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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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tools/nolibc/sys: split the syscall definitions into their own file
The syscall definitions were moved to sys.h. They were arranged in a more easily maintainable order, whereby the sys_xxx() and xxx() functions were grouped together, which also enlights the occasional mappings such as wait relying on wait4(). Signed-off-by: Willy Tarreau <w@1wt.eu> Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
This commit is contained in:
Willy Tarreau
Paul E. McKenney
parent
271661c1cd
commit
bd8c8fbb86
2 changed files with 1192 additions and 962 deletions
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@ -83,869 +83,18 @@
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#ifndef _NOLIBC_H
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#define _NOLIBC_H
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/* standard type definitions */
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#include "std.h"
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/* system includes */
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#include <asm/unistd.h>
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#include <asm/signal.h> // for SIGCHLD
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#include <asm/ioctls.h>
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#include <asm/errno.h>
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#include <linux/fs.h>
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#include <linux/loop.h>
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#include <linux/time.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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/* Used by programs to avoid std includes */
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#define NOLIBC
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/* this way it will be removed if unused */
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static int errno;
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#ifndef NOLIBC_IGNORE_ERRNO
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#define SET_ERRNO(v) do { errno = (v); } while (0)
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#else
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#define SET_ERRNO(v) do { } while (0)
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#endif
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/* errno codes all ensure that they will not conflict with a valid pointer
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* because they all correspond to the highest addressable memory page.
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*/
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#define MAX_ERRNO 4095
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/* Below are the C functions used to declare the raw syscalls. They try to be
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* architecture-agnostic, and return either a success or -errno. Declaring them
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* static will lead to them being inlined in most cases, but it's still possible
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* to reference them by a pointer if needed.
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*/
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static __attribute__((unused))
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void *sys_brk(void *addr)
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int tcsetpgrp(int fd, pid_t pid)
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{
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return (void *)my_syscall1(__NR_brk, addr);
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}
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static __attribute__((noreturn,unused))
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void sys_exit(int status)
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{
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my_syscall1(__NR_exit, status & 255);
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while(1); // shut the "noreturn" warnings.
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}
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static __attribute__((unused))
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int sys_chdir(const char *path)
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{
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return my_syscall1(__NR_chdir, path);
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}
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static __attribute__((unused))
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int sys_chmod(const char *path, mode_t mode)
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{
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#ifdef __NR_fchmodat
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return my_syscall4(__NR_fchmodat, AT_FDCWD, path, mode, 0);
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#elif defined(__NR_chmod)
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return my_syscall2(__NR_chmod, path, mode);
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#else
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#error Neither __NR_fchmodat nor __NR_chmod defined, cannot implement sys_chmod()
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#endif
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}
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static __attribute__((unused))
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int sys_chown(const char *path, uid_t owner, gid_t group)
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{
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#ifdef __NR_fchownat
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return my_syscall5(__NR_fchownat, AT_FDCWD, path, owner, group, 0);
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#elif defined(__NR_chown)
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return my_syscall3(__NR_chown, path, owner, group);
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#else
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#error Neither __NR_fchownat nor __NR_chown defined, cannot implement sys_chown()
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#endif
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}
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static __attribute__((unused))
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int sys_chroot(const char *path)
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{
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return my_syscall1(__NR_chroot, path);
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}
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static __attribute__((unused))
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int sys_close(int fd)
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{
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return my_syscall1(__NR_close, fd);
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}
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static __attribute__((unused))
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int sys_dup(int fd)
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{
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return my_syscall1(__NR_dup, fd);
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}
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#ifdef __NR_dup3
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static __attribute__((unused))
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int sys_dup3(int old, int new, int flags)
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{
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return my_syscall3(__NR_dup3, old, new, flags);
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}
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#endif
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static __attribute__((unused))
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int sys_dup2(int old, int new)
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{
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#ifdef __NR_dup3
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return my_syscall3(__NR_dup3, old, new, 0);
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#elif defined(__NR_dup2)
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return my_syscall2(__NR_dup2, old, new);
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#else
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#error Neither __NR_dup3 nor __NR_dup2 defined, cannot implement sys_dup2()
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#endif
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}
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static __attribute__((unused))
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int sys_execve(const char *filename, char *const argv[], char *const envp[])
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{
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return my_syscall3(__NR_execve, filename, argv, envp);
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}
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static __attribute__((unused))
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pid_t sys_fork(void)
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{
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#ifdef __NR_clone
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/* note: some archs only have clone() and not fork(). Different archs
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* have a different API, but most archs have the flags on first arg and
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* will not use the rest with no other flag.
