diff options
Diffstat (limited to 'busybox/coreutils/tail.c')
| -rw-r--r-- | busybox/coreutils/tail.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/busybox/coreutils/tail.c b/busybox/coreutils/tail.c index e3f89d2..1db1e2b 100644 --- a/busybox/coreutils/tail.c +++ b/busybox/coreutils/tail.c @@ -79,7 +79,13 @@ static void tail_xbb_full_write(const char *buf, size_t len) static ssize_t tail_read(int fd, char *buf, size_t count) { ssize_t r; + off_t current,end; + struct stat sbuf; + end = current = lseek(fd, 0, SEEK_CUR); + if (!fstat(fd, &sbuf)) + end = sbuf.st_size; + lseek(fd, end < current ? 0 : current, SEEK_SET); if ((r = safe_read(fd, buf, count)) < 0) { bb_perror_msg("read"); status = EXIT_FAILURE; |