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/*-------------------------------------------------------------------.
| Copyright 2001 Alexandre Duret-Lutz <duret_g@epita.fr> |
| |
| This program is free software; you can redistribute it and/or |
| modify it under the terms of the GNU General Public License as |
| published by the Free Software Foundation; either version 2 of the |
| License, or (at your option) any later version. |
| |
| This program 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 |
| General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program; if not, write to the Free Software |
| Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 02111-1307 USA |
`-------------------------------------------------------------------*/
/* Lock a file, blocking if needed.
If EXCLUSIVE is 0 then many processes can lock the
file (usually this is for reading), otherwise only one
process can lock the file (for writing).
Return 0 on success, something else on error. */
int file_lock (int fd, int exlusive);
/* Unlock a file. */
int file_unlock (int fd);
/* WARNING: under Windows, these functions will lock or unlock
the 10 next bytes. Therefore you should make sure that
you always call these functions from the same position.
*/
|
