From 3d823454c69a519965c2cc9bb53a74bf54c2683c Mon Sep 17 00:00:00 2001 From: Karel Zak Date: Wed, 9 May 2007 16:29:27 +0200 Subject: [PATCH] mount: fsprobe: remove non-blkid code This patch removes old FS detection code and enables blkid code only when HAVE_BLKID is defined. Signed-off-by: Karel Zak --- mount/Makefile.am | 11 +- mount/fsprobe_blkid.c | 67 ------ mount/get_label_uuid.c | 221 ------------------- mount/get_label_uuid.h | 1 - mount/linux_fs.h | 292 ------------------------- mount/mount.c | 1 - mount/mount_by_label.c | 363 ------------------------------- mount/mount_by_label.h | 4 - mount/mount_guess_fstype.c | 434 ------------------------------------- mount/swapon.c | 1 - 10 files changed, 6 insertions(+), 1389 deletions(-) delete mode 100644 mount/get_label_uuid.c delete mode 100644 mount/get_label_uuid.h delete mode 100644 mount/mount_by_label.c delete mode 100644 mount/mount_by_label.h diff --git a/mount/Makefile.am b/mount/Makefile.am index 563c512c..07ba0a83 100644 --- a/mount/Makefile.am +++ b/mount/Makefile.am @@ -7,13 +7,12 @@ sbin_PROGRAMS = losetup swapon man_MANS = fstab.5 mount.8 swapoff.8 swapon.8 umount.8 losetup.8 MNTHDRS = fstab.h linux_fs.h mount_mntent.h mount_constants.h my_dev_t.h \ - mount_paths.h get_label_uuid.h lomount.h fsprobe.h \ + mount_paths.h lomount.h fsprobe.h \ mount_guess_fstype.h realpath.h xmalloc.h \ - getusername.h loop.h mount_by_label.h sundries.h + getusername.h loop.h sundries.h mount_common = fstab.c sundries.c xmalloc.c realpath.c mount_mntent.c \ - getusername.c get_label_uuid.c mount_by_label.c fsprobe_blkid.c \ - lomount.c $(MNTHDRS) ../lib/env.c + getusername.c lomount.c $(MNTHDRS) ../lib/env.c mount_SOURCES = mount.c $(mount_common) ../lib/setproctitle.c \ mount_guess_fstype.c @@ -25,7 +24,6 @@ umount_CFLAGS = $(SUID_CFLAGS) $(AM_CFLAGS) umount_LDFLAGS = $(SUID_LDFLAGS) $(AM_LDFLAGS) swapon_SOURCES = swapon.c xmalloc.c \ - get_label_uuid.c mount_by_label.c fsprobe_blkid.c \ swap_constants.h realpath.c losetup_SOURCES = lomount.c loop.h lomount.h @@ -36,6 +34,9 @@ umount_LDADD = swapon_LDADD = if HAVE_BLKID +mount_SOURCES += fsprobe_blkid.c +umount_SOURCES += fsprobe_blkid.c +swapon_SOURCES += fsprobe_blkid.c mount_LDADD += -lblkid -luuid umount_LDADD += -lblkid -luuid swapon_LDADD += -lblkid -luuid diff --git a/mount/fsprobe_blkid.c b/mount/fsprobe_blkid.c index 06169453..9ff4e31c 100644 --- a/mount/fsprobe_blkid.c +++ b/mount/fsprobe_blkid.c @@ -41,71 +41,4 @@ mount_get_devname_for_mounting(const char *spec) { return blkid_get_devname(blkid, spec, 0); } -#else -#include -#include "sundries.h" -#include "mount_by_label.h" -#include "nls.h" - -void -mount_blkid_get_cache(void) { -} - -void -mount_blkid_put_cache(void) { -} - -const char * -mount_get_volume_label_by_spec(const char *spec) { - return xstrdup(get_volume_label_by_spec(spec)); -} - -const char * -mount_get_devname(const char *spec) { - if (!strncmp(spec, "UUID=", 5)) - return get_spec_by_uuid(spec+5); - if (!strncmp(spec, "LABEL=", 6)) - return get_spec_by_volume_label(spec+6); - return spec; -} - -const char * -mount_get_devname_by_uuid(const char *uuid) { - return get_spec_by_uuid(uuid); -} - -extern char *progname; - -const char * -mount_get_devname_by_label(const char *volumelabel) { - const char *spec, *spec2; - - spec = get_spec_by_volume_label(volumelabel); - spec2 = second_occurrence_of_vol_label(volumelabel); - if (spec2) - die (EX_FAIL, - _("%s: error: the label %s occurs on both %s and %s\n"), - progname, volumelabel, spec, spec2); - return spec; -} - -const char * -mount_get_devname_for_mounting(const char *spec) { - const char *nspec; - - if (!strncmp(spec, "UUID=", 5)) { - nspec = mount_get_devname_by_uuid(spec+5); - if (nspec && verbose > 1) - printf(_("mount: going to mount %s by UUID\n"), spec); - } else if (!strncmp(spec, "LABEL=", 6)) { - nspec = mount_get_devname_by_label(spec+6); - if (nspec && verbose > 1) - printf(_("mount: going to mount %s by label\n"), spec); - } else - nspec = spec; - - return nspec; -} - - #endif diff --git a/mount/get_label_uuid.c b/mount/get_label_uuid.c deleted file mode 100644 index 6d92e077..00000000 --- a/mount/get_label_uuid.c +++ /dev/null @@ -1,221 +0,0 @@ -#ifndef HAVE_LIBBLKID -/* - * Get label. Used by mount, umount and swapon. - */ -#include -#include -#include -#include -#include - -#include "xmalloc.h" -#include "linux_fs.h" -#include "get_label_uuid.h" -#include "../disk-utils/swapheader.h" - -/* - * See whether this device has (the magic of) a RAID superblock at the end. - * If so, it probably is, or has been, part of a RAID array. - * - * For the moment this test is switched off - it causes problems. - * "Checking for a disk label should only be done on the full raid, - * not on the disks that form the raid array. This test causes a lot of - * problems when run on my striped promise fasttrak 100 array." - */ -static inline int -is_raid_partition(int fd) { -#if 0 - struct mdp_super_block mdsb; - int n; - - /* hardcode 4096 here in various places, because that's - what it's defined to be. Note