LU-11188 lfs: add "--perm" option to "lfs find"

[fs/lustre-release.git] / lustre / utils / liblustreapi.c

diff --git a/lustre/utils/liblustreapi.c b/lustre/utils/liblustreapi.c
index 03dbfad..52a9b1c 100644 (file)
--- a/lustre/utils/liblustreapi.c
+++ b/lustre/utils/liblustreapi.c
@@ -4831,6 +4831,34 @@ static int fget_projid(int fd, int *projid)
        return 0;
 }
 
+/*
+ * Check that the file's permissions in *st matches the one in find_param
+ */
+static int check_file_permissions(const struct find_param *param,
+                       const lstat_t *st)
+{
+       const mode_t st_mode = st->st_mode & 07777;
+       int decision = 0;
+
+       switch (param->fp_perm_sign) {
+       case LFS_FIND_PERM_EXACT:
+               decision = (st_mode == param->fp_perm);
+               break;
+       case LFS_FIND_PERM_ALL:
+               decision = ((st_mode & param->fp_perm) == param->fp_perm);
+               break;
+       case LFS_FIND_PERM_ANY:
+               decision = ((st_mode & param->fp_perm) != 0);
+               break;
+       }
+
+       if ((param->fp_exclude_perm && decision)
+               || (!param->fp_exclude_perm && !decision))
+               return -1;
+       else
+               return 1;
+}
+
 static int cb_find_init(char *path, int p, int *dp,
                        void *data, struct dirent64 *de)
 {
@@ -4885,7 +4913,7 @@ static int cb_find_init(char *path, int p, int *dp,
            param->fp_check_size || param->fp_check_blocks ||
            find_check_lmm_info(param) ||
            param->fp_check_mdt_count || param->fp_hash_type ||
-           param->fp_check_hash_flag)
+           param->fp_check_hash_flag || param->fp_perm_sign)
                decision = 0;
 
        if (param->fp_type != 0 && checked_type == 0)
@@ -5240,6 +5268,9 @@ obd_matches:
              (param->fp_lazy && flags & OBD_MD_FLLAZYBLOCKS)))
                decision = 0;
 
+       if (param->fp_perm_sign)
+               decision = 0;
+
        /*
         * If file still fits the request, ask ost for updated info.
         * The regular stat is almost of the same speed as some new
@@ -5296,6 +5327,13 @@ obd_matches:
                                goto out;
                        }
                }
+
+               /* Check the file permissions from the stat info */
+               if (param->fp_perm_sign) {
+                       decision = check_file_permissions(param, &st);
+                       if (decision == -1)
+                               goto decided;
+               }
        }
 
        if (param->fp_check_size) {