__put_user(ts->tv_nsec, &cts->tv_nsec)) ? -EFAULT : 0;
}
+static int __compat_get_timespec64(struct timespec64 *ts64,
+ const struct compat_timespec __user *cts)
+{
+ struct compat_timespec ts;
+ int ret;
+
+ ret = copy_from_user(&ts, cts, sizeof(ts));
+ if (ret)
+ return -EFAULT;
+
+ ts64->tv_sec = ts.tv_sec;
+ ts64->tv_nsec = ts.tv_nsec;
+
+ return 0;
+}
+
+static int __compat_put_timespec64(const struct timespec64 *ts64,
+ struct compat_timespec __user *cts)
+{
+ struct compat_timespec ts = {
+ .tv_sec = ts64->tv_sec,
+ .tv_nsec = ts64->tv_nsec
+ };
+ return copy_to_user(cts, &ts, sizeof(ts)) ? -EFAULT : 0;
+}
+
+int compat_get_timespec64(struct timespec64 *ts, const void __user *uts)
+{
+ if (COMPAT_USE_64BIT_TIME)
+ return copy_from_user(ts, uts, sizeof(*ts)) ? -EFAULT : 0;
+ else
+ return __compat_get_timespec64(ts, uts);
+}
+EXPORT_SYMBOL_GPL(compat_get_timespec64);
+
+int compat_put_timespec64(const struct timespec64 *ts, void __user *uts)
+{
+ if (COMPAT_USE_64BIT_TIME)
+ return copy_to_user(uts, ts, sizeof(*ts)) ? -EFAULT : 0;
+ else
+ return __compat_put_timespec64(ts, uts);
+}
+EXPORT_SYMBOL_GPL(compat_put_timespec64);
+
int compat_get_timeval(struct timeval *tv, const void __user *utv)
{
if (COMPAT_USE_64BIT_TIME)
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)
-{
- return compat_jiffies_to_clock_t(clock_t_to_jiffies(x));
-}
-
-COMPAT_SYSCALL_DEFINE1(times, struct compat_tms __user *, tbuf)
-{
- if (tbuf) {
- struct tms tms;
- struct compat_tms tmp;
-
- do_sys_times(&tms);
- /* Convert our struct tms to the compat version. */
- tmp.tms_utime = clock_t_to_compat_clock_t(tms.tms_utime);
- tmp.tms_stime = clock_t_to_compat_clock_t(tms.tms_stime);
- tmp.tms_cutime = clock_t_to_compat_clock_t(tms.tms_cutime);
- tmp.tms_cstime = clock_t_to_compat_clock_t(tms.tms_cstime);
- if (copy_to_user(tbuf, &tmp, sizeof(tmp)))
- return -EFAULT;
- }
- force_successful_syscall_return();
- 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().
