From 192a82f9003fe8fabd6088aa646e829225a94c55 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Wed, 7 Jun 2017 09:42:28 +0100 Subject: hrtimer_nanosleep(): Pass rmtp in restart_block Store the pointer to the timespec which gets updated with the remaining time in the restart block and remove the function argument. [ tglx: Added changelog ] Signed-off-by: Al Viro Signed-off-by: Thomas Gleixner Cc: John Stultz Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/20170607084241.28657-3-viro@ZenIV.linux.org.uk --- kernel/compat.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'kernel/compat.c') diff --git a/kernel/compat.c b/kernel/compat.c index 933bcb31ae10..cc9ba9d29b47 100644 --- a/kernel/compat.c +++ b/kernel/compat.c @@ -253,9 +253,9 @@ COMPAT_SYSCALL_DEFINE2(nanosleep, struct compat_timespec __user *, rqtp, oldfs = get_fs(); set_fs(KERNEL_DS); - ret = hrtimer_nanosleep(&tu64, - rmtp ? (struct timespec __user *)&rmt : NULL, - HRTIMER_MODE_REL, CLOCK_MONOTONIC); + current->restart_block.nanosleep.rmtp = + rmtp ? (struct timespec __user *)&rmt : NULL; + ret = hrtimer_nanosleep(&tu64, HRTIMER_MODE_REL, CLOCK_MONOTONIC); set_fs(oldfs); /* -- cgit v1.2.3 From edbeda46322fbcb15af2d2d0f2daffb0cd349a5a Mon Sep 17 00:00:00 2001 From: Al Viro Date: Wed, 7 Jun 2017 09:42:31 +0100 Subject: time/posix-timers: Move the compat copyouts to the nanosleep implementations Turn restart_block.nanosleep.{rmtp,compat_rmtp} into a tagged union (kind = 1 -> native, kind = 2 -> compat, kind = 0 -> nothing) and make the places doing actual copyout handle compat as well as native (that will become a helper in the next commit). Result: compat wrappers, messing with reassignments, etc. are gone. [ tglx: Folded in a variant of Peter Zijlstras enum patch ] Signed-off-by: Al Viro Signed-off-by: Thomas Gleixner Cc: John Stultz Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/20170607084241.28657-6-viro@ZenIV.linux.org.uk --- kernel/compat.c | 131 -------------------------------------------------------- 1 file changed, 131 deletions(-) (limited to 'kernel/compat.c') diff --git a/kernel/compat.c b/kernel/compat.c index cc9ba9d29b47..23afa26f574b 100644 --- a/kernel/compat.c +++ b/kernel/compat.c @@ -213,82 +213,6 @@ int compat_convert_timespec(struct timespec __user **kts, return 0; } -static long compat_nanosleep_restart(struct restart_block *restart) -{ - struct compat_timespec __user *rmtp; - struct timespec rmt; - mm_segment_t oldfs; - long ret; - - restart->nanosleep.rmtp = (struct timespec __user *) &rmt; - oldfs = get_fs(); - set_fs(KERNEL_DS); - ret = hrtimer_nanosleep_restart(restart); - set_fs(oldfs); - - if (ret == -ERESTART_RESTARTBLOCK) { - rmtp = restart->nanosleep.compat_rmtp; - - if (rmtp && compat_put_timespec(&rmt, rmtp)) - return -EFAULT; - } - - return ret; -} - -COMPAT_SYSCALL_DEFINE2(nanosleep, struct compat_timespec __user *, rqtp, - struct compat_timespec __user *, rmtp) -{ - struct timespec tu, rmt; - struct timespec64 tu64; - mm_segment_t oldfs; - long ret; - - if (compat_get_timespec(&tu, rqtp)) - return -EFAULT; - - tu64 = timespec_to_timespec64(tu); - if (!timespec64_valid(&tu64)) - return -EINVAL; - - oldfs = get_fs(); - set_fs(KERNEL_DS); - current->restart_block.nanosleep.rmtp = - rmtp ? (struct timespec __user *)&rmt : NULL; - ret = hrtimer_nanosleep(&tu64, HRTIMER_MODE_REL, CLOCK_MONOTONIC); - set_fs(oldfs); - - /* - * hrtimer_nanosleep() can only return 0 or - * -ERESTART_RESTARTBLOCK here because: - * - * - we call it with HRTIMER_MODE_REL and therefor exclude the - * -ERESTARTNOHAND return path. - * - * - we supply the rmtp argument from the task stack (due to - * the necessary compat conversion. So the update cannot - * fail, which excludes the -EFAULT return path as well. If - * it fails nevertheless we have a bigger problem and wont - * reach this place anymore. - * - * - if the return value is 0, we do not have to update rmtp - * because there is no remaining time. - * - * We check for -ERESTART_RESTARTBLOCK nevertheless if the - * core implementation decides to return random nonsense. - */ - if (ret == -ERESTART_RESTARTBLOCK) { - struct restart_block *restart = ¤t->restart_block; - - restart->fn = compat_nanosleep_restart; - restart->nanosleep.compat_rmtp = rmtp; - - if (rmtp && compat_put_timespec(&rmt, rmtp)) - return -EFAULT; - } - return ret; -} - static inline long get_compat_itimerval(struct itimerval *o, struct compat_itimerval __user *i) { @@ -821,61 +745,6 @@ COMPAT_SYSCALL_DEFINE2(clock_getres, clockid_t, which_clock, return err; } -static long compat_clock_nanosleep_restart(struct restart_block *restart) -{ - long err; - mm_segment_t oldfs; - struct timespec tu; - struct compat_timespec __user *rmtp = restart->nanosleep.compat_rmtp; - - restart->nanosleep.rmtp = (struct timespec __user *) &tu; - oldfs = get_fs(); - set_fs(KERNEL_DS); - err = clock_nanosleep_restart(restart); - set_fs(oldfs); - - if ((err == -ERESTART_RESTARTBLOCK) && rmtp && - compat_put_timespec(&tu, rmtp)) - return -EFAULT; - - if (err == -ERESTART_RESTARTBLOCK) { - restart->fn = compat_clock_nanosleep_restart; - restart->nanosleep.compat_rmtp = rmtp; - } - return err; -} - -COMPAT_SYSCALL_DEFINE4(clock_nanosleep, clockid_t, which_clock, int, flags, - struct compat_timespec __user *, rqtp, - struct compat_timespec __user *, rmtp) -{ - long err; - mm_segment_t oldfs; - struct timespec in, out; - struct restart_block *restart; - - if (compat_get_timespec(&in, rqtp)) - return -EFAULT; - - oldfs = get_fs(); - set_fs(KERNEL_DS); - err = sys_clock_nanosleep(which_clock, flags, - (struct timespec __user *) &in, - (struct timespec __user *) &out); - set_fs(oldfs); - - if ((err == -ERESTART_RESTARTBLOCK) && rmtp && - compat_put_timespec(&out, rmtp)) - return -EFAULT; - - if (err == -ERESTART_RESTARTBLOCK) { - restart = ¤t->restart_block; - restart->fn = compat_clock_nanosleep_restart; - restart->nanosleep.compat_rmtp = rmtp; - } - return err; -} - /* * We currently only need the following fields from the sigevent * structure: sigev_value, sigev_signo, sig_notify and (sometimes -- cgit v1.2.3 From 3a4d44b6162555070194e486ff6b3799a8d323a2 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Wed, 7 Jun 2017 09:42:34 +0100 Subject: ntp: Move adjtimex related compat syscalls to native counterparts Get rid of set_fs() mess and sanitize compat_{get,put}_timex(), while we are at it. Signed-off-by: Al Viro Signed-off-by: Thomas Gleixner Cc: John Stultz Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/20170607084241.28657-9-viro@ZenIV.linux.org.uk --- kernel/compat.c | 141 +++++++++++++++++++++----------------------------------- 1 file changed, 52 insertions(+), 89 deletions(-) (limited to 'kernel/compat.c') diff --git a/kernel/compat.c b/kernel/compat.c index 23afa26f574b..97087b333543 100644 --- a/kernel/compat.c +++ b/kernel/compat.c @@ -30,60 +30,64 @@ #include -static int compat_get_timex(struct timex *txc, struct compat_timex __user *utp) +int compat_get_timex(struct timex *txc, const struct compat_timex __user *utp) { - memset(txc, 0, sizeof(struct timex)); - - if (!access_ok(VERIFY_READ, utp, sizeof(struct compat_timex)) || - __get_user(txc->modes, &utp->modes) || - __get_user(txc->offset, &utp->offset) || - __get_user(txc->freq, &utp->freq) || - __get_user(txc->maxerror, &utp->maxerror) || - __get_user(txc->esterror, &utp->esterror) || - __get_user(txc->status, &utp->status) || - __get_user(txc->constant, &utp->constant) || - __get_user(txc->precision, &utp->precision) || - __get_user(txc->tolerance, &utp->tolerance) || - __get_user(txc->time.tv_sec, &utp->time.tv_sec) || - __get_user(txc->time.tv_usec, &utp->time.tv_usec) || - __get_user(txc->tick, &utp->tick) || - __get_user(txc->ppsfreq, &utp->ppsfreq) || - __get_user(txc->jitter, &utp->jitter) || - __get_user(txc->shift, &utp->shift) || - __get_user(txc->stabil, &utp->stabil) || - __get_user(txc->jitcnt, &utp->jitcnt) || - __get_user(txc->calcnt, &utp->calcnt) || - __get_user(txc->errcnt, &utp->errcnt) || - __get_user(txc->stbcnt, &utp->stbcnt)) + struct compat_timex tx32; + + if (copy_from_user(&tx32, utp, sizeof(struct compat_timex))) return -EFAULT; + txc->modes = tx32.modes; + txc->offset = tx32.offset; + txc->freq = tx32.freq; + txc->maxerror = tx32.maxerror; + txc->esterror = tx32.esterror; + txc->status = tx32.status; + txc->constant = tx32.constant; + txc->precision = tx32.precision; + txc->tolerance = tx32.tolerance; + txc->time.tv_sec = tx32.time.tv_sec; + txc->time.tv_usec = tx32.time.tv_usec; + txc->tick = tx32.tick; + txc->ppsfreq = tx32.ppsfreq; + txc->jitter = tx32.jitter; + txc->shift = tx32.shift; + txc->stabil = tx32.stabil; + txc->jitcnt = tx32.jitcnt; + txc->calcnt = tx32.calcnt; + txc->errcnt = tx32.errcnt; + txc->stbcnt = tx32.stbcnt; + return 0; } -static int compat_put_timex(struct compat_timex __user *utp, struct timex *txc) -{ - if (!access_ok(VERIFY_WRITE, utp, sizeof(struct