that even if we used - the actual kernel headers, sizeof(mdp_super_t) is - slightly larger in the 2.2 kernel on 64-bit archs, - so using that wouldn't work. */ - lseek(fd, -4096, SEEK_END); /* Ignore possible error - about return value overflow */ - n = 4096; - if (sizeof(mdsb) < n) - n = sizeof(mdsb); - if (read(fd, &mdsb, n) != n) - return 1; /* error */ - return (mdsbmagic(mdsb) == MD_SB_MAGIC); -#else - return 0; -#endif -} - -int -reiserfs_magic_version(const char *magic) { - int rc = 0; - - if (!strncmp(magic, REISERFS_SUPER_MAGIC_STRING, - strlen(REISERFS_SUPER_MAGIC_STRING))) - rc = 1; - if (!strncmp(magic, REISER2FS_SUPER_MAGIC_STRING, - strlen(REISER2FS_SUPER_MAGIC_STRING))) - rc = 2; - if (!strncmp(magic, REISER3FS_SUPER_MAGIC_STRING, - strlen(REISER3FS_SUPER_MAGIC_STRING))) - rc = 3; - return rc; -} - -static void -store_uuid(char *udest, char *usrc) { - if (usrc) - memcpy(udest, usrc, 16); - else - memset(udest, 0, 16); -} - -static void -store_label(char **ldest, char *lsrc, int len) { - *ldest = xmalloc(len+1); - memset(*ldest, 0, len+1); - memcpy(*ldest, lsrc, len); -} - -static int -is_v1_swap_partition(int fd, char **label, char *uuid) { - int n = getpagesize(); - char *buf = xmalloc(n); - struct swap_header_v1_2 *p = (struct swap_header_v1_2 *) buf; - - if (lseek(fd, 0, SEEK_SET) == 0 - && read(fd, buf, n) == n - && !strncmp(buf+n-10, "SWAPSPACE2", 10) - && p->version == 1) { - store_uuid(uuid, p->uuid); - store_label(label, p->volume_name, 16); - return 1; - } - return 0; -} - - -/* - * Get both label and uuid. - * For now, only ext2, ext3, xfs, ocfs, ocfs2, reiserfs, swap are supported - * - * Return 0 on success. - */ -int -get_label_uuid(const char *device, char **label, char *uuid) { - int fd; - struct ext2_super_block e2sb; - struct xfs_super_block xfsb; - struct jfs_super_block jfssb; - struct ocfs_volume_header ovh; /* Oracle */ - struct ocfs_volume_label olbl; - struct ocfs2_super_block osb; - struct reiserfs_super_block reiserfssb; - int blksize; - int rv = 0; - - fd = open(device, O_RDONLY); - if (fd < 0) - return -1; - - /* If there is a RAID partition, or an error, ignore this partition */ - if (is_raid_partition(fd)) { - rv = 1; - goto done; - } - - if (is_v1_swap_partition(fd, label, uuid)) - goto done; - - if (lseek(fd, 1024, SEEK_SET) == 1024 - && read(fd, (char *) &e2sb, sizeof(e2sb)) == sizeof(e2sb) - && (ext2magic(e2sb) == EXT2_SUPER_MAGIC)) { - store_uuid(uuid, e2sb.s_uuid); - store_label(label, e2sb.s_volume_name, - sizeof(e2sb.s_volume_name)); - goto done; - } - - if (lseek(fd, 0, SEEK_SET) == 0 - && read(fd, (char *) &xfsb, sizeof(xfsb)) == sizeof(xfsb) - && (strncmp(xfsb.s_magic, XFS_SUPER_MAGIC, 4) == 0)) { - store_uuid(uuid, xfsb.s_uuid); - store_label(label, xfsb.s_fname, sizeof(xfsb.s_fname)); - goto done; - } - - if (lseek(fd, 0, SEEK_SET) == 0 - && read(fd, (char *) &ovh, sizeof(ovh)) == sizeof(ovh) - && (strncmp(ovh.signature, OCFS_MAGIC, sizeof(OCFS_MAGIC)) == 0) - && (lseek(fd, 512, SEEK_SET) == 512) - && read(fd, (char *) &olbl, sizeof(olbl)) == sizeof(olbl)) { - store_uuid(uuid, NULL); - store_label(label, olbl.label, ocfslabellen(olbl)); - goto done; - } - - if (lseek(fd, JFS_SUPER1_OFF, SEEK_SET) == JFS_SUPER1_OFF - && read(fd, (char *) &jfssb, sizeof(jfssb)) == sizeof(jfssb) - && (strncmp(jfssb.s_magic, JFS_MAGIC, 4) == 0)) { - -/* The situation for jfs is rather messy. The structure of the - superblock changed a few times, but there seems to be no good way - to check what kind of sb we have. - Old (OS/2 compatible) jfs filesystems don't have UUIDs and have - an 11-byte label in s_fpack[]. - Kernel 2.5.6 supports jfs v1; 2.5.8 supports v2; 2.5.18 has label/uuid. - Kernel 2.4.20 supports jfs v2 with label/uuid. - s_version will be 2 for new filesystems using an external log. - Other new filesystems will have version 1. - Label and UUID can be set by jfs_tune. */ - -/* Let us believe label/uuid on v2, and on v1 only when label agrees - with s_fpack in the first 11 bytes. */ - - if (assemble4le(jfssb.s_version) == 1 && - strncmp(jfssb.s_label, jfssb.s_fpack, 11) != 0) { - store_uuid(uuid, NULL); - store_label(label, jfssb.s_fpack, - sizeof(jfssb.s_fpack)); - } else { - store_uuid(uuid, jfssb.s_uuid); - store_label(label, jfssb.s_label, - sizeof(jfssb.s_label)); - } - goto done; - } - - if (lseek(fd, REISERFS_DISK_OFFSET_IN_BYTES, SEEK_SET) - == REISERFS_DISK_OFFSET_IN_BYTES - && read(fd, (char *) &reiserfssb, sizeof(reiserfssb)) - == sizeof(reiserfssb) - /* Only 3.6.x format supers have labels or uuids. - Label and UUID can be set by reiserfstune -l/-u. */ - && reiserfs_magic_version(reiserfssb.s_magic) > 1) { - store_uuid(uuid, reiserfssb.s_uuid); - store_label(label, reiserfssb.s_label, - sizeof(reiserfssb.s_label)); - goto done; - } - - for (blksize = OCFS2_MIN_BLOCKSIZE; - blksize <= OCFS2_MAX_BLOCKSIZE; - blksize <<= 1) { - int blkoff = blksize * OCFS2_SUPER_BLOCK_BLKNO; - - if (lseek(fd, blkoff, SEEK_SET) == blkoff - && read(fd, (char *) &osb, sizeof(osb)) == sizeof(osb) - && strncmp(osb.signature, - OCFS2_SUPER_BLOCK_SIGNATURE, - sizeof(OCFS2_SUPER_BLOCK_SIGNATURE)) == 