| /* Truncate a file given by name. Generic POSIX.1 version. |
| Copyright (C) 1995-2014 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 <sys/types.h> |
| #include <errno.h> |
| #include <unistd.h> |
| #include <fcntl.h> |
| |
| /* Truncate PATH to LENGTH bytes. */ |
| int |
| __truncate (const char *path, off_t length) |
| { |
| int fd, ret, save; |
| |
| fd = __open (path, O_WRONLY | (length == 0 ? O_TRUNC : 0)); |
| if (fd < 0) |
| return -1; |
| |
| if (length == 0) |
| ret = 0; |
| else |
| ret = __ftruncate (fd, length); |
| save = errno; |
| (void) __close (fd); |
| if (ret < 0) |
| __set_errno (save); |
| return ret; |
| } |
| weak_alias (__truncate, truncate) |
