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y2038: syscalls: rename y2038 compat syscalls

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A lot of system calls that pass a time_t somewhere have an implementation
using a COMPAT_SYSCALL_DEFINEx() on 64-bit architectures, and have
been reworked so that this implementation can now be used on 32-bit
architectures as well.

The missing step is to redefine them using the regular SYSCALL_DEFINEx()
to get them out of the compat namespace and make it possible to build them
on 32-bit architectures.

Any system call that ends in 'time' gets a '32' suffix on its name for
that version, while the others get a '_time32' suffix, to distinguish
them from the normal version, which takes a 64-bit time argument in the
future.

In this step, only 64-bit architectures are changed, doing this rename
first lets us avoid touching the 32-bit architectures twice.

Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Arnd Bergmann
2019-01-07 00:33:08 +01:00
parent 7948450d45
commit 8dabe7245b
26 changed files with 361 additions and 367 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
kernel/time/hrtimer.c
View File

@@ -1771,7 +1771,7 @@ SYSCALL_DEFINE2(nanosleep, struct __kernel_timespec __user *, rqtp,
#ifdef CONFIG_COMPAT_32BIT_TIME
COMPAT_SYSCALL_DEFINE2(nanosleep, struct old_timespec32 __user *, rqtp,
SYSCALL_DEFINE2(nanosleep_time32, struct old_timespec32 __user *, rqtp,
struct old_timespec32 __user *, rmtp)
{
struct timespec64 tu;

25
kernel/time/posix-stubs.c
View File

@@ -45,6 +45,7 @@ SYS_NI(timer_delete);
SYS_NI(clock_adjtime);
SYS_NI(getitimer);
SYS_NI(setitimer);
SYS_NI(clock_adjtime32);
#ifdef __ARCH_WANT_SYS_ALARM
SYS_NI(alarm);
#endif
@@ -150,16 +151,16 @@ SYSCALL_DEFINE4(clock_nanosleep, const clockid_t, which_clock, int, flags,
#ifdef CONFIG_COMPAT
COMPAT_SYS_NI(timer_create);
COMPAT_SYS_NI(clock_adjtime);
COMPAT_SYS_NI(timer_settime);
COMPAT_SYS_NI(timer_gettime);
COMPAT_SYS_NI(getitimer);
COMPAT_SYS_NI(setitimer);
#endif
#ifdef CONFIG_COMPAT_32BIT_TIME
COMPAT_SYSCALL_DEFINE2(clock_settime, const clockid_t, which_clock,
struct old_timespec32 __user *, tp)
SYS_NI(timer_settime32);
SYS_NI(timer_gettime32);
SYSCALL_DEFINE2(clock_settime32, const clockid_t, which_clock,
struct old_timespec32 __user *, tp)
{
struct timespec64 new_tp;
@@ -171,8 +172,8 @@ COMPAT_SYSCALL_DEFINE2(clock_settime, const clockid_t, which_clock,
return do_sys_settimeofday64(&new_tp, NULL);
}
COMPAT_SYSCALL_DEFINE2(clock_gettime, clockid_t, which_clock,
struct old_timespec32 __user *, tp)
SYSCALL_DEFINE2(clock_gettime32, clockid_t, which_clock,
struct old_timespec32 __user *, tp)
{
int ret;
struct timespec64 kernel_tp;
@@ -186,8 +187,8 @@ COMPAT_SYSCALL_DEFINE2(clock_gettime, clockid_t, which_clock,
return 0;
}
COMPAT_SYSCALL_DEFINE2(clock_getres, clockid_t, which_clock,
struct old_timespec32 __user *, tp)
SYSCALL_DEFINE2(clock_getres_time32, clockid_t, which_clock,
struct old_timespec32 __user *, tp)
{
struct timespec64 rtn_tp = {
.tv_sec = 0,
@@ -206,9 +207,9 @@ COMPAT_SYSCALL_DEFINE2(clock_getres, clockid_t, which_clock,
}
}
COMPAT_SYSCALL_DEFINE4(clock_nanosleep, clockid_t, which_clock, int, flags,
struct old_timespec32 __user *, rqtp,
struct old_timespec32 __user *, rmtp)
SYSCALL_DEFINE4(clock_nanosleep_time32, clockid_t, which_clock, int, flags,
struct old_timespec32 __user *, rqtp,
struct old_timespec32 __user *, rmtp)
{
struct timespec64 t;

