From 008e73b5728b19c7ba6e746e279c4bc8a1935f0d Mon Sep 17 00:00:00 2001
From: Denys Vlasenko <vda.linux@googlemail.com>
Date: Fri, 6 Jul 2018 21:04:41 +0200
Subject: [PATCH] find: implement -executable

function                                             old     new   delta
func_executable                                        -      19     +19
parse_params                                        1505    1519     +14
static.params                                        216     228     +12
packed_usage                                       32847   32855      +8
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 3/0 up/down: 53/0)               Total: 53 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
---
 findutils/find.c | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/findutils/find.c b/findutils/find.c
index 72732615b..6407c6c5a 100644
--- a/findutils/find.c
+++ b/findutils/find.c
@@ -95,6 +95,11 @@
 //config:	Enable searching based on file type (file,
 //config:	directory, socket, device, etc.).
 //config:
+//config:config FEATURE_FIND_EXECUTABLE
+//config:	bool "Enable -executable: file is executable"
+//config:	default y
+//config:	depends on FIND
+//config:
 //config:config FEATURE_FIND_XDEV
 //config:	bool "Enable -xdev: 'stay in filesystem'"
 //config:	default y
@@ -272,6 +277,9 @@
 //usage:	IF_FEATURE_FIND_TYPE(
 //usage:     "\n	-type X		File type is X (one of: f,d,l,b,c,s,p)"
 //usage:	)
+//usage:	IF_FEATURE_FIND_EXECUTABLE(
+//usage:     "\n	-executable	File is executable"
+//usage:	)
 //usage:	IF_FEATURE_FIND_PERM(
 //usage:     "\n	-perm MASK	At least one mask bit (+MASK), all bits (-MASK),"
 //usage:     "\n			or exactly MASK bits are set in file's mode"
@@ -375,6 +383,7 @@ IF_FEATURE_FIND_PATH(   ACTS(path,  const char *pattern; bool ipath;))
 IF_FEATURE_FIND_REGEX(  ACTS(regex, regex_t compiled_pattern;))
 IF_FEATURE_FIND_PRINT0( ACTS(print0))
 IF_FEATURE_FIND_TYPE(   ACTS(type,  int type_mask;))
+IF_FEATURE_FIND_EXECUTABLE(ACTS(executable))
 IF_FEATURE_FIND_PERM(   ACTS(perm,  char perm_char; mode_t perm_mask;))
 IF_FEATURE_FIND_MTIME(  ACTS(mtime, char mtime_char; unsigned mtime_days;))
 IF_FEATURE_FIND_MMIN(   ACTS(mmin,  char mmin_char; unsigned mmin_mins;))
@@ -578,6 +587,12 @@ ACTF(type)
 	return ((statbuf->st_mode & S_IFMT) == ap->type_mask);
 }
 #endif
+#if ENABLE_FEATURE_FIND_EXECUTABLE
+ACTF(executable)
+{
+	return access(fileName, X_OK) == 0;
+}
+#endif
 #if ENABLE_FEATURE_FIND_PERM
 ACTF(perm)
 {
@@ -975,6 +990,7 @@ static action*** parse_params(char **argv)
 	IF_FEATURE_FIND_QUIT(   PARM_quit      ,)
 	IF_FEATURE_FIND_DELETE( PARM_delete    ,)
 	IF_FEATURE_FIND_EXEC(   PARM_exec      ,)
+	IF_FEATURE_FIND_EXECUTABLE(PARM_executable,)
 	IF_FEATURE_FIND_PAREN(  PARM_char_brace,)
 	/* All options/actions starting from here require argument */
 	                        PARM_name      ,
@@ -1019,6 +1035,7 @@ static action*** parse_params(char **argv)
 	IF_FEATURE_FIND_QUIT(   "-quit\0"  )
 	IF_FEATURE_FIND_DELETE( "-delete\0" )
 	IF_FEATURE_FIND_EXEC(   "-exec\0"   )
+	IF_FEATURE_FIND_EXECUTABLE("-executable\0")
 	IF_FEATURE_FIND_PAREN(  "(\0"       )
 	/* All options/actions starting from here require argument */
 	                        "-name\0"
@@ -1288,6 +1305,11 @@ static action*** parse_params(char **argv)
 			dbg("created:type mask:%x", ap->type_mask);
 		}
 #endif
+#if ENABLE_FEATURE_FIND_EXECUTABLE
+		else if (parm == PARM_executable) {
+			(void) ALLOC_ACTION(executable);
+		}
+#endif
 #if ENABLE_FEATURE_FIND_PERM
 /* -perm BITS   File's mode bits are exactly BITS (octal or symbolic).
  *              Symbolic modes use mode 0 as a point of departure.