openadk/package/busybox/patches/002-find-empty.patch

diff -Nur busybox-1.17.0.orig/findutils/find.c busybox-1.17.0/findutils/find.c
--- busybox-1.17.0.orig/findutils/find.c	2010-06-24 04:40:43.000000000 +0200
+++ busybox-1.17.0/findutils/find.c	2010-07-08 12:33:55.759015289 +0200
@@ -133,6 +133,14 @@
 //config:	help
 //config:	  Support the 'find -inum' option for searching by inode number.
 //config:
+//config:config FEATURE_FIND_EMPTY
+//config:       bool "Enable -empty option matching empty files and directories"
+//config:       default y
+//config:       depends on FIND
+//config:       help
+//config:         Support the 'find -empty' option for searching empty files 
+//config:         and directories.
+//config:
 //config:config FEATURE_FIND_EXEC
 //config:	bool "Enable -exec: execute commands"
 //config:	default y
@@ -270,6 +278,7 @@
 IF_FEATURE_FIND_CONTEXT(ACTS(context, security_context_t context;))
 IF_FEATURE_FIND_PAREN(  ACTS(paren, action ***subexpr;))
 IF_FEATURE_FIND_PRUNE(  ACTS(prune))
+IF_FEATURE_FIND_EMPTY(  ACTS(empty))
 IF_FEATURE_FIND_DELETE( ACTS(delete))
 IF_FEATURE_FIND_EXEC(   ACTS(exec,  char **exec_argv; unsigned *subst_count; int exec_argc;))
 IF_FEATURE_FIND_GROUP(  ACTS(group, gid_t gid;))
@@ -519,6 +528,34 @@
 	return exec_actions(ap->subexpr, fileName, statbuf);
 }
 #endif
+#if ENABLE_FEATURE_FIND_EMPTY
+ACTF(empty)
+{
+	DIR *d;
+	struct dirent *dp;
+	bool empty = TRUE;
+
+	if (S_ISDIR(statbuf->st_mode)) {
+		d = opendir(fileName);
+		if (d == NULL)
+			bb_simple_perror_msg(fileName);
+		for (dp = readdir(d); dp; dp = readdir(d)) {
+			if (dp->d_name[0] != '.' ||
+				(dp->d_name[1] != '\0' &&
+				(dp->d_name[1] != '.' ||
+				dp->d_name[2] != '\0'))) {
+					empty = FALSE;
+					break;
+			}
+		}
+		closedir(d);
+		return(empty);
+	} else if (S_ISREG(statbuf->st_mode))
+		return (statbuf->st_size == 0);
+	else
+		return FALSE;
+}
+#endif
 #if ENABLE_FEATURE_FIND_SIZE
 ACTF(size)
 {
@@ -686,6 +723,7 @@
 	IF_FEATURE_FIND_PRINT0( PARM_print0    ,)
 	IF_FEATURE_FIND_DEPTH(  PARM_depth     ,)
 	IF_FEATURE_FIND_PRUNE(  PARM_prune     ,)
+	IF_FEATURE_FIND_EMPTY(  PARM_empty     ,)
 	IF_FEATURE_FIND_DELETE( PARM_delete    ,)
 	IF_FEATURE_FIND_EXEC(   PARM_exec      ,)
 	IF_FEATURE_FIND_PAREN(  PARM_char_brace,)
@@ -720,6 +758,7 @@
 	IF_FEATURE_FIND_PRINT0( "-print0\0" )
 	IF_FEATURE_FIND_DEPTH(  "-depth\0"  )
 	IF_FEATURE_FIND_PRUNE(  "-prune\0"  )
+	IF_FEATURE_FIND_EMPTY(  "-empty\0"  )
 	IF_FEATURE_FIND_DELETE( "-delete\0" )
 	IF_FEATURE_FIND_EXEC(   "-exec\0"   )
 	IF_FEATURE_FIND_PAREN(  "(\0"       )
@@ -839,6 +878,12 @@
 			(void) ALLOC_ACTION(prune);
 		}
 #endif
+#if ENABLE_FEATURE_FIND_EMPTY
+		else if (parm == PARM_empty) {
+			IF_FEATURE_FIND_NOT( invert_flag = 0; )
+			(void) ALLOC_ACTION(empty);
+		}
+#endif
 #if ENABLE_FEATURE_FIND_DELETE
 		else if (parm == PARM_delete) {
 			G.need_print = 0;