0) { - store_uuid(uuid, osb.s_uuid); - store_label(label, osb.s_label, sizeof(osb.s_label)); - goto done; - } - } - rv = 1; - done: - close(fd); - return rv; -} -#endif diff --git a/mount/get_label_uuid.h b/mount/get_label_uuid.h deleted file mode 100644 index f52cc521..00000000 --- a/mount/get_label_uuid.h +++ /dev/null @@ -1 +0,0 @@ -int get_label_uuid(const char *device, char **label, char *uuid); diff --git a/mount/linux_fs.h b/mount/linux_fs.h index 430cbedf..e47da2f5 100644 --- a/mount/linux_fs.h +++ b/mount/linux_fs.h @@ -13,295 +13,3 @@ #endif #endif -#define MINIX_SUPER_MAGIC 0x137F /* minix v1, 14 char names */ -#define MINIX_SUPER_MAGIC2 0x138F /* minix v1, 30 char names */ -#define MINIX2_SUPER_MAGIC 0x2468 /* minix v2, 14 char names */ -#define MINIX2_SUPER_MAGIC2 0x2478 /* minix v2, 30 char names */ -struct minix_super_block { - u_char s_dummy[16]; - u_char s_magic[2]; -}; -#define minixmagic(s) assemble2le(s.s_magic) - -#define ISODCL(from, to) (to - from + 1) -#define ISO_STANDARD_ID "CD001" -struct iso_volume_descriptor { - char type[ISODCL(1,1)]; /* 711 */ - char id[ISODCL(2,6)]; - char version[ISODCL(7,7)]; - char data[ISODCL(8,2048)]; -}; - -#define HS_STANDARD_ID "CDROM" -struct hs_volume_descriptor { - char foo[ISODCL ( 1, 8)]; /* 733 */ - char type[ISODCL ( 9, 9)]; /* 711 */ - char id[ISODCL ( 10, 14)]; - char version[ISODCL ( 15, 15)]; /* 711 */ - char data[ISODCL(16,2048)]; -}; - -#define EXT_SUPER_MAGIC 0x137D -struct ext_super_block { - u_char s_dummy[56]; - u_char s_magic[2]; -}; -#define extmagic(s) assemble2le(s.s_magic) - -#define EXT2_PRE_02B_MAGIC 0xEF51 -#define EXT2_SUPER_MAGIC 0xEF53 -#define EXT3_FEATURE_COMPAT_HAS_JOURNAL 0x0004 -struct ext2_super_block { - u_char s_dummy1[56]; - u_char s_magic[2]; - u_char s_dummy2[34]; - u_char s_feature_compat[4]; - u_char s_feature_incompat[4]; - u_char s_feature_ro_compat[4]; - u_char s_uuid[16]; - u_char s_volume_name[16]; - u_char s_dummy3[88]; - u_char s_journal_inum[4]; /* ext3 only */ -}; -#define ext2magic(s) assemble2le(s.s_magic) - -struct reiserfs_super_block -{ - u_char s_block_count[4]; - u_char s_free_blocks[4]; - u_char s_root_block[4]; - u_char s_journal_block[4]; - u_char s_journal_dev[4]; - u_char s_orig_journal_size[4]; - u_char s_journal_trans_max[4]; - u_char s_journal_block_count[4]; - u_char s_journal_max_batch[4]; - u_char s_journal_max_commit_age[4]; - u_char s_journal_max_trans_age[4]; - u_char s_blocksize[2]; - u_char s_oid_maxsize[2]; - u_char s_oid_cursize[2]; - u_char s_state[2]; - u_char s_magic[10]; - u_char s_dummy1[10]; - u_char s_version[2]; /* only valid with relocated journal */ - - /* only valid in 3.6.x format --mason@suse.com */ - u_char s_dummy2[10]; - u_char s_uuid[16]; - u_char s_label[16]; -}; -#define REISERFS_SUPER_MAGIC_STRING "ReIsErFs" -#define REISER2FS_SUPER_MAGIC_STRING "ReIsEr2Fs" -/* also known as REISER2FS_JR_SUPER_MAGIC_STRING */ -#define REISER3FS_SUPER_MAGIC_STRING "ReIsEr3Fs" -#define REISERFS_DISK_OFFSET_IN_BYTES (64 * 1024) -/* the spot for the super in versions 3.5 - 3.5.10 (inclusive) */ -#define REISERFS_OLD_DISK_OFFSET_IN_BYTES (8 * 1024) - -/* values of s_version when REISER3FS_SUPER_MAGIC_STRING is found */ -#define REISERFS_VERSION_1 0 /* 3.5.x disk format */ -#define REISERFS_VERSION_2 2 /* 3.6.x disk format */ - -extern int reiserfs_magic_version(const char *magic); - -#define _XIAFS_SUPER_MAGIC 0x012FD16D -struct xiafs_super_block { - u_char s_boot_segment[512]; /* 1st sector reserved for boot */ - u_char s_dummy[60]; - u_char s_magic[4]; -}; -#define xiafsmagic(s) assemble4le(s.s_magic) - -/* From jj@sunsite.ms.mff.cuni.cz Mon Mar 23 15:19:05 1998 */ -#define UFS_SUPER_MAGIC_LE 0x00011954 -#define UFS_SUPER_MAGIC_BE 0x54190100 -struct ufs_super_block { - u_char s_dummy[0x55c]; - u_char s_magic[4]; -}; -#define ufsmagic(s) assemble4le(s.s_magic) - -/* From Richard.Russon@ait.co.uk Wed Feb 24 08:05:27 1999 */ -#define NTFS_SUPER_MAGIC "NTFS" -struct ntfs_super_block { - u_char s_dummy[3]; - u_char s_magic[4]; -}; - -/* From inspection of a few FAT filesystems - aeb */ -/* Unfortunately I find almost the same thing on an extended partition; - it looks like a primary has some directory entries where the extended - has a partition table: IO.SYS, MSDOS.SYS, WINBOOT.SYS */ -struct fat_super_block { - u_char s_dummy[3]; - u_char s_os[8]; /* "MSDOS5.0" or "MSWIN4.0" or "MSWIN4.1" */ - /* mtools-3.9.4 writes "MTOOL394" */ - u_char s_dummy2[32]; - u_char s_label[11]; /* for DOS? */ - u_char s_fs[8]; /* "FAT12 " or "FAT16 " or all zero */ - /* OS/2 BM has "FAT " here. */ - u_char s_dummy3[9]; - u_char s_label2[11]; /* for Windows? */ - u_char s_fs2[8]; /* garbage or "FAT32 " */ -}; - -#define XFS_SUPER_MAGIC "XFSB" -struct xfs_super_block { - u_char s_magic[4]; - u_char s_dummy[28]; - u_char s_uuid[16]; - u_char s_dummy2[60]; - u_char s_fname[12]; -}; - -#define CRAMFS_SUPER_MAGIC 0x28cd3d45 -#define CRAMFS_SUPER_MAGIC_BE 0x453dcd28 -struct cramfs_super_block { - u_char