#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
+#include <sys/ioctl.h>
#include <string.h>
#include <unistd.h>
#include <sys/time.h>
return llapi_search_tgt(fsname, poolname, ostname, false);
}
+int llapi_rmfid(const char *path, struct fid_array *fa)
+{
+ char rootpath[PATH_MAX];
+ int fd, rc;
+
+retry_open:
+ fd = open(path, O_RDONLY | O_NONBLOCK | O_NOFOLLOW);
+ if (fd < 0) {
+ if (errno == ENOENT && path != rootpath) {
+ rc = llapi_search_rootpath(rootpath, path);
+ if (!rc) {
+ path = rootpath;
+ goto retry_open;
+ }
+ } else {
+ return -errno;
+ }
+ }
+
+ rc = ioctl(fd, LL_IOC_RMFID, fa);
+ close(fd);
+
+ return rc ? -errno : 0;
+}
+
+int llapi_get_fsname_instance(const char *path, char *fsname, size_t fsname_len,
+ char *instance, size_t instance_len)
+{
+ struct obd_uuid uuid_buf;
+ char *uuid = uuid_buf.uuid;
+ char *ptr;
+ int rc;
+
+ memset(&uuid_buf, 0, sizeof(uuid_buf));
+ rc = llapi_file_get_lov_uuid(path, &uuid_buf);
+ if (rc)
+ return rc;
+
+ /*
+ * We want to turn fs-foo-clilov-ffff88002738bc00 into 'fs-foo' and
+ * 'ffff88002738bc00' in a portable way that doesn't depend on what is
+ * after "-clilov-" as it may change to a UUID string in the future.
+ * Unfortunately, the "fsname" part may contain a dash, so we can't
+ * just skip to the first dash, and if the "instance" is a UUID in the
+ * future we can't necessarily go to the last dash either.
+ */
+ ptr = strstr(uuid, "-clilov-");
+ if (!ptr || (!fsname && !instance)) {
+ rc = -EINVAL;
+ goto out;
+ }
+
+ *ptr = '\0';
+ ptr += strlen("-clilov-");
+ if (instance) {
+ snprintf(instance, instance_len, "%s", ptr);
+ if (strlen(ptr) >= instance_len)
+ rc = -ENAMETOOLONG;
+ }
+
+ if (fsname) {
+ snprintf(fsname, fsname_len, "%s", uuid);
+ if (strlen(uuid) >= fsname_len)
+ rc = -ENAMETOOLONG;
+ }
+
+out:
+ errno = -rc;
+ return rc;
+}
+
+int llapi_getname(const char *path, char *name, size_t namelen)
+{
+ char fsname[16];
+ char instance[40];
+ int rc;
+
+ rc = llapi_get_fsname_instance(path, fsname, sizeof(fsname),
+ instance, sizeof(instance));
+ if (rc)
+ return rc;
+
+ snprintf(name, namelen, "%s-%s", fsname, instance);
+ if (strlen(fsname) + 1 + strlen(instance) >= namelen) {
+ rc = -ENAMETOOLONG;
+ errno = -rc;
+ }
+
+ return rc;
+}
+
+int llapi_get_instance(const char *path, char *instance, size_t instance_len)
+{
+ return llapi_get_fsname_instance(path, NULL, 0, instance, instance_len);
+}
+
+int llapi_get_fsname(const char *path, char *fsname, size_t fsname_len)
+{
+ return llapi_get_fsname_instance(path, fsname, fsname_len, NULL, 0);
+}