[Qemu-devel] [PATCH 07/19] sockets: Drop sockets_debug debug code

[Markus Armbruster <armbru@redhat.com>]

I'm trying to improve this code's error reporting, and the debug code
is getting in my way: it clutters the code, it clobbers errno in
inconvenient places, and it uses the same fprintf() both for error
reporting and debug output in a few places.

Get rid of it.  Once decent error reporting is in place, adding back
whatever debug code we need shouldn't be hard.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
---
 qemu-sockets.c |   43 ++-----------------------------------------
 1 files changed, 2 insertions(+), 41 deletions(-)

diff --git a/qemu-sockets.c b/qemu-sockets.c
index 61b2247..e6e6c72 100644
--- a/qemu-sockets.c
+++ b/qemu-sockets.c
@@ -26,7 +26,6 @@
 # define AI_ADDRCONFIG 0
 #endif
 
-static int sockets_debug = 0;
 static const int on=1, off=0;
 
 /* used temporarely until all users are converted to QemuOpts */
@@ -101,21 +100,6 @@ const char *inet_strfamily(int family)
     return "unknown";
 }
 
-static void inet_print_addrinfo(const char *tag, struct addrinfo *res)
-{
-    struct addrinfo *e;
-    char uaddr[INET6_ADDRSTRLEN+1];
-    char uport[33];
-
-    for (e = res; e != NULL; e = e->ai_next) {
-        getnameinfo((struct sockaddr*)e->ai_addr,e->ai_addrlen,
-                    uaddr,INET6_ADDRSTRLEN,uport,32,
-                    NI_NUMERICHOST | NI_NUMERICSERV);
-        fprintf(stderr,"%s: getaddrinfo: family %s, host %s, port %s\n",
-                tag, inet_strfamily(e->ai_family), uaddr, uport);
-    }
-}
-
 int inet_listen_opts(QemuOpts *opts, int port_offset)
 {
     struct addrinfo ai,*res,*e;
@@ -153,8 +137,6 @@ int inet_listen_opts(QemuOpts *opts, int port_offset)
                 gai_strerror(rc));
         return -1;
     }
-    if (sockets_debug)
-        inet_print_addrinfo(__FUNCTION__, res);
 
     /* create socket + bind */
     for (e = res; e != NULL; e = e->ai_next) {
@@ -179,13 +161,10 @@ int inet_listen_opts(QemuOpts *opts, int port_offset)
 
         for (;;) {
             if (bind(slisten, e->ai_addr, e->ai_addrlen) == 0) {
-                if (sockets_debug)
-                    fprintf(stderr,"%s: bind(%s,%s,%d): OK\n", __FUNCTION__,
-                        inet_strfamily(e->ai_family), uaddr, inet_getport(e));
                 goto listen;
             }
             try_next = to && (inet_getport(e) <= to + port_offset);
-            if (!try_next || sockets_debug)
+            if (!try_next)
                 fprintf(stderr,"%s: bind(%s,%s,%d): %s\n", __FUNCTION__,
                         inet_strfamily(e->ai_family), uaddr, inet_getport(e),
                         strerror(errno));
@@ -249,8 +228,6 @@ int inet_connect_opts(QemuOpts *opts)
                 gai_strerror(rc));
 	return -1;
     }
-    if (sockets_debug)
-        inet_print_addrinfo(__FUNCTION__, res);
 
     for (e = res; e != NULL; e = e->ai_next) {
         if (getnameinfo((struct sockaddr*)e->ai_addr,e->ai_addrlen,
@@ -269,17 +246,13 @@ int inet_connect_opts(QemuOpts *opts)
 
         /* connect to peer */
         if (connect(sock,e->ai_addr,e->ai_addrlen) < 0) {
-            if (sockets_debug || NULL == e->ai_next)
+            if (NULL == e->ai_next)
                 fprintf(stderr, "%s: connect(%s,%s,%s,%s): %s\n", __FUNCTION__,
                         inet_strfamily(e->ai_family),
                         e->ai_canonname, uaddr, uport, strerror(errno));
             closesocket(sock);
             continue;
         }
-        if (sockets_debug)
-            fprintf(stderr, "%s: connect(%s,%s,%s,%s): OK\n", __FUNCTION__,
-                    inet_strfamily(e->ai_family),
-                    e->ai_canonname, uaddr, uport);
         freeaddrinfo(res);
         return sock;
     }
@@ -322,10 +295,6 @@ int inet_dgram_opts(QemuOpts *opts)
                 gai_strerror(rc));
 	return -1;
     }
-    if (sockets_debug) {
-        fprintf(stderr, "%s: peer (%s:%s)\n", __FUNCTION__, addr, port);
-        inet_print_addrinfo(__FUNCTION__, peer);
-    }
 
     /* lookup local addr */
     memset(&ai,0, sizeof(ai));
@@ -346,10 +315,6 @@ int inet_dgram_opts(QemuOpts *opts)
                 gai_strerror(rc));
         return -1;
     }
-    if (sockets_debug) {
-        fprintf(stderr, "%s: local (%s:%s)\n", __FUNCTION__, addr, port);
-        inet_print_addrinfo(__FUNCTION__, local);
-    }
 
     /* create socket */
     sock = qemu_socket(peer->ai_family, peer->ai_socktype, peer->ai_protocol);
@@ -541,8 +506,6 @@ int unix_listen_opts(QemuOpts *opts)
         goto err;
     }
 
-    if (sockets_debug)
-        fprintf(stderr, "bind(unix:%s): OK\n", un.sun_path);
     return sock;
 
 err:
@@ -576,8 +539,6 @@ int unix_connect_opts(QemuOpts *opts)
 	return -1;
     }
 
-    if (sockets_debug)
-        fprintf(stderr, "connect(unix:%s): OK\n", path);
     return sock;
 }
 
-- 
1.7.6.5