static int
recursive_remove_internal(const char *path, int missing_ok, int cwd)
{
DIR *dir;
struct dirent *de;
const char *sub_path;
char *subdir;
int did_chdir, rv;
/*
* If the argument is longer than PATH_MAX, long_remove
* will try to shorten it using chdir. So before returning,
* make sure to fchdir back to the original cwd.
*/
sub_path = path;
if (long_remove(&sub_path, missing_ok, &did_chdir) == 0)
rv = 0;
else if (errno != ENOTEMPTY) /* Other errors are terminal. */
rv = -1;
else
rv = 1;
if (rv != 1) {
if (did_chdir && safe_fchdir(cwd) == -1 && rv == 0)
rv = -1;
return rv;
}
if ((dir = opendir(sub_path)) == NULL) {
if (errno == EMFILE)
warn("opendir failed");
return -1;
}
if (did_chdir && fchdir(cwd) == -1)
return -1;
rv = 0;
while ((de = readdir(dir)) != NULL) {
if (strcmp(de->d_name, ".") == 0)
continue;
if (strcmp(de->d_name, "..") == 0)
continue;
subdir = xasprintf("%s/%s", path, de->d_name);
rv = recursive_remove_internal(subdir, 1, cwd);
free(subdir);
}
closedir(dir);
safe_fchdir(cwd);
rv |= long_remove(&path, missing_ok, &did_chdir);
if (did_chdir && safe_fchdir(cwd) == -1 && rv == 0)
rv = -1;
return rv;
}
static void
add_dir(struct sfs_fs *sfs, struct cache_inode *parent, const char *dirname, int curfd, int fd, ino_t real) {
assert(search_cache_inode(sfs, real) == NULL);
struct cache_inode *current = alloc_cache_inode(sfs, real, 0, SFS_TYPE_DIR);
safe_fchdir(fd), subpath_push(sfs, dirname);
open_dir(sfs, current, parent);
safe_fchdir(curfd), subpath_pop(sfs);
add_entry(sfs, parent, current, dirname);
}
int
create_img(struct sfs_fs *sfs, const char *home) {
int curfd, homefd;
if ((curfd = open(".", O_RDONLY)) < 0) {
bug("get current fd failed.\n");
}
if ((homefd = open(home, O_RDONLY | O_NOFOLLOW)) < 0) {
bug("open home directory '%s' failed.\n", home);
}
safe_fchdir(homefd);
open_dir(sfs, sfs->root, sfs->root);
safe_fchdir(curfd);
close(curfd), close(homefd);
close_sfs(sfs);
return 0;
}
