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>

diff --git a/findutils/find.c b/findutils/find.c
index 56a7ed3ab9e0cb463efc8e97b197fbdfffbe00af..83aa63f927bfd42b0a4203ac1b6eedeb29ef7700 100644 (file)
--- 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);