linuxmsm/laptops-kernel
0
0
Fork 0
mirror of https://github.com/linux-msm/laptops-kernel.git synced 2026-08-13 14:19:53 -07:00
Code Issues Packages Projects Releases Wiki Activity

ARM: VDSO: Respect COMPAT_32BIT_TIME

Browse Source 
If CONFIG_COMPAT_32BIT_TIME is disabled then the vDSO should not
provide any 32-bit time related functionality. This is the intended
effect of the kconfig option and also the fallback system calls would
also not be implemented.

Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@oss.qualcomm.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Link: https://patch.msgid.link/20260702-vdso-compat_32bit_time-v3-5-db9f36d8d432@linutronix.de
This commit is contained in:
Thomas Weißschuh
2026-07-07 23:52:53 +02:00
committed by Thomas Gleixner
parent abb1537388
commit 95216f4647
2 changed files with 10 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files
arch/arm/vdso/vdso.lds.S
+2
View File
@@ -70,9 +70,11 @@ VERSION
{ {
LINUX_2.6 { LINUX_2.6 {
global: global:
#ifdef CONFIG_COMPAT_32BIT_TIME
__vdso_clock_gettime; __vdso_clock_gettime;
__vdso_gettimeofday; __vdso_gettimeofday;
__vdso_clock_getres; __vdso_clock_getres;
#endif /* CONFIG_COMPAT_32BIT_TIME */
__vdso_clock_gettime64; __vdso_clock_gettime64;
__vdso_clock_getres_time64; __vdso_clock_getres_time64;
local: *; local: *;
arch/arm/vdso/vgettimeofday.c
+8 -6
View File
@@ -10,16 +10,17 @@
#include <asm/unwind.h> #include <asm/unwind.h>
#include <vdso/gettime.h> #include <vdso/gettime.h>
#ifdef CONFIG_COMPAT_32BIT_TIME
int __vdso_clock_gettime(clockid_t clock, int __vdso_clock_gettime(clockid_t clock,
struct old_timespec32 *ts) struct old_timespec32 *ts)
{ {
return __cvdso_clock_gettime32(clock, ts); return __cvdso_clock_gettime32(clock, ts);
} }
int __vdso_clock_gettime64(clockid_t clock, int __vdso_clock_getres(clockid_t clock_id,
struct __kernel_timespec *ts) struct old_timespec32 *res)
{ {
return __cvdso_clock_gettime(clock, ts); return __cvdso_clock_getres_time32(clock_id, res);
} }
int __vdso_gettimeofday(struct __kernel_old_timeval *tv, int __vdso_gettimeofday(struct __kernel_old_timeval *tv,
@@ -27,11 +28,12 @@ int __vdso_gettimeofday(struct __kernel_old_timeval *tv,
{ {
return __cvdso_gettimeofday(tv, tz); return __cvdso_gettimeofday(tv, tz);
} }
#endif /* CONFIG_COMPAT_32BIT_TIME */
int __vdso_clock_getres(clockid_t clock_id, int __vdso_clock_gettime64(clockid_t clock,
struct old_timespec32 *res) struct __kernel_timespec *ts)
{ {
return __cvdso_clock_getres_time32(clock_id, res); return __cvdso_clock_gettime(clock, ts);
} }
int __vdso_clock_getres_time64(clockid_t clock_id, struct __kernel_timespec *res) int __vdso_clock_getres_time64(clockid_t clock_id, struct __kernel_timespec *res)