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authorRoland McGrath <roland@gnu.org>1995-08-31 00:02:32 +0000
committerRoland McGrath <roland@gnu.org>1995-08-31 00:02:32 +0000
commita993273c0d4d1907028adee7a2ae012826fd316c (patch)
tree3b1f5f64ea2b79fff7a61283d1ae60ac9291f38f /hurd/intr-msg.c
parent18926cf415b65008c849b592209a85f733be39f7 (diff)
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Wed Aug 30 16:44:55 1995 Roland McGrath <roland@churchy.gnu.ai.mit.edu>
* sysdeps/mach/hurd/select.c: Deal with out of order replies during io_select request loop. Handle MACH_RCV_TIMED_OUT error from requests. * hurd/intr-msg.c: If the user passed the MACH_RCV_TIMEOUT option, distinguish MACH_RCV_TIMED_OUT from EINTR. * posix/glob.c (glob): Use realloc to extend strings for GLOB_MARK slash. (glob_in_dir): Don't allocate extra byte here. * sysdeps/i386/dl-machine.h (ELF_MACHINE_BEFORE_RTLD_RELOC): Decrement the DT_RELSZ value for the skipped reloc.
Diffstat (limited to 'hurd/intr-msg.c')
-rw-r--r--hurd/intr-msg.c21
1 files changed, 16 insertions, 5 deletions
diff --git a/hurd/intr-msg.c b/hurd/intr-msg.c
index 024cbfb..b345e72 100644
--- a/hurd/intr-msg.c
+++ b/hurd/intr-msg.c
@@ -35,6 +35,9 @@ _hurd_intr_rpc_mach_msg (mach_msg_header_t *msg,
{
struct hurd_sigstate *ss = _hurd_self_sigstate ();
error_t err;
+ /* Notice now if the user requested a timeout. OPTION may have the bit
+ added by interruption semantics, and we must distinguish. */
+ int user_timeout = option & MACH_RCV_TIMEOUT;
/* Tell the signal thread that we are doing an interruptible RPC on
this port. If we get a signal and should return EINTR, the signal
@@ -64,6 +67,15 @@ _hurd_intr_rpc_mach_msg (mach_msg_header_t *msg,
switch (err)
{
+ case MACH_RCV_TIMED_OUT:
+ if (user_timeout)
+ /* The real user RPC timed out. */
+ break;
+ else
+ /* The operation was supposedly interrupted, but still has
+ not returned. Declare it interrupted. */
+ goto interrupted;
+
case MACH_SEND_INTERRUPTED: /* RPC didn't get out. */
if (ss->intr_port != MACH_PORT_NULL)
/* If this signal was for us and it should interrupt calls, the
@@ -78,10 +90,7 @@ _hurd_intr_rpc_mach_msg (mach_msg_header_t *msg,
so the signal thread destroyed the reply port. */
/* FALLTHROUGH */
- case MACH_RCV_TIMED_OUT:
- /* The operation was supposedly interrupted, but still has
- not returned. Declare it interrupted. */
-
+ interrupted:
err = EINTR;
/* The EINTR return indicates cancellation, so clear the flag. */
@@ -95,7 +104,9 @@ _hurd_intr_rpc_mach_msg (mach_msg_header_t *msg,
/* This signal or cancellation was for us. We need to wait for
the reply, but not hang forever. */
option |= MACH_RCV_TIMEOUT;
- timeout = _hurd_interrupted_rpc_timeout;
+ /* Never decrease the user's timeout. */
+ if (!user_timeout || timeout > _hurd_interrupted_rpc_timeout)
+ timeout = _hurd_interrupted_rpc_timeout;
}
goto message; /* Retry the receive. */