* arch/sh/boards/vapor/setup.c - Setup code for imaginary board
*/
#include <linux/init.h>
-#include <asm/rtc.h> /* for board_time_init() */
const char *get_system_type(void)
{
* this board.
*/
- /*
- * Presume all FooTech boards have the same broken timer,
- * and also presume that we've defined foo_timer_init to
- * do something useful.
- */
- board_time_init = foo_timer_init;
-
/* Start-up imaginary PCI ... */
/* And whatever else ... */
# Makefile for the Sega Dreamcast specific parts of the kernel
#
-obj-y := setup.o irq.o rtc.o
-
+obj-y := setup.o irq.o
+obj-$(CONFIG_RTC_DRV_GENERIC) += rtc.o
*/
#include <linux/time.h>
-#include <asm/rtc.h>
-#include <asm/io.h>
+#include <linux/rtc.h>
+#include <linux/io.h>
+#include <linux/platform_device.h>
/* The AICA RTC has an Epoch of 1/1/1950, so we must subtract 20 years (in
seconds) to get the standard Unix Epoch when getting the time, and add
/**
* aica_rtc_gettimeofday - Get the time from the AICA RTC
- * @ts: pointer to resulting timespec
+ * @dev: the RTC device (ignored)
+ * @tm: pointer to resulting RTC time structure
*
* Grabs the current RTC seconds counter and adjusts it to the Unix Epoch.
*/
-static void aica_rtc_gettimeofday(struct timespec *ts)
+static int aica_rtc_gettimeofday(struct device *dev, struct rtc_time *tm)
{
unsigned long val1, val2;
+ time64_t t;
do {
val1 = ((__raw_readl(AICA_RTC_SECS_H) & 0xffff) << 16) |
(__raw_readl(AICA_RTC_SECS_L) & 0xffff);
} while (val1 != val2);
- ts->tv_sec = val1 - TWENTY_YEARS;
+ /* normalize to 1970..2106 time range */
+ t = (u32)(val1 - TWENTY_YEARS);
- /* Can't get nanoseconds with just a seconds counter. */
- ts->tv_nsec = 0;
+ rtc_time64_to_tm(t, tm);
+
+ return 0;
}
/**
* aica_rtc_settimeofday - Set the AICA RTC to the current time
- * @secs: contains the time_t to set
+ * @dev: the RTC device (ignored)
+ * @tm: pointer to new RTC time structure
*
* Adjusts the given @tv to the AICA Epoch and sets the RTC seconds counter.
*/
-static int aica_rtc_settimeofday(const time_t secs)
+static int aica_rtc_settimeofday(struct device *dev, struct rtc_time *tm)
{
unsigned long val1, val2;
- unsigned long adj = secs + TWENTY_YEARS;
+ time64_t secs = rtc_tm_to_time64(tm);
+ u32 adj = secs + TWENTY_YEARS;
do {
__raw_writel((adj & 0xffff0000) >> 16, AICA_RTC_SECS_H);
return 0;
}
-void aica_time_init(void)
+static const struct rtc_class_ops rtc_generic_ops = {
+ .read_time = aica_rtc_gettimeofday,
+ .set_time = aica_rtc_settimeofday,
+};
+
+static int __init aica_time_init(void)
{
- rtc_sh_get_time = aica_rtc_gettimeofday;
- rtc_sh_set_time = aica_rtc_settimeofday;
-}
+ struct platform_device *pdev;
+
+ pdev = platform_device_register_data(NULL, "rtc-generic", -1,
+ &rtc_generic_ops,
+ sizeof(rtc_generic_ops));
+ return PTR_ERR_OR_ZERO(pdev);
+}
+arch_initcall(aica_time_init);
static void __init dreamcast_setup(char **cmdline_p)
{
- board_time_init = aica_time_init;
}
static struct sh_machine_vector mv_dreamcast __initmv = {
# Makefile for the Interface (CTP/PCI-SH03) specific parts of the kernel
#
-obj-y := setup.o rtc.o
+obj-y := setup.o
+obj-$(CONFIG_RTC_DRV_GENERIC) += rtc.o
#include <linux/bcd.h>
#include <linux/rtc.h>
#include <linux/spinlock.h>
-#include <asm/io.h>
-#include <asm/rtc.h>
+#include <linux/io.h>
+#include <linux/rtc.h>
+#include <linux/platform_device.h>
#define RTC_BASE 0xb0000000
#define RTC_SEC1 (RTC_BASE + 0)
static DEFINE_SPINLOCK(sh03_rtc_lock);
-unsigned long get_cmos_time(void)
+static int sh03_rtc_gettimeofday(struct device *dev, struct rtc_time *tm)
{
unsigned int year, mon, day, hour, min, sec;
}
spin_unlock(&sh03_rtc_lock);
- return mktime(year, mon, day, hour, min, sec);
-}
-void sh03_rtc_gettimeofday(struct timespec *tv)
-{
+ tm->tm_sec = sec;
+ tm->tm_min = min;
+ tm->tm_hour = hour;
+ tm->tm_mday = day;
+ tm->tm_mon = mon;
+ tm->tm_year = year - 1900;
- tv->tv_sec = get_cmos_time();
- tv->tv_nsec = 0;
+ return 0;
}
-static int set_rtc_mmss(unsigned long nowtime)
+static int set_rtc_mmss(struct rtc_time *tm)
{
int retval = 0;
int real_seconds, real_minutes, cmos_minutes;
if (!(__raw_readb(RTC_CTL) & RTC_BUSY))
break;
cmos_minutes = (__raw_readb(RTC_MIN1) & 0xf) + (__raw_readb(RTC_MIN10) & 0xf) * 10;
- real_seconds = nowtime % 60;
- real_minutes = nowtime / 60;
+ real_seconds = tm->tm_sec;
+ real_minutes = tm->tm_min;
if (((abs(real_minutes - cmos_minutes) + 15)/30) & 1)
real_minutes += 30; /* correct for half hour time zone */
real_minutes %= 60;
printk_once(KERN_NOTICE
"set_rtc_mmss: can't update from %d to %d\n",
cmos_minutes, real_minutes);
- retval = -1;
+ retval = -EINVAL;
}
spin_unlock(&sh03_rtc_lock);
return retval;
}
-int sh03_rtc_settimeofday(const time_t secs)
+int sh03_rtc_settimeofday(struct device *dev, struct rtc_time *tm)
{
- unsigned long nowtime = secs;
-
- return set_rtc_mmss(nowtime);
+ return set_rtc_mmss(tm);
}
-void sh03_time_init(void)
+static const struct rtc_class_ops rtc_generic_ops = {
+ .read_time = sh03_rtc_gettimeofday,
+ .set_time = sh03_rtc_settimeofday,
+};
+
+static int __init sh03_time_init(void)
{
- rtc_sh_get_time = sh03_rtc_gettimeofday;
- rtc_sh_set_time = sh03_rtc_settimeofday;
+ struct platform_device *pdev;
+
+ pdev = platform_device_register_data(NULL, "rtc-generic", -1,
+ &rtc_generic_ops,
+ sizeof(rtc_generic_ops));
+
+ return PTR_ERR_OR_ZERO(pdev);
}
+arch_initcall(sh03_time_init);
plat_irq_setup_pins(IRQ_MODE_IRQ);
}
-/* arch/sh/boards/sh03/rtc.c */
-void sh03_time_init(void);
-
-static void __init sh03_setup(char **cmdline_p)
-{
- board_time_init = sh03_time_init;
-}
-
static struct resource cf_ide_resources[] = {
[0] = {
.start = 0x1f0,
static struct sh_machine_vector mv_sh03 __initmv = {
.mv_name = "Interface (CTP/PCI-SH03)",
- .mv_setup = sh03_setup,
.mv_init_irq = init_sh03_IRQ,
};
early_init_fdt_scan_reserved_mem();
}
-static void __init sh_of_time_init(void)
-{
- pr_info("SH generic board support: scanning for clocksource devices\n");
- timer_probe();
-}
-
static void __init sh_of_setup(char **cmdline_p)
{
struct device_node *root;
- board_time_init = sh_of_time_init;
-
sh_mv.mv_name = "Unknown SH model";
root = of_find_node_by_path("/");
if (root) {
CONFIG_TMPFS=y
CONFIG_HUGETLBFS=y
# CONFIG_CRYPTO_ANSI_CPRNG is not set
+CONFIG_RTC_CLASS=y
+CONFIG_RTC_DRV_GENERIC=y
CONFIG_CRYPTO_DEFLATE=y
# CONFIG_CRYPTO_ANSI_CPRNG is not set
CONFIG_CRC_CCITT=y
+CONFIG_RTC_CLASS=y
+CONFIG_RTC_DRV_GENERIC=y
#define _ASM_RTC_H
void time_init(void);
-extern void (*board_time_init)(void);
-extern void (*rtc_sh_get_time)(struct timespec *);
-extern int (*rtc_sh_set_time)(const time_t);
#define RTC_CAP_4_DIGIT_YEAR (1 << 0)
/* arch/sh/boards/mach-dreamcast/irq.c */
extern int systemasic_irq_demux(int);
extern void systemasic_irq_init(void);
-extern void aica_time_init(void);
#endif /* __ASM_SH_DREAMCAST_SYSASIC_H */
#include <asm/clock.h>
#include <asm/rtc.h>
-/* Dummy RTC ops */
-static void null_rtc_get_time(struct timespec *tv)
-{
- tv->tv_sec = mktime(2000, 1, 1, 0, 0, 0);
- tv->tv_nsec = 0;
-}
-
-static int null_rtc_set_time(const time_t secs)
-{
- return 0;
-}
-
-void (*rtc_sh_get_time)(struct timespec *) = null_rtc_get_time;
-int (*rtc_sh_set_time)(const time_t) = null_rtc_set_time;
-
-void read_persistent_clock(struct timespec *ts)
-{
- rtc_sh_get_time(ts);
-}
-
-#ifdef CONFIG_GENERIC_CMOS_UPDATE
-int update_persistent_clock(struct timespec now)
-{
- return rtc_sh_set_time(now.tv_sec);
-}
-#endif
-
-static int rtc_generic_get_time(struct device *dev, struct rtc_time *tm)
-{
- struct timespec tv;
-
- rtc_sh_get_time(&tv);
- rtc_time_to_tm(tv.tv_sec, tm);
- return 0;
-}
-
-static int rtc_generic_set_time(struct device *dev, struct rtc_time *tm)
-{
- unsigned long secs;
-
- rtc_tm_to_time(tm, &secs);
- if ((rtc_sh_set_time == null_rtc_set_time) ||
- (rtc_sh_set_time(secs) < 0))
- return -EOPNOTSUPP;
-
- return 0;
-}
-
-static const struct rtc_class_ops rtc_generic_ops = {
- .read_time = rtc_generic_get_time,
- .set_time = rtc_generic_set_time,
-};
-
-static int __init rtc_generic_init(void)
-{
- struct platform_device *pdev;
-
- if (rtc_sh_get_time == null_rtc_get_time)
- return -ENODEV;
-
- pdev = platform_device_register_data(NULL, "rtc-generic", -1,
- &rtc_generic_ops,
- sizeof(rtc_generic_ops));
-
-
- return PTR_ERR_OR_ZERO(pdev);
-}
-device_initcall(rtc_generic_init);
-
-void (*board_time_init)(void);
-
static void __init sh_late_time_init(void)
{
/*
void __init time_init(void)
{
- if (board_time_init)
- board_time_init();
+ timer_probe();
clk_init();
* specifies an infinite timeout. Note that the timeout pointed to by
* timeout is relative. Will fail with -ENOSYS if not implemented.
