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-rw-r--r--kernel/compat.c662
1 files changed, 335 insertions, 327 deletions
diff --git a/kernel/compat.c b/kernel/compat.c
index c9e2ec0b34a..633394f442f 100644
--- a/kernel/compat.c
+++ b/kernel/compat.c
@@ -21,6 +21,7 @@
#include <linux/unistd.h>
#include <linux/security.h>
#include <linux/timex.h>
+#include <linux/export.h>
#include <linux/migrate.h>
#include <linux/posix-timers.h>
#include <linux/times.h>
@@ -29,36 +30,71 @@
#include <asm/uaccess.h>
-/*
- * Note that the native side is already converted to a timespec, because
- * that's what we want anyway.
- */
-static int compat_get_timeval(struct timespec *o,
- struct compat_timeval __user *i)
+static int compat_get_timex(struct timex *txc, struct compat_timex __user *utp)
{
- long usec;
+ memset(txc, 0, sizeof(struct timex));
- if (get_user(o->tv_sec, &i->tv_sec) ||
- get_user(usec, &i->tv_usec))
+ 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))
return -EFAULT;
- o->tv_nsec = usec * 1000;
+
return 0;
}
-static int compat_put_timeval(struct compat_timeval __user *o,
- struct timeval *i)
+static int compat_put_timex(struct compat_timex __user *utp, struct timex *txc)
{
- return (put_user(i->tv_sec, &o->tv_sec) ||
- put_user(i->tv_usec, &o->tv_usec)) ? -EFAULT : 0;
+ 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))
+ return -EFAULT;
+ return 0;
}
-asmlinkage long compat_sys_gettimeofday(struct compat_timeval __user *tv,
- struct timezone __user *tz)
+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(tv, &ktv))
+ if (compat_put_timeval(&ktv, tv))
return -EFAULT;
}
if (tz) {
@@ -69,38 +105,114 @@ asmlinkage long compat_sys_gettimeofday(struct compat_timeval __user *tv,
return 0;
}
-asmlinkage long compat_sys_settimeofday(struct compat_timeval __user *tv,
- struct timezone __user *tz)
+COMPAT_SYSCALL_DEFINE2(settimeofday, struct compat_timeval __user *, tv,
+ struct timezone __user *, tz)
{
- struct timespec kts;
- struct timezone ktz;
+ struct timeval user_tv;
+ struct timespec new_ts;
+ struct timezone new_tz;
if (tv) {
- if (compat_get_timeval(&kts, 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(&ktz, tz, sizeof(ktz)))
+ if (copy_from_user(&new_tz, tz, sizeof(*tz)))
return -EFAULT;
}
- return do_sys_settimeofday(tv ? &kts : NULL, tz ? &ktz : NULL);
+ return do_sys_settimeofday(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)) ||
+ __get_user(tv->tv_sec, &ctv->tv_sec) ||
+ __get_user(tv->tv_usec, &ctv->tv_usec)) ? -EFAULT : 0;
}
-int get_compat_timespec(struct timespec *ts, const struct compat_timespec __user *cts)
+static int __compat_put_timeval(const struct timeval *tv, struct compat_timeval __user *ctv)
+{
+ return (!access_ok(VERIFY_WRITE, ctv, sizeof(*ctv)) ||
+ __put_user(tv->tv_sec, &ctv->tv_sec) ||
+ __put_user(tv->tv_usec, &ctv->tv_usec)) ? -EFAULT : 0;
+}
+
+static int __compat_get_timespec(struct timespec *ts, const struct compat_timespec __user *cts)
{
return (!access_ok(VERIFY_READ, cts, sizeof(*cts)) ||
__get_user(ts->tv_sec, &cts->tv_sec) ||
__get_user(ts->tv_nsec, &cts->tv_nsec)) ? -EFAULT : 0;
}
-int put_compat_timespec(const struct timespec *ts, struct compat_timespec __user *cts)
+static int __compat_put_timespec(const struct timespec *ts, struct compat_timespec __user *cts)
{
return (!access_ok(VERIFY_WRITE, cts, sizeof(*cts)) ||
__put_user(ts->tv_sec, &cts->tv_sec) ||
__put_user(ts->tv_nsec, &cts->tv_nsec)) ? -EFAULT : 0;
}
+int compat_get_timeval(struct timeval *tv, const void __user *utv)
+{
+ if (COMPAT_USE_64BIT_TIME)
+ return copy_from_user(tv, utv, sizeof(*tv)) ? -EFAULT : 0;
+ else
+ return __compat_get_timeval(tv, utv);
+}