s_magic[4]; - u_char s_dummy[12]; - u_char s_id[16]; -}; -#define cramfsmagic(s) assemble4le(s.s_magic) - -#define HFS_SUPER_MAGIC 0x4244 -struct hfs_super_block { - u_char s_magic[2]; /* drSigWord */ - u_char s_dummy[18]; - u_char s_blksize[4]; /* drAlBlkSiz */ -}; -#define hfsmagic(s) assemble2be(s.s_magic) -#define hfsblksize(s) assemble4be(s.s_blksize) - -#define HPFS_SUPER_MAGIC 0xf995e849 -struct hpfs_super_block { - u_char s_magic[4]; - u_char s_magic2[4]; -}; -#define hpfsmagic(s) assemble4le(s.s_magic) - -struct adfs_super_block { - u_char s_dummy[448]; - u_char s_blksize[1]; - u_char s_dummy2[62]; - u_char s_checksum[1]; -}; -#define adfsblksize(s) ((uint) s.s_blksize[0]) - -/* found in first 4 bytes of block 1 */ -struct vxfs_super_block { - u_char s_magic[4]; -}; -#define vxfsmagic(s) assemble4le(s.s_magic) -#define VXFS_SUPER_MAGIC 0xa501FCF5 - -struct jfs_super_block { - char s_magic[4]; - u_char s_version[4]; - u_char s_dummy1[93]; - char s_fpack[11]; - u_char s_dummy2[24]; - u_char s_uuid[16]; - char s_label[16]; -}; -#define JFS_SUPER1_OFF 0x8000 -#define JFS_MAGIC "JFS1" - -struct sysv_super_block { - u_char s_dummy1[504]; - u_char s_magic[4]; - u_char type[4]; -}; -#define sysvmagic(s) assemble4le(s.s_magic) -#define SYSV_SUPER_MAGIC 0xfd187e20 - -struct mdp_super_block { - u_char md_magic[4]; -}; -#define MD_SB_MAGIC 0xa92b4efc -#define mdsbmagic(s) assemble4le(s.md_magic) - -struct ocfs_volume_header { - u_char minor_version[4]; - u_char major_version[4]; - u_char signature[128]; -}; - -struct ocfs_volume_label { - u_char disk_lock[48]; - u_char label[64]; - u_char label_len[2]; -}; - -#define ocfslabellen(o) assemble2le(o.label_len) -#define OCFS_MAGIC "OracleCFS" - -struct ocfs2_super_block { - u_char signature[8]; - u_char s_dummy1[184]; - u_char s_dummy2[80]; - u_char s_label[64]; - u_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 efs_volume_directory { /* size 16 */ - char vd_name[8]; - char vd_lbn[4]; - char vd_nbytes[4]; -}; - -struct efs_partition_table { /* size 12 */ - char pt_nblks[4]; - char pt_firstlbn[4]; - char pt_type[4]; -}; - -struct efs_volume_header { /* size 512 */ - char vh_magic[4]; - short vh_rootpt; - short vh_swappt; - char vh_bootfile[16]; - char pad[48]; - struct efs_volume_directory vh_vd[15]; - struct efs_partition_table vh_pt[16]; - int vh_csum; - int vh_fill; -}; - -struct efs_super { - char fs_stuff[512+28]; - char fs_magic[4]; - char fs_fname[6]; - char fs_fpack[6]; - /* ... */ -}; - -#define EFS_VHMAGIC 0x0be5a941 /* big endian */ -#define EFS_SBMAGIC 0x00072959 /* idem */ -#define EFS_SBMAGIC2 0x0007295a /* idem */ - -static inline int -assemble2le(unsigned char *p) { - return (p[0] | (p[1] << 8)); -} - -static inline int -assemble2be(unsigned char *p) { - return (p[1] | (p[0] << 8)); -} - -static inline int -assemble4le(unsigned char *p) { - return (p[0] | (p[1] << 8) | (p[2] << 16) | (p[3] << 24)); -} - -static inline int -assemble4be(unsigned char *p) { - return (p[3] | (p[2] << 8) | (p[1] << 16) | (p[0] << 24)); -} diff --git a/mount/mount.c b/mount/mount.c index 2668c402..5ab9062f 100644 --- a/mount/mount.c +++ b/mount/mount.c @@ -39,7 +39,6 @@ #include "loop.h" #include "linux_fs.h" /* for BLKGETSIZE */ #include "mount_guess_fstype.h" -#include "mount_by_label.h" #include "getusername.h" #include "mount_paths.h" #include "env.h" diff --git a/mount/mount_by_label.c b/mount/mount_by_label.c deleted file mode 100644 index 4899f03b..00000000 --- a/mount/mount_by_label.c +++ /dev/null @@ -1,363 +0,0 @@ -#ifndef HAVE_LIBBLKID -/* - * mount_by_label.c - aeb - * - * 1999-02-22 Arkadiusz Mi¶kiewicz - * - added Native Language Support - * 2000-01-20 James Antill - * - Added error message if /proc/partitions cannot be opened - * 2000-05-09 Erik Troan - * - Added cache for UUID and disk labels - * 2000-11-07 Nathan Scott - * - Added XFS support - * 2001-11-22 Kirby Bohling - * - Added support of labels on LVM - * 2002-03-21 Christoph Hellwig - * - Added JFS support - * 2002-07-11 Christoph Hellwig - * - Added JFS v2 format support - * 2002-07-26 Luciano Chavez - * - Added EVMS support - */ - -#include -#include -#include -#include -#include -#include -#include /* needed for opendir */ -#include -#include "sundries.h" /* for xstrdup */ -#include "linux_fs.h" -#include "get_label_uuid.h" -#include "mount_by_label.h" -#include "nls.h" - -#define PROC_PARTITIONS "/proc/partitions" -#define DEVLABELDIR "/dev" -#define VG_DIR "/proc/lvm/VGs" -#define EVMS_VOLUME_NAME_SIZE 127 -#define PROC_EVMS_VOLUMES "/proc/evms/volumes" - -extern char *progname; - -static struct uuidCache_s { - struct uuidCache_s *next; - char uuid[16]; - char *label; - char *device; -} *uuidCache = NULL; - -static void -uuidcache_addentry(char *device, char *label, char *uuid) { - struct uuidCache_s *last; - - if (!uuidCache) { - last = uuidCache = malloc(sizeof(*uuidCache)); - } else { - for (last = uuidCache; last->next; last = last->next); - last->next = malloc(sizeof(*uuidCache)); - last = last->next; - } - last->next = NULL; - last->device = device; - last->label = label; - memcpy(last->uuid, uuid, sizeof(last->uuid)); -} - -/* LVM support - Kirby Bohling */ -static void -uuidcache_init_lvm(void) { - char buffer[PATH_MAX]; - char lvm_device[PATH_MAX]; - DIR *vg_dir, *lv_list; - struct dirent *vg_iter, *lv_iter; - char uuid[16], *label; - - vg_dir = opendir(VG_DIR); - if (vg_dir == NULL) /* to be expected */ - return; - - seekdir(vg_dir, 2); - while ((vg_iter = readdir(vg_dir)) != 0) { - sprintf(buffer, "%s/%s/LVs", VG_DIR, vg_iter->d_name); - lv_list = opendir(buffer); - if (lv_list == NULL) { - perror("uuidcache_init_lvm"); - continue; - } - seekdir(lv_list, 2); - while ((lv_iter = readdir(lv_list)) != 0) { - /* Now we have the file.. could open it and read out - * where the device is, read the first line, second - * field... Instead we guess. - */ - sprintf(lvm_device, "%s/%s/%s", DEVLABELDIR, - vg_iter->d_name, lv_iter->d_name); - if (!get_label_uuid(lvm_device, &label, uuid)) - uuidcache_addentry(xstrdup(lvm_device), - label, uuid); - } - closedir(lv_list); - } - closedir(vg_dir); -} - -static int -uuidcache_init_evms(void) { - FILE *procvol; - char *label; - char uuid[16]; - char volname[EVMS_VOLUME_NAME_SIZE+1]; - char line[EVMS_VOLUME_NAME_SIZE+80]; - - procvol = fopen(PROC_EVMS_VOLUMES, "r"); - if (!procvol) - return 0; - - while (fgets(line, sizeof(line), procvol)) { - if (sscanf(line, "%*d %*d %*d %*s %*s %[^\n]", volname) == 1) { - if (!get_label_uuid(volname, &label, uuid)) - uuidcache_addentry(xstrdup(volname), label, uuid); - } - } - - fclose(procvol); - - return 1; -} - -/* - * xvm is a proprietary sgi volume manager, it goes into /proc/partitions - * like this: - * - * 4 0 2210817 xvm/local/vol/myvolume/data/block - * 4 1 2210817 xvm/local/vol/myvolume/rt/block - * 4 2 2210817 xvm/local/vol/myvolume/log/block - * 4 3 2210818 xvm/local/vol/discs3/data/block - * - * The heuristics here are that the device should start with "xvm," - * but should not end in "log/block" or "rt/block" - those are - * special devices for the xfs filesystem external log & realtime device. - */ - -/* Return 1 if this looks like an xvm device that should be scanned */ -static int -is_xvm(char *ptname) -{ - int len; - - /* if it doesn't start with "xvm," we're done. */ - if (strncmp(ptname, "xvm", 3)) - return 0; - - len = strlen(ptname); - /* - * check for "log/block" or "rt/block" on the end, - * these are special - don't scan. - */ - if (!strncmp(ptname+(len-9), "log/block", 9) || - !strncmp(ptname+(len-8), "rt/block", 8)) - return 0; - - return 1; -} - -static void -uuidcache_init(void) { - char line[100]; - char *s; - int ma, mi, sz; - static char ptname[100]; - FILE *procpt; - char uuid[16], *label; - char device[110]; - int firstPass; - int handleOnFirst; -#if 0 - char iobuf[32*1024]; /* For setvbuf */ -#endif - - if (uuidCache) - return; - - if (uuidcache_init_evms()) - return; - - procpt = fopen(PROC_PARTITIONS, "r"); - if (!procpt) { - static int warn = 0; - if (!warn++) - error (_("%s: could not open %s, so UUID and LABEL " - "conversion cannot be done.\n"), - progname, PROC_PARTITIONS); - return; - } -#if 0 -/* Ugly kludge - the contents of /proc/partitions change in time, - and this causes failures when the file is not read in one go. - In particular, one cannot use stdio on /proc/partitions. - Doing this ourselves is not easy either, since stat returns 0 - so the size is unknown. We might try increasing buffer sizes - until a single read gets all. For now only pick a largish buffer size. */ -/* All these troubles are mainly caused by people who patch the kernel - to keep statistics in /proc/partitions. Of course, statistics belong - in some /proc/diskstats, not in some /proc file that happened to - exist already. */ - - setvbuf(procpt, iobuf, _IOFBF, sizeof(iobuf)); -#endif - - for (firstPass = 1; firstPass >= 0; firstPass--) { - fseek(procpt, 0, SEEK_SET); - - while (fgets(line, sizeof(line), procpt)) { - if (!index(line, '\n')) - break; - - if (sscanf (line, " %d %d %d %[^\n ]", - &ma, &mi, &sz, ptname) != 4) - continue; - - /* skip extended partitions (heuristic: size 1) */ - if (sz == 1) - continue; - - /* look only at md devices on first pass */ - handleOnFirst = !strncmp(ptname, "md", 2); - if (firstPass != handleOnFirst) - continue; - - /* skip entire disk (minor 0, 64, ... on ide; - 0, 16, ... on sd) */ - /* heuristic: partition name ends in a digit */ - /* devfs has .../disc and .../part1 etc. */ - - for (s = ptname; *s; s++); - if (isdigit(s[-1]) || is_xvm(ptname)) { - - /* - * Note: this is a heuristic only - there is no reason - * why these devices should live in /dev. - * Perhaps this directory should be specifiable by option. - * One might for example have /devlabel with links to /dev - * for the devices that may be accessed in this way. - * (This is useful, if the cdrom on /dev/hdc must not - * be accessed.) - */ - sprintf(device, "%s/%s", DEVLABELDIR, ptname); - if (!get_label_uuid(device, &label, uuid)) - uuidcache_addentry(xstrdup(device), label, uuid); - } - } - } - - fclose(procpt); - - uuidcache_init_lvm(); -} - -#define