d9898ee8 |
1 | /* |
2 | ** Copyright 1998 - 1999 Double Precision, Inc. See COPYING for |
3 | ** distribution information. |
4 | */ |
5 | |
d9898ee8 |
6 | #if HAVE_CONFIG_H |
7 | #include "config.h" |
8 | #endif |
9 | #include <sys/types.h> |
10 | #if HAVE_FCNTL_H |
11 | #include <fcntl.h> |
12 | #endif |
13 | #if HAVE_SYS_FCNTL_H |
14 | #include <sys/fcntl.h> |
15 | #endif |
16 | #include "liblock.h" |
17 | |
18 | int ll_lockfd(int fd, int ltype, LL_OFFSET_TYPE start, LL_OFFSET_TYPE len) |
19 | { |
20 | #if HAS_FLOCK_T |
21 | flock_t ft; |
22 | #else |
23 | struct flock ft; |
24 | #endif |
25 | |
26 | ft.l_type=ltype & ll_unlock ? F_UNLCK: |
27 | ltype & ll_writelock ? F_WRLCK:F_RDLCK; |
28 | ft.l_whence=ltype & ll_whence_curpos ? 1: |
29 | ltype & ll_whence_end ? 2:0; |
30 | ft.l_start=start; |
31 | ft.l_len=len; |
32 | |
33 | return (fcntl(fd, (ltype & ll_unlock) == 0 && (ltype & ll_wait) |
34 | ? F_SETLKW:F_SETLK, &ft)); |
35 | } |