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*/
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return my_syscall5(__NR_clone, SIGCHLD, 0, 0, 0, 0);
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#elif defined(__NR_fork)
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return my_syscall0(__NR_fork);
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#else
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#error Neither __NR_clone nor __NR_fork defined, cannot implement sys_fork()
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#endif
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}
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static __attribute__((unused))
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int sys_fsync(int fd)
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{
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return my_syscall1(__NR_fsync, fd);
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}
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static __attribute__((unused))
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int sys_getdents64(int fd, struct linux_dirent64 *dirp, int count)
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{
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return my_syscall3(__NR_getdents64, fd, dirp, count);
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}
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static __attribute__((unused))
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pid_t sys_getpgid(pid_t pid)
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{
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return my_syscall1(__NR_getpgid, pid);
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}
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static __attribute__((unused))
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pid_t sys_getpgrp(void)
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{
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return sys_getpgid(0);
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}
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static __attribute__((unused))
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pid_t sys_getpid(void)
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{
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return my_syscall0(__NR_getpid);
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}
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static __attribute__((unused))
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pid_t sys_gettid(void)
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{
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return my_syscall0(__NR_gettid);
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}
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static __attribute__((unused))
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int sys_gettimeofday(struct timeval *tv, struct timezone *tz)
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{
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return my_syscall2(__NR_gettimeofday, tv, tz);
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}
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static __attribute__((unused))
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int sys_ioctl(int fd, unsigned long req, void *value)
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{
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return my_syscall3(__NR_ioctl, fd, req, value);
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}
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static __attribute__((unused))
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int sys_kill(pid_t pid, int signal)
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{
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return my_syscall2(__NR_kill, pid, signal);
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}
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static __attribute__((unused))
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int sys_link(const char *old, const char *new)
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{
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#ifdef __NR_linkat
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return my_syscall5(__NR_linkat, AT_FDCWD, old, AT_FDCWD, new, 0);
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#elif defined(__NR_link)
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return my_syscall2(__NR_link, old, new);
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#else
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#error Neither __NR_linkat nor __NR_link defined, cannot implement sys_link()
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#endif
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}
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static __attribute__((unused))
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off_t sys_lseek(int fd, off_t offset, int whence)
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{
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return my_syscall3(__NR_lseek, fd, offset, whence);
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}
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static __attribute__((unused))
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int sys_mkdir(const char *path, mode_t mode)
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{
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#ifdef __NR_mkdirat
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return my_syscall3(__NR_mkdirat, AT_FDCWD, path, mode);
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#elif defined(__NR_mkdir)
