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busybox: Fixed remote logging bug in which starting syslog before the network (and hence the remote host being available) results in failure to do any remote logging

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SVN-Revision: 21961
This commit is contained in:
Daniel Dickinson 2010-06-27 12:18:12 +00:00
parent bb44616ebe
commit b86c99feb1
1 changed files with 40 additions and 0 deletions
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40
package/busybox/patches/610-syslog-remote-retry-connection.patch Normal file
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@ -0,0 +1,40 @@
Index: busybox-1.16.1/sysklogd/syslogd.c
===================================================================
--- busybox-1.16.1.orig/sysklogd/syslogd.c 2010-03-28 13:44:04.000000000 -0400
+++ busybox-1.16.1/sysklogd/syslogd.c 2010-06-17 21:48:11.000000000 -0400
@@ -555,6 +555,7 @@
static void do_syslogd(void)
{
int sock_fd;
+ int send_err = 0;
#if ENABLE_FEATURE_SYSLOGD_DUP
int last_sz = -1;
char *last_buf;
@@ -632,10 +633,23 @@
* over network, mimic that */
recvbuf[sz] = '\n';
/* send message to remote logger, ignore possible error */
- /* TODO: on some errors, close and set G.remoteFD to -1
- * so that DNS resolution and connect is retried? */
- sendto(G.remoteFD, recvbuf, sz+1, MSG_DONTWAIT,
- &G.remoteAddr->u.sa, G.remoteAddr->len);
+ if ( sendto(G.remoteFD, recvbuf, sz+1, MSG_DONTWAIT,
+ &G.remoteAddr->u.sa, G.remoteAddr->len) == -1 ) {
+ send_err = errno;
+ }
+
+ /* On some errors, close and set G.remoteFD to -1
+ * so that DNS resolution and connect is retried */
+ switch (send_err) {
+ case ECONNRESET:
+ case EDESTADDRREQ:
+ case EISCONN:
+ case ENOTCONN:
+ case EPIPE:
+ close(G.remoteFD);
+ G.remoteFD = -1;
+ break;
+ }
no_luck: ;
}
#endif