diff options
Diffstat (limited to 'sysdeps/posix/ttyname_r.c')
| -rw-r--r-- | sysdeps/posix/ttyname_r.c | 156 |
1 files changed, 0 insertions, 156 deletions
diff --git a/sysdeps/posix/ttyname_r.c b/sysdeps/posix/ttyname_r.c deleted file mode 100644 index 56bf18e4bc..0000000000 --- a/sysdeps/posix/ttyname_r.c +++ /dev/null @@ -1,156 +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> - -#ifndef MIN -# define MIN(a, b) ((a) < (b) ? (a) : (b)) -#endif - -static const char dev[] = "/dev"; - -static int getttyname_r (int fd, char *buf, size_t buflen, - dev_t mydev, ino_t myino, int save, - int *dostat) __THROW internal_function; - -static int -internal_function -getttyname_r (int fd, char *buf, size_t buflen, dev_t mydev, ino_t myino, - int save, int *dostat) -{ - struct stat st; - DIR *dirstream; - struct dirent *d; - - dirstream = __opendir (dev); - if (dirstream == NULL) - { - *dostat = -1; - return errno; - } - - 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")) - { - char *cp; - size_t needed = _D_EXACT_NAMLEN (d) + 1; - - if (needed > buflen) - { - *dostat = -1; - (void) __closedir (dirstream); - __set_errno (ERANGE); - return ERANGE; - } - - cp = __stpncpy (&buf[sizeof (dev)], d->d_name, needed); - cp[0] = '\0'; - - if (stat (buf, &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); - __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) -{ - struct stat st; - 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 < (int) (sizeof (dev) + 1)) - { - __set_errno (ERANGE); - return ERANGE; - } - - if (!__isatty (fd)) - { - __set_errno (ENOTTY); - return ENOTTY; - } - - if (fstat (fd, &st) < 0) - return errno; - - /* Prepare the result buffer. */ - memcpy (buf, dev, sizeof (dev) - 1); - buf[sizeof (dev) - 1] = '/'; - buflen -= sizeof (dev); - -#ifdef _STATBUF_ST_RDEV - ret = getttyname_r (fd, buf, buflen, st.st_rdev, st.st_ino, save, - &dostat); -#else - ret = getttyname_r (fd, buf, buflen, st.st_dev, st.st_ino, save, - &dostat); -#endif - - if (ret && dostat != -1) - { - dostat = 1; -#ifdef _STATBUF_ST_RDEV - ret = getttyname_r (fd, buf, buflen, st.st_rdev, st.st_ino, - save, &dostat); -#else - ret = getttyname_r (fd, buf, buflen, st.st_dev, st.st_ino, - save, &dostat); -#endif - } - - return ret; -} - -weak_alias (__ttyname_r, ttyname_r) |