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mdadm/Detail.c
Daniel Baumann 60ccb5b596
Merging upstream version 4.3+20241108. 
Signed-off-by: Daniel Baumann <daniel@debian.org>
2025-02-14 06:34:57 +01:00

880 lines
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/*
* mdadm - manage Linux "md" devices aka RAID arrays.
*
* Copyright (C) 2001-2013 Neil Brown <neilb@suse.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; either version 2 of the License, or
* (at your option) any later version.
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Author: Neil Brown
* Email: <neilb@suse.de>
*/
#include "mdadm.h"
#include "md_p.h"
#include "md_u.h"
#include "xmalloc.h"
#include <ctype.h>
#include <dirent.h>
static int cmpstringp(const void *p1, const void *p2)
{
return strcmp(* (char * const *) p1, * (char * const *) p2);
}
static int add_device(const char *dev, char ***p_devices,
int *p_max_devices, int n_devices)
{
if (n_devices + 1 >= *p_max_devices) {
*p_max_devices += 16;
*p_devices = xrealloc(*p_devices, *p_max_devices *
sizeof(**p_devices));
if (!*p_devices) {
*p_max_devices = 0;
return 0;
}
};
(*p_devices)[n_devices] = xstrdup(dev);
return n_devices + 1;
}
/**
* detail_fname_from_uuid() - generate uuid string with special super1 handling.
* @mp: map entry to parse.
* @buf: buf to write.
*
* Hack to workaround an issue with super1 superblocks. It swapuuid set in order for assembly
* to work, but can't have it set if we want this printout to match all the other uuid printouts
* in super1.c, so we force swapuuid to 1 to make our printout match the rest of super1.
*
* Always convert uuid if host is big endian.
*/
char *detail_fname_from_uuid(struct map_ent *mp, char *buf)
{
#if __BYTE_ORDER == BIG_ENDIAN
bool swap = true;
#else
bool swap = false;
#endif
if (strncmp(mp->metadata, "1.", 2) == 0)
swap = true;
return __fname_from_uuid(mp->uuid, swap, buf, ':');
}
int Detail(char *dev, struct context *c)
{
/*
* Print out details for an md array
*/
int fd = open(dev, O_RDONLY);
mdu_array_info_t array;
mdu_disk_info_t *disks = NULL;
int next;
int d;
time_t atime;
char *str;
char **devices = NULL;
int max_devices = 0, n_devices = 0;
int spares = 0;
struct stat stb;
int failed = 0;
struct supertype *st = NULL;
char *subarray = NULL;
int max_disks = MD_SB_DISKS; /* just a default */
struct mdinfo *info = NULL;
struct mdinfo *sra = NULL;
struct mdinfo *subdev;
char *member = NULL;
char *container = NULL;
int rv = c->test ? 4 : 1;
int avail_disks = 0;
char *avail = NULL;
int external;
int inactive;
int is_container = 0;
char *arrayst;
if (fd < 0) {
pr_err("cannot open %s: %s\n",
dev, strerror(errno));
return rv;
}
sra = sysfs_read(fd, NULL, GET_VERSION | GET_DEVS |
GET_ARRAY_STATE | GET_STATE);
if (!sra) {
if (md_get_array_info(fd, &array)) {
pr_err("%s does not appear to be an md device\n", dev);
goto out;
}
}
external = (sra != NULL && sra->array.major_version == -1 &&
sra->array.minor_version == -2);
inactive = (sra != NULL && !md_array_is_active(sra));
st = super_by_fd(fd, &subarray);
if (md_get_array_info(fd, &array)) {
if (errno == ENODEV) {
if (sra->array.major_version == -1 &&
sra->array.minor_version == -1 &&
sra->devs == NULL) {
pr_err("Array associated with md device %s does not exist.\n",
dev);
goto out;
}
array = sra->array;
} else {
pr_err("cannot get array detail for %s: %s\n",
dev, strerror(errno));
goto out;
}
}
if (array.raid_disks == 0 && external)
is_container = 1;
if (fstat(fd, &stb) != 0 && !S_ISBLK(stb.st_mode))
stb.st_rdev = 0;
rv = 0;
if (st)
max_disks = st->max_devs;
if (subarray) {
/* This is a subarray of some container.
