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(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051/* 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->flags bits exclusive to openat2(2). These live in the upper 32 bits * of @flags so that they cannot be expressed by open(2) / openat(2), whose * @flags argument is a C int. */#define OPENAT2_REGULAR ((__u64)1 << 32) /* Only open regular files. */
/* 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)). */#define RESOLVE_CACHED 0x20 /* Only complete if resolution can be completed through cached lookup. May return -EAGAIN if that's not possible. */
#endif /* _UAPI_LINUX_OPENAT2_H */