}
}
-int sysfs_open(int devnum, char *devname, char *attr)
+int sysfs_open(char *devnm, char *devname, char *attr)
{
char fname[50];
int fd;
- char *mdname = devnum2devname(devnum);
- if (!mdname)
- return -1;
-
- sprintf(fname, "/sys/block/%s/md/", mdname);
+ sprintf(fname, "/sys/block/%s/md/", devnm);
if (devname) {
strcat(fname, devname);
strcat(fname, "/");
fd = open(fname, O_RDWR);
if (fd < 0 && errno == EACCES)
fd = open(fname, O_RDONLY);
- free(mdname);
return fd;
}
-void sysfs_init(struct mdinfo *mdi, int fd, int devnum)
+void sysfs_init(struct mdinfo *mdi, int fd, char *devnm)
{
mdi->sys_name[0] = 0;
if (fd >= 0) {
mdu_version_t vers;
if (ioctl(fd, RAID_VERSION, &vers) != 0)
return;
- devnum = fd2devnum(fd);
+ devnm = fd2devnm(fd);
}
- if (devnum == NoMdDev)
+ if (devnm == NULL)
return;
- fmt_devname(mdi->sys_name, devnum);
+ strcpy(mdi->sys_name, devnm);
}
-struct mdinfo *sysfs_read(int fd, int devnum, unsigned long options)
+struct mdinfo *sysfs_read(int fd, char *devnm, unsigned long options)
{
char fname[PATH_MAX];
char buf[PATH_MAX];
DIR *dir = NULL;
struct dirent *de;
- sra = malloc(sizeof(*sra));
- if (sra == NULL)
- return sra;
- memset(sra, 0, sizeof(*sra));
- sysfs_init(sra, fd, devnum);
+ sra = xcalloc(1, sizeof(*sra));
+ sysfs_init(sra, fd, devnm);
if (sra->sys_name[0] == 0) {
free(sra);
return NULL;
if (options & GET_CACHE) {
strcpy(base, "stripe_cache_size");
if (load_sys(fname, buf))
- goto abort;
- sra->cache_size = strtoul(buf, NULL, 0);
+ /* Probably level doesn't support it */
+ sra->cache_size = 0;
+ else
+ sra->cache_size = strtoul(buf, NULL, 0);
}
if (options & GET_MISMATCH) {
strcpy(base, "mismatch_cnt");
msec = (msec * 1000) / scale;
sra->safe_mode_delay = msec;
}
+ if (options & GET_BITMAP_LOCATION) {
+ strcpy(base, "bitmap/location");
+ if (load_sys(fname, buf))
+ goto abort;
+ if (strncmp(buf, "file", 4) == 0)
+ sra->bitmap_offset = 1;
+ else if (strncmp(buf, "none", 4) == 0)
+ sra->bitmap_offset = 0;
+ else if (buf[0] == '+')
+ sra->bitmap_offset = strtol(buf+1, NULL, 10);
+ else
+ goto abort;
+ }
if (! (options & GET_DEVS))
return sra;
dbase = base + strlen(base);
*dbase++ = '/';
- dev = malloc(sizeof(*dev));
- if (!dev)
- goto abort;
+ dev = xmalloc(sizeof(*dev));
/* Always get slot, major, minor */
strcpy(dbase, "slot");
free(dev);
continue;
}
+ sra->array.nr_disks++;
sscanf(buf, "%d:%d", &dev->disk.major, &dev->disk.minor);
/* special case check for block devices that can go 'offline' */
if (load_sys(fname, buf))
goto abort;
dev->data_offset = strtoull(buf, NULL, 0);
+ strcpy(dbase, "new_offset");
+ if (load_sys(fname, buf) == 0)
+ dev->new_data_offset = strtoull(buf, NULL, 0);
+ else
+ dev->new_data_offset = dev->data_offset;
}
if (options & GET_SIZE) {
strcpy(dbase, "size");
return 0;
n = read(fd, fname, sizeof(fname));
close(fd);
- if (n == sizeof(fname))
+ if (n < 0 || n == sizeof(fname))
return 0;
fname[n] = 0;
return strtoull(fname, NULL, 10) * 2;
return sysfs_set_str(sra, dev, name, valstr);
}
+int sysfs_set_num_signed(struct mdinfo *sra, struct mdinfo *dev,
+ char *name, long long val)
+{
+ char valstr[50];
+ sprintf(valstr, "%lli", val);
+ return sysfs_set_str(sra, dev, name, valstr);
+}
+
int sysfs_uevent(struct mdinfo *sra, char *event)
{
char fname[50];
return -1;
n = write(fd, event, strlen(event));
close(fd);
+ if (n != (int)strlen(event)) {
+ dprintf(Name ": failed to write '%s' to '%s' (%s)\n",
+ event, fname, strerror(errno));
+ return -1;
+ }
return 0;
}
lseek(fd, 0, 0);
n = read(fd, buf, sizeof(buf));
if (n <= 0)
- return -1;
+ return -2;
buf[n] = 0;
*val = strtoull(buf, &ep, 0);
if (ep == buf || (*ep != 0 && *ep != '\n' && *ep != ' '))
ver[0] = 0;
if (info->array.major_version == -1 &&
info->array.minor_version == -2) {
+ char buf[1024];
+
strcat(strcpy(ver, "external:"), info->text_version);
+ /* meta version might already be set if we are setting
+ * new geometry for a reshape. In that case we don't
+ * want to over-write the 'readonly' flag that is
+ * stored in the metadata version. So read the current
+ * version first, and preserve the flag
+ */
+ if (sysfs_get_str(info, NULL, "metadata_version",
+ buf, 1024) > 0)
