#include "mdadm.h"
#include <dirent.h>
+#include <ctype.h>
int load_sys(char *path, char *buf)
{
return fd;
}
+void sysfs_init(struct mdinfo *mdi, int fd, int devnum)
+{
+ if (fd >= 0) {
+ struct stat stb;
+ mdu_version_t vers;
+ if (fstat(fd, &stb))
+ return;
+ if (ioctl(fd, RAID_VERSION, &vers) != 0)
+ return;
+ if (major(stb.st_rdev)==9)
+ sprintf(mdi->sys_name, "md%d", (int)minor(stb.st_rdev));
+ else
+ sprintf(mdi->sys_name, "md_d%d",
+ (int)minor(stb.st_rdev)>>MdpMinorShift);
+ } else {
+ if (devnum >= 0)
+ sprintf(mdi->sys_name, "md%d", devnum);
+ else
+ sprintf(mdi->sys_name, "md_d%d",
+ -1-devnum);
+ }
+}
+
struct mdinfo *sysfs_read(int fd, int devnum, unsigned long options)
{
/* Longest possible name in sysfs, mounted at /sys, is
sra = malloc(sizeof(*sra));
if (sra == NULL)
return sra;
- sra->next = NULL;
+ memset(sra, 0, sizeof(*sra));
+ sysfs_init(sra, fd, devnum);
- if (fd >= 0) {
- struct stat stb;
- mdu_version_t vers;
- if (fstat(fd, &stb)) return NULL;
- if (ioctl(fd, RAID_VERSION, &vers) != 0)
- return NULL;
- if (major(stb.st_rdev)==9)
- sprintf(sra->sys_name, "md%d", (int)minor(stb.st_rdev));
- else
- sprintf(sra->sys_name, "md_d%d",
- (int)minor(stb.st_rdev)>>MdpMinorShift);
- } else {
- if (devnum >= 0)
- sprintf(sra->sys_name, "md%d", devnum);
- else
- sprintf(sra->sys_name, "md_d%d",
- -1-devnum);
- }
sprintf(fname, "/sys/block/%s/md/", sra->sys_name);
base = fname + strlen(fname);
goto abort;
sra->array.raid_disks = strtoul(buf, NULL, 0);
}
+ if (options & GET_DEGRADED) {
+ strcpy(base, "degraded");
+ if (load_sys(fname, buf))
+ goto abort;
+ sra->array.failed_disks = strtoul(buf, NULL, 0);
+ }
if (options & GET_COMPONENT) {
strcpy(base, "component_size");
if (load_sys(fname, buf))
goto abort;
sra->mismatch_cnt = strtoul(buf, NULL, 0);
}
+ if (options & GET_SAFEMODE) {
+ int scale = 1;
+ int dot = 0;
+ int i;
+ unsigned long msec;
+ size_t len;
+
+ strcpy(base, "safe_mode_delay");
+ if (load_sys(fname, buf))
+ goto abort;
+
+ /* remove a period, and count digits after it */
+ len = strlen(buf);
+ for (i = 0; i < len; i++) {
+ if (dot) {
+ if (isdigit(buf[i])) {
+ buf[i-1] = buf[i];
+ scale *= 10;
+ }
+ buf[i] = 0;
+ } else if (buf[i] == '.') {
+ dot=1;
+ buf[i] = 0;
+ }
+ }
+ msec = strtoul(buf, NULL, 10);
+ msec = (msec * 1000) / scale;
+ sra->safe_mode_delay = msec;
+ }
if (! (options & GET_DEVS))
return sra;
dev = malloc(sizeof(*dev));
if (!dev)
goto abort;
- dev->next = sra->devs;
- sra->devs = dev;
- strcpy(dev->sys_name, de->d_name);
/* Always get slot, major, minor */
strcpy(dbase, "slot");
- if (load_sys(fname, buf))
- goto abort;
+ if (load_sys(fname, buf)) {
+ /* hmm... unable to read 'slot' maybe the device
+ * is going away?
