per_sector;
+ nr_clusters = blkid_le64(ns->number_of_sectors) / sectors_per_cluster;
+
+ if ((blkid_le64(ns->mft_cluster_location) > nr_clusters) ||
+ (blkid_le64(ns->mft_mirror_cluster_location) > nr_clusters))
+ return 1;
+
+ off = blkid_le64(ns->mft_mirror_cluster_location) *
+ bytes_per_sector * sectors_per_cluster;
+
+ buf_mft = get_buffer(probe, off, mft_record_size);
+ if (!buf_mft)
+ return 1;
+
+ if (memcmp(buf_mft, "FILE", 4))
+ return 1;
+
+ off = blkid_le64(ns->mft_cluster_location) * bytes_per_sector *
+ sectors_per_cluster;
+
+ buf_mft = get_buffer(probe, off, mft_record_size);
+ if (!buf_mft)
+ return 1;
+
+ if (memcmp(buf_mft, "FILE", 4))
+ return 1;
+
+ off += MFT_RECORD_VOLUME * mft_record_size;
+
+ buf_mft = get_buffer(probe, off, mft_record_size);
+ if (!buf_mft)
+ return 1;
+
+ if (memcmp(buf_mft, "FILE", 4))
+ return 1;
+
+ mft = (struct master_file_table_record *) buf_mft;
+
+ attr_off = blkid_le16(mft->attrs_offset);
+ label_str[0] = 0;
+
+ while (1) {
+ attr = (struct file_attribute *) (buf_mft + attr_off);
+ attr_len = blkid_le16(attr->len);
+ attr_type = blkid_le32(attr->type);
+ val_off = blkid_le16(attr->value_offset);
+ val_len = blkid_le32(attr->value_len);
+
+ attr_off += attr_len;
+
+ if ((attr_off > mft_record_size) ||
+ (attr_len == 0))
+ break;
+
+ if (attr_type == MFT_RECORD_ATTR_END)
+ break;
+
+ if (attr_type == MFT_RECORD_ATTR_VOLUME_NAME) {
+ if (val_len > sizeof(label_str))
+ val_len = sizeof(label_str)-1;
+
+ for (i=0, cp=label_str; i < val_len; i+=2,cp++) {
+ val = ((__u8 *) attr) + val_off + i;
+ *cp = val[0];
+ if (val[1])
+ *cp = '?';
+ }
+ *cp = 0;
+ }
+ }
+
+ sprintf(uuid_str, "%016llX", blkid_le64(ns->volume_serial));
+ blkid_set_tag(probe->dev, "UUID", uuid_str, 0);
+ if (label_str[0])
+ blkid_set_tag(probe->dev, "LABEL", label_str, 0);
+ return 0;
+}
+
+
+static int probe_xfs(struct blkid_probe *probe,
+ struct blkid_magic *id __BLKID_ATTR((unused)),
+ unsigned char *buf)
+{
+ struct xfs_super_block *xs;
+ const char *label = 0;
+
+ xs = (struct xfs_super_block *)buf;
+
+ if (strlen(xs->xs_fname))
+ label = xs->xs_fname;
+ blkid_set_tag(probe->dev, "LABEL", label, sizeof(xs->xs_fname));
+ set_uuid(probe->dev, xs->xs_uuid, 0);
+ return 0;
+}
+
+static int probe_reiserfs(struct blkid_probe *probe,
+ struct blkid_magic *id, unsigned char *buf)
+{
+ struct reiserfs_super_block *rs = (struct reiserfs_super_block *) buf;
+ unsigned int blocksize;
+ const char *label = 0;
+
+ blocksize = blkid_le16(rs->rs_blocksize);
+
+ /* The blocksize must be at least 1k */
+ if ((blocksize >> 10) == 0)
+ return -BLKID_ERR_PARAM;
+
+ /* If the superblock is inside the journal, we have the wrong one */
+ if (id->bim_kboff/(blocksize>>10) > blkid_le32(rs->rs_journal_block))
+ return -BLKID_ERR_BIG;
+
+ /* LABEL/UUID are only valid for later versions of Reiserfs v3.6. */
+ if (id->bim_magic[6] == '2' || id->bim_magic[6] == '3') {
+ if (strlen(rs->rs_label))
+ label = rs->rs_label;
+ set_uuid(probe->dev, rs->rs_uuid, 0);
+ }
+ blkid_set_tag(probe->dev, "LABEL", label, sizeof(rs->rs_label));
+
+ return 0;
+}
+
+static int probe_reiserfs4(struct blkid_probe *probe,
+ struct blkid_magic *id __BLKID_ATTR((unused)),
+ unsigned char *buf)
+{
+ struct reiser4_super_block *rs4 = (struct reiser4_super_block *) buf;
+ const unsigned char *label = 0;
+
+ if (strlen((char *) rs4->rs4_label))
+ label = rs4->rs4_label;
+ set_uuid(probe->dev, rs4->rs4_uuid, 0);
+ blkid_set_tag(probe->dev, "LABEL", (const char *) label,
+ sizeof(rs4->rs4_label));
+
+ return 0;
+}
+
+static int probe_jfs(struct blkid_probe *probe,
+ struct blkid_magic *id __BLKID_ATTR((unused)),
+ unsigned char *buf)
+{
+ struct jfs_super_block *js;
+ const char *label = 0;
+
+ js = (struct jfs_super_block *)buf;
+
+ if (blkid_le32(js->js_bsize) != (1 << blkid_le16(js->js_l2bsize)))
+ return 1;
+
+ if (blkid_le32(js->js_pbsize) != (1 << blkid_le16(js->js_l2pbsize)))
+ return 1;
+
+ if ((blkid_le16(js->js_l2bsize) - blkid_le16(js->js_l2pbsize)) !=
+ blkid_le16(js->js_l2bfactor))
+ return 1;
+
+ if (strlen((char *) js->js_label))
+ label = (char *) js->js_label;
+ blkid_set_tag(probe->dev, "LABEL", label, sizeof(js->js_label));
+ set_uuid(probe->dev, js->js_uuid, 0);
+ return 0;
+}
+
+static int probe_zfs(struct blkid_probe *probe, struct blkid_magic *id,
+ unsigned char *buf)
+{
+#if 0
+ char *vdev_label;
+ const char *pool_name = 0;
+
+ /* read nvpair data for pool name, pool GUID (complex) */
+ blkid_set_tag(probe->dev, "LABEL", pool_name, sizeof(pool_name));
+ set_uuid(probe->dev, pool_guid, 0);
+#endif
+ return 0;
+}
+
+static int probe_luks(struct blkid_probe *probe,
+ struct blkid_magic *id __BLKID_ATTR((unused)),
+ unsigned char *buf)
+{
+ char uuid[40];
+
+ /* 168 is the offset to the 40 character uuid:
+ * http://luks.endorphin.org/LUKS-on-disk-format.pdf */
+ strncpy(uuid, (char *) buf+168, 40);
+ blkid_set_tag(probe->dev, "UUID", uuid, sizeof(uuid));
+ return 0;
+}
+
+static int probe_romfs(struct blkid_probe *probe,
+ struct blkid_magic *id __BLKID_ATTR((unused)),
+ unsigned char *buf)
+{
+ struct romfs_super_block *ros;
+ const char *label = 0;
+
+ ros = (struct romfs_super_block *)buf;
+
+ if (strlen((char *) ros->ros_volume))
+ label = (char *) ros->ros_volume;
+ blkid_set_tag(probe->dev, "LABEL", label, 0);
+ return 0;
+}
+
+static int probe_cramfs(struct blkid_probe *probe,
+ struct blkid_magic *id __BLKID_ATTR((unused)),
+ unsigned char *buf)
+{
+ struct cramfs_super_block *csb;
+ const char *label = 0;
+
+ csb = (struct cramfs_super_block *)buf;
+
+ if (strlen((char *) csb->name))
+ label = (char *) csb->name;
+ blkid_set_tag(probe->dev, "LABEL", label, 0);
+ return 0;
+}
+
+static int probe_swap0(struct blkid_probe *probe,
+ struct blkid_magic *id __BLKID_ATTR((unused)),
+ unsigned char *buf __BLKID_ATTR((unused)))
+{
+ blkid_set_tag(probe->dev, "UUID", 0, 0);
+ blkid_set_tag(probe->dev, "LABEL", 0, 0);
+ return 0;
+}
+
+static int probe_swap1(struct blkid_probe *probe,
+ struct blkid_magic *id,
+ unsigned char *buf __BLKID_ATTR((unused)))
+{
+ struct swap_id_block *sws;
+
+ probe_swap0(probe, id, buf);
+ /*
+ * Version 1 swap headers are always located at offset of 1024
+ * bytes, although the swap signature itself is located at the
+ * end of the page (which may vary depending on hardware
+ * pagesize).
+ */
+ sws = (struct swap_id_block *) get_buffer(probe, 1024, 1024);
+ if (!sws)
+ return 1;
+
+ /* check for wrong version or zeroed pagecount, for sanity */
+ if (!memcmp(id->bim_magic, "SWAPSPACE2", id->bim_len) &&
+ (sws->sws_version != 1 || sws->sws_lastpage == 0))
+ return 1;
+
+ /* arbitrary sanity check.. is there any garbage down there? */
+ if (sws->sws_pad[32] == 0 && sws->sws_pad[33] == 0) {
+ if (sws->sws_volume[0])
+ blkid_set_tag(probe->dev, "LABEL", sws->sws_volume,
+ sizeof(sws->sws_volume));
+ if (sws->sws_uuid[0])
+ set_uuid(probe->dev, sws->sws_uuid, 0);
+ }
+ return 0;
+}
+
+static int probe_iso9660(struct blkid_probe *probe,
+ struct blkid_magic *id __BLKID_ATTR((unused)),
+ unsigned char *buf)
+{
+ struct iso_volume_descriptor *iso;
+ const unsigned char *label;
+
+ iso = (struct iso_volume_descriptor *) buf;
+ label = iso->volume_id;
+
+ blkid_set_tag(probe->dev, "LABEL", (const char *) label,
+ figure_label_len(label, 32));
+ return 0;
+}
+
+
+static const char
+*udf_magic[] = { "BEA01", "BOOT2", "CD001", "CDW02", "NSR02",
+ "NSR03", "TEA01", 0 };
+
+static int probe_udf(struct blkid_probe *probe,
+ struct blkid_magic *id __BLKID_ATTR((unused)),
+ unsigned char *buf __BLKID_ATTR((unused)))
+{
+ int j, bs;
+ struct iso_volume_descriptor *isosb;
+ const char ** m;
+
+ /* determine the block size by scanning in 2K increments
+ (block sizes larger than 2K will be null padded) */
+ for (bs = 1; bs < 16; bs++) {
+ isosb = (struct iso_volume_descriptor *)
+ get_buffer(probe, bs*2048+32768, sizeof(isosb));
+ if (!isosb)
+ return 1;
+ if (isosb->vd_id[0])
+ break;
+ }
+
+ /* Scan up to another 64 blocks looking for additional VSD's */
+ for (j = 1; j < 64; j++) {
+ if (j > 1) {
+ isosb = (struct iso_volume_descriptor *)
+ get_buffer(probe, j*bs*2048+32768,
+ sizeof(isosb));
+ if (!isosb)
+ return 1;
+ }
+ /* If we find NSR0x then call it udf:
+ NSR01 for UDF 1.00
+ NSR02 for UDF 1.50
+ NSR03 for UDF 2.00 */
+ if (!memcmp(isosb->vd_id, "NSR0", 4))
+ return probe_iso9660(probe, id, buf);
+ for (m = udf_magic; *m; m++)
+ if (!memcmp(*m, isosb->vd_id, 5))
+ break;
+ if (*m == 0)
+ return 1;
+ }
+ return 1;
+}
+
+static int probe_ocfs(struct blkid_probe *probe,
+ struct blkid_magic *id __BLKID_ATTR((unused)),
+ unsigned char *buf)
+{
+ struct ocfs_volume_header ovh;
+ struct ocfs_volume_label ovl;
+ __u32 major;
+
+ memcpy(&ovh, buf, sizeof(ovh));
+ memcpy(&ovl, buf+512, sizeof(ovl));
+
+ major = ocfsmajor(ovh);
+ if (major == 1)
+ blkid_set_tag(probe->dev,"SEC_TYPE","ocfs1",sizeof("ocfs1"));
