lib/glibc
1
0
Fork 0
mirror of https://sourceware.org/git/glibc.git synced 2025-12-24 17:51:17 +03:00
Code Activity

Define in_int32_t_range to check if the 64 bit time_t syscall should be used

Browse Source 
Currently glibc uses in_time_t_range to detects time_t overflow,
and if it occurs fallbacks to 64 bit syscall version.

The function name is confusing because internally time_t might be
either 32 bits or 64 bits (depending on __TIMESIZE).

This patch refactors the in_time_t_range by replacing it with
in_int32_t_range for the case to check if the 64 bit time_t syscall
should be used.

The in_time_t range is used to detect overflow of the
syscall return value.

Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>
This commit is contained in:
YunQiang Su
2022-11-08 12:49:46 +08:00
committed by Adhemerval Zanella
parent 94628de778
commit a9acb7b39e
18 changed files with 31 additions and 23 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
sysdeps/unix/sysv/linux/timerfd_settime.c
View File

@@ -33,8 +33,8 @@ __timerfd_settime64 (int fd, int flags, const struct __itimerspec64 *value,
#ifdef __ASSUME_TIME64_SYSCALLS
return INLINE_SYSCALL_CALL (timerfd_settime64, fd, flags, value, ovalue);
#else
bool need_time64 = !in_time_t_range (value->it_value.tv_sec)
|| !in_time_t_range (value->it_interval.tv_sec);
bool need_time64 = !in_int32_t_range (value->it_value.tv_sec)
|| !in_int32_t_range (value->it_interval.tv_sec);
if (need_time64)
{
int r = INLINE_SYSCALL_CALL (timerfd_settime64, fd, flags, value,