compat_timex)) || - __put_user(txc->modes, &utp->modes) || - __put_user(txc->offset, &utp->offset) || - __put_user(txc->freq, &utp->freq) || - __put_user(txc->maxerror, &utp->maxerror) || - __put_user(txc->esterror, &utp->esterror) || - __put_user(txc->status, &utp->status) || - __put_user(txc->constant, &utp->constant) || - __put_user(txc->precision, &utp->precision) || - __put_user(txc->tolerance, &utp->tolerance) || - __put_user(txc->time.tv_sec, &utp->time.tv_sec) || - __put_user(txc->time.tv_usec, &utp->time.tv_usec) || - __put_user(txc->tick, &utp->tick) || - __put_user(txc->ppsfreq, &utp->ppsfreq) || - __put_user(txc->jitter, &utp->jitter) || - __put_user(txc->shift, &utp->shift) || - __put_user(txc->stabil, &utp->stabil) || - __put_user(txc->jitcnt, &utp->jitcnt) || - __put_user(txc->calcnt, &utp->calcnt) || - __put_user(txc->errcnt, &utp->errcnt) || - __put_user(txc->stbcnt, &utp->stbcnt) || - __put_user(txc->tai, &utp->tai)) +int compat_put_timex(struct compat_timex __user *utp, const struct timex *txc) +{ + struct compat_timex tx32; + + memset(&tx32, 0, sizeof(struct compat_timex)); + tx32.modes = txc->modes; + tx32.offset = txc->offset; + tx32.freq = txc->freq; + tx32.maxerror = txc->maxerror; + tx32.esterror = txc->esterror; + tx32.status = txc->status; + tx32.constant = txc->constant; + tx32.precision = txc->precision; + tx32.tolerance = txc->tolerance; + tx32.time.tv_sec = txc->time.tv_sec; + tx32.time.tv_usec = txc->time.tv_usec; + tx32.tick = txc->tick; + tx32.ppsfreq = txc->ppsfreq; + tx32.jitter = txc->jitter; + tx32.shift = txc->shift; + tx32.stabil = txc->stabil; + tx32.jitcnt = txc->jitcnt; + tx32.calcnt = txc->calcnt; + tx32.errcnt = txc->errcnt; + tx32.stbcnt = txc->stbcnt; + tx32.tai = txc->tai; + if (copy_to_user(utp, &tx32, sizeof(struct compat_timex))) return -EFAULT; return 0; } @@ -705,29 +709,6 @@ COMPAT_SYSCALL_DEFINE2(clock_gettime, clockid_t, which_clock, return err; } -COMPAT_SYSCALL_DEFINE2(clock_adjtime, clockid_t, which_clock, - struct compat_timex __user *, utp) -{ - struct timex txc; - mm_segment_t oldfs; - int err, ret; - - err = compat_get_timex(&txc, utp); - if (err) - return err; - - oldfs = get_fs(); - set_fs(KERNEL_DS); - ret = sys_clock_adjtime(which_clock, (struct timex __user *) &txc); - set_fs(oldfs); - - err = compat_put_timex(utp, &txc); - if (err) - return err; - - return ret; -} - COMPAT_SYSCALL_DEFINE2(clock_getres, clockid_t, which_clock, struct compat_timespec __user *, tp) { @@ -944,24 +925,6 @@ COMPAT_SYSCALL_DEFINE1(stime, compat_time_t __user *, tptr) #endif /* __ARCH_WANT_COMPAT_SYS_TIME */ -COMPAT_SYSCALL_DEFINE1(adjtimex, struct compat_timex __user *, utp) -{ - struct timex txc; - int err, ret; - - err = compat_get_timex(&txc, utp); - if (err) - return err; - - ret = do_adjtimex(&txc); - - err = compat_put_timex(utp, &txc); - if (err) - return err; - - return ret; -} - #ifdef CONFIG_NUMA COMPAT_SYSCALL_DEFINE6(move_pages, pid_t, pid, compat_ulong_t, nr_pages, compat_uptr_t __user *, pages32, -- cgit v1.2.3 From 1acbe7708b0313b33287bb4ffcbf26462ea3c588 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Wed, 7 Jun 2017 09:42:35 +0100 Subject: posix-timers: Take compat timer_settime(2) to native one ... and get rid of set_fs() in there Signed-off-by: Al Viro Signed-off-by: Thomas Gleixner Cc: John Stultz Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/20170607084241.28657-10-viro@ZenIV.linux.org.uk --- kernel/compat.c | 23 ----------------------- 1 file changed, 23 deletions(-) (limited to 