diff options
Diffstat (limited to 'sysdeps')
| -rw-r--r-- | sysdeps/unix/grantpt.c | 22 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/grantpt.c | 88 |
2 files changed, 19 insertions, 91 deletions
diff --git a/sysdeps/unix/grantpt.c b/sysdeps/unix/grantpt.c index bdedbacec8..ff28179bc7 100644 --- a/sysdeps/unix/grantpt.c +++ b/sysdeps/unix/grantpt.c @@ -1,4 +1,4 @@ -/* Copyright (C) 1998, 2000, 2001, 2002 Free Software Foundation, Inc. +/* Copyright (C) 1998, 2000, 2001, 2002, 2009 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Zack Weinberg <zack@rabi.phys.columbia.edu>, 1998. @@ -115,8 +115,24 @@ grantpt (int fd) gid_t gid; pid_t pid; - if (pts_name (fd, &buf, sizeof (_buf))) - return -1; + if (__builtin_expect (pts_name (fd, &buf, sizeof (_buf)), 0)) + { + int save_errno = errno; + + /* Check, if the file descriptor is valid. pts_name returns the + wrong errno number, so we cannot use that. */ + if (__libc_fcntl (fd, F_GETFD) == -1 && errno == EBADF) + return -1; + + /* If the filedescriptor is no TTY, grantpt has to set errno + to EINVAL. */ + if (save_errno == ENOTTY) + __set_errno (EINVAL); + else + __set_errno (save_errno); + + return -1; + } if (__xstat64 (_STAT_VER, buf, &st) < 0) goto cleanup; diff --git a/sysdeps/unix/sysv/linux/grantpt.c b/sysdeps/unix/sysv/linux/grantpt.c deleted file mode 100644 index c858f89c8b..0000000000 --- a/sysdeps/unix/sysv/linux/grantpt.c +++ /dev/null @@ -1,88 +0,0 @@ -/* Copyright (C) 1998, 1999, 2001, 2002, 2009 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 <fcntl.h> -#include <limits.h> -#include <stdlib.h> -#include <sys/statfs.h> - -#include "linux_fsinfo.h" - -/* Prototype for function that changes ownership and access permission - for slave pseudo terminals that do not live on a `devpts' - filesystem. */ -static int __unix_grantpt (int fd); - -/* Prototype for private function that gets the name of the slave - pseudo terminal in a safe way. */ -static int pts_name (int fd, char **pts, size_t buf_len); - -/* Change the ownership and access permission of the slave pseudo - terminal associated with the master pseudo terminal specified - by FD. */ -int -grantpt (int fd) -{ - struct statfs fsbuf; -#ifdef PATH_MAX - char _buf[PATH_MAX]; -#else - char _buf[512]; -#endif - char *buf = _buf; - - if (__builtin_expect (pts_name (fd, &buf, sizeof (_buf)), 0)) - { - int save_errno = errno; - - /* Check, if the file descriptor is valid. pts_name returns the - wrong errno number, so we cannot use that. */ - if (__libc_fcntl (fd, F_GETFD) == -1 && errno == EBADF) - return -1; - - /* If the filedescriptor is no TTY, grantpt has to set errno - to EINVAL. */ - if (save_errno == ENOTTY) - __set_errno (EINVAL); - else - __set_errno (save_errno); - - return -1; - } - - if (__statfs (buf, &fsbuf) < 0) - return -1; - - /* If the slave pseudo terminal lives on a `devpts' filesystem, the - ownership is already set and the access permission might already - be set. */ - if (fsbuf.f_type == DEVPTS_SUPER_MAGIC || fsbuf.f_type == DEVFS_SUPER_MAGIC) - { - struct stat64 st; - - if (fstat (fd, &st) == 0 - && (st.st_mode & ACCESSPERMS) == (S_IRUSR|S_IWUSR|S_IWGRP)) - return 0; - } - - return __unix_grantpt (fd); -} - -#define grantpt static __unix_grantpt -#include <sysdeps/unix/grantpt.c> |