| 1 | /* |
| 2 | ** Copyright 1998 - 1999 Double Precision, Inc. See COPYING for |
| 3 | ** distribution information. |
| 4 | */ |
| 5 | |
| 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 | } |