+ else if (major >= 9)
+ blkid_set_tag(probe->dev,"SEC_TYPE","ntocfs",sizeof("ntocfs"));
+
+ blkid_set_tag(probe->dev, "LABEL", ovl.label, ocfslabellen(ovl));
+ blkid_set_tag(probe->dev, "MOUNT", ovh.mount, ocfsmountlen(ovh));
+ set_uuid(probe->dev, ovl.vol_id, 0);
+ return 0;
+}
+
+static int probe_ocfs2(struct blkid_probe *probe,
+ struct blkid_magic *id __BLKID_ATTR((unused)),
+ unsigned char *buf)
+{
+ struct ocfs2_super_block *osb;
+
+ osb = (struct ocfs2_super_block *)buf;
+
+ blkid_set_tag(probe->dev, "LABEL", osb->s_label, sizeof(osb->s_label));
+ set_uuid(probe->dev, osb->s_uuid, 0);
+ return 0;
+}
+
+static int probe_oracleasm(struct blkid_probe *probe,
+ struct blkid_magic *id __BLKID_ATTR((unused)),
+ unsigned char *buf)
+{
+ struct oracle_asm_disk_label *dl;
+
+ dl = (struct oracle_asm_disk_label *)buf;
+
+ blkid_set_tag(probe->dev, "LABEL", dl->dl_id, sizeof(dl->dl_id));
+ return 0;
+}
+
+static int probe_gfs(struct blkid_probe *probe,
+ struct blkid_magic *id __BLKID_ATTR((unused)),
+ unsigned char *buf)
+{
+ struct gfs2_sb *sbd;
+ const char *label = 0;
+
+ sbd = (struct gfs2_sb *)buf;
+
+ if (blkid_be32(sbd->sb_fs_format) == GFS_FORMAT_FS &&
+ blkid_be32(sbd->sb_multihost_format) == GFS_FORMAT_MULTI)
+ {
+ blkid_set_tag(probe->dev, "UUID", 0, 0);
+
+ if (strlen(sbd->sb_locktable))
+ label = sbd->sb_locktable;
+ blkid_set_tag(probe->dev, "LABEL", label, sizeof(sbd->sb_locktable));
+ return 0;
+ }
+ return 1;
+}
+
+static int probe_gfs2(struct blkid_probe *probe,
+ struct blkid_magic *id __BLKID_ATTR((unused)),
+ unsigned char *buf)
+{
+ struct gfs2_sb *sbd;
+ const char *label = 0;
+
+ sbd = (struct gfs2_sb *)buf;
+
+ if (blkid_be32(sbd->sb_fs_format) == GFS2_FORMAT_FS &&
+ blkid_be32(sbd->sb_multihost_format) == GFS2_FORMAT_MULTI)
+ {
+ blkid_set_tag(probe->dev, "UUID", 0, 0);
+
+ if (strlen(sbd->sb_locktable))
+ label = sbd->sb_locktable;
+ blkid_set_tag(probe->dev, "LABEL", label, sizeof(sbd->sb_locktable));
+ return 0;
+ }
+ return 1;
+}
+
+static void unicode_16be_to_utf8(unsigned char *str, int out_len,
+ const unsigned char *buf, int in_len)
+{
+ int i, j;
+ unsigned int c;
+
+ for (i = j = 0; i + 2 <= in_len; i += 2) {
+ c = (buf[i] << 8) | buf[i+1];
+ if (c == 0) {
+ str[j] = '\0';
+ break;
+ } else if (c < 0x80) {
+ if (j+1 >= out_len)
+ break;
+ str[j++] = (unsigned char) c;
+ } else if (c < 0x800) {
+ if (j+2 >= out_len)
+ break;
+ str[j++] = (unsigned char) (0xc0 | (c >> 6));
+ str[j++] = (unsigned char) (0x80 | (c & 0x3f));
+ } else {
+ if (j+3 >= out_len)
+ break;
+ str[j++] = (unsigned char) (0xe0 | (c >> 12));
+ str[j++] = (unsigned char) (0x80 | ((c >> 6) & 0x3f));
+ str[j++] = (unsigned char) (0x80 | (c & 0x3f));
+ }
+ }
+ str[j] = '\0';
+}
+
+static int probe_hfs(struct blkid_probe *probe __BLKID_ATTR((unused)),
+ struct blkid_magic *id __BLKID_ATTR((unused)),
+ unsigned char *buf)
+{
+ struct hfs_mdb *hfs = (struct hfs_mdb *) buf;
+ char uuid_str[17];
+ __u64 uuid;
+
+ if ((memcmp(hfs->embed_sig, "H+", 2) == 0) ||
+ (memcmp(hfs->embed_sig, "HX", 2) == 0))
+ return 1; /* Not hfs, but an embedded HFS+ */
+
+ uuid = blkid_le64(*((unsigned long long *) hfs->finder_info.id));
+ if (uuid) {
+ sprintf(uuid_str, "%016llX", uuid);
+ blkid_set_tag(probe->dev, "UUID", uuid_str, 0);
+ }
+ blkid_set_tag(probe->dev, "LABEL", hfs->label, hfs->label_len);
+ return 0;
+}
+
+
+static int probe_hfsplus(struct blkid_probe *probe,
+ struct blkid_magic *id,
+ unsigned char *buf)
+{
+ struct hfsplus_extent extents[HFSPLUS_EXTENT_COUNT];
+ struct hfsplus_bnode_descriptor *descr;
+ struct hfsplus_bheader_record *bnode;
+ struct hfsplus_catalog_key *key;
+ struct hfsplus_vol_header *hfsplus;
+ struct hfs_mdb *sbd = (struct hfs_mdb *) buf;
+ unsigned int alloc_block_size;
+ unsigned int alloc_first_block;
+ unsigned int embed_first_block;
+ unsigned int off = 0;
+ unsigned int blocksize;
+ unsigned int cat_block;
+ unsigned int ext_block_start;
+ unsigned int ext_block_count;
+ unsigned int record_count;
+ unsigned int leaf_node_head;
+ unsigned int leaf_node_count;
+ unsigned int leaf_node_size;
+ unsigned int leaf_block;
+ unsigned int label_len;
+ int ext;
+ __u64 leaf_off, uuid;
+ char uuid_str[17], label[512];
+
+ /* Check for a HFS+ volume embedded in a HFS volume */
+ if (memcmp(sbd->signature, "BD", 2) == 0) {
+ if ((memcmp(sbd->embed_sig, "H+", 2) != 0) &&
+ (memcmp(sbd->embed_sig, "HX", 2) != 0))
+ /* This must be an HFS volume, so fail */
+ return 1;
+
+ alloc_block_size = blkid_be32(sbd->al_blk_size);
+ alloc_first_block = blkid_be16(sbd->al_bl_st);
+ embed_first_block = blkid_be16(sbd->embed_startblock);
+ off = (alloc_first_block * 512) +
+ (embed_first_block * alloc_block_size);
+ buf = get_buffer(probe, off + (id->bim_kboff * 1024),
+ sizeof(sbd));
+ if (!buf)
+ return 1;
+
+ hfsplus = (struct hfsplus_vol_header *) buf;
+ }
+
+ hfsplus = (struct hfsplus_vol_header *) buf;
+
+ if ((memcmp(hfsplus->signature, "H+", 2) != 0) &&
+ (memcmp(hfsplus->signature, "HX", 2) != 0))
+ return 1;
+
+ uuid = blkid_le64(*((unsigned long long *) hfsplus->finder_info.id));
+ if (uuid) {
+ sprintf(uuid_str, "%016llX", uuid);
+ blkid_set_tag(probe->dev, "UUID", uuid_str, 0);
+ }
+
+ blocksize = blkid_be32(hfsplus->blocksize);
+ memcpy(extents, hfsplus->cat_file.extents, sizeof(extents));
+ cat_block = blkid_be32(extents[0].start_block);
+
+ buf = get_buffer(probe, off + (cat_block * blocksize), 0x2000);
+ if (!buf)
+ return 0;
+
+ bnode = (struct hfsplus_bheader_record *)
+ &buf[sizeof(struct hfsplus_bnode_descriptor)];
+
+ leaf_node_head = blkid_be32(bnode->leaf_head);
+ leaf_node_size = blkid_be16(bnode->node_size);
+ leaf_node_count = blkid_be32(bnode->leaf_count);
+ if (leaf_node_count == 0)
+ return 0;
+
+ leaf_block = (leaf_node_head * leaf_node_size) / blocksize;
+
+ /* get physical location */
+ for (ext = 0; ext < HFSPLUS_EXTENT_COUNT; ext++) {
+ ext_block_start = blkid_be32(extents[ext].start_block);
+ ext_block_count = blkid_be32(extents[ext].block_count);
+ if (ext_block_count == 0)
+ return 0;
+
+ /* this is our extent */
+ if (leaf_block < ext_block_count)
+ break;
+
+ leaf_block -= ext_block_count;
+ }
+ if (ext == HFSPLUS_EXTENT_COUNT)
+ return 0;
+
+ leaf_off = (ext_block_start + leaf_block) * blocksize;
+
+ buf = get_buffer(probe, off + leaf_off, leaf_node_size);
+ if (!buf)
+ return 0;
+
+ descr = (struct hfsplus_bnode_descriptor *) buf;
+ record_count = blkid_be16(descr->num_recs);
+ if (record_count == 0)
+ return 0;
+
+ if (descr->type != HFS_NODE_LEAF)
+ return 0;
+
+ key = (struct hfsplus_catalog_key *)
+ &buf[sizeof(struct hfsplus_bnode_descriptor)];
+
+ if (blkid_be32(key->parent_id) != HFSPLUS_POR_CNID)
+ return 0;
+
+ label_len = blkid_be16(key->unicode_len) * 2;
+ unicode_16be_to_utf8(label, sizeof(label), key->unicode, label_len);
+ blkid_set_tag(probe->dev, "LABEL", label, 0);
+ return 0;
+}
+
+#define LVM2_LABEL_SIZE 512
+static unsigned int lvm2_calc_crc(const void *buf, unsigned int size)
+{
+ static const unsigned int crctab[] = {
+ 0x00000000, 0x1db71064, 0x3b6e20c8, 0x26d930ac,
+ 0x76dc4190, 0x6b6b51f4, 0x4db26158, 0x5005713c,
+ 0xedb88320, 0xf00f9344, 0xd6d6a3e8, 0xcb61b38c,
+ 0x9b64c2b0, 0x86d3d2d4, 0xa00ae278, 0xbdbdf21c
+ };
+ unsigned int i, crc = 0xf597a6cf;
+ const __u8 *data = (const __u8 *) buf;
+
+ for (i = 0; i < size; i++) {
+ crc ^= *data++;
+ crc = (crc >> 4) ^ crctab[crc & 0xf];
+ crc = (crc >> 4) ^ crctab[crc & 0xf];
+ }
+ return crc;
+}
+
+static int probe_lvm2(struct blkid_probe *probe,
+ struct blkid_magic *id,
+ unsigned char *buf)
+{
+ int sector = (id->bim_kboff) << 1;
+ struct lvm2_pv_label_header *label= (struct lvm2_pv_label_header *)buf;
+ char *p, *q, uuid[40];
+ unsigned int i, b;
+
+ /* buf is at 0k or 1k offset; find label inside */
+ if (memcmp(buf, "LABELONE", 8) == 0) {
+ label = (struct lvm2_pv_label_header *)buf;
+ } else if (memcmp(buf + 512, "LABELONE", 8) == 0) {
+ label = (struct lvm2_pv_label_header *)(buf + 512);
+ sector++;
+ } else {
+ return 1;
+ }
+
+ if (blkid_le64(label->sector_xl) != (unsigned) sector) {
+ DBG(DEBUG_PROBE,
+ printf("LVM2: label for sector %llu found at sector %d\n",
+ blkid_le64(label->sector_xl), sector));
+ return 1;
+ }
+
+ if (lvm2_calc_crc(&label->offset_xl, LVM2_LABEL_SIZE -
+ ((char *)&label->offset_xl - (char *)label)) !=
+ blkid_le32(label->crc_xl)) {
+ DBG(DEBUG_PROBE,
+ printf("LVM2: label checksum incorrect at sector %d\n",
+ sector));
+ return 1;
+ }
+
+ for (i=0, b=1, p=uuid, q= (char *) label->pv_uuid; i <= 32;
+ i++, b <<= 1) {
+ if (b & 0x4444440)
+ *p++ = '-';
+ *p++ = *q++;
+ }
+
+ blkid_set_tag(probe->dev, "UUID", uuid, LVM2_ID_LEN+6);
+
+ return 0;
+}
+/*
+ * Various filesystem magics that we can check for. Note that kboff and
+ * sboff are in kilobytes and bytes respectively. All magics are in
+ * byte strings so we don't worry about endian issues.