'kernel/compat.c') diff --git a/kernel/compat.c b/kernel/compat.c index 97087b333543..df39e2e00c47 100644 --- a/kernel/compat.c +++ b/kernel/compat.c @@ -635,29 +635,6 @@ COMPAT_SYSCALL_DEFINE3(timer_create, clockid_t, which_clock, return sys_timer_create(which_clock, event, created_timer_id); } -COMPAT_SYSCALL_DEFINE4(timer_settime, timer_t, timer_id, int, flags, - struct compat_itimerspec __user *, new, - struct compat_itimerspec __user *, old) -{ - long err; - mm_segment_t oldfs; - struct itimerspec newts, oldts; - - if (!new) - return -EINVAL; - if (get_compat_itimerspec(&newts, new)) - return -EFAULT; - oldfs = get_fs(); - set_fs(KERNEL_DS); - err = sys_timer_settime(timer_id, flags, - (struct itimerspec __user *) &newts, - (struct itimerspec __user *) &oldts); - set_fs(oldfs); - if (!err && old && put_compat_itimerspec(old, &oldts)) - return -EFAULT; - return err; -} - COMPAT_SYSCALL_DEFINE2(timer_gettime, timer_t, timer_id, struct compat_itimerspec __user *, setting) { -- cgit v1.2.3 From b0dc12426ec404de99d7e75a12a22d9201d90914 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Wed, 7 Jun 2017 09:42:36 +0100 Subject: posix-timers: Take compat timer_gettime(2) to native one ... and get rid of set_fs() in there Signed-off-by: Al Viro Signed-off-by: Thomas Gleixner Cc: John Stultz Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/20170607084241.28657-11-viro@ZenIV.linux.org.uk --- kernel/compat.c | 17 ----------------- 1 file changed, 17 deletions(-) (limited to 'kernel/compat.c') diff --git a/kernel/compat.c b/kernel/compat.c index df39e2e00c47..1fb8cf7e691e 100644 --- a/kernel/compat.c +++ b/kernel/compat.c @@ -635,23 +635,6 @@ COMPAT_SYSCALL_DEFINE3(timer_create, clockid_t, which_clock, return sys_timer_create(which_clock, event, created_timer_id); } -COMPAT_SYSCALL_DEFINE2(timer_gettime, timer_t, timer_id, - struct compat_itimerspec __user *, setting) -{ - long err; - mm_segment_t oldfs; - struct itimerspec ts; - - oldfs = get_fs(); - set_fs(KERNEL_DS); - err = sys_timer_gettime(timer_id, - (struct itimerspec __user *) &ts); - set_fs(oldfs); - if (!err && put_compat_itimerspec(setting, &ts)) - return -EFAULT; - return err; -} - COMPAT_SYSCALL_DEFINE2(clock_settime, clockid_t, which_clock, struct compat_timespec __user *, tp) { -- cgit v1.2.3 From 54ad9c46c262ce4a603dc7887e37956896a0211d Mon Sep 17 00:00:00 2001 From: Al Viro Date: Wed, 7 Jun 2017 09:42:37 +0100 Subject: itimers: Move compat itimer syscalls to native ones get rid of set_fs(), sanitize compat copyin/copyout. Signed-off-by: Al Viro Signed-off-by: Thomas Gleixner Cc: John Stultz Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/20170607084241.28657-12-viro@ZenIV.linux.org.uk --- kernel/compat.c | 69 +++++++++++++-------------------------------------------- 1 file changed, 16 insertions(+), 53 deletions(-) (limited to 'kernel/compat.c') diff --git a/kernel/compat.c b/kernel/compat.c index 1fb8cf7e691e..c349417d2c40 100644 --- a/kernel/compat.c +++ b/kernel/compat.c @@ -217,65 +217,28 @@ int compat_convert_timespec(struct timespec __user **kts, return 0; } -static inline long