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tools/nolibc: move open() and friends to fcntl.h

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This is the location regular userspace expects these definitions.

Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Acked-by: Willy Tarreau <w@1wt.eu>
Link: https://lore.kernel.org/r/20250416-nolibc-split-sys-v1-3-a069a3f1d145@linutronix.de
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
This commit is contained in:
Thomas Weißschuh
2025-04-19 14:22:21 +02:00
committed by Thomas Weißschuh
parent 2b45ceb915
commit ecc091d93a
5 changed files with 72 additions and 52 deletions
Download Patch File Download Diff File Expand all files Collapse all files
tools/include/nolibc/Makefile
+1
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@@ -32,6 +32,7 @@ all_files := \
dirent.h \
elf.h \
errno.h \
fcntl.h \
limits.h \
nolibc.h \
signal.h \
tools/include/nolibc/dirent.h
+1
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@@ -10,6 +10,7 @@
#include "compiler.h"
#include "stdint.h"
#include "types.h"
#include "fcntl.h"
#include <linux/limits.h>
tools/include/nolibc/fcntl.h
+69
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@@ -0,0 +1,69 @@
/* SPDX-License-Identifier: LGPL-2.1 OR MIT */
/*
* fcntl definition for NOLIBC
* Copyright (C) 2017-2021 Willy Tarreau <w@1wt.eu>
*/
#ifndef _NOLIBC_FCNTL_H
#define _NOLIBC_FCNTL_H
#include "arch.h"
#include "types.h"
#include "sys.h"
/*
* int openat(int dirfd, const char *path, int flags[, mode_t mode]);
*/
static __attribute__((unused))
int sys_openat(int dirfd, const char *path, int flags, mode_t mode)
{
return my_syscall4(__NR_openat, dirfd, path, flags, mode);
}
static __attribute__((unused))
int openat(int dirfd, const char *path, int flags, ...)
{
mode_t mode = 0;
if (flags & O_CREAT) {
va_list args;
va_start(args, flags);
mode = va_arg(args, mode_t);
va_end(args);
}
return __sysret(sys_openat(dirfd, path, flags, mode));
}
/*
* int open(const char *path, int flags[, mode_t mode]);
*/
static __attribute__((unused))
int sys_open(const char *path, int flags, mode_t mode)
{
return my_syscall4(__NR_openat, AT_FDCWD, path, flags, mode);
}
static __attribute__((unused))
int open(const char *path, int flags, ...)
{
mode_t mode = 0;
if (flags & O_CREAT) {
va_list args;
va_start(args, flags);
mode = va_arg(args, mode_t);
va_end(args);
}
return __sysret(sys_open(path, flags, mode));
}
/* make sure to include all global symbols */
#include "nolibc.h"
#endif /* _NOLIBC_FCNTL_H */
tools/include/nolibc/nolibc.h
+1
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@@ -106,6 +106,7 @@
#include "time.h"
#include "stackprotector.h"
#include "dirent.h"
#include "fcntl.h"
/* Used by programs to avoid std includes */
#define NOLIBC
tools/include/nolibc/sys.h
-52
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@@ -764,58 +764,6 @@ int mount(const char *src, const char *tgt,
return __sysret(sys_mount(src, tgt, fst, flags, data));
}
/*
* int openat(int dirfd, const char *path, int flags[, mode_t mode]);
*/
static __attribute__((unused))
int sys_openat(int dirfd, const char *path, int flags, mode_t mode)
{
return my_syscall4(__NR_openat, dirfd, path, flags, mode);
}
static __attribute__((unused))
int openat(int dirfd, const char *path, int flags, ...)
{
mode_t mode = 0;
if (flags & O_CREAT) {
va_list args;
va_start(args, flags);
mode = va_arg(args, mode_t);
va_end(args);
}
return __sysret(sys_openat(dirfd, path, flags, mode));
}
/*
* int open(const char *path, int flags[, mode_t mode]);
*/
static __attribute__((unused))
int sys_open(const char *path, int flags, mode_t mode)
{
return my_syscall4(__NR_openat, AT_FDCWD, path, flags, mode);
}
static __attribute__((unused))
int open(const char *path, int flags, ...)
{
mode_t mode = 0;
if (flags & O_CREAT) {
va_list args;
va_start(args, flags);
mode = va_arg(args, mode_t);
va_end(args);
}
return __sysret(sys_open(path, flags, mode));
}
/*
* int pipe2(int pipefd[2], int flags);