*/
+#if !defined(CONFIG_64BIT_TIME) || defined(CONFIG_64BIT)
+
SYSCALL_DEFINE5(io_getevents, aio_context_t, ctx_id,
long, min_nr,
long, nr,
struct io_event __user *, events,
- struct timespec __user *, timeout)
+ struct __kernel_timespec __user *, timeout)
{
struct timespec64 ts;
int ret;
return ret;
}
+#endif
+
struct __aio_sigset {
const sigset_t __user *sigmask;
size_t sigsetsize;
long, min_nr,
long, nr,
struct io_event __user *, events,
- struct timespec __user *, timeout,
+ struct __kernel_timespec __user *, timeout,
const struct __aio_sigset __user *, usig)
{
struct __aio_sigset ksig = { NULL, };
if (usig && copy_from_user(&ksig, usig, sizeof(ksig)))
return -EFAULT;
- if (ksig.sigmask) {
- if (ksig.sigsetsize != sizeof(sigset_t))
- return -EINVAL;
- if (copy_from_user(&ksigmask, ksig.sigmask, sizeof(ksigmask)))
- return -EFAULT;
- sigdelsetmask(&ksigmask, sigmask(SIGKILL) | sigmask(SIGSTOP));
- sigprocmask(SIG_SETMASK, &ksigmask, &sigsaved);
- }
+ ret = set_user_sigmask(ksig.sigmask, &ksigmask, &sigsaved, ksig.sigsetsize);
+ if (ret)
+ return ret;
ret = do_io_getevents(ctx_id, min_nr, nr, events, timeout ? &ts : NULL);
- if (signal_pending(current)) {
- if (ksig.sigmask) {
- current->saved_sigmask = sigsaved;
- set_restore_sigmask();
- }
+ restore_user_sigmask(ksig.sigmask, &sigsaved);
+ if (signal_pending(current) && !ret)
+ ret = -ERESTARTNOHAND;
- if (!ret)
- ret = -ERESTARTNOHAND;
- } else {
- if (ksig.sigmask)
- sigprocmask(SIG_SETMASK, &sigsaved, NULL);
- }
+ return ret;
+}
+
+#if defined(CONFIG_COMPAT_32BIT_TIME) && !defined(CONFIG_64BIT)
+
+SYSCALL_DEFINE6(io_pgetevents_time32,
+ aio_context_t, ctx_id,
+ long, min_nr,
+ long, nr,
+ struct io_event __user *, events,
+ struct old_timespec32 __user *, timeout,
+ const struct __aio_sigset __user *, usig)
+{
+ struct __aio_sigset ksig = { NULL, };
+ sigset_t ksigmask, sigsaved;
+ struct timespec64 ts;
+ int ret;
+
+ if (timeout && unlikely(get_old_timespec32(&ts, timeout)))
+ return -EFAULT;
+
+ if (usig && copy_from_user(&ksig, usig, sizeof(ksig)))
+ return -EFAULT;
+
+
+ ret = set_user_sigmask(ksig.sigmask, &ksigmask, &sigsaved, ksig.sigsetsize);
+ if (ret)
+ return ret;
+
+ ret = do_io_getevents(ctx_id, min_nr, nr, events, timeout ? &ts : NULL);
+ restore_user_sigmask(ksig.sigmask, &sigsaved);
+ if (signal_pending(current) && !ret)
+ ret = -ERESTARTNOHAND;
return ret;
}
-#ifdef CONFIG_COMPAT
+#endif
+
+#if defined(CONFIG_COMPAT_32BIT_TIME)
+
COMPAT_SYSCALL_DEFINE5(io_getevents, compat_aio_context_t, ctx_id,
compat_long_t, min_nr,
compat_long_t, nr,
return ret;
}
+#endif
+
+#ifdef CONFIG_COMPAT
struct __compat_aio_sigset {
compat_sigset_t __user *sigmask;
compat_size_t sigsetsize;
};
+#if defined(CONFIG_COMPAT_32BIT_TIME)
+
COMPAT_SYSCALL_DEFINE6(io_pgetevents,
compat_aio_context_t, ctx_id,
compat_long_t, min_nr,
if (usig && copy_from_user(&ksig, usig, sizeof(ksig)))
return -EFAULT;
- if (ksig.sigmask) {
- if (ksig.sigsetsize != sizeof(compat_sigset_t))
- return -EINVAL;
- if (get_compat_sigset(&ksigmask, ksig.sigmask))
- return -EFAULT;
- sigdelsetmask(&ksigmask, sigmask(SIGKILL) | sigmask(SIGSTOP));
- sigprocmask(SIG_SETMASK, &ksigmask, &sigsaved);
- }
+ ret = set_compat_user_sigmask(ksig.sigmask, &ksigmask, &sigsaved, ksig.sigsetsize);
+ if (ret)
+ return ret;
ret = do_io_getevents(ctx_id, min_nr, nr, events, timeout ? &t : NULL);
- if (signal_pending(current)) {
- if (ksig.sigmask) {
- current->saved_sigmask = sigsaved;
- set_restore_sigmask();
- }
- if (!ret)
- ret = -ERESTARTNOHAND;
- } else {
- if (ksig.sigmask)
- sigprocmask(SIG_SETMASK, &sigsaved, NULL);
- }
+ restore_user_sigmask(ksig.sigmask, &sigsaved);
+ if (signal_pending(current) && !ret)
+ ret = -ERESTARTNOHAND;
+
+ return ret;
+}
+
+#endif
+
+COMPAT_SYSCALL_DEFINE6(io_pgetevents_time64,
+ compat_aio_context_t, ctx_id,
+ compat_long_t, min_nr,
+ compat_long_t, nr,
+ struct io_event __user *, events,
+ struct __kernel_timespec __user *, timeout,
+ const struct __compat_aio_sigset __user *, usig)
+{
+ struct __compat_aio_sigset ksig = { NULL, };
+ sigset_t ksigmask, sigsaved;
+ struct timespec64 t;
+ int ret;
+
+ if (timeout && get_timespec64(&t, timeout))
+ return -EFAULT;
+
+ if (usig && copy_from_user(&ksig, usig, sizeof(ksig)))
+ return -EFAULT;
+
+ ret = set_compat_user_sigmask(ksig.sigmask, &ksigmask, &sigsaved, ksig.sigsetsize);
+ if (ret)
+ return ret;
+
+ ret = do_io_getevents(ctx_id, min_nr, nr, events, timeout ? &t : NULL);
+ restore_user_sigmask(ksig.sigmask, &sigsaved);
+ if (signal_pending(current) && !ret)
+ ret = -ERESTARTNOHAND;
return ret;
}
* If the caller wants a certain signal mask to be set during the wait,
* we apply it here.
*/
- if (sigmask) {
- if (sigsetsize != sizeof(sigset_t))
- return -EINVAL;
- if (copy_from_user(&ksigmask, sigmask, sizeof(ksigmask)))
- return -EFAULT;
- sigsaved = current->blocked;
- set_current_blocked(&ksigmask);
- }
+ error = set_user_sigmask(sigmask, &ksigmask, &sigsaved, sigsetsize);
+ if (error)
+ return error;
error = do_epoll_wait(epfd, events, maxevents, timeout);
- /*
- * If we changed the signal mask, we need to restore the original one.
- * In case we've got a signal while waiting, we do not restore the
- * signal mask yet, and we allow do_signal() to deliver the signal on
- * the way back to userspace, before the signal mask is restored.
- */
- if (sigmask) {
- if (error == -EINTR) {
- memcpy(¤t->saved_sigmask, &sigsaved,
- sizeof(sigsaved));
- set_restore_sigmask();
- } else
- set_current_blocked(&sigsaved);
- }
+ restore_user_sigmask(sigmask, &sigsaved);
return error;
}
* If the caller wants a certain signal mask to be set during the wait,
* we apply it here.
