diff options
Diffstat (limited to 'newlib/libc/sys/linux/ttyname_r.c')
| -rw-r--r-- | newlib/libc/sys/linux/ttyname_r.c | 192 |
1 files changed, 0 insertions, 192 deletions
diff --git a/newlib/libc/sys/linux/ttyname_r.c b/newlib/libc/sys/linux/ttyname_r.c deleted file mode 100644 index efad76a0e..000000000 --- a/newlib/libc/sys/linux/ttyname_r.c +++ /dev/null @@ -1,192 +0,0 @@ -/* 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 *); - -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) |