* We want the name of the container, and the member
*/
dev_t devid = devnm2devid(st->container_devnm);
int cfd, err;
member = subarray;
container = map_dev_preferred(major(devid), minor(devid),
1, c->prefer);
cfd = open_dev(st->container_devnm);
if (cfd >= 0) {
err = st->ss->load_container(st, cfd, NULL);
close(cfd);
if (err == 0)
info = st->ss->container_content(st, subarray);
}
}
/* try to load a superblock. Try sra->devs first, then try ioctl */
if (st && !info)
for (d = 0, subdev = sra ? sra->devs : NULL;
d < max_disks || subdev;
subdev ? (void)(subdev = subdev->next) : (void)(d++)){
mdu_disk_info_t disk;
char *dv;
int fd2;
int err;
if (subdev)
disk = subdev->disk;
else {
disk.number = d;
if (md_get_disk_info(fd, &disk) < 0)
continue;
if (d >= array.raid_disks &&
disk.major == 0 && disk.minor == 0)
continue;
}
if (array.raid_disks > 0 &&
(disk.state & (1 << MD_DISK_ACTIVE)) == 0)
continue;
dv = map_dev(disk.major, disk.minor, 1);
if (!dv)
continue;
fd2 = dev_open(dv, O_RDONLY);
if (fd2 < 0)
continue;
if (st->sb)
st->ss->free_super(st);
err = st->ss->load_super(st, fd2, NULL);
close(fd2);
if (err)
continue;
if (info)
free(info);
if (subarray)
info = st->ss->container_content(st, subarray);
else {
info = xmalloc(sizeof(*info));
st->ss->getinfo_super(st, info, NULL);
}
if (!info)
continue;
if (array.raid_disks != 0 && /* container */
(info->array.ctime != array.ctime ||
info->array.level != array.level)) {
st->ss->free_super(st);
continue;
}
/* some formats (imsm) have free-floating-spares
* with a uuid of uuid_zero, they don't
* have very good info about the rest of the
* container, so keep searching when
* encountering such a device. Otherwise, stop
* after the first successful call to
* ->load_super.
*/
if (memcmp(uuid_zero,
info->uuid,
sizeof(uuid_zero)) == 0) {
st->ss->free_super(st);
continue;
}
break;
}
/* Ok, we have some info to print... */
if (inactive && info)
str = map_num(pers, info->array.level);
else
str = map_num(pers, array.level);
if (c->export) {
char nbuf[64];
struct map_ent *mp = NULL, *map = NULL;
if (array.raid_disks) {
if (str)
printf("MD_LEVEL=%s\n", str);
printf("MD_DEVICES=%d\n", array.raid_disks);
} else {
if (is_container)
printf("MD_LEVEL=container\n");
printf("MD_DEVICES=%d\n", array.nr_disks);
}
if (container) {
printf("MD_CONTAINER=%s\n", container);
printf("MD_MEMBER=%s\n", member);
} else {
if (sra && sra->array.major_version < 0)
printf("MD_METADATA=%s\n", sra->text_version);
else
printf("MD_METADATA=%d.%d\n",
array.major_version,
array.minor_version);
}
if (info && memcmp(info->uuid, uuid_zero, sizeof(int[4])) != 0)
mp = map_by_uuid(&map, info->uuid);
if (!mp)
mp = map_by_devnm(&map, fd2devnm(fd));
if (mp) {
detail_fname_from_uuid(mp, nbuf);
printf("MD_UUID=%s\n", nbuf + 5);
if (mp->path && strncmp(mp->path, DEV_MD_DIR, DEV_MD_DIR_LEN) == 0)
printf("MD_DEVNAME=%s\n", mp->path + DEV_MD_DIR_LEN);
}
map_free(map);
if (st && st->sb) {
if (st->ss->export_detail_super)
st->ss->export_detail_super(st);
}
if (!c->no_devices && sra) {
struct mdinfo *mdi;
for (mdi = sra->devs; mdi; mdi = mdi->next) {
char *path;
char *sysdev = xstrdup(mdi->sys_name);
