From 9dd3216ffcf2c95e35ef097a0c8c3f2898bbde62 Mon Sep 17 00:00:00 2001
From: "graham.gower" <graham.gower@e8e0d7a0-c8d9-11dd-a880-a1081c7ac358>
Date: Mon, 16 Nov 2009 00:13:12 +0000
Subject: [PATCH] Add a function for recursive directory removal and use that
 instead of xsystem.

git-svn-id: http://opkg.googlecode.com/svn/trunk@311 e8e0d7a0-c8d9-11dd-a880-a1081c7ac358
---
 libopkg/file_util.c | 81 +++++++++++++++++++++++++++++++++++++++++++++
 libopkg/file_util.h |  1 +
 libopkg/opkg_cmd.c  |  6 +---
 libopkg/opkg_conf.c |  7 +---
 4 files changed, 84 insertions(+), 11 deletions(-)

diff --git a/libopkg/file_util.c b/libopkg/file_util.c
index 902b8c9..08c801a 100644
--- a/libopkg/file_util.c
+++ b/libopkg/file_util.c
@@ -18,6 +18,7 @@
 #include "includes.h"
 #include <sys/types.h>
 #include <sys/stat.h>
+#include <dirent.h>
 
 #include "sprintf_alloc.h"
 #include "file_util.h"
@@ -224,3 +225,83 @@ char *file_sha256sum_alloc(const char *file_name)
 }
 
 #endif
+
+
+int
+rm_r(const char *path)
+{
+	int ret = 0;
+	DIR *dir;
+	struct dirent *dent;
+
+	dir = opendir(path);
+	if (dir == NULL) {
+		perror_msg("%s: opendir(%s)", __FUNCTION__, path);
+		return -1;
+	}
+
+	if (fchdir(dirfd(dir)) == -1) {
+		perror_msg("%s: fchdir(%s)", __FUNCTION__, path);
+		closedir(dir);
+		return -1;
+	}
+
+	while (1) {
+		errno = 0;
+		if ((dent = readdir(dir)) == NULL) {
+			if (errno) {
+				perror_msg("%s: readdir(%s)",
+						__FUNCTION__, path);
+				ret = -1;
+			}
+			break;
+		}
+
+		if (!strcmp(dent->d_name, ".") || !strcmp(dent->d_name, ".."))
+			continue;
+
+#ifdef _BSD_SOURCE
+		if (dent->d_type == DT_DIR) {
+			if ((ret = rm_r(dent->d_name)) == -1)
+				break;
+			continue;
+		} else if (dent->d_type == DT_UNKNOWN)
+#endif
+		{
+			struct stat st;
+			if ((ret = lstat(dent->d_name, &st)) == -1) {
+				perror_msg("%s: lstat(%s)",
+						__FUNCTION__, dent->d_name);
+				break;
+			}
+			if (S_ISDIR(st.st_mode)) {
+				if ((ret = rm_r(dent->d_name)) == -1)
+					break;
+				continue;
+			}
+		}
+
+		if ((ret = unlink(dent->d_name)) == -1) {
+			perror_msg("%s: unlink(%s)",
+					__FUNCTION__, dent->d_name);
+			break;
+		}
+	}
+
+	if (chdir("..") == -1) {
+		ret = -1;
+		perror_msg("%s: chdir(%s/..)", __FUNCTION__, path);
+	}
+
+	if (rmdir(path) == -1 ) {
+		ret = -1;
+		perror_msg("%s: rmdir(%s)", __FUNCTION__, path);
+	}
+
+	if (closedir(dir) == -1) {
+		ret = -1;
+		perror_msg("%s: closedir(%s)", __FUNCTION__, path);
+	}
+
+	return ret;
+}
diff --git a/libopkg/file_util.h b/libopkg/file_util.h
index 184e04d..cfad551 100644
--- a/libopkg/file_util.h
+++ b/libopkg/file_util.h
@@ -26,5 +26,6 @@ int file_copy(const char *src, const char *dest);
 int file_mkdir_hier(const char *path, long mode);
 char *file_md5sum_alloc(const char *file_name);
 char *file_sha256sum_alloc(const char *file_name);
+int rm_r(const char *path);
 
 #endif
diff --git a/libopkg/opkg_cmd.c b/libopkg/opkg_cmd.c
index 9a49082..c40694e 100644
--- a/libopkg/opkg_cmd.c
+++ b/libopkg/opkg_cmd.c
@@ -323,7 +323,6 @@ static opkg_intercept_t opkg_prep_intercepts(opkg_conf_t *conf)
 
 static int opkg_finalize_intercepts(opkg_intercept_t ctx)
 {
-    char *cmd;
     DIR *dir;
     int err = 0;
 
@@ -349,10 +348,7 @@ static int opkg_finalize_intercepts(opkg_intercept_t ctx)
     } else
 	perror (ctx->statedir);
 	
-    sprintf_alloc (&cmd, "rm -rf %s", ctx->statedir);
-    err = xsystem (cmd);
-    free (cmd);
-
+    rm_r(ctx->statedir);
     free (ctx->statedir);
     free (ctx);
 
diff --git a/libopkg/opkg_conf.c b/libopkg/opkg_conf.c
index 425c72b..bd73317 100644
--- a/libopkg/opkg_conf.c
+++ b/libopkg/opkg_conf.c
@@ -341,12 +341,7 @@ int opkg_conf_init(opkg_conf_t *conf, const args_t *args)
 
 void opkg_conf_deinit(opkg_conf_t *conf)
 {
-     int err;
-     char *cmd;
-
-     sprintf_alloc(&cmd, "rm -fr %s\n", conf->tmp_dir);
-     err = xsystem(cmd);
-     free(cmd);
+     rm_r(conf->tmp_dir);
 
      free(conf->tmp_dir);
      free(conf->lists_dir);
-- 
2.25.1