- */
-
-COMPAT_SYSCALL_DEFINE1(sigpending, compat_old_sigset_t __user *, set)
-{
- old_sigset_t s;
- long ret;
- mm_segment_t old_fs = get_fs();
-
- set_fs(KERNEL_DS);
- ret = sys_sigpending((old_sigset_t __user *) &s);
- set_fs(old_fs);
- if (ret == 0)
- ret = put_user(s, set);
- return ret;
-}
-
-#endif
-
#ifdef __ARCH_WANT_SYS_SIGPROCMASK
/*
#endif
-COMPAT_SYSCALL_DEFINE2(setrlimit, unsigned int, resource,
- struct compat_rlimit __user *, rlim)
-{
- struct rlimit r;
-
- if (!access_ok(VERIFY_READ, rlim, sizeof(*rlim)) ||
- __get_user(r.rlim_cur, &rlim->rlim_cur) ||
- __get_user(r.rlim_max, &rlim->rlim_max))
- return -EFAULT;
-
- if (r.rlim_cur == COMPAT_RLIM_INFINITY)
- r.rlim_cur = RLIM_INFINITY;
- if (r.rlim_max == COMPAT_RLIM_INFINITY)
- r.rlim_max = RLIM_INFINITY;
- return do_prlimit(current, resource, &r, NULL);
-}
-
-#ifdef COMPAT_RLIM_OLD_INFINITY
-
-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, (struct rlimit __user *)&r);
- set_fs(old_fs);
-
- if (!ret) {
- if (r.rlim_cur > COMPAT_RLIM_OLD_INFINITY)
- r.rlim_cur = COMPAT_RLIM_INFINITY;
- if (r.rlim_max > COMPAT_RLIM_OLD_INFINITY)
- r.rlim_max = COMPAT_RLIM_INFINITY;
-
- if (!access_ok(VERIFY_WRITE, rlim, sizeof(*rlim)) ||
- __put_user(r.rlim_cur, &rlim->rlim_cur) ||
- __put_user(r.rlim_max, &rlim->rlim_max))
- return -EFAULT;
- }
- return ret;
-}
-
-#endif
-
-COMPAT_SYSCALL_DEFINE2(getrlimit, unsigned int, resource,
- struct compat_rlimit __user *, rlim)
-{
- struct rlimit r;
- int ret;
-
- ret = do_prlimit(current, resource, NULL, &r);
- if (!ret) {
- if (r.rlim_cur > COMPAT_RLIM_INFINITY)
- r.rlim_cur = COMPAT_RLIM_INFINITY;
- if (r.rlim_max > COMPAT_RLIM_INFINITY)
- r.rlim_max = COMPAT_RLIM_INFINITY;
-
- if (!access_ok(VERIFY_WRITE, rlim, sizeof(*rlim)) ||
- __put_user(r.rlim_cur, &rlim->rlim_cur) ||
- __put_user(r.rlim_max, &rlim->rlim_max))
- return -EFAULT;
- }
- return ret;
-}
-
int put_compat_rusage(const struct rusage *r, struct compat_rusage __user *ru)
{
- if (!access_ok(VERIFY_WRITE, ru, sizeof(*ru)) ||
- __put_user(r->ru_utime.tv_sec, &ru->ru_utime.tv_sec) ||
- __put_user(r->ru_utime.tv_usec, &ru->ru_utime.tv_usec) ||
- __put_user(r->ru_stime.tv_sec, &ru->ru_stime.tv_sec) ||
- __put_user(r->ru_stime.tv_usec, &ru->ru_stime.tv_usec) ||
- __put_user(r->ru_maxrss, &ru->ru_maxrss) ||
- __put_user(r->ru_ixrss, &ru->ru_ixrss) ||
- __put_user(r->ru_idrss, &ru->ru_idrss) ||
- __put_user(r->ru_isrss, &ru->ru_isrss) ||
- __put_user(r->ru_minflt, &ru->ru_minflt) ||
- __put_user(r->ru_majflt, &ru->ru_majflt) ||
- __put_user(r->ru_nswap, &ru->ru_nswap) ||
- __put_user(r->ru_inblock, &ru->ru_inblock) ||
- __put_user(r->ru_oublock, &ru->ru_oublock) ||
- __put_user(r->ru_msgsnd, &ru->ru_msgsnd) ||
- __put_user(r->ru_msgrcv, &ru->ru_msgrcv) ||
- __put_user(r->ru_nsignals, &ru->ru_nsignals) ||
- __put_user(r->ru_nvcsw, &ru->ru_nvcsw) ||
- __put_user(r->ru_nivcsw, &ru->ru_nivcsw))
+ struct compat_rusage r32;
+ memset(&r32, 0, sizeof(r32));
+ r32.ru_utime.tv_sec = r->ru_utime.tv_sec;
+ r32.ru_utime.tv_usec = r->ru_utime.tv_usec;
+ r32.ru_stime.tv_sec = r->ru_stime.tv_sec;
+ r32.ru_stime.tv_usec = r->ru_stime.tv_usec;
+ r32.ru_maxrss = r->ru_maxrss;
+ r32.ru_ixrss = r->ru_ixrss;
+ r32.ru_idrss = r->ru_idrss;
+ r32.ru_isrss = r->ru_isrss;
+ r32.ru_minflt = r->ru_minflt;
+ r32.ru_majflt = r->ru_majflt;
+ r32.ru_nswap = r->ru_nswap;
+ r32.ru_inblock = r->ru_inblock;
+ r32.ru_oublock = r->ru_oublock;
+ r32.ru_msgsnd = r->ru_msgsnd;
+ r32.ru_msgrcv = r->ru_msgrcv;
+ r32.ru_nsignals = r->ru_nsignals;
+ r32.ru_nvcsw = r->ru_nvcsw;
+ r32.ru_nivcsw = r->ru_nivcsw;
+ if (copy_to_user(ru, &r32, sizeof(r32)))
return -EFAULT;
return 0;
}
-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);
- } else {
- struct rusage r;
- int ret;
- unsigned int status;
- mm_segment_t old_fs = get_fs();
-
- set_fs (KERNEL_DS);
- ret = sys_wait4(pid,
- (stat_addr ?