char *cp;
path = map_dev(mdi->disk.major,
mdi->disk.minor, 0);
for (cp = sysdev; *cp; cp++)
if (!isalnum(*cp))
*cp = '_';
if (mdi->disk.raid_disk >= 0)
printf("MD_DEVICE_%s_ROLE=%d\n",
sysdev,
mdi->disk.raid_disk);
else
printf("MD_DEVICE_%s_ROLE=spare\n",
sysdev);
if (path)
printf("MD_DEVICE_%s_DEV=%s\n",
sysdev, path);
free(sysdev);
}
}
goto out;
}
disks = xmalloc(max_disks * 2 * sizeof(mdu_disk_info_t));
for (d = 0; d < max_disks * 2; d++) {
disks[d].state = (1 << MD_DISK_REMOVED);
disks[d].major = disks[d].minor = 0;
disks[d].number = -1;
disks[d].raid_disk = d / 2;
}
next = array.raid_disks * 2;
if (inactive) {
struct mdinfo *mdi;
for (mdi = sra->devs; mdi; mdi = mdi->next) {
disks[next++] = mdi->disk;
disks[next - 1].number = -1;
}
} else for (d = 0; d < max_disks; d++) {
mdu_disk_info_t disk;
disk.number = d;
if (md_get_disk_info(fd, &disk) < 0) {
if (d < array.raid_disks)
pr_err("cannot get device detail for device %d: %s\n",
d, strerror(errno));
continue;
}
if (disk.major == 0 && disk.minor == 0)
continue;
if (disk.raid_disk >= 0 && disk.raid_disk < array.raid_disks &&
disks[disk.raid_disk * 2].state == (1 << MD_DISK_REMOVED) &&
((disk.state & (1 << MD_DISK_JOURNAL)) == 0))
disks[disk.raid_disk * 2] = disk;
else if (disk.raid_disk >= 0 &&
disk.raid_disk < array.raid_disks &&
disks[disk.raid_disk * 2 + 1].state ==
(1 << MD_DISK_REMOVED) &&
!(disk.state & (1 << MD_DISK_JOURNAL)))
disks[disk.raid_disk * 2 + 1] = disk;
else if (next < max_disks * 2)
disks[next++] = disk;
}
avail = xcalloc(array.raid_disks, 1);
for (d = 0; d < array.raid_disks; d++) {
char dv[PATH_MAX], dv_rep[PATH_MAX];
snprintf(dv, PATH_MAX, "/sys/dev/block/%d:%d",
disks[d*2].major, disks[d*2].minor);
snprintf(dv_rep, PATH_MAX, "/sys/dev/block/%d:%d",
disks[d*2+1].major, disks[d*2+1].minor);
if ((is_dev_alive(dv) && (disks[d*2].state & (1<<MD_DISK_SYNC))) ||
(is_dev_alive(dv_rep) && (disks[d*2+1].state & (1<<MD_DISK_SYNC)))) {
avail_disks ++;
avail[d] = 1;
} else
rv |= !! c->test;
}
if (c->brief) {
mdu_bitmap_file_t bmf;
if (inactive && !is_container)
printf("INACTIVE-ARRAY %s", dev);
else
printf("ARRAY %s", dev);
if (c->verbose > 0) {
if (array.raid_disks)
printf(" level=%s num-devices=%d",
str ? str : "-unknown-",
array.raid_disks);
else if (is_container)
printf(" level=container num-devices=%d",
array.nr_disks);
else
printf(" num-devices=%d", array.nr_disks);
}
if (container) {
printf(" container=%s", container);
printf(" member=%s", member);
} else {
if (sra && sra->array.major_version < 0)
printf(" metadata=%s", sra->text_version);
else
printf(" metadata=%d.%d", array.major_version,
array.minor_version);
}
/* Only try GET_BITMAP_FILE for 0.90.01 and later */
if (ioctl(fd, GET_BITMAP_FILE, &bmf) == 0 && bmf.pathname[0]) {
printf(" bitmap=%s", bmf.pathname);
}
} else {
mdu_bitmap_file_t bmf;
unsigned long long larray_size;
struct mdstat_ent *ms = mdstat_read(0, 0);
struct mdstat_ent *e;
char *devnm;
devnm = stat2devnm(&stb);
for (e = ms; e; e = e->next)
if (strcmp(e->devnm, devnm) == 0)
break;
if (!get_dev_size(fd, NULL, &larray_size))
larray_size = 0;
printf("%s:\n", dev);
if (container)