+EXPORT_SYMBOL_GPL(compat_get_timeval);
+
+int compat_put_timeval(const struct timeval *tv, void __user *utv)
+{
+ if (COMPAT_USE_64BIT_TIME)
+ return copy_to_user(utv, tv, sizeof(*tv)) ? -EFAULT : 0;
+ else
+ return __compat_put_timeval(tv, utv);
+}
+EXPORT_SYMBOL_GPL(compat_put_timeval);
+
+int compat_get_timespec(struct timespec *ts, const void __user *uts)
+{
+ if (COMPAT_USE_64BIT_TIME)
+ return copy_from_user(ts, uts, sizeof(*ts)) ? -EFAULT : 0;
+ else
+ return __compat_get_timespec(ts, uts);
+}
+EXPORT_SYMBOL_GPL(compat_get_timespec);
+
+int compat_put_timespec(const struct timespec *ts, void __user *uts)
+{
+ if (COMPAT_USE_64BIT_TIME)
+ return copy_to_user(uts, ts, sizeof(*ts)) ? -EFAULT : 0;
+ else
+ return __compat_put_timespec(ts, uts);
+}
+EXPORT_SYMBOL_GPL(compat_put_timespec);
+
+int compat_convert_timespec(struct timespec __user **kts,
+ const void __user *cts)
+{
+ struct timespec ts;
+ struct timespec __user *uts;
+
+ if (!cts || COMPAT_USE_64BIT_TIME) {
+ *kts = (struct timespec __user *)cts;
+ return 0;
+ }
+
+ uts = compat_alloc_user_space(sizeof(ts));
+ if (!uts)
+ return -EFAULT;
+ if (compat_get_timespec(&ts, cts))
+ return -EFAULT;
+ if (copy_to_user(uts, &ts, sizeof(ts)))
+ return -EFAULT;
+
+ *kts = uts;
+ return 0;
+}
+
static long compat_nanosleep_restart(struct restart_block *restart)
{
struct compat_timespec __user *rmtp;
@@ -117,21 +229,21 @@ static long compat_nanosleep_restart(struct restart_block *restart)
if (ret) {
rmtp = restart->nanosleep.compat_rmtp;
- if (rmtp && put_compat_timespec(&rmt, rmtp))
+ if (rmtp && compat_put_timespec(&rmt, rmtp))
return -EFAULT;
}
return ret;
}
-asmlinkage long compat_sys_nanosleep(struct compat_timespec __user *rqtp,
- struct compat_timespec __user *rmtp)
+COMPAT_SYSCALL_DEFINE2(nanosleep, struct compat_timespec __user *, rqtp,
+ struct compat_timespec __user *, rmtp)
{
struct timespec tu, rmt;
mm_segment_t oldfs;
long ret;
- if (get_compat_timespec(&tu, rqtp))
+ if (compat_get_timespec(&tu, rqtp))
return -EFAULT;
if (!timespec_valid(&tu))
@@ -151,7 +263,7 @@ asmlinkage long compat_sys_nanosleep(struct compat_timespec __user *rqtp,
restart->fn = compat_nanosleep_restart;
restart->nanosleep.compat_rmtp = rmtp;
- if (rmtp && put_compat_timespec(&rmt, rmtp))
+ if (rmtp && compat_put_timespec(&rmt, rmtp))
return -EFAULT;
}
@@ -178,8 +290,8 @@ static inline long put_compat_itimerval(struct compat_itimerval __user *o,
__put_user(i->it_value.tv_usec, &o->it_value.tv_usec)));
}
-asmlinkage long compat_sys_getitimer(int which,
- struct compat_itimerval __user *it)
+COMPAT_SYSCALL_DEFINE2(getitimer, int, which,
+ struct compat_itimerval __user *, it)
{
struct itimerval kit;
int error;
@@ -190,9 +302,9 @@ asmlinkage long compat_sys_getitimer(int which,
return error;
}
-asmlinkage long compat_sys_setitimer(int which,
- struct compat_itimerval __user *in,
- struct compat_itimerval __user *out)
+COMPAT_SYSCALL_DEFINE3(setitimer, int, which,
+ struct compat_itimerval __user *, in,
+ struct compat_itimerval __user *, out)
{
struct itimerval kin, kout;
int error;
@@ -216,7 +328,7 @@ static compat_clock_t clock_t_to_compat_clock_t(clock_t x)
return compat_jiffies_to_clock_t(clock_t_to_jiffies(x));
}
-asmlinkage long compat_sys_times(struct compat_tms __user *tbuf)
+COMPAT_SYSCALL_DEFINE1(times, struct compat_tms __user *, tbuf)
{
if (tbuf) {
struct tms tms;
@@ -235,12 +347,14 @@ asmlinkage long compat_sys_times(struct compat_tms __user *tbuf)
return compat_jiffies_to_clock_t(jiffies);
}
+#ifdef __ARCH_WANT_SYS_SIGPENDING
+
/*
* Assumption: old_sigset_t and compat_old_sigset_t are both
* types that can be passed to put_user()/get_user().
