return -1;
n = read(fd, buf, 1024);
close(fd);
- if (n <=0 || n >= 1024)
+ if (n <0 || n >= 1024)
return -1;
buf[n] = 0;
if (buf[n-1] == '\n')
}
}
+int sysfs_open(int devnum, char *devname, char *attr)
+{
+ char fname[50];
+ char sys_name[16];
+ int fd;
+ if (devnum >= 0)
+ sprintf(sys_name, "md%d", devnum);
+ else
+ sprintf(sys_name, "md_d%d",
+ -1-devnum);
+
+ sprintf(fname, "/sys/block/%s/md/", sys_name);
+ if (devname) {
+ strcat(fname, devname);
+ strcat(fname, "/");
+ }
+ strcat(fname, attr);
+ fd = open(fname, O_RDWR);
+ if (fd < 0 && errno == -EACCES)
+ fd = open(fname, O_RDONLY);
+ return fd;
+}
+
struct mdinfo *sysfs_read(int fd, int devnum, unsigned long options)
{
/* Longest possible name in sysfs, mounted at /sys, is
char *dbase;
struct mdinfo *sra;
struct mdinfo *dev;
- DIR *dir;
+ DIR *dir = NULL;
struct dirent *de;
sra = malloc(sizeof(*sra));
if (ioctl(fd, RAID_VERSION, &vers) != 0)
return NULL;
if (major(stb.st_rdev)==9)
- sprintf(sra->sys_name, "md%d", minor(stb.st_rdev));
+ sprintf(sra->sys_name, "md%d", (int)minor(stb.st_rdev));
else
sprintf(sra->sys_name, "md_d%d",
- minor(stb.st_rdev)>>MdpMinorShift);
+ (int)minor(stb.st_rdev)>>MdpMinorShift);
} else {
if (devnum >= 0)
sprintf(sra->sys_name, "md%d", devnum);
strcpy(base, "metadata_version");
if (load_sys(fname, buf))
goto abort;
- if (strncmp(buf, "none", 4) == 0)
+ if (strncmp(buf, "none", 4) == 0) {
sra->array.major_version =
sra->array.minor_version = -1;
- else
+ strcpy(sra->text_version, "");
+ } else if (strncmp(buf, "external:", 9) == 0) {
+ sra->array.major_version = -1;
+ sra->array.minor_version = -2;
+ strcpy(sra->text_version, buf+9);
+ } else
sscanf(buf, "%d.%d",
&sra->array.major_version,
&sra->array.minor_version);
goto abort;
sra->array.layout = strtoul(buf, NULL, 0);
}
+ if (options & GET_DISKS) {
+ strcpy(base, "raid_disks");
+ if (load_sys(fname, buf))
+ goto abort;
+ sra->array.raid_disks = strtoul(buf, NULL, 0);
+ }
if (options & GET_COMPONENT) {
strcpy(base, "component_size");
if (load_sys(fname, buf))
dev->errors = strtoul(buf, NULL, 0);
}
}
+ closedir(dir);
return sra;
abort:
+ if (dir)
+ closedir(dir);
sysfs_free(sra);
return NULL;
}
if (fstat(fd, &stb)) return 0;
if (major(stb.st_rdev) == 9)
sprintf(fname, "/sys/block/md%d/md/component_size",
- minor(stb.st_rdev));
+ (int)minor(stb.st_rdev));
else
sprintf(fname, "/sys/block/md_d%d/md/component_size",
- minor(stb.st_rdev)>>MdpMinorShift);
+ (int)minor(stb.st_rdev)>>MdpMinorShift);
fd = open(fname, O_RDONLY);
if (fd < 0)
return 0;
return -1;
return 0;
}
+
+int sysfs_set_array(struct mdinfo *sra,
+ struct mdinfo *info)
+{
+ int rv = 0;
+ sra->array = info->array;
+
+ if (info->array.level < 0)
+ return 0; /* FIXME */
+ rv |= sysfs_set_str(sra, 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);
+ rv |= sysfs_set_num(sra, NULL, "resync_start", info->resync_start);
+ sra->array = info->array;
+ return rv;
+}
+
+int sysfs_add_disk(struct mdinfo *sra, struct mdinfo *sd)
+{
+ char dv[100];
+ char nm[100];
+ struct mdinfo *sd2;
+ char *dname;
+ int rv;
+
+ sprintf(dv, "%d:%d", sd->disk.major, sd->disk.minor);
+ rv = sysfs_set_str(sra, NULL, "new_dev", dv);
+ if (rv)
+ return rv;
+
+ memset(nm, 0, sizeof(nm));
+ sprintf(dv, "/sys/dev/block/%d:%d", sd->disk.major, sd->disk.minor);
+ if (readlink(dv, nm, sizeof(nm)) < 0)
+ return -1;
+ dname = strrchr(nm, '/');
+ if (dname) dname++;
+ strcpy(sd->sys_name, "dev-");
+ strcpy(sd->sys_name+4, dname);
+
+ rv |= sysfs_set_num(sra, sd, "offset", sd->data_offset);
+ rv |= sysfs_set_num(sra, sd, "size", (sd->component_size+1) / 2);
+ if (sra->array.level != LEVEL_CONTAINER) {
+ rv |= sysfs_set_num(sra, sd, "slot", sd->disk.raid_disk);
+// rv |= sysfs_set_str(sra, sd, "state", "in_sync");
+ }
+ sd2 = malloc(sizeof(*sd2));
+ *sd2 = *sd;
+ sd2->next = sra->devs;
+ sra->devs = sd2;
+
+ return rv;
+}