#include "env-util.h"
#include "errno-util.h"
#include "fd-util.h"
+#include "fs-util.h"
#include "fileio.h"
#include "loop-util.h"
#include "missing_loop.h"
ret);
}
-int loop_device_make_by_path(
+int loop_device_make_by_path_at(
+ int dir_fd,
const char *path,
int open_flags,
uint32_t sector_size,
_cleanup_close_ int fd = -EBADF;
bool direct = false;
+ assert(dir_fd >= 0 || dir_fd == AT_FDCWD);
assert(path);
assert(ret);
assert(open_flags < 0 || IN_SET(open_flags, O_RDWR, O_RDONLY));
direct_flags = FLAGS_SET(loop_flags, LO_FLAGS_DIRECT_IO) ? O_DIRECT : 0;
rdwr_flags = open_flags >= 0 ? open_flags : O_RDWR;
- fd = open(path, basic_flags|direct_flags|rdwr_flags);
+ fd = xopenat(dir_fd, path, basic_flags|direct_flags|rdwr_flags, 0);
if (fd < 0 && direct_flags != 0) /* If we had O_DIRECT on, and things failed with that, let's immediately try again without */
- fd = open(path, basic_flags|rdwr_flags);
+ fd = xopenat(dir_fd, path, basic_flags|rdwr_flags, 0);
else
direct = direct_flags != 0;
if (fd < 0) {
if (open_flags >= 0 || !(ERRNO_IS_PRIVILEGE(r) || r == -EROFS))
return r;
- fd = open(path, basic_flags|direct_flags|O_RDONLY);
+ fd = xopenat(dir_fd, path, basic_flags|direct_flags|O_RDONLY, 0);
if (fd < 0 && direct_flags != 0) /* as above */
- fd = open(path, basic_flags|O_RDONLY);
+ fd = xopenat(dir_fd, path, basic_flags|O_RDONLY, 0);
else
direct = direct_flags != 0;
if (fd < 0)
direct ? "enabled" : "disabled",
direct != (direct_flags != 0) ? " (O_DIRECT was requested but not supported)" : "");
- return loop_device_make_internal(path, fd, open_flags, 0, 0, sector_size, loop_flags, lock_op, ret);
+ return loop_device_make_internal(
+ dir_fd == AT_FDCWD ? path : NULL,
+ fd,
+ open_flags,
+ /* offset = */ 0,
+ /* size = */ 0,
+ sector_size,
+ loop_flags,
+ lock_op,
+ ret);
}
int loop_device_make_by_path_memory(
/* SPDX-License-Identifier: LGPL-2.1-or-later */
#pragma once
+#include <fcntl.h>
+
#include "sd-device.h"
#include "macro.h"
#define LOOP_DEVICE_IS_FOREIGN(d) ((d)->nr < 0)
int loop_device_make(int fd, int open_flags, uint64_t offset, uint64_t size, uint32_t sector_size, uint32_t loop_flags, int lock_op, LoopDevice **ret);
-int loop_device_make_by_path(const char *path, int open_flags, uint32_t sector_size, uint32_t loop_flags, int lock_op, LoopDevice **ret);
+int loop_device_make_by_path_at(int dir_fd, const char *path, int open_flags, uint32_t sector_size, uint32_t loop_flags, int lock_op, LoopDevice **ret);
+static inline int loop_device_make_by_path(const char *path, int open_flags, uint32_t sector_size, uint32_t loop_flags, int lock_op, LoopDevice **ret) {
+ return loop_device_make_by_path_at(AT_FDCWD, path, open_flags, sector_size, loop_flags, lock_op, ret);
+}
int loop_device_make_by_path_memory(const char *path, int open_flags, uint32_t sector_size, uint32_t loop_flags, int lock_op, LoopDevice **ret);
int loop_device_open(sd_device *dev, int open_flags, int lock_op, LoopDevice **ret);
int loop_device_open_from_fd(int fd, int open_flags, int lock_op, LoopDevice **ret);