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Diffstat (limited to 'sysdeps/posix/ttyname.c')
-rw-r--r--sysdeps/posix/ttyname.c129
1 files changed, 0 insertions, 129 deletions
diff --git a/sysdeps/posix/ttyname.c b/sysdeps/posix/ttyname.c
deleted file mode 100644
index 288e22b307..0000000000
--- a/sysdeps/posix/ttyname.c
+++ /dev/null
@@ -1,129 +0,0 @@
-/* Copyright (C) 1991-2017 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, see
- <http://www.gnu.org/licenses/>. */
-
-#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 <stdlib.h>
-
-char *__ttyname;
-
-static char *getttyname (int fd, dev_t mydev, ino_t myino,
- int save, int *dostat) internal_function;
-
-
-libc_freeres_ptr (static char *getttyname_name);
-
-static char *
-internal_function
-getttyname (int fd, dev_t mydev, ino_t myino, int save, int *dostat)
-{
- static const char dev[] = "/dev";
- static size_t namelen;
- struct stat st;
- DIR *dirstream;
- struct dirent *d;
-
- dirstream = __opendir (dev);
- if (dirstream == NULL)
- {
- *dostat = -1;
- return NULL;
- }
-
- while ((d = __readdir (dirstream)) != NULL)
- if (((ino_t) d->d_fileno == myino || *dostat)
- && strcmp (d->d_name, "stdin")
- && strcmp (d->d_name, "stdout")
- && strcmp (d->d_name, "stderr"))
- {
- size_t dlen = _D_ALLOC_NAMLEN (d);
- if (sizeof (dev) + dlen > namelen)
- {
- free (getttyname_name);
- namelen = 2 * (sizeof (dev) + dlen); /* Big enough. */
- getttyname_name = malloc (namelen);
- if (! getttyname_name)
- {
- *dostat = -1;
- /* Perhaps it helps to free the directory stream buffer. */
- (void) __closedir (dirstream);
- return NULL;
- }
- *((char *) __mempcpy (getttyname_name, dev, sizeof (dev) - 1))
- = '/';
- }
- (void) __mempcpy (&getttyname_name[sizeof (dev)], d->d_name, dlen);
- if (stat (getttyname_name, &st) == 0
-#ifdef _STATBUF_ST_RDEV
- && S_ISCHR (st.st_mode) && st.st_rdev == mydev
-#else
- && (ino_t) d->d_fileno == myino && st.st_dev == mydev
-#endif
- )
- {
- (void) __closedir (dirstream);
- __ttyname = getttyname_name;
- __set_errno (save);
- return getttyname_name;
- }
- }
-
- (void) __closedir (dirstream);
- __set_errno (save);
- return NULL;
-}
-
-/* Return the pathname of the terminal FD is open on, or NULL on errors.
- The returned storage is good only until the next call to this function. */
-char *
-ttyname (int fd)
-{
- struct stat st;
- int dostat = 0;
- char *name;
- int save = errno;
-
- if (!__isatty (fd))
- return NULL;
-
- if (fstat (fd, &st) < 0)
- return NULL;
-
-#ifdef _STATBUF_ST_RDEV
- name = getttyname (fd, st.st_rdev, st.st_ino, save, &dostat);
-#else
- name = getttyname (fd, st.st_dev, st.st_ino, save, &dostat);
-#endif
-
- if (!name && dostat != -1)
- {
- dostat = 1;
-#ifdef _STATBUF_ST_RDEV
- name = getttyname (fd, st.st_rdev, st.st_ino, save, &dostat);
-#else
- name = getttyname (fd, st.st_dev, st.st_ino, save, &dostat);
-#endif
- }
-
- return name;
-}