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LU-6052 utils: change "lfs mv" to "lfs migrate"
[fs/lustre-release.git] / lustre / utils / liblustreapi.c
index 8dde0ce..ea68c7e 100644 (file)
@@ -72,7 +72,6 @@
 #include <poll.h>
 
 #include <libcfs/util/string.h>
-#include <libcfs/libcfs.h>
 #include <lnet/lnetctl.h>
 #include <lustre/lustreapi.h>
 #include <lustre_ioctl.h>
@@ -1549,7 +1548,7 @@ static int common_param_init(struct find_param *param, char *path)
                lum_size = PATH_MAX + 1;
 
        param->fp_lum_size = lum_size;
-       param->fp_lmd = malloc(sizeof(lstat_t) + param->fp_lum_size);
+       param->fp_lmd = calloc(1, sizeof(lstat_t) + param->fp_lum_size);
        if (param->fp_lmd == NULL) {
                llapi_error(LLAPI_MSG_ERROR, -ENOMEM,
                            "error: allocation of %zu bytes for ioctl",
@@ -1558,7 +1557,8 @@ static int common_param_init(struct find_param *param, char *path)
        }
 
        param->fp_lmv_stripe_count = 256;
-       param->fp_lmv_md = malloc(lmv_user_md_size(param->fp_lmv_stripe_count,
+       param->fp_lmv_md = calloc(1,
+                                 lmv_user_md_size(param->fp_lmv_stripe_count,
                                                   LMV_MAGIC_V1));
        if (param->fp_lmv_md == NULL) {
                llapi_error(LLAPI_MSG_ERROR, -ENOMEM,
@@ -1617,13 +1617,38 @@ static DIR *opendir_parent(char *path)
 
 static int cb_get_dirstripe(char *path, DIR *d, struct find_param *param)
 {
+       int ret;
+
+again:
        param->fp_lmv_md->lum_stripe_count = param->fp_lmv_stripe_count;
        if (param->fp_get_default_lmv)
                param->fp_lmv_md->lum_magic = LMV_USER_MAGIC;
        else
                param->fp_lmv_md->lum_magic = LMV_MAGIC_V1;
 
-       return ioctl(dirfd(d), LL_IOC_LMV_GETSTRIPE, param->fp_lmv_md);
+       ret = ioctl(dirfd(d), LL_IOC_LMV_GETSTRIPE, param->fp_lmv_md);
+       if (errno == E2BIG && ret != 0) {
+               int stripe_count;
+               int lmv_size;
+
+               stripe_count = (__u32)param->fp_lmv_md->lum_stripe_count;
+               if (stripe_count <= param->fp_lmv_stripe_count)
+                       return ret;
+
+               free(param->fp_lmv_md);
+               param->fp_lmv_stripe_count = stripe_count;
+               lmv_size = lmv_user_md_size(stripe_count, LMV_MAGIC_V1);
+               param->fp_lmv_md = malloc(lmv_size);
+               if (param->fp_lmv_md == NULL) {
+                       llapi_error(LLAPI_MSG_ERROR, -ENOMEM,
+                                   "error: allocation of %d bytes for ioctl",
+                                   lmv_user_md_size(param->fp_lmv_stripe_count,
+                                                    LMV_MAGIC_V1));
+                       return -ENOMEM;
+               }
+               goto again;
+       }
+       return ret;
 }
 
 static int get_lmd_info(char *path, DIR *parent, DIR *dir,
@@ -3000,6 +3025,22 @@ static int cb_find_init(char *path, DIR *parent, DIR **dirp,
        if (decision == 0) {
                ret = get_lmd_info(path, parent, dir, param->fp_lmd,
                                   param->fp_lum_size);
+               if (ret == 0 && param->fp_lmd->lmd_lmm.lmm_magic == 0 &&
+                   (param->fp_check_pool || param->fp_check_stripe_count ||
+                    param->fp_check_stripe_size || param->fp_check_layout)) {
+                       struct lov_user_md *lmm = &param->fp_lmd->lmd_lmm;
+
+                       /* We need to "fake" the "use the default" values
+                        * since the lmm struct is zeroed out at this point. */
+                       lmm->lmm_magic = LOV_USER_MAGIC_V1;
+                       lmm->lmm_pattern = 0xFFFFFFFF;
+                       if (!param->fp_raw)
+                               ostid_set_seq(&lmm->lmm_oi,
+                                             FID_SEQ_LOV_DEFAULT);
+                       lmm->lmm_stripe_size = 0;
+                       lmm->lmm_stripe_count = 0;
+                       lmm->lmm_stripe_offset = -1;
+               }
                if (ret == 0 && param->fp_mdt_uuid != NULL) {
                        if (dir != NULL) {
                                ret = llapi_file_fget_mdtidx(dirfd(dir),
@@ -3261,7 +3302,7 @@ decided:
        return 0;
 }
 
