Move dir_iterator_t from libio into libsquashfs

Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>

1 files changed, 0 insertions, 241 deletions

diff --git a/lib/io/src/unix/dir_iterator.c b/lib/io/src/unix/dir_iterator.c
deleted file mode 100644
index 74ac953..0000000
--- a/lib/io/src/unix/dir_iterator.c
+++ /dev/null
@@ -1,241 +0,0 @@
-/* SPDX-License-Identifier: LGPL-3.0-or-later */
-/*
- * dir_iterator.c
- *
- * Copyright (C) 2023 David Oberhollenzer <goliath@infraroot.at>
- */
-#include "config.h"
-#include "io/dir_iterator.h"
-#include "util/util.h"
-#include "sqfs/error.h"
-#include "sqfs/io.h"
-
-#include <sys/stat.h>
-#include <stdlib.h>
-#include <dirent.h>
-#include <string.h>
-#include <errno.h>
-
-typedef struct {
-	sqfs_dir_iterator_t base;
-
-	struct dirent *ent;
-	struct stat sb;
-	dev_t device;
-	int state;
-	DIR *dir;
-} unix_dir_iterator_t;
-
-static void dir_destroy(sqfs_object_t *obj)
-{
-	unix_dir_iterator_t *it = (unix_dir_iterator_t *)obj;
-
-	closedir(it->dir);
-	free(it);
-}
-
-static int dir_read_link(sqfs_dir_iterator_t *base, char **out)
-{
-	unix_dir_iterator_t *it = (unix_dir_iterator_t *)base;
-	ssize_t ret;
-	size_t size;
-	char *str;
-
-	*out = NULL;
-
-	if (it->state < 0)
-		return it->state;
-
-	if (it->state > 0 || it->ent == NULL)
-		return SQFS_ERROR_NO_ENTRY;
-
-	if ((sizeof(it->sb.st_size) > sizeof(size_t)) &&
-	    it->sb.st_size > SIZE_MAX) {
-		return SQFS_ERROR_ALLOC;
-	}
-
-	if (SZ_ADD_OV((size_t)it->sb.st_size, 1, &size))
-		return SQFS_ERROR_ALLOC;
-
-	str = calloc(1, size);
-	if (str == NULL)
-		return SQFS_ERROR_ALLOC;
-
-	ret = readlinkat(dirfd(it->dir), it->ent->d_name,
-			 str, (size_t)it->sb.st_size);
-	if (ret < 0) {
-		free(str);
-		return SQFS_ERROR_IO;
-	}
-
-	str[ret] = '\0';
-
-	*out = str;
-	return 0;
-}
-
-static int dir_next(sqfs_dir_iterator_t *base, sqfs_dir_entry_t **out)
-{
-	unix_dir_iterator_t *it = (unix_dir_iterator_t *)base;
-
-	*out = NULL;
-	if (it->state != 0)
-		return it->state;
-
-	errno = 0;
-	it->ent = readdir(it->dir);
-
-	if (it->ent == NULL) {
-		if (errno != 0) {
-			it->state = SQFS_ERROR_IO;
-		} else {
-			it->state = 1;
-		}
-
-		return it->state;
-	}
-
-	if (fstatat(dirfd(it->dir), it->ent->d_name,
-		    &it->sb, AT_SYMLINK_NOFOLLOW)) {
-		it->state = SQFS_ERROR_IO;
-		return it->state;
-	}
-
-	*out = sqfs_dir_entry_create(it->ent->d_name, it->sb.st_mode, 0);
-	if ((*out) == NULL) {
-		it->state = SQFS_ERROR_ALLOC;
-		return it->state;
-	}
-
-	(*out)->mtime = it->sb.st_mtime;
-	(*out)->dev = it->sb.st_dev;
-	(*out)->rdev = it->sb.st_rdev;
-	(*out)->uid = it->sb.st_uid;
-	(*out)->gid = it->sb.st_gid;
-
-	if (S_ISREG(it->sb.st_mode))
-		(*out)->size = it->sb.st_size;