UUID 1 -#define VOL 2 - -static const char * -get_spec_by_x(int n, const char *t) { - struct uuidCache_s *uc; - - uuidcache_init(); - uc = uuidCache; - - while (uc) { - switch (n) { - case UUID: - if (!memcmp(t, uc->uuid, sizeof(uc->uuid))) - return xstrdup(uc->device); - break; - case VOL: - if (uc->label && !strcmp(t, uc->label)) - return xstrdup(uc->device); - break; - } - uc = uc->next; - } - return NULL; -} - -static u_char -fromhex(char c) { - if (isdigit(c)) - return (c - '0'); - else if (islower(c)) - return (c - 'a' + 10); - else - return (c - 'A' + 10); -} - -const char * -get_spec_by_uuid(const char *s) { - u_char uuid[16]; - int i; - - if (strlen(s) != 36 || - s[8] != '-' || s[13] != '-' || s[18] != '-' || s[23] != '-') - goto bad_uuid; - for (i=0; i<16; i++) { - if (*s == '-') s++; - if (!isxdigit(s[0]) || !isxdigit(s[1])) - goto bad_uuid; - uuid[i] = ((fromhex(s[0])<<4) | fromhex(s[1])); - s += 2; - } - return get_spec_by_x(UUID, uuid); - - bad_uuid: - die(EX_USAGE, _("%s: bad UUID"), progname); - return NULL; /* just for gcc */ -} - -const char * -get_spec_by_volume_label(const char *s) { - return get_spec_by_x(VOL, s); -} - -const char * -get_volume_label_by_spec(const char *spec) { - struct uuidCache_s *uc; - - uuidcache_init(); - uc = uuidCache; - - while(uc) { - if (!strcmp(spec, uc->device)) - return uc->label; - uc = uc->next; - } - return NULL; -} - -/* - * second_occurrence_of_vol_label() - * As labels are user defined they are not necessarily - * system-wide unique. Make sure that they are. - */ -const char * -second_occurrence_of_vol_label (const char *label) { - struct uuidCache_s *last; - int occurrences = 0; - - uuidcache_init(); - - for (last = uuidCache; last; last = last->next) { - if (last->label && !strcmp(last->label, label)) { - occurrences++; - if (occurrences == 2) - return last->device; - } - } - - return NULL; -} - - -#endif diff --git a/mount/mount_by_label.h b/mount/mount_by_label.h deleted file mode 100644 index f5c930d7..00000000 --- a/mount/mount_by_label.h +++ /dev/null @@ -1,4 +0,0 @@ -const char *get_spec_by_uuid(const char *uuid); -const char *get_spec_by_volume_label(const char *volumelabel); -const char *get_volume_label_by_spec(const char *spec); -const char *second_occurrence_of_vol_label(const char *label); diff --git a/mount/mount_guess_fstype.c b/mount/mount_guess_fstype.c index 51d87500..01c3fc72 100644 --- a/mount/mount_guess_fstype.c +++ b/mount/mount_guess_fstype.c @@ -46,8 +46,6 @@ #define ETC_FILESYSTEMS "/etc/filesystems" #define PROC_FILESYSTEMS "/proc/filesystems" -#ifdef HAVE_LIBBLKID - char * do_guess_fstype(const char *device) { @@ -60,438 +58,6 @@ known_fstype(const char *fstype) return blkid_known_fstype(fstype); } -#else -#define SIZE(a) (sizeof(a)/sizeof(a[0])) - -/* Most file system types can be recognized by a `magic' number - in the superblock. Note that the order of the tests is - significant: by coincidence a filesystem can have the - magic numbers for several file system types simultaneously. - For example, the romfs magic lives in the 1st sector; - xiafs does not touch the 1st sector and has its magic in - the 2nd sector; ext2 does not touch the first two sectors. */ - -static inline unsigned short -swapped(unsigned short a) { - return (a>>8) | (a<<8); -} - -/* - char *guess_fstype(const char *device); - - Probes the device and attempts to determine the type of filesystem - contained within. - - Original routine by ; made into a function - for mount(8) by Mike Grupenhoff . - Corrected the test for xiafs - aeb - Read the superblock only once - aeb - Added a very weak heuristic for vfat - aeb - Added efs, iso9660, minix-v2, romfs, qnx4, udf, vxfs, swap - aeb - Added a test for high sierra (iso9660) - quinlan@bucknell.edu - Added ufs from a patch by jj. But maybe there are several types of ufs? - Added ntfs from a patch by Richard Russon. - Added xfs - 2000-03-21 Martin K. Petersen - Added cramfs, hfs, hpfs, adfs - Sepp Wijnands - Added ext3 - Andrew Morton - Added jfs - Christoph Hellwig - Added sysv - Tim Launchbury - Added udf - Bryce Nesbitt - Added ocfs, ocfs2 - Manish Singh - http://oss.oracle.com/projects/ocfs2/ -*/ -static char -*magic_known[] = { - "adfs", "bfs", "cramfs", "efs", "ext", "ext2", "ext3", - "hfs", "hpfs", "iso9660", "jfs", "minix", "ntfs", "ocfs", "ocfs2", - "qnx4", "reiserfs", "romfs", "swap", "sysv", "udf", "ufs", - "vxfs", "xfs", "xiafs" -}; - -static int -known_fstype(const char *fstype) { - char **m; - - for (m = magic_known; m - magic_known < SIZE(magic_known); m++) - if (!strcmp(*m, fstype)) - return 1; - return 0; -} - -/* - * udf magic - I find that trying to mount garbage as an udf fs - * causes a very large kernel delay, almost killing the machine. - * So, we do not try udf unless there is positive evidence that it - * might work. Strings below taken from ECMA 167. - */ -/* - * It seems that before udf 2.00 the volume descriptor was not well - * defined. For 2.00 you're supposed to keep scanning records until - * you find one NOT in this list. (See