#include <string.h>
#include <libdevmapper.h>
#include <ctype.h>
-#include <linux/kdev_t.h>
#include <unistd.h>
#include <errno.h>
{
char version[64];
int v[3];
- int minv[3] = {1, 2, 8};
+ int minv[3] = {1, 2, 38};
dm_get_library_version(version, sizeof(version));
condlog(3, "libdevmapper version %s", version);
}
extern int
-dm_prereq (char * str)
+dm_prereq (void)
{
if (dm_libprereq())
return 1;
- return dm_drvprereq(str);
+ return dm_drvprereq(TGT_MPATH);
}
-extern int
-dm_simplecmd (int task, const char *name) {
+static int
+dm_simplecmd (int task, const char *name, int no_flush, int need_sync) {
int r = 0;
+ int udev_wait_flag = (need_sync && (task == DM_DEVICE_RESUME ||
+ task == DM_DEVICE_REMOVE));
struct dm_task *dmt;
if (!(dmt = dm_task_create (task)))
goto out;
dm_task_no_open_count(dmt);
- dm_task_skip_lockfs(dmt); /* for DM_DEVICE_RESUME */
+ dm_task_skip_lockfs(dmt); /* for DM_DEVICE_RESUME */
#ifdef LIBDM_API_FLUSH
- dm_task_no_flush(dmt); /* for DM_DEVICE_SUSPEND/RESUME */
+ if (no_flush)
+ dm_task_no_flush(dmt); /* for DM_DEVICE_SUSPEND/RESUME */
#endif
+ if (udev_wait_flag && !dm_task_set_cookie(dmt, &conf->cookie, 0))
+ goto out;
r = dm_task_run (dmt);
out:
}
extern int
-dm_addmap (int task, const char *name, const char *target,
- const char *params, unsigned long long size, const char *uuid) {
+dm_simplecmd_flush (int task, const char *name, int needsync) {
+ return dm_simplecmd(task, name, 0, needsync);
+}
+
+extern int
+dm_simplecmd_noflush (int task, const char *name) {
+ return dm_simplecmd(task, name, 1, 1);
+}
+
+extern int
+dm_addmap (int task, const char *target, struct multipath *mpp, int use_uuid,
+ int ro) {
int r = 0;
struct dm_task *dmt;
char *prefixed_uuid = NULL;
if (!(dmt = dm_task_create (task)))
return 0;
- if (!dm_task_set_name (dmt, name))
+ if (!dm_task_set_name (dmt, mpp->alias))
goto addout;
- if (!dm_task_add_target (dmt, 0, size, target, params))
+ if (!dm_task_add_target (dmt, 0, mpp->size, target, mpp->params))
goto addout;
- if (uuid){
- prefixed_uuid = MALLOC(UUID_PREFIX_LEN + strlen(uuid) + 1);
+ if (ro)
+ dm_task_set_ro(dmt);
+
+ if (use_uuid && mpp->wwid){
+ prefixed_uuid = MALLOC(UUID_PREFIX_LEN + strlen(mpp->wwid) + 1);
if (!prefixed_uuid) {
condlog(0, "cannot create prefixed uuid : %s\n",
strerror(errno));
goto addout;
}
- sprintf(prefixed_uuid, UUID_PREFIX "%s", uuid);
+ sprintf(prefixed_uuid, UUID_PREFIX "%s", mpp->wwid);
if (!dm_task_set_uuid(dmt, prefixed_uuid))
goto freeout;
}
+ if (mpp->attribute_flags & (1 << ATTR_MODE) &&
+ !dm_task_set_mode(dmt, mpp->mode))
+ goto freeout;
+ if (mpp->attribute_flags & (1 << ATTR_UID) &&
+ !dm_task_set_uid(dmt, mpp->uid))
+ goto freeout;
+ if (mpp->attribute_flags & (1 << ATTR_GID) &&
+ !dm_task_set_gid(dmt, mpp->gid))
+ goto freeout;
+
dm_task_no_open_count(dmt);
+ if (task == DM_DEVICE_CREATE &&
+ !dm_task_set_cookie(dmt, &conf->cookie, 0))
+ goto freeout;
r = dm_task_run (dmt);
freeout:
if (prefixed_uuid)
- free(prefixed_uuid);
+ FREE(prefixed_uuid);
addout:
dm_task_destroy (dmt);
+
return r;
}
+static int
+_dm_addmap_create (struct multipath *mpp, int ro) {
+ int r;
+ r = dm_addmap(DM_DEVICE_CREATE, TGT_MPATH, mpp, 1, ro);
+ /*
+ * DM_DEVICE_CREATE is actually DM_DEV_CREATE + DM_TABLE_LOAD.
