diff options
Diffstat (limited to 'sysdeps/posix/flock.c')
-rw-r--r-- | sysdeps/posix/flock.c | 56 |
1 files changed, 0 insertions, 56 deletions
diff --git a/sysdeps/posix/flock.c b/sysdeps/posix/flock.c deleted file mode 100644 index 5aeba7d1b8..0000000000 --- a/sysdeps/posix/flock.c +++ /dev/null @@ -1,56 +0,0 @@ -/* Copyright (C) 1992-2017 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/>. */ - -/* This file implements the `flock' function in terms of the POSIX.1 `fcntl' - locking mechanism. In 4BSD, these are two incompatible locking mechanisms, - perhaps with different semantics? */ - -#include <errno.h> -#include <unistd.h> -#include <fcntl.h> -#include <sys/file.h> - -/* Apply or remove an advisory lock, according to OPERATION, - on the file FD refers to. */ -int -__flock (int fd, int operation) -{ - struct flock lbuf; - - switch (operation & ~LOCK_NB) - { - case LOCK_SH: - lbuf.l_type = F_RDLCK; - break; - case LOCK_EX: - lbuf.l_type = F_WRLCK; - break; - case LOCK_UN: - lbuf.l_type = F_UNLCK; - break; - default: - __set_errno (EINVAL); - return -1; - } - - lbuf.l_whence = SEEK_SET; - lbuf.l_start = lbuf.l_len = 0L; /* Lock the whole file. */ - - return __fcntl (fd, (operation & LOCK_NB) ? F_SETLK : F_SETLKW, &lbuf); -} - -weak_alias (__flock, flock) |