32
kernel/time/posix-timers.c
View File

@@ -730,8 +730,8 @@ SYSCALL_DEFINE2(timer_gettime, timer_t, timer_id,
#ifdef CONFIG_COMPAT_32BIT_TIME
COMPAT_SYSCALL_DEFINE2(timer_gettime, timer_t, timer_id,
struct old_itimerspec32 __user *, setting)
SYSCALL_DEFINE2(timer_gettime32, timer_t, timer_id,
struct old_itimerspec32 __user *, setting)
{
struct itimerspec64 cur_setting;
@@ -903,9 +903,9 @@ SYSCALL_DEFINE4(timer_settime, timer_t, timer_id, int, flags,
}
#ifdef CONFIG_COMPAT_32BIT_TIME
COMPAT_SYSCALL_DEFINE4(timer_settime, timer_t, timer_id, int, flags,
struct old_itimerspec32 __user *, new,
struct old_itimerspec32 __user *, old)
SYSCALL_DEFINE4(timer_settime32, timer_t, timer_id, int, flags,
struct old_itimerspec32 __user *, new,
struct old_itimerspec32 __user *, old)
{
struct itimerspec64 new_spec, old_spec;
struct itimerspec64 *rtn = old ? &old_spec : NULL;
@@ -1096,8 +1096,8 @@ SYSCALL_DEFINE2(clock_getres, const clockid_t, which_clock,
#ifdef CONFIG_COMPAT_32BIT_TIME
COMPAT_SYSCALL_DEFINE2(clock_settime, clockid_t, which_clock,
struct old_timespec32 __user *, tp)
SYSCALL_DEFINE2(clock_settime32, clockid_t, which_clock,
struct old_timespec32 __user *, tp)
{
const struct k_clock *kc = clockid_to_kclock(which_clock);
struct timespec64 ts;
@@ -1111,8 +1111,8 @@ COMPAT_SYSCALL_DEFINE2(clock_settime, clockid_t, which_clock,
return kc->clock_set(which_clock, &ts);
}
COMPAT_SYSCALL_DEFINE2(clock_gettime, clockid_t, which_clock,
struct old_timespec32 __user *, tp)
SYSCALL_DEFINE2(clock_gettime32, clockid_t, which_clock,
struct old_timespec32 __user *, tp)
{
const struct k_clock *kc = clockid_to_kclock(which_clock);
struct timespec64 ts;
@@ -1129,8 +1129,8 @@ COMPAT_SYSCALL_DEFINE2(clock_gettime, clockid_t, which_clock,
return err;
}
COMPAT_SYSCALL_DEFINE2(clock_adjtime, clockid_t, which_clock,
struct old_timex32 __user *, utp)
SYSCALL_DEFINE2(clock_adjtime32, clockid_t, which_clock,
struct old_timex32 __user *, utp)
{
struct __kernel_timex ktx;
int err;
@@ -1147,8 +1147,8 @@ COMPAT_SYSCALL_DEFINE2(clock_adjtime, clockid_t, which_clock,
return err;
}
COMPAT_SYSCALL_DEFINE2(clock_getres, clockid_t, which_clock,
struct old_timespec32 __user *, tp)
SYSCALL_DEFINE2(clock_getres_time32, clockid_t, which_clock,
struct old_timespec32 __user *, tp)
{
const struct k_clock *kc = clockid_to_kclock(which_clock);
struct timespec64 ts;
@@ -1204,9 +1204,9 @@ SYSCALL_DEFINE4(clock_nanosleep, const clockid_t, which_clock, int, flags,
#ifdef CONFIG_COMPAT_32BIT_TIME
COMPAT_SYSCALL_DEFINE4(clock_nanosleep, clockid_t, which_clock, int, flags,
struct old_timespec32 __user *, rqtp,
struct old_timespec32 __user *, rmtp)
SYSCALL_DEFINE4(clock_nanosleep_time32, clockid_t, which_clock, int, flags,
struct old_timespec32 __user *, rqtp,
struct old_timespec32 __user *, rmtp)
{
const struct k_clock *kc = clockid_to_kclock(which_clock);
struct timespec64 t;

8
kernel/time/time.c
View File

@@ -98,11 +98,11 @@ SYSCALL_DEFINE1(stime, time_t __user *, tptr)
#endif /* __ARCH_WANT_SYS_TIME */
#ifdef CONFIG_COMPAT
#ifdef CONFIG_COMPAT_32BIT_TIME
#ifdef __ARCH_WANT_COMPAT_SYS_TIME
/* old_time32_t is a 32 bit "long" and needs to get converted. */
COMPAT_SYSCALL_DEFINE1(time, old_time32_t __user *, tloc)
SYSCALL_DEFINE1(time32, old_time32_t __user *, tloc)
{
old_time32_t i;
@@ -116,7 +116,7 @@ COMPAT_SYSCALL_DEFINE1(time, old_time32_t __user *, tloc)
return i;
}
COMPAT_SYSCALL_DEFINE1(stime, old_time32_t __user *, tptr)
SYSCALL_DEFINE1(stime32, old_time32_t __user *, tptr)
{
struct timespec64 tv;
int err;
@@ -344,7 +344,7 @@ int put_old_timex32(struct old_timex32 __user *utp, const struct __kernel_timex
return 0;
}
COMPAT_SYSCALL_DEFINE1(adjtimex, struct old_timex32 __user *, utp)
SYSCALL_DEFINE1(adjtimex_time32, struct old_timex32 __user *, utp)
{
struct __kernel_timex txc;
int err, ret;