printf(" Container : %s, member %s\n",
container, member);
else {
if (sra && sra->array.major_version < 0)
printf(" Version : %s\n",
sra->text_version);
else
printf(" Version : %d.%d\n",
array.major_version,
array.minor_version);
}
atime = array.ctime;
if (atime)
printf(" Creation Time : %.24s\n", ctime(&atime));
if (is_container)
str = "container";
if (str)
printf(" Raid Level : %s\n", str);
if (larray_size)
printf(" Array Size : %llu%s\n",
(larray_size >> 10),
human_size(larray_size));
if (array.level >= 1) {
if (sra)
array.major_version = sra->array.major_version;
if (array.major_version != 0 &&
(larray_size >= 0xFFFFFFFFULL|| array.size == 0)) {
unsigned long long dsize;
dsize = get_component_size(fd);
if (dsize > 0)
printf(" Used Dev Size : %llu%s\n",
dsize/2,
human_size((long long)dsize<<9));
else
printf(" Used Dev Size : unknown\n");
} else
printf(" Used Dev Size : %lu%s\n",
(unsigned long)array.size,
human_size((unsigned long long)
array.size << 10));
}
if (array.raid_disks)
printf(" Raid Devices : %d\n", array.raid_disks);
printf(" Total Devices : %d\n", array.nr_disks);
if (!container &&
((sra == NULL && array.major_version == 0) ||
(sra && sra->array.major_version == 0)))
printf(" Preferred Minor : %d\n", array.md_minor);
if (sra == NULL || sra->array.major_version >= 0)
printf(" Persistence : Superblock is %spersistent\n",
array.not_persistent ? "not " : "");
printf("\n");
/* Only try GET_BITMAP_FILE for 0.90.01 and later */
if (ioctl(fd, GET_BITMAP_FILE, &bmf) == 0 && bmf.pathname[0]) {
printf(" Intent Bitmap : %s\n", bmf.pathname);
printf("\n");
} else if (array.state & (1<<MD_SB_CLUSTERED))
printf(" Intent Bitmap : Internal(Clustered)\n\n");
else if (array.state & (1<<MD_SB_BITMAP_PRESENT))
printf(" Intent Bitmap : Internal\n\n");
atime = array.utime;
if (atime)
printf(" Update Time : %.24s\n", ctime(&atime));
if (array.raid_disks) {
static char *sync_action[] = {
", recovering", ", resyncing",
", reshaping", ", checking" };
char *st;
if (avail_disks == array.raid_disks)
st = "";
else if (!enough(array.level, array.raid_disks,
array.layout, 1, avail))
st = ", FAILED";
else
st = ", degraded";
if (array.state & (1 << MD_SB_CLEAN)) {
if ((array.level == 0) ||
(array.level == LEVEL_LINEAR))
arrayst = map_num_s(sysfs_array_states,
sra->array_state);
else
arrayst = "clean";
} else {
arrayst = "active";
if (array.state & (1<<MD_SB_CLUSTERED)) {
for (d = 0; d < max_disks * 2; d++) {
char *dv;
mdu_disk_info_t disk = disks[d];
/* only check first valid disk in cluster env */
if ((disk.state & (MD_DISK_SYNC | MD_DISK_ACTIVE))
&& (disk.major | disk.minor)) {
dv = map_dev_preferred(disk.major, disk.minor, 0,
c->prefer);
if (!dv)
continue;
arrayst = IsBitmapDirty(dv) ? "active" : "clean";
break;
}
}
}
}
printf(" State : %s%s%s%s%s%s%s \n",
arrayst, st,
(!e || (e->percent < 0 &&
e->percent != RESYNC_PENDING &&
e->percent != RESYNC_DELAYED &&
e->percent != RESYNC_REMOTE)) ?
"" : sync_action[e->resync],
larray_size ? "": ", Not Started",
(e && e->percent == RESYNC_DELAYED) ?
" (DELAYED)": "",
(e && e->percent == RESYNC_PENDING) ?
" (PENDING)": "",
(e && e->percent == RESYNC_REMOTE) ?
