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authorEric Andersen <andersen@codepoet.org>2002-06-17 21:12:16 (GMT)
committerEric Andersen <andersen@codepoet.org>2002-06-17 21:12:16 (GMT)
commitcdb3c81f36283df4b53f24a374d78c695e9d8b06 (patch)
tree9494bff7c98929e44c41dcdde32dc3fc6faf4330 /libc/inet/rpc/clnt_udp.c
parent6ba832b158c91c6b35e1832220b3fc5ebf76333f (diff)
Re-backport all the rpc stuff from glibc 2.2.5. This allows us to make this
junk (and I do mean that ;-) thread safe without undue pain. Adds 12k worth to the code size I'm afraid, but since I never use NFS and therefore never include this stuff, I guess thats acceptable. I still need to enable the multi-threaded bits... -Erik
Diffstat (limited to 'libc/inet/rpc/clnt_udp.c')
-rw-r--r--libc/inet/rpc/clnt_udp.c851
1 files changed, 511 insertions, 340 deletions
diff --git a/libc/inet/rpc/clnt_udp.c b/libc/inet/rpc/clnt_udp.c
index e11f9b8..5a5fbbc 100644
--- a/libc/inet/rpc/clnt_udp.c
+++ b/libc/inet/rpc/clnt_udp.c
@@ -6,29 +6,30 @@
* may copy or modify Sun RPC without charge, but are not authorized
* to license or distribute it to anyone else except as part of a product or
* program developed by the user.
- *
+ *
* SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
* WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
* PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
- *
+ *
* Sun RPC is provided with no support and without any obligation on the
* part of Sun Microsystems, Inc. to assist in its use, correction,
* modification or enhancement.
- *
+ *
* SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
* INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
* OR ANY PART THEREOF.
- *
+ *
* In no event will Sun Microsystems, Inc. be liable for any lost revenue
* or profits or other special, indirect and consequential damages, even if
* Sun has been advised of the possibility of such damages.
- *
+ *
* Sun Microsystems, Inc.
* 2550 Garcia Avenue
* Mountain View, California 94043
*/
-#define __FORCE_GLIBC
-#include <features.h>
+#if !defined(lint) && defined(SCCSIDS)
+static char sccsid[] = "@(#)clnt_udp.c 1.39 87/08/11 Copyr 1984 Sun Micro";
+#endif
/*
* clnt_udp.c, Implements a UDP/IP based, client side RPC.
@@ -36,54 +37,73 @@
* Copyright (C) 1984, Sun Microsystems, Inc.
*/
+#define __FORCE_GLIBC
+#include <features.h>
+
#include <stdio.h>
+#include <unistd.h>
#include <rpc/rpc.h>
+#include <rpc/xdr.h>
+#include <rpc/clnt.h>
+#include <sys/poll.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <netdb.h>
#include <errno.h>
#include <rpc/pmap_clnt.h>
-#include <unistd.h>
+#include <net/if.h>
+#ifdef USE_IN_LIBIO
+# include <wchar.h>
+#endif
-extern int errno;
+#ifdef IP_RECVERR
+#include "errqueue.h"
+#include <sys/uio.h>
+#endif
+
+extern bool_t xdr_opaque_auth (XDR *, struct opaque_auth *);
+extern u_long _create_xid (void);
/*
* UDP bases client side rpc operations
*/
-static enum clnt_stat clntudp_call();
-static void clntudp_abort();
-static void clntudp_geterr();
-static bool_t clntudp_freeres();
-static bool_t clntudp_control();
-static void clntudp_destroy();
-
-static struct clnt_ops udp_ops = {
- clntudp_call,
- clntudp_abort,
- clntudp_geterr,
- clntudp_freeres,
- clntudp_destroy,
- clntudp_control
+static enum clnt_stat clntudp_call (CLIENT *, u_long, xdrproc_t, caddr_t,
+ xdrproc_t, caddr_t, struct timeval);
+static void clntudp_abort (void);
+static void clntudp_geterr (CLIENT *, struct rpc_err *);
+static bool_t clntudp_freeres (CLIENT *, xdrproc_t, caddr_t);
+static bool_t clntudp_control (CLIENT *, int, char *);
+static void clntudp_destroy (CLIENT *);
+
+static struct clnt_ops udp_ops =
+{
+ clntudp_call,
+ clntudp_abort,
+ clntudp_geterr,
+ clntudp_freeres,
+ clntudp_destroy,
+ clntudp_control
};
-/*
+/*
* Private data kept per client handle
*/
-struct cu_data {
- int cu_sock;
- bool_t cu_closeit;
- struct sockaddr_in cu_raddr;
- int cu_rlen;
- struct timeval cu_wait;
- struct timeval cu_total;
- struct rpc_err cu_error;
- XDR cu_outxdrs;
- u_int cu_xdrpos;
- u_int cu_sendsz;
- char *cu_outbuf;
- u_int cu_recvsz;
- char cu_inbuf[1];
-};
+struct cu_data
+ {
+ int cu_sock;
+ bool_t cu_closeit;
+ struct sockaddr_in cu_raddr;
+ int cu_rlen;
+ struct timeval cu_wait;
+ struct timeval cu_total;
+ struct rpc_err cu_error;
+ XDR cu_outxdrs;
+ u_int cu_xdrpos;
+ u_int cu_sendsz;
+ char *cu_outbuf;
+ u_int cu_recvsz;
+ char cu_inbuf[1];
+ };
/*
* Create a UDP based client handle.