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return my_syscall2(__NR_mkdir, path, mode);
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#else
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#error Neither __NR_mkdirat nor __NR_mkdir defined, cannot implement sys_mkdir()
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#endif
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}
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static __attribute__((unused))
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long sys_mknod(const char *path, mode_t mode, dev_t dev)
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{
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#ifdef __NR_mknodat
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return my_syscall4(__NR_mknodat, AT_FDCWD, path, mode, dev);
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#elif defined(__NR_mknod)
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return my_syscall3(__NR_mknod, path, mode, dev);
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#else
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#error Neither __NR_mknodat nor __NR_mknod defined, cannot implement sys_mknod()
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#endif
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}
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static __attribute__((unused))
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int sys_mount(const char *src, const char *tgt, const char *fst,
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unsigned long flags, const void *data)
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{
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return my_syscall5(__NR_mount, src, tgt, fst, flags, data);
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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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#ifdef __NR_openat
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return my_syscall4(__NR_openat, AT_FDCWD, path, flags, mode);
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#elif defined(__NR_open)
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return my_syscall3(__NR_open, path, flags, mode);
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#else
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#error Neither __NR_openat nor __NR_open defined, cannot implement sys_open()
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#endif
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}
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static __attribute__((unused))
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int sys_pivot_root(const char *new, const char *old)
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{
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return my_syscall2(__NR_pivot_root, new, old);
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}
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static __attribute__((unused))
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int sys_poll(struct pollfd *fds, int nfds, int timeout)
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{
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#if defined(__NR_ppoll)
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struct timespec t;
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if (timeout >= 0) {
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t.tv_sec = timeout / 1000;
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t.tv_nsec = (timeout % 1000) * 1000000;
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}
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return my_syscall4(__NR_ppoll, fds, nfds, (timeout >= 0) ? &t : NULL, NULL);
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#elif defined(__NR_poll)
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return my_syscall3(__NR_poll, fds, nfds, timeout);
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#else
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#error Neither __NR_ppoll nor __NR_poll defined, cannot implement sys_poll()
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#endif
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}
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static __attribute__((unused))
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ssize_t sys_read(int fd, void *buf, size_t count)
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{
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return my_syscall3(__NR_read, fd, buf, count);
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}
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static __attribute__((unused))
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ssize_t sys_reboot(int magic1, int magic2, int cmd, void *arg)
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{
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return my_syscall4(__NR_reboot, magic1, magic2, cmd, arg);
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}
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static __attribute__((unused))
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int sys_sched_yield(void)
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{
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return my_syscall0(__NR_sched_yield);
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}
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static __attribute__((unused))
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int sys_select(int nfds, fd_set *rfds, fd_set *wfds, fd_set *efds, struct timeval *timeout)
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{
