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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/bsd/getpt.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/bsd/getpt.c')
-rw-r--r--sysdeps/unix/bsd/getpt.c74
1 files changed, 49 insertions, 25 deletions
diff --git a/sysdeps/unix/bsd/getpt.c b/sysdeps/unix/bsd/getpt.c
index 3bc34b1814..ec339c8335 100644
--- a/sysdeps/unix/bsd/getpt.c
+++ b/sysdeps/unix/bsd/getpt.c
@@ -17,43 +17,67 @@
    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.  */
 
-#include <sys/types.h>
-#include <fcntl.h>
 #include <errno.h>
-#include <stdlib.h>
+#include <fcntl.h>
+#include <string.h>
+#include <unistd.h>
+
+
+/* Prefix for master pseudo terminal nodes.  */
+#define _PATH_PTY "/dev/pty"
 
-#include "pty-internal.h"
 
-/* Per the FreeBSD-3.0 manpages: pty masters are named
-   /dev/pty[p-sP-S][0-9a-v].  I hope EIO is the right
-   errno in the "already open" case; it doesn't say.  */
-static const char pn1[] = "pqrsPQRS";
-static const char pn2[] = "0123456789abcdefghijklmnopqrstuv";
+/* Letters indicating a series of pseudo terminals.  */
+#ifndef PTYNAME1
+#define PTYNAME1 "pqrsPQRS"
+#endif
+const char *__libc_ptyname1 = PTYNAME1;
 
-/* Open the master side of a pseudoterminal and return its file
-   descriptor, or -1 on error.  BSD version.  */
+/* Letters indicating the position within a series.  */
+#ifndef PTYNAME2
+#define PTYNAME2 "0123456789abcdefghijklmnopqrstuv";
+#endif
+const char *__libc_ptyname2 = PTYNAME2;
+
+
+/* Open a master pseudo terminal and return its file descriptor.  */
 int
-__getpt ()
+__getpt (void)
 {
-  int fd;
-  const char *i, *j;
-  char namebuf[PTYNAMELEN];
+  char buf[sizeof (_PATH_PTY) + 2];
+  const char *p, *q;
+  char *s;
+  
+  s = __stpcpy (buf, _PATH_PTY);
+  s[0] = '?';
+  s[1] = '?';
+  s[2] = 0;
 
-  strcpy (namebuf, "/dev/pty");
-  namebuf[10] = '\0';
-  for (i = pn1; *i; ++i)
+  for (p = __libc_ptyname1; *p; p++)
     {
-      namebuf[8] = *i;
-      for (j = pn2; *j; ++j)
-        {
-	  namebuf[9] = *j;
-	  fd = open (namebuf, O_RDWR);
+      s[0] = *p;
+
+      for (q = __libc_ptyname2; *q; q++)
+	{
+	  int fd;
+	  
+	  s[1] = *q;
+	  
+	  fd = __open (buf, O_RDWR);
 	  if (fd != -1)
-	    return fd;
+	    {
+	      if (__isatty (fd))
+		return fd;
+	      
+	      __close (fd);
+	      continue;
+	    }
+	  
 	  if (errno != EIO)
 	    return -1;
-        }
+	}
     }
+
   __set_errno (ENFILE);
   return -1;
 }