get_compat_itimerval(struct itimerval *o, - struct compat_itimerval __user *i) +int get_compat_itimerval(struct itimerval *o, const struct compat_itimerval __user *i) { - return (!access_ok(VERIFY_READ, i, sizeof(*i)) || - (__get_user(o->it_interval.tv_sec, &i->it_interval.tv_sec) | - __get_user(o->it_interval.tv_usec, &i->it_interval.tv_usec) | - __get_user(o->it_value.tv_sec, &i->it_value.tv_sec) | - __get_user(o->it_value.tv_usec, &i->it_value.tv_usec))); -} - -static inline long put_compat_itimerval(struct compat_itimerval __user *o, - struct itimerval *i) -{ - return (!access_ok(VERIFY_WRITE, o, sizeof(*o)) || - (__put_user(i->it_interval.tv_sec, &o->it_interval.tv_sec) | - __put_user(i->it_interval.tv_usec, &o->it_interval.tv_usec) | - __put_user(i->it_value.tv_sec, &o->it_value.tv_sec) | - __put_user(i->it_value.tv_usec, &o->it_value.tv_usec))); -} - -asmlinkage long sys_ni_posix_timers(void); - -COMPAT_SYSCALL_DEFINE2(getitimer, int, which, - struct compat_itimerval __user *, it) -{ - struct itimerval kit; - int error; - - if (!IS_ENABLED(CONFIG_POSIX_TIMERS)) - return sys_ni_posix_timers(); + struct compat_itimerval v32; - error = do_getitimer(which, &kit); - if (!error && put_compat_itimerval(it, &kit)) - error = -EFAULT; - return error; + if (copy_from_user(&v32, i, sizeof(struct compat_itimerval))) + return -EFAULT; + o->it_interval.tv_sec = v32.it_interval.tv_sec; + o->it_interval.tv_usec = v32.it_interval.tv_usec; + o->it_value.tv_sec = v32.it_value.tv_sec; + o->it_value.tv_usec = v32.it_value.tv_usec; + return 0; } -COMPAT_SYSCALL_DEFINE3(setitimer, int, which, - struct compat_itimerval __user *, in, - struct compat_itimerval __user *, out) +int put_compat_itimerval(struct compat_itimerval __user *o, const struct itimerval *i) { - struct itimerval kin, kout; - int error; + struct compat_itimerval v32; - if (!IS_ENABLED(CONFIG_POSIX_TIMERS)) - return sys_ni_posix_timers(); - - if (in) { - if (get_compat_itimerval(&kin, in)) - return -EFAULT; - } else - memset(&kin, 0, sizeof(kin)); - - error = do_setitimer(which, &kin, out ? &kout : NULL); - if (error || !out) - return error; - if (put_compat_itimerval(out, &kout)) - return -EFAULT; - return 0; + v32.it_interval.tv_sec = i->it_interval.tv_sec; + v32.it_interval.tv_usec = i->it_interval.tv_usec; + v32.it_value.tv_sec = i->it_value.tv_sec; + v32.it_value.tv_usec = i->it_value.tv_usec; + return copy_to_user(o, &v32, sizeof(struct compat_itimerval)) ? -EFAULT : 0; } static compat_clock_t clock_t_to_compat_clock_t(clock_t x) -- cgit v1.2.3 From d822cdcce43f9d4dcddbf9c68f9537d542ccc3c3 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Wed, 7 Jun 2017 09:42:38 +0100 Subject: posix-timers: Move compat versions of clock_gettime/settime/getres Move them to the native implementations and get rid of the set_fs() hackery. Signed-off-by: Al Viro Signed-off-by: Thomas Gleixner Cc: John Stultz Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/20170607084241.28657-13-viro@ZenIV.linux.org.uk --- kernel/compat.c | 51 --------------------------------------------------- 1 file changed, 51 deletions(-) (limited