| | 1 | /* |
| | 2 | ** Copyright 1998 - 1999 Double Precision, Inc. See COPYING for |
| | 3 | ** distribution information. |
| | 4 | */ |
| | 5 | |
| | 6 | /* $Id: locklockf.c,v 1.4 2002/09/02 16:55:56 mrsam Exp $ */ |
| | 7 | |
| | 8 | #if HAVE_CONFIG_H |
| | 9 | #include "config.h" |
| | 10 | #endif |
| | 11 | #include <sys/types.h> |
| | 12 | #if HAVE_FCNTL_H |
| | 13 | #include <fcntl.h> |
| | 14 | #endif |
| | 15 | #if HAVE_SYS_FCNTL_H |
| | 16 | #include <sys/fcntl.h> |
| | 17 | #endif |
| | 18 | #if HAVE_UNISTD_H |
| | 19 | #include <unistd.h> |
| | 20 | #endif |
| | 21 | #if HAVE_ERRNO_H |
| | 22 | #include <errno.h> |
| | 23 | #endif |
| | 24 | #include "liblock.h" |
| | 25 | |
| | 26 | int ll_lockfd(int fd, int ltype, LL_OFFSET_TYPE start, LL_OFFSET_TYPE len) |
| | 27 | { |
| | 28 | off_t p; |
| | 29 | |
| | 30 | if (ltype & ll_whence_curpos) |
| | 31 | p=lseek(fd, start, SEEK_CUR); |
| | 32 | else if (ltype && ll_whence_end) |
| | 33 | p=lseek(fd, start, SEEK_END); |
| | 34 | else p=lseek(fd, start, SEEK_SET); |
| | 35 | |
| | 36 | if (p < 0) return (-1); |
| | 37 | |
| | 38 | if (lockf(fd, ltype & ll_unlock ? F_ULOCK: |
| | 39 | ltype & ll_wait ? F_LOCK:F_TLOCK, len)) |
| | 40 | { |
| | 41 | lseek(fd, p, SEEK_SET); |
| | 42 | return (-1); |
| | 43 | } |
| | 44 | lseek(fd, SEEK_SET, p); |
| | 45 | return (0); |
| | 46 | } |
HCoop / hcoop / debian / courier-authlib.git / blame_incremental