From 15e5209b8e93eacfcc3440d383d5b05b5e054934 Mon Sep 17 00:00:00 2001 From: Hannes Reinecke Date: Wed, 13 Jul 2005 11:35:51 +0200 Subject: [PATCH] dasd_id: add s390 disk-label prober Signed-off-by: Hannes Reinecke --- extras/dasd_id/Makefile | 52 +++++++ extras/dasd_id/dasd_id.c | 273 +++++++++++++++++++++++++++++++++++++ test/simple-build-check.sh | 1 + 3 files changed, 326 insertions(+) create mode 100644 extras/dasd_id/Makefile create mode 100644 extras/dasd_id/dasd_id.c diff --git a/extras/dasd_id/Makefile b/extras/dasd_id/Makefile new file mode 100644 index 00000000..33bb6965 --- /dev/null +++ b/extras/dasd_id/Makefile @@ -0,0 +1,52 @@ +# Makefile for dasd_id +# +# Copyright (C) 2004 Kay Sievers +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; version 2 of the License. +# + +PROG = dasd_id + +all: $(PROG) + +prefix = +exec_prefix = ${prefix} +etcdir = ${prefix}/etc +sbindir = ${exec_prefix}/sbin +usrbindir = ${exec_prefix}/usr/bin +usrsbindir = ${exec_prefix}/usr/sbin +mandir = ${prefix}/usr/share/man +devddir = ${etcdir}/dev.d/default +configdir = ${etcdir}/udev/ +initdir = ${etcdir}/init.d/ +srcdir = . + +INSTALL = /usr/bin/install -c +INSTALL_PROGRAM = ${INSTALL} +INSTALL_DATA = ${INSTALL} -m 644 +INSTALL_SCRIPT = ${INSTALL_PROGRAM} + +CFLAGS+=-D_FILE_OFFSET_BITS=64 + +OBJS = dasd_id.o ../../udev.a + +$(OBJS): $(HEADERS) + +.c.o: + $(QUIET) $(CC) $(CFLAGS) -c -o $@ $< + +$(PROG): $(OBJS) $(HEADERS) + $(QUIET) $(LD) $(LDFLAGS) -o $(PROG) $(OBJS) $(LIB_OBJS) + +clean: + rm -f $(PROG) $(OBJS) + +spotless: clean + +install: all + $(INSTALL_PROGRAM) $(PROG) $(DESTDIR)$(sbindir)/$(PROG) + +uninstall: + - rm $(DESTDIR)$(sbindir)/$(PROG) diff --git a/extras/dasd_id/dasd_id.c b/extras/dasd_id/dasd_id.c new file mode 100644 index 00000000..5c2143f4 --- /dev/null +++ b/extras/dasd_id/dasd_id.c @@ -0,0 +1,273 @@ +/* + * dasdlabel - read label from s390 block device + * + * Copyright (C) 2004 Arnd Bergmann + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation version 2 of the License. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 675 Mass Ave, Cambridge, MA 02139, USA. + * + */ + +#ifndef _GNU_SOURCE +#define _GNU_SOURCE 1 +#endif + +#ifdef HAVE_CONFIG_H +# include +#endif + +#include +#include +#include +#include +#include +#include +#include +#include + +#include "../../logging.h" +#include "../../udev_utils.h" + +#ifdef USE_LOG +void log_message(int priority, const char *format, ...) +{ + va_list args; + static int udev_log = -1; + + if (udev_log == -1) { + const char *value; + + value = getenv("UDEV_LOG"); + if (value) + udev_log = log_priority(value); + else + udev_log = LOG_ERR; + } + + if (priority > udev_log) + return; + + va_start(args, format); + vsyslog(priority, format, args); + va_end(args); +} +#endif + +/* + * Only compile this on S/390. Doesn't make any sense + * for other architectures. + */ + +static unsigned char EBCtoASC[256] = +{ +/* 0x00 NUL SOH STX ETX *SEL HT *RNL DEL */ + 0x00, 0x01, 0x02, 0x03, 0x07, 0x09, 