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#if defined(__ARCH_WANT_SYS_OLD_SELECT) && !defined(__NR__newselect)
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struct sel_arg_struct {
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unsigned long n;
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fd_set *r, *w, *e;
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struct timeval *t;
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} arg = { .n = nfds, .r = rfds, .w = wfds, .e = efds, .t = timeout };
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return my_syscall1(__NR_select, &arg);
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#elif defined(__ARCH_WANT_SYS_PSELECT6) && defined(__NR_pselect6)
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struct timespec t;
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if (timeout) {
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t.tv_sec = timeout->tv_sec;
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t.tv_nsec = timeout->tv_usec * 1000;
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}
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return my_syscall6(__NR_pselect6, nfds, rfds, wfds, efds, timeout ? &t : NULL, NULL);
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#elif defined(__NR__newselect) || defined(__NR_select)
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#ifndef __NR__newselect
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#define __NR__newselect __NR_select
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#endif
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return my_syscall5(__NR__newselect, nfds, rfds, wfds, efds, timeout);
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#else
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#error None of __NR_select, __NR_pselect6, nor __NR__newselect defined, cannot implement sys_select()
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#endif
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}
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static __attribute__((unused))
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int sys_setpgid(pid_t pid, pid_t pgid)
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{
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return my_syscall2(__NR_setpgid, pid, pgid);
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}
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static __attribute__((unused))
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pid_t sys_setsid(void)
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{
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return my_syscall0(__NR_setsid);
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}
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static __attribute__((unused))
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int sys_stat(const char *path, struct stat *buf)
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{
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struct sys_stat_struct stat;
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long ret;
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#ifdef __NR_newfstatat
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/* only solution for arm64 */
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ret = my_syscall4(__NR_newfstatat, AT_FDCWD, path, &stat, 0);
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#elif defined(__NR_stat)
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ret = my_syscall2(__NR_stat, path, &stat);
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#else
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#error Neither __NR_newfstatat nor __NR_stat defined, cannot implement sys_stat()
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#endif
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buf->st_dev = stat.st_dev;
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buf->st_ino = stat.st_ino;
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buf->st_mode = stat.st_mode;
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buf->st_nlink = stat.st_nlink;
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buf->st_uid = stat.st_uid;
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buf->st_gid = stat.st_gid;
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buf->st_rdev = stat.st_rdev;
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buf->st_size = stat.st_size;
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buf->st_blksize = stat.st_blksize;
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buf->st_blocks = stat.st_blocks;
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buf->st_atime = stat.st_atime;
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buf->st_mtime = stat.st_mtime;
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buf->st_ctime = stat.st_ctime;
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return ret;
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}
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static __attribute__((unused))
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int sys_symlink(const char *old, const char *new)
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{
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#ifdef __NR_symlinkat
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return my_syscall3(__NR_symlinkat, old, AT_FDCWD, new);
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#elif defined(__NR_symlink)
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return my_syscall2(__NR_symlink, old, new);
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#else
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#error Neither __NR_symlinkat nor __NR_symlink defined, cannot implement sys_symlink()
