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6285f0881e
The sys_foo() naming scheme used by the syscall wrappers may collide with application symbols. Especially as 'sys_' is an obvious naming scheme an application may choose for its own custom systemcall wrappers. Avoid these conflicts by using an leading underscore which moves the names into the implementation's namespace. This naming scheme was chosen over a '__nolibc_' prefix, as these functions are not an implementation detail but a documented interface meant to be used by applications. While this may break some existing users, adapting them should be straightforward. Given that nolibc is most-likely vendored, no unexpected breakage should happen. No in-tree users are affected. These conflicts happen when compiling some of the kernel selftests with nolibc. Signed-off-by: Thomas Weißschuh <linux@weissschuh.net> Acked-by: Willy Tarreau <w@1wt.eu> Link: https://patch.msgid.link/20260319-nolibc-namespacing-v1-1-33c22eaddb5e@weissschuh.net
70 lines
1.3 KiB
C
70 lines
1.3 KiB
C
/* SPDX-License-Identifier: LGPL-2.1 OR MIT */
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/*
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* fcntl definition for NOLIBC
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* Copyright (C) 2017-2021 Willy Tarreau <w@1wt.eu>
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*/
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/* make sure to include all global symbols */
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#include "nolibc.h"
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#ifndef _NOLIBC_FCNTL_H
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#define _NOLIBC_FCNTL_H
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#include "arch.h"
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#include "types.h"
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#include "sys.h"
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/*
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* int openat(int dirfd, const char *path, int flags[, mode_t mode]);
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*/
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static __attribute__((unused))
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int _sys_openat(int dirfd, const char *path, int flags, mode_t mode)
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{
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return __nolibc_syscall4(__NR_openat, dirfd, path, flags, mode);
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}
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static __attribute__((unused))
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int openat(int dirfd, const char *path, int flags, ...)
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{
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mode_t mode = 0;
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if (flags & O_CREAT) {
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va_list args;
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va_start(args, flags);
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mode = va_arg(args, mode_t);
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va_end(args);
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}
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return __sysret(_sys_openat(dirfd, path, flags, mode));
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}
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/*
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* int open(const char *path, int flags[, mode_t mode]);
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*/
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static __attribute__((unused))
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int _sys_open(const char *path, int flags, mode_t mode)
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{
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return __nolibc_syscall4(__NR_openat, AT_FDCWD, path, flags, mode);
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}
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static __attribute__((unused))
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int open(const char *path, int flags, ...)
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{
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mode_t mode = 0;
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if (flags & O_CREAT) {
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va_list args;
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va_start(args, flags);
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mode = va_arg(args, mode_t);
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va_end(args);
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}
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return __sysret(_sys_open(path, flags, mode));
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}
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#endif /* _NOLIBC_FCNTL_H */
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