X-Git-Url: https://mattmccutchen.net/rsync/rsync.git/blobdiff_plain/e0fde757fda15c0596914e6dc29dcd92a5b6448f..87cc45e136333407acc6463f6415df4979289f30:/cleanup.c

diff --git a/cleanup.c b/cleanup.c
index 904fbaab..49d18307 100644
--- a/cleanup.c
+++ b/cleanup.c
@@ -21,6 +21,32 @@
 
 #include "rsync.h"
 
+/**
+ * Close all open sockets and files, allowing a (somewhat) graceful
+ * shutdown() of socket connections.  This eliminates the abortive
+ * TCP RST sent by a Winsock-based system when the close() occurs.
+ **/
+void close_all(void)
+{
+#ifdef SHUTDOWN_ALL_SOCKETS
+	int max_fd;
+	int fd;
+	int ret;
+	struct stat st;
+
+	max_fd = sysconf(_SC_OPEN_MAX) - 1;
+	for (fd = max_fd; fd >= 0; fd--) {
+		ret = fstat(fd,&st);
+		if (fstat(fd,&st) == 0) {
+			if (is_a_socket(fd)) {
+				ret = shutdown(fd, 2);
+			}
+			ret = close(fd);
+		}
+	}
+#endif
+}
+
 /**
  * @file cleanup.c
  *
@@ -52,7 +78,7 @@ extern int io_error;
 pid_t cleanup_child_pid = -1;
 
 /**
- * Eventually calls exit(), therefore does not return.
+ * Eventually calls exit(), passing @p code, therefore does not return.
  *
  * @param code one of the RERR_* codes from errcode.h.
  **/
@@ -61,6 +87,13 @@ void _exit_cleanup(int code, const char *file, int line)
 	int ocode = code;
 	extern int keep_partial;
 	extern int log_got_error;
+	static int inside_cleanup = 0;
+
+	if (inside_cleanup > 10) {
+		/* prevent the occasional infinite recursion */
+		return;
+	}
+	inside_cleanup++;
 
 	signal(SIGUSR1, SIG_IGN);
 	signal(SIGUSR2, SIG_IGN);
@@ -108,6 +141,7 @@ void _exit_cleanup(int code, const char *file, int line)
 		rprintf(FINFO,"_exit_cleanup(code=%d, file=%s, line=%d): about to call exit(%d)\n", 
 			ocode, file, line, code);
 
+	close_all();
 	exit(code);
 }