+ */
+static struct blkid_magic type_array[] = {
+/* type kboff sboff len magic probe */
+ { "oracleasm", 0, 32, 8, "ORCLDISK", probe_oracleasm },
+ { "ntfs", 0, 3, 8, "NTFS ", probe_ntfs },
+ { "jbd", 1, 0x38, 2, "\123\357", probe_jbd },
+ { "ext4dev", 1, 0x38, 2, "\123\357", probe_ext4dev },
+ { "ext4", 1, 0x38, 2, "\123\357", probe_ext4 },
+ { "ext3", 1, 0x38, 2, "\123\357", probe_ext3 },
+ { "ext2", 1, 0x38, 2, "\123\357", probe_ext2 },
+ { "reiserfs", 8, 0x34, 8, "ReIsErFs", probe_reiserfs },
+ { "reiserfs", 64, 0x34, 9, "ReIsEr2Fs", probe_reiserfs },
+ { "reiserfs", 64, 0x34, 9, "ReIsEr3Fs", probe_reiserfs },
+ { "reiserfs", 64, 0x34, 8, "ReIsErFs", probe_reiserfs },
+ { "reiserfs", 8, 20, 8, "ReIsErFs", probe_reiserfs },
+ { "reiser4", 64, 0, 7, "ReIsEr4", probe_reiserfs4 },
+ { "gfs2", 64, 0, 4, "\x01\x16\x19\x70", probe_gfs2 },
+ { "gfs", 64, 0, 4, "\x01\x16\x19\x70", probe_gfs },
+ { "vfat", 0, 0x52, 5, "MSWIN", probe_fat },
+ { "vfat", 0, 0x52, 8, "FAT32 ", probe_fat },
+ { "vfat", 0, 0x36, 5, "MSDOS", probe_fat },
+ { "vfat", 0, 0x36, 8, "FAT16 ", probe_fat },
+ { "vfat", 0, 0x36, 8, "FAT12 ", probe_fat },
+ { "vfat", 0, 0, 1, "\353", probe_fat_nomagic },
+ { "vfat", 0, 0, 1, "\351", probe_fat_nomagic },
+ { "vfat", 0, 0x1fe, 2, "\125\252", probe_fat_nomagic },
+ { "minix", 1, 0x10, 2, "\177\023", 0 },
+ { "minix", 1, 0x10, 2, "\217\023", 0 },
+ { "minix", 1, 0x10, 2, "\150\044", 0 },
+ { "minix", 1, 0x10, 2, "\170\044", 0 },
+ { "vxfs", 1, 0, 4, "\365\374\001\245", 0 },
+ { "xfs", 0, 0, 4, "XFSB", probe_xfs },
+ { "romfs", 0, 0, 8, "-rom1fs-", probe_romfs },
+ { "bfs", 0, 0, 4, "\316\372\173\033", 0 },
+ { "cramfs", 0, 0, 4, "E=\315\050", probe_cramfs },
+ { "qnx4", 0, 4, 6, "QNX4FS", 0 },
+ { "udf", 32, 1, 5, "BEA01", probe_udf },
+ { "udf", 32, 1, 5, "BOOT2", probe_udf },
+ { "udf", 32, 1, 5, "CD001", probe_udf },
+ { "udf", 32, 1, 5, "CDW02", probe_udf },
+ { "udf", 32, 1, 5, "NSR02", probe_udf },
+ { "udf", 32, 1, 5, "NSR03", probe_udf },
+ { "udf", 32, 1, 5, "TEA01", probe_udf },
+ { "iso9660", 32, 1, 5, "CD001", probe_iso9660 },
+ { "iso9660", 32, 9, 5, "CDROM", probe_iso9660 },
+ { "jfs", 32, 0, 4, "JFS1", probe_jfs },
+ { "zfs", 8, 0, 8, "\0\0\x02\xf5\xb0\x07\xb1\x0c", probe_zfs },
+ { "zfs", 8, 0, 8, "\x0c\xb1\x07\xb0\xf5\x02\0\0", probe_zfs },
+ { "zfs", 264, 0, 8, "\0\0\x02\xf5\xb0\x07\xb1\x0c", probe_zfs },
+ { "zfs", 264, 0, 8, "\x0c\xb1\x07\xb0\xf5\x02\0\0", probe_zfs },
+ { "hfsplus", 1, 0, 2, "BD", probe_hfsplus },
+ { "hfsplus", 1, 0, 2, "H+", probe_hfsplus },
+ { "hfsplus", 1, 0, 2, "HX", probe_hfsplus },
+ { "hfs", 1, 0, 2, "BD", probe_hfs },
+ { "ufs", 8, 0x55c, 4, "T\031\001\000", 0 },
+ { "hpfs", 8, 0, 4, "I\350\225\371", 0 },
+ { "sysv", 0, 0x3f8, 4, "\020~\030\375", 0 },
+ { "swap", 0, 0xff6, 10, "SWAP-SPACE", probe_swap0 },
+ { "swap", 0, 0xff6, 10, "SWAPSPACE2", probe_swap1 },
+ { "swsuspend", 0, 0xff6, 9, "S1SUSPEND", probe_swap1 },
+ { "swsuspend", 0, 0xff6, 9, "S2SUSPEND", probe_swap1 },
+ { "swap", 0, 0x1ff6, 10, "SWAP-SPACE", probe_swap0 },
+ { "swap", 0, 0x1ff6, 10, "SWAPSPACE2", probe_swap1 },
+ { "swsuspend", 0, 0x1ff6, 9, "S1SUSPEND", probe_swap1 },
+ { "swsuspend", 0, 0x1ff6, 9, "S2SUSPEND", probe_swap1 },
+ { "swap", 0, 0x3ff6, 10, "SWAP-SPACE", probe_swap0 },
+ { "swap", 0, 0x3ff6, 10, "SWAPSPACE2", probe_swap1 },
+ { "swsuspend", 0, 0x3ff6, 9, "S1SUSPEND", probe_swap1 },
+ { "swsuspend", 0, 0x3ff6, 9, "S2SUSPEND", probe_swap1 },
+ { "swap", 0, 0x7ff6, 10, "SWAP-SPACE", probe_swap0 },
+ { "swap", 0, 0x7ff6, 10, "SWAPSPACE2", probe_swap1 },
+ { "swsuspend", 0, 0x7ff6, 9, "S1SUSPEND", probe_swap1 },
+ { "swsuspend", 0, 0x7ff6, 9, "S2SUSPEND", probe_swap1 },
+ { "swap", 0, 0xfff6, 10, "SWAP-SPACE", probe_swap0 },
+ { "swap", 0, 0xfff6, 10, "SWAPSPACE2", probe_swap1 },
+ { "swsuspend", 0, 0xfff6, 9, "S1SUSPEND", probe_swap1 },
+ { "swsuspend", 0, 0xfff6, 9, "S2SUSPEND", probe_swap1 },
+ { "ocfs", 0, 8, 9, "OracleCFS", probe_ocfs },
+ { "ocfs2", 1, 0, 6, "OCFSV2", probe_ocfs2 },
+ { "ocfs2", 2, 0, 6, "OCFSV2", probe_ocfs2 },
+ { "ocfs2", 4, 0, 6, "OCFSV2", probe_ocfs2 },
+ { "ocfs2", 8, 0, 6, "OCFSV2", probe_ocfs2 },
+ { "crypt_LUKS", 0, 0, 6, "LUKS\xba\xbe", probe_luks },
+ { "squashfs", 0, 0, 4, "sqsh", 0 },
+ { "squashfs", 0, 0, 4, "hsqs", 0 },
+ { "lvm2pv", 0, 0x218, 8, "LVM2 001", probe_lvm2 },
+ { "lvm2pv", 0, 0x018, 8, "LVM2 001", probe_lvm2 },
+ { "lvm2pv", 1, 0x018, 8, "LVM2 001", probe_lvm2 },
+ { "lvm2pv", 1, 0x218, 8, "LVM2 001", probe_lvm2 },
+ { NULL, 0, 0, 0, NULL, NULL }
+};
+
+/*
+ * Verify that the data in dev is consistent with what is on the actual
+ * block device (using the devname field only). Normally this will be
+ * called when finding items in the cache, but for long running processes
+ * is also desirable to revalidate an item before use.
+ *
+ * If we are unable to revalidate the data, we return the old data and
+ * do not set the BLKID_BID_FL_VERIFIED flag on it.
+ */
+blkid_dev blkid_verify(blkid_cache cache, blkid_dev dev)
+{
+ struct blkid_magic *id;
+ struct blkid_probe probe;
+ blkid_tag_iterate iter;
+ unsigned char *buf;
+ const char *type, *value;
+ struct stat st;
+ time_t diff, now;
+ int idx;
+
+ if (!dev)
+ return NULL;
+
+ now = time(0);
+ diff = now - dev->bid_time;
+
+ if (stat(dev->bid_name, &st) < 0) {
+ DBG(DEBUG_PROBE,
+ printf("blkid_verify: error %s (%d) while "
+ "trying to stat %s\n", strerror(errno), errno,
+ dev->bid_name));
+ open_err:
+ if ((errno == EPERM) || (errno == EACCES) || (errno == ENOENT)) {
+ /* We don't have read permission, just return cache data. */
+ DBG(DEBUG_PROBE, printf("returning unverified data for %s\n",
+ dev->bid_name));
+ return dev;
+ }
+ blkid_free_dev(dev);
+ return NULL;
+ }
+
+ if ((now >= dev->bid_time) &&
+ (st.st_mtime <= dev->bid_time) &&
+ ((diff < BLKID_PROBE_MIN) ||
+ (dev->bid_flags & BLKID_BID_FL_VERIFIED &&
+ diff < BLKID_PROBE_INTERVAL)))
+ return dev;
+
+ DBG(DEBUG_PROBE,
+ printf("need to revalidate %s (cache time %lu, stat time %lu,\n\t"
+ "time since last check %lu)\n",
+ dev->bid_name, (unsigned long)dev->bid_time,
+ (unsigned long)st.st_mtime, (unsigned long)diff));
+
+ if ((probe.fd = open(dev->bid_name, O_RDONLY)) < 0) {
+ DBG(DEBUG_PROBE, printf("blkid_verify: error %s (%d) while "
+ "opening %s\n", strerror(errno), errno,
+ dev->bid_name));
+ goto open_err;
+ }
+
+ probe.cache = cache;
+ probe.dev = dev;
+ probe.sbbuf = 0;
+ probe.buf = 0;
+ probe.buf_max = 0;
+
+ /*
+ * Iterate over the type array. If we already know the type,
+ * then try that first. If it doesn't work, then blow away
+ * the type information, and try again.
+ *
+ */
+try_again:
+ type = 0;
+ if (!dev->bid_type || !strcmp(dev->bid_type, "mdraid")) {
+ uuid_t uuid;
+
+ if (check_mdraid(probe.fd, uuid) == 0) {
+ set_uuid(dev, uuid, 0);
+ type = "mdraid";
+ goto found_type;
+ }
+ }
+ for (id = type_array; id->bim_type; id++) {
+ if (dev->bid_type &&
+ strcmp(id->bim_type, dev->bid_type))
+ continue;
+
+ idx = id->bim_kboff + (id->bim_sboff >> 10);
+ buf = get_buffer(&probe, idx << 10, 1024);
+ if (!buf)
+ continue;
+
+ if (memcmp(id->bim_magic, buf + (id->bim_sboff & 0x3ff),
+ id->bim_len))
+ continue;
+
+ if ((id->bim_probe == NULL) ||
+ (id->bim_probe(&probe, id, buf) == 0)) {
+ type = id->bim_type;
+ goto found_type;
+ }
+ }
+
+ if (!id->bim_type && dev->bid_type) {
+ /*
+ * Zap the device filesystem information and try again
+ */
+ DBG(DEBUG_PROBE,
+ printf("previous fs type %s not valid, "
+ "trying full probe\n", dev->bid_type));
+ iter = blkid_tag_iterate_begin(dev);
+ while (blkid_tag_next(iter, &type, &value) == 0)
+ blkid_set_tag(dev, type, 0, 0);
+ blkid_tag_iterate_end(iter);
+ goto try_again;
+ }
+
+ if (!dev->bid_type) {
+ blkid_free_dev(dev);
+ dev = 0;
+ goto found_type;
+ }
+
+found_type:
+ if (dev && type) {
+ dev->bid_devno = st.st_rdev;
+ dev->bid_time = time(0);
+ dev->bid_flags |= BLKID_BID_FL_VERIFIED;
+ cache->bic_flags |= BLKID_BIC_FL_CHANGED;
+
+ blkid_set_tag(dev, "TYPE", type, 0);
+
+ DBG(DEBUG_PROBE, printf("%s: devno 0x%04llx, type %s\n",
+ dev->bid_name, (long long)st.st_rdev, type));
+ }
+
+ if (probe.sbbuf)
+ free(probe.sbbuf);
+ if (probe.buf)
+ free(probe.buf);
+ if (probe.fd >= 0)
+ close(probe.fd);
+
+ return dev;
+}
+
+int blkid_known_fstype(const char *fstype)
+{
+ struct blkid_magic *id;
+
+ for (id = type_array; id->bim_type; id++) {
+ if (strcmp(fstype, id->bim_type) == 0)
+ return 1;
+ }
+ return 0;
+}
+
+#ifdef TEST_PROGRAM
+int main(int argc, char **argv)
+{
+ blkid_dev dev;
+ blkid_cache cache;
+ int ret;
+
+ if (argc != 2) {
+ fprintf(stderr, "Usage: %s device\n"
+ "Probe a single device to determine type\n", argv[0]);
+ exit(1);
+ }
+ if ((ret = blkid_get_cache(&cache, "/dev/null")) != 0) {
+ fprintf(stderr, "%s: error creating cache (%d)\n",
+ argv[0], ret);
+ exit(1);
+ }
+ dev = blkid_get_dev(cache, argv[1], BLKID_DEV_NORMAL);
+ if (!dev) {
+ printf("%s: %s has an unsupported type\n", argv[0], argv[1]);
+ return (1);
+ }
+ printf("TYPE='%s'\n", dev->bid_type ? dev->bid_type : "(null)");
+ if (dev->bid_label)
+ printf("LABEL='%s'\n", dev->bid_label);
+ if (dev->bid_uuid)
+ printf("UUID='%s'\n", dev->bid_uuid);
+
+ blkid_free_dev(dev);
+ return (0);
+}
+#endif
--- /dev/null
+/*
+ * probe.h - constants and on-disk structures for extracting device data
+ *
+ * Copyright (C) 1999 by Andries Brouwer
+ * Copyright (C) 1999, 2000, 2003 by Theodore Ts'o
+ * Copyright (C) 2001 by Andreas Dilger
+ *
+ * %Begin-Header%
+ * This file may be redistributed under the terms of the
+ * GNU Lesser General Public License.