to 'kernel/compat.c') diff --git a/kernel/compat.c b/kernel/compat.c index c349417d2c40..582c38bfdf60 100644 --- a/kernel/compat.c +++ b/kernel/compat.c @@ -598,57 +598,6 @@ COMPAT_SYSCALL_DEFINE3(timer_create, clockid_t, which_clock, return sys_timer_create(which_clock, event, created_timer_id); } -COMPAT_SYSCALL_DEFINE2(clock_settime, clockid_t, which_clock, - struct compat_timespec __user *, tp) -{ - long err; - mm_segment_t oldfs; - struct timespec ts; - - if (compat_get_timespec(&ts, tp)) - return -EFAULT; - oldfs = get_fs(); - set_fs(KERNEL_DS); - err = sys_clock_settime(which_clock, - (struct timespec __user *) &ts); - set_fs(oldfs); - return err; -} - -COMPAT_SYSCALL_DEFINE2(clock_gettime, clockid_t, which_clock, - struct compat_timespec __user *, tp) -{ - long err; - mm_segment_t oldfs; - struct timespec ts; - - oldfs = get_fs(); - set_fs(KERNEL_DS); - err = sys_clock_gettime(which_clock, - (struct timespec __user *) &ts); - set_fs(oldfs); - if (!err && compat_put_timespec(&ts, tp)) - return -EFAULT; - return err; -} - -COMPAT_SYSCALL_DEFINE2(clock_getres, clockid_t, which_clock, - struct compat_timespec __user *, tp) -{ - long err; - mm_segment_t oldfs; - struct timespec ts; - - oldfs = get_fs(); - set_fs(KERNEL_DS); - err = sys_clock_getres(which_clock, - (struct timespec __user *) &ts); - set_fs(oldfs); - if (!err && tp && compat_put_timespec(&ts, tp)) - return -EFAULT; - return err; -} - /* * We currently only need the following fields from the sigevent * structure: sigev_value, sigev_signo, sig_notify and (sometimes -- cgit v1.2.3 From 2482097c6c0f01ad74c9b2cff120a519ac59846e Mon Sep 17 00:00:00 2001 From: Al Viro Date: Wed, 7 Jun 2017 09:42:39 +0100 Subject: posix-timers: Move compat_timer_create() to native, get rid of set_fs() Signed-off-by: Al Viro Signed-off-by: Thomas Gleixner Cc: John Stultz Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/20170607084241.28657-14-viro@ZenIV.linux.org.uk --- kernel/compat.c | 18 ------------------ 1 file changed, 18 deletions(-) (limited to 'kernel/compat.c') diff --git a/kernel/compat.c b/kernel/compat.c index 582c38bfdf60..4544eb63edfa 100644 --- a/kernel/compat.c +++ b/kernel/compat.c @@ -580,24 +580,6 @@ int put_compat_itimerspec(struct compat_itimerspec __user *dst, return 0; } -COMPAT_SYSCALL_DEFINE3(timer_create, clockid_t, which_clock, - struct compat_sigevent __user *, timer_event_spec, - timer_t __user *, created_timer_id) -{ - struct sigevent __user *event = NULL; - - if (timer_event_spec) { - struct sigevent kevent; - - event = compat_alloc_user_space(sizeof(*event)); - if (get_compat_sigevent(&kevent, timer_event_spec) || - copy_to_user(event, &kevent, sizeof(*event))) - return -EFAULT; - } - - return sys_timer_create(which_clock, event, created_timer_id); -} - /* * We currently only need the following fields from the sigevent * structure: sigev_value, sigev_signo, sig_notify and (sometimes -- cgit v1.2.3 From b180db2c8ca6692a10b79631cadc18d03303d494 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Wed, 7 Jun 2017 09:42:40 +0100 Subject: time: Move compat_time()/stime() to native