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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
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')
-rw-r--r--sysdeps/unix/bsd/getpt.c74
-rw-r--r--sysdeps/unix/bsd/ptsname.c78
-rw-r--r--sysdeps/unix/bsd/unlockpt.c20
3 files changed, 135 insertions, 37 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;
}
diff --git a/sysdeps/unix/bsd/ptsname.c b/sysdeps/unix/bsd/ptsname.c
new file mode 100644
index 0000000000..83e3890e7c
--- /dev/null
+++ b/sysdeps/unix/bsd/ptsname.c
@@ -0,0 +1,78 @@
+/* Copyright (C) 1998 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include <errno.h>
+#include <paths.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+/* Static buffer for `ptsname'. */
+static char buffer[sizeof (_PATH_TTY) + 2];
+
+
+/* Return the pathname of the pseudo terminal slave assoicated with
+ the master FD is open on, or NULL on errors.
+ The returned storage is good until the next call to this function. */
+char *
+ptsname (int fd)
+{
+ return __ptsname_r (fd, buffer, sizeof (buffer)) != 0 ? NULL : buffer;
+}
+
+
+/* Store at most BUFLEN characters of the pathname of the slave pseudo
+ terminal associated with the master FD is open on in BUF.
+ Return 0 on success, otherwise an error number. */
+int
+__ptsname_r (int fd, char *buf, size_t buflen)
+{
+ int save_errno = errno;
+ struct stat st;
+
+ if (buf == NULL)
+ {
+ __set_errno (EINVAL);
+ return EINVAL;
+ }
+
+ if (!__isatty (fd))
+ {
+ __set_errno (ENOTTY);
+ return ENOTTY;
+ }
+
+ if (buflen < strlen (_PATH_TTY) + 3)
+ {
+ __set_errno (ERANGE);
+ return ERANGE;
+ }
+
+ if (__ttyname_r (fd, buf, buflen) != 0)
+ return errno;
+
+ buf[sizeof (_PATH_DEV) - 1] = 't';
+
+ if (__stat (buf, &st) < 0)
+ return errno;
+
+ __set_errno (save_errno);
+ return 0;
+}
+weak_alias (__ptsname_r, ptsname_r)
diff --git a/sysdeps/unix/bsd/unlockpt.c b/sysdeps/unix/bsd/unlockpt.c
index b25231c865..de4db5a48e 100644
--- a/sysdeps/unix/bsd/unlockpt.c
+++ b/sysdeps/unix/bsd/unlockpt.c
@@ -17,25 +17,21 @@
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
+#include <paths.h>
#include <stdlib.h>
+#include <string.h>
#include <unistd.h>
-#include "pty-internal.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.
-
- BSD doesn't have this lock, but what it does have is revoke(). */
+/* Unlock the slave pseudo terminal associated with the master pseudo
+ terminal specified by FD. */
int
-unlockpt (fd)
- int fd;
+unlockpt (int fd)
{
- char buf[PTYNAMELEN];
+ char buf[sizeof (_PATH_TTY) + 2];
- if (__ptsname_r (fd, buf, PTYNAMELEN))
+ /* BSD doesn't have a lock, but it does have `revoke'. */
+ if (__ptsname_r (fd, buf, sizeof (buf)))
return -1;
-
return revoke (buf);
}