+ * %End-Header%
+ */
+
+#ifndef _BLKID_PROBE_H
+#define _BLKID_PROBE_H
+
+#include <blkid/blkid_types.h>
+
+struct blkid_magic;
+
+#define SB_BUFFER_SIZE 0x11000
+
+struct blkid_probe {
+ int fd;
+ blkid_cache cache;
+ blkid_dev dev;
+ unsigned char *sbbuf;
+ size_t sb_valid;
+ unsigned char *buf;
+ size_t buf_max;
+};
+
+typedef int (*blkid_probe_t)(struct blkid_probe *probe,
+ struct blkid_magic *id, unsigned char *buf);
+
+struct blkid_magic {
+ const char *bim_type; /* type name for this magic */
+ long bim_kboff; /* kilobyte offset of superblock */
+ unsigned bim_sboff; /* byte offset within superblock */
+ unsigned bim_len; /* length of magic */
+ const char *bim_magic; /* magic string */
+ blkid_probe_t bim_probe; /* probe function */
+};
+
+/*
+ * Structures for each of the content types we want to extract information
+ * from. We do not necessarily need the magic field here, because we have
+ * already identified the content type before we get this far. It may still
+ * be useful if there are probe functions which handle multiple content types.
+ */
+struct ext2_super_block {
+ __u32 s_inodes_count;
+ __u32 s_blocks_count;
+ __u32 s_r_blocks_count;
+ __u32 s_free_blocks_count;
+ __u32 s_free_inodes_count;
+ __u32 s_first_data_block;
+ __u32 s_log_block_size;
+ __u32 s_dummy3[7];
+ unsigned char s_magic[2];
+ __u16 s_state;
+ __u32 s_dummy5[8];
+ __u32 s_feature_compat;
+ __u32 s_feature_incompat;
+ __u32 s_feature_ro_compat;
+ unsigned char s_uuid[16];
+ char s_volume_name[16];
+ char s_last_mounted[64];
+ __u32 s_algorithm_usage_bitmap;
+ __u8 s_prealloc_blocks;
+ __u8 s_prealloc_dir_blocks;
+ __u16 s_reserved_gdt_blocks;
+ __u8 s_journal_uuid[16];
+ __u32 s_journal_inum;
+ __u32 s_journal_dev;
+ __u32 s_last_orphan;
+ __u32 s_hash_seed[4];
+ __u8 s_def_hash_version;
+ __u8 s_jnl_backup_type;
+ __u16 s_reserved_word_pad;
+ __u32 s_default_mount_opts;
+ __u32 s_first_meta_bg;
+ __u32 s_mkfs_time;
+ __u32 s_jnl_blocks[17];
+ __u32 s_blocks_count_hi;
+ __u32 s_r_blocks_count_hi;
+ __u32 s_free_blocks_hi;
+ __u16 s_min_extra_isize;
+ __u16 s_want_extra_isize;
+ __u32 s_flags;
+ __u16 s_raid_stride;
+ __u16 s_mmp_interval;
+ __u64 s_mmp_block;
+ __u32 s_raid_stripe_width;
+ __u32 s_reserved[163];
+};
+
+/* for s_flags */
+#define EXT2_FLAGS_TEST_FILESYS 0x0004
+
+/* for s_feature_compat */
+#define EXT3_FEATURE_COMPAT_HAS_JOURNAL 0x0004
+
+/* for s_feature_ro_compat */
+#define EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER 0x0001
+#define EXT2_FEATURE_RO_COMPAT_LARGE_FILE 0x0002
+#define EXT2_FEATURE_RO_COMPAT_BTREE_DIR 0x0004
+#define EXT4_FEATURE_RO_COMPAT_HUGE_FILE 0x0008
+#define EXT4_FEATURE_RO_COMPAT_GDT_CSUM 0x0010
+#define EXT4_FEATURE_RO_COMPAT_DIR_NLINK 0x0020
+#define EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE 0x0040
+
+/* for s_feature_incompat */
+#define EXT2_FEATURE_INCOMPAT_FILETYPE 0x0002
+#define EXT3_FEATURE_INCOMPAT_RECOVER 0x0004
+#define EXT3_FEATURE_INCOMPAT_JOURNAL_DEV 0x0008
+#define EXT2_FEATURE_INCOMPAT_META_BG 0x0010
+#define EXT4_FEATURE_INCOMPAT_EXTENTS 0x0040 /* extents support */
+#define EXT4_FEATURE_INCOMPAT_64BIT 0x0080
+#define EXT4_FEATURE_INCOMPAT_MMP 0x0100
+#define EXT4_FEATURE_INCOMPAT_FLEX_BG 0x0200
+
+#define EXT2_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER| \
+ EXT2_FEATURE_RO_COMPAT_LARGE_FILE| \
+ EXT2_FEATURE_RO_COMPAT_BTREE_DIR)
+#define EXT2_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE| \
+ EXT2_FEATURE_INCOMPAT_META_BG)
+#define EXT2_FEATURE_INCOMPAT_UNSUPPORTED ~EXT2_FEATURE_INCOMPAT_SUPP
+#define EXT2_FEATURE_RO_COMPAT_UNSUPPORTED ~EXT2_FEATURE_RO_COMPAT_SUPP
+
+#define EXT3_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER| \
+ EXT2_FEATURE_RO_COMPAT_LARGE_FILE| \
+ EXT2_FEATURE_RO_COMPAT_BTREE_DIR)
+#define EXT3_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE| \
+ EXT3_FEATURE_INCOMPAT_RECOVER| \
+ EXT2_FEATURE_INCOMPAT_META_BG)
+#define EXT3_FEATURE_INCOMPAT_UNSUPPORTED ~EXT3_FEATURE_INCOMPAT_SUPP
+#define EXT3_FEATURE_RO_COMPAT_UNSUPPORTED ~EXT3_FEATURE_RO_COMPAT_SUPP
+
+
+struct xfs_super_block {
+ unsigned char xs_magic[4];
+ __u32 xs_blocksize;
+ __u64 xs_dblocks;
+ __u64 xs_rblocks;
+ __u32 xs_dummy1[2];
+ unsigned char xs_uuid[16];
+ __u32 xs_dummy2[15];
+ char xs_fname[12];
+ __u32 xs_dummy3[2];
+ __u64 xs_icount;
+ __u64 xs_ifree;
+ __u64 xs_fdblocks;
+};
+
+struct reiserfs_super_block {
+ __u32 rs_blocks_count;
+ __u32 rs_free_blocks;
+ __u32 rs_root_block;
+ __u32 rs_journal_block;
+ __u32 rs_journal_dev;
+ __u32 rs_orig_journal_size;
+ __u32 rs_dummy2[5];
+ __u16 rs_blocksize;
+ __u16 rs_dummy3[3];
+ unsigned char rs_magic[12];
+ __u32 rs_dummy4[5];
+ unsigned char rs_uuid[16];
+ char rs_label[16];
+};
+
+struct reiser4_super_block {
+ unsigned char rs4_magic[16];
+ __u16 rs4_dummy[2];
+ unsigned char rs4_uuid[16];
+ unsigned char rs4_label[16];
+ __u64 rs4_dummy2;
+};
+
+struct jfs_super_block {
+ unsigned char js_magic[4];
+ __u32 js_version;
+ __u64 js_size;
+ __u32 js_bsize; /* 4: aggregate block size in bytes */
+ __u16 js_l2bsize; /* 2: log2 of s_bsize */
+ __u16 js_l2bfactor; /* 2: log2(s_bsize/hardware block size) */
+ __u32 js_pbsize; /* 4: hardware/LVM block size in bytes */
+ __u16 js_l2pbsize; /* 2: log2 of s_pbsize */
+ __u16 js_pad; /* 2: padding necessary for alignment */
+ __u32 js_dummy2[26];
+ unsigned char js_uuid[16];
+ unsigned char js_label[16];
+ unsigned char js_loguuid[16];
+};
+
+struct romfs_super_block {
+ unsigned char ros_magic[8];
+ __u32 ros_dummy1[2];
+ unsigned char ros_volume[16];
+};
+
+struct cramfs_super_block {
+ __u8 magic[4];
+ __u32 size;
+ __u32 flags;
+ __u32 future;
+ __u8 signature[16];
+ struct cramfs_info {
+ __u32 crc;
+ __u32 edition;
+ __u32 blocks;
+ __u32 files;
+ } info;
+ __u8 name[16];
+};
+
+struct swap_id_block {
+/* unsigned char sws_boot[1024]; */
+ __u32 sws_version;
+ __u32 sws_lastpage;
+ __u32 sws_nrbad;
+ unsigned char sws_uuid[16];
+ char sws_volume[16];
+ unsigned char sws_pad[117];
+ __u32 sws_badpg;
+};
+
+/* Yucky misaligned values */
+struct vfat_super_block {
+/* 00*/ unsigned char vs_ignored[3];
+/* 03*/ unsigned char vs_sysid[8];
+/* 0b*/ unsigned char vs_sector_size[2];
+/* 0d*/ __u8 vs_cluster_size;
+/* 0e*/ __u16 vs_reserved;
+/* 10*/ __u8 vs_fats;
+/* 11*/ unsigned char vs_dir_entries[2];
+/* 13*/ unsigned char vs_sectors[2];
+/* 15*/ unsigned char vs_media;
+/* 16*/ __u16 vs_fat_length;
+/* 18*/ __u16 vs_secs_track;
+/* 1a*/ __u16 vs_heads;
+/* 1c*/ __u32 vs_hidden;
+/* 20*/ __u32 vs_total_sect;
+/* 24*/ __u32 vs_fat32_length;
+/* 28*/ __u16 vs_flags;
+/* 2a*/ __u8 vs_version[2];
+/* 2c*/ __u32 vs_root_cluster;
+/* 30*/ __u16 vs_insfo_sector;
+/* 32*/ __u16 vs_backup_boot;
+/* 34*/ __u16 vs_reserved2[6];
+/* 40*/ unsigned char vs_unknown[3];
+/* 43*/ unsigned char vs_serno[4];
+/* 47*/ unsigned char vs_label[11];
+/* 52*/ unsigned char vs_magic[8];
+/* 5a*/ unsigned char vs_dummy2[164];
+/*1fe*/ unsigned char vs_pmagic[2];
+};
+
+/* Yucky misaligned values */
+struct msdos_super_block {
+/* 00*/ unsigned char ms_ignored[3];
+/* 03*/ unsigned char ms_sysid[8];
+/* 0b*/ unsigned char ms_sector_size[2];
+/* 0d*/ __u8 ms_cluster_size;
+/* 0e*/ __u16 ms_reserved;
+/* 10*/ __u8 ms_fats;
+/* 11*/ unsigned char ms_dir_entries[2];
+/* 13*/ unsigned char ms_sectors[2];
+/* 15*/ unsigned char ms_media;
+/* 16*/ __u16 ms_fat_length;
+/* 18*/ __u16 ms_secs_track;
+/* 1a*/ __u16 ms_heads;
+/* 1c*/ __u32 ms_hidden;
+/* 20*/ __u32 ms_total_sect;
+/* 24*/ unsigned char ms_unknown[3];
+/* 27*/ unsigned char ms_serno[4];
+/* 2b*/ unsigned char ms_label[11];
+/* 36*/ unsigned char ms_magic[8];
+/* 3d*/ unsigned char ms_dummy2[192];
+/*1fe*/ unsigned char ms_pmagic[2];
+};
+
+struct vfat_dir_entry {
+ __u8 name[11];
+ __u8 attr;
+ __u16 time_creat;
+ __u16 date_creat;
+ __u16 time_acc;
+ __u16 date_acc;
+ __u16 cluster_high;
+ __u16 time_write;
+ __u16 date_write;
+ __u16 cluster_low;
+ __u32 size;
+};
+
+/* maximum number of clusters */
+#define FAT12_MAX 0xFF4
+#define FAT16_MAX 0xFFF4
+#define FAT32_MAX 0x0FFFFFF6
+
+struct minix_super_block {
+ __u16 ms_ninodes;
+ __u16 ms_nzones;
+ __u16 ms_imap_blocks;
+ __u16 ms_zmap_blocks;
+ __u16 ms_firstdatazone;
+ __u16 ms_log_zone_size;
+ __u32 ms_max_size;
+ unsigned char ms_magic[2];
+ __u16 ms_state;
+ __u32 ms_zones;
+};
+
+struct mdp_superblock_s {
+ __u32 md_magic;
+ __u32 major_version;
+ __u32 minor_version;
+ __u32 patch_version;
+ __u32 gvalid_words;
+ __u32 set_uuid0;
+ __u32 ctime;
+ __u32 level;
+ __u32 size;
+ __u32 nr_disks;
+ __u32 raid_disks;
+ __u32 md_minor;
+ __u32 not_persistent;
+ __u32 set_uuid1;
+ __u32 set_uuid2;
+ __u32 set_uuid3;
+};
+
+struct hfs_super_block {
+ char h_magic[2];
+ char h_dummy[18];
+ __u32 h_blksize;
+};
