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pthread_cancelstub.c revision 1.1.2.2 
      1 /*	$NetBSD: pthread_cancelstub.c,v 1.1.2.2 2002/05/20 19:18:44 nathanw Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2002 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Nathan J. Williams.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  * 3. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *        This product includes software developed by the NetBSD
     21  *        Foundation, Inc. and its contributors.
     22  * 4. Neither the name of The NetBSD Foundation nor the names of its
     23  *    contributors may be used to endorse or promote products derived
     24  *    from this software without specific prior written permission.
     25  *
     26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     36  * POSSIBILITY OF SUCH DAMAGE.
     37  */
     38 
     39 #include <sys/msg.h>
     40 #include <sys/types.h>
     41 #include <sys/uio.h>
     42 #include <sys/wait.h>
     43 #include <fcntl.h>
     44 #include <poll.h>
     45 #include <stdarg.h>
     46 #include <unistd.h>
     47 
     48 /* XXX this is necessary to get the prototypes for the __sigsuspend14
     49  * XXX and __msync13 internal names, instead of the application-visible
     50  * XXX sigsuspend and msync names. It's kind of gross, but we're pretty
     51  * XXX intimate with libc already.
     52  */
     53 #define __LIBC12_SOURCE__
     54 #include <signal.h>
     55 #include <sys/mman.h>
     56 
     57 #include "pthread.h"
     58 #include "pthread_int.h"
     59 
     60 int	_syscall_close(int);
     61 int	_syscall_fcntl(int, int, ...);
     62 int	_syscall_fsync(int);
     63 ssize_t	_syscall_msgrcv(int, void *, size_t, long, int);
     64 int	_syscall_msgsnd(int, const void *, size_t, int);
     65 int	_syscall___msync13(void *, size_t, int);
     66 int	_syscall_nanosleep(const struct timespec *, struct timespec *);
     67 int	_syscall_open(const char *, int, ...);
     68 int	_syscall_poll(struct pollfd *, nfds_t, int);
     69 ssize_t	_syscall_pread(int, void *, size_t, off_t);
     70 ssize_t	_syscall_pwrite(int, const void *, size_t, off_t);
     71 ssize_t	_syscall_read(int, void *, size_t);
     72 ssize_t	_syscall_readv(int, const struct iovec *, int);
     73 int	_syscall_select(int, fd_set *, fd_set *, fd_set *, struct timeval *);
     74 int	_syscall_wait4(pid_t, int *, int, struct rusage *);
     75 ssize_t	_syscall_write(int, const void *, size_t);
     76 ssize_t	_syscall_writev(int, const struct iovec *, int);
     77 
     78 
     79 int
     80 close(int d)
     81 {
     82 	int retval;
     83 	pthread_t self;
     84 
     85 	self = pthread__self();
     86 	pthread__testcancel(self);
     87 	retval = _syscall_close(d);
     88 	pthread__testcancel(self);
     89 
     90 	return retval;
     91 }
     92 
     93 int
     94 fcntl(int fd, int cmd, ...)
     95 {
     96 	int retval;
     97 	pthread_t self;
     98 	va_list ap;
     99 
    100 	self = pthread__self();
    101 	pthread__testcancel(self);
    102 	va_start(ap, cmd);
    103 	retval = _syscall_fcntl(fd, cmd, va_arg(ap, void *));
    104 	va_end(ap);
    105 	pthread__testcancel(self);
    106 
    107 	return retval;
    108 }
    109 
    110 
    111 int
    112 fsync(int d)
    113 {
    114 	int retval;
    115 	pthread_t self;
    116 
    117 	self = pthread__self();
    118 	pthread__testcancel(self);
    119 	retval = _syscall_fsync(d);
    120 	pthread__testcancel(self);
    121 
    122 	return retval;
    123 }
    124 
    125 ssize_t
    126 msgrcv(int msgid, void *msgp, size_t msgsz, long msgtyp, int msgflg)
    127 {
    128 	ssize_t retval;
    129 	pthread_t self;
    130 
    131 	self = pthread__self();
    132 	pthread__testcancel(self);
    133 	retval = _syscall_msgrcv(msgid, msgp, msgsz, msgtyp, msgflg);
    134 	pthread__testcancel(self);
    135 
    136 	return retval;
    137 }
    138 
    139 int
    140 msgsnd(int msgid, const void *msgp, size_t msgsz, int msgflg)
    141 {
    142 	int retval;
    143 	pthread_t self;
    144 
    145 	self = pthread__self();
    146 	pthread__testcancel(self);
    147 	retval = _syscall_msgsnd(msgid, msgp, msgsz, msgflg);
    148 	pthread__testcancel(self);
    149 
    150 	return retval;
    151 }
    152 
    153 int
    154 __msync13(void *addr, size_t len, int flags)
    155 {
    156 	int retval;
    157 	pthread_t self;
    158 
    159 	self = pthread__self();
    160 	pthread__testcancel(self);
    161 	retval = _syscall___msync13(addr, len, flags);
    162 	pthread__testcancel(self);
    163 
    164 	return retval;
    165 }
    166 
    167 int
    168 nanosleep(const struct timespec *rqtp, struct timespec *rmtp)
    169 {
    170 	int retval;
    171 	pthread_t self;
    172 
    173 	self = pthread__self();
    174 	pthread__testcancel(self);
    175 	retval = _syscall_nanosleep(rqtp, rmtp);
    176 	pthread__testcancel(self);
    177 
    178 	return retval;
    179 }
    180 
    181 int
    182 open(const char *path, int flags, ...)
