| d9898ee8 |
1 | /* |
| 2 | ** Copyright 1998 - 1999 Double Precision, Inc. See COPYING for |
| 3 | ** distribution information. |
| 4 | */ |
| 5 | |
| d9898ee8 |
6 | |
| 7 | #if HAVE_CONFIG_H |
| 8 | #include "config.h" |
| 9 | #endif |
| 10 | #include <sys/types.h> |
| 11 | #if HAVE_FCNTL_H |
| 12 | #include <fcntl.h> |
| 13 | #endif |
| 14 | #if HAVE_SYS_FCNTL_H |
| 15 | #include <sys/fcntl.h> |
| 16 | #endif |
| 17 | #if HAVE_UNISTD_H |
| 18 | #include <unistd.h> |
| 19 | #endif |
| 20 | #if HAVE_ERRNO_H |
| 21 | #include <errno.h> |
| 22 | #endif |
| 23 | #include "liblock.h" |
| 24 | |
| 25 | int ll_lockfd(int fd, int ltype, LL_OFFSET_TYPE start, LL_OFFSET_TYPE len) |
| 26 | { |
| 27 | off_t p; |
| 28 | |
| 29 | if (ltype & ll_whence_curpos) |
| 30 | p=lseek(fd, start, SEEK_CUR); |
| 31 | else if (ltype && ll_whence_end) |
| 32 | p=lseek(fd, start, SEEK_END); |
| 33 | else p=lseek(fd, start, SEEK_SET); |
| 34 | |
| 35 | if (p < 0) return (-1); |
| 36 | |
| 37 | if (lockf(fd, ltype & ll_unlock ? F_ULOCK: |
| 38 | ltype & ll_wait ? F_LOCK:F_TLOCK, len)) |
| 39 | { |
| 40 | lseek(fd, p, SEEK_SET); |
| 41 | return (-1); |
| 42 | } |
| 43 | lseek(fd, SEEK_SET, p); |
| 44 | return (0); |
| 45 | } |
HCoop / hcoop / debian / courier-authlib.git / blame