@@ -95,344 +115,495 @@ struct cu_data {
* Caller may wish to set this something more useful.
*
* wait is the amount of time used between retransmitting a call if
- * no response has been heard; retransmition occurs until the actual
+ * no response has been heard; retransmission occurs until the actual
* rpc call times out.
*
* sendsz and recvsz are the maximum allowable packet sizes that can be
* sent and received.
*/
-CLIENT *clntudp_bufcreate(raddr, program, version, wait, sockp, sendsz,
- recvsz)
-struct sockaddr_in *raddr;
-u_long program;
-u_long version;
-struct timeval wait;
-register int *sockp;
-u_int sendsz;
-u_int recvsz;
+CLIENT *
+clntudp_bufcreate (struct sockaddr_in *raddr, u_long program, u_long version,
+ struct timeval wait, int *sockp, u_int sendsz,
+ u_int recvsz)
{
- CLIENT *cl;
- register struct cu_data *cu;
- struct timeval now;
- struct rpc_msg call_msg;
-
- cu = NULL; /* in case of fooy */
- cl = (CLIENT *) mem_alloc(sizeof(CLIENT));
- if (cl == NULL) {
- (void) fprintf(stderr, "clntudp_create: out of memory\n");
- rpc_createerr.cf_stat = RPC_SYSTEMERROR;
- rpc_createerr.cf_error.re_errno = errno;
- goto fooy;
+ CLIENT *cl;
+ struct cu_data *cu = NULL;
+ struct rpc_msg call_msg;
+
+ cl = (CLIENT *) mem_alloc (sizeof (CLIENT));
+ sendsz = ((sendsz + 3) / 4) * 4;
+ recvsz = ((recvsz + 3) / 4) * 4;
+ cu = (struct cu_data *) mem_alloc (sizeof (*cu) + sendsz + recvsz);
+ if (cl == NULL || cu == NULL)
+ {
+ struct rpc_createerr *ce = &get_rpc_createerr ();
+#ifdef USE_IN_LIBIO
+ if (_IO_fwide (stderr, 0) > 0)
+ (void) __fwprintf (stderr, L"%s",
+ _("clntudp_create: out of memory\n"));
+ else
+#endif
+ (void) fputs (_("clntudp_create: out of memory\n"), stderr);
+ ce->cf_stat = RPC_SYSTEMERROR;
+ ce->cf_error.re_errno = ENOMEM;
+ goto fooy;
+ }
+ cu->cu_outbuf = &cu->cu_inbuf[recvsz];
+
+ if (raddr->sin_port == 0)
+ {
+ u_short port;
+ if ((port =
+ pmap_getport (raddr, program, version, IPPROTO_UDP)) == 0)
+ {
+ goto fooy;
}
- sendsz = ((sendsz + 3) / 4) * 4;
- recvsz = ((recvsz + 3) / 4) * 4;
- cu = (struct cu_data *) mem_alloc(sizeof(*cu) + sendsz + recvsz);
- if (cu == NULL) {
- (void) fprintf(stderr, "clntudp_create: out of memory\n");
- rpc_createerr.cf_stat = RPC_SYSTEMERROR;
- rpc_createerr.cf_error.re_errno = errno;
- goto fooy;
+ raddr->sin_port = htons (port);
+ }
+ cl->cl_ops = &udp_ops;
+ cl->cl_private = (caddr_t) cu;
+ cu->cu_raddr = *raddr;
+ cu->cu_rlen = sizeof (cu->cu_raddr);
+ cu->cu_wait = wait;
+ cu->cu_total.tv_sec = -1;
+ cu->cu_total.tv_usec = -1;
+ cu->cu_sendsz = sendsz;
+ cu->cu_recvsz = recvsz;
+ call_msg.rm_xid = _create_xid ();
+ call_msg.rm_direction = CALL;
+ call_msg.rm_call.cb_rpcvers = RPC_MSG_VERSION;
+ call_msg.rm_call.cb_prog = program;
+ call_msg.rm_call.cb_vers = version;
+ xdrmem_create (&(cu->cu_outxdrs), cu->cu_outbuf,
+ sendsz, XDR_ENCODE);
+ if (!xdr_callhdr (&(cu->cu_outxdrs), &call_msg))
+ {
+ goto fooy;
+ }
+ cu->cu_xdrpos = XDR_GETPOS (&(cu->cu_outxdrs));
+ if (*sockp < 0)
+ {
+ int dontblock = 1;
+
+ *sockp = socket (AF_INET, SOCK_DGRAM, IPPROTO_UDP);
+ if (*sockp < 0)
+ {
+ struct rpc_createerr *ce = &get_rpc_createerr ();
+ ce->cf_stat = RPC_SYSTEMERROR;
+ ce->cf_error.re_errno = errno;
+ goto fooy;
}
- cu->cu_outbuf = &cu->cu_inbuf[recvsz];
-
- (void) gettimeofday(&now, (struct timezone *) 0);
- if (raddr->sin_port == 0) {
- u_short port;
-
- if ((port =
- pmap_getport(raddr, program, version, IPPROTO_UDP)) == 0) {