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#endif
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}
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static __attribute__((unused))
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mode_t sys_umask(mode_t mode)
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{
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return my_syscall1(__NR_umask, mode);
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}
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static __attribute__((unused))
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int sys_umount2(const char *path, int flags)
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{
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return my_syscall2(__NR_umount2, path, flags);
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}
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static __attribute__((unused))
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int sys_unlink(const char *path)
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{
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#ifdef __NR_unlinkat
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return my_syscall3(__NR_unlinkat, AT_FDCWD, path, 0);
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#elif defined(__NR_unlink)
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return my_syscall1(__NR_unlink, path);
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#else
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#error Neither __NR_unlinkat nor __NR_unlink defined, cannot implement sys_unlink()
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#endif
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}
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static __attribute__((unused))
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pid_t sys_wait4(pid_t pid, int *status, int options, struct rusage *rusage)
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{
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return my_syscall4(__NR_wait4, pid, status, options, rusage);
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}
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static __attribute__((unused))
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pid_t sys_waitpid(pid_t pid, int *status, int options)
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{
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return sys_wait4(pid, status, options, 0);
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}
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static __attribute__((unused))
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pid_t sys_wait(int *status)
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{
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return sys_waitpid(-1, status, 0);
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}
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static __attribute__((unused))
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ssize_t sys_write(int fd, const void *buf, size_t count)
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{
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return my_syscall3(__NR_write, fd, buf, count);
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}
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/* Below are the libc-compatible syscalls which return x or -1 and set errno.
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* They rely on the functions above. Similarly they're marked static so that it
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* is possible to assign pointers to them if needed.
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*/
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static __attribute__((unused))
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int brk(void *addr)
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{
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void *ret = sys_brk(addr);
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if (!ret) {
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SET_ERRNO(ENOMEM);
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return -1;
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}
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return 0;
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}
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static __attribute__((noreturn,unused))
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void exit(int status)
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{
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sys_exit(status);
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}
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static __attribute__((unused))
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int chdir(const char *path)
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{
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int ret = sys_chdir(path);
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if (ret < 0) {
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SET_ERRNO(-ret);
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ret = -1;
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}
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return ret;
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}
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static __attribute__((unused))
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int chmod(const char *path, mode_t mode)
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{