*/
- if (sigmask) {
- if (sigsetsize != sizeof(compat_sigset_t))
- return -EINVAL;
- if (get_compat_sigset(&ksigmask, sigmask))
- return -EFAULT;
- sigsaved = current->blocked;
- set_current_blocked(&ksigmask);
- }
+ err = set_compat_user_sigmask(sigmask, &ksigmask, &sigsaved, sigsetsize);
+ if (err)
+ return err;
err = do_epoll_wait(epfd, events, maxevents, timeout);
- /*
- * If we changed the signal mask, we need to restore the original one.
- * In case we've got a signal while waiting, we do not restore the
- * signal mask yet, and we allow do_signal() to deliver the signal on
- * the way back to userspace, before the signal mask is restored.
- */
- if (sigmask) {
- if (err == -EINTR) {
- memcpy(¤t->saved_sigmask, &sigsaved,
- sizeof(sigsaved));
- set_restore_sigmask();
- } else
- set_current_blocked(&sigsaved);
- }
+ restore_user_sigmask(sigmask, &sigsaved);
return err;
}
*/
struct timespec64 current_time(struct inode *inode)
{
- struct timespec64 now = current_kernel_time64();
+ struct timespec64 now;
+
+ ktime_get_coarse_real_ts64(&now);
if (unlikely(!inode->i_sb)) {
WARN(1, "current_time() called with uninitialized super_block in the inode");
return 0;
}
+enum poll_time_type {
+ PT_TIMEVAL = 0,
+ PT_OLD_TIMEVAL = 1,
+ PT_TIMESPEC = 2,
+ PT_OLD_TIMESPEC = 3,
+};
+
static int poll_select_copy_remaining(struct timespec64 *end_time,
void __user *p,
- int timeval, int ret)
+ enum poll_time_type pt_type, int ret)
{
struct timespec64 rts;
- struct timeval rtv;
if (!p)
return ret;
rts.tv_sec = rts.tv_nsec = 0;
- if (timeval) {
- if (sizeof(rtv) > sizeof(rtv.tv_sec) + sizeof(rtv.tv_usec))
- memset(&rtv, 0, sizeof(rtv));
- rtv.tv_sec = rts.tv_sec;
- rtv.tv_usec = rts.tv_nsec / NSEC_PER_USEC;
+ switch (pt_type) {
+ case PT_TIMEVAL:
+ {
+ struct timeval rtv;
- if (!copy_to_user(p, &rtv, sizeof(rtv)))
+ if (sizeof(rtv) > sizeof(rtv.tv_sec) + sizeof(rtv.tv_usec))
+ memset(&rtv, 0, sizeof(rtv));
+ rtv.tv_sec = rts.tv_sec;
+ rtv.tv_usec = rts.tv_nsec / NSEC_PER_USEC;
+ if (!copy_to_user(p, &rtv, sizeof(rtv)))
+ return ret;
+ }
+ break;
+ case PT_OLD_TIMEVAL:
+ {
+ struct old_timeval32 rtv;
+
+ rtv.tv_sec = rts.tv_sec;
+ rtv.tv_usec = rts.tv_nsec / NSEC_PER_USEC;
+ if (!copy_to_user(p, &rtv, sizeof(rtv)))
+ return ret;
+ }
+ break;
+ case PT_TIMESPEC:
+ if (!put_timespec64(&rts, p))
return ret;
-
- } else if (!put_timespec64(&rts, p))
- return ret;
-
+ break;
+ case PT_OLD_TIMESPEC:
+ if (!put_old_timespec32(&rts, p))
+ return ret;
+ break;
+ default:
+ BUG();
+ }
/*
* If an application puts its timeval in read-only memory, we
* don't want the Linux-specific update to the timeval to
}
ret = core_sys_select(n, inp, outp, exp, to);
- ret = poll_select_copy_remaining(&end_time, tvp, 1, ret);
+ ret = poll_select_copy_remaining(&end_time, tvp, PT_TIMEVAL, ret);
return ret;
}
}
static long do_pselect(int n, fd_set __user *inp, fd_set __user *outp,
- fd_set __user *exp, struct timespec __user *tsp,
- const sigset_t __user *sigmask, size_t sigsetsize)
+ fd_set __user *exp, void __user *tsp,
+ const sigset_t __user *sigmask, size_t sigsetsize,
+ enum poll_time_type type)
{
sigset_t ksigmask, sigsaved;
struct timespec64 ts, end_time, *to = NULL;
int ret;
if (tsp) {
- if (get_timespec64(&ts, tsp))
- return -EFAULT;
+ switch (type) {
+ case PT_TIMESPEC:
+ if (get_timespec64(&ts, tsp))
+ return -EFAULT;
+ break;
+ case PT_OLD_TIMESPEC:
+ if (get_old_timespec32(&ts, tsp))
+ return -EFAULT;
+ break;
+ default:
+ BUG();
+ }
to = &end_time;
if (poll_select_set_timeout(to, ts.tv_sec, ts.tv_nsec))
return -EINVAL;
}
- if (sigmask) {
- /* XXX: Don't preclude handling different sized sigset_t's. */
- if (sigsetsize != sizeof(sigset_t))
- return -EINVAL;
- if (copy_from_user(&ksigmask, sigmask, sizeof(ksigmask)))
- return -EFAULT;
-
- sigdelsetmask(&ksigmask, sigmask(SIGKILL)|sigmask(SIGSTOP));
- sigprocmask(SIG_SETMASK, &ksigmask, &sigsaved);
- }
+ ret = set_user_sigmask(sigmask, &ksigmask, &sigsaved, sigsetsize);
+ if (ret)
+ return ret;
ret = core_sys_select(n, inp, outp, exp, to);
- ret = poll_select_copy_remaining(&end_time, tsp, 0, ret);
+ ret = poll_select_copy_remaining(&end_time, tsp, type, ret);
- if (ret == -ERESTARTNOHAND) {
- /*
- * Don't restore the signal mask yet. Let do_signal() deliver
- * the signal on the way back to userspace, before the signal
- * mask is restored.
- */
- if (sigmask) {
- memcpy(¤t->saved_sigmask, &sigsaved,
- sizeof(sigsaved));
- set_restore_sigmask();
- }
- } else if (sigmask)
- sigprocmask(SIG_SETMASK, &sigsaved, NULL);
+ restore_user_sigmask(sigmask, &sigsaved);
return ret;
}
* the sigset size.
*/
SYSCALL_DEFINE6(pselect6, int, n, fd_set __user *, inp, fd_set __user *, outp,
- fd_set __user *, exp, struct timespec __user *, tsp,
+ fd_set __user *, exp, struct __kernel_timespec __user *, tsp,
void __user *, sig)
{
size_t sigsetsize = 0;
return -EFAULT;
}
- return do_pselect(n, inp, outp, exp, tsp, up, sigsetsize);
+ return do_pselect(n, inp, outp, exp, tsp, up, sigsetsize, PT_TIMESPEC);
}
+#if defined(CONFIG_COMPAT_32BIT_TIME) && !defined(CONFIG_64BIT)
+
+SYSCALL_DEFINE6(pselect6_time32, int, n, fd_set __user *, inp, fd_set __user *, outp,
+ fd_set __user *, exp, struct old_timespec32 __user *, tsp,
+ void __user *, sig)
+{
+ size_t sigsetsize = 0;
+ sigset_t __user *up = NULL;
+
+ if (sig) {
+ if (!access_ok(VERIFY_READ, sig, sizeof(void *)+sizeof(size_t))
+ || __get_user(up, (sigset_t __user * __user *)sig)
+ || __get_user(sigsetsize,
+ (size_t __user *)(sig+sizeof(void *))))
+ return -EFAULT;
+ }
+
+ return do_pselect(n, inp, outp, exp, tsp, up, sigsetsize, PT_OLD_TIMESPEC);
+}
+
+#endif
+
#ifdef __ARCH_WANT_SYS_OLD_SELECT
struct sel_arg_struct {
unsigned long n;
}
SYSCALL_DEFINE5(ppoll, struct pollfd __user *, ufds, unsigned int, nfds,
- struct timespec __user *, tsp, const sigset_t __user *, sigmask,
+ struct __kernel_timespec __user *, tsp, const sigset_t __user *, sigmask,
size_t, sigsetsize)
{
sigset_t ksigmask, sigsaved;
return -EINVAL;
}
- if (sigmask) {
- /* XXX: Don't preclude handling different sized sigset_t's. */
- if (sigsetsize != sizeof(sigset_t))
- return -EINVAL;
- if (copy_from_user(&ksigmask, sigmask, sizeof(ksigmask)))
- return -EFAULT;
-
- sigdelsetmask(&ksigmask, sigmask(SIGKILL)|sigmask(SIGSTOP));
- sigprocmask(SIG_SETMASK, &ksigmask, &sigsaved);
- }
+ ret = set_user_sigmask(sigmask, &ksigmask, &sigsaved, sigsetsize);
+ if (ret)
+ return ret;
ret = do_sys_poll(ufds, nfds, to);
+ restore_user_sigmask(sigmask, &sigsaved);
+
/* We can restart this syscall, usually */
- if (ret == -EINTR) {
- /*
- * Don't restore the signal mask yet. Let do_signal() deliver
- * the signal on the way back to userspace, before the signal
- * mask is restored.
