diff options
| -rw-r--r-- | extras/volume_id/Makefile | 17 | ||||
| -rw-r--r-- | extras/volume_id/README | 49 | ||||
| -rw-r--r-- | extras/volume_id/dasdlabel.c | 178 | ||||
| -rw-r--r-- | extras/volume_id/dasdlabel.h | 26 | ||||
| -rw-r--r-- | extras/volume_id/s390-dasd.rules | 7 | ||||
| -rw-r--r-- | extras/volume_id/udev_volume_id.c | 206 | ||||
| -rw-r--r-- | extras/volume_id/volume_id.c | 5 |
7 files changed, 437 insertions, 51 deletions
diff --git a/extras/volume_id/Makefile b/extras/volume_id/Makefile index 6a3d2866c4..307fdc2f16 100644 --- a/extras/volume_id/Makefile +++ b/extras/volume_id/Makefile @@ -1,6 +1,6 @@ # Makefile for udev_volume_id # -# Copyright (C) 2004 Kay Sievers <kay@vrfy.org> +# Copyright (C) 2004 Kay Sievers <kay.sievers@vrfy.org> # # 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 @@ -29,8 +29,19 @@ INSTALL_DATA = ${INSTALL} -m 644 INSTALL_SCRIPT = ${INSTALL_PROGRAM} override CFLAGS+=-Wall -fno-builtin -OBJS = volume_id.o udev_volume_id.o -HEADERS = volume_id.h + +SYSFS = ../../libsysfs/sysfs_bus.o \ + ../../libsysfs/sysfs_class.o \ + ../../libsysfs/sysfs_device.o \ + ../../libsysfs/sysfs_dir.o \ + ../../libsysfs/sysfs_driver.o \ + ../../libsysfs/sysfs_utils.o \ + ../../libsysfs/dlist.o + + + +OBJS = volume_id.o udev_volume_id.o dasdlabel.o $(SYSFS) +HEADERS = volume_id.h dasdlabel.h $(OBJS): $(HEADERS) diff --git a/extras/volume_id/README b/extras/volume_id/README new file mode 100644 index 0000000000..9d881a1a05 --- /dev/null +++ b/extras/volume_id/README @@ -0,0 +1,49 @@ + +udev_volume_id - partition, filesystem, disklabel reader + +This program is normally called from a udev rule, to provide udev with the +name, uuid or the filesystem type of a partition to name a device node. +udev_volume_id opens the blockdevice specified by the environment variable +DEVPATH and searches for a filesystem superblock to read the label. The +following commandline switches are supported to specify what udev_volume_id +should print to stdout: + + no option prints all values + -h prints help text + -l prints the label of the partition + -u prints the uuid of the partition + -d read disk instead of partition + +If -d is specified udev_volume_id tries to read the label from the main +block device where the partition belongs to. For now this is only useful +for s390 dasd labels. + +udev_volume_id will only return successful if the string asked for, is not +empty. All trailing whitespace will be removed, spaces replaced by underscore +and slashes ignored. + +The following rule will create a symlink named with the label string: + KERNEL="[hs]d*", PROGRAM="/sbin/udev_volume_id -l", SYMLINK="%c" + +If no label is found udev_volume_id exits with nonzero and the rule will be +ignored. + +To give it a try, you may call it on the commandline: + + [root@pim udev.kay]# DEVPATH=/block/hda/hda3 extras/volume_id/udev_volume_id + T:ext3 + L:Music Store + N:Music_Store + U:d2da42b5-bbd9-44eb-a72c-cc4542fcb71e + + [root@pim udev.kay]# DEVPATH=/block/hda/hda3 extras/volume_id/udev_volume_id -l + Music_Store + + [root@pim udev.kay]# DEVPATH=/block/hda/hda1 extras/volume_id/udev_volume_id -t + swap + + +Please send any comment/questions/concerns to me or: + linux-hotplug-devel@lists.sourceforge.net + +Kay Sievers <kay.sievers@vrfy.org> diff --git a/extras/volume_id/dasdlabel.c b/extras/volume_id/dasdlabel.c new file mode 100644 index 0000000000..cbbe88179d --- /dev/null +++ b/extras/volume_id/dasdlabel.c @@ -0,0 +1,178 @@ +/* + * dasdlabel - read label from s390 block device + * + * Copyright (C) 2004 Arnd Bergmann <arnd@arndb.de> + * + * 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. + * + */ + + +#include <stdlib.h> +#include <stdio.h> +#include <string.h> +#include <unistd.h> +#include <fcntl.h> +#include <sys/ioctl.h> + +#include "dasdlabel.h" + +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 (unsigned char *source, unsigned char *target, int l) +{ + int i; + + for (i = 0; i < l; i++) + target[i]=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 _IOC_NRBITS 8 +#define _IOC_TYPEBITS 8 +#define _IOC_SIZEBITS 14 +#define _IOC_DIRBITS 2 +#define _IOC_NRMASK ((1 << _IOC_NRBITS)-1) +#define _IOC_TYPEMASK ((1 << _IOC_TYPEBITS)-1) +#define _IOC_SIZEMASK ((1 << _IOC_SIZEBITS)-1) +#define _IOC_DIRMASK ((1 << _IOC_DIRBITS)-1) +#define _IOC_NRSHIFT 0 +#define _IOC_TYPESHIFT (_IOC_NRSHIFT+_IOC_NRBITS) +#define _IOC_SIZESHIFT (_IOC_TYPESHIFT+_IOC_TYPEBITS) +#define _IOC_DIRSHIFT (_IOC_SIZESHIFT+_IOC_SIZEBITS) +#define DASD_IOCTL_LETTER 'D' + +#define BIODASDINFO _IOR(DASD_IOCTL_LETTER,1,dasd_information_t) +#define BLKSSZGET _IO(0x12,104) + +int probe_ibm_partition(int fd, char *out) +{ + int blocksize; + dasd_information_t info; + char name[7] = {0,}; + unsigned char data[16]; + + if (ioctl(fd, BIODASDINFO, (unsigned long)&info) != 0) + return -1; + + if (ioctl(fd, BLKSSZGET, (unsigned long)&blocksize)) + return -1; + + lseek(fd, info.label_block * blocksize, SEEK_SET); + if (read(fd, &data, 16) != 16) + return -1; + + if ((!info.FBA_layout) && (!strcmp(info.type, "ECKD"))) + strncpy(name, data + 8, 6); + else + strncpy(name, data + 4, 6); + + vtoc_ebcdic_dec(name, out, 6); + + return 0; +} diff --git a/extras/volume_id/dasdlabel.h b/extras/volume_id/dasdlabel.h new file mode 100644 index 0000000000..1501d3ff89 --- /dev/null +++ b/extras/volume_id/dasdlabel.h @@ -0,0 +1,26 @@ +/* + * dasdlabel - read label from s390 block device + * + * Copyright (C) 2004 Arnd Bergmann <arnd@arndb.de> + * + * 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 _DASDLABEL_H_ +#define _DASDLABEL_H_ + +extern int probe_ibm_partition(int fd, char *out); + +#endif diff --git a/extras/volume_id/s390-dasd.rules b/extras/volume_id/s390-dasd.rules new file mode 100644 index 0000000000..a870d87e04 --- /dev/null +++ b/extras/volume_id/s390-dasd.rules @@ -0,0 +1,7 @@ +# s390 block devices named by disk label +KERNEL="dasd*[a-z]", PROGRAM="/sbin/udev_volume_id -d -l" RESULT="[0-9A-Z]*", SYMLINK="dasd/%c/disc dasd/%b/disc" +KERNEL="dasd*[0-9]", PROGRAM="/sbin/udev_volume_id -d -l" RESULT="[0-9A-Z]*", SYMLINK="dasd/%c/part%n dasd/%b/part%n" +KERNEL="dasd*[a-z]", SYMLINK="dasd/%b/disc" +KERNEL="dasd*[0-9]", SYMLINK="dasd/%b/part%n" +KERNEL="dcssblk*", NAME="%k", SYMLINK="dcssblk/%b" + diff --git a/extras/volume_id/udev_volume_id.c b/extras/volume_id/udev_volume_id.c index 88779ccd36..18915cb62b 100644 --- a/extras/volume_id/udev_volume_id.c +++ b/extras/volume_id/udev_volume_id.c @@ -4,7 +4,7 @@ * Copyright (C) 2004 Kay Sievers <kay.sievers@vrfy.org> * * sample udev rule for creation of a symlink with the filsystem uuid: - * KERNEL="sd*", PROGRAM="/sbin/udev_volume_id -M%M -m%m -u", SYMLINK="%c" + * KERNEL="sd*", PROGRAM="/sbin/udev_volume_id -u", SYMLINK="%c" * * 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 @@ -24,21 +24,75 @@ #include <stdio.h> #include <stdlib.h> #include <unistd.h> +#include <ctype.h> +#include "../../libsysfs/sysfs/libsysfs.h" +#include "../../udev_lib.h" +#include "../../logging.h" #include "volume_id.h" +#include "dasdlabel.h" -int main(int argc, char *argv[]) +#ifdef LOG +unsigned char logname[LOGNAME_SIZE]; +void log_message(int level, const char *format, ...) +{ + va_list args; + + va_start(args, format); + vsyslog(level, format, args); + va_end(args); +} +#endif + +static struct volume_id *open_classdev(struct sysfs_class_device *class_dev) { struct volume_id *vid; - const char help[] = "usage: udev_volume_id -m<minor> -M<major> [-t|-l|-u]\n"; - int major = -1; - int minor = -1; - char *tail; - static const char short_options[] = "M:m:htlu"; - int option; - char print = '\0'; - int rc; + struct sysfs_attribute *attr; + int major, minor; + + attr = sysfs_get_classdev_attr(class_dev, "dev"); + + if (attr == NULL) { + printf("error reading 'dev' attribute\n"); + return NULL; + } + + if (sscanf(attr->value, "%u:%u", &major, &minor) != 2) { + printf("error getting major/minor number\n"); + return NULL; + } + + vid = volume_id_open_dev_t(makedev(major, minor)); + if (vid == NULL) { + printf("error open volume\n"); + return NULL; + } + + return vid; +} +int main(int argc, char *argv[]) +{ + const char help[] = "usage: udev_volume_id [-t|-l|-u|-d]\n" + " -t filesystem type\n" + " -l filesystem label\n" + " -u filesystem uuid\n" + " -d disk label from main device\n" + "\n"; + static const char short_options[] = "htlud"; + int option; + char sysfs_path[SYSFS_PATH_MAX]; + char dev_path[SYSFS_PATH_MAX]; + struct sysfs_class_device *class_dev = NULL; + struct sysfs_class_device *class_dev_parent = NULL; + struct volume_id *vid = NULL; + char *devpath; + char probe = 'p'; + char print = 'a'; + char dasd_label[7]; + static char name[VOLUME_ID_LABEL_SIZE]; + int len, i, j; + int rc = 1; while (1) { option = getopt(argc, argv, short_options); @@ -46,29 +100,18 @@ int main(int argc, char *argv[]) break; switch (option) { - case 'M': - major = (int) strtoul(optarg, &tail, 10); - if (tail[0] != '\0') { - printf("invalid major\n"); - exit(1); - } - break; - case 'm': - minor = (int) strtoul(optarg, &tail, 10); - if (tail[0] != '\0') { - printf("invalid minor\n"); - exit(1); - } - break; case 't': print = 't'; - break; + continue; case 'l': print = 'l'; - break; + continue; case 'u': print = 'u'; - break; + continue; + case 'd': + probe = 'd'; + continue; case 'h': case '?': default: @@ -77,44 +120,115 @@ int main(int argc, char *argv[]) } } - if (major == -1 || minor == -1) { - printf(help); - exit(1); + devpath = getenv("DEVPATH"); + if (devpath == NULL) { + printf("error DEVPATH empty\n"); + goto exit; } - vid = volume_id_open_dev_t(makedev(major, minor)); - if (vid == NULL) { - printf("error open volume\n"); - exit(1); + if (sysfs_get_mnt_path(sysfs_path, SYSFS_PATH_MAX) != 0) { + printf("error getting sysfs mount path\n"); + goto exit; + } + + strfieldcpy(dev_path, sysfs_path); + strfieldcat(dev_path, devpath); + + class_dev = sysfs_open_class_device_path(dev_path); + if (class_dev == NULL) { + printf("error getting class device\n"); + goto exit; } - rc = volume_id_probe(vid, ALL); - if (rc != 0) { - printf("error probing volume\n"); - exit(1); + switch(probe) { + case 'p' : + /* open block device */ + vid = open_classdev(class_dev); + if (vid == NULL) + goto exit; + if (volume_id_probe(vid, ALL) == 0) + goto print; + break; + case 'd' : + /* if we are on a partition, close it and open main block device */ + class_dev_parent = sysfs_get_classdev_parent(class_dev); + if (class_dev_parent != NULL) { + volume_id_close(vid); + vid = open_classdev(class_dev_parent); + } else { + vid = open_classdev(class_dev_parent); + } + if (vid == NULL) + goto exit; + if (probe_ibm_partition(vid->fd, dasd_label) == 0) { + vid->fs_name = "dasd"; + strncpy(vid->label_string, dasd_label, 6); + vid->label_string[6] = '\0'; + goto print; + } + break; } + printf("unknown volume type\n"); + goto exit; + + +print: + len = strnlen(vid->label_string, VOLUME_ID_LABEL_SIZE); + + /* remove trailing spaces */ + while (len > 0 && isspace(vid->label_string[len-1])) + len--; + name[len] = '\0'; + + /* substitute chars */ + i = 0; + j = 0; + while (j < len) { + switch(vid->label_string[j]) { + case '/' : + break; + case ' ' : + name[i++] = '_'; + break; + default : + name[i++] = vid->label_string[j]; + } + j++; + } + name[i] = '\0'; + switch (print) { case 't': printf("%s\n", vid->fs_name); break; case 'l': - if (vid->label_string[0] == '\0') - exit(2); - printf("%s\n", vid->label_string); + if (name[0] == '\0') { + rc = 2; + goto exit; + } + printf("%s\n", name); break; case 'u': - if (vid->uuid_string[0] == '\0') - exit(2); + if (vid->uuid_string[0] == '\0') { + rc = 2; + goto exit; + } printf("%s\n", vid->uuid_string); break; - default: + case 'a': printf("T:%s\n", vid->fs_name); printf("L:%s\n", vid->label_string); + printf("N:%s\n", name); printf("U:%s\n", vid->uuid_string); } + rc = 0; - volume_id_close(vid); +exit: + if (class_dev != NULL) + sysfs_close_class_device(class_dev); + if (vid != NULL) + volume_id_close(vid); - exit(0); + exit(rc); } diff --git a/extras/volume_id/volume_id.c b/extras/volume_id/volume_id.c index 8eba4b22f2..dcc341c4dd 100644 --- a/extras/volume_id/volume_id.c +++ b/extras/volume_id/volume_id.c @@ -82,7 +82,7 @@ static void set_label_string(struct volume_id *id, char *buf, int count) memcpy(id->label_string, buf, count); /* remove trailing whitespace */ - i = strlen(id->label_string); + i = strnlen(id->label_string, count); while (i--) { if (! isspace(id->label_string[i])) break; @@ -839,10 +839,11 @@ struct volume_id *volume_id_open_dev_t(dev_t devt) char tmp_node[VOLUME_ID_PATH_MAX]; snprintf(tmp_node, VOLUME_ID_PATH_MAX, - "/tmp/volume-%u-%u", major(devt), minor(devt)); + "/tmp/volume-%u-%u-%u", getpid(), major(devt), minor(devt)); tmp_node[VOLUME_ID_PATH_MAX] = '\0'; /* create tempory node to open the block device */ + unlink(tmp_node); if (mknod(tmp_node, (S_IFBLK | 0600), devt) != 0) return NULL; |