*/
-asmlinkage long compat_sys_sigpending(compat_old_sigset_t __user *set)
+COMPAT_SYSCALL_DEFINE1(sigpending, compat_old_sigset_t __user *, set)
{
old_sigset_t s;
long ret;
@@ -254,29 +368,64 @@ asmlinkage long compat_sys_sigpending(compat_old_sigset_t __user *set)
return ret;
}
-asmlinkage long compat_sys_sigprocmask(int how, compat_old_sigset_t __user *set,
- compat_old_sigset_t __user *oset)
+#endif
+
+#ifdef __ARCH_WANT_SYS_SIGPROCMASK
+
+/*
+ * sys_sigprocmask SIG_SETMASK sets the first (compat) word of the
+ * blocked set of signals to the supplied signal set
+ */
+static inline void compat_sig_setmask(sigset_t *blocked, compat_sigset_word set)
{
- old_sigset_t s;
- long ret;
- mm_segment_t old_fs;
+ memcpy(blocked->sig, &set, sizeof(set));
+}
- if (set && get_user(s, set))
- return -EFAULT;
- old_fs = get_fs();
- set_fs(KERNEL_DS);
- ret = sys_sigprocmask(how,
- set ? (old_sigset_t __user *) &s : NULL,
- oset ? (old_sigset_t __user *) &s : NULL);
- set_fs(old_fs);
- if (ret == 0)
- if (oset)
- ret = put_user(s, oset);
- return ret;
+COMPAT_SYSCALL_DEFINE3(sigprocmask, int, how,
+ compat_old_sigset_t __user *, nset,
+ compat_old_sigset_t __user *, oset)
+{
+ old_sigset_t old_set, new_set;
+ sigset_t new_blocked;
+
+ old_set = current->blocked.sig[0];
+
+ if (nset) {
+ if (get_user(new_set, nset))
+ return -EFAULT;
+ new_set &= ~(sigmask(SIGKILL) | sigmask(SIGSTOP));
+
+ new_blocked = current->blocked;
+
+ switch (how) {
+ case SIG_BLOCK:
+ sigaddsetmask(&new_blocked, new_set);
+ break;
+ case SIG_UNBLOCK:
+ sigdelsetmask(&new_blocked, new_set);
+ break;
+ case SIG_SETMASK:
+ compat_sig_setmask(&new_blocked, new_set);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ set_current_blocked(&new_blocked);
+ }
+
+ if (oset) {
+ if (put_user(old_set, oset))
+ return -EFAULT;
+ }
+
+ return 0;
}
-asmlinkage long compat_sys_setrlimit(unsigned int resource,
- struct compat_rlimit __user *rlim)
+#endif
+
+COMPAT_SYSCALL_DEFINE2(setrlimit, unsigned int, resource,
+ struct compat_rlimit __user *, rlim)
{
struct rlimit r;
@@ -294,15 +443,15 @@ asmlinkage long compat_sys_setrlimit(unsigned int resource,
#ifdef COMPAT_RLIM_OLD_INFINITY
-asmlinkage long compat_sys_old_getrlimit(unsigned int resource,
- struct compat_rlimit __user *rlim)
+COMPAT_SYSCALL_DEFINE2(old_getrlimit, unsigned int, resource,
+ struct compat_rlimit __user *, rlim)
{
struct rlimit r;
int ret;
mm_segment_t old_fs = get_fs();
set_fs(KERNEL_DS);
- ret = sys_old_getrlimit(resource, &r);
+ ret = sys_old_getrlimit(resource, (struct rlimit __user *)&r);
set_fs(old_fs);
if (!ret) {
@@ -321,8 +470,8 @@ asmlinkage long compat_sys_old_getrlimit(unsigned int resource,
#endif
-asmlinkage long compat_sys_getrlimit(unsigned int resource,
- struct compat_rlimit __user *rlim)
+COMPAT_SYSCALL_DEFINE2(getrlimit, unsigned int, resource,
+ struct compat_rlimit __user *, rlim)
{
struct rlimit r;
int ret;
@@ -367,28 +516,11 @@ int put_compat_rusage(const struct rusage *r, struct compat_rusage __user *ru)
return 0;
}