0x07, 0x7F, +/* 0x08 -GE -SPS -RPT VT FF CR SO SI */ + 0x07, 0x07, 0x07, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, +/* 0x10 DLE DC1 DC2 DC3 -RES -NL BS -POC + -ENP ->LF */ + 0x10, 0x11, 0x12, 0x13, 0x07, 0x0A, 0x08, 0x07, +/* 0x18 CAN EM -UBS -CU1 -IFS -IGS -IRS -ITB + -IUS */ + 0x18, 0x19, 0x07, 0x07, 0x07, 0x07, 0x07, 0x07, +/* 0x20 -DS -SOS FS -WUS -BYP LF ETB ESC + -INP */ + 0x07, 0x07, 0x1C, 0x07, 0x07, 0x0A, 0x17, 0x1B, +/* 0x28 -SA -SFE -SM -CSP -MFA ENQ ACK BEL + -SW */ + 0x07, 0x07, 0x07, 0x07, 0x07, 0x05, 0x06, 0x07, +/* 0x30 ---- ---- SYN -IR -PP -TRN -NBS EOT */ + 0x07, 0x07, 0x16, 0x07, 0x07, 0x07, 0x07, 0x04, +/* 0x38 -SBS -IT -RFF -CU3 DC4 NAK ---- SUB */ + 0x07, 0x07, 0x07, 0x07, 0x14, 0x15, 0x07, 0x1A, +/* 0x40 SP RSP ä ---- */ + 0x20, 0xFF, 0x83, 0x84, 0x85, 0xA0, 0x07, 0x86, +/* 0x48 . < ( + | */ + 0x87, 0xA4, 0x9B, 0x2E, 0x3C, 0x28, 0x2B, 0x7C, +/* 0x50 & ---- */ + 0x26, 0x82, 0x88, 0x89, 0x8A, 0xA1, 0x8C, 0x07, +/* 0x58 ß ! $ * ) ; */ + 0x8D, 0xE1, 0x21, 0x24, 0x2A, 0x29, 0x3B, 0xAA, +/* 0x60 - / ---- Ä ---- ---- ---- */ + 0x2D, 0x2F, 0x07, 0x8E, 0x07, 0x07, 0x07, 0x8F, +/* 0x68 ---- , % _ > ? */ + 0x80, 0xA5, 0x07, 0x2C, 0x25, 0x5F, 0x3E, 0x3F, +/* 0x70 --- ---- ---- ---- ---- ---- ---- */ + 0x07, 0x90, 0x07, 0x07, 0x07, 0x07, 0x07, 0x07, +/* 0x78 * ` : # @ ' = " */ + 0x70, 0x60, 0x3A, 0x23, 0x40, 0x27, 0x3D, 0x22, +/* 0x80 * a b c d e f g */ + 0x07, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, +/* 0x88 h i ---- ---- ---- */ + 0x68, 0x69, 0xAE, 0xAF, 0x07, 0x07, 0x07, 0xF1, +/* 0x90 ° j k l m n o p */ + 0xF8, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E, 0x6F, 0x70, +/* 0x98 q r ---- ---- */ + 0x71, 0x72, 0xA6, 0xA7, 0x91, 0x07, 0x92, 0x07, +/* 0xA0 ~ s t u v w x */ + 0xE6, 0x7E, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, +/* 0xA8 y z ---- ---- ---- ---- */ + 0x79, 0x7A, 0xAD, 0xAB, 0x07, 0x07, 0x07, 0x07, +/* 0xB0 ^ ---- § ---- */ + 0x5E, 0x9C, 0x9D, 0xFA, 0x07, 0x07, 0x07, 0xAC, +/* 0xB8 ---- [ ] ---- ---- ---- ---- */ + 0xAB, 0x07, 0x5B, 0x5D, 0x07, 0x07, 0x07, 0x07, +/* 0xC0 { A B C D E F G */ + 0x7B, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, +/* 0xC8 H I ---- ö ---- */ + 0x48, 0x49, 0x07, 0x93, 0x94, 0x95, 0xA2, 0x07, +/* 0xD0 } J K L M N O P */ + 0x7D, 0x4A, 0x4B, 0x4C, 0x4D, 0x4E, 0x4F, 0x50, +/* 0xD8 Q R ---- ü */ + 0x51, 0x52, 0x07, 0x96, 0x81, 0x97, 0xA3, 0x98, +/* 0xE0 \ S T U V W X */ + 0x5C, 0xF6, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, +/* 0xE8 Y Z ---- Ö ---- ---- ---- */ + 0x59, 0x5A, 0xFD, 0x07, 0x99, 0x07, 0x07, 0x07, +/* 0xF0 0 1 2 3 4 5 6 7 */ + 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, +/* 0xF8 8 9 ---- ---- Ü ---- ---- ---- */ + 0x38, 0x39, 0x07, 0x07, 0x9A, 0x07, 0x07, 0x07 +}; + +static void vtoc_ebcdic_dec (const unsigned char *source, char *target, int l) +{ + int i; + + for (i = 0; i < l; i++) + target[i]=(char)EBCtoASC[(unsigned char)(source[i])]; +} + +/* + * struct dasd_information_t + * represents any data about the