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-rw-r--r--sysklogd/syslogd.c30
1 files changed, 16 insertions, 14 deletions
diff --git a/sysklogd/syslogd.c b/sysklogd/syslogd.c
index a6a4ff25c..f75851085 100644
--- a/sysklogd/syslogd.c
+++ b/sysklogd/syslogd.c
@@ -648,22 +648,24 @@ static void log_locally(time_t now, char *msg, logFile_t *log_file)
648 } 648 }
649 /* newFile == "f.0" now */ 649 /* newFile == "f.0" now */
650 rename(log_file->path, newFile); 650 rename(log_file->path, newFile);
651 /* Incredibly, if F and F.0 are hardlinks, POSIX 651 }
652 * _demands_ that rename returns 0 but does not 652
653 * remove F!!! 653 /* We may or may not have just renamed the file away;
654 * (hardlinked F/F.0 pair was observed after 654 * if we didn't rename because we aren't keeping any backlog,
655 * power failure during rename()). 655 * then it's time to clobber the file. If we did rename it...,
656 * Ensure old file is gone: 656 * incredibly, if F and F.0 are hardlinks, POSIX _demands_
657 */ 657 * that rename returns 0 but does not remove F!!!
658 unlink(log_file->path); 658 * (hardlinked F/F.0 pair was observed after
659 * power failure during rename()).
660 * So ensure old file is gone in any case:
661 */
662 unlink(log_file->path);
659#ifdef SYSLOGD_WRLOCK 663#ifdef SYSLOGD_WRLOCK
660 fl.l_type = F_UNLCK; 664 fl.l_type = F_UNLCK;
661 fcntl(log_file->fd, F_SETLKW, &fl); 665 fcntl(log_file->fd, F_SETLKW, &fl);
662#endif 666#endif
663 close(log_file->fd); 667 close(log_file->fd);
664 goto reopen; 668 goto reopen;
665 }
666 ftruncate(log_file->fd, 0);
667 } 669 }
668 log_file->size += 670 log_file->size +=
669#endif 671#endif