+
+struct ocfs_volume_header {
+ unsigned char minor_version[4];
+ unsigned char major_version[4];
+ unsigned char signature[128];
+ char mount[128];
+ unsigned char mount_len[2];
+};
+
+struct ocfs_volume_label {
+ unsigned char disk_lock[48];
+ char label[64];
+ unsigned char label_len[2];
+ unsigned char vol_id[16];
+ unsigned char vol_id_len[2];
+};
+
+#define ocfsmajor(o) ((__u32)o.major_version[0] \
+ + (((__u32) o.major_version[1]) << 8) \
+ + (((__u32) o.major_version[2]) << 16) \
+ + (((__u32) o.major_version[3]) << 24))
+#define ocfslabellen(o) ((__u32)o.label_len[0] + (((__u32) o.label_len[1]) << 8))
+#define ocfsmountlen(o) ((__u32)o.mount_len[0] + (((__u32) o.mount_len[1])<<8))
+
+#define OCFS_MAGIC "OracleCFS"
+
+struct ocfs2_super_block {
+ unsigned char signature[8];
+ unsigned char s_dummy1[184];
+ unsigned char s_dummy2[80];
+ char s_label[64];
+ unsigned char s_uuid[16];
+};
+
+#define OCFS2_MIN_BLOCKSIZE 512
+#define OCFS2_MAX_BLOCKSIZE 4096
+
+#define OCFS2_SUPER_BLOCK_BLKNO 2
+
+#define OCFS2_SUPER_BLOCK_SIGNATURE "OCFSV2"
+
+struct oracle_asm_disk_label {
+ char dummy[32];
+ char dl_tag[8];
+ char dl_id[24];
+};
+
+#define ORACLE_ASM_DISK_LABEL_MARKED "ORCLDISK"
+#define ORACLE_ASM_DISK_LABEL_OFFSET 32
+
+struct iso_volume_descriptor {
+ unsigned char vd_type;
+ unsigned char vd_id[5];
+ unsigned char vd_version;
+ unsigned char flags;
+ unsigned char system_id[32];
+ unsigned char volume_id[32];
+ unsigned char unused[8];
+ unsigned char space_size[8];
+ unsigned char escape_sequences[8];
+};
+
+/* Common gfs/gfs2 constants: */
+#define GFS_MAGIC 0x01161970
+#define GFS_DEFAULT_BSIZE 4096
+#define GFS_SUPERBLOCK_OFFSET (0x10 * GFS_DEFAULT_BSIZE)
+#define GFS_METATYPE_SB 1
+#define GFS_FORMAT_SB 100
+#define GFS_LOCKNAME_LEN 64
+
+/* gfs1 constants: */
+#define GFS_FORMAT_FS 1309
+#define GFS_FORMAT_MULTI 1401
+/* gfs2 constants: */
+#define GFS2_FORMAT_FS 1801
+#define GFS2_FORMAT_MULTI 1900
+
+struct gfs2_meta_header {
+ __u32 mh_magic;
+ __u32 mh_type;
+ __u64 __pad0; /* Was generation number in gfs1 */
+ __u32 mh_format;
+ __u32 __pad1; /* Was incarnation number in gfs1 */
+};
+
+struct gfs2_inum {
+ __u64 no_formal_ino;
+ __u64 no_addr;
+};
+
+struct gfs2_sb {
+ struct gfs2_meta_header sb_header;
+
+ __u32 sb_fs_format;
+ __u32 sb_multihost_format;
+ __u32 __pad0; /* Was superblock flags in gfs1 */
+
+ __u32 sb_bsize;
+ __u32 sb_bsize_shift;
+ __u32 __pad1; /* Was journal segment size in gfs1 */
+
+ struct gfs2_inum sb_master_dir; /* Was jindex dinode in gfs1 */
+ struct gfs2_inum __pad2; /* Was rindex dinode in gfs1 */
+ struct gfs2_inum sb_root_dir;
+
+ char sb_lockproto[GFS_LOCKNAME_LEN];
+ char sb_locktable[GFS_LOCKNAME_LEN];
+ /* In gfs1, quota and license dinodes followed */
+};
+
+struct ntfs_super_block {
+ __u8 jump[3];
+ __u8 oem_id[8];
+ __u8 bios_parameter_block[25];
+ __u16 unused[2];
+ __u64 number_of_sectors;
+ __u64 mft_cluster_location;
+ __u64 mft_mirror_cluster_location;
+ __s8 cluster_per_mft_record;
+ __u8 reserved1[3];
+ __s8 cluster_per_index_record;
+ __u8 reserved2[3];
+ __u64 volume_serial;
+ __u16 checksum;
+};
+
+struct master_file_table_record {
+ __u32 magic;
+ __u16 usa_ofs;
+ __u16 usa_count;
+ __u64 lsn;
+ __u16 sequence_number;
+ __u16 link_count;
+ __u16 attrs_offset;
+ __u16 flags;
+ __u32 bytes_in_use;
+ __u32 bytes_allocated;
+} __attribute__((__packed__));
+
+struct file_attribute {
+ __u32 type;
+ __u32 len;
+ __u8 non_resident;
+ __u8 name_len;
+ __u16 name_offset;
+ __u16 flags;
+ __u16 instance;
+ __u32 value_len;
+ __u16 value_offset;
+} __attribute__((__packed__));
+
+#define MFT_RECORD_VOLUME 3
+#define MFT_RECORD_ATTR_VOLUME_NAME 0x60
+#define MFT_RECORD_ATTR_VOLUME_INFO 0x70
+#define MFT_RECORD_ATTR_OBJECT_ID 0x40
+#define MFT_RECORD_ATTR_END 0xffffffffu
+
+/* HFS / HFS+ */
+struct hfs_finder_info {
+ __u32 boot_folder;
+ __u32 start_app;
+ __u32 open_folder;
+ __u32 os9_folder;
+ __u32 reserved;
+ __u32 osx_folder;
+ __u8 id[8];
+} __attribute__((packed));
+
+struct hfs_mdb {
+ __u8 signature[2];
+ __u32 cr_date;
+ __u32 ls_Mod;
+ __u16 atrb;
+ __u16 nm_fls;
+ __u16 vbm_st;
+ __u16 alloc_ptr;
+ __u16 nm_al_blks;
+ __u32 al_blk_size;
+ __u32 clp_size;
+ __u16 al_bl_st;
+ __u32 nxt_cnid;
+ __u16 free_bks;
+ __u8 label_len;
+ __u8 label[27];
+ __u32 vol_bkup;
+ __u16 vol_seq_num;
+ __u32 wr_cnt;
+ __u32 xt_clump_size;
+ __u32 ct_clump_size;
+ __u16 num_root_dirs;
+ __u32 file_count;
+ __u32 dir_count;
+ struct hfs_finder_info finder_info;
+ __u8 embed_sig[2];
+ __u16 embed_startblock;
+ __u16 embed_blockcount;
+} __attribute__((packed));
+
+
+#define HFS_NODE_LEAF 0xff
+#define HFSPLUS_POR_CNID 1
+
+struct hfsplus_bnode_descriptor {
+ __u32 next;
+ __u32 prev;
+ __u8 type;
+ __u8 height;
+ __u16 num_recs;
+ __u16 reserved;
+} __attribute__((packed));
+
+struct hfsplus_bheader_record {
+ __u16 depth;
+ __u32 root;
+ __u32 leaf_count;
+ __u32 leaf_head;
+ __u32 leaf_tail;
+ __u16 node_size;
+} __attribute__((packed));
+
+struct hfsplus_catalog_key {
+ __u16 key_len;
+ __u32 parent_id;
+ __u16 unicode_len;
+ __u8 unicode[255 * 2];
+} __attribute__((packed));
+
+struct hfsplus_extent {
+ __u32 start_block;
+ __u32 block_count;
+} __attribute__((packed));
+
+#define HFSPLUS_EXTENT_COUNT 8
+struct hfsplus_fork {
+ __u64 total_size;
+ __u32 clump_size;
+ __u32 total_blocks;
+ struct hfsplus_extent extents[HFSPLUS_EXTENT_COUNT];
+} __attribute__((packed));
+
+struct hfsplus_vol_header {
+ __u8 signature[2];
+ __u16 version;
+ __u32 attributes;
+ __u32 last_mount_vers;
+ __u32 reserved;
+ __u32 create_date;
+ __u32 modify_date;
+ __u32 backup_date;
+ __u32 checked_date;
+ __u32 file_count;
+ __u32 folder_count;
+ __u32 blocksize;
+ __u32 total_blocks;
+ __u32 free_blocks;
+ __u32 next_alloc;
+ __u32 rsrc_clump_sz;
+ __u32 data_clump_sz;
+ __u32 next_cnid;
+ __u32 write_count;
+ __u64 encodings_bmp;
+ struct hfs_finder_info finder_info;
+ struct hfsplus_fork alloc_file;
+ struct hfsplus_fork ext_file;
+ struct hfsplus_fork cat_file;
+ struct hfsplus_fork attr_file;
+ struct hfsplus_fork start_file;
+} __attribute__((packed));
+
+
+/* this is lvm's label_header & pv_header combined. */
+
+#define LVM2_ID_LEN 32
+
+struct lvm2_pv_label_header {
+ /* label_header */
+ __u8 id[8]; /* LABELONE */
+ __u64 sector_xl; /* Sector number of this label */
+ __u32 crc_xl; /* From next field to end of sector */
+ __u32 offset_xl; /* Offset from start of struct to contents */
+ __u8 type[8]; /* LVM2 001 */
+ /* pv_header */
+ __u8 pv_uuid[LVM2_ID_LEN];
+} __attribute__ ((packed));
+
+/*
+ * Byte swap functions
+ */
+#ifdef __GNUC__
+#define _INLINE_ static __inline__
+#else /* For Watcom C */
+#define _INLINE_ static inline
+#endif
+
+static __u16 blkid_swab16(__u16 val);
+static __u32 blkid_swab32(__u32 val);
+static __u64 blkid_swab64(__u64 val);
+
+#if ((defined __GNUC__) && \
+ (defined(__i386__) || defined(__i486__) || defined(__i586__)))
+
+#define _BLKID_HAVE_ASM_BITOPS_
+
+_INLINE_ __u32 blkid_swab32(__u32 val)
+{
+#ifdef EXT2FS_REQUIRE_486
+ __asm__("bswap %0" : "=r" (val) : "0" (val));
+#else
+ __asm__("xchgb %b0,%h0\n\t" /* swap lower bytes */
+ "rorl $16,%0\n\t" /* swap words */
+ "xchgb %b0,%h0" /* swap higher bytes */
+ :"=q" (val)
+ : "0" (val));
+#endif
+ return val;
+}
+
+_INLINE_ __u16 blkid_swab16(__u16 val)
+{
+ __asm__("xchgb %b0,%h0" /* swap bytes */ \
+ : "=q" (val) \
+ : "0" (val)); \
+ return val;
+}
+
+_INLINE_ __u64 blkid_swab64(__u64 val)
+{
+ return (blkid_swab32(val >> 32) |
+ (((__u64) blkid_swab32(val & 0xFFFFFFFFUL)) << 32));
+}
+#endif
+
+#if !defined(_BLKID_HAVE_ASM_BITOPS_)
+
+_INLINE_ __u16 blkid_swab16(__u16 val)
+{
+ return (val >> 8) | (val << 8);
+}
+
+_INLINE_ __u32 blkid_swab32(__u32 val)
+{
+ return ((val>>24) | ((val>>8)&0xFF00) |
+ ((val<<8)&0xFF0000) | (val<<24));
+}
+
+_INLINE_ __u64 blkid_swab64(__u64 val)
+{
+ return (blkid_swab32(val >> 32) |
+ (((__u64) blkid_swab32(val & 0xFFFFFFFFUL)) << 32));
+}
+#endif
+
+
+
+#ifdef WORDS_BIGENDIAN
+#define blkid_le16(x) blkid_swab16(x)
+#define blkid_le32(x) blkid_swab32(x)
+#define blkid_le64(x) blkid_swab64(x)
+#define blkid_be16(x) (x)
+#define blkid_be32(x) (x)
+#define blkid_be64(x) (x)
+#else
+#define blkid_le16(x) (x)
+#define blkid_le32(x) (x)
+#define blkid_le64(x) (x)
+#define blkid_be16(x) blkid_swab16(x)
+#define blkid_be32(x) blkid_swab32(x)
+#define blkid_be64(x) blkid_swab64(x)
+#endif
+
+#undef _INLINE_
+
+#endif /* _BLKID_PROBE_H */
--- /dev/null
+/*
+ * read.c - read the blkid cache from disk, to avoid scanning all devices
+ *
+ * Copyright (C) 2001, 2003 Theodore Y. Ts'o
+ * Copyright (C) 2001 Andreas Dilger
+ *
+ * %Begin-Header%
+ * This file may be redistributed under the terms of the
+ * GNU Lesser General Public License.