- */
- if (sigmask) {
- memcpy(¤t->saved_sigmask, &sigsaved,
- sizeof(sigsaved));
- set_restore_sigmask();
- }
+ if (ret == -EINTR)
ret = -ERESTARTNOHAND;
- } else if (sigmask)
- sigprocmask(SIG_SETMASK, &sigsaved, NULL);
- ret = poll_select_copy_remaining(&end_time, tsp, 0, ret);
+ ret = poll_select_copy_remaining(&end_time, tsp, PT_TIMESPEC, ret);
return ret;
}
-#ifdef CONFIG_COMPAT
-#define __COMPAT_NFDBITS (8 * sizeof(compat_ulong_t))
+#if defined(CONFIG_COMPAT_32BIT_TIME) && !defined(CONFIG_64BIT)
-static
-int compat_poll_select_copy_remaining(struct timespec64 *end_time, void __user *p,
- int timeval, int ret)
+SYSCALL_DEFINE5(ppoll_time32, struct pollfd __user *, ufds, unsigned int, nfds,
+ struct old_timespec32 __user *, tsp, const sigset_t __user *, sigmask,
+ size_t, sigsetsize)
{
- struct timespec64 ts;
+ sigset_t ksigmask, sigsaved;
+ struct timespec64 ts, end_time, *to = NULL;
+ int ret;
- if (!p)
- return ret;
+ if (tsp) {
+ if (get_old_timespec32(&ts, tsp))
+ return -EFAULT;
- if (current->personality & STICKY_TIMEOUTS)
- goto sticky;
+ to = &end_time;
+ if (poll_select_set_timeout(to, ts.tv_sec, ts.tv_nsec))
+ return -EINVAL;
+ }
- /* No update for zero timeout */
- if (!end_time->tv_sec && !end_time->tv_nsec)
+ ret = set_user_sigmask(sigmask, &ksigmask, &sigsaved, sigsetsize);
+ if (ret)
return ret;
- ktime_get_ts64(&ts);
- ts = timespec64_sub(*end_time, ts);
- if (ts.tv_sec < 0)
- ts.tv_sec = ts.tv_nsec = 0;
+ ret = do_sys_poll(ufds, nfds, to);
- if (timeval) {
- struct old_timeval32 rtv;
+ restore_user_sigmask(sigmask, &sigsaved);
- rtv.tv_sec = ts.tv_sec;
- rtv.tv_usec = ts.tv_nsec / NSEC_PER_USEC;
+ /* We can restart this syscall, usually */
+ if (ret == -EINTR)
+ ret = -ERESTARTNOHAND;
- if (!copy_to_user(p, &rtv, sizeof(rtv)))
- return ret;
- } else {
- if (!put_old_timespec32(&ts, p))
- return ret;
- }
- /*
- * If an application puts its timeval in read-only memory, we
- * don't want the Linux-specific update to the timeval to
- * cause a fault after the select has completed
- * successfully. However, because we're not updating the
- * timeval, we can't restart the system call.
- */
+ ret = poll_select_copy_remaining(&end_time, tsp, PT_OLD_TIMESPEC, ret);
-sticky:
- if (ret == -ERESTARTNOHAND)
- ret = -EINTR;
return ret;
}
+#endif
+
+#ifdef CONFIG_COMPAT
+#define __COMPAT_NFDBITS (8 * sizeof(compat_ulong_t))
/*
* Ooo, nasty. We need here to frob 32-bit unsigned longs to
}
ret = compat_core_sys_select(n, inp, outp, exp, to);
- ret = compat_poll_select_copy_remaining(&end_time, tvp, 1, ret);
+ ret = poll_select_copy_remaining(&end_time, tvp, PT_OLD_TIMEVAL, ret);
return ret;
}
static long do_compat_pselect(int n, compat_ulong_t __user *inp,
compat_ulong_t __user *outp, compat_ulong_t __user *exp,
- struct old_timespec32 __user *tsp, compat_sigset_t __user *sigmask,
- compat_size_t sigsetsize)
+ void __user *tsp, compat_sigset_t __user *sigmask,
+ compat_size_t sigsetsize, enum poll_time_type type)
{
sigset_t ksigmask, sigsaved;
struct timespec64 ts, end_time, *to = NULL;
int ret;
if (tsp) {
- if (get_old_timespec32(&ts, tsp))
- return -EFAULT;
+ switch (type) {
+ case PT_OLD_TIMESPEC:
+ if (get_old_timespec32(&ts, tsp))
+ return -EFAULT;
+ break;
+ case PT_TIMESPEC:
+ if (get_timespec64(&ts, tsp))
+ return -EFAULT;
+ break;
+ default:
+ BUG();
+ }
to = &end_time;
if (poll_select_set_timeout(to, ts.tv_sec, ts.tv_nsec))
return -EINVAL;
}
- if (sigmask) {
- if (sigsetsize != sizeof(compat_sigset_t))
- return -EINVAL;
- if (get_compat_sigset(&ksigmask, sigmask))
- return -EFAULT;
-
- sigdelsetmask(&ksigmask, sigmask(SIGKILL)|sigmask(SIGSTOP));
- sigprocmask(SIG_SETMASK, &ksigmask, &sigsaved);
- }
+ ret = set_compat_user_sigmask(sigmask, &ksigmask, &sigsaved, sigsetsize);
+ if (ret)
+ return ret;
ret = compat_core_sys_select(n, inp, outp, exp, to);
- ret = compat_poll_select_copy_remaining(&end_time, tsp, 0, ret);
+ ret = poll_select_copy_remaining(&end_time, tsp, type, ret);
- if (ret == -ERESTARTNOHAND) {
- /*
- * Don't restore the signal mask yet. Let do_signal() deliver
- * the signal on the way back to userspace, before the signal
- * mask is restored.
- */
- if (sigmask) {
- memcpy(¤t->saved_sigmask, &sigsaved,
- sizeof(sigsaved));
- set_restore_sigmask();
- }
- } else if (sigmask)
- sigprocmask(SIG_SETMASK, &sigsaved, NULL);
+ restore_user_sigmask(sigmask, &sigsaved);
return ret;
}
+COMPAT_SYSCALL_DEFINE6(pselect6_time64, int, n, compat_ulong_t __user *, inp,
+ compat_ulong_t __user *, outp, compat_ulong_t __user *, exp,
+ struct __kernel_timespec __user *, tsp, void __user *, sig)
+{
+ compat_size_t sigsetsize = 0;
+ compat_uptr_t up = 0;
+
+ if (sig) {
+ if (!access_ok(VERIFY_READ, sig,
+ sizeof(compat_uptr_t)+sizeof(compat_size_t)) ||
+ __get_user(up, (compat_uptr_t __user *)sig) ||
+ __get_user(sigsetsize,
+ (compat_size_t __user *)(sig+sizeof(up))))
+ return -EFAULT;
+ }
+
+ return do_compat_pselect(n, inp, outp, exp, tsp, compat_ptr(up),
+ sigsetsize, PT_TIMESPEC);
+}
+
+#if defined(CONFIG_COMPAT_32BIT_TIME)
+
COMPAT_SYSCALL_DEFINE6(pselect6, int, n, compat_ulong_t __user *, inp,
compat_ulong_t __user *, outp, compat_ulong_t __user *, exp,
struct old_timespec32 __user *, tsp, void __user *, sig)
(compat_size_t __user *)(sig+sizeof(up))))
return -EFAULT;
}
+
return do_compat_pselect(n, inp, outp, exp, tsp, compat_ptr(up),
- sigsetsize);
+ sigsetsize, PT_OLD_TIMESPEC);
}
+#endif
+
+#if defined(CONFIG_COMPAT_32BIT_TIME)
COMPAT_SYSCALL_DEFINE5(ppoll, struct pollfd __user *, ufds,
unsigned int, nfds, struct old_timespec32 __user *, tsp,
const compat_sigset_t __user *, sigmask, compat_size_t, sigsetsize)
return -EINVAL;
}
- if (sigmask) {
- if (sigsetsize != sizeof(compat_sigset_t))
- return -EINVAL;
- if (get_compat_sigset(&ksigmask, sigmask))
+ ret = set_compat_user_sigmask(sigmask, &ksigmask, &sigsaved, sigsetsize);
+ if (ret)
+ return ret;
+
+ ret = do_sys_poll(ufds, nfds, to);
+
+ restore_user_sigmask(sigmask, &sigsaved);
+
+ /* We can restart this syscall, usually */
+ if (ret == -EINTR)
+ ret = -ERESTARTNOHAND;
+
+ ret = poll_select_copy_remaining(&end_time, tsp, PT_OLD_TIMESPEC, ret);
+
+ return ret;
+}
+#endif
+
+/* New compat syscall for 64 bit time_t*/
+COMPAT_SYSCALL_DEFINE5(ppoll_time64, struct pollfd __user *, ufds,
+ unsigned int, nfds, struct __kernel_timespec __user *, tsp,
+ const compat_sigset_t __user *, sigmask, compat_size_t, sigsetsize)
+{
+ sigset_t ksigmask, sigsaved;
+ struct timespec64 ts, end_time, *to = NULL;
+ int ret;
+
+ if (tsp) {
+ if (get_timespec64(&ts, tsp))
return -EFAULT;
- sigdelsetmask(&ksigmask, sigmask(SIGKILL)|sigmask(SIGSTOP));
- sigprocmask(SIG_SETMASK, &ksigmask, &sigsaved);
+ to = &end_time;
+ if (poll_select_set_timeout(to, ts.tv_sec, ts.tv_nsec))
+ return -EINVAL;
}
+ ret = set_compat_user_sigmask(sigmask, &ksigmask, &sigsaved, sigsetsize);
+ if (ret)
+ return ret;
+
ret = do_sys_poll(ufds, nfds, to);
+ restore_user_sigmask(sigmask, &sigsaved);
+
/* We can restart this syscall, usually */
- if (ret == -EINTR) {
- /*
- * Don't restore the signal mask yet. Let do_signal() deliver
- * the signal on the way back to userspace, before the signal
- * mask is restored.
