Add a function for recursive directory removal and use that instead of xsystem.

[oweals/opkg-lede.git] / libopkg / file_util.c

diff --git a/libopkg/file_util.c b/libopkg/file_util.c
index 902b8c935477d35e7da8a26434f2d087cfa4eae4..08c801a1501c261968ba842319aac3fdeeb8cdbe 100644 (file)
--- 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;
+}