[T106][ZXW-22]7520V3SCV2.01.01.02P42U09_VEC_V0.8_AP_VEC origin source commit
Change-Id: Ic6e05d89ecd62fc34f82b23dcf306c93764aec4b
diff --git a/ap/build/uClibc/libc/stdlib/ptsname.c b/ap/build/uClibc/libc/stdlib/ptsname.c
new file mode 100644
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--- /dev/null
+++ b/ap/build/uClibc/libc/stdlib/ptsname.c
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+/* Copyright (C) 1998, 2000, 2001, 2002 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Zack Weinberg <zack@rabi.phys.columbia.edu>, 1998.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include <stdio.h>
+#include <errno.h>
+#include <paths.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/ioctl.h>
+#include <sys/stat.h>
+#include <sys/sysmacros.h>
+#include <termios.h>
+#include <unistd.h>
+#include <bits/uClibc_uintmaxtostr.h>
+
+
+#if !defined __UNIX98PTY_ONLY__
+
+/* Check if DEV corresponds to a master pseudo terminal device. */
+#define MASTER_P(Dev) \
+ (major ((Dev)) == 2 \
+ || (major ((Dev)) == 4 && minor ((Dev)) >= 128 && minor ((Dev)) < 192) \
+ || (major ((Dev)) >= 128 && major ((Dev)) < 136))
+
+/* Check if DEV corresponds to a slave pseudo terminal device. */
+#define SLAVE_P(Dev) \
+ (major ((Dev)) == 3 \
+ || (major ((Dev)) == 4 && minor ((Dev)) >= 192 && minor ((Dev)) < 256) \
+ || (major ((Dev)) >= 136 && major ((Dev)) < 144))
+
+/* Note that major number 4 corresponds to the old BSD style pseudo
+ terminal devices. As of Linux 2.1.115 these are no longer
+ supported. They have been replaced by major numbers 2 (masters)
+ and 3 (slaves). */
+
+/* The are declared in getpt.c. */
+extern const char __libc_ptyname1[] attribute_hidden;
+extern const char __libc_ptyname2[] attribute_hidden;
+
+#endif
+
+/* Directory where we can find the slave pty nodes. */
+#define _PATH_DEVPTS "/dev/pts/"
+
+/* 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;
+#if !defined __UNIX98PTY_ONLY__
+ struct stat st;
+#endif
+ int ptyno;
+
+ if (buf == NULL)
+ {
+ errno = EINVAL;
+ return EINVAL;
+ }
+
+#if !defined __UNIX98PTY_ONLY__
+ if (!isatty (fd))
+ {
+ errno = ENOTTY;
+ return ENOTTY;
+ }
+#elif !defined TIOCGPTN
+# error "__UNIX98PTY_ONLY__ enabled but TIOCGPTN ioctl not supported by your kernel."
+#endif
+#ifdef TIOCGPTN
+ if (ioctl (fd, TIOCGPTN, &ptyno) == 0)
+ {
+ /* Buffer we use to print the number in. */
+ char numbuf[__BUFLEN_INT10TOSTR];
+ static const char devpts[] = _PATH_DEVPTS;
+ char *p;
+
+ p = _int10tostr(&numbuf[sizeof numbuf - 1], ptyno);
+
+ if (buflen < sizeof(devpts) + (size_t)(&numbuf[sizeof(numbuf) - 1] - p))
+ {
+ errno = ERANGE;
+ return ERANGE;
+ }
+
+ strcpy (buf, devpts);
+ strcat (buf, p);
+ /* Note: Don't bother with stat on the slave name and checking the
+ driver's major device number - the ioctl above succeeded so
+ we know the fd was a Unix'98 master and the /dev/pts/ prefix
+ is set by definition. If the name isn't really a slave PTY,
+ the system is misconfigured anyway - something else will fail
+ later.
+ */
+ errno = save_errno;
+ return 0;
+ }
+#endif
+#if defined __UNIX98PTY_ONLY__
+ else
+ {
+ /* If the ioctl fails it wasn't a Unix 98 master PTY */
+ errno = ENOTTY;
+ return ENOTTY;
+ }
+#else
+# if defined TIOCGPTN
+ else if (errno == EINVAL)
+# endif
+ {
+ char *p;
+
+ if (buflen < strlen (_PATH_TTY) + 3)
+ {
+ errno = ERANGE;
+ return ERANGE;
+ }
+
+ if (fstat (fd, &st) < 0)
+ return errno;
+
+ /* Check if FD really is a master pseudo terminal. */
+ if (! MASTER_P (st.st_rdev))
+ {
+ errno = ENOTTY;
+ return ENOTTY;
+ }
+
+ ptyno = minor (st.st_rdev);
+ /* This is for the old BSD pseudo terminals. As of Linux
+ 2.1.115 these are no longer supported. */
+ if (major (st.st_rdev) == 4)
+ ptyno -= 128;
+
+ if (ptyno / 16 >= strlen (__libc_ptyname1))
+ {
+ errno = ENOTTY;
+ return ENOTTY;
+ }
+
+ strcpy (buf, _PATH_TTY);
+ p = buf + strlen (buf);
+ p[0] = __libc_ptyname1[ptyno / 16];
+ p[1] = __libc_ptyname2[ptyno % 16];
+ p[2] = '\0';
+ }
+
+ if (stat(buf, &st) < 0)
+ return errno;
+
+ /* Check if the name we're about to return really corresponds to a
+ slave pseudo terminal. */
+ if (! S_ISCHR (st.st_mode) || ! SLAVE_P (st.st_rdev))
+ {
+ /* This really is a configuration problem. */
+ errno = ENOTTY;
+ return ENOTTY;
+ }
+#endif
+
+ errno = save_errno;
+ return 0;
+}
+libc_hidden_def(ptsname_r)
+
+/* 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)
+{
+ static char buffer[sizeof (_PATH_DEVPTS) + 20];
+
+ return ptsname_r (fd, buffer, sizeof (buffer)) != 0 ? NULL : buffer;
+}