+ * Failing the second part leaves an empty map. Clean it up.
+ */
+ if (!r && dm_map_present(mpp->alias)) {
+ condlog(3, "%s: failed to load map (a path might be in use)",
+ mpp->alias);
+ dm_flush_map_nosync(mpp->alias);
+ }
+ return r;
+}
+
+#define ADDMAP_RW 0
+#define ADDMAP_RO 1
+
+extern int
+dm_addmap_create (struct multipath *mpp) {
+ return _dm_addmap_create(mpp, ADDMAP_RW);
+}
+
extern int
-dm_map_present (char * str)
+dm_addmap_create_ro (struct multipath *mpp) {
+ return _dm_addmap_create(mpp, ADDMAP_RO);
+}
+
+extern int
+dm_addmap_reload (struct multipath *mpp) {
+ return dm_addmap(DM_DEVICE_RELOAD, TGT_MPATH, mpp, 0, ADDMAP_RW);
+}
+
+extern int
+dm_addmap_reload_ro (struct multipath *mpp) {
+ return dm_addmap(DM_DEVICE_RELOAD, TGT_MPATH, mpp, 0, ADDMAP_RO);
+}
+
+extern int
+dm_map_present (const char * str)
{
int r = 0;
struct dm_task *dmt;
if (!dmt)
return 1;
- if (!dm_task_set_name (dmt, name))
- goto uuidout;
+ if (!dm_task_set_name (dmt, name))
+ goto uuidout;
if (!dm_task_run(dmt))
- goto uuidout;
+ goto uuidout;
uuidtmp = dm_task_get_uuid(dmt);
if (uuidtmp) {
* -1 : empty map
*/
extern int
-dm_type(char * name, char * type)
+dm_type(const char * name, char * type)
{
int r = 0;
struct dm_task *dmt;
}
static int
-dm_dev_t (char * mapname, char * dev_t, int len)
+dm_dev_t (const char * mapname, char * dev_t, int len)
{
int r = 1;
struct dm_task *dmt;
dm_task_destroy(dmt);
return r;
}
-
+
int
-dm_get_opencount (char * mapname)
+dm_get_opencount (const char * mapname)
{
int r = -1;
struct dm_task *dmt;
dm_task_destroy(dmt);
return r;
}
-
+
int
dm_get_minor (char * mapname)
{
dm_task_destroy(dmt);
return r;
}
-
+
extern int
-dm_flush_map (char * mapname, char * type)
+_dm_flush_map (const char * mapname, int need_sync)
{
int r;
if (!dm_map_present(mapname))
return 0;
- if (dm_type(mapname, type) <= 0)
- return 1;
+ if (dm_type(mapname, TGT_MPATH) <= 0)
+ return 0; /* nothing to do */
- if (dm_remove_partmaps(mapname))
+ if (dm_remove_partmaps(mapname, need_sync))
return 1;
if (dm_get_opencount(mapname)) {
condlog(2, "%s: map in use", mapname);
return 1;
- }
+ }
- r = dm_simplecmd(DM_DEVICE_REMOVE, mapname);
+ r = dm_simplecmd_flush(DM_DEVICE_REMOVE, mapname, need_sync);
if (r) {
condlog(4, "multipath map %s removed", mapname);
}
extern int
-dm_flush_maps (char * type)
+dm_flush_maps (void)
{
int r = 0;
struct dm_task *dmt;
goto out;
do {
- r += dm_flush_map(names->name, type);
+ r |= dm_flush_map(names->name);
next = names->next;
names = (void *) names + next;
} while (next);
}
int
-dm_get_maps (vector mp, char * type)
+dm_get_maps (vector mp)
{
struct multipath * mpp;
int r = 1;
struct dm_names *names;
unsigned next = 0;
- if (!type || !mp)
+ if (!mp)
return 1;
if (!(dmt = dm_task_create(DM_DEVICE_LIST)))
}
do {
- info = dm_type(names->name, type);
+ info = dm_type(names->name, TGT_MPATH);
