From aa7df7b7379cc437515774d0ea91fb106aba5dc8 Mon Sep 17 00:00:00 2001 From: Björn Jacke Date: Wed, 15 Sep 2010 18:23:50 +0200 Subject: s3/printing: make clock jump save and use monotonic time for cache timeout --- source3/printing/pcap.c | 2 +- source3/printing/printer_list.c | 27 ++++++++++++++------------- 2 files changed, 15 insertions(+), 14 deletions(-) (limited to 'source3') diff --git a/source3/printing/pcap.c b/source3/printing/pcap.c index 3bc8e9e4e2..1b8f46d8e7 100644 --- a/source3/printing/pcap.c +++ b/source3/printing/pcap.c @@ -82,7 +82,7 @@ void pcap_cache_destroy_specific(struct pcap_cache **pp_cache) bool pcap_cache_add(const char *name, const char *comment) { NTSTATUS status; - time_t t = time(NULL); + time_t t = time_mono(NULL); status = printer_list_set_printer(talloc_tos(), name, comment, t); return NT_STATUS_IS_OK(status); diff --git a/source3/printing/printer_list.c b/source3/printing/printer_list.c index 6392755cf5..d02ab88663 100644 --- a/source3/printing/printer_list.c +++ b/source3/printing/printer_list.c @@ -218,27 +218,28 @@ done: bool printer_list_need_refresh(void) { NTSTATUS status; - time_t now = time(NULL); + time_t now = time_mono(NULL); time_t last_refresh; + int timediff; status = printer_list_get_last_refresh(&last_refresh); if (!NT_STATUS_IS_OK(status)) { return true; } + timediff = now - last_refresh; - if (now > last_refresh) { - /* if refresh occurred last than 1 seconds ago, - * then we probably don't need to refresh */ - if ((now - last_refresh) < 1) { - return false; - } - } else { - /* last_refresh newer than now, wow, someone just updated the - * cache under our nose, do not do again. */ - return false; + if (timediff > 1 ) { + /* if refresh occurred more than 1s (TODO:use lp_printcap_cache_time) ago, + * then we need to refresh */ + return true; + } else if (timediff < 0) { + /* last_refresh newer than now. Seems we have no monotonic + * clock and the clock was adjusted backwards. + * we need to refresh which also resets last_refresh */ + return true; } - return true; + return false; } NTSTATUS printer_list_mark_reload(void) @@ -246,7 +247,7 @@ NTSTATUS printer_list_mark_reload(void) struct db_context *db; TDB_DATA data; uint32_t time_h, time_l; - time_t now = time(NULL); + time_t now = time_mono(NULL); NTSTATUS status; int len; -- cgit