- */
- if (sigmask) {
- memcpy(¤t->saved_sigmask, &sigsaved,
- sizeof(sigsaved));
- set_restore_sigmask();
- }
+ if (ret == -EINTR)
ret = -ERESTARTNOHAND;
- } else if (sigmask)
- sigprocmask(SIG_SETMASK, &sigsaved, NULL);
- ret = compat_poll_select_copy_remaining(&end_time, tsp, 0, ret);
+ ret = poll_select_copy_remaining(&end_time, tsp, PT_TIMESPEC, ret);
return ret;
}
+
#endif
compat_sigset_word sig[_COMPAT_NSIG_WORDS];
} compat_sigset_t;
+int set_compat_user_sigmask(const compat_sigset_t __user *usigmask,
+ sigset_t *set, sigset_t *oldset,
+ size_t sigsetsize);
+
struct compat_sigaction {
#ifndef __ARCH_HAS_IRIX_SIGACTION
compat_uptr_t sa_handler;
struct io_event __user *events,
struct old_timespec32 __user *timeout,
const struct __compat_aio_sigset __user *usig);
+asmlinkage long compat_sys_io_pgetevents_time64(compat_aio_context_t ctx_id,
+ compat_long_t min_nr,
+ compat_long_t nr,
+ struct io_event __user *events,
+ struct __kernel_timespec __user *timeout,
+ const struct __compat_aio_sigset __user *usig);
/* fs/cookies.c */
asmlinkage long compat_sys_lookup_dcookie(u32, u32, char __user *, compat_size_t);
compat_ulong_t __user *exp,
struct old_timespec32 __user *tsp,
void __user *sig);
+asmlinkage long compat_sys_pselect6_time64(int n, compat_ulong_t __user *inp,
+ compat_ulong_t __user *outp,
+ compat_ulong_t __user *exp,
+ struct __kernel_timespec __user *tsp,
+ void __user *sig);
asmlinkage long compat_sys_ppoll(struct pollfd __user *ufds,
unsigned int nfds,
struct old_timespec32 __user *tsp,
const compat_sigset_t __user *sigmask,
compat_size_t sigsetsize);
+asmlinkage long compat_sys_ppoll_time64(struct pollfd __user *ufds,
+ unsigned int nfds,
+ struct __kernel_timespec __user *tsp,
+ const compat_sigset_t __user *sigmask,
+ compat_size_t sigsetsize);
/* fs/signalfd.c */
asmlinkage long compat_sys_signalfd4(int ufd,
asmlinkage long compat_sys_rt_sigtimedwait(compat_sigset_t __user *uthese,
struct compat_siginfo __user *uinfo,
struct old_timespec32 __user *uts, compat_size_t sigsetsize);
+asmlinkage long compat_sys_rt_sigtimedwait_time64(compat_sigset_t __user *uthese,
+ struct compat_siginfo __user *uinfo,
+ struct __kernel_timespec __user *uts, compat_size_t sigsetsize);
asmlinkage long compat_sys_rt_sigqueueinfo(compat_pid_t pid, int sig,
struct compat_siginfo __user *uinfo);
/* No generic prototype for rt_sigreturn */
asmlinkage long compat_sys_rt_tgsigqueueinfo(compat_pid_t tgid,
compat_pid_t pid, int sig,
struct compat_siginfo __user *uinfo);
+asmlinkage long compat_sys_recvmmsg_time64(int fd, struct compat_mmsghdr __user *mmsg,
+ unsigned vlen, unsigned int flags,
+ struct __kernel_timespec __user *timeout);
asmlinkage long compat_sys_recvmmsg(int fd, struct compat_mmsghdr __user *mmsg,
unsigned vlen, unsigned int flags,
struct old_timespec32 __user *timeout);
struct mm_struct;
struct task_struct;
-extern int
-handle_futex_death(u32 __user *uaddr, struct task_struct *curr, int pi);
-
/*
* Futexes are matched on equal values of this key.
* The key type depends on whether it's a shared or private mapping.
long do_futex(u32 __user *uaddr, int op, u32 val, ktime_t *timeout,
u32 __user *uaddr2, u32 val2, u32 val3);
-#ifdef CONFIG_HAVE_FUTEX_CMPXCHG
-#define futex_cmpxchg_enabled 1
-#else
-extern int futex_cmpxchg_enabled;
-#endif
#else
static inline void exit_robust_list(struct task_struct *curr)
{
struct task_struct *p, enum pid_type type);
extern int __group_send_sig_info(int, struct kernel_siginfo *, struct task_struct *);
extern int sigprocmask(int, sigset_t *, sigset_t *);
+extern int set_user_sigmask(const sigset_t __user *usigmask, sigset_t *set,
+ sigset_t *oldset, size_t sigsetsize);
+extern void restore_user_sigmask(const void __user *usigmask,
+ sigset_t *sigsaved);
extern void set_current_blocked(sigset_t *);
extern void __set_current_blocked(const sigset_t *);
extern int show_unhandled_signals;
extern int move_addr_to_kernel(void __user *uaddr, int ulen, struct sockaddr_storage *kaddr);
extern int put_cmsg(struct msghdr*, int level, int type, int len, void *data);
-struct timespec64;
+struct __kernel_timespec;
+struct old_timespec32;
/* The __sys_...msg variants allow MSG_CMSG_COMPAT iff
* forbid_cmsg_compat==false
unsigned int flags, bool forbid_cmsg_compat);
extern long __sys_sendmsg(int fd, struct user_msghdr __user *msg,
unsigned int flags, bool forbid_cmsg_compat);
-extern int __sys_recvmmsg(int fd, struct mmsghdr __user *mmsg, unsigned int vlen,
- unsigned int flags, struct timespec64 *timeout);
+extern int __sys_recvmmsg(int fd, struct mmsghdr __user *mmsg,
+ unsigned int vlen, unsigned int flags,
+ struct __kernel_timespec __user *timeout,
+ struct old_timespec32 __user *timeout32);
extern int __sys_sendmmsg(int fd, struct mmsghdr __user *mmsg,
unsigned int vlen, unsigned int flags,
bool forbid_cmsg_compat);
long min_nr,
long nr,
struct io_event __user *events,
- struct timespec __user *timeout);
+ struct __kernel_timespec __user *timeout);
asmlinkage long sys_io_pgetevents(aio_context_t ctx_id,
long min_nr,
long nr,
struct io_event __user *events,
- struct timespec __user *timeout,
+ struct __kernel_timespec __user *timeout,
+ const struct __aio_sigset *sig);
+asmlinkage long sys_io_pgetevents_time32(aio_context_t ctx_id,
+ long min_nr,
+ long nr,
+ struct io_event __user *events,
+ struct old_timespec32 __user *timeout,
const struct __aio_sigset *sig);
/* fs/xattr.c */
/* fs/select.c */
asmlinkage long sys_pselect6(int, fd_set __user *, fd_set __user *,
- fd_set __user *, struct timespec __user *,
+ fd_set __user *, struct __kernel_timespec __user *,
+ void __user *);
+asmlinkage long sys_pselect6_time32(int, fd_set __user *, fd_set __user *,
+ fd_set __user *, struct old_timespec32 __user *,
void __user *);
asmlinkage long sys_ppoll(struct pollfd __user *, unsigned int,
- struct timespec __user *, const sigset_t __user *,
+ struct __kernel_timespec __user *, const sigset_t __user *,
+ size_t);
+asmlinkage long sys_ppoll_time32(struct pollfd __user *, unsigned int,
+ struct old_timespec32 __user *, const sigset_t __user *,
size_t);
/* fs/signalfd.c */
/* kernel/futex.c */
asmlinkage long sys_futex(u32 __user *uaddr, int op, u32 val,
- struct timespec __user *utime, u32 __user *uaddr2,
+ struct __kernel_timespec __user *utime, u32 __user *uaddr2,
u32 val3);
asmlinkage long sys_get_robust_list(int pid,
struct robust_list_head __user * __user *head_ptr,
siginfo_t __user *uinfo,
const struct __kernel_timespec __user *uts,
size_t sigsetsize);
+asmlinkage long sys_rt_sigtimedwait_time32(const sigset_t __user *uthese,
+ siginfo_t __user *uinfo,
+ const struct old_timespec32 __user *uts,
+ size_t sigsetsize);
asmlinkage long sys_rt_sigqueueinfo(pid_t pid, int sig, siginfo_t __user *uinfo);
/* kernel/sys.c */
asmlinkage long sys_recvmmsg(int fd, struct mmsghdr __user *msg,
unsigned int vlen, unsigned flags,
struct __kernel_timespec __user *timeout);
+asmlinkage long sys_recvmmsg_time32(int fd, struct mmsghdr __user *msg,
+ unsigned int vlen, unsigned flags,
+ struct old_timespec32 __user *timeout);
asmlinkage long sys_wait4(pid_t pid, int __user *stat_addr,
int options, struct rusage __user *ru);
return lhs->tv_nsec - rhs->tv_nsec;
}
-extern void set_normalized_timespec(struct timespec *ts, time_t sec, s64 nsec);
-
-static inline struct timespec timespec_add(struct timespec lhs,
- struct timespec rhs)
-{
- struct timespec ts_delta;
-
- set_normalized_timespec(&ts_delta, lhs.tv_sec + rhs.tv_sec,
- lhs.tv_nsec + rhs.tv_nsec);
- return ts_delta;
-}
-
-/*
- * sub = lhs - rhs, in normalized form
- */
-static inline struct timespec timespec_sub(struct timespec lhs,
- struct timespec rhs)
-{
- struct timespec ts_delta;
-
- set_normalized_timespec(&ts_delta, lhs.tv_sec - rhs.tv_sec,
- lhs.tv_nsec - rhs.tv_nsec);
- return ts_delta;
-}
-
/*
* Returns true if the timespec is norm, false if denorm:
*/
struct timespec64 *boot_offset);
extern int update_persistent_clock64(struct timespec64 now);
-/*
- * deprecated aliases, don't use in new code
- */
-#define getnstimeofday64(ts) ktime_get_real_ts64(ts)
-
-static inline struct timespec64 current_kernel_time64(void)
-{
- struct timespec64 ts;
-
- ktime_get_coarse_real_ts64(&ts);
-
- return ts;
-}
-
#endif
* over time so we can remove the file here.