ECMA 2/8.3.1). - */ -static char -*udf_magic[] = { "BEA01", "BOOT2", "CD001", "CDW02", "NSR02", - "NSR03", "TEA01" }; - - -static int -may_be_udf(const char *id) { - char **m; - - for (m = udf_magic; m - udf_magic < SIZE(udf_magic); m++) - if (!strncmp(*m, id, 5)) - return 1; - return 0; -} - -/* we saw "CD001" - may be iso9660 or udf - Bryce Nesbitt */ -static int -is_really_udf(int fd) { - int j, bs; - struct iso_volume_descriptor isosb; - - /* determine the block size by scanning in 2K increments - (block sizes larger than 2K will be null padded) */ - for (bs = 1; bs < 16; bs++) { - lseek(fd, bs*2048+32768, SEEK_SET); - if (read(fd, (char *)&isosb, sizeof(isosb)) != sizeof(isosb)) - return 0; - if (isosb.id[0]) - break; - } - - /* Scan up to another 64 blocks looking for additional VSD's */ - for (j = 1; j < 64; j++) { - if (j > 1) { - lseek(fd, j*bs*2048+32768, SEEK_SET); - if (read(fd, (char *)&isosb, sizeof(isosb)) - != sizeof(isosb)) - return 0; - } - /* If we find NSR0x then call it udf: - NSR01 for UDF 1.00 - NSR02 for UDF 1.50 - NSR03 for UDF 2.00 */ - if (!strncmp(isosb.id, "NSR0", 4)) - return 1; - if (!may_be_udf(isosb.id)) - return 0; - } - - return 0; -} - -static int -may_be_swap(const char *s) { - return (strncmp(s-10, "SWAP-SPACE", 10) == 0 || - strncmp(s-10, "SWAPSPACE2", 10) == 0); -} - -/* rather weak necessary condition */ -static int -may_be_adfs(const u_char *s) { - u_char *p; - int sum; - - p = (u_char *) s + 511; - sum = 0; - while (--p != s) - sum = (sum >> 8) + (sum & 0xff) + *p; - - return (sum == p[511]); -} - -char * -do_guess_fstype(const char *device) { - int fd; - char *type = NULL; - union { - struct xiafs_super_block xiasb; - char romfs_magic[8]; - char qnx4fs_magic[10]; /* ignore first 4 bytes */ - long bfs_magic; - struct ntfs_super_block ntfssb; - struct fat_super_block fatsb; - struct xfs_super_block xfsb; - struct cramfs_super_block cramfssb; - struct ocfs_volume_header ovh; - struct efs_volume_header efsvh; - struct efs_super efssb; - } xsb; /* stuff at 0 */ - union { - struct minix_super_block ms; - struct ext_super_block es; - struct ext2_super_block e2s; - struct vxfs_super_block vs; - } sb; /* stuff at 1024 */ - struct ufs_super_block ufssb; - union { - struct iso_volume_descriptor iso; - struct hs_volume_descriptor hs; - } isosb; - struct reiserfs_super_block reiserfssb; /* block 64 or 8 */ - struct jfs_super_block jfssb; /* block 32 */ - struct hfs_super_block hfssb; - struct hpfs_super_block hpfssb; - struct adfs_super_block adfssb; - struct sysv_super_block svsb; - struct ocfs2_super_block osb; - struct stat statbuf; - - /* opening and reading an arbitrary unknown path can have - undesired side effects - first check that `device' refers - to a block device or ordinary file */ - if (stat (device, &statbuf) || - !(S_ISBLK(statbuf.st_mode) || S_ISREG(statbuf.st_mode))) - return 0; - - fd = open(device, O_RDONLY); - if (fd < 0) - return 0; - - /* do seeks and reads in disk order, otherwise a very short - partition may cause a failure because of read error */ - - if (!type) { - /* block 0 */ - if (lseek(fd, 0, SEEK_SET) != 0 - || read(fd, (char *) &xsb, sizeof(xsb)) != sizeof(xsb)) - goto try_iso9660; - /* Gyorgy Kovesdi: none of my photocds has a readable block 0 */ - - if (xiafsmagic(xsb.xiasb) == _XIAFS_SUPER_MAGIC) - type = "xiafs"; - else if(!strncmp(xsb.romfs_magic, "-rom1fs-", 8)) - type = "romfs"; - else if(!strncmp(xsb.xfsb.s_magic, XFS_SUPER_MAGIC, 4)) - type = "xfs"; - else if(!strncmp(xsb.ovh.signature, OCFS_MAGIC, sizeof(OCFS_MAGIC))) - type = "ocfs"; - else if(!strncmp(xsb.qnx4fs_magic+4, "QNX4FS", 6)) - type = "qnx4"; - else if(xsb.bfs_magic == 0x1badface) - type = "bfs"; - else if(!strncmp(xsb.ntfssb.s_magic, NTFS_SUPER_MAGIC, - sizeof(xsb.ntfssb.s_magic))) - type = "ntfs"; - else if(cramfsmagic(xsb.cramfssb) == CRAMFS_SUPER_MAGIC || - cramfsmagic(xsb.cramfssb) == CRAMFS_SUPER_MAGIC_BE) - type = "cramfs"; - else if (assemble4be(xsb.efsvh.vh_magic) == EFS_VHMAGIC) - type = "efs"; /* EFS volume header */ - /* might check checksum here */ - else if (assemble4be(xsb.efssb.fs_magic) == EFS_SBMAGIC || - assemble4be(xsb.efssb.fs_magic) == EFS_SBMAGIC2) - type = "efs"; /* EFS partition */ - else if ((!strncmp(xsb.fatsb.s_os, "MSDOS", 5) || - !strncmp(xsb.fatsb.s_os, "MSWIN", 5) || - !strncmp(xsb.fatsb.s_os, "MTOOL", 5) || - !strncmp(xsb.fatsb.s_os, "IBM", 3) || - !strncmp(xsb.fatsb.s_os, "DRDOS", 5) || - !strncmp(xsb.fatsb.s_os, "mkdosfs", 7) || - !strncmp(xsb.fatsb.s_os, "kmkdosfs", 8) || - /* Michal Svec: created by fdformat, old msdos utility for - formatting large (1.7) floppy disks. */ - !strncmp(xsb.fatsb.s_os, "CH-FOR18", 8)) - && (!strncmp(xsb.fatsb.s_fs, "FAT12 ", 8) || - !strncmp(xsb.fatsb.s_fs, "FAT16 ", 8) || - !strncmp(xsb.fatsb.s_fs2, "FAT32 ", 8))) - type = "vfat"; /* only guessing - might as well be fat or umsdos */ - } - - if (!type) { - /* sector 1 */ - if (lseek(fd, 512 , SEEK_SET) != 512 - || read(fd, (char *) &svsb, sizeof(svsb)) != sizeof(svsb)) - goto io_error; - if (sysvmagic(svsb) == SYSV_SUPER_MAGIC ) - type = "sysv"; - } - - if (!type) { - /* block 1 */ - if (lseek(fd, 1024, SEEK_SET) != 1024 || - read(fd, (char *) &sb, sizeof(sb)) != sizeof(sb)) - goto io_error; - - /* ext2 has magic in little-endian on disk, so "swapped" is - superfluous; however, there have existed strange byteswapped - PPC ext2 systems */ - if (ext2magic(sb.e2s) == EXT2_SUPER_MAGIC || - ext2magic(sb.e2s) == EXT2_PRE_02B_MAGIC || - ext2magic(sb.e2s) == swapped(EXT2_SUPER_MAGIC)) { - type = "ext2"; - - /* maybe even ext3? */ - if ((assemble4le(sb.e2s.s_feature_compat) - & EXT3_FEATURE_COMPAT_HAS_JOURNAL) && - assemble4le(sb.e2s.s_journal_inum) != 0) - type = "ext3"; /* "ext3,ext2" */ - } - - else if (minixmagic(sb.ms) == MINIX_SUPER_MAGIC || - minixmagic(sb.ms) == MINIX_SUPER_MAGIC2 || - minixmagic(sb.ms) == swapped(MINIX_SUPER_MAGIC2) || - minixmagic(sb.ms) == MINIX2_SUPER_MAGIC || - minixmagic(sb.ms) == MINIX2_SUPER_MAGIC2) - type = "minix"; - - else if (extmagic(sb.es) == EXT_SUPER_MAGIC) - type = "ext"; - - else if (vxfsmagic(sb.vs) == VXFS_SUPER_MAGIC) - type = "vxfs"; - } - - if (!type) { - /* block 1 */ - if (lseek(fd, 0x400, SEEK_SET) != 0x400 - || read(fd, (char *) &hfssb, sizeof(hfssb)) != sizeof(hfssb)) - goto io_error; - - /* also check if block size is equal to 512 bytes, - or a multiple. (I see 1536 here.) */ - if (hfsmagic(hfssb) == HFS_SUPER_MAGIC && /* always BE */ - hfsblksize(hfssb) != 0 && - (hfsblksize(hfssb) & 0x1ff) == 0) - type = "hfs"; - } - - if (!type) { - /* block 3 */ - if (lseek(fd, 0xc00, SEEK_SET) != 0xc00 - || read(fd, (char *) &adfssb, sizeof(adfssb)) != sizeof(adfssb)) - goto io_error; - - /* only a weak test */ - if (may_be_adfs((u_char *) &adfssb) - && (adfsblksize(adfssb) >= 8 && - adfsblksize(adfssb) <= 10)) - type = "adfs"; - } - - if (!type) { - int mag; - - /* block 8 */ - if (lseek(fd, 8192, SEEK_SET) != 8192 - || read(fd, (char *) &ufssb, sizeof(ufssb)) != sizeof(ufssb)) - goto io_error; - - mag = ufsmagic(ufssb); - if (mag == UFS_SUPER_MAGIC_LE || mag == UFS_SUPER_MAGIC_BE) - type = "ufs"; - } - - if (!type) { - /* block 8 */ - if (lseek(fd, REISERFS_OLD_DISK_OFFSET_IN_BYTES, SEEK_SET) != - REISERFS_OLD_DISK_OFFSET_IN_BYTES - || read(fd, (char *) &reiserfssb, sizeof(reiserfssb)) != - sizeof(reiserfssb)) - goto io_error; - if (reiserfs_magic_version(reiserfssb.s_magic)) - type = "reiserfs"; - } - - if (!type) { - /* block 8 */ - if (lseek(fd, 0x2000, SEEK_SET) != 0x2000 - || read(fd, (char *) &hpfssb, sizeof(hpfssb)) != sizeof(hpfssb)) - goto io_error; - - if (hpfsmagic(hpfssb) == HPFS_SUPER_MAGIC) - type = "hpfs"; - } - - if (!type) { - /* block 32 */ - if (lseek(fd, JFS_SUPER1_OFF, SEEK_SET) != JFS_SUPER1_OFF - || read(fd, (char *) &jfssb, sizeof(jfssb)) != sizeof(jfssb)) - goto io_error; - if (!strncmp(jfssb.s_magic, JFS_MAGIC, 4)) - type = "jfs"; - } - - if (!type) { - /* block 32 */ - try_iso9660: - if (lseek(fd, 0x8000, SEEK_SET) != 0x8000 - || read(fd, (char *) &isosb, sizeof(isosb)) != sizeof(isosb)) - goto io_error; - - if (strncmp(isosb.hs.id, HS_STANDARD_ID, sizeof(isosb.hs.id)) == 0) { - /* "CDROM" */ - type = "iso9660"; - } else if (strncmp(isosb.iso.id, ISO_STANDARD_ID, - sizeof(isosb.iso.id)) == 0) { - /* CD001 */ - type = "iso9660"; - if (is_really_udf(fd)) - type = "udf"; - } else if (may_be_udf(isosb.iso.id)) - type = "udf"; - } - - if (!type) { - /* block 64 */ - if (lseek(fd, REISERFS_DISK_OFFSET_IN_BYTES, SEEK_SET) != - REISERFS_DISK_OFFSET_IN_BYTES - || read(fd, (char *) &reiserfssb, sizeof(reiserfssb)) != - sizeof(reiserfssb)) - goto io_error; - if (reiserfs_magic_version(reiserfssb.s_magic)) - type = "reiserfs"; - } - - if (!type) { - int blksize, blkoff; - - for (blksize = OCFS2_MIN_BLOCKSIZE; - blksize <= OCFS2_MAX_BLOCKSIZE; - blksize <<= 1) { - blkoff = blksize * OCFS2_SUPER_BLOCK_BLKNO; - if (lseek(fd, blkoff, SEEK_SET) != blkoff - || read(fd, (char *) &osb, sizeof(osb)) != sizeof(osb)) - goto io_error; - if (strncmp(osb.signature, OCFS2_SUPER_BLOCK_SIGNATURE, - sizeof(OCFS2_SUPER_BLOCK_SIGNATURE)) == 0) - type = "ocfs2"; - } - } - - if (!type) { - /* perhaps the user tries to mount the swap space - on a new disk; warn her before she does mke2fs on it */ - int pagesize = getpagesize(); - int rd; - char buf[32768]; - - rd = pagesize; - if (rd < 8192) - rd = 8192; - if (rd > sizeof(buf)) - rd = sizeof(buf); - if (lseek(fd, 0, SEEK_SET) != 0 - || read(fd, buf, rd) != rd) - goto io_error; - if (may_be_swap(buf+pagesize) || - may_be_swap(buf+4096) || may_be_swap(buf+8192)) - type = "swap"; - } - - close (fd); - return(type); - -io_error: - if (errno) - perror(device); - else - fprintf(stderr, _("mount: error while guessing filesystem type\n")); - close(fd); - return 0; -} - -#endif static struct tried { struct tried *next; diff --git a/mount/swapon.c b/mount/swapon.c index c929a5af..64fe3503 100644 --- a/mount/swapon.c +++ b/mount/swapon.c @@ -15,7 +15,6 @@ #include "swap_constants.h" #include "nls.h" #include "fsprobe.h" -#include "mount_by_label.h" #include "realpath.h" #define streq(s, t) (strcmp ((s), (t)) == 0) -- 2.39.5