" (REMOTE)": "");
} else if (inactive && !is_container) {
printf(" State : inactive\n");
}
printf(" Active Devices : %d\n", array.active_disks);
printf(" Working Devices : %d\n", array.working_disks);
printf(" Failed Devices : %d\n", array.failed_disks);
printf(" Spare Devices : %d\n", array.spare_disks);
printf("\n");
if (array.level == 5) {
str = map_num(r5layout, array.layout);
printf(" Layout : %s\n",
str ? str : "-unknown-");
}
if (array.level == 0 && array.layout) {
str = map_num(r0layout, array.layout);
printf(" Layout : %s\n",
str ? str : "-unknown-");
}
if (array.level == 6) {
str = map_num(r6layout, array.layout);
printf(" Layout : %s\n",
str ? str : "-unknown-");
}
if (array.level == 10) {
printf(" Layout :");
print_r10_layout(array.layout);
printf("\n");
}
switch (array.level) {
case 0:
case 4:
case 5:
case 10:
case 6:
if (array.chunk_size)
printf(" Chunk Size : %dK\n\n",
array.chunk_size/1024);
break;
case -1:
printf(" Rounding : %dK\n\n",
array.chunk_size/1024);
break;
default:
break;
}
if (array.raid_disks) {
struct mdinfo *mdi;
mdi = sysfs_read(fd, NULL, GET_CONSISTENCY_POLICY);
if (mdi) {
char *policy = map_num(consistency_policies,
mdi->consistency_policy);
sysfs_free(mdi);
if (policy)
printf("Consistency Policy : %s\n\n",
policy);
}
}
if (e && e->percent >= 0) {
static char *sync_action[] = {
"Rebuild", "Resync", "Reshape", "Check"};
printf(" %7s Status : %d%% complete\n",
sync_action[e->resync], e->percent);
}
if ((st && st->sb) && (info && info->reshape_active)) {
if (info->delta_disks != 0)
printf(" Delta Devices : %d, (%d->%d)\n",
info->delta_disks,
array.raid_disks - info->delta_disks,
array.raid_disks);
if (info->new_level != array.level) {
str = map_num(pers, info->new_level);
printf(" New Level : %s\n",
str ? str : "-unknown-");
}
if (info->new_level != array.level ||
info->new_layout != array.layout) {
if (info->new_level == 5) {
str = map_num(r5layout,
info->new_layout);
printf(" New Layout : %s\n",
str ? str : "-unknown-");
}
if (info->new_level == 6) {
str = map_num(r6layout,
info->new_layout);
printf(" New Layout : %s\n",
str ? str : "-unknown-");
}
if (info->new_level == 10) {
printf(" New Layout : near=%d, %s=%d\n",
info->new_layout & 255,
(info->new_layout & 0x10000) ?
"offset" : "far",
(info->new_layout >> 8) & 255);
}
}
if (info->new_chunk != array.chunk_size)
printf(" New Chunksize : %dK\n",
info->new_chunk/1024);
printf("\n");
} else if (e && e->percent >= 0)
printf("\n");
free_mdstat(ms);
if (st && st->sb)
st->ss->detail_super(st, c->homehost, subarray);
if (array.raid_disks == 0 && sra &&
sra->array.major_version == -1 &&
sra->array.minor_version == -2 &&
sra->text_version[0] != '/') {
/* This looks like a container. Find any active arrays
* That claim to be a member.
*/
DIR *dir = opendir("/sys/block");
struct dirent *de;
printf(" Member Arrays :");
while (dir && (de = readdir(dir)) != NULL) {
char path[287];
char vbuf[1024];
int nlen = strlen(sra->sys_name);
dev_t devid;
if (de->d_name[0] == '.')
continue;
sprintf(path,
"/sys/block/%s/md/metadata_version",
de->d_name);
if (load_sys(path, vbuf, sizeof(vbuf)) < 0)
continue;
if (strncmp(vbuf, "external:", 9) ||
!is_subarray(vbuf + 9) ||
strncmp(vbuf + 10, sra->sys_name, nlen) ||
vbuf[10 + nlen] != '/')
continue;
devid = devnm2devid(de->d_name);
printf(" %s",
map_dev_preferred(major(devid),
minor(devid), 1,
c->prefer));
}
if (dir)
closedir(dir);
printf("\n\n");
}
if (!c->no_devices) {
if (array.raid_disks)
printf(" Number Major Minor RaidDevice State\n");
else
printf(" Number Major Minor RaidDevice\n");
}
}
/* if --no_devices specified, not print component devices info */
if (c->no_devices)
goto skip_devices_state;
for (d = 0; d < max_disks * 2; d++) {
char *dv;
mdu_disk_info_t disk = disks[d];
if (d >= array.raid_disks * 2 &&
disk.major == 0 && disk.minor == 0)
continue;
if ((d & 1) && disk.major == 0 && disk.minor == 0)