-asmlinkage long compat_sys_getrusage(int who, struct compat_rusage __user *ru)
-{
- struct rusage r;
- int ret;
- mm_segment_t old_fs = get_fs();
-
- set_fs(KERNEL_DS);
- ret = sys_getrusage(who, (struct rusage __user *) &r);
- set_fs(old_fs);
-
- if (ret)
- return ret;
-
- if (put_compat_rusage(&r, ru))
- return -EFAULT;
-
- return 0;
-}
-
-asmlinkage long
-compat_sys_wait4(compat_pid_t pid, compat_uint_t __user *stat_addr, int options,
- struct compat_rusage __user *ru)
+COMPAT_SYSCALL_DEFINE4(wait4,
+ compat_pid_t, pid,
+ compat_uint_t __user *, stat_addr,
+ int, options,
+ struct compat_rusage __user *, ru)
{
if (!ru) {
return sys_wait4(pid, stat_addr, options, NULL);
@@ -415,9 +547,10 @@ compat_sys_wait4(compat_pid_t pid, compat_uint_t __user *stat_addr, int options,
}
}
-asmlinkage long compat_sys_waitid(int which, compat_pid_t pid,
- struct compat_siginfo __user *uinfo, int options,
- struct compat_rusage __user *uru)
+COMPAT_SYSCALL_DEFINE5(waitid,
+ int, which, compat_pid_t, pid,
+ struct compat_siginfo __user *, uinfo, int, options,
+ struct compat_rusage __user *, uru)
{
siginfo_t info;
struct rusage ru;
@@ -435,9 +568,13 @@ asmlinkage long compat_sys_waitid(int which, compat_pid_t pid,
return ret;
if (uru) {
- ret = put_compat_rusage(&ru, uru);
+ /* sys_waitid() overwrites everything in ru */
+ if (COMPAT_USE_64BIT_TIME)
+ ret = copy_to_user(uru, &ru, sizeof(ru));
+ else
+ ret = put_compat_rusage(&ru, uru);
if (ret)
- return ret;
+ return -EFAULT;
}
BUG_ON(info.si_code & __SI_MASK);
@@ -459,9 +596,9 @@ static int compat_get_user_cpu_mask(compat_ulong_t __user *user_mask_ptr,
return compat_get_bitmap(k, user_mask_ptr, len * 8);
}
-asmlinkage long compat_sys_sched_setaffinity(compat_pid_t pid,
- unsigned int len,
- compat_ulong_t __user *user_mask_ptr)
+COMPAT_SYSCALL_DEFINE3(sched_setaffinity, compat_pid_t, pid,
+ unsigned int, len,
+ compat_ulong_t __user *, user_mask_ptr)
{
cpumask_var_t new_mask;
int retval;
@@ -479,8 +616,8 @@ out:
return retval;
}
-asmlinkage long compat_sys_sched_getaffinity(compat_pid_t pid, unsigned int len,
- compat_ulong_t __user *user_mask_ptr)
+COMPAT_SYSCALL_DEFINE3(sched_getaffinity, compat_pid_t, pid, unsigned int, len,
+ compat_ulong_t __user *, user_mask_ptr)
{
int ret;
cpumask_var_t mask;
@@ -510,8 +647,8 @@ asmlinkage long compat_sys_sched_getaffinity(compat_pid_t pid, unsigned int len,
int get_compat_itimerspec(struct itimerspec *dst,
const struct compat_itimerspec __user *src)
{
- if (get_compat_timespec(&dst->it_interval, &src->it_interval) ||
- get_compat_timespec(&dst->it_value, &src->it_value))
+ if (__compat_get_timespec(&dst->it_interval, &src->it_interval) ||
+ __compat_get_timespec(&dst->it_value, &src->it_value))
return -EFAULT;
return 0;
}
@@ -519,15 +656,15 @@ int get_compat_itimerspec(struct itimerspec *dst,
int put_compat_itimerspec(struct compat_itimerspec __user *dst,
const struct itimerspec *src)
{
- if (put_compat_timespec(&src->it_interval, &dst->it_interval) ||
- put_compat_timespec(&src->it_value, &dst->it_value))
