[tor-commits] [torsocks/master] Support the eventfd2(2) syscall.

[dgoulet@xxxxxxxxxxxxxx]

commit d6d79e31abe97b55ea944e13e134813aabe1bc86
Author: Yawning Angel <yawning@xxxxxxxxxxxxxxx>
Date:   Tue Apr 7 11:28:53 2015 +0000

    Support the eventfd2(2) syscall.
    
    Signed-off-by: Yawning Angel <yawning@xxxxxxxxxxxxxxx>
---
 src/common/compat.h |    5 +++++
 src/lib/syscall.c   |   17 +++++++++++++++++
 2 files changed, 22 insertions(+)

diff --git a/src/common/compat.h b/src/common/compat.h
index 8c3be78..187818c 100644
--- a/src/common/compat.h
+++ b/src/common/compat.h
@@ -118,6 +118,7 @@ void tsocks_mutex_unlock(tsocks_mutex_t *m);
  */
 
 #include <sys/epoll.h>
+#include <sys/eventfd.h>
 
 #ifndef __NR_epoll_create1
 #define __NR_epoll_create1 -128
@@ -131,11 +132,15 @@ void tsocks_mutex_unlock(tsocks_mutex_t *m);
 #ifndef __NR_epoll_ctl
 #define __NR_epoll_ctl -131
 #endif
+#ifndef __NR_eventfd2
+#define __NR_eventfd2 -132
+#endif
 
 #define TSOCKS_NR_EPOLL_CREATE1 __NR_epoll_create1
 #define TSOCKS_NR_EPOLL_WAIT    __NR_epoll_wait
 #define TSOCKS_NR_EPOLL_PWAIT   __NR_epoll_pwait
 #define TSOCKS_NR_EPOLL_CTL     __NR_epoll_ctl
+#define TSOCKS_NR_EVENTFD2      __NR_eventfd2
 
 #endif /* __linux__ */
 
diff --git a/src/lib/syscall.c b/src/lib/syscall.c
index c6585a8..55e2447 100644
--- a/src/lib/syscall.c
+++ b/src/lib/syscall.c
@@ -298,6 +298,20 @@ static LIBC_SYSCALL_RET_TYPE handle_epoll_ctl(va_list args)
 
 	return epoll_ctl(epfd, op, fd, event);
 }
+
+/*
+ * Handle eventfd2(2) syscall.
+ */
+static LIBC_SYSCALL_RET_TYPE handle_eventfd2(va_list args)
+{
+	unsigned int initval;
+	int flags;
+
+	initval = va_arg(args, __typeof__(initval));
+	flags = va_arg(args, __typeof__(flags));
+
+	return eventfd(initval, flags);
+}
 #endif /* __linux__ */
 
 /*
@@ -389,6 +403,9 @@ LIBC_SYSCALL_RET_TYPE tsocks_syscall(long int number, va_list args)
 	case TSOCKS_NR_EPOLL_CTL:
 		ret = handle_epoll_ctl(args);
 		break;
+	case TSOCKS_NR_EVENTFD2:
+		ret = handle_eventfd2(args);
+		break;
 #endif /* __linux__ */
 	default:
 		/*



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