diff options
Diffstat (limited to 'mbbsd/record.c')
| -rw-r--r-- | mbbsd/record.c | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/mbbsd/record.c b/mbbsd/record.c index 55f78787..491af517 100644 --- a/mbbsd/record.c +++ b/mbbsd/record.c @@ -56,11 +56,27 @@ get_sum_records(char *fpath, int size) } int +get_record_keep(char *fpath, void *rptr, int size, int id, int *fd) +{ + /* 和 get_record() 一樣. 不過藉由 *fd, 可使同一個檔案不要一直重複開關 */ + if (id >= 1 && + (*fd > 0 || + ((*fd = open(fpath, O_RDONLY, 0)) > 0))){ + if (lseek(*fd, (off_t) (size * (id - 1)), SEEK_SET) != -1) { + if (read(*fd, rptr, size) == size) { + return 0; + } + } + } + return -1; +} + +int get_record(char *fpath, void *rptr, int size, int id) { int fd = -1; - if (id < 1 || (fd = open(fpath, O_RDONLY, 0)) != -1) { + if (id >= 1 && (fd = open(fpath, O_RDONLY, 0)) != -1) { if (lseek(fd, (off_t) (size * (id - 1)), SEEK_SET) != -1) { if (read(fd, rptr, size) == size) { close(fd); |