+ if (__compat_put_timespec(&src->it_interval, &dst->it_interval) ||
+ __compat_put_timespec(&src->it_value, &dst->it_value))
return -EFAULT;
return 0;
}
-long compat_sys_timer_create(clockid_t which_clock,
- struct compat_sigevent __user *timer_event_spec,
- timer_t __user *created_timer_id)
+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;
@@ -543,9 +680,9 @@ long compat_sys_timer_create(clockid_t which_clock,
return sys_timer_create(which_clock, event, created_timer_id);
}
-long compat_sys_timer_settime(timer_t timer_id, int flags,
- struct compat_itimerspec __user *new,
- struct compat_itimerspec __user *old)
+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;
@@ -566,8 +703,8 @@ long compat_sys_timer_settime(timer_t timer_id, int flags,
return err;
}
-long compat_sys_timer_gettime(timer_t timer_id,
- struct compat_itimerspec __user *setting)
+COMPAT_SYSCALL_DEFINE2(timer_gettime, timer_t, timer_id,
+ struct compat_itimerspec __user *, setting)
{
long err;
mm_segment_t oldfs;
@@ -583,14 +720,14 @@ long compat_sys_timer_gettime(timer_t timer_id,
return err;
}
-long compat_sys_clock_settime(clockid_t which_clock,
- struct compat_timespec __user *tp)
+COMPAT_SYSCALL_DEFINE2(clock_settime, clockid_t, which_clock,
+ struct compat_timespec __user *, tp)
{
long err;
mm_segment_t oldfs;
struct timespec ts;
- if (get_compat_timespec(&ts, tp))
+ if (compat_get_timespec(&ts, tp))
return -EFAULT;
oldfs = get_fs();
set_fs(KERNEL_DS);
@@ -600,8 +737,8 @@ long compat_sys_clock_settime(clockid_t which_clock,
return err;
}
-long compat_sys_clock_gettime(clockid_t which_clock,
- struct compat_timespec __user *tp)
+COMPAT_SYSCALL_DEFINE2(clock_gettime, clockid_t, which_clock,
+ struct compat_timespec __user *, tp)
{
long err;
mm_segment_t oldfs;
@@ -612,13 +749,36 @@ long compat_sys_clock_gettime(clockid_t which_clock,
err = sys_clock_gettime(which_clock,
(struct timespec __user *) &ts);
set_fs(oldfs);
- if (!err && put_compat_timespec(&ts, tp))
+ if (!err && compat_put_timespec(&ts, tp))
return -EFAULT;
return err;
}
-long compat_sys_clock_getres(clockid_t which_clock,
- struct compat_timespec __user *tp)
+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)
{
long err;
mm_segment_t oldfs;
@@ -629,7 +789,7 @@ long compat_sys_clock_getres(clockid_t which_clock,
err = sys_clock_getres(which_clock,
(struct timespec __user *) &ts);
set_fs(oldfs);
- if (!err && tp && put_compat_timespec(&ts, tp))
+ if (!err && tp && compat_put_timespec(&ts, tp))
return -EFAULT;
return err;
}
@@ -639,7 +799,7 @@ static long compat_clock_nanosleep_restart(struct restart_block *restart)
long err;
mm_segment_t oldfs;
struct timespec tu;
- struct compat_timespec *rmtp = restart->nanosleep.compat_rmtp;
+ struct compat_timespec __user *rmtp = restart->nanosleep.compat_rmtp;
restart->nanosleep.rmtp = (struct timespec __user *) &tu;
oldfs = get_fs();
@@ -648,7 +808,7 @@ static long compat_clock_nanosleep_restart(struct restart_block *restart)
set_fs(oldfs);
if ((err == -ERESTART_RESTARTBLOCK) && rmtp &&
- put_compat_timespec(&tu, rmtp))