Signed-off-by: Al Viro Signed-off-by: Thomas Gleixner Cc: John Stultz Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/20170607084241.28657-15-viro@ZenIV.linux.org.uk --- kernel/compat.c | 40 ---------------------------------------- 1 file changed, 40 deletions(-) (limited to 'kernel/compat.c') diff --git a/kernel/compat.c b/kernel/compat.c index 4544eb63edfa..aa7b9a27f9e7 100644 --- a/kernel/compat.c +++ b/kernel/compat.c @@ -739,46 +739,6 @@ COMPAT_SYSCALL_DEFINE4(rt_sigtimedwait, compat_sigset_t __user *, uthese, return ret; } -#ifdef __ARCH_WANT_COMPAT_SYS_TIME - -/* compat_time_t is a 32 bit "long" and needs to get converted. */ - -COMPAT_SYSCALL_DEFINE1(time, compat_time_t __user *, tloc) -{ - compat_time_t i; - struct timeval tv; - - do_gettimeofday(&tv); - i = tv.tv_sec; - - if (tloc) { - if (put_user(i,tloc)) - return -EFAULT; - } - force_successful_syscall_return(); - return i; -} - -COMPAT_SYSCALL_DEFINE1(stime, compat_time_t __user *, tptr) -{ - struct timespec tv; - int err; - - if (get_user(tv.tv_sec, tptr)) - return -EFAULT; - - tv.tv_nsec = 0; - - err = security_settime(&tv, NULL); - if (err) - return err; - - do_settimeofday(&tv); - return 0; -} - -#endif /* __ARCH_WANT_COMPAT_SYS_TIME */ - #ifdef CONFIG_NUMA COMPAT_SYSCALL_DEFINE6(move_pages, pid_t, pid, compat_ulong_t, nr_pages, compat_uptr_t __user *, pages32, -- cgit v1.2.3 From 2b2d02856b3176701c91d723356f766d6ee27853 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Wed, 7 Jun 2017 09:42:41 +0100 Subject: time: Move compat_gettimeofday()/settimeofday() to native Signed-off-by: Al Viro Signed-off-by: Thomas Gleixner Cc: John Stultz Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/20170607084241.28657-16-viro@ZenIV.linux.org.uk --- kernel/compat.c | 38 -------------------------------------- 1 file changed, 38 deletions(-) (limited to 'kernel/compat.c') diff --git a/kernel/compat.c b/kernel/compat.c index aa7b9a27f9e7..ebd8bdc3fd68 100644 --- a/kernel/compat.c +++ b/kernel/compat.c @@ -92,44 +92,6 @@ int compat_put_timex(struct compat_timex __user *utp, const struct timex *txc) return 0; } -COMPAT_SYSCALL_DEFINE2(gettimeofday, struct compat_timeval __user *, tv, - struct timezone __user *, tz) -{ - if (tv) { - struct timeval ktv; - do_gettimeofday(&ktv); - if (compat_put_timeval(&ktv, tv)) - return -EFAULT; - } - if (tz) { - if (copy_to_user(tz, &sys_tz, sizeof(sys_tz))) - return -EFAULT; - } - - return 0; -} - -COMPAT_SYSCALL_DEFINE2(settimeofday, struct compat_timeval __user *, tv, - struct timezone __user *, tz) -{ - struct timespec64 new_ts; - struct timeval user_tv; - struct timezone new_tz; - - if (tv) { - if (compat_get_timeval(&user_tv, tv)) - return -EFAULT; - new_ts.tv_sec = user_tv.tv_sec; - new_ts.tv_nsec = user_tv.tv_usec * NSEC_PER_USEC; - } - if (tz) { - if (copy_from_user(&new_tz, tz, sizeof(*tz))) - return -EFAULT; - } - - return do_sys_settimeofday64(tv ? &new_ts : NULL, tz ? &new_tz : NULL); -} - static int __compat_get_timeval(struct timeval *tv, const struct compat_timeval __user *ctv) { return (!access_ok(VERIFY_READ, ctv, sizeof(*ctv)) || -- cgit v1.2.3