| /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ |
| #ifndef _UAPI_LINUX_OPENAT2_H |
| #define _UAPI_LINUX_OPENAT2_H |
| |
| #include <linux/types.h> |
| |
| /* |
| * Arguments for how openat2(2) should open the target path. If only @flags and |
| * @mode are non-zero, then openat2(2) operates very similarly to openat(2). |
| * |
| * However, unlike openat(2), unknown or invalid bits in @flags result in |
| * -EINVAL rather than being silently ignored. @mode must be zero unless one of |
| * {O_CREAT, O_TMPFILE} are set. |
| * |
| * @flags: O_* flags. |
| * @mode: O_CREAT/O_TMPFILE file mode. |
| * @resolve: RESOLVE_* flags. |
| */ |
| struct open_how { |
| __u64 flags; |
| __u64 mode; |
| __u64 resolve; |
| }; |
| |
| /* how->resolve flags for openat2(2). */ |
| #define RESOLVE_NO_XDEV 0x01 /* Block mount-point crossings |
| (includes bind-mounts). */ |
| #define RESOLVE_NO_MAGICLINKS 0x02 /* Block traversal through procfs-style |
| "magic-links". */ |
| #define RESOLVE_NO_SYMLINKS 0x04 /* Block traversal through all symlinks |
| (implies OEXT_NO_MAGICLINKS) */ |
| #define RESOLVE_BENEATH 0x08 /* Block "lexical" trickery like |
| "..", symlinks, and absolute |
| paths which escape the dirfd. */ |
| #define RESOLVE_IN_ROOT 0x10 /* Make all jumps to "/" and ".." |
| be scoped inside the dirfd |
| (similar to chroot(2)). */ |
| |
| #endif /* _UAPI_LINUX_OPENAT2_H */ |