[hurd,commited] hurd: Fix message reception for timer_thread
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Message ID 20200105171102.1478774-1-samuel.thibault@ens-lyon.org
State New
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Series
  • [hurd,commited] hurd: Fix message reception for timer_thread
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Commit Message

Samuel Thibault Jan. 5, 2020, 5:11 p.m. UTC
Without a proper size, we get MACH_RCV_TOO_LARGE instead of MACH_MSG_SUCCESS.

* sysdeps/mach/hurd/setitimer.c (timer_thread): Add return_code_type
field to received message, and set the receive size in __mach_msg call.
---
 sysdeps/mach/hurd/setitimer.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

Patch
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diff --git a/sysdeps/mach/hurd/setitimer.c b/sysdeps/mach/hurd/setitimer.c
index 4a6fd1fe33..b16f4ddd5d 100644
--- a/sysdeps/mach/hurd/setitimer.c
+++ b/sysdeps/mach/hurd/setitimer.c
@@ -80,6 +80,7 @@  timer_thread (void)
       struct
 	{
 	  mach_msg_header_t header;
+	  mach_msg_type_t return_code_type;
 	  error_t return_code;
 	} msg;
 
@@ -89,7 +90,7 @@  timer_thread (void)
 	 _hurd_itimerval.  */
       err = __mach_msg (&msg.header,
 			MACH_RCV_MSG|MACH_RCV_TIMEOUT|MACH_RCV_INTERRUPT,
-			0, 0, _hurd_itimer_port,
+			0, sizeof(msg), _hurd_itimer_port,
 			_hurd_itimerval.it_value.tv_sec * 1000
 			+ _hurd_itimerval.it_value.tv_usec / 1000,
 			MACH_PORT_NULL);