+ compat_put_timespec(&tu, rmtp))
return -EFAULT;
if (err == -ERESTART_RESTARTBLOCK) {
@@ -658,16 +818,16 @@ static long compat_clock_nanosleep_restart(struct restart_block *restart)
return err;
}
-long compat_sys_clock_nanosleep(clockid_t which_clock, int flags,
- struct compat_timespec __user *rqtp,
- struct compat_timespec __user *rmtp)
+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 (get_compat_timespec(&in, rqtp))
+ if (compat_get_timespec(&in, rqtp))
return -EFAULT;
oldfs = get_fs();
@@ -678,7 +838,7 @@ long compat_sys_clock_nanosleep(clockid_t which_clock, int flags,
set_fs(oldfs);
if ((err == -ERESTART_RESTARTBLOCK) && rmtp &&
- put_compat_timespec(&out, rmtp))
+ compat_put_timespec(&out, rmtp))
return -EFAULT;
if (err == -ERESTART_RESTARTBLOCK) {
@@ -792,7 +952,7 @@ long compat_put_bitmap(compat_ulong_t __user *umask, unsigned long *mask,
}
void
-sigset_from_compat (sigset_t *set, compat_sigset_t *compat)
+sigset_from_compat(sigset_t *set, const compat_sigset_t *compat)
{
switch (_NSIG_WORDS) {
case 4: set->sig[3] = compat->sig[6] | (((long)compat->sig[7]) << 32 );
@@ -801,18 +961,28 @@ sigset_from_compat (sigset_t *set, compat_sigset_t *compat)
case 1: set->sig[0] = compat->sig[0] | (((long)compat->sig[1]) << 32 );
}
}
+EXPORT_SYMBOL_GPL(sigset_from_compat);
-asmlinkage long
-compat_sys_rt_sigtimedwait (compat_sigset_t __user *uthese,
- struct compat_siginfo __user *uinfo,
- struct compat_timespec __user *uts, compat_size_t sigsetsize)
+void
+sigset_to_compat(compat_sigset_t *compat, const sigset_t *set)
+{
+ switch (_NSIG_WORDS) {
+ case 4: compat->sig[7] = (set->sig[3] >> 32); compat->sig[6] = set->sig[3];
+ case 3: compat->sig[5] = (set->sig[2] >> 32); compat->sig[4] = set->sig[2];
+ case 2: compat->sig[3] = (set->sig[1] >> 32); compat->sig[2] = set->sig[1];
+ case 1: compat->sig[1] = (set->sig[0] >> 32); compat->sig[0] = set->sig[0];
+ }
+}
+
+COMPAT_SYSCALL_DEFINE4(rt_sigtimedwait, compat_sigset_t __user *, uthese,
+ struct compat_siginfo __user *, uinfo,
+ struct compat_timespec __user *, uts, compat_size_t, sigsetsize)
{
compat_sigset_t s32;
sigset_t s;
- int sig;
struct timespec t;
siginfo_t info;
- long ret, timeout = 0;
+ long ret;
if (sigsetsize != sizeof(sigset_t))
return -EINVAL;
@@ -820,71 +990,27 @@ compat_sys_rt_sigtimedwait (compat_sigset_t __user *uthese,
if (copy_from_user(&s32, uthese, sizeof(compat_sigset_t)))
return -EFAULT;
sigset_from_compat(&s, &s32);
- sigdelsetmask(&s,sigmask(SIGKILL)|sigmask(SIGSTOP));
- signotset(&s);
if (uts) {
- if (get_compat_timespec (&t, uts))
+ if (compat_get_timespec(&t, uts))
return -EFAULT;
- if (t.tv_nsec >= 1000000000L || t.tv_nsec < 0
- || t.tv_sec < 0)
- return -EINVAL;
}
- spin_lock_irq(&current->sighand->siglock);
- sig = dequeue_signal(current, &s, &info);
- if (!sig) {
- timeout = MAX_SCHEDULE_TIMEOUT;
- if (uts)
- timeout = timespec_to_jiffies(&t)
- +(t.tv_sec || t.tv_nsec);
- if (timeout) {
- current->real_blocked = current->blocked;
- sigandsets(&current->blocked, &current->blocked, &s);
