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| author | victor <victor@63ad8ddf-47c3-0310-b6dd-a9e9d9715204> | 2003-02-27 18:48:41 +0800 |
|---|---|---|
| committer | victor <victor@63ad8ddf-47c3-0310-b6dd-a9e9d9715204> | 2003-02-27 18:48:41 +0800 |
| commit | 4de1839d301e2cc87ce30121637132a5f5a47791 (patch) | |
| tree | b5b6c2d928d66e8f8cc7167b018f29c514ace3b9 | |
| parent | f7b66a549e691e5195eaeac9c15c88b6ca5beab3 (diff) | |
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check lock when get_record
git-svn-id: http://opensvn.csie.org/pttbbs/pttbbs/trunk/pttbbs@680 63ad8ddf-47c3-0310-b6dd-a9e9d9715204
| -rw-r--r-- | mbbsd/record.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/mbbsd/record.c b/mbbsd/record.c index cc82cde8..61f58dbc 100644 --- a/mbbsd/record.c +++ b/mbbsd/record.c @@ -1,4 +1,4 @@ -/* $Id: record.c,v 1.12 2002/12/31 17:40:51 in2 Exp $ */ +/* $Id: record.c,v 1.13 2003/02/27 10:48:41 victor Exp $ */ #include "bbs.h" #undef HAVE_MMAP @@ -78,6 +78,11 @@ get_records(char *fpath, void *rptr, int size, int id, int number) if (id < 1 || (fd = open(fpath, O_RDONLY, 0)) == -1) return -1; + if( flock(fd, LOCK_EX) < 0 ){ + close(fd); + return -1; + } + if (lseek(fd, (off_t) (size * (id - 1)), SEEK_SET) == -1) { close(fd); return 0; |