+ if (strlen(buf) >= 9 && buf[9] == '-')
+ ver[9] = '-';
+
if ((vers % 100) < 2 ||
sysfs_set_str(info, NULL, "metadata_version",
ver) < 0) {
- fprintf(stderr, Name ": This kernel does not "
+ pr_err("This kernel does not "
"support external metadata.\n");
return 1;
}
rc = sysfs_set_num(info, NULL, "array_size",
info->custom_array_size/2);
if (rc && errno == ENOENT) {
- fprintf(stderr, Name ": This kernel does not "
+ pr_err("This kernel does not "
"have the md/array_size attribute, "
"the array may be larger than expected\n");
rc = 0;
return rv;
memset(nm, 0, sizeof(nm));
- sprintf(dv, "/sys/dev/block/%d:%d", sd->disk.major, sd->disk.minor);
- rv = readlink(dv, nm, sizeof(nm));
- if (rv <= 0)
- return -1;
- nm[rv] = '\0';
- dname = strrchr(nm, '/');
- if (dname) dname++;
+ dname = devid2devnm(makedev(sd->disk.major, sd->disk.minor));
strcpy(sd->sys_name, "dev-");
strcpy(sd->sys_name+4, dname);
/* from an open block device, try to retrieve it scsi_id */
struct stat st;
char path[256];
- char *c1, *c2;
DIR *dir;
struct dirent *de;
+ int host, bus, target, lun;
if (fstat(fd, &st))
return 1;
if (!dir)
return 1;
- de = readdir(dir);
- while (de) {
- if (strchr(de->d_name, ':'))
+ for (de = readdir(dir); de; de = readdir(dir)) {
+ int count;
+
+ if (de->d_type != DT_DIR)
+ continue;
+
+ count = sscanf(de->d_name, "%d:%d:%d:%d", &host, &bus, &target, &lun);
+ if (count == 4)
break;
- de = readdir(dir);
}
closedir(dir);
if (!de)
return 1;
- c1 = de->d_name;
- c2 = strchr(c1, ':');
- *c2 = '\0';
- *id = strtol(c1, NULL, 10) << 24; /* host */
- c1 = c2 + 1;
- c2 = strchr(c1, ':');
- *c2 = '\0';
- *id |= strtol(c1, NULL, 10) << 16; /* bus */
- c1 = c2 + 1;
- c2 = strchr(c1, ':');
- *c2 = '\0';
- *id |= strtol(c1, NULL, 10) << 8; /* target */
- c1 = c2 + 1;
- *id |= strtol(c1, NULL, 10); /* lun */
-
+ *id = (host << 24) | (bus << 16) | (target << 8) | (lun << 0);
return 0;
}
-int sysfs_unique_holder(int devnum, long rdev)
+int sysfs_unique_holder(char *devnm, long rdev)
{
- /* Check that devnum is a holder of rdev,
+ /* Check that devnm is a holder of rdev,
* and is the only holder.
* we should be locked against races by
- * an O_EXCL on devnum
+ * an O_EXCL on devnm
+ * Return values:
+ * 0 - not unique, not even a holder
+ * 1 - unique, this is the only holder.
+ * 2/3 - not unique, there is another holder
+ * -1 - error, cannot find the holders
*/
DIR *dir;
struct dirent *de;
char dirname[100];
char l;
- int found = 0;
+ int ret = 0;
sprintf(dirname, "/sys/dev/block/%d:%d/holders",
major(rdev), minor(rdev));
dir = opendir(dirname);
- errno = ENOENT;
if (!dir)
- return 0;
+ return -1;
l = strlen(dirname);
while ((de = readdir(dir)) != NULL) {
- char buf[10];
+ char buf[100];
+ char *sl;
int n;
- int mj, mn;
- char c;
- int fd;
if (de->d_ino == 0)
continue;
continue;
strcpy(dirname+l, "/");
strcat(dirname+l, de->d_name);
- strcat(dirname+l, "/dev");
- fd = open(dirname, O_RDONLY);
- if (fd < 0) {
- errno = ENOENT;
- break;
- }
- n = read(fd, buf, sizeof(buf)-1);
- close(fd);
+ n = readlink(dirname, buf, sizeof(buf)-1);
+ if (n <= 0)
+ continue;
buf[n] = 0;
- if (sscanf(buf, "%d:%d%c", &mj, &mn, &c) != 3 ||
- c != '\n') {
- errno = ENOENT;
- break;
- }
- if (mj != MD_MAJOR)
- mn = -1-(mn>>6);
+ sl = strrchr(buf, '/');
+ if (!sl)
+ continue;
+ sl++;
- if (devnum != mn) {
- errno = EEXIST;
- break;
- }
- found = 1;
+ if (strcmp(devnm, sl) == 0)
+ ret |= 1;
+ else
+ ret |= 2;
}
closedir(dir);
- if (de)
- return 0;
- else
- return found;
+ return ret;
}
int sysfs_freeze_array(struct mdinfo *sra)
{
/* Try to freeze resync/rebuild on this array/container.
* Return -1 if the array is busy,
- * return -2 container cannot be frozen,
* return 0 if this kernel doesn't support 'frozen'
* return 1 if it worked.
*/
return 1; /* no sync_action == frozen */
if (sysfs_get_str(sra, NULL, "sync_action", buf, 20) <= 0)
return 0;
- if (strcmp(buf, "idle\n") != 0 &&
- strcmp(buf, "frozen\n") != 0)
+ if (strcmp(buf, "frozen\n") == 0)
+ /* Already frozen */
+ return 0;
+ if (strcmp(buf, "idle\n") != 0)
return -1;
if (sysfs_set_str(sra, NULL, "sync_action", "frozen") < 0)
return 0;
projects / thirdparty / mdadm.git / blobdiff