- (unsigned int __user *) &status : NULL),
- options, (struct rusage __user *) &r);
- set_fs (old_fs);
-
- if (ret > 0) {
- if (put_compat_rusage(&r, ru))
- return -EFAULT;
- if (stat_addr && put_user(status, stat_addr))
- return -EFAULT;
- }
- return ret;
- }
-}
-
-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;
- long ret;
- mm_segment_t old_fs = get_fs();
-
- memset(&info, 0, sizeof(info));
-
- set_fs(KERNEL_DS);
- ret = sys_waitid(which, pid, (siginfo_t __user *)&info, options,
- uru ? (struct rusage __user *)&ru : NULL);
- set_fs(old_fs);
-
- if ((ret < 0) || (info.si_signo == 0))
- return ret;
-
- if (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 -EFAULT;
- }
-
- BUG_ON(info.si_code & __SI_MASK);
- info.si_code |= __SI_CHLD;
- return copy_siginfo_to_user32(uinfo, &info);
-}
-
static int compat_get_user_cpu_mask(compat_ulong_t __user *user_mask_ptr,
unsigned len, struct cpumask *new_mask)
{
return 0;
}
+int get_compat_itimerspec64(struct itimerspec64 *its,
+ const struct compat_itimerspec __user *uits)
+{
+
+ if (__compat_get_timespec64(&its->it_interval, &uits->it_interval) ||
+ __compat_get_timespec64(&its->it_value, &uits->it_value))
+ return -EFAULT;
+ return 0;
+}
+EXPORT_SYMBOL_GPL(get_compat_itimerspec64);
+
+int put_compat_itimerspec64(const struct itimerspec64 *its,
+ struct compat_itimerspec __user *uits)
+{
+ if (__compat_put_timespec64(&its->it_interval, &uits->it_interval) ||
+ __compat_put_timespec64(&its->it_value, &uits->it_value))
+ return -EFAULT;
+ return 0;
+}
+EXPORT_SYMBOL_GPL(put_compat_itimerspec64);
+
/*
* We currently only need the following fields from the sigevent
* structure: sigev_value, sigev_signo, sig_notify and (sometimes
long compat_get_bitmap(unsigned long *mask, const compat_ulong_t __user *umask,
unsigned long bitmap_size)
{
- int i, j;
- unsigned long m;
- compat_ulong_t um;
unsigned long nr_compat_longs;
/* align bitmap up to nearest compat_long_t boundary */
bitmap_size = ALIGN(bitmap_size, BITS_PER_COMPAT_LONG);
+ nr_compat_longs = BITS_TO_COMPAT_LONGS(bitmap_size);
if (!access_ok(VERIFY_READ, umask, bitmap_size / 8))
return -EFAULT;
- nr_compat_longs = BITS_TO_COMPAT_LONGS(bitmap_size);
-
- for (i = 0; i < BITS_TO_LONGS(bitmap_size); i++) {
- m = 0;
-
- for (j = 0; j < sizeof(m)/sizeof(um); j++) {
- /*
- * We dont want to read past the end of the userspace
- * bitmap. We must however ensure the end of the
- * kernel bitmap is zeroed.