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int ret = sys_chmod(path, mode);
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if (ret < 0) {
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SET_ERRNO(-ret);
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ret = -1;
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}
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||||
return ret;
|
||||
}
|
||||
|
||||
static __attribute__((unused))
|
||||
int chown(const char *path, uid_t owner, gid_t group)
|
||||
{
|
||||
int ret = sys_chown(path, owner, group);
|
||||
|
||||
if (ret < 0) {
|
||||
SET_ERRNO(-ret);
|
||||
ret = -1;
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
static __attribute__((unused))
|
||||
int chroot(const char *path)
|
||||
{
|
||||
int ret = sys_chroot(path);
|
||||
|
||||
if (ret < 0) {
|
||||
SET_ERRNO(-ret);
|
||||
ret = -1;
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
static __attribute__((unused))
|
||||
int close(int fd)
|
||||
{
|
||||
int ret = sys_close(fd);
|
||||
|
||||
if (ret < 0) {
|
||||
SET_ERRNO(-ret);
|
||||
ret = -1;
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
static __attribute__((unused))
|
||||
int dup(int fd)
|
||||
{
|
||||
int ret = sys_dup(fd);
|
||||
|
||||
if (ret < 0) {
|
||||
SET_ERRNO(-ret);
|
||||
ret = -1;
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
static __attribute__((unused))
|
||||
int dup2(int old, int new)
|
||||
{
|
||||
int ret = sys_dup2(old, new);
|
||||
|
||||
if (ret < 0) {
|
||||
SET_ERRNO(-ret);
|
||||
ret = -1;
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
#ifdef __NR_dup3
|
||||
static __attribute__((unused))
|
||||
int dup3(int old, int new, int flags)
|
||||
{
|
||||
int ret = sys_dup3(old, new, flags);
|
||||
|
||||
if (ret < 0) {
|
||||
SET_ERRNO(-ret);
|
||||
ret = -1;
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
#endif
|
||||
|
||||
static __attribute__((unused))
|
||||
int execve(const char *filename, char *const argv[], char *const envp[])
|
||||
{
|
||||
int ret = sys_execve(filename, argv, envp);
|
||||
|
||||
if (ret < 0) {
|
||||
SET_ERRNO(-ret);
|
||||
ret = -1;
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
static __attribute__((unused))
|
||||
pid_t fork(void)
|
||||
{
|
||||
pid_t ret = sys_fork();
|
||||
|
||||
if (ret < 0) {
|
||||
SET_ERRNO(-ret);
|
||||
ret = -1;
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
static __attribute__((unused))
|
||||
int fsync(int fd)
|
||||
{
|
||||
int ret = sys_fsync(fd);
|
||||
|
||||
if (ret < 0) {
|
||||
SET_ERRNO(-ret);
|
||||
ret = -1;
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
static __attribute__((unused))
|
||||
int getdents64(int fd, struct linux_dirent64 *dirp, int count)
|
||||
{
|
||||
int ret = sys_getdents64(fd, dirp, count);
|
||||
|
||||
if (ret < 0) {
|
||||
SET_ERRNO(-ret);
|
||||
ret = -1;
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
static __attribute__((unused))
|
||||
pid_t getpgid(pid_t pid)
|
||||
{
|
||||
pid_t ret = sys_getpgid(pid);
|
||||
|
||||
if (ret < 0) {
|
||||
SET_ERRNO(-ret);
|
||||
ret = -1;
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
static __attribute__((unused))
|
||||
pid_t getpgrp(void)
|
||||
{
|
||||
pid_t ret = sys_getpgrp();
|
||||
|
||||
if (ret < 0) {
|
||||
SET_ERRNO(-ret);
|
||||
ret = -1;
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
static __attribute__((unused))
|
||||
pid_t getpid(void)
|
||||
{
|
||||
pid_t ret = sys_getpid();
|
||||
|
||||
if (ret < 0) {
|
||||
SET_ERRNO(-ret);
|
||||
ret = -1;
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
static __attribute__((unused))
|
||||
pid_t gettid(void)
|
||||
{
|
||||
pid_t ret = sys_gettid();
|
||||
|
||||
if (ret < 0) {
|
||||
SET_ERRNO(-ret);
|
||||
ret = -1;
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
static __attribute__((unused))
|
||||
int gettimeofday(struct timeval *tv, struct timezone *tz)
|
||||
{
|
||||
int ret = sys_gettimeofday(tv, tz);
|
||||
|
||||
if (ret < 0) {
|
||||
SET_ERRNO(-ret);
|
||||
ret = -1;
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
static __attribute__((unused))
|
||||
int ioctl(int fd, unsigned long req, void *value)
|
||||
{
|
||||
int ret = sys_ioctl(fd, req, value);
|
||||
|
||||
if (ret < 0) {
|
||||
SET_ERRNO(-ret);
|
||||
ret = -1;
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
static __attribute__((unused))
|
||||
int kill(pid_t pid, int signal)
|
||||
{
|
||||
int ret = sys_kill(pid, signal);
|
||||
|
||||
if (ret < 0) {
|
||||
SET_ERRNO(-ret);
|
||||
ret = -1;
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
static __attribute__((unused))
|
||||
int link(const char *old, const char *new)
|
||||
{
|
||||
int ret = sys_link(old, new);
|
||||
|
||||
if (ret < 0) {
|
||||
SET_ERRNO(-ret);
|
||||
ret = -1;
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
static __attribute__((unused))
|
||||
off_t lseek(int fd, off_t offset, int whence)
|
||||
{
|
||||
off_t ret = sys_lseek(fd, offset, whence);
|
||||
|
||||
if (ret < 0) {
|
||||
SET_ERRNO(-ret);
|
||||
ret = -1;
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
static __attribute__((unused))
|
||||
int mkdir(const char *path, mode_t mode)
|
||||
{
|
||||
int ret = sys_mkdir(path, mode);
|
||||
|
||||
if (ret < 0) {
|
||||
SET_ERRNO(-ret);
|
||||
ret = -1;
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
static __attribute__((unused))
|
||||
int mknod(const char *path, mode_t mode, dev_t dev)
|
||||
{
|
||||
int ret = sys_mknod(path, mode, dev);
|
||||
|
||||
if (ret < 0) {
|
||||
SET_ERRNO(-ret);
|
||||
ret = -1;
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
static __attribute__((unused))
|
||||
int mount(const char *src, const char *tgt,
|
||||
const char *fst, unsigned long flags,
|
||||
const void *data)
|
||||
{
|
||||
