2002-07-23 Jeff Johnston <jjohnstn@redhat.com>

        * libc/include/stdio.h: Move fcloseall prototype within
        #ifndef _REENT_ONLY section.
        * libc/sys/linux/Makefile.am: Add new files.
        * libc/sys/linux/Makefile.in: Regenerated.
        * libc/sys/linux/sys/stdio.h: Add ctermid prototype.
        * libc/sys/linux/sys/unistd.h: Add ttyname_r prototype.
        * libc/sys/linux/sys/types.h: Add ino64_t type.
        * libc/sys/linux/ctermid.c: New file.
        * libc/sys/linux/ttyname_r.c: Ditto.
        * libc/sys/linux/readdir64.c: Ditto.

1 files changed, 194 insertions, 0 deletions

diff --git a/newlib/libc/sys/linux/ttyname_r.c b/newlib/libc/sys/linux/ttyname_r.c
new file mode 100644
index 000000000..a0cc90199
--- /dev/null
+++ b/newlib/libc/sys/linux/ttyname_r.c
@@ -0,0 +1,194 @@
+/* Copyright (C) 1991,92,93,1995-1999,2000,2001 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 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 <errno.h>
+#include <limits.h>
+#include <stddef.h>
+#include <dirent.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <machine/weakalias.h>
+
+static int getttyname_r (char *buf, size_t buflen,
+			 dev_t mydev, ino64_t myino, int save,
+			 int *dostat);
+
+extern struct dirent64 *__readdir64 (DIR *);
+
+#define __set_errno(x) (errno = (x))
+
+static int
+getttyname_r (char *buf, size_t buflen, dev_t mydev, ino64_t myino,
+	      int save, int *dostat)
+{
+  struct stat64 st;
+  DIR *dirstream;
+  struct dirent64 *d;
+  size_t devlen = strlen (buf);
+
+  dirstream = opendir (buf);
+  if (dirstream == NULL)
+    {
+      *dostat = -1;
+      return errno;
+    }
+
+  while ((d = __readdir64 (dirstream)) != NULL)
+    {
+      if ((d->d_ino == myino || *dostat)
+          && strcmp (d->d_name, "stdin")
+	  && strcmp (d->d_name, "stdout")
+	  && strcmp (d->d_name, "stderr"))
+        {
+	  size_t needed = strlen (d->d_name) + 1;
+
+	  if (needed > buflen)
+	    {
+	      *dostat = -1;
+	      (void) closedir (dirstream);
+	      __set_errno (ERANGE);
+	      return ERANGE;
+	    }
+
+	  strncpy (buf + devlen, d->d_name, needed);
+
+	  if (stat64 (buf, &st) == 0
+#ifdef _STATBUF_ST_RDEV
+	      && S_ISCHR (st.st_mode) && st.st_rdev == mydev
+#else
+	      && d->d_ino == myino && st.st_dev == mydev
+#endif
+	     )
+	    {
+	      (void) closedir (dirstream);
+	      __set_errno (save);
+	      return 0;
+	    }
+        }
+    }
+
+  (void) closedir (dirstream);
+  __set_errno (save);
+  /* It is not clear what to return in this case.  `isatty' says FD
+     refers to a TTY but no entry in /dev has this inode.  */
+  return ENOTTY;
+}
+
+/* Store at most BUFLEN character of the pathname of the terminal FD is
+   open on in BUF.  Return 0 on success,  otherwise an error number.  */
+int
+__ttyname_r (int fd, char *buf, size_t buflen)
+{
+  char procname[30];
+  struct stat64 st, st1;
+  int dostat = 0;
+  int save = errno;
+  int ret;
+
+  /* Test for the absolute minimal size.  This makes life easier inside
+     the loop.  */
+  if (!buf)
+    {
+      __set_errno (EINVAL);
+      return EINVAL;
+    }
+
+  if (buflen < sizeof ("/dev/pts/"))
+    {
+      __set_errno (ERANGE);
+      return ERANGE;
+    }
+
+  if (!isatty (fd))
+    {
+      __set_errno (ENOTTY);
+      return ENOTTY;
+    }
+
+  /* We try using the /proc filesystem.  */
+  sprintf (procname, "/proc/self/fd/%d", fd);
+
+  ret = readlink (procname, buf, buflen - 1);
+  if (ret != -1 && buf[0] != '[')
+    {
+      buf[ret] = '\0';
+      return 0;
+    }
+  if (ret == -1 && errno == ENAMETOOLONG)
+    {
+      __set_errno (ERANGE);
+      return ERANGE;
+    }
+
+  if (fstat64 (fd, &st) < 0)
+    return errno;
+
+  /* Prepare the result buffer.  */
+  memcpy (buf, "/dev/pts/", sizeof ("/dev/pts/"));
+  buflen -= sizeof ("/dev/pts/") - 1;
+
+  if (stat64 (buf, &st1) == 0 && S_ISDIR (st1.st_mode))
+    {
+#ifdef _STATBUF_ST_RDEV
+      ret = getttyname_r (buf, buflen, st.st_rdev, st.st_ino, save,
+			  &dostat);
+#else
+      ret = getttyname_r (buf, buflen, st.st_dev, st.st_ino, save,
+			  &dostat);
+#endif
+    }
+  else
+    {
+      __set_errno (save);
+      ret = ENOENT;
+    }
+
+  if (ret && dostat != -1)
+    {
+      buf[sizeof ("/dev/") - 1] = '\0';
+      buflen += sizeof ("pts/") - 1;
+#ifdef _STATBUF_ST_RDEV
+      ret = getttyname_r (buf, buflen, st.st_rdev, st.st_ino, save,
+			  &dostat);
+#else
+      ret = getttyname_r (buf, buflen, st.st_dev, st.st_ino, save,
+			  &dostat);
+#endif
+    }
+
+  if (ret && dostat != -1)
+    {
+      buf[sizeof ("/dev/") - 1] = '\0';
+      dostat = 1;
+#ifdef _STATBUF_ST_RDEV
+      ret = getttyname_r (buf, buflen, st.st_rdev, st.st_ino,
+			  save, &dostat);
+#else
+      ret = getttyname_r (buf, buflen, st.st_dev, st.st_ino,
+			  save, &dostat);
+#endif
+    }
+
+  return ret;
+}
+
+weak_alias (__ttyname_r, ttyname_r)