diff options
Diffstat (limited to 'util-linux/switch_root.c')
| -rw-r--r-- | util-linux/switch_root.c | 35 |
1 files changed, 14 insertions, 21 deletions
diff --git a/util-linux/switch_root.c b/util-linux/switch_root.c index f2674b5..901c0b8 100644 --- a/util-linux/switch_root.c +++ b/util-linux/switch_root.c @@ -68,11 +68,22 @@ extern int capget(cap_user_header_t header, const cap_user_data_t data); # define MS_MOVE 8192 #endif +static void delete_contents(const char *directory, dev_t rootdev); + +static int FAST_FUNC rmrf(const char *directory, struct dirent *d, void *rootdevp) +{ + char *newdir = concat_subpath_file(directory, d->d_name); + if (newdir) { // not . or .. + // Recurse to delete contents + delete_contents(newdir, *(dev_t*)rootdevp); + free(newdir); + } + return 0; +} + // Recursively delete contents of rootfs static void delete_contents(const char *directory, dev_t rootdev) { - DIR *dir; - struct dirent *d; struct stat st; // Don't descend into other filesystems @@ -81,25 +92,7 @@ static void delete_contents(const char *directory, dev_t rootdev) // Recursively delete the contents of directories if (S_ISDIR(st.st_mode)) { - dir = opendir(directory); - if (dir) { - while ((d = readdir(dir))) { - char *newdir = d->d_name; - - // Skip . and .. - if (DOT_OR_DOTDOT(newdir)) - continue; - - // Recurse to delete contents - newdir = concat_path_file(directory, newdir); - delete_contents(newdir, rootdev); - free(newdir); - } - closedir(dir); - - // Directory should now be empty, zap it - rmdir(directory); - } + iterate_on_dir(directory, rmrf, &rootdev); } else { // It wasn't a directory, zap it unlink(directory); |