[Buildroot] [PATCH 1/2] package/makedevs: add recursive option

[Angelo Compagnucci <angelo.compagnucci@gmail.com>]

This patch adds the possibilty to change owner/permission
of a folder recursively.

Signed-off-by: Angelo Compagnucci <angelo.compagnucci@gmail.com>
---
 package/makedevs/makedevs.c | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/package/makedevs/makedevs.c b/package/makedevs/makedevs.c
index ab90b93..e575427 100644
--- a/package/makedevs/makedevs.c
+++ b/package/makedevs/makedevs.c
@@ -34,6 +34,8 @@
 #ifndef __APPLE__
 #include <sys/sysmacros.h>     /* major() and minor() */
 #endif
+#include <ftw.h>
+
 
 const char *bb_applet_name;
 
@@ -332,6 +334,7 @@ void bb_show_usage(void)
 	fprintf(stderr, "Where name is the file name,  type can be one of:\n");
 	fprintf(stderr, "      f       A regular file\n");
 	fprintf(stderr, "      d       Directory\n");
+	fprintf(stderr, "      r       Directory recursively\n");
 	fprintf(stderr, "      c       Character special device file\n");
 	fprintf(stderr, "      b       Block special device file\n");
 	fprintf(stderr, "      p       Fifo (named pipe)\n");
@@ -364,6 +367,20 @@ void bb_show_usage(void)
 	exit(1);
 }
 
+bb_recursive(const char *full_name, uid_t uid, gid_t gid, unsigned int mode){
+
+	int chmod_chown(const char *fpath, const struct stat *sb,
+		int tflag, struct FTW *ftwbuf) {
+		if (chown(fpath, uid, gid) == -1) return -1;
+		if ((mode != -1)) {
+			if (chmod(fpath, mode) < 0) return -1;
+		}
+		return 0;
+	}
+
+	return nftw(full_name, chmod_chown, 20, FTW_MOUNT | FTW_PHYS);
+}
+
 int main(int argc, char **argv)
 {
 	int opt;
@@ -474,6 +491,12 @@ int main(int argc, char **argv)
 				ret = EXIT_FAILURE;
 				goto loop;
 			}
+		} else if (type == 'r') {
+			if (bb_recursive(full_name, uid, gid, mode) < 0) {
+				bb_perror_msg("line %d: recursive failed for %s", linenum, full_name);
+				ret = EXIT_FAILURE;
+				goto loop;
+			}
 		} else
 		{
 			dev_t rdev;
-- 
1.9.1