if (info <= 0)
goto next;
vector_set_slot(mp, mpp);
mpp = NULL;
next:
- next = names->next;
- names = (void *) names + next;
+ next = names->next;
+ names = (void *) names + next;
} while (next);
r = 0;
return r;
}
-extern int
-dm_get_name(char *uuid, char *type, char *name)
+extern char *
+dm_get_name(char *uuid)
{
- vector vec;
- struct multipath *mpp;
- int i;
-
- vec = vector_alloc();
+ struct dm_task *dmt;
+ struct dm_info info;
+ char *prefixed_uuid, *name = NULL;
+ const char *nametmp;
- if (!vec)
- return 0;
+ dmt = dm_task_create(DM_DEVICE_INFO);
+ if (!dmt)
+ return NULL;
- if (dm_get_maps(vec, type)) {
- vector_free(vec);
- return 0;
+ prefixed_uuid = MALLOC(UUID_PREFIX_LEN + strlen(uuid) + 1);
+ if (!prefixed_uuid) {
+ condlog(0, "cannot create prefixed uuid : %s\n",
+ strerror(errno));
+ goto freeout;
}
+ sprintf(prefixed_uuid, UUID_PREFIX "%s", uuid);
+ if (!dm_task_set_uuid(dmt, prefixed_uuid))
+ goto freeout;
- vector_foreach_slot(vec, mpp, i) {
- if (!strcmp(uuid, mpp->wwid)) {
- vector_free(vec);
- strcpy(name, mpp->alias);
- return 1;
- }
+ if (!dm_task_run(dmt))
+ goto freeout;
+
+ if (!dm_task_get_info(dmt, &info) || !info.exists)
+ goto freeout;
+
+ nametmp = dm_task_get_name(dmt);
+ if (nametmp && strlen(nametmp)) {
+ name = MALLOC(strlen(nametmp) + 1);
+ if (name)
+ strcpy(name, nametmp);
+ } else {
+ condlog(2, "%s: no device-mapper name found", uuid);
}
- vector_free(vec);
- return 0;
+freeout:
+ if (prefixed_uuid)
+ FREE(prefixed_uuid);
+ dm_task_destroy(dmt);
+
+ return name;
}
int
}
int
-dm_remove_partmaps (char * mapname)
+dm_remove_partmaps (const char * mapname, int need_sync)
{
struct dm_task *dmt;
struct dm_names *names;
/*
* if devmap target is "linear"
*/
- (dm_type(names->name, "linear") > 0) &&
+ (dm_type(names->name, TGT_PART) > 0) &&
/*
* and the multipath mapname and the part mapname start
*/
strstr(params, dev_t)
) {
- /*
+ /*
* then it's a kpartx generated partition.
* remove it.
*/
condlog(4, "partition map %s removed",
names->name);
- dm_simplecmd(DM_DEVICE_REMOVE, names->name);
+ dm_simplecmd_flush(DM_DEVICE_REMOVE, names->name, need_sync);
}
next = names->next;
{
int r = 1;
struct dm_task *dmt = NULL;
-
+
if (!mapname)
return 1;
r = 0;
out:
- if (r)
+ if (r) {
memset(*dmi, 0, sizeof(struct dm_info));
+ FREE(*dmi);
+ *dmi = NULL;
+ }
if (dmt)
dm_task_destroy(dmt);
/*
* if devmap target is "linear"
*/
- (dm_type(names->name, "linear") > 0) &&
+ (dm_type(names->name, TGT_PART) > 0) &&
/*
* and the multipath mapname and the part mapname start
*/
strstr(buff, dev_t)
) {
- /*
+ /*
* then it's a kpartx generated partition.
* Rename it.
*/
if (!dm_task_set_newname(dmt, new))
goto out;
-
+
dm_task_no_open_count(dmt);
+ if (!dm_task_set_cookie(dmt, &conf->cookie, 0))
+ goto out;
if (!dm_task_run(dmt))
goto out;
projects / platform / upstream / multipath-tools.git / blobdiff