chown: support long options

function                                             old     new   delta
chown_longopts                                         -      81     +81
chown_main                                           182     192     +10

Signed-off-by: Matheus Izvekov <mizvekov@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

2 files changed, 24 insertions, 1 deletions

diff --git a/coreutils/Config.in b/coreutils/Config.in
index 49e285982..1e32e2664 100644
--- a/coreutils/Config.in
+++ b/coreutils/Config.in
@@ -52,6 +52,13 @@ config CHOWN
           chown is used to change the user and/or group ownership
           of files.
 
+config FEATURE_CHOWN_LONG_OPTIONS
+        bool "Enable long options"
+        default n
+        depends on CHOWN && LONG_OPTS
+        help
+          Enable use of long options
+
 config CHROOT
         bool "chroot"
         default n
diff --git a/coreutils/chown.c b/coreutils/chown.c
index 2d8e556f0..d29f8252a 100644
--- a/coreutils/chown.c
+++ b/coreutils/chown.c
@@ -8,7 +8,6 @@
  */
 
 /* BB_AUDIT SUSv3 defects - none? */
-/* BB_AUDIT GNU defects - unsupported long options. */
 /* http://www.opengroup.org/onlinepubs/007904975/utilities/chown.html */
 
 #include "libbb.h"
@@ -37,6 +36,20 @@
 #define BIT_TRAVERSE_TOP (0x20|0x40)
 #define OPT_TRAVERSE_TOP (IF_DESKTOP(opt & BIT_TRAVERSE_TOP) IF_NOT_DESKTOP(0))
 
+#if ENABLE_FEATURE_CHOWN_LONG_OPTIONS
+static const char chown_longopts[] ALIGN1 =
+        "recursive\0"        No_argument   "R"
+        "dereference\0"      No_argument   "\xff"
+        "no-dereference\0"   No_argument   "h"
+# if ENABLE_DESKTOP
+        "changes\0"          No_argument   "c"
+        "silent\0"           No_argument   "f"
+        "quiet\0"            No_argument   "f"
+        "verbose\0"          No_argument   "v"
+# endif
+        ;
+#endif
+
 typedef int (*chown_fptr)(const char *, uid_t, gid_t);
 
 struct param_t {
@@ -78,6 +91,9 @@ int chown_main(int argc UNUSED_PARAM, char **argv)
         param.ugid.gid = -1;
         param.chown_func = chown;
 
+#if ENABLE_FEATURE_CHOWN_LONG_OPTIONS
+        applet_long_options = chown_longopts;
+#endif
         opt_complementary = "-2";
         opt = getopt32(argv, OPT_STR);
         argv += optind;