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Prevent dup2(2) from closing internal libc_r pipe descriptors.

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PR:		misc/28947
Reviewed by:	jasone, ru
Approved by:	jasone, ru
MFC after:	1 week
This commit is contained in:
Maxim Konovalov 2002-02-14 15:26:59 +00:00
parent 0878d2e5e9
commit b85282ba08
1 changed files with 2 additions and 1 deletions
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3
lib/libc_r/uthread/uthread_dup2.c
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@ -45,7 +45,8 @@ _dup2(int fd, int newfd)
int newfd_opened;
/* Check if the file descriptor is out of range: */
if (newfd < 0 || newfd >= _thread_dtablesize) {
if (newfd < 0 || newfd >= _thread_dtablesize ||
newfd == _thread_kern_pipe[0] || newfd == _thread_kern_pipe[1]) {
/* Return a bad file descriptor error: */
errno = EBADF;
ret = -1;