*/
-static inline void do_gettimeofday(struct timeval *tv)
-{
- struct timespec64 now;
-
- ktime_get_real_ts64(&now);
- tv->tv_sec = now.tv_sec;
- tv->tv_usec = now.tv_nsec/1000;
-}
-
static inline unsigned long get_seconds(void)
{
return ktime_get_real_seconds();
*ts = timespec64_to_timespec(ts64);
}
-/*
- * Persistent clock related interfaces
- */
-extern void read_persistent_clock(struct timespec *ts);
-extern int update_persistent_clock(struct timespec now);
-
#endif
obj-$(CONFIG_STACKTRACE) += stacktrace.o
obj-y += time/
obj-$(CONFIG_FUTEX) += futex.o
-ifeq ($(CONFIG_COMPAT),y)
-obj-$(CONFIG_FUTEX) += futex_compat.o
-endif
obj-$(CONFIG_GENERIC_ISA_DMA) += dma.o
obj-$(CONFIG_SMP) += smp.o
ifneq ($(CONFIG_SMP),y)
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
+#include <linux/compat.h>
#include <linux/slab.h>
#include <linux/poll.h>
#include <linux/fs.h>
* double_lock_hb() and double_unlock_hb(), respectively.
*/
-#ifndef CONFIG_HAVE_FUTEX_CMPXCHG
-int __read_mostly futex_cmpxchg_enabled;
+#ifdef CONFIG_HAVE_FUTEX_CMPXCHG
+#define futex_cmpxchg_enabled 1
+#else
+static int __read_mostly futex_cmpxchg_enabled;
#endif
/*
* Process a futex-list entry, check whether it's owned by the
* dying task, and do notification if so:
*/
-int handle_futex_death(u32 __user *uaddr, struct task_struct *curr, int pi)
+static int handle_futex_death(u32 __user *uaddr, struct task_struct *curr, int pi)
{
u32 uval, uninitialized_var(nval), mval;
SYSCALL_DEFINE6(futex, u32 __user *, uaddr, int, op, u32, val,
- struct timespec __user *, utime, u32 __user *, uaddr2,
+ struct __kernel_timespec __user *, utime, u32 __user *, uaddr2,
u32, val3)
{
- struct timespec ts;
+ struct timespec64 ts;
ktime_t t, *tp = NULL;
u32 val2 = 0;
int cmd = op & FUTEX_CMD_MASK;
cmd == FUTEX_WAIT_REQUEUE_PI)) {
if (unlikely(should_fail_futex(!(op & FUTEX_PRIVATE_FLAG))))
return -EFAULT;
- if (copy_from_user(&ts, utime, sizeof(ts)) != 0)
+ if (get_timespec64(&ts, utime))
return -EFAULT;
- if (!timespec_valid(&ts))
+ if (!timespec64_valid(&ts))
return -EINVAL;
- t = timespec_to_ktime(ts);
+ t = timespec64_to_ktime(ts);
if (cmd == FUTEX_WAIT)
t = ktime_add_safe(ktime_get(), t);
tp = &t;
return do_futex(uaddr, op, val, tp, uaddr2, val2, val3);
}
+#ifdef CONFIG_COMPAT
+/*
+ * Fetch a robust-list pointer. Bit 0 signals PI futexes:
+ */
+static inline int
+compat_fetch_robust_entry(compat_uptr_t *uentry, struct robust_list __user **entry,
+ compat_uptr_t __user *head, unsigned int *pi)
+{
+ if (get_user(*uentry, head))
+ return -EFAULT;
+
+ *entry = compat_ptr((*uentry) & ~1);
+ *pi = (unsigned int)(*uentry) & 1;
+
+ return 0;
+}
+
+static void __user *futex_uaddr(struct robust_list __user *entry,
+ compat_long_t futex_offset)
+{
+ compat_uptr_t base = ptr_to_compat(entry);
+ void __user *uaddr = compat_ptr(base + futex_offset);
+
+ return uaddr;
+}
+
+/*
+ * Walk curr->robust_list (very carefully, it's a userspace list!)
+ * and mark any locks found there dead, and notify any waiters.
+ *
+ * We silently return on any sign of list-walking problem.
+ */
+void compat_exit_robust_list(struct task_struct *curr)
+{
+ struct compat_robust_list_head __user *head = curr->compat_robust_list;
+ struct robust_list __user *entry, *next_entry, *pending;
+ unsigned int limit = ROBUST_LIST_LIMIT, pi, pip;
+ unsigned int uninitialized_var(next_pi);
+ compat_uptr_t uentry, next_uentry, upending;
+ compat_long_t futex_offset;
+ int rc;
+
+ if (!futex_cmpxchg_enabled)
+ return;
+
+ /*
+ * Fetch the list head (which was registered earlier, via
+ * sys_set_robust_list()):
+ */
+ if (compat_fetch_robust_entry(&uentry, &entry, &head->list.next, &pi))
+ return;
+ /*
+ * Fetch the relative futex offset:
+ */
+ if (get_user(futex_offset, &head->futex_offset))
+ return;
+ /*
+ * Fetch any possibly pending lock-add first, and handle it
+ * if it exists:
+ */
+ if (compat_fetch_robust_entry(&upending, &pending,
+ &head->list_op_pending, &pip))
+ return;
+
+ next_entry = NULL; /* avoid warning with gcc */
+ while (entry != (struct robust_list __user *) &head->list) {
+ /*
+ * Fetch the next entry in the list before calling
+ * handle_futex_death:
+ */
+ rc = compat_fetch_robust_entry(&next_uentry, &next_entry,
+ (compat_uptr_t __user *)&entry->next, &next_pi);
+ /*
+ * A pending lock might already be on the list, so
+ * dont process it twice:
+ */
+ if (entry != pending) {
+ void __user *uaddr = futex_uaddr(entry, futex_offset);
+
+ if (handle_futex_death(uaddr, curr, pi))
+ return;
+ }
+ if (rc)
+ return;
+ uentry = next_uentry;
+ entry = next_entry;
+ pi = next_pi;
+ /*
+ * Avoid excessively long or circular lists:
+ */
+ if (!--limit)
+ break;
+
+ cond_resched();
+ }
+ if (pending) {
+ void __user *uaddr = futex_uaddr(pending, futex_offset);
+
+ handle_futex_death(uaddr, curr, pip);
+ }
+}
+
+COMPAT_SYSCALL_DEFINE2(set_robust_list,
+ struct compat_robust_list_head __user *, head,
+ compat_size_t, len)
+{
+ if (!futex_cmpxchg_enabled)
+ return -ENOSYS;
+
+ if (unlikely(len != sizeof(*head)))
+ return -EINVAL;
+
+ current->compat_robust_list = head;
+
+ return 0;
+}
+
+COMPAT_SYSCALL_DEFINE3(get_robust_list, int, pid,
+ compat_uptr_t __user *, head_ptr,
+ compat_size_t __user *, len_ptr)
+{
+ struct compat_robust_list_head __user *head;
+ unsigned long ret;
+ struct task_struct *p;
+
+ if (!futex_cmpxchg_enabled)
+ return -ENOSYS;
+
+ rcu_read_lock();
+
+ ret = -ESRCH;
+ if (!pid)
+ p = current;
+ else {
+ p = find_task_by_vpid(pid);
+ if (!p)
+ goto err_unlock;
+ }
+
+ ret = -EPERM;
+ if (!ptrace_may_access(p, PTRACE_MODE_READ_REALCREDS))
+ goto err_unlock;
+
+ head = p->compat_robust_list;
+ rcu_read_unlock();
+
+ if (put_user(sizeof(*head), len_ptr))
+ return -EFAULT;
+ return put_user(ptr_to_compat(head), head_ptr);
+
+err_unlock:
+ rcu_read_unlock();
+
+ return ret;
+}
+#endif /* CONFIG_COMPAT */
+
+#ifdef CONFIG_COMPAT_32BIT_TIME
+COMPAT_SYSCALL_DEFINE6(futex, u32 __user *, uaddr, int, op, u32, val,
+ struct old_timespec32 __user *, utime, u32 __user *, uaddr2,
+ u32, val3)
+{
+ struct timespec64 ts;
+ ktime_t t, *tp = NULL;
+ int val2 = 0;
+ int cmd = op & FUTEX_CMD_MASK;
+
+ if (utime && (cmd == FUTEX_WAIT || cmd == FUTEX_LOCK_PI ||
+ cmd == FUTEX_WAIT_BITSET ||
+ cmd == FUTEX_WAIT_REQUEUE_PI)) {
+ if (get_old_timespec32(&ts, utime))
+ return -EFAULT;
+ if (!timespec64_valid(&ts))
+ return -EINVAL;
+
+ t = timespec64_to_ktime(ts);
+ if (cmd == FUTEX_WAIT)
+ t = ktime_add_safe(ktime_get(), t);
+ tp = &t;
+ }
+ if (cmd == FUTEX_REQUEUE || cmd == FUTEX_CMP_REQUEUE ||
+ cmd == FUTEX_CMP_REQUEUE_PI || cmd == FUTEX_WAKE_OP)
+ val2 = (int) (unsigned long) utime;
+
+ return do_futex(uaddr, op, val, tp, uaddr2, val2, val3);
+}
+#endif /* CONFIG_COMPAT_32BIT_TIME */
+
static void __init futex_detect_cmpxchg(void)
{
#ifndef CONFIG_HAVE_FUTEX_CMPXCHG
+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0
-/*
- * linux/kernel/futex_compat.c
- *
- * Futex compatibililty routines.
