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[hurd, commited] hurd: Evaluate fd before entering the critical section
From: |
Samuel Thibault |
Subject: |
[hurd, commited] hurd: Evaluate fd before entering the critical section |
Date: |
Tue, 7 Jul 2020 22:10:43 +0200 |
* sysdeps/hurd/include/hurd/fd.h (HURD_FD_PORT_USE_CANCEL): Evaluate fd
before calling _hurd_critical_section_lock.
---
sysdeps/hurd/include/hurd/fd.h | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/sysdeps/hurd/include/hurd/fd.h b/sysdeps/hurd/include/hurd/fd.h
index 3a6cdc7f36..1985b6fbb2 100644
--- a/sysdeps/hurd/include/hurd/fd.h
+++ b/sysdeps/hurd/include/hurd/fd.h
@@ -20,10 +20,11 @@ extern void _hurd_fd_port_use_cleanup (void *arg);
/* Like HURD_FD_PORT_USE, but cleans fd on cancel. */
#define HURD_FD_PORT_USE_CANCEL(fd, expr)
\
({ error_t __result; \
- void *__crit = _hurd_critical_section_lock (); \
struct _hurd_fd_port_use_data __d;
\
io_t port, ctty; \
+ void *__crit; \
__d.d = (fd); \
+ __crit = _hurd_critical_section_lock (); \
__spin_lock (&__d.d->port.lock); \
if (__d.d->port.port == MACH_PORT_NULL) \
{ \
--
2.27.0
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