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authorUlrich Drepper <drepper@redhat.com>1998-09-17 19:51:33 +0000
committerUlrich Drepper <drepper@redhat.com>1998-09-17 19:51:33 +0000
commit9b3c7c3c713d7018c79f0b0ca0b34d386e8a25dd (patch)
tree77802928e3a7d3163bc63c89979295da8260112a /sysdeps/unix/sysv/linux/unlockpt.c
parentd8f2b9ea8cf4fb6d043f2dbbeaaca04d4fd70fc6 (diff)
Update.
1998-09-17 19:34 Ulrich Drepper <drepper@cygnus.com> * sysdeps/unix/sysv/sysv4/bits/utsname.h: Fix typo. Patch by John Tobey <jtobey@banta-im.com>. 1998-09-17 Mark Kettenis <kettenis@phys.uva.nl> * login/pty-internal.h: Removed. Moved constants related to the `grantpt' helper program protocol to ... * login/pty-private.h: ... here. New file. * sysdeps/unix/sysv/linux/ptsname.c (ptsname): Reimplementation to make the function work with kernels >= 2.1.115. * sysdeps/unix/sysv/linux/getpt.c (getpt): Reimplement to call BSD version if using the cloning device fails. * sysdeps/unix/sysv/linux/grantpt.c: New file. * sysdeps/unix/sysv/linux/unlockpt.c: General cleanup. * sysdeps/unix/bsd/getpt.c (__getpt): Largely rewritten to allow use by Linux specific code. * sysdeps/unix/bsd/unlockpt.c: General cleanup. * sysdeps/unix/grantpt.c: Largely rewritten. (pts_name): New function. (grantpt): Use pts_name, check group and permission mode in addition to owner. Try to set the owner, group and permission mode first without invoking the helper program. * login/programs/pt_chown.c: Largely rewritten. Add argp and internationalization support. Use symbolic constants instead of hardwired numbers for permission mode. * sysdeps/unix/bsd/ptsname.c: New file. 1998-09-17 22:04 Tim Waugh <tim@cyberelk.demon.co.uk> * posix/wordexp-test.c: Undo last change. * posix/wordexp.c: Undo last change.
Diffstat (limited to 'sysdeps/unix/sysv/linux/unlockpt.c')
-rw-r--r--sysdeps/unix/sysv/linux/unlockpt.c20
1 files changed, 10 insertions, 10 deletions
diff --git a/sysdeps/unix/sysv/linux/unlockpt.c b/sysdeps/unix/sysv/linux/unlockpt.c
index e20545fe80..4df33198ef 100644
--- a/sysdeps/unix/sysv/linux/unlockpt.c
+++ b/sysdeps/unix/sysv/linux/unlockpt.c
@@ -17,33 +17,33 @@
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
-#include <sys/ioctl.h>
-#include <termios.h>
#include <errno.h>
#include <stdlib.h>
+#include <sys/ioctl.h>
+#include <termios.h>
+
-/* Given a fd on a master pseudoterminal, clear a kernel lock so that
- the slave can be opened. This is to avoid a race between opening the
- master and calling grantpt() to take possession of the slave. */
+/* Unlock the slave pseudo terminal associated with the master pseudo
+ terminal specified by FD. */
int
-unlockpt (fd)
- int fd __attribute__ ((unused));
+unlockpt (int fd)
{
#ifdef TIOCSPTLCK
- int serrno = errno;
+ int save_errno = errno;
int unlock = 0;
if (__ioctl (fd, TIOCSPTLCK, &unlock))
{
if (errno == EINVAL)
{
- __set_errno (serrno);
+ __set_errno (save_errno);
return 0;
}
else
return -1;
}
#endif
- /* On pre-/dev/ptmx kernels this function should be a no-op. */
+ /* If we have no TIOCSPTLCK ioctl, all slave pseudo terminals are
+ unlocked by default. */
return 0;
}