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When about to do an execve(), don't reset the O_NONBLOCK flag on any file

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descriptors that have the close-on-exec flag set, as that will have no
effect anyway and might screw something else up if the file descriptor
happens to be shared with another process.

PR:		standards/43335
MFC after:	1 week
This commit is contained in:
Archie Cobbs 2002-11-15 00:34:28 +00:00
parent ac244ef31f
commit e46cac58cd
1 changed files with 4 additions and 0 deletions
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4
lib/libc_r/uthread/uthread_execve.c
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@ -69,6 +69,10 @@ _execve(const char *name, char *const * argv, char *const * envp)
/* Check if this file descriptor is in use: */
if (_thread_fd_table[i] != NULL &&
(_thread_fd_getflags(i) & O_NONBLOCK) == 0) {
/* Skip if the close-on-exec flag is set */
flags = __sys_fcntl(i, F_GETFD, NULL);
if ((flags & FD_CLOEXEC) != 0)
continue; /* don't bother, no point */
/* Get the current flags: */
flags = __sys_fcntl(i, F_GETFL, NULL);
/* Clear the nonblocking file descriptor flag: */