+ * %End-Header%
+ */
+
+#define _XOPEN_SOURCE 600 /* for inclusion of strtoull */
+
+#include <stdio.h>
+#include <ctype.h>
+#include <string.h>
+#include <time.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#if HAVE_ERRNO_H
+#include <errno.h>
+#endif
+
+#include "blkidP.h"
+#include "uuid/uuid.h"
+
+#ifdef HAVE_STRTOULL
+#define STRTOULL strtoull /* defined in stdlib.h if you try hard enough */
+#else
+/* FIXME: need to support real strtoull here */
+#define STRTOULL strtoul
+#endif
+
+#if HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
+
+#ifdef TEST_PROGRAM
+#define blkid_debug_dump_dev(dev) (debug_dump_dev(dev))
+static void debug_dump_dev(blkid_dev dev);
+#endif
+
+/*
+ * File format:
+ *
+ * <device [<NAME="value"> ...]>device_name</device>
+ *
+ * The following tags are required for each entry:
+ * <ID="id"> unique (within this file) ID number of this device
+ * <TIME="time"> (ascii time_t) time this entry was last read from disk
+ * <TYPE="type"> (detected) type of filesystem/data for this partition
+ *
+ * The following tags may be present, depending on the device contents
+ * <LABEL="label"> (user supplied) label (volume name, etc)
+ * <UUID="uuid"> (generated) universally unique identifier (serial no)
+ */
+
+static char *skip_over_blank(char *cp)
+{
+ while (*cp && isspace(*cp))
+ cp++;
+ return cp;
+}
+
+static char *skip_over_word(char *cp)
+{
+ char ch;
+
+ while ((ch = *cp)) {
+ /* If we see a backslash, skip the next character */
+ if (ch == '\\') {
+ cp++;
+ if (*cp == '\0')
+ break;
+ cp++;
+ continue;
+ }
+ if (isspace(ch) || ch == '<' || ch == '>')
+ break;
+ cp++;
+ }
+ return cp;
+}
+
+static char *strip_line(char *line)
+{
+ char *p;
+
+ line = skip_over_blank(line);
+
+ p = line + strlen(line) - 1;
+
+ while (*line) {
+ if (isspace(*p))
+ *p-- = '\0';
+ else
+ break;
+ }
+
+ return line;
+}
+
+#if 0
+static char *parse_word(char **buf)
+{
+ char *word, *next;
+
+ word = *buf;
+ if (*word == '\0')
+ return NULL;
+
+ word = skip_over_blank(word);
+ next = skip_over_word(word);
+ if (*next) {
+ char *end = next - 1;
+ if (*end == '"' || *end == '\'')
+ *end = '\0';
+ *next++ = '\0';
+ }
+ *buf = next;
+
+ if (*word == '"' || *word == '\'')
+ word++;
+ return word;
+}
+#endif
+
+/*
+ * Start parsing a new line from the cache.
+ *
+ * line starts with "<device" return 1 -> continue parsing line
+ * line starts with "<foo", empty, or # return 0 -> skip line
+ * line starts with other, return -BLKID_ERR_CACHE -> error
+ */
+static int parse_start(char **cp)
+{
+ char *p;
+
+ p = strip_line(*cp);
+
+ /* Skip comment or blank lines. We can't just NUL the first '#' char,
+ * in case it is inside quotes, or escaped.
+ */
+ if (*p == '\0' || *p == '#')
+ return 0;
+
+ if (!strncmp(p, "<device", 7)) {
+ DBG(DEBUG_READ, printf("found device header: %8s\n", p));
+ p += 7;
+
+ *cp = p;
+ return 1;
+ }
+
+ if (*p == '<')
+ return 0;
+
+ return -BLKID_ERR_CACHE;
+}
+
+/* Consume the remaining XML on the line (cosmetic only) */
+static int parse_end(char **cp)
+{
+ *cp = skip_over_blank(*cp);
+
+ if (!strncmp(*cp, "</device>", 9)) {
+ DBG(DEBUG_READ, printf("found device trailer %9s\n", *cp));
+ *cp += 9;
+ return 0;
+ }
+
+ return -BLKID_ERR_CACHE;
+}
+
+/*
+ * Allocate a new device struct with device name filled in. Will handle
+ * finding the device on lines of the form:
+ * <device foo=bar>devname</device>
+ * <device>devname<foo>bar</foo></device>
+ */
+static int parse_dev(blkid_cache cache, blkid_dev *dev, char **cp)
+{
+ char *start, *tmp, *end, *name;
+ int ret;
+
+ if ((ret = parse_start(cp)) <= 0)
+ return ret;
+
+ start = tmp = strchr(*cp, '>');
+ if (!start) {
+ DBG(DEBUG_READ,
+ printf("blkid: short line parsing dev: %s\n", *cp));
+ return -BLKID_ERR_CACHE;
+ }
+ start = skip_over_blank(start + 1);
+ end = skip_over_word(start);
+
+ DBG(DEBUG_READ, printf("device should be %*s\n",
+ (int)(end - start), start));
+
+ if (**cp == '>')
+ *cp = end;
+ else
+ (*cp)++;
+
+ *tmp = '\0';
+
+ if (!(tmp = strrchr(end, '<')) || parse_end(&tmp) < 0) {
+ DBG(DEBUG_READ,
+ printf("blkid: missing </device> ending: %s\n", end));
+ } else if (tmp)
+ *tmp = '\0';
+
+ if (end - start <= 1) {
+ DBG(DEBUG_READ, printf("blkid: empty device name: %s\n", *cp));
+ return -BLKID_ERR_CACHE;
+ }
+
+ name = blkid_strndup(start, end-start);
+ if (name == NULL)
+ return -BLKID_ERR_MEM;
+
+ DBG(DEBUG_READ, printf("found dev %s\n", name));
+
+ if (!(*dev = blkid_get_dev(cache, name, BLKID_DEV_CREATE))) {
+ free(name);
+ return -BLKID_ERR_MEM;
+ }
+
+ free(name);
+ return 1;
+}
+
+/*
+ * Extract a tag of the form NAME="value" from the line.
+ */
+static int parse_token(char **name, char **value, char **cp)
+{
+ char *end;
+
+ if (!name || !value || !cp)
+ return -BLKID_ERR_PARAM;
+
+ if (!(*value = strchr(*cp, '=')))
+ return 0;
+
+ **value = '\0';
+ *name = strip_line(*cp);
+ *value = skip_over_blank(*value + 1);
+
+ if (**value == '"') {
+ end = strchr(*value + 1, '"');
+ if (!end) {
+ DBG(DEBUG_READ,
+ printf("unbalanced quotes at: %s\n", *value));
+ *cp = *value;
+ return -BLKID_ERR_CACHE;
+ }
+ (*value)++;
+ *end = '\0';
+ end++;
+ } else {
+ end = skip_over_word(*value);
+ if (*end) {
+ *end = '\0';
+ end++;
+ }
+ }
+ *cp = end;
+
+ return 1;
+}
+
+/*
+ * Extract a tag of the form <NAME>value</NAME> from the line.
+ */
+/*
+static int parse_xml(char **name, char **value, char **cp)
+{
+ char *end;
+
+ if (!name || !value || !cp)
+ return -BLKID_ERR_PARAM;
+
+ *name = strip_line(*cp);
+
+ if ((*name)[0] != '<' || (*name)[1] == '/')
+ return 0;
+
+ FIXME: finish this.
+}
+*/
+
+/*
+ * Extract a tag from the line.
+ *
+ * Return 1 if a valid tag was found.
+ * Return 0 if no tag found.
+ * Return -ve error code.
+ */
+static int parse_tag(blkid_cache cache, blkid_dev dev, char **cp)
+{
+ char *name;
+ char *value;
+ int ret;
+
+ if (!cache || !dev)
+ return -BLKID_ERR_PARAM;
+
+ if ((ret = parse_token(&name, &value, cp)) <= 0 /* &&
+ (ret = parse_xml(&name, &value, cp)) <= 0 */)
+ return ret;
+
+ /* Some tags are stored directly in the device struct */
+ if (!strcmp(name, "DEVNO"))
+ dev->bid_devno = STRTOULL(value, 0, 0);
+ else if (!strcmp(name, "PRI"))
+ dev->bid_pri = strtol(value, 0, 0);
+ else if (!strcmp(name, "TIME"))
+ dev->bid_time = STRTOULL(value, 0, 0);
+ else
+ ret = blkid_set_tag(dev, name, value, strlen(value));
+
+ DBG(DEBUG_READ, printf(" tag: %s=\"%s\"\n", name, value));
+
+ return ret < 0 ? ret : 1;
+}
+
+/*
+ * Parse a single line of data, and return a newly allocated dev struct.
+ * Add the new device to the cache struct, if one was read.
+ *
+ * Lines are of the form <device [TAG="value" ...]>/dev/foo</device>
+ *
+ * Returns -ve value on error.
+ * Returns 0 otherwise.
+ * If a valid device was read, *dev_p is non-NULL, otherwise it is NULL
+ * (e.g. comment lines, unknown XML content, etc).
+ */
+static int blkid_parse_line(blkid_cache cache, blkid_dev *dev_p, char *cp)
+{
+ blkid_dev dev;
+ int ret;
+
+ if (!cache || !dev_p)
+ return -BLKID_ERR_PARAM;
+
+ *dev_p = NULL;
+
+ DBG(DEBUG_READ, printf("line: %s\n", cp));
+
+ if ((ret = parse_dev(cache, dev_p, &cp)) <= 0)
+ return ret;
+
+ dev = *dev_p;
+
+ while ((ret = parse_tag(cache, dev, &cp)) > 0) {
+ ;
+ }
+
+ if (dev->bid_type == NULL) {
+ DBG(DEBUG_READ,
+ printf("blkid: device %s has no TYPE\n",dev->bid_name));
+ blkid_free_dev(dev);
+ }
+
+ DBG(DEBUG_READ, blkid_debug_dump_dev(dev));
+
+ return ret;
+}
+
+/*
+ * Parse the specified filename, and return the data in the supplied or
+ * a newly allocated cache struct. If the file doesn't exist, return a
+ * new empty cache struct.
+ */
+void blkid_read_cache(blkid_cache cache)
+{
+ FILE *file;
+ char buf[4096];
+ int fd, lineno = 0;
+ struct stat st;
+
+ if (!cache)
+ return;
+
+ /*
+ * If the file doesn't exist, then we just return an empty
+ * struct so that the cache can be populated.
+ */
+ if ((fd = open(cache->bic_filename, O_RDONLY)) < 0)
+ return;
+ if (fstat(fd, &st) < 0)
+ goto errout;
+ if ((st.st_mtime == cache->bic_ftime) ||
+ (cache->bic_flags & BLKID_BIC_FL_CHANGED)) {
+ DBG(DEBUG_CACHE, printf("skipping re-read of %s\n",
+ cache->bic_filename));
+ goto errout;
+ }
+
+ DBG(DEBUG_CACHE, printf("reading cache file %s\n",
+ cache->bic_filename));
+
+ file = fdopen(fd, "r");
+ if (!file)
+ goto errout;
+
+ while (fgets(buf, sizeof(buf), file)) {
+ blkid_dev dev;
+ unsigned int end;
+
+ lineno++;
+ if (buf[0] == 0)
+ continue;
+ end = strlen(buf) - 1;
+ /* Continue reading next line if it ends with a backslash */
+ while (buf[end] == '\\' && end < sizeof(buf) - 2 &&
+ fgets(buf + end, sizeof(buf) - end, file)) {
+ end = strlen(buf) - 1;
+ lineno++;
+ }
+
+ if (blkid_parse_line(cache, &dev, buf) < 0) {
+ DBG(DEBUG_READ,
+ printf("blkid: bad format on line %d\n", lineno));
+ continue;
+ }
+ }
+ fclose(file);
+
+ /*
+ * Initially we do not need to write out the cache file.
+ */
+ cache->bic_flags &= ~BLKID_BIC_FL_CHANGED;
+ cache->bic_ftime = st.st_mtime;
+
+ return;
+errout:
+ close(fd);
+ return;
+}
+
+#ifdef TEST_PROGRAM
+static void debug_dump_dev(blkid_dev dev)
+{
+ struct list_head *p;
+
+ if (!dev) {
+ printf(" dev: NULL\n");
+ return;
+ }
+
+ printf(" dev: name = %s\n", dev->bid_name);
+ printf(" dev: DEVNO=\"0x%0llx\"\n", (long long)dev->bid_devno);
+ printf(" dev: TIME=\"%lld\"\n", (long long)dev->bid_time);
+ printf(" dev: PRI=\"%d\"\n", dev->bid_pri);
+ printf(" dev: flags = 0x%08X\n", dev->bid_flags);
+
+ list_for_each(p, &dev->bid_tags) {
+ blkid_tag tag = list_entry(p, struct blkid_struct_tag, bit_tags);
+ if (tag)
+ printf(" tag: %s=\"%s\"\n", tag->bit_name,
+ tag->bit_val);
+ else
+ printf(" tag: NULL\n");
+ }
+ printf("\n");
+}
+
+int main(int argc, char**argv)
+{
+ blkid_cache cache = NULL;
+ int ret;
+
+ blkid_debug_mask = DEBUG_ALL;
+ if (argc > 2) {
+ fprintf(stderr, "Usage: %s [filename]\n"
+ "Test parsing of the cache (filename)\n", argv[0]);
+ exit(1);
+ }
+ if ((ret = blkid_get_cache(&cache, argv[1])) < 0)
+ fprintf(stderr, "error %d reading cache file %s\n", ret,
+ argv[1] ? argv[1] : BLKID_CACHE_FILE);
+
+ blkid_put_cache(cache);
+
+ return ret;
+}
+#endif
--- /dev/null
+/*
+ * resolve.c - resolve names and tags into specific devices
+ *
+ * Copyright (C) 2001, 2003 Theodore Ts'o.
+ * Copyright (C) 2001 Andreas Dilger
+ *
+ * %Begin-Header%
+ * This file may be redistributed under the terms of the
+ * GNU Lesser General Public License.
+ * %End-Header%
+ */
+
+#include <stdio.h>
+#if HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+#include <stdlib.h>
+#include <fcntl.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include "blkidP.h"
+
+/*
+ * Find a tagname (e.g. LABEL or UUID) on a specific device.