-
- recalc_sigpending();
- spin_unlock_irq(&current->sighand->siglock);
-
- timeout = schedule_timeout_interruptible(timeout);
-
- spin_lock_irq(&current->sighand->siglock);
- sig = dequeue_signal(current, &s, &info);
- current->blocked = current->real_blocked;
- siginitset(&current->real_blocked, 0);
- recalc_sigpending();
- }
- }
- spin_unlock_irq(&current->sighand->siglock);
+ ret = do_sigtimedwait(&s, &info, uts ? &t : NULL);
- if (sig) {
- ret = sig;
- if (uinfo) {
- if (copy_siginfo_to_user32(uinfo, &info))
- ret = -EFAULT;
- }
- }else {
- ret = timeout?-EINTR:-EAGAIN;
+ if (ret > 0 && uinfo) {
+ if (copy_siginfo_to_user32(uinfo, &info))
+ ret = -EFAULT;
}
- return ret;
-}
-
-asmlinkage long
-compat_sys_rt_tgsigqueueinfo(compat_pid_t tgid, compat_pid_t pid, int sig,
- struct compat_siginfo __user *uinfo)
-{
- siginfo_t info;
-
- if (copy_siginfo_from_user32(&info, uinfo))
- return -EFAULT;
- return do_rt_tgsigqueueinfo(tgid, pid, sig, &info);
+ return ret;
}
#ifdef __ARCH_WANT_COMPAT_SYS_TIME
/* compat_time_t is a 32 bit "long" and needs to get converted. */
-asmlinkage long compat_sys_time(compat_time_t __user * tloc)
+COMPAT_SYSCALL_DEFINE1(time, compat_time_t __user *, tloc)
{
compat_time_t i;
struct timeval tv;
@@ -900,7 +1026,7 @@ asmlinkage long compat_sys_time(compat_time_t __user * tloc)
return i;
}
-asmlinkage long compat_sys_stime(compat_time_t __user *tptr)
+COMPAT_SYSCALL_DEFINE1(stime, compat_time_t __user *, tptr)
{
struct timespec tv;
int err;
@@ -920,99 +1046,30 @@ asmlinkage long compat_sys_stime(compat_time_t __user *tptr)
#endif /* __ARCH_WANT_COMPAT_SYS_TIME */
-#ifdef __ARCH_WANT_COMPAT_SYS_RT_SIGSUSPEND
-asmlinkage long compat_sys_rt_sigsuspend(compat_sigset_t __user *unewset, compat_size_t sigsetsize)
-{
- sigset_t newset;
- compat_sigset_t newset32;
-
- /* XXX: Don't preclude handling different sized sigset_t's. */
- if (sigsetsize != sizeof(sigset_t))
- return -EINVAL;
-
- if (copy_from_user(&newset32, unewset, sizeof(compat_sigset_t)))
- return -EFAULT;
- sigset_from_compat(&newset, &newset32);
- sigdelsetmask(&newset, sigmask(SIGKILL)|sigmask(SIGSTOP));
-
- spin_lock_irq(&current->sighand->siglock);
- current->saved_sigmask = current->blocked;
- current->blocked = newset;
- recalc_sigpending();
- spin_unlock_irq(&current->sighand->siglock);
-
- current->state = TASK_INTERRUPTIBLE;
- schedule();
- set_restore_sigmask();
- return -ERESTARTNOHAND;
-}
-#endif /* __ARCH_WANT_COMPAT_SYS_RT_SIGSUSPEND */
-
-asmlinkage long compat_sys_adjtimex(struct compat_timex __user *utp)
+COMPAT_SYSCALL_DEFINE1(adjtimex, struct compat_timex __user *, utp)
{
struct timex txc;
- int ret;
+ int err, ret;
- 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))
- return -EFAULT;
+ err = compat_get_timex(&txc, utp);
+ if (err)
+ return err;
ret = do_adjtimex(&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))
- ret = -EFAULT;
+ err = compat_put_timex(utp, &txc);
+ if (err)
+ return err;
return ret;
}
#ifdef CONFIG_NUMA
-asmlinkage long compat_sys_move_pages(pid_t pid, unsigned long nr_pages,