-static int cb_mv_init(char *path, DIR *parent, DIR **dirp,
+static int cb_migrate_mdt_init(char *path, DIR *parent, DIR **dirp,
                      void *param_data, struct dirent64 *de)
 {
        struct find_param       *param = (struct find_param *)param_data;
@@ -3305,7 +3346,8 @@ static int cb_mv_init(char *path, DIR *parent, DIR **dirp,
        ret = ioctl(fd, LL_IOC_MIGRATE, rawbuf);
        if (ret != 0) {
                ret = -errno;
-               fprintf(stderr, "%s migrate failed %d\n", path, ret);
+               fprintf(stderr, "%s migrate failed: %s (%d)\n",
+                       path, strerror(-ret), ret);
                goto out;
        } else if (param->fp_verbose & VERBOSE_DETAIL) {
                fprintf(stdout, "migrate %s to MDT%d\n",
@@ -3334,9 +3376,23 @@ out:
        return ret;
 }
 
+int llapi_migrate_mdt(char *path, struct find_param *param)
+{
+       return param_callback(path, cb_migrate_mdt_init, cb_common_fini, param);
+}
+
 int llapi_mv(char *path, struct find_param *param)
 {
-       return param_callback(path, cb_mv_init, cb_common_fini, param);
+#if LUSTRE_VERSION_CODE > OBD_OCD_VERSION(2, 9, 53, 0)
+       static bool printed;
+
+       if (!printed) {
+               llapi_error(LLAPI_MSG_ERROR, -ESTALE,
+                           "llapi_mv() is deprecated, use llapi_migrate_mdt()\n");
+               printed = true;
+       }
+#endif
+       return llapi_migrate_mdt(path, param);
 }
 
 int llapi_find(char *path, struct find_param *param)
@@ -3716,61 +3772,6 @@ int llapi_quotactl(char *mnt, struct if_quotactl *qctl)
         return rc;
 }
 
-static int cb_quotachown(char *path, DIR *parent, DIR **dirp, void *data,
-                        struct dirent64 *de)
-{
-        struct find_param *param = (struct find_param *)data;
-       DIR *d = dirp == NULL ? NULL : *dirp;
-        lstat_t *st;
-        int rc;
-
-        LASSERT(parent != NULL || d != NULL);
-
-       rc = get_lmd_info(path, parent, d, param->fp_lmd, param->fp_lum_size);
-        if (rc) {
-                if (rc == -ENODATA) {
-                       if (!param->fp_obd_uuid && !param->fp_quiet)
-                                llapi_error(LLAPI_MSG_ERROR, -ENODATA,
-                                          "%s has no stripe info", path);
-                        rc = 0;
-                } else if (rc == -ENOENT) {
-                        rc = 0;
-                }
-                return rc;
-        }
-
-       st = &param->fp_lmd->lmd_st;
-
-        /* libc chown() will do extra check, and if the real owner is
-         * the same as the ones to set, it won't fall into kernel, so
-         * invoke syscall directly. */
-        rc = syscall(SYS_chown, path, -1, -1);
-        if (rc)
-                llapi_error(LLAPI_MSG_ERROR, errno,
-                            "error: chown %s", path);
-
-        rc = chmod(path, st->st_mode);
-        if (rc) {
-                rc = -errno;
-                llapi_error(LLAPI_MSG_ERROR, rc, "error: chmod %s (%hu)",
-                            path, st->st_mode);
-        }
-
-        return rc;
-}
-
-int llapi_quotachown(char *path, int flag)
-{
-        struct find_param param;
-
-        memset(&param, 0, sizeof(param));
-       param.fp_recursive = 1;
-       param.fp_verbose = 0;
-       param.fp_quiet = 1;
-
-        return param_callback(path, cb_quotachown, NULL, &param);
-}
-
 #include <pwd.h>
 #include <grp.h>
 #include <mntent.h>