+ */
+char *blkid_get_tag_value(blkid_cache cache, const char *tagname,
+ const char *devname)
+{
+ blkid_tag found;
+ blkid_dev dev;
+ blkid_cache c = cache;
+ char *ret = NULL;
+
+ DBG(DEBUG_RESOLVE, printf("looking for %s on %s\n", tagname, devname));
+
+ if (!devname)
+ return NULL;
+
+ if (!cache) {
+ if (blkid_get_cache(&c, NULL) < 0)
+ return NULL;
+ }
+
+ if ((dev = blkid_get_dev(c, devname, BLKID_DEV_NORMAL)) &&
+ (found = blkid_find_tag_dev(dev, tagname)))
+ ret = blkid_strdup(found->bit_val);
+
+ if (!cache)
+ blkid_put_cache(c);
+
+ return ret;
+}
+
+/*
+ * Locate a device name from a token (NAME=value string), or (name, value)
+ * pair. In the case of a token, value is ignored. If the "token" is not
+ * of the form "NAME=value" and there is no value given, then it is assumed
+ * to be the actual devname and a copy is returned.
+ */
+char *blkid_get_devname(blkid_cache cache, const char *token,
+ const char *value)
+{
+ blkid_dev dev;
+ blkid_cache c = cache;
+ char *t = 0, *v = 0;
+ char *ret = NULL;
+
+ if (!token)
+ return NULL;
+
+ if (!cache) {
+ if (blkid_get_cache(&c, NULL) < 0)
+ return NULL;
+ }
+
+ DBG(DEBUG_RESOLVE,
+ printf("looking for %s%s%s %s\n", token, value ? "=" : "",
+ value ? value : "", cache ? "in cache" : "from disk"));
+
+ if (!value) {
+ if (!strchr(token, '=')) {
+ ret = blkid_strdup(token);
+ goto out;
+ }
+ blkid_parse_tag_string(token, &t, &v);
+ if (!t || !v)
+ goto out;
+ token = t;
+ value = v;
+ }
+
+ dev = blkid_find_dev_with_tag(c, token, value);
+ if (!dev)
+ goto out;
+
+ ret = blkid_strdup(blkid_dev_devname(dev));
+
+out:
+ if (t)
+ free(t);
+ if (v)
+ free(v);
+ if (!cache) {
+ blkid_put_cache(c);
+ }
+ return (ret);
+}
+
+#ifdef TEST_PROGRAM
+int main(int argc, char **argv)
+{
+ char *value;
+ blkid_cache cache;
+
+ blkid_debug_mask = DEBUG_ALL;
+ if (argc != 2 && argc != 3) {
+ fprintf(stderr, "Usage:\t%s tagname=value\n"
+ "\t%s tagname devname\n"
+ "Find which device holds a given token or\n"
+ "Find what the value of a tag is in a device\n",
+ argv[0], argv[0]);
+ exit(1);
+ }
+ if (blkid_get_cache(&cache, "/dev/null") < 0) {
+ fprintf(stderr, "Couldn't get blkid cache\n");
+ exit(1);
+ }
+
+ if (argv[2]) {
+ value = blkid_get_tag_value(cache, argv[1], argv[2]);
+ printf("%s has tag %s=%s\n", argv[2], argv[1],
+ value ? value : "<missing>");
+ } else {
+ value = blkid_get_devname(cache, argv[1], NULL);
+ printf("%s has tag %s\n", value ? value : "<none>", argv[1]);
+ }
+ blkid_put_cache(cache);
+ return value ? 0 : 1;
+}
+#endif
--- /dev/null
+/*
+ * save.c - write the cache struct to disk
+ *
+ * Copyright (C) 2001 by Andreas Dilger
+ * Copyright (C) 2003 Theodore Ts'o
+ *
+ * %Begin-Header%
+ * This file may be redistributed under the terms of the
+ * GNU Lesser General Public License.
+ * %End-Header%
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <sys/types.h>
+#ifdef HAVE_SYS_STAT_H
+#include <sys/stat.h>
+#endif
+#ifdef HAVE_SYS_MKDEV_H
+#include <sys/mkdev.h>
+#endif
+#ifdef HAVE_ERRNO_H
+#include <errno.h>
+#endif
+#include "blkidP.h"
+
+static int save_dev(blkid_dev dev, FILE *file)
+{
+ struct list_head *p;
+
+ if (!dev || dev->bid_name[0] != '/')
+ return 0;
+
+ DBG(DEBUG_SAVE,
+ printf("device %s, type %s\n", dev->bid_name, dev->bid_type ?
+ dev->bid_type : "(null)"));
+
+ fprintf(file,
+ "<device DEVNO=\"0x%04lx\" TIME=\"%ld\"",
+ (unsigned long) dev->bid_devno, (long) dev->bid_time);
+ if (dev->bid_pri)
+ fprintf(file, " PRI=\"%d\"", dev->bid_pri);
+ list_for_each(p, &dev->bid_tags) {
+ blkid_tag tag = list_entry(p, struct blkid_struct_tag, bit_tags);
+ fprintf(file, " %s=\"%s\"", tag->bit_name,tag->bit_val);
+ }
+ fprintf(file, ">%s</device>\n", dev->bid_name);
+
+ return 0;
+}
+
+/*
+ * Write out the cache struct to the cache file on disk.
+ */
+int blkid_flush_cache(blkid_cache cache)
+{
+ struct list_head *p;
+ char *tmp = NULL;
+ const char *opened = NULL;
+ const char *filename;
+ FILE *file = NULL;
+ int fd, ret = 0;
+ struct stat st;
+
+ if (!cache)
+ return -BLKID_ERR_PARAM;
+
+ if (list_empty(&cache->bic_devs) ||
+ !(cache->bic_flags & BLKID_BIC_FL_CHANGED)) {
+ DBG(DEBUG_SAVE, printf("skipping cache file write\n"));
+ return 0;
+ }
+
+ filename = cache->bic_filename ? cache->bic_filename: BLKID_CACHE_FILE;
+
+ /* If we can't write to the cache file, then don't even try */
+ if (((ret = stat(filename, &st)) < 0 && errno != ENOENT) ||
+ (ret == 0 && access(filename, W_OK) < 0)) {
+ DBG(DEBUG_SAVE,
+ printf("can't write to cache file %s\n", filename));
+ return 0;
+ }
+
+ /*
+ * Try and create a temporary file in the same directory so
+ * that in case of error we don't overwrite the cache file.
+ * If the cache file doesn't yet exist, it isn't a regular
+ * file (e.g. /dev/null or a socket), or we couldn't create
+ * a temporary file then we open it directly.
+ */
+ if (ret == 0 && S_ISREG(st.st_mode)) {
+ tmp = malloc(strlen(filename) + 8);
+ if (tmp) {
+ sprintf(tmp, "%s-XXXXXX", filename);
+ fd = mkstemp(tmp);
+ if (fd >= 0) {
+ file = fdopen(fd, "w");
+ opened = tmp;
+ }
+ fchmod(fd, 0644);
+ }
+ }
+
+ if (!file) {
+ file = fopen(filename, "w");
+ opened = filename;
+ }
+
+ DBG(DEBUG_SAVE,
+ printf("writing cache file %s (really %s)\n",
+ filename, opened));
+
+ if (!file) {
+ ret = errno;
+ goto errout;
+ }
+
+ list_for_each(p, &cache->bic_devs) {
+ blkid_dev dev = list_entry(p, struct blkid_struct_dev, bid_devs);
+ if (!dev->bid_type)
+ continue;
+ if ((ret = save_dev(dev, file)) < 0)
+ break;
+ }
+
+ if (ret >= 0) {
+ cache->bic_flags &= ~BLKID_BIC_FL_CHANGED;
+ ret = 1;
+ }
+
+ fclose(file);
+ if (opened != filename) {
+ if (ret < 0) {
+ unlink(opened);
+ DBG(DEBUG_SAVE,
+ printf("unlinked temp cache %s\n", opened));
+ } else {
+ char *backup;
+
+ backup = malloc(strlen(filename) + 5);
+ if (backup) {
+ sprintf(backup, "%s.old", filename);
+ unlink(backup);
+ link(filename, backup);
+ free(backup);
+ }
+ rename(opened, filename);
+ DBG(DEBUG_SAVE,
+ printf("moved temp cache %s\n", opened));
+ }
+ }
+
+errout:
+ if (tmp)
+ free(tmp);
+ return ret;
+}
+
+#ifdef TEST_PROGRAM
+int main(int argc, char **argv)
+{
+ blkid_cache cache = NULL;
+ int ret;
+
+ blkid_debug_mask = DEBUG_ALL;
+ if (argc > 2) {
+ fprintf(stderr, "Usage: %s [filename]\n"
+ "Test loading/saving a cache (filename)\n", argv[0]);
+ exit(1);
+ }
+
+ if ((ret = blkid_get_cache(&cache, "/dev/null")) != 0) {
+ fprintf(stderr, "%s: error creating cache (%d)\n",
+ argv[0], ret);
+ exit(1);
+ }
+ if ((ret = blkid_probe_all(cache)) < 0) {
+ fprintf(stderr, "error (%d) probing devices\n", ret);
+ exit(1);
+ }
+ cache->bic_filename = blkid_strdup(argv[1]);
+
+ if ((ret = blkid_flush_cache(cache)) < 0) {
+ fprintf(stderr, "error (%d) saving cache\n", ret);
+ exit(1);
+ }
+
+ blkid_put_cache(cache);
+
+ return ret;
+}
+#endif
--- /dev/null
+/*
+ * tag.c - allocation/initialization/free routines for tag structs
+ *
+ * Copyright (C) 2001 Andreas Dilger
+ * Copyright (C) 2003 Theodore Ts'o
+ *
+ * %Begin-Header%
+ * This file may be redistributed under the terms of the
+ * GNU Lesser General Public License.
+ * %End-Header%
+ */
+
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+
+#include "blkidP.h"
+
+static blkid_tag blkid_new_tag(void)
+{
+ blkid_tag tag;
+
+ if (!(tag = (blkid_tag) calloc(1, sizeof(struct blkid_struct_tag))))
+ return NULL;
+
+ INIT_LIST_HEAD(&tag->bit_tags);
+ INIT_LIST_HEAD(&tag->bit_names);
+
+ return tag;
+}
+
+#ifdef CONFIG_BLKID_DEBUG
+void blkid_debug_dump_tag(blkid_tag tag)
+{
+ if (!tag) {
+ printf(" tag: NULL\n");
+ return;
+ }
+
+ printf(" tag: %s=\"%s\"\n", tag->bit_name, tag->bit_val);
+}
+#endif
+
+void blkid_free_tag(blkid_tag tag)
+{
+ if (!tag)
+ return;
+
+ DBG(DEBUG_TAG, printf(" freeing tag %s=%s\n", tag->bit_name,
+ tag->bit_val ? tag->bit_val : "(NULL)"));
+ DBG(DEBUG_TAG, blkid_debug_dump_tag(tag));
+
+ list_del(&tag->bit_tags); /* list of tags for this device */
+ list_del(&tag->bit_names); /* list of tags with this type */
+
+ if (tag->bit_name)
+ free(tag->bit_name);
+ if (tag->bit_val)
+ free(tag->bit_val);
+
+ free(tag);
+}
+
+/*
+ * Find the desired tag on a device. If value is NULL, then the
+ * first such tag is returned, otherwise return only exact tag if found.
+ */
+blkid_tag blkid_find_tag_dev(blkid_dev dev, const char *type)
+{
+ struct list_head *p;
+
+ if (!dev || !type)
+ return NULL;
+
+ list_for_each(p, &dev->bid_tags) {
+ blkid_tag tmp = list_entry(p, struct blkid_struct_tag,
+ bit_tags);
+
+ if (!strcmp(tmp->bit_name, type))
+ return tmp;
+ }
+ return NULL;
+}
+
+extern int blkid_dev_has_tag(blkid_dev dev, const char *type,
+ const char *value)
+{
+ blkid_tag tag;
+
+ if (!dev || !type)
+ return -1;
+
+ tag = blkid_find_tag_dev(dev, type);
+ if (!value)
+ return (tag != NULL);
+ if (!tag || strcmp(tag->bit_val, value))
+ return 0;
+ return 1;
+}
+
+/*
+ * Find the desired tag type in the cache.
+ * We return the head tag for this tag type.
+ */
+static blkid_tag blkid_find_head_cache(blkid_cache cache, const char *type)
+{
+ blkid_tag head = NULL, tmp;
+ struct list_head *p;
+
+ if (!cache || !type)
+ return NULL;
+
+ list_for_each(p, &cache->bic_tags) {
+ tmp = list_entry(p, struct blkid_struct_tag, bit_tags);
+ if (!strcmp(tmp->bit_name, type)) {
+ DBG(DEBUG_TAG,
+ printf(" found cache tag head %s\n", type));
+ head = tmp;
+ break;
+ }
+ }
+ return head;
+}
+
+/*
+ * Set a tag on an existing device.
+ *
+ * If value is NULL, then delete the tagsfrom the device.
+ */
+int blkid_set_tag(blkid_dev dev, const char *name,
+ const char *value, const int vlength)
+{
+ blkid_tag t = 0, head = 0;
+ char *val = 0;
+ char **dev_var = 0;
+
+ if (!dev || !name)
+ return -BLKID_ERR_PARAM;
+
+ if (!(val = blkid_strndup(value, vlength)) && value)
+ return -BLKID_ERR_MEM;
+
+ /*
+ * Certain common tags are linked directly to the device struct
+ * We need to know what they are before we do anything else because
+ * the function name parameter might get freed later on.
