find: support -perm /BITS. Closes 7340

function                                             old     new   delta
parse_params                                        1487    1497     +10
func_perm                                             57      61      +4
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 2/0 up/down: 14/0)               Total: 14 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 4 insertions, 4 deletions

diff --git a/findutils/find.c b/findutils/find.c
index 56a7ed3ab..83aa63f92 100644
--- a/findutils/find.c
+++ b/findutils/find.c
@@ -558,8 +558,8 @@ ACTF(type)
 #if ENABLE_FEATURE_FIND_PERM
 ACTF(perm)
 {
-        /* -perm +mode: at least one of perm_mask bits are set */
-        if (ap->perm_char == '+')
+        /* -perm [+/]mode: at least one of perm_mask bits are set */
+        if (ap->perm_char == '+' || ap->perm_char == '/')
                 return (statbuf->st_mode & ap->perm_mask) != 0;
         /* -perm -mode: all of perm_mask are set */
         if (ap->perm_char == '-')
@@ -1252,14 +1252,14 @@ static action*** parse_params(char **argv)
 /* -perm BITS   File's mode bits are exactly BITS (octal or symbolic).
  *              Symbolic modes use mode 0 as a point of departure.
  * -perm -BITS  All of the BITS are set in file's mode.
- * -perm +BITS  At least one of the BITS is set in file's mode.
+ * -perm [+/]BITS  At least one of the BITS is set in file's mode.
  */
                 else if (parm == PARM_perm) {
                         action_perm *ap;
                         dbg("%d", __LINE__);
                         ap = ALLOC_ACTION(perm);
                         ap->perm_char = arg1[0];
-                        arg1 = plus_minus_num(arg1);
+                        arg1 = (arg1[0] == '/' ? arg1+1 : plus_minus_num(arg1));
                         /*ap->perm_mask = 0; - ALLOC_ACTION did it */
                         if (!bb_parse_mode(arg1, &ap->perm_mask))
                                 bb_error_msg_and_die("invalid mode '%s'", arg1);