+ */
+ strcpy(dbase, "block");
+ if (readlink(fname, buf, sizeof(buf)) < 0 &&
+ errno != ENAMETOOLONG) {
+ /* ...yup device is gone */
+ free(dev);
+ continue;
+ } else {
+ /* slot is unreadable but 'block' link
+ * still intact... something bad is happening
+ * so abort
+ */
+ free(dev);
+ goto abort;
+ }
+
+ }
+ dev->next = sra->devs;
+ sra->devs = dev;
+
+ strcpy(dev->sys_name, de->d_name);
dev->disk.raid_disk = strtoul(buf, &ep, 10);
if (*ep) dev->disk.raid_disk = -1;
return NULL;
}
+int sysfs_attr_match(const char *attr, const char *str)
+{
+ /* See if attr, read from a sysfs file, matches
+ * str. They must either be the same, or attr can
+ * have a trailing newline or comma
+ */
+ while (*attr && *str && *attr == *str) {
+ attr++;
+ str++;
+ }
+
+ if (*str || (*attr && *attr != ',' && *attr != '\n'))
+ return 0;
+ return 1;
+}
+
+int sysfs_match_word(const char *word, char **list)
+{
+ int n;
+ for (n=0; list[n]; n++)
+ if (sysfs_attr_match(word, list[n]))
+ break;
+ return n;
+}
+
unsigned long long get_component_size(int fd)
{
/* Find out the component size of the array.
return 0;
}
-int sysfs_set_array(struct mdinfo *sra,
- struct mdinfo *info)
+int sysfs_set_safemode(struct mdinfo *sra, unsigned long ms)
{
- int rv = 0;
- sra->array = info->array;
+ unsigned long sec;
+ unsigned long msec;
+ char delay[30];
+ sec = ms / 1000;
+ msec = ms - (sec * 1000);
+
+ sprintf(delay, "%ld.%ld", sec, msec);
+ return sysfs_set_str(sra, NULL, "safe_mode_delay", delay);
+}
+
+int sysfs_set_array(struct mdinfo *info, int vers)
+{
+ int rv = 0;
+ char ver[100];
+
+ ver[0] = 0;
+ if (info->array.major_version == -1 &&
+ info->array.minor_version == -2) {
+ strcat(strcpy(ver, "external:"), info->text_version);
+
+ if ((vers % 100) < 2 ||
+ sysfs_set_str(info, NULL, "metadata_version",
+ ver) < 0) {
+ fprintf(stderr, Name ": This kernel does not "
+ "support external metadata.\n");
+ return 1;
+ }
+ }
if (info->array.level < 0)
return 0; /* FIXME */
- rv |= sysfs_set_str(sra, NULL, "level",
+ rv |= sysfs_set_str(info, NULL, "level",
map_num(pers, info->array.level));
- rv |= sysfs_set_num(sra, NULL, "raid_disks", info->array.raid_disks);
- rv |= sysfs_set_num(sra, NULL, "chunk_size", info->array.chunk_size);
- rv |= sysfs_set_num(sra, NULL, "layout", info->array.layout);
- rv |= sysfs_set_num(sra, NULL, "component_size", info->component_size/2);
- rv |= sysfs_set_num(sra, NULL, "resync_start", info->resync_start);
- sra->array = info->array;
+ rv |= sysfs_set_num(info, NULL, "raid_disks", info->array.raid_disks);
+ rv |= sysfs_set_num(info, NULL, "chunk_size", info->array.chunk_size);
+ rv |= sysfs_set_num(info, NULL, "layout", info->array.layout);
+ rv |= sysfs_set_num(info, NULL, "component_size", info->component_size/2);
+ if (info->array.level > 0)
+ rv |= sysfs_set_num(info, NULL, "resync_start", info->resync_start);
return rv;
}
{
char dv[100];
char nm[100];
- struct mdinfo *sd2;
char *dname;
int rv;
rv |= sysfs_set_num(sra, sd, "slot", sd->disk.raid_disk);
// rv |= sysfs_set_str(sra, sd, "state", "in_sync");
}
- if (! rv) {
- sd2 = malloc(sizeof(*sd2));
- *sd2 = *sd;
- sd2->next = sra->devs;
- sra->devs = sd2;
- }
return rv;
}
+#if 0
int sysfs_disk_to_sg(int fd)
{
/* from an open block device, try find and open its corresponding
return -1;
}
+#endif
int sysfs_disk_to_scsi_id(int fd, __u32 *id)
{
projects / thirdparty / mdadm.git / blobdiff