All of lore.kernel.org
 help / color / mirror / Atom feed
From: Song Chen <chensong_2000@189.cn>
To: florian.bezdeka@siemens.com, xenomai@xenomai.org
Subject: [PATCH 1/3] y2038: cobalt/posix/mutex: Adding mutex_timedlock64
Date: Tue, 25 May 2021 11:03:05 +0800	[thread overview]
Message-ID: <1621911785-28585-1-git-send-email-chensong_2000@189.cn> (raw)

Add a syscall specific for mutex_timedlock with 64bit
time_t.

Signed-off-by: Song Chen <chensong_2000@189.cn>
---
 include/cobalt/uapi/syscall.h   |  1 +
 kernel/cobalt/posix/mutex.c     | 22 +++++++++++++++++++++-
 kernel/cobalt/posix/mutex.h     |  7 +++++++
 kernel/cobalt/posix/syscall32.c |  7 +++++++
 kernel/cobalt/posix/syscall32.h |  4 ++++
 5 files changed, 40 insertions(+), 1 deletion(-)

diff --git a/include/cobalt/uapi/syscall.h b/include/cobalt/uapi/syscall.h
index a2795a3..6fe57c7 100644
--- a/include/cobalt/uapi/syscall.h
+++ b/include/cobalt/uapi/syscall.h
@@ -128,6 +128,7 @@
 #define sc_cobalt_clock_nanosleep64		105
 #define sc_cobalt_clock_getres64		106
 #define sc_cobalt_clock_adjtime64		107
+#define sc_cobalt_mutex_timedlock64		108
 
 #define __NR_COBALT_SYSCALLS			128 /* Power of 2 */
 
diff --git a/kernel/cobalt/posix/mutex.c b/kernel/cobalt/posix/mutex.c
index 70fe796..1bd4703 100644
--- a/kernel/cobalt/posix/mutex.c
+++ b/kernel/cobalt/posix/mutex.c
@@ -21,6 +21,7 @@
 #include "mutex.h"
 #include "cond.h"
 #include "clock.h"
+#include <cobalt/kernel/time.h>
 
 static int cobalt_mutex_init_inner(struct cobalt_mutex_shadow *shadow,
 				   struct cobalt_mutex *mutex,
@@ -76,7 +77,7 @@ int __cobalt_mutex_acquire_unchecked(struct xnthread *cur,
 	int ret;
 
 	if (ts) {
-		if (ts->tv_nsec >= ONE_BILLION)
+		if (!timespec64_valid(ts))
 			return -EINVAL;
 		ret = xnsynch_acquire(&mutex->synchbase, ts2ns(ts) + 1, XN_REALTIME);
 	} else
@@ -359,6 +360,25 @@ COBALT_SYSCALL(mutex_timedlock, primary,
 	return __cobalt_mutex_timedlock_break(u_mx, u_ts, mutex_fetch_timeout);
 }
 
+static inline int mutex_fetch_timeout64(struct timespec64 *ts,
+				      const void __user *u_ts)
+{
+	return u_ts == NULL ? -EFAULT : cobalt_get_timespec64(ts, u_ts);
+}
+
+int __cobalt_mutex_timedlock64(struct cobalt_mutex_shadow __user *u_mx,
+				   const void __user *u_ts)
+{
+	return __cobalt_mutex_timedlock_break(u_mx, u_ts, mutex_fetch_timeout64);
+}
+
+COBALT_SYSCALL(mutex_timedlock64, primary,
+	       (struct cobalt_mutex_shadow __user *u_mx,
+		const struct __kernel_timespec __user *u_ts))
+{
+	return __cobalt_mutex_timedlock64(u_mx, u_ts);
+}
+
 COBALT_SYSCALL(mutex_unlock, nonrestartable,
 	       (struct cobalt_mutex_shadow __user *u_mx))
 {
diff --git a/kernel/cobalt/posix/mutex.h b/kernel/cobalt/posix/mutex.h
index d76f2a9..d7d4321 100644
--- a/kernel/cobalt/posix/mutex.h
+++ b/kernel/cobalt/posix/mutex.h
@@ -40,6 +40,9 @@ int __cobalt_mutex_timedlock_break(struct cobalt_mutex_shadow __user *u_mx,
 				   int (*fetch_timeout)(struct timespec64 *ts,
 							const void __user *u_ts));
 
+int __cobalt_mutex_timedlock64(struct cobalt_mutex_shadow __user *u_mx,
+				   const void __user *u_ts);
+
 int __cobalt_mutex_acquire_unchecked(struct xnthread *cur,
 				     struct cobalt_mutex *mutex,
 				     const struct timespec64 *ts);
@@ -64,6 +67,10 @@ COBALT_SYSCALL_DECL(mutex_timedlock,
 		    (struct cobalt_mutex_shadow __user *u_mx,
 		     const struct __user_old_timespec __user *u_ts));
 
+COBALT_SYSCALL(mutex_timedlock64, primary,
+	       (struct cobalt_mutex_shadow __user *u_mx,
+		const struct __kernel_timespec __user *u_ts));
+
 COBALT_SYSCALL_DECL(mutex_unlock,
 		    (struct cobalt_mutex_shadow __user *u_mx));
 
diff --git a/kernel/cobalt/posix/syscall32.c b/kernel/cobalt/posix/syscall32.c
index 9089f7d..46047be 100644
--- a/kernel/cobalt/posix/syscall32.c
+++ b/kernel/cobalt/posix/syscall32.c
@@ -268,6 +268,13 @@ COBALT_SYSCALL32emu(mutex_timedlock, primary,
 	return __cobalt_mutex_timedlock_break(u_mx, u_ts, sys32_fetch_timeout);
 }
 
+COBALT_SYSCALL32emu(mutex_timedlock64, primary,
+		    (struct cobalt_mutex_shadow __user *u_mx,
+		     const struct __kernel_timespec __user *u_ts))
+{
+	return __cobalt_mutex_timedlock64(u_mx, u_ts);
+}
+
 COBALT_SYSCALL32emu(cond_wait_prologue, nonrestartable,
 		    (struct cobalt_cond_shadow __user *u_cnd,
 		     struct cobalt_mutex_shadow __user *u_mx,
diff --git a/kernel/cobalt/posix/syscall32.h b/kernel/cobalt/posix/syscall32.h
index a4ce675..fcd47ca 100644
--- a/kernel/cobalt/posix/syscall32.h
+++ b/kernel/cobalt/posix/syscall32.h
@@ -98,6 +98,10 @@ COBALT_SYSCALL32emu_DECL(mutex_timedlock,
 			 (struct cobalt_mutex_shadow __user *u_mx,
 			  const struct old_timespec32 __user *u_ts));
 
+COBALT_SYSCALL32emu_DECL(mutex_timedlock64,
+			 (struct cobalt_mutex_shadow __user *u_mx,
+			  const struct __kernel_timespec __user *u_ts));
+
 COBALT_SYSCALL32emu_DECL(cond_wait_prologue,
 			 (struct cobalt_cond_shadow __user *u_cnd,
 			  struct cobalt_mutex_shadow __user *u_mx,
-- 
2.7.4



                 reply	other threads:[~2021-05-25  3:03 UTC|newest]

Thread overview: [no followups] expand[flat|nested]  mbox.gz  Atom feed

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=1621911785-28585-1-git-send-email-chensong_2000@189.cn \
    --to=chensong_2000@189.cn \
    --cc=florian.bezdeka@siemens.com \
    --cc=xenomai@xenomai.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.