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43 lines
1.4 KiB
43 lines
1.4 KiB
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ |
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#ifndef _UAPI_LINUX_OPENAT2_H |
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#define _UAPI_LINUX_OPENAT2_H |
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#include <linux/types.h> |
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/* |
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* Arguments for how openat2(2) should open the target path. If only @flags and |
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* @mode are non-zero, then openat2(2) operates very similarly to openat(2). |
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* |
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* However, unlike openat(2), unknown or invalid bits in @flags result in |
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* -EINVAL rather than being silently ignored. @mode must be zero unless one of |
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* {O_CREAT, O_TMPFILE} are set. |
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* |
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* @flags: O_* flags. |
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* @mode: O_CREAT/O_TMPFILE file mode. |
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* @resolve: RESOLVE_* flags. |
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*/ |
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struct open_how { |
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__u64 flags; |
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__u64 mode; |
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__u64 resolve; |
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}; |
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/* how->resolve flags for openat2(2). */ |
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#define RESOLVE_NO_XDEV 0x01 /* Block mount-point crossings |
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(includes bind-mounts). */ |
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#define RESOLVE_NO_MAGICLINKS 0x02 /* Block traversal through procfs-style |
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"magic-links". */ |
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#define RESOLVE_NO_SYMLINKS 0x04 /* Block traversal through all symlinks |
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(implies OEXT_NO_MAGICLINKS) */ |
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#define RESOLVE_BENEATH 0x08 /* Block "lexical" trickery like |
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"..", symlinks, and absolute |
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paths which escape the dirfd. */ |
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#define RESOLVE_IN_ROOT 0x10 /* Make all jumps to "/" and ".." |
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be scoped inside the dirfd |
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(similar to chroot(2)). */ |
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#define RESOLVE_CACHED 0x20 /* Only complete if resolution can be |
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completed through cached lookup. May |
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return -EAGAIN if that's not |
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possible. */ |
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#endif /* _UAPI_LINUX_OPENAT2_H */
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