    183 {
    184 	int retval;
    185 	pthread_t self;
    186 	va_list ap;
    187 
    188 	self = pthread__self();
    189 	pthread__testcancel(self);
    190 	va_start(ap, flags);
    191 	retval = _syscall_open(path, flags, va_arg(ap, mode_t));
    192 	va_end(ap);
    193 	pthread__testcancel(self);
    194 
    195 	return retval;
    196 }
    197 
    198 int
    199 poll(struct pollfd *fds, nfds_t nfds, int timeout)
    200 {
    201 	int retval;
    202 	pthread_t self;
    203 
    204 	self = pthread__self();
    205 	pthread__testcancel(self);
    206 	retval = _syscall_poll(fds, nfds, timeout);
    207 	pthread__testcancel(self);
    208 
    209 	return retval;
    210 }
    211 
    212 ssize_t
    213 pread(int d, void *buf, size_t nbytes, off_t offset)
    214 {
    215 	ssize_t retval;
    216 	pthread_t self;
    217 
    218 	self = pthread__self();
    219 	pthread__testcancel(self);
    220 	retval = _syscall_pread(d, buf, nbytes, offset);
    221 	pthread__testcancel(self);
    222 
    223 	return retval;
    224 }
    225 
    226 ssize_t
    227 pwrite(int d, const void *buf, size_t nbytes, off_t offset)
    228 {
    229 	ssize_t retval;
    230 	pthread_t self;
    231 
    232 	self = pthread__self();
    233 	pthread__testcancel(self);
    234 	retval = _syscall_pwrite(d, buf, nbytes, offset);
    235 	pthread__testcancel(self);
    236 
    237 	return retval;
    238 }
    239 
    240 ssize_t
    241 read(int d, void *buf, size_t nbytes)
    242 {
    243 	ssize_t retval;
    244 	pthread_t self;
    245 
    246 	self = pthread__self();
    247 	pthread__testcancel(self);
    248 	retval = _syscall_read(d, buf, nbytes);
    249 	pthread__testcancel(self);
    250 
    251 	return retval;
    252 }
    253 
    254 ssize_t
    255 readv(int d, const struct iovec *iov, int iovcnt)
    256 {
    257 	ssize_t retval;
    258 	pthread_t self;
    259 
    260 	self = pthread__self();
    261 	pthread__testcancel(self);
    262 	retval = _syscall_readv(d, iov, iovcnt);
    263 	pthread__testcancel(self);
    264 
    265 	return retval;
    266 }
    267 
    268 int
    269 select(int nfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds,
    270     struct timeval *timeout)
    271 {
    272 	int retval;
    273 	pthread_t self;
    274 
    275 	self = pthread__self();
    276 	pthread__testcancel(self);
    277 	retval = _syscall_select(nfds, readfds, writefds, exceptfds, timeout);
    278 	pthread__testcancel(self);
    279 
    280 	return retval;
    281 }
    282 
    283 pid_t
    284 wait4(pid_t wpid, int *status, int options, struct rusage *rusage)
    285 {
    286 	pid_t retval;
    287 	pthread_t self;
    288 
    289 	self = pthread__self();
    290 	pthread__testcancel(self);
    291 	retval = _syscall_wait4(wpid, status, options, rusage);
    292 	pthread__testcancel(self);
    293 
    294 	return retval;
    295 }
    296 
    297 ssize_t
    298 write(int d, const void *buf, size_t nbytes)
    299 {
    300 	ssize_t retval;
    301 	pthread_t self;
    302 
    303 	self = pthread__self();
    304 	pthread__testcancel(self);
    305 	retval = _syscall_write(d, buf, nbytes);
    306 	pthread__testcancel(self);
    307 
    308 	return retval;
    309 }
    310 
    311 ssize_t
    312 writev(int d, const struct iovec *iov, int iovcnt)
    313 {
    314 	ssize_t retval;
    315 	pthread_t self;
    316 
    317 	self = pthread__self();
    318 	pthread__testcancel(self);
    319 	retval = _syscall_writev(d, iov, iovcnt);
    320 	pthread__testcancel(self);
    321 
    322 	return retval;
    323 }
    324