- compat_uptr_t __user *pages32,
- const int __user *nodes,
- int __user *status,
- int flags)
+COMPAT_SYSCALL_DEFINE6(move_pages, pid_t, pid, compat_ulong_t, nr_pages,
+ compat_uptr_t __user *, pages32,
+ const int __user *, nodes,
+ int __user *, status,
+ int, flags)
{
const void __user * __user *pages;
int i;
@@ -1028,10 +1085,10 @@ asmlinkage long compat_sys_move_pages(pid_t pid, unsigned long nr_pages,
return sys_move_pages(pid, nr_pages, pages, nodes, status, flags);
}
-asmlinkage long compat_sys_migrate_pages(compat_pid_t pid,
- compat_ulong_t maxnode,
- const compat_ulong_t __user *old_nodes,
- const compat_ulong_t __user *new_nodes)
+COMPAT_SYSCALL_DEFINE4(migrate_pages, compat_pid_t, pid,
+ compat_ulong_t, maxnode,
+ const compat_ulong_t __user *, old_nodes,
+ const compat_ulong_t __user *, new_nodes)
{
unsigned long __user *old = NULL;
unsigned long __user *new = NULL;
@@ -1062,69 +1119,20 @@ asmlinkage long compat_sys_migrate_pages(compat_pid_t pid,
}
#endif
-struct compat_sysinfo {
- s32 uptime;
- u32 loads[3];
- u32 totalram;
- u32 freeram;
- u32 sharedram;
- u32 bufferram;
- u32 totalswap;
- u32 freeswap;
- u16 procs;
- u16 pad;
- u32 totalhigh;
- u32 freehigh;
- u32 mem_unit;
- char _f[20-2*sizeof(u32)-sizeof(int)];
-};
-
-asmlinkage long
-compat_sys_sysinfo(struct compat_sysinfo __user *info)
+COMPAT_SYSCALL_DEFINE2(sched_rr_get_interval,
+ compat_pid_t, pid,
+ struct compat_timespec __user *, interval)
{
- struct sysinfo s;
-
- do_sysinfo(&s);
-
- /* Check to see if any memory value is too large for 32-bit and scale
- * down if needed
- */
- if ((s.totalram >> 32) || (s.totalswap >> 32)) {
- int bitcount = 0;
-
- while (s.mem_unit < PAGE_SIZE) {
- s.mem_unit <<= 1;
- bitcount++;
- }
-
- s.totalram >>= bitcount;
- s.freeram >>= bitcount;
- s.sharedram >>= bitcount;
- s.bufferram >>= bitcount;
- s.totalswap >>= bitcount;
- s.freeswap >>= bitcount;
- s.totalhigh >>= bitcount;
- s.freehigh >>= bitcount;
- }
+ struct timespec t;
+ int ret;
+ mm_segment_t old_fs = get_fs();
- if (!access_ok(VERIFY_WRITE, info, sizeof(struct compat_sysinfo)) ||
- __put_user (s.uptime, &info->uptime) ||
- __put_user (s.loads[0], &info->loads[0]) ||
- __put_user (s.loads[1], &info->loads[1]) ||
- __put_user (s.loads[2], &info->loads[2]) ||
- __put_user (s.totalram, &info->totalram) ||
- __put_user (s.freeram, &info->freeram) ||
- __put_user (s.sharedram, &info->sharedram) ||
- __put_user (s.bufferram, &info->bufferram) ||
- __put_user (s.totalswap, &info->totalswap) ||
- __put_user (s.freeswap, &info->freeswap) ||
- __put_user (s.procs, &info->procs) ||
- __put_user (s.totalhigh, &info->totalhigh) ||
- __put_user (s.freehigh, &info->freehigh) ||
- __put_user (s.mem_unit, &info->mem_unit))
+ set_fs(KERNEL_DS);
+ ret = sys_sched_rr_get_interval(pid, (struct timespec __user *)&t);
+ set_fs(old_fs);
+ if (compat_put_timespec(&t, interval))
return -EFAULT;
-
- return 0;
+ return ret;
}
/*
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-09 21:54:22 +0000