- *
- * Copyright 2006, Red Hat, Inc., Ingo Molnar
- */
-
-#include <linux/linkage.h>
-#include <linux/compat.h>
-#include <linux/nsproxy.h>
-#include <linux/futex.h>
-#include <linux/ptrace.h>
-#include <linux/syscalls.h>
-
-#include <linux/uaccess.h>
-
-
-/*
- * Fetch a robust-list pointer. Bit 0 signals PI futexes:
- */
-static inline int
-fetch_robust_entry(compat_uptr_t *uentry, struct robust_list __user **entry,
- compat_uptr_t __user *head, unsigned int *pi)
-{
- if (get_user(*uentry, head))
- return -EFAULT;
-
- *entry = compat_ptr((*uentry) & ~1);
- *pi = (unsigned int)(*uentry) & 1;
-
- return 0;
-}
-
-static void __user *futex_uaddr(struct robust_list __user *entry,
- compat_long_t futex_offset)
-{
- compat_uptr_t base = ptr_to_compat(entry);
- void __user *uaddr = compat_ptr(base + futex_offset);
-
- return uaddr;
-}
-
-/*
- * Walk curr->robust_list (very carefully, it's a userspace list!)
- * and mark any locks found there dead, and notify any waiters.
- *
- * We silently return on any sign of list-walking problem.
- */
-void compat_exit_robust_list(struct task_struct *curr)
-{
- struct compat_robust_list_head __user *head = curr->compat_robust_list;
- struct robust_list __user *entry, *next_entry, *pending;
- unsigned int limit = ROBUST_LIST_LIMIT, pi, pip;
- unsigned int uninitialized_var(next_pi);
- compat_uptr_t uentry, next_uentry, upending;
- compat_long_t futex_offset;
- int rc;
-
- if (!futex_cmpxchg_enabled)
- return;
-
- /*
- * Fetch the list head (which was registered earlier, via
- * sys_set_robust_list()):
- */
- if (fetch_robust_entry(&uentry, &entry, &head->list.next, &pi))
- return;
- /*
- * Fetch the relative futex offset:
- */
- if (get_user(futex_offset, &head->futex_offset))
- return;
- /*
- * Fetch any possibly pending lock-add first, and handle it
- * if it exists:
- */
- if (fetch_robust_entry(&upending, &pending,
- &head->list_op_pending, &pip))
- return;
-
- next_entry = NULL; /* avoid warning with gcc */
- while (entry != (struct robust_list __user *) &head->list) {
- /*
- * Fetch the next entry in the list before calling
- * handle_futex_death:
- */
- rc = fetch_robust_entry(&next_uentry, &next_entry,
- (compat_uptr_t __user *)&entry->next, &next_pi);
- /*
- * A pending lock might already be on the list, so
- * dont process it twice:
- */
- if (entry != pending) {
- void __user *uaddr = futex_uaddr(entry, futex_offset);
-
- if (handle_futex_death(uaddr, curr, pi))
- return;
- }
- if (rc)
- return;
- uentry = next_uentry;
- entry = next_entry;
- pi = next_pi;
- /*
- * Avoid excessively long or circular lists:
- */
- if (!--limit)
- break;
-
- cond_resched();
- }
- if (pending) {
- void __user *uaddr = futex_uaddr(pending, futex_offset);
-
- handle_futex_death(uaddr, curr, pip);
- }
-}
-
-COMPAT_SYSCALL_DEFINE2(set_robust_list,
- struct compat_robust_list_head __user *, head,
- compat_size_t, len)
-{
- if (!futex_cmpxchg_enabled)
- return -ENOSYS;
-
- if (unlikely(len != sizeof(*head)))
- return -EINVAL;
-
- current->compat_robust_list = head;
-
- return 0;
-}
-
-COMPAT_SYSCALL_DEFINE3(get_robust_list, int, pid,
- compat_uptr_t __user *, head_ptr,
- compat_size_t __user *, len_ptr)
-{
- struct compat_robust_list_head __user *head;
- unsigned long ret;
- struct task_struct *p;
-
- if (!futex_cmpxchg_enabled)
- return -ENOSYS;
-
- rcu_read_lock();
-
- ret = -ESRCH;
- if (!pid)
- p = current;
- else {
- p = find_task_by_vpid(pid);
- if (!p)
- goto err_unlock;
- }
-
- ret = -EPERM;
- if (!ptrace_may_access(p, PTRACE_MODE_READ_REALCREDS))
- goto err_unlock;
-
- head = p->compat_robust_list;
- rcu_read_unlock();
-
- if (put_user(sizeof(*head), len_ptr))
- return -EFAULT;
- return put_user(ptr_to_compat(head), head_ptr);
-
-err_unlock:
- rcu_read_unlock();
-
- return ret;
-}
-
-COMPAT_SYSCALL_DEFINE6(futex, u32 __user *, uaddr, int, op, u32, val,
- struct old_timespec32 __user *, utime, u32 __user *, uaddr2,
- u32, val3)
-{
- struct timespec ts;
- ktime_t t, *tp = NULL;
- int val2 = 0;
- int cmd = op & FUTEX_CMD_MASK;
-
- if (utime && (cmd == FUTEX_WAIT || cmd == FUTEX_LOCK_PI ||
- cmd == FUTEX_WAIT_BITSET ||
- cmd == FUTEX_WAIT_REQUEUE_PI)) {
- if (compat_get_timespec(&ts, utime))
- return -EFAULT;
- if (!timespec_valid(&ts))
- return -EINVAL;
-
- t = timespec_to_ktime(ts);
- if (cmd == FUTEX_WAIT)
- t = ktime_add_safe(ktime_get(), t);
- tp = &t;
- }
- if (cmd == FUTEX_REQUEUE || cmd == FUTEX_CMP_REQUEUE ||
- cmd == FUTEX_CMP_REQUEUE_PI || cmd == FUTEX_WAKE_OP)
- val2 = (int) (unsigned long) utime;
-
- return do_futex(uaddr, op, val, tp, uaddr2, val2, val3);
-}
}
EXPORT_SYMBOL(sigprocmask);
+/*
+ * The api helps set app-provided sigmasks.
+ *
+ * This is useful for syscalls such as ppoll, pselect, io_pgetevents and
+ * epoll_pwait where a new sigmask is passed from userland for the syscalls.
+ */
+int set_user_sigmask(const sigset_t __user *usigmask, sigset_t *set,
+ sigset_t *oldset, size_t sigsetsize)
+{
+ if (!usigmask)
+ return 0;
+
+ if (sigsetsize != sizeof(sigset_t))
+ return -EINVAL;
+ if (copy_from_user(set, usigmask, sizeof(sigset_t)))
+ return -EFAULT;
+
+ *oldset = current->blocked;
+ set_current_blocked(set);
+
+ return 0;
+}
+EXPORT_SYMBOL(set_user_sigmask);
+
+#ifdef CONFIG_COMPAT
+int set_compat_user_sigmask(const compat_sigset_t __user *usigmask,
+ sigset_t *set, sigset_t *oldset,
+ size_t sigsetsize)
+{
+ if (!usigmask)
+ return 0;
+
+ if (sigsetsize != sizeof(compat_sigset_t))
+ return -EINVAL;
+ if (get_compat_sigset(set, usigmask))
+ return -EFAULT;
+
+ *oldset = current->blocked;
+ set_current_blocked(set);
+
+ return 0;
+}
+EXPORT_SYMBOL(set_compat_user_sigmask);
+#endif
+
+/*
+ * restore_user_sigmask:
+ * usigmask: sigmask passed in from userland.
+ * sigsaved: saved sigmask when the syscall started and changed the sigmask to
+ * usigmask.
+ *
+ * This is useful for syscalls such as ppoll, pselect, io_pgetevents and
+ * epoll_pwait where a new sigmask is passed in from userland for the syscalls.
+ */
+void restore_user_sigmask(const void __user *usigmask, sigset_t *sigsaved)
+{
+
+ if (!usigmask)
+ return;
+ /*
+ * When signals are pending, do not restore them here.
+ * Restoring sigmask here can lead to delivering signals that the above
+ * syscalls are intended to block because of the sigmask passed in.
+ */
+ if (signal_pending(current)) {
+ current->saved_sigmask = *sigsaved;
+ set_restore_sigmask();
+ return;
+ }
+
+ /*
+ * This is needed because the fast syscall return path does not restore
+ * saved_sigmask when signals are not pending.
+ */
+ set_current_blocked(sigsaved);
+}
+EXPORT_SYMBOL(restore_user_sigmask);
+
/**
* sys_rt_sigprocmask - change the list of currently blocked signals
* @how: whether to add, remove, or set signals
return ret;
}
+#ifdef CONFIG_COMPAT_32BIT_TIME
+SYSCALL_DEFINE4(rt_sigtimedwait_time32, const sigset_t __user *, uthese,
+ siginfo_t __user *, uinfo,
+ const struct old_timespec32 __user *, uts,
+ size_t, sigsetsize)
+{
+ sigset_t these;
+ struct timespec64 ts;
+ kernel_siginfo_t info;
+ int ret;
+
+ if (sigsetsize != sizeof(sigset_t))
+ return -EINVAL;
+
+ if (copy_from_user(&these, uthese, sizeof(these)))
+ return -EFAULT;
+
+ if (uts) {
+ if (get_old_timespec32(&ts, uts))
+ return -EFAULT;
+ }
+
+ ret = do_sigtimedwait(&these, &info, uts ? &ts : NULL);
+
+ if (ret > 0 && uinfo) {
+ if (copy_siginfo_to_user(uinfo, &info))
+ ret = -EFAULT;
+ }
+
+ return ret;
+}
+#endif
+
#ifdef CONFIG_COMPAT
+COMPAT_SYSCALL_DEFINE4(rt_sigtimedwait_time64, compat_sigset_t __user *, uthese,
+ struct compat_siginfo __user *, uinfo,
+ struct __kernel_timespec __user *, uts, compat_size_t, sigsetsize)
+{
+ sigset_t s;
+ struct timespec64 t;
+ kernel_siginfo_t info;
+ long ret;
+
+ if (sigsetsize != sizeof(sigset_t))
+ return -EINVAL;
+
+ if (get_compat_sigset(&s, uthese))
+ return -EFAULT;
+
+ if (uts) {
+ if (get_timespec64(&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_COMPAT_32BIT_TIME
COMPAT_SYSCALL_DEFINE4(rt_sigtimedwait, compat_sigset_t __user *, uthese,
struct compat_siginfo __user *, uinfo,
struct old_timespec32 __user *, uts, compat_size_t, sigsetsize)
return ret;
}
#endif
+#endif
/**
* sys_kill - send a signal to a process
COND_SYSCALL(perf_event_open);
COND_SYSCALL(accept4);
COND_SYSCALL(recvmmsg);
+COND_SYSCALL(recvmmsg_time32);
COND_SYSCALL_COMPAT(recvmmsg);
+COND_SYSCALL_COMPAT(recvmmsg_time64);
/*
* Architecture specific syscalls: see further below
}
#ifdef CONFIG_GENERIC_CMOS_UPDATE
-int __weak update_persistent_clock(struct timespec now)
-{
- return -ENODEV;
-}
-
int __weak update_persistent_clock64(struct timespec64 now64)
{
- struct timespec now;
-
- now = timespec64_to_timespec(now64);
- return update_persistent_clock(now);
+ return -ENODEV;
}
#endif
}
EXPORT_SYMBOL(mktime64);
-/**
- * set_normalized_timespec - set timespec sec and nsec parts and normalize
- *
- * @ts: pointer to timespec variable to be set
- * @sec: seconds to set
- * @nsec: nanoseconds to set
- *
- * Set seconds and nanoseconds field of a timespec variable and
- * normalize to the timespec storage format
- *
- * Note: The tv_nsec part is always in the range of
- * 0 <= tv_nsec < NSEC_PER_SEC
- * For negative values only the tv_sec field is negative !