data, which is visible to userspace + */ +typedef struct dasd_information_t { + unsigned int devno; /* S/390 devno */ + unsigned int real_devno; /* for aliases */ + unsigned int schid; /* S/390 subchannel identifier */ + unsigned int cu_type : 16; /* from SenseID */ + unsigned int cu_model : 8; /* from SenseID */ + unsigned int dev_type : 16; /* from SenseID */ + unsigned int dev_model : 8; /* from SenseID */ + unsigned int open_count; + unsigned int req_queue_len; + unsigned int chanq_len; /* length of chanq */ + char type[4]; /* from discipline.name, 'none' for unknown */ + unsigned int status; /* current device level */ + unsigned int label_block; /* where to find the VOLSER */ + unsigned int FBA_layout; /* fixed block size (like AIXVOL) */ + unsigned int characteristics_size; + unsigned int confdata_size; + char characteristics[64]; /* from read_device_characteristics */ + char configuration_data[256]; /* from read_configuration_data */ +} dasd_information_t; + +#define DASD_IOCTL_LETTER 'D' +#define BIODASDINFO _IOR(DASD_IOCTL_LETTER,1,dasd_information_t) +#define BLKSSZGET _IO(0x12,104) + +unsigned char serial[8]; + +static int dasd_id(int fd) +{ + int blocksize; + dasd_information_t info; + __u8 *data; + __u8 *label_raw; + + if (ioctl(fd, BIODASDINFO, &info) != 0) { + dbg("not a dasd"); + return -1; + } + + if (ioctl(fd, BLKSSZGET, &blocksize) != 0) { + err("failed to get blocksize"); + return -1; + } + + if (lseek(fd,info.label_block * blocksize, SEEK_SET) == -1) { + err("seek failed on dasd"); + return -1; + } + + data = malloc(blocksize); + if (data == NULL) + return -1; + + if (read(fd, data, blocksize) == -1) { + err("read disklabel failed"); + free(data); + return -1; + } + + if ((!info.FBA_layout) && (!strcmp(info.type, "ECKD"))) + label_raw = &data[8]; + else + label_raw = &data[4]; + serial[6] = '\0'; + + vtoc_ebcdic_dec(label_raw, serial, 6); + free(data); + + return 0; + } + +int main(int argc, char *argv[]) +{ + const char *node = NULL; + int i; + int export = 0; + int fd; + int rc = 0; + + logging_init("dasd_id"); + + for (i = 1; i < argc; i++) { + char *arg = argv[i]; + + if (strcmp(arg, "--export") == 0) { + export = 1; + } else + node = arg; + } + if (!node) { + err("no node specified"); + rc = 1; + goto exit; + } + + fd = open(node, O_RDONLY); + if (fd < 0) { + err("unable to open '%s'", node); + rc = 1; + goto exit; + } + + if (dasd_id(fd) < 0) { + err("dasd_id failed: %s", strerror(errno)); + rc = 1; + } + + if (export) { + printf("ID_TYPE=disk\n"); + printf("ID_SERIAL=%s\n",serial); + } else + printf("%s\n", serial); + + close(fd); +exit: + logging_close(); + return rc; +} + diff --git a/test/simple-build-check.sh b/test/simple-build-check.sh index c5b429d9..7e9a940f 100755 --- a/test/simple-build-check.sh +++ b/test/simple-build-check.sh @@ -6,6 +6,7 @@ EXTRAS="\ extras/ata_id \ extras/volume_id \ extras/usb_id \ + extras/dasd_id \ extras/run_directory" [ -z "$KERNEL_DIR" ] && KERNEL_DIR=/lib/modules/`uname -r`/build -- 2.39.5