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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)
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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;
 }