diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/bits')
| -rw-r--r-- | sysdeps/unix/sysv/linux/bits/fcntl-linux.h | 22 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/bits/openat2.h | 61 |
2 files changed, 83 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/bits/fcntl-linux.h b/sysdeps/unix/sysv/linux/bits/fcntl-linux.h index 628612b885..279aa2b8eb 100644 --- a/sysdeps/unix/sysv/linux/bits/fcntl-linux.h +++ b/sysdeps/unix/sysv/linux/bits/fcntl-linux.h @@ -451,6 +451,28 @@ extern int name_to_handle_at (int __dfd, const char *__name, extern int open_by_handle_at (int __mountdirfd, struct file_handle *__handle, int __flags); +#ifdef __has_include +# if __has_include ("linux/openat2.h") +# include "linux/openat2.h" +# define __glibc_has_open_how 1 +# endif +#endif + +#include <bits/openat2.h> + +/* Similar to `openat' but the arguments are packed on HOW with the size + USIZE. If flags and mode from HOW are non-zero, then openat2 operates + like openat. + + Unlike openat2, unknown or invalid flags result in an error (EINVAL), + rather than being ignored. The mode must be zero unless one O_CREAT + or O_TMPFILE are set. + + The kernel does not support legacy non-LFS interface. */ +extern int openat2 (int __dfd, const char *__filename, struct open_how *__how, + size_t __usize) + __nonnull ((2, 3)); + #endif /* use GNU */ __END_DECLS diff --git a/sysdeps/unix/sysv/linux/bits/openat2.h b/sysdeps/unix/sysv/linux/bits/openat2.h new file mode 100644 index 0000000000..a07984dace --- /dev/null +++ b/sysdeps/unix/sysv/linux/bits/openat2.h @@ -0,0 +1,61 @@ +/* openat2 definition. Linux specific. + Copyright (C) 2024 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <https://www.gnu.org/licenses/>. */ + +#ifndef _FCNTL_H +# error "Never use <bits/openat2.h> directly; include <fcntl.h> instead." +#endif + +#ifndef __glibc_has_open_how +/* Arguments for how openat2 should open the target path. */ +struct open_how +{ + __uint64_t flags; + __uint64_t mode; + __uint64_t resolve; +}; +#endif + +/* how->resolve flags for openat2. */ +#ifndef RESOLVE_NO_XDEV +# define RESOLVE_NO_XDEV 0x01 /* Block mount-point crossings + (includes bind-mounts). */ +#endif +#ifndef RESOLVE_NO_MAGICLINKS +# define RESOLVE_NO_MAGICLINKS 0x02 /* Block traversal through procfs-style + "magic-links". */ +#endif +#ifndef RESOLVE_NO_SYMLINKS +# define RESOLVE_NO_SYMLINKS 0x04 /* Block traversal through all symlinks + (implies OEXT_NO_MAGICLINKS). */ +#endif +#ifndef RESOLVE_BENEATH +# define RESOLVE_BENEATH 0x08 /* Block "lexical" trickery like + "..", symlinks, and absolute + paths which escape the dirfd. */ +#endif +#ifndef RESOLVE_IN_ROOT +# define RESOLVE_IN_ROOT 0x10 /* Make all jumps to "/" and ".." + be scoped inside the dirfd + (similar to chroot). */ +#endif +#ifndef RESOLVE_CACHED +# define RESOLVE_CACHED 0x20 /* Only complete if resolution can be + completed through cached lookup. May + return -EAGAIN if that's not + possible. */ +#endif |