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/* Wrapper arpund system calls to provide cancelation points.
Copyright (C) 1996,1997,1998,1999,2000,2001 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <fcntl.h>
#include <sys/mman.h>
#include <pthread.h>
#include <unistd.h>
#include <stdarg.h>
#include <stddef.h>
#include <stdlib.h>
#include <termios.h>
#include <sys/resource.h>
#include <sys/wait.h>
#include <sys/socket.h>
#include "libc-symbols.h"
#ifndef SHARED
/* We need a hook to force this file to be linked in when static
libpthread is used. */
const int __pthread_provide_wrappers = 0;
#endif
#if !defined(_ELIX_LEVEL) || _ELIX_LEVEL >= 2
#define ELIX_2_PLUS
#endif
#if !defined(_ELIX_LEVEL) || _ELIX_LEVEL >= 3
#define ELIX_3_PLUS
#endif
#define CANCELABLE_SYSCALL(res_type, name, param_list, params) \
res_type __libc_##name param_list; \
res_type \
__attribute__ ((weak)) \
name param_list \
{ \
res_type result; \
int oldtype; \
pthread_setcanceltype (PTHREAD_CANCEL_ASYNCHRONOUS, &oldtype); \
result = __libc_##name params; \
pthread_setcanceltype (oldtype, NULL); \
return result; \
}
#define CANCELABLE_SYSCALL_VA(res_type, name, param_list, params, last_arg) \
res_type __libc_##name param_list; \
res_type \
__attribute__ ((weak)) \
name param_list \
{ \
res_type result; \
int oldtype; \
va_list ap; \
pthread_setcanceltype (PTHREAD_CANCEL_ASYNCHRONOUS, &oldtype); \
va_start (ap, last_arg); \
result = __libc_##name params; \
va_end (ap); \
pthread_setcanceltype (oldtype, NULL); \
return result; \
}
/* close(2). */
CANCELABLE_SYSCALL (int, close, (int fd), (fd))
strong_alias (close, __close)
/* fcntl(2). */
CANCELABLE_SYSCALL_VA (int, fcntl, (int fd, int cmd, ...),
(fd, cmd, va_arg (ap, long int)), cmd)
strong_alias (fcntl, __fcntl)
/* fsync(2). */
CANCELABLE_SYSCALL (int, fsync, (int fd), (fd))
/* lseek(2). */
CANCELABLE_SYSCALL (off_t, lseek, (int fd, off_t offset, int whence),
(fd, offset, whence))
strong_alias (lseek, __lseek)
#ifdef ELIX_2_PLUS
/* lseek64(2). */
CANCELABLE_SYSCALL (loff_t, lseek64, (int fd, loff_t offset, int whence),
(fd, offset, whence))
#endif
/* msync(2). */
CANCELABLE_SYSCALL (int, msync, (__ptr_t addr, size_t length, int flags),
(addr, length, flags))
/* nanosleep(2). */
CANCELABLE_SYSCALL (int, nanosleep, (const struct timespec *requested_time,
struct timespec *remaining),
(requested_time, remaining))
/* open(2). */
CANCELABLE_SYSCALL_VA (int, open, (const char *pathname, int flags, ...),
(pathname, flags, va_arg (ap, int)), flags)
strong_alias (open, __open)
#ifdef ELIX_2_PLUS
/* open64(3). */
CANCELABLE_SYSCALL_VA (int, open64, (const char *pathname, int flags, ...),
(pathname, flags, va_arg (ap, int)), flags)
strong_alias (open64, __open64)
#endif
/* pause(2). */
CANCELABLE_SYSCALL (int, pause, (void), ())
/* pread(3). */
CANCELABLE_SYSCALL (ssize_t, pread, (int fd, void *buf, size_t count,
off_t offset),
(fd, buf, count, offset))
#ifdef ELIX_2_PLUS
/* pread64(3). */
CANCELABLE_SYSCALL (ssize_t, pread64, (int fd, void *buf, size_t count,
loff_t offset),
(fd, buf, count, offset))
strong_alias (pread64, __pread64)
#endif
/* pwrite(3). */
CANCELABLE_SYSCALL (ssize_t, pwrite, (int fd, const void *buf, size_t n,
off_t offset),
(fd, buf, n, offset))
#ifdef ELIX_2_PLUS
/* pwrite64(3). */
CANCELABLE_SYSCALL (ssize_t, pwrite64, (int fd, const void *buf, size_t n,
loff_t offset),
(fd, buf, n, offset))
strong_alias (pwrite64, __pwrite64)
#endif
/* read(2). */
CANCELABLE_SYSCALL (ssize_t, read, (int fd, void *buf, size_t count),
(fd, buf, count))
strong_alias (read, __read)
#ifdef ELIX_3_PLUS
/* system(3). */
CANCELABLE_SYSCALL (int, system, (const char *line), (line))
#endif
/* tcdrain(2). */
CANCELABLE_SYSCALL (int, tcdrain, (int fd), (fd))
#ifdef ELIX_3_PLUS
/* wait(2). */
CANCELABLE_SYSCALL (__pid_t, wait, (int *stat_loc), (stat_loc))
strong_alias (wait, __wait)
#endif
#ifdef ELIX_3_PLUS
/* waitpid(2). */
CANCELABLE_SYSCALL (__pid_t, waitpid, (__pid_t pid, int *stat_loc,
int options),
(pid, stat_loc, options))
#endif
/* for libpthread usage */
CANCELABLE_SYSCALL (__pid_t, __waitpid, (__pid_t pid, int *stat_loc,
int options),
(pid, stat_loc, options))
/* write(2). */
CANCELABLE_SYSCALL (ssize_t, write, (int fd, const void *buf, size_t n),
(fd, buf, n))
strong_alias (write, __write)
/* The following system calls are thread cancellation points specified
in XNS. */
/* accept(2). */
CANCELABLE_SYSCALL (int, accept, (int fd, __SOCKADDR_ARG addr,
socklen_t *addr_len),
(fd, addr, addr_len))
/* connect(2). */
CANCELABLE_SYSCALL (int, connect, (int fd, __CONST_SOCKADDR_ARG addr,
socklen_t len),
(fd, addr, len))
strong_alias (connect, __connect)
/* recv(2). */
CANCELABLE_SYSCALL (ssize_t, recv, (int fd, __ptr_t buf, size_t n, int flags),
(fd, buf, n, flags))
/* recvfrom(2). */
CANCELABLE_SYSCALL (ssize_t, recvfrom, (int fd, __ptr_t buf, size_t n, int flags,
__SOCKADDR_ARG addr, socklen_t *addr_len),
(fd, buf, n, flags, addr, addr_len))
/* recvmsg(2). */
CANCELABLE_SYSCALL (ssize_t, recvmsg, (int fd, struct msghdr *message, int flags),
(fd, message, flags))
/* send(2). */
CANCELABLE_SYSCALL (ssize_t, send, (int fd, const __ptr_t buf, size_t n,
int flags),
(fd, buf, n, flags))
strong_alias (send, __send)
/* sendmsg(2). */
CANCELABLE_SYSCALL (ssize_t, sendmsg, (int fd, const struct msghdr *message,
int flags),
(fd, message, flags))
/* sendto(2). */
CANCELABLE_SYSCALL (ssize_t, sendto, (int fd, const __ptr_t buf, size_t n,
int flags, __CONST_SOCKADDR_ARG addr,
socklen_t addr_len),
(fd, buf, n, flags, addr, addr_len))
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