libtirpc/libtirpc-0.1.7-dgcall-iprecverr.patch
Steve Dickson 808a248167 - Fixed mutex lock problem in clnt_raw_create()
- Ignore the return value of snprintf() and use strlen() instead to bump
    the pointer in clnt_sperror()
- A couple ntohs() were needed in bindresvport_sa()
- Added IP_RECVERR processing with to clnt_dg_call() so application will
    see errors instead of timing out
2007-07-30 11:24:01 +00:00

99 lines
2.8 KiB
Diff

commit 40ab0c28e995786d5844bd490a31b788ecabf546
Author: Steve Dickson <steved@redhat.com>
Date: Fri May 4 14:26:56 2007 -0400
Added IP_RECVERR processing with to clnt_dg_call() so
application will see errors instead of timing out
Signed-off-by: Steve Dickson <steved@redhat.com>
diff --git a/src/clnt_dg.c b/src/clnt_dg.c
index 151b449..0e35742 100644
--- a/src/clnt_dg.c
+++ b/src/clnt_dg.c
@@ -55,6 +55,13 @@
#include <err.h>
#include "rpc_com.h"
+#ifdef IP_RECVERR
+#include <asm/types.h>
+#include <linux/errqueue.h>
+#include <sys/uio.h>
+#endif
+
+
#define MAX_DEFAULT_FDS 20000
static struct clnt_ops *clnt_dg_ops(void);
@@ -246,6 +253,12 @@ clnt_dg_create(fd, svcaddr, program, version, sendsz, recvsz)
#if 0
(void)bindresvport_sa(fd, (struct sockaddr *)svcaddr->buf);
#endif
+#ifdef IP_RECVERR
+ {
+ int on = 1;
+ setsockopt(fd, SOL_IP, IP_RECVERR, &on, sizeof(on));
+ }
+#endif
ioctl(fd, FIONBIO, (char *)(void *)&one);
/*
* By default, closeit is always FALSE. It is users responsibility
@@ -352,7 +365,7 @@ call_again:
xid++;
*(u_int32_t *)(void *)(cu->cu_outbuf) = htonl(xid);
- if ((! XDR_PUTINT32(xdrs, &proc)) ||
+ if ((! XDR_PUTINT32(xdrs, (int32_t *)&proc)) ||
(! AUTH_MARSHALL(cl->cl_auth, xdrs)) ||
(! (*xargs)(xdrs, argsp))) {
cu->cu_error.re_status = RPC_CANTENCODEARGS;
@@ -404,6 +417,48 @@ get_reply:
}
break;
}
+#ifdef IP_RECVERR
+ if (fd.revents & POLLERR)
+ {
+ struct msghdr msg;
+ struct cmsghdr *cmsg;
+ struct sock_extended_err *e;
+ struct sockaddr_in err_addr;
+ struct sockaddr_in *sin = (struct sockaddr_in *)&cu->cu_raddr;
+ struct iovec iov;
+ char *cbuf = (char *) alloca (outlen + 256);
+ int ret;
+
+ iov.iov_base = cbuf + 256;
+ iov.iov_len = outlen;
+ msg.msg_name = (void *) &err_addr;
+ msg.msg_namelen = sizeof (err_addr);
+ msg.msg_iov = &iov;
+ msg.msg_iovlen = 1;
+ msg.msg_flags = 0;
+ msg.msg_control = cbuf;
+ msg.msg_controllen = 256;
+ ret = recvmsg (cu->cu_fd, &msg, MSG_ERRQUEUE);
+ if (ret >= 0
+ && memcmp (cbuf + 256, cu->cu_outbuf, ret) == 0
+ && (msg.msg_flags & MSG_ERRQUEUE)
+ && ((msg.msg_namelen == 0
+ && ret >= 12)
+ || (msg.msg_namelen == sizeof (err_addr)
+ && err_addr.sin_family == AF_INET
+ && memcmp (&err_addr.sin_addr, &sin->sin_addr,
+ sizeof (err_addr.sin_addr)) == 0
+ && err_addr.sin_port == sin->sin_port)))
+ for (cmsg = CMSG_FIRSTHDR (&msg); cmsg;
+ cmsg = CMSG_NXTHDR (&msg, cmsg))
+ if (cmsg->cmsg_level == SOL_IP && cmsg->cmsg_type == IP_RECVERR)
+ {
+ e = (struct sock_extended_err *) CMSG_DATA(cmsg);
+ cu->cu_error.re_errno = e->ee_errno;
+ return (cu->cu_error.re_status = RPC_CANTRECV);
+ }
+ }
+#endif
/* We have some data now */
do {