- */
-void set_normalized_timespec(struct timespec *ts, time_t sec, s64 nsec)
-{
- while (nsec >= NSEC_PER_SEC) {
- /*
- * The following asm() prevents the compiler from
- * optimising this loop into a modulo operation. See
- * also __iter_div_u64_rem() in include/linux/time.h
- */
- asm("" : "+rm"(nsec));
- nsec -= NSEC_PER_SEC;
- ++sec;
- }
- while (nsec < 0) {
- asm("" : "+rm"(nsec));
- nsec += NSEC_PER_SEC;
- --sec;
- }
- ts->tv_sec = sec;
- ts->tv_nsec = nsec;
-}
-EXPORT_SYMBOL(set_normalized_timespec);
-
/**
* ns_to_timespec - Convert nanoseconds to timespec
* @nsec: the nanoseconds value to be converted
}
/**
- * read_persistent_clock - Return time from the persistent clock.
+ * read_persistent_clock64 - Return time from the persistent clock.
*
* Weak dummy function for arches that do not yet support it.
* Reads the time from the battery backed persistent clock.
*
* XXX - Do be sure to remove it once all arches implement it.
*/
-void __weak read_persistent_clock(struct timespec *ts)
+void __weak read_persistent_clock64(struct timespec64 *ts)
{
ts->tv_sec = 0;
ts->tv_nsec = 0;
}
-void __weak read_persistent_clock64(struct timespec64 *ts64)
-{
- struct timespec ts;
-
- read_persistent_clock(&ts);
- *ts64 = timespec_to_timespec64(ts);
-}
-
/**
* read_persistent_wall_and_boot_offset - Read persistent clock, and also offset
* from the boot.
return __compat_sys_recvfrom(fd, buf, len, flags, addr, addrlen);
}
-static int __compat_sys_recvmmsg(int fd, struct compat_mmsghdr __user *mmsg,
- unsigned int vlen, unsigned int flags,
- struct old_timespec32 __user *timeout)
+COMPAT_SYSCALL_DEFINE5(recvmmsg_time64, int, fd, struct compat_mmsghdr __user *, mmsg,
+ unsigned int, vlen, unsigned int, flags,
+ struct __kernel_timespec __user *, timeout)
{
- int datagrams;
- struct timespec64 ktspec;
-
- if (timeout == NULL)
- return __sys_recvmmsg(fd, (struct mmsghdr __user *)mmsg, vlen,
- flags | MSG_CMSG_COMPAT, NULL);
-
- if (compat_get_timespec64(&ktspec, timeout))
- return -EFAULT;
-
- datagrams = __sys_recvmmsg(fd, (struct mmsghdr __user *)mmsg, vlen,
- flags | MSG_CMSG_COMPAT, &ktspec);
- if (datagrams > 0 && compat_put_timespec64(&ktspec, timeout))
- datagrams = -EFAULT;
-
- return datagrams;
+ return __sys_recvmmsg(fd, (struct mmsghdr __user *)mmsg, vlen,
+ flags | MSG_CMSG_COMPAT, timeout, NULL);
}
+#ifdef CONFIG_COMPAT_32BIT_TIME
COMPAT_SYSCALL_DEFINE5(recvmmsg, int, fd, struct compat_mmsghdr __user *, mmsg,
unsigned int, vlen, unsigned int, flags,
struct old_timespec32 __user *, timeout)
{
- return __compat_sys_recvmmsg(fd, mmsg, vlen, flags, timeout);
+ return __sys_recvmmsg(fd, (struct mmsghdr __user *)mmsg, vlen,
+ flags | MSG_CMSG_COMPAT, NULL, timeout);
}
+#endif
COMPAT_SYSCALL_DEFINE2(socketcall, int, call, u32 __user *, args)
{
ret = __compat_sys_recvmsg(a0, compat_ptr(a1), a[2]);
break;
case SYS_RECVMMSG:
- ret = __compat_sys_recvmmsg(a0, compat_ptr(a1), a[2], a[3],
- compat_ptr(a[4]));
+ ret = __sys_recvmmsg(a0, compat_ptr(a1), a[2],
+ a[3] | MSG_CMSG_COMPAT, NULL,
+ compat_ptr(a[4]));
break;
case SYS_ACCEPT4:
ret = __sys_accept4(a0, compat_ptr(a1), compat_ptr(a[2]), a[3]);
* Linux recvmmsg interface
*/
-int __sys_recvmmsg(int fd, struct mmsghdr __user *mmsg, unsigned int vlen,
- unsigned int flags, struct timespec64 *timeout)
+static int do_recvmmsg(int fd, struct mmsghdr __user *mmsg,
+ unsigned int vlen, unsigned int flags,
+ struct timespec64 *timeout)
{
int fput_needed, err, datagrams;
struct socket *sock;
return datagrams;
}
-static int do_sys_recvmmsg(int fd, struct mmsghdr __user *mmsg,
- unsigned int vlen, unsigned int flags,
- struct __kernel_timespec __user *timeout)
+int __sys_recvmmsg(int fd, struct mmsghdr __user *mmsg,
+ unsigned int vlen, unsigned int flags,
+ struct __kernel_timespec __user *timeout,
+ struct old_timespec32 __user *timeout32)
{
int datagrams;
struct timespec64 timeout_sys;
- if (flags & MSG_CMSG_COMPAT)
- return -EINVAL;
-
- if (!timeout)
- return __sys_recvmmsg(fd, mmsg, vlen, flags, NULL);
+ if (timeout && get_timespec64(&timeout_sys, timeout))
+ return -EFAULT;
- if (get_timespec64(&timeout_sys, timeout))
+ if (timeout32 && get_old_timespec32(&timeout_sys, timeout32))
return -EFAULT;
- datagrams = __sys_recvmmsg(fd, mmsg, vlen, flags, &timeout_sys);
+ if (!timeout && !timeout32)
+ return do_recvmmsg(fd, mmsg, vlen, flags, NULL);
+
+ datagrams = do_recvmmsg(fd, mmsg, vlen, flags, &timeout_sys);
- if (datagrams > 0 && put_timespec64(&timeout_sys, timeout))
+ if (datagrams <= 0)
+ return datagrams;
+
+ if (timeout && put_timespec64(&timeout_sys, timeout))
+ datagrams = -EFAULT;
+
+ if (timeout32 && put_old_timespec32(&timeout_sys, timeout32))
datagrams = -EFAULT;
return datagrams;
unsigned int, vlen, unsigned int, flags,
struct __kernel_timespec __user *, timeout)
{
- return do_sys_recvmmsg(fd, mmsg, vlen, flags, timeout);
+ if (flags & MSG_CMSG_COMPAT)
+ return -EINVAL;
+
+ return __sys_recvmmsg(fd, mmsg, vlen, flags, timeout, NULL);
+}
+
+#ifdef CONFIG_COMPAT_32BIT_TIME
+SYSCALL_DEFINE5(recvmmsg_time32, int, fd, struct mmsghdr __user *, mmsg,
+ unsigned int, vlen, unsigned int, flags,
+ struct old_timespec32 __user *, timeout)
+{
+ if (flags & MSG_CMSG_COMPAT)
+ return -EINVAL;
+
+ return __sys_recvmmsg(fd, mmsg, vlen, flags, NULL, timeout);
}
+#endif
#ifdef __ARCH_WANT_SYS_SOCKETCALL
/* Argument list sizes for sys_socketcall */
a[2], true);
break;
case SYS_RECVMMSG:
- err = do_sys_recvmmsg(a0, (struct mmsghdr __user *)a1, a[2],
- a[3], (struct __kernel_timespec __user *)a[4]);
+ if (IS_ENABLED(CONFIG_64BIT) || !IS_ENABLED(CONFIG_64BIT_TIME))
+ err = __sys_recvmmsg(a0, (struct mmsghdr __user *)a1,
+ a[2], a[3],
+ (struct __kernel_timespec __user *)a[4],
+ NULL);
+ else
+ err = __sys_recvmmsg(a0, (struct mmsghdr __user *)a1,
+ a[2], a[3], NULL,
+ (struct old_timespec32 __user *)a[4]);
break;
case SYS_ACCEPT4:
err = __sys_accept4(a0, (struct sockaddr __user *)a1,
projects / thirdparty / kernel / stable.git / commitdiff
