diff options
| author | David Brownell <david-b@pacbell.net> | 2006-10-01 10:28:16 +0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-10-01 11:39:25 +0400 |
| commit | db621f174d2c017d960089ea8cbc91c0763f1069 (patch) | |
| tree | 68a6ab944fdd30b2e6a7a0fb5a06629a4f4a6af9 /drivers/rtc | |
| parent | 818a8674b0388d90e33a5d1b13946b40dda7032a (diff) | |
| download | linux-db621f174d2c017d960089ea8cbc91c0763f1069.tar.xz | |
[PATCH] RTC class: error checks
The rtc_is_valid_tm() routine needs to treat some of the fields it checks as
unsigned, to prevent wrongly accepting invalid rtc_time structs; this is the
same approach used elsewhere in the RTC code for such tests.
Conversely, rtc_proc_show() is missing one invalid-day-of-month test that
rtc_is_valid_tm() makes: there is no day zero.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/rtc')
| -rw-r--r-- | drivers/rtc/rtc-lib.c | 8 | ||||
| -rw-r--r-- | drivers/rtc/rtc-proc.c | 2 |
2 files changed, 5 insertions, 5 deletions
diff --git a/drivers/rtc/rtc-lib.c b/drivers/rtc/rtc-lib.c index 9812120f3a7c..ba795a4db1e9 100644 --- a/drivers/rtc/rtc-lib.c +++ b/drivers/rtc/rtc-lib.c @@ -94,12 +94,12 @@ EXPORT_SYMBOL(rtc_time_to_tm); int rtc_valid_tm(struct rtc_time *tm) { if (tm->tm_year < 70 - || tm->tm_mon >= 12 + || ((unsigned)tm->tm_mon) >= 12 || tm->tm_mday < 1 || tm->tm_mday > rtc_month_days(tm->tm_mon, tm->tm_year + 1900) - || tm->tm_hour >= 24 - || tm->tm_min >= 60 - || tm->tm_sec >= 60) + || ((unsigned)tm->tm_hour) >= 24 + || ((unsigned)tm->tm_min) >= 60 + || ((unsigned)tm->tm_sec) >= 60) return -EINVAL; return 0; diff --git a/drivers/rtc/rtc-proc.c b/drivers/rtc/rtc-proc.c index 1b2c2caa2a99..2943d83edfd1 100644 --- a/drivers/rtc/rtc-proc.c +++ b/drivers/rtc/rtc-proc.c @@ -61,7 +61,7 @@ static int rtc_proc_show(struct seq_file *seq, void *offset) seq_printf(seq, "%02d-", alrm.time.tm_mon + 1); else seq_printf(seq, "**-"); - if ((unsigned int)alrm.time.tm_mday <= 31) + if (alrm.time.tm_mday && (unsigned int)alrm.time.tm_mday <= 31) seq_printf(seq, "%02d\n", alrm.time.tm_mday); else seq_printf(seq, "**\n"); |