continue;
if (!c->brief) {
if (d == array.raid_disks*2)
printf("\n");
if (disk.number < 0 && disk.raid_disk < 0)
printf(" - %5d %5d - ",
disk.major, disk.minor);
else if (disk.raid_disk < 0 ||
disk.state & (1 << MD_DISK_JOURNAL))
printf(" %5d %5d %5d - ",
disk.number, disk.major, disk.minor);
else if (disk.number < 0)
printf(" - %5d %5d %5d ",
disk.major, disk.minor, disk.raid_disk);
else
printf(" %5d %5d %5d %5d ",
disk.number, disk.major, disk.minor,
disk.raid_disk);
}
if (!c->brief && array.raid_disks) {
if (disk.state & (1 << MD_DISK_FAULTY)) {
printf(" faulty");
if (disk.raid_disk < array.raid_disks &&
disk.raid_disk >= 0)
failed++;
}
if (disk.state & (1 << MD_DISK_ACTIVE))
printf(" active");
if (disk.state & (1 << MD_DISK_SYNC)) {
printf(" sync");
if (array.level == 10 &&
(array.layout & ~0x1FFFF) == 0) {
int nc = array.layout & 0xff;
int fc = (array.layout >> 8) & 0xff;
int copies = nc*fc;
if (fc == 1 &&
array.raid_disks % copies == 0 &&
copies <= 26) {
/* We can divide the devices
into 'sets' */
int set;
set = disk.raid_disk % copies;
printf(" set-%c", set + 'A');
}
}
}
if (disk.state & (1 << MD_DISK_REMOVED))
printf(" removed");
if (disk.state & (1 << MD_DISK_WRITEMOSTLY))
printf(" writemostly");
if (disk.state & (1 << MD_DISK_FAILFAST))
printf(" failfast");
if (disk.state & (1 << MD_DISK_JOURNAL))
printf(" journal");
if ((disk.state &
((1 << MD_DISK_ACTIVE) | (1 << MD_DISK_SYNC) |
(1 << MD_DISK_REMOVED) | (1 << MD_DISK_FAULTY) |
(1 << MD_DISK_JOURNAL))) == 0) {
printf(" spare");
if (disk.raid_disk < array.raid_disks &&
disk.raid_disk >= 0)
printf(" rebuilding");
}
}
if (disk.state == 0)
spares++;
dv = map_dev_preferred(disk.major, disk.minor, 0, c->prefer);
if (dv != NULL) {
if (c->brief)
n_devices = add_device(dv, &devices,
&max_devices, n_devices);
else
printf(" %s", dv);
} else if (disk.major | disk.minor)
printf(" missing");
if (!c->brief)
printf("\n");
}
skip_devices_state:
if (spares && c->brief && array.raid_disks)
printf(" spares=%d", spares);
if (c->brief && st && st->sb)
st->ss->brief_detail_super(st, subarray);
if (st)
st->ss->free_super(st);
if (c->brief && c->verbose > 0 && devices) {
qsort(devices, n_devices, sizeof(*devices), cmpstringp);
printf("\n devices=%s", devices[0]);
for (d = 1; d < n_devices; d++)
printf(",%s", devices[d]);
}
if (c->brief)
printf("\n");
if (c->test &&
!enough(array.level, array.raid_disks, array.layout, 1, avail))
rv = 2;
out:
free(info);
free(disks);
close(fd);
free(subarray);
free(avail);
if (devices)
for (d = 0; d < n_devices; d++)
free(devices[d]);
free(devices);
sysfs_free(sra);
free(st);
return rv;
}
int Detail_Platform(struct superswitch *ss, int scan, int verbose, int export, char *controller_path)
{
/* display platform capabilities for the given metadata format
* 'scan' in this context means iterate over all metadata types
*/
int i;
int err = 1;
if (ss && export && ss->export_detail_platform)
err = ss->export_detail_platform(verbose, controller_path);
else if (ss && ss->detail_platform)
err = ss->detail_platform(verbose, 0, controller_path);
else if (ss) {
if (verbose > 0)
pr_err("%s metadata is platform independent\n",
ss->name ? : "[no name]");
} else if (!scan) {
if (verbose > 0)
pr_err("specify a metadata type or --scan\n");
}
if (!scan)
return err;
err = 0;
for (i = 0; superlist[i]; i++) {
struct superswitch *meta = superlist[i];
if (meta == ss)
continue;
if (verbose > 0)
pr_err("checking metadata %s\n",
meta->name ? : "[no name]");
if (!meta->detail_platform) {
if (verbose > 0)
pr_err("%s metadata is platform independent\n",
meta->name ? : "[no name]");
} else if (export && meta->export_detail_platform) {
err |= meta->export_detail_platform(verbose, controller_path);
} else
err |= meta->detail_platform(verbose, 0, controller_path);
}
return err;
}
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