0f7d684755
Here are the diffs for libc_r to get it one step closer to P1003.1c These make most of the thread/mutex/condvar structures opaque to the user. There are three functions which have been renamed with _np suffixes because they are extensions to P1003.1c (I did them for JAVA, which needs to suspend/resume threads and also start threads suspended). I've created a new header (pthread_np.h) for the non-POSIX stuff. The egrep tags stuff in /usr/src/lib/libc_r/Makefile that I uncommented doesn't work. I think its best to delete it. I don't think libc_r needs tags anyway, 'cause most of the source is in libc which does have tags. also: Here's the first batch of man pages for the thread functions. The diff to /usr/src/lib/libc_r/Makefile removes some stuff that was inherited from /usr/src/lib/libc/Makefile that should only be done with libc. also: I should have sent this diff with the pthread(3) man page. It allows people to type make -DWANT_LIBC_R world to get libc_r built with the rest of the world. I put this in the pthread(3) man page. The default is still not to build libc_r. also: The diff attached adds a pthread(3) man page to /usr/src/share/man/man3. The idea is that without libc_r installed, this man page will give people enough info to know that they have to build libc_r.
113 lines
3.9 KiB
C
113 lines
3.9 KiB
C
/*
|
|
* Copyright (c) 1995 John Birrell <jb@cimlogic.com.au>.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by John Birrell.
|
|
* 4. Neither the name of the author nor the names of any co-contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
*/
|
|
#include <errno.h>
|
|
#include <fcntl.h>
|
|
#include <unistd.h>
|
|
#ifdef _THREAD_SAFE
|
|
#include <pthread.h>
|
|
#include "pthread_private.h"
|
|
|
|
int
|
|
execve(const char *name, char *const * argv, char *const * envp)
|
|
{
|
|
int flags;
|
|
int i;
|
|
int ret;
|
|
struct sigaction act;
|
|
struct sigaction oact;
|
|
struct itimerval itimer;
|
|
|
|
/* Disable the interval timer: */
|
|
itimer.it_interval.tv_sec = 0;
|
|
itimer.it_interval.tv_usec = 0;
|
|
itimer.it_value.tv_sec = 0;
|
|
itimer.it_value.tv_usec = 0;
|
|
setitimer(ITIMER_VIRTUAL, &itimer, NULL);
|
|
|
|
/* Close the pthread kernel pipe: */
|
|
_thread_sys_close(_thread_kern_pipe[0]);
|
|
_thread_sys_close(_thread_kern_pipe[1]);
|
|
|
|
/*
|
|
* Enter a loop to set all file descriptors to blocking
|
|
* if they were not created as non-blocking:
|
|
*/
|
|
for (i = 0; i < _thread_dtablesize; i++) {
|
|
/* Check if this file descriptor is in use: */
|
|
if (_thread_fd_table[i] != NULL &&
|
|
!(_thread_fd_table[i]->flags & O_NONBLOCK)) {
|
|
/* Get the current flags: */
|
|
flags = _thread_sys_fcntl(i, F_GETFL, NULL);
|
|
/* Clear the nonblocking file descriptor flag: */
|
|
_thread_sys_fcntl(i, F_SETFL, flags & ~O_NONBLOCK);
|
|
}
|
|
}
|
|
|
|
/* Enter a loop to adopt the signal actions for the running thread: */
|
|
for (i = 1; i < NSIG; i++) {
|
|
/* Check for signals which cannot be caught: */
|
|
if (i == SIGKILL || i == SIGSTOP) {
|
|
/* Don't do anything with these signals. */
|
|
} else {
|
|
/*
|
|
* Check if the running thread is ignoring this
|
|
* signal:
|
|
*/
|
|
if (_thread_run->act[i - 1].sa_handler == SIG_IGN) {
|
|
/* Continue to ignore this signal: */
|
|
act.sa_handler = SIG_IGN;
|
|
} else {
|
|
/* Use the default handler for this signal: */
|
|
act.sa_handler = SIG_DFL;
|
|
}
|
|
|
|
/* Copy the mask and flags for this signal: */
|
|
act.sa_mask = _thread_run->act[i - 1].sa_mask;
|
|
act.sa_flags = _thread_run->act[i - 1].sa_flags;
|
|
|
|
/* Change the signal action for the process: */
|
|
_thread_sys_sigaction(i, &act, &oact);
|
|
}
|
|
}
|
|
|
|
/* Execute the process: */
|
|
_thread_sys_sigprocmask(SIG_SETMASK, &_thread_run->sigmask, NULL);
|
|
|
|
/* Execute the process: */
|
|
ret = _thread_sys_execve(name, argv, envp);
|
|
|
|
/* Return the completion status: */
|
|
return (ret);
|
|
}
|
|
#endif
|