-
-	if ((*out)->dev != it->device)
-		(*out)->flags |= SQFS_DIR_ENTRY_FLAG_MOUNT_POINT;
-
-	return it->state;
-}
-
-static void dir_ignore_subdir(sqfs_dir_iterator_t *it)
-{
-	(void)it;
-}
-
-static int dir_open_file_ro(sqfs_dir_iterator_t *base, sqfs_istream_t **out)
-{
-	unix_dir_iterator_t *it = (unix_dir_iterator_t *)base;
-	int fd, ret;
-
-	*out = NULL;
-	if (it->state < 0)
-		return it->state;
-
-	if (it->state > 0 || it->ent == NULL)
-		return SQFS_ERROR_NO_ENTRY;
-
-	fd = openat(dirfd(it->dir), it->ent->d_name, O_RDONLY);
-	if (fd < 0)
-		return SQFS_ERROR_IO;
-
-	ret = sqfs_istream_open_handle(out, it->ent->d_name,
-				       fd, SQFS_FILE_OPEN_READ_ONLY);
-	if (ret != 0) {
-		int err = errno;
-		close(fd);
-		errno = err;
-	}
-	return ret;
-}
-
-static int dir_read_xattr(sqfs_dir_iterator_t *it, sqfs_xattr_t **out)
-{
-	(void)it;
-	*out = NULL;
-	return 0;
-}
-
-static int create_iterator(sqfs_dir_iterator_t **out, DIR *dir);
-
-static int dir_open_subdir(sqfs_dir_iterator_t *base, sqfs_dir_iterator_t **out)
-{
-	const unix_dir_iterator_t *it = (const unix_dir_iterator_t *)base;
-	DIR *dir;
-	int fd;
-
-	*out = NULL;
-
-	if (it->state < 0)
-		return it->state;
-
-	if (it->state > 0 || it->ent == NULL)
-		return SQFS_ERROR_NO_ENTRY;
-
-	fd = openat(dirfd(it->dir), it->ent->d_name, O_RDONLY | O_DIRECTORY);
-	if (fd < 0) {
-		if (errno == ENOTDIR)
-			return SQFS_ERROR_NOT_DIR;
-		return SQFS_ERROR_IO;
-	}
-
-	dir = fdopendir(fd);
-	if (dir == NULL) {
-		int err = errno;
-		close(fd);
-		errno = err;
-		return SQFS_ERROR_IO;
-	}
-
-	return create_iterator(out, dir);
-}
-
-static int create_iterator(sqfs_dir_iterator_t **out, DIR *dir)
-{
-	unix_dir_iterator_t *it = calloc(1, sizeof(*it));
-
-	if (it == NULL) {
-		closedir(dir);
-		return SQFS_ERROR_ALLOC;
-	}
-
-	it->dir = dir;
-
-	if (fstat(dirfd(dir), &it->sb)) {
-		int err = errno;
-		closedir(dir);
-		free(it);
-		errno = err;
-		return SQFS_ERROR_IO;
-	}
-
-	sqfs_object_init(it, dir_destroy, NULL);
-	it->device = it->sb.st_dev;
-	((sqfs_dir_iterator_t *)it)->next = dir_next;
-	((sqfs_dir_iterator_t *)it)->read_link = dir_read_link;
-	((sqfs_dir_iterator_t *)it)->open_subdir = dir_open_subdir;
-	((sqfs_dir_iterator_t *)it)->ignore_subdir = dir_ignore_subdir;
-	((sqfs_dir_iterator_t *)it)->open_file_ro = dir_open_file_ro;
-	((sqfs_dir_iterator_t *)it)->read_xattr = dir_read_xattr;
-
-	*out = (sqfs_dir_iterator_t *)it;
-	return 0;
-}
-
-sqfs_dir_iterator_t *dir_iterator_create(const char *path)
-{
-	sqfs_dir_iterator_t *out;
-	DIR *dir;
-
-	dir = opendir(path);
-	if (dir == NULL || create_iterator(&out, dir) != 0) {
-		perror(path);
-		return NULL;
-	}
-
-	return out;
-}