+ */
+ if (!strcmp(name, "TYPE"))
+ dev_var = &dev->bid_type;
+ else if (!strcmp(name, "LABEL"))
+ dev_var = &dev->bid_label;
+ else if (!strcmp(name, "UUID"))
+ dev_var = &dev->bid_uuid;
+
+ t = blkid_find_tag_dev(dev, name);
+ if (!value) {
+ if (t)
+ blkid_free_tag(t);
+ } else if (t) {
+ if (!strcmp(t->bit_val, val)) {
+ /* Same thing, exit */
+ free(val);
+ return 0;
+ }
+ free(t->bit_val);
+ t->bit_val = val;
+ } else {
+ /* Existing tag not present, add to device */
+ if (!(t = blkid_new_tag()))
+ goto errout;
+ t->bit_name = blkid_strdup(name);
+ t->bit_val = val;
+ t->bit_dev = dev;
+
+ list_add_tail(&t->bit_tags, &dev->bid_tags);
+
+ if (dev->bid_cache) {
+ head = blkid_find_head_cache(dev->bid_cache,
+ t->bit_name);
+ if (!head) {
+ head = blkid_new_tag();
+ if (!head)
+ goto errout;
+
+ DBG(DEBUG_TAG,
+ printf(" creating new cache tag head %s\n", name));
+ head->bit_name = blkid_strdup(name);
+ if (!head->bit_name)
+ goto errout;
+ list_add_tail(&head->bit_tags,
+ &dev->bid_cache->bic_tags);
+ }
+ list_add_tail(&t->bit_names, &head->bit_names);
+ }
+ }
+
+ /* Link common tags directly to the device struct */
+ if (dev_var)
+ *dev_var = val;
+
+ if (dev->bid_cache)
+ dev->bid_cache->bic_flags |= BLKID_BIC_FL_CHANGED;
+ return 0;
+
+errout:
+ if (t)
+ blkid_free_tag(t);
+ else if (val)
+ free(val);
+ if (head)
+ blkid_free_tag(head);
+ return -BLKID_ERR_MEM;
+}
+
+
+/*
+ * Parse a "NAME=value" string. This is slightly different than
+ * parse_token, because that will end an unquoted value at a space, while
+ * this will assume that an unquoted value is the rest of the token (e.g.
+ * if we are passed an already quoted string from the command-line we don't
+ * have to both quote and escape quote so that the quotes make it to
+ * us).
+ *
+ * Returns 0 on success, and -1 on failure.
+ */
+int blkid_parse_tag_string(const char *token, char **ret_type, char **ret_val)
+{
+ char *name, *value, *cp;
+
+ DBG(DEBUG_TAG, printf("trying to parse '%s' as a tag\n", token));
+
+ if (!token || !(cp = strchr(token, '=')))
+ return -1;
+
+ name = blkid_strdup(token);
+ if (!name)
+ return -1;
+ value = name + (cp - token);
+ *value++ = '\0';
+ if (*value == '"' || *value == '\'') {
+ char c = *value++;
+ if (!(cp = strrchr(value, c)))
+ goto errout; /* missing closing quote */
+ *cp = '\0';
+ }
+ value = blkid_strdup(value);
+ if (!value)
+ goto errout;
+
+ *ret_type = name;
+ *ret_val = value;
+
+ return 0;
+
+errout:
+ free(name);
+ return -1;
+}
+
+/*
+ * Tag iteration routines for the public libblkid interface.
+ *
+ * These routines do not expose the list.h implementation, which are a
+ * contamination of the namespace, and which force us to reveal far, far
+ * too much of our internal implemenation. I'm not convinced I want
+ * to keep list.h in the long term, anyway. It's fine for kernel
+ * programming, but performance is not the #1 priority for this
+ * library, and I really don't like the tradeoff of type-safety for
+ * performance for this application. [tytso:20030125.2007EST]
+ */
+
+/*
+ * This series of functions iterate over all tags in a device
+ */
+#define TAG_ITERATE_MAGIC 0x01a5284c
+
+struct blkid_struct_tag_iterate {
+ int magic;
+ blkid_dev dev;
+ struct list_head *p;
+};
+
+extern blkid_tag_iterate blkid_tag_iterate_begin(blkid_dev dev)
+{
+ blkid_tag_iterate iter;
+
+ iter = malloc(sizeof(struct blkid_struct_tag_iterate));
+ if (iter) {
+ iter->magic = TAG_ITERATE_MAGIC;
+ iter->dev = dev;
+ iter->p = dev->bid_tags.next;
+ }
+ return (iter);
+}
+
+/*
+ * Return 0 on success, -1 on error
+ */
+extern int blkid_tag_next(blkid_tag_iterate iter,
+ const char **type, const char **value)
+{
+ blkid_tag tag;
+
+ *type = 0;
+ *value = 0;
+ if (!iter || iter->magic != TAG_ITERATE_MAGIC ||
+ iter->p == &iter->dev->bid_tags)
+ return -1;
+ tag = list_entry(iter->p, struct blkid_struct_tag, bit_tags);
+ *type = tag->bit_name;
+ *value = tag->bit_val;
+ iter->p = iter->p->next;
+ return 0;
+}
+
+extern void blkid_tag_iterate_end(blkid_tag_iterate iter)
+{
+ if (!iter || iter->magic != TAG_ITERATE_MAGIC)
+ return;
+ iter->magic = 0;
+ free(iter);
+}
+
+/*
+ * This function returns a device which matches a particular
+ * type/value pair. If there is more than one device that matches the
+ * search specification, it returns the one with the highest priority
+ * value. This allows us to give preference to EVMS or LVM devices.
+ */
+extern blkid_dev blkid_find_dev_with_tag(blkid_cache cache,
+ const char *type,
+ const char *value)
+{
+ blkid_tag head;
+ blkid_dev dev;
+ int pri;
+ struct list_head *p;
+ int probe_new = 0;
+
+ if (!cache || !type || !value)
+ return NULL;
+
+ blkid_read_cache(cache);
+
+ DBG(DEBUG_TAG, printf("looking for %s=%s in cache\n", type, value));
+
+try_again:
+ pri = -1;
+ dev = 0;
+ head = blkid_find_head_cache(cache, type);
+
+ if (head) {
+ list_for_each(p, &head->bit_names) {
+ blkid_tag tmp = list_entry(p, struct blkid_struct_tag,
+ bit_names);
+
+ if (!strcmp(tmp->bit_val, value) &&
+ (tmp->bit_dev->bid_pri > pri) &&
+ !access(tmp->bit_dev->bid_name, F_OK)) {
+ dev = tmp->bit_dev;
+ pri = dev->bid_pri;
+ }
+ }
+ }
+ if (dev && !(dev->bid_flags & BLKID_BID_FL_VERIFIED)) {
+ dev = blkid_verify(cache, dev);
+ if (!dev || (dev && (dev->bid_flags & BLKID_BID_FL_VERIFIED)))
+ goto try_again;
+ }
+
+ if (!dev && !probe_new) {
+ if (blkid_probe_all_new(cache) < 0)
+ return NULL;
+ probe_new++;
+ goto try_again;
+ }
+
+ if (!dev && !(cache->bic_flags & BLKID_BIC_FL_PROBED)) {
+ if (blkid_probe_all(cache) < 0)
+ return NULL;
+ goto try_again;
+ }
+ return dev;
+}
+
+#ifdef TEST_PROGRAM
+#ifdef HAVE_GETOPT_H
+#include <getopt.h>
+#else
+extern char *optarg;
+extern int optind;
+#endif
+
+void usage(char *prog)
+{
+ fprintf(stderr, "Usage: %s [-f blkid_file] [-m debug_mask] device "
+ "[type value]\n",
+ prog);
+ fprintf(stderr, "\tList all tags for a device and exit\n");
+ exit(1);
+}
+
+int main(int argc, char **argv)
+{
+ blkid_tag_iterate iter;
+ blkid_cache cache = NULL;
+ blkid_dev dev;
+ int c, ret, found;
+ int flags = BLKID_DEV_FIND;
+ char *tmp;
+ char *file = NULL;
+ char *devname = NULL;
+ char *search_type = NULL;
+ char *search_value = NULL;
+ const char *type, *value;
+
+ while ((c = getopt (argc, argv, "m:f:")) != EOF)
+ switch (c) {
+ case 'f':
+ file = optarg;
+ break;
+ case 'm':
+ blkid_debug_mask = strtoul (optarg, &tmp, 0);
+ if (*tmp) {
+ fprintf(stderr, "Invalid debug mask: %s\n",
+ optarg);
+ exit(1);
+ }
+ break;
+ case '?':
+ usage(argv[0]);
+ }
+ if (argc > optind)
+ devname = argv[optind++];
+ if (argc > optind)
+ search_type = argv[optind++];
+ if (argc > optind)
+ search_value = argv[optind++];
+ if (!devname || (argc != optind))
+ usage(argv[0]);
+
+ if ((ret = blkid_get_cache(&cache, file)) != 0) {
+ fprintf(stderr, "%s: error creating cache (%d)\n",
+ argv[0], ret);
+ exit(1);
+ }
+
+ dev = blkid_get_dev(cache, devname, flags);
+ if (!dev) {
+ fprintf(stderr, "%s: Can not find device in blkid cache\n",
+ devname);
+ exit(1);
+ }
+ if (search_type) {
+ found = blkid_dev_has_tag(dev, search_type, search_value);
+ printf("Device %s: (%s, %s) %s\n", blkid_dev_devname(dev),
+ search_type, search_value ? search_value : "NULL",
+ found ? "FOUND" : "NOT FOUND");
+ return(!found);
+ }
+ printf("Device %s...\n", blkid_dev_devname(dev));
+
+ iter = blkid_tag_iterate_begin(dev);
+ while (blkid_tag_next(iter, &type, &value) == 0) {
+ printf("\tTag %s has value %s\n", type, value);
+ }
+ blkid_tag_iterate_end(iter);
+
+ blkid_put_cache(cache);
+ return (0);
+}
+#endif
--- /dev/null
+/*
+ * This testing program makes sure the blkid_types header file
+ *
+ * Copyright (C) 2006 by Theodore Ts'o.
+ *
+ * %Begin-Header%
+ * This file may be redistributed under the terms of the GNU Public
+ * License.
+ * %End-Header%
+ */
+
+#include <sys/types.h>
+#include "blkid/blkid_types.h"
+
+#include <stdlib.h>
+#include <stdio.h>
+
+int main(int argc, char **argv)
+{
+ if (sizeof(__u8) != 1) {
+ printf("Sizeof(__u8) is %d should be 1\n",
+ (int)sizeof(__u8));
+ exit(1);
+ }
+ if (sizeof(__s8) != 1) {
+ printf("Sizeof(_s8) is %d should be 1\n",
+ (int)sizeof(__s8));
+ exit(1);
+ }
+ if (sizeof(__u16) != 2) {
+ printf("Sizeof(__u16) is %d should be 2\n",
+ (int)sizeof(__u16));
+ exit(1);
+ }
+ if (sizeof(__s16) != 2) {
+ printf("Sizeof(__s16) is %d should be 2\n",
+ (int)sizeof(__s16));
+ exit(1);
+ }
+ if (sizeof(__u32) != 4) {
+ printf("Sizeof(__u32) is %d should be 4\n",
+ (int)sizeof(__u32));
+ exit(1);
+ }
+ if (sizeof(__s32) != 4) {
+ printf("Sizeof(__s32) is %d should be 4\n",
+ (int)sizeof(__s32));
+ exit(1);
+ }
+ if (sizeof(__u64) != 8) {
+ printf("Sizeof(__u64) is %d should be 8\n",
+ (int)sizeof(__u64));
+ exit(1);
+ }
+ if (sizeof(__s64) != 8) {
+ printf("Sizeof(__s64) is %d should be 8\n",
+ (int)sizeof(__s64));
+ exit(1);
+ }
+ printf("The blkid_types.h types are correct.\n");
+ exit(0);
+}
+
--- /dev/null
+/*
+ * version.c --- Return the version of the blkid library
+ *
+ * Copyright (C) 2004 Theodore Ts'o.
+ *
+ * %Begin-Header%
+ * This file may be redistributed under the terms of the GNU Public
+ * License.
+ * %End-Header%
+ */
+
+#if HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+#include <string.h>
+#include <stdio.h>
+#include <ctype.h>
+
+#include "blkid.h"
+
+static const char *lib_version = BLKID_VERSION;
+static const char *lib_date = BLKID_DATE;
+
+int blkid_parse_version_string(const char *ver_string)
+{
+ const char *cp;
+ int version = 0;
+
+ for (cp = ver_string; *cp; cp++) {
+ if (*cp == '.')
+ continue;
+ if (!isdigit(*cp))
+ break;
+ version = (version * 10) + (*cp - '0');
+ }
+ return version;
+}
+
+int blkid_get_library_version(const char **ver_string,
+ const char **date_string)
+{
+ if (ver_string)
+ *ver_string = lib_version;
+ if (date_string)
+ *date_string = lib_date;
+
+ return blkid_parse_version_string(lib_version);
+}
projects / util-linux / commitdiff