- */
- if (nr_compat_longs) {
- nr_compat_longs--;
- if (__get_user(um, umask))
- return -EFAULT;
- } else {
- um = 0;
- }
-
- umask++;
- m |= (long)um << (j * BITS_PER_COMPAT_LONG);
- }
- *mask++ = m;
+ user_access_begin();
+ while (nr_compat_longs > 1) {
+ compat_ulong_t l1, l2;
+ unsafe_get_user(l1, umask++, Efault);
+ unsafe_get_user(l2, umask++, Efault);
+ *mask++ = ((unsigned long)l2 << BITS_PER_COMPAT_LONG) | l1;
+ nr_compat_longs -= 2;
}
-
+ if (nr_compat_longs)
+ unsafe_get_user(*mask, umask++, Efault);
+ user_access_end();
return 0;
+
+Efault:
+ user_access_end();
+ return -EFAULT;
}
long compat_put_bitmap(compat_ulong_t __user *umask, unsigned long *mask,
unsigned long bitmap_size)
{
- int i, j;
- unsigned long m;
- compat_ulong_t um;
unsigned long nr_compat_longs;
/* align bitmap up to nearest compat_long_t boundary */
bitmap_size = ALIGN(bitmap_size, BITS_PER_COMPAT_LONG);
+ nr_compat_longs = BITS_TO_COMPAT_LONGS(bitmap_size);
if (!access_ok(VERIFY_WRITE, umask, bitmap_size / 8))
return -EFAULT;
- nr_compat_longs = BITS_TO_COMPAT_LONGS(bitmap_size);
-
- for (i = 0; i < BITS_TO_LONGS(bitmap_size); i++) {
- m = *mask++;
-
- for (j = 0; j < sizeof(m)/sizeof(um); j++) {
- um = m;
-
- /*
- * We dont want to write past the end of the userspace
- * bitmap.
- */
- if (nr_compat_longs) {
- nr_compat_longs--;
- if (__put_user(um, umask))
- return -EFAULT;
- }
-
- umask++;
- m >>= 4*sizeof(um);
- m >>= 4*sizeof(um);
- }
+ user_access_begin();
+ while (nr_compat_longs > 1) {
+ unsigned long m = *mask++;
+ unsafe_put_user((compat_ulong_t)m, umask++, Efault);
+ unsafe_put_user(m >> BITS_PER_COMPAT_LONG, umask++, Efault);
+ nr_compat_longs -= 2;
}
-
+ if (nr_compat_longs)
+ unsafe_put_user((compat_ulong_t)*mask, umask++, Efault);
+ user_access_end();
return 0;
+Efault:
+ user_access_end();
+ return -EFAULT;
}
void
}
}
-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;
- struct timespec t;
- siginfo_t info;
- long ret;
-
- if (sigsetsize != sizeof(sigset_t))
- return -EINVAL;
-
- if (copy_from_user(&s32, uthese, sizeof(compat_sigset_t)))
- return -EFAULT;
- sigset_from_compat(&s, &s32);
-
- if (uts) {
- if (compat_get_timespec(&t, uts))
- return -EFAULT;
- }
-
- ret = do_sigtimedwait(&s, &info, uts ? &t : NULL);
-
- if (ret > 0 && uinfo) {
- if (copy_siginfo_to_user32(uinfo, &info))
- ret = -EFAULT;
- }
-
- return ret;
-}
-
#ifdef CONFIG_NUMA
COMPAT_SYSCALL_DEFINE6(move_pages, pid_t, pid, compat_ulong_t, nr_pages,
compat_uptr_t __user *, pages32,
projects / karo-tx-linux.git / blobdiff