int ret = sys_mount(src, tgt, fst, flags, data);
|
||||
|
||||
if (ret < 0) {
|
||||
SET_ERRNO(-ret);
|
||||
ret = -1;
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
static __attribute__((unused))
|
||||
int open(const char *path, int flags, mode_t mode)
|
||||
{
|
||||
int ret = sys_open(path, flags, mode);
|
||||
|
||||
if (ret < 0) {
|
||||
SET_ERRNO(-ret);
|
||||
ret = -1;
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
static __attribute__((unused))
|
||||
int pivot_root(const char *new, const char *old)
|
||||
{
|
||||
int ret = sys_pivot_root(new, old);
|
||||
|
||||
if (ret < 0) {
|
||||
SET_ERRNO(-ret);
|
||||
ret = -1;
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
static __attribute__((unused))
|
||||
int poll(struct pollfd *fds, int nfds, int timeout)
|
||||
{
|
||||
int ret = sys_poll(fds, nfds, timeout);
|
||||
|
||||
if (ret < 0) {
|
||||
SET_ERRNO(-ret);
|
||||
ret = -1;
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
static __attribute__((unused))
|
||||
ssize_t read(int fd, void *buf, size_t count)
|
||||
{
|
||||
ssize_t ret = sys_read(fd, buf, count);
|
||||
|
||||
if (ret < 0) {
|
||||
SET_ERRNO(-ret);
|
||||
ret = -1;
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
static __attribute__((unused))
|
||||
int reboot(int cmd)
|
||||
{
|
||||
int ret = sys_reboot(LINUX_REBOOT_MAGIC1, LINUX_REBOOT_MAGIC2, cmd, 0);
|
||||
|
||||
if (ret < 0) {
|
||||
SET_ERRNO(-ret);
|
||||
ret = -1;
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
static __attribute__((unused))
|
||||
void *sbrk(intptr_t inc)
|
||||
{
|
||||
void *ret;
|
||||
|
||||
/* first call to find current end */
|
||||
if ((ret = sys_brk(0)) && (sys_brk(ret + inc) == ret + inc))
|
||||
return ret + inc;
|
||||
|
||||
SET_ERRNO(ENOMEM);
|
||||
return (void *)-1;
|
||||
}
|
||||
|
||||
static __attribute__((unused))
|
||||
int sched_yield(void)
|
||||
{
|
||||
int ret = sys_sched_yield();
|
||||
|
||||
if (ret < 0) {
|
||||
SET_ERRNO(-ret);
|
||||
ret = -1;
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
static __attribute__((unused))
|
||||
int select(int nfds, fd_set *rfds, fd_set *wfds, fd_set *efds, struct timeval *timeout)
|
||||
{
|
||||
int ret = sys_select(nfds, rfds, wfds, efds, timeout);
|
||||
|
||||
if (ret < 0) {
|
||||
SET_ERRNO(-ret);
|
||||
ret = -1;
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
static __attribute__((unused))
|
||||
int setpgid(pid_t pid, pid_t pgid)
|
||||
{
|
||||
int ret = sys_setpgid(pid, pgid);
|
||||
|
||||
if (ret < 0) {
|
||||
SET_ERRNO(-ret);
|
||||
ret = -1;
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
static __attribute__((unused))
|
||||
pid_t setsid(void)
|
||||
{
|
||||
pid_t ret = sys_setsid();
|
||||
|
||||
if (ret < 0) {
|
||||
SET_ERRNO(-ret);
|
||||
ret = -1;
|
||||
}
|
||||
return ret;
|
||||
return ioctl(fd, TIOCSPGRP, &pid);
|
||||
}
|
||||
|
||||
static __attribute__((unused))
|
||||
|
|
@ -972,114 +121,6 @@ int msleep(unsigned int msecs)
|
|||
return 0;
|
||||
}
|
||||
|
||||
static __attribute__((unused))
|
||||
int stat(const char *path, struct stat *buf)
|
||||
{
|
||||
int ret = sys_stat(path, buf);
|
||||
|
||||
if (ret < 0) {
|
||||
SET_ERRNO(-ret);
|
||||
ret = -1;
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
static __attribute__((unused))
|
||||
int symlink(const char *old, const char *new)
|
||||
{
|
||||
int ret = sys_symlink(old, new);
|
||||
|
||||
if (ret < 0) {
|
||||
SET_ERRNO(-ret);
|
||||
ret = -1;
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
static __attribute__((unused))
|
||||
int tcsetpgrp(int fd, pid_t pid)
|
||||
{
|
||||
return ioctl(fd, TIOCSPGRP, &pid);
|
||||
}
|
||||
|
||||
static __attribute__((unused))
|
||||
mode_t umask(mode_t mode)
|
||||
{
|
||||
return sys_umask(mode);
|
||||
}
|
||||
|
||||
static __attribute__((unused))
|
||||
int umount2(const char *path, int flags)
|
||||
{
|
||||
int ret = sys_umount2(path, flags);
|
||||
|
||||
if (ret < 0) {
|
||||
SET_ERRNO(-ret);
|
||||
ret = -1;
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
static __attribute__((unused))
|
||||
int unlink(const char *path)
|
||||
{
|
||||
int ret = sys_unlink(path);
|
||||
|
||||
if (ret < 0) {
|
||||
SET_ERRNO(-ret);
|
||||
ret = -1;
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
static __attribute__((unused))
|
||||
pid_t wait4(pid_t pid, int *status, int options, struct rusage *rusage)
|
||||
{
|
||||
pid_t ret = sys_wait4(pid, status, options, rusage);
|
||||
|
||||
if (ret < 0) {
|
||||
SET_ERRNO(-ret);
|
||||
ret = -1;
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
static __attribute__((unused))
|
||||
pid_t waitpid(pid_t pid, int *status, int options)
|
||||
{
|
||||
pid_t ret = sys_waitpid(pid, status, options);
|
||||
|
||||
if (ret < 0) {
|
||||
SET_ERRNO(-ret);
|
||||
ret = -1;
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
static __attribute__((unused))
|
||||
pid_t wait(int *status)
|
||||
{
|
||||
pid_t ret = sys_wait(status);
|
||||
|
||||
if (ret < 0) {
|
||||
SET_ERRNO(-ret);
|
||||
ret = -1;
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
static __attribute__((unused))
|
||||
ssize_t write(int fd, const void *buf, size_t count)
|
||||
{
|
||||
ssize_t ret = sys_write(fd, buf, count);
|
||||
|
||||
if (ret < 0) {
|
||||
SET_ERRNO(-ret);
|
||||
ret = -1;
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
/* some size-optimized reimplementations of a few common str* and mem*
|
||||
* functions. They're marked static, except memcpy() and raise() which are used
|
||||
* by libgcc on ARM, so they are marked weak instead in order not to cause an
|
||||
|
|
|
|||
1189
tools/include/nolibc/sys.h
Normal file
1189
tools/include/nolibc/sys.h
Normal file
File diff suppressed because it is too large
Load diff
Loading…
Reference in a new issue