* 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
#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);
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:
}
}
- 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);
}
~ianmdlvl / elogind.git / blobdiff