LU-2149 llog: lctl to work with llogs from command line

[fs/lustre-release.git] / lustre / mgs / mgs_llog.c

diff --git a/lustre/mgs/mgs_llog.c b/lustre/mgs/mgs_llog.c
index 4cb0eb0..3bfd6a8 100644 (file)
--- a/lustre/mgs/mgs_llog.c
+++ b/lustre/mgs/mgs_llog.c
@@ -3688,6 +3688,43 @@ int mgs_erase_logs(const struct lu_env *env, struct mgs_device *mgs, char *fsnam
         RETURN(rc);
 }
 
+/* list all logs for the given fs */
+int mgs_list_logs(const struct lu_env *env, struct mgs_device *mgs,
+                 struct obd_ioctl_data *data)
+{
+       cfs_list_t               list;
+       struct mgs_direntry     *dirent, *n;
+       char                    *out, *suffix;
+       int                      l, remains, rc;
+
+       ENTRY;
+
+       /* Find all the logs in the CONFIGS directory */
+       rc = class_dentry_readdir(env, mgs, &list);
+       if (rc) {
+               CERROR("%s: can't read %s dir = %d\n",
+                      mgs->mgs_obd->obd_name, MOUNT_CONFIGS_DIR, rc);
+               RETURN(rc);
+       }
+
+       out = data->ioc_bulk;
+       remains = data->ioc_inllen1;
+       cfs_list_for_each_entry_safe(dirent, n, &list, list) {
+               cfs_list_del(&dirent->list);
+               suffix = strrchr(dirent->name, '-');
+               if (suffix != NULL) {
+                       l = snprintf(out, remains, "config log: $%s\n",
+                                    dirent->name);
+                       out += l;
+                       remains -= l;
+               }
+               mgs_direntry_free(dirent);
+               if (remains <= 0)
+                       break;
+       }
+       RETURN(rc);
+}
+
 /* from llog_swab */
 static void print_lustre_cfg(struct lustre_cfg *lcfg)
 {