- goto fooy;
- }
- raddr->sin_port = htons(port);
- }
- cl->cl_ops = &udp_ops;
- cl->cl_private = (caddr_t) cu;
- cu->cu_raddr = *raddr;
- cu->cu_rlen = sizeof(cu->cu_raddr);
- cu->cu_wait = wait;
- cu->cu_total.tv_sec = -1;
- cu->cu_total.tv_usec = -1;
- cu->cu_sendsz = sendsz;
- cu->cu_recvsz = recvsz;
- call_msg.rm_xid = getpid() ^ now.tv_sec ^ now.tv_usec;
- call_msg.rm_direction = CALL;
- call_msg.rm_call.cb_rpcvers = RPC_MSG_VERSION;
- call_msg.rm_call.cb_prog = program;
- call_msg.rm_call.cb_vers = version;
- xdrmem_create(&(cu->cu_outxdrs), cu->cu_outbuf, sendsz, XDR_ENCODE);
- if (!xdr_callhdr(&(cu->cu_outxdrs), &call_msg)) {
- goto fooy;
- }
- cu->cu_xdrpos = XDR_GETPOS(&(cu->cu_outxdrs));
- if (*sockp < 0) {
- int dontblock = 1;
-
- *sockp = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
- if (*sockp < 0) {
- rpc_createerr.cf_stat = RPC_SYSTEMERROR;
- rpc_createerr.cf_error.re_errno = errno;
- goto fooy;
- }
- /* attempt to bind to prov port */
- (void) bindresvport(*sockp, (struct sockaddr_in *) 0);
- /* the sockets rpc controls are non-blocking */
- (void) ioctl(*sockp, FIONBIO, (char *) &dontblock);
- cu->cu_closeit = TRUE;
- } else {
- cu->cu_closeit = FALSE;
- }
- cu->cu_sock = *sockp;
- cl->cl_auth = authnone_create();
- return (cl);
- fooy:
- if (cu)
- mem_free((caddr_t) cu, sizeof(*cu) + sendsz + recvsz);
- if (cl)
- mem_free((caddr_t) cl, sizeof(CLIENT));
- return ((CLIENT *) NULL);
+ /* attempt to bind to prov port */
+ (void) bindresvport (*sockp, (struct sockaddr_in *) 0);
+ /* the sockets rpc controls are non-blocking */
+ (void) ioctl (*sockp, FIONBIO, (char *) &dontblock);
+#ifdef IP_RECVERR
+ {
+ int on = 1;
+ setsockopt(*sockp, SOL_IP, IP_RECVERR, &on, sizeof(on));
+ }
+#endif
+ cu->cu_closeit = TRUE;
+ }
+ else
+ {
+ cu->cu_closeit = FALSE;
+ }
+ cu->cu_sock = *sockp;
+ cl->cl_auth = authnone_create ();
+ return cl;
+fooy:
+ if (cu)
+ mem_free ((caddr_t) cu, sizeof (*cu) + sendsz + recvsz);
+ if (cl)
+ mem_free ((caddr_t) cl, sizeof (CLIENT));
+ return (CLIENT *) NULL;
}
-CLIENT *clntudp_create(raddr, program, version, wait, sockp)
-struct sockaddr_in *raddr;
-u_long program;
-u_long version;
-struct timeval wait;
-register int *sockp;
+CLIENT *
+clntudp_create (raddr, program, version, wait, sockp)
+ struct sockaddr_in *raddr;
+ u_long program;
+ u_long version;
+ struct timeval wait;
+ int *sockp;
{
- return (clntudp_bufcreate(raddr, program, version, wait, sockp,
- UDPMSGSIZE, UDPMSGSIZE));
+ return clntudp_bufcreate (raddr, program, version, wait, sockp,
+ UDPMSGSIZE, UDPMSGSIZE);
}
-static enum clnt_stat
-clntudp_call(cl, proc, xargs, argsp, xresults, resultsp, utimeout)
-register CLIENT *cl; /* client handle */
-u_long proc; /* procedure number */
-xdrproc_t xargs; /* xdr routine for args */
-caddr_t argsp; /* pointer to args */
-xdrproc_t xresults; /* xdr routine for results */
-caddr_t resultsp; /* pointer to results */
-struct timeval utimeout; /* seconds to wait before giving up */
+static int
+is_network_up (int sock)
{
- register struct cu_data *cu = (struct cu_data *) cl->cl_private;
- register XDR *xdrs;
- register int outlen;
- register int inlen;
- int fromlen;
-
-#ifdef FD_SETSIZE
- fd_set readfds;
- fd_set mask;
-#else
- int readfds;
- register int mask;
-#endif /* def FD_SETSIZE */
- struct sockaddr_in from;
- struct rpc_msg reply_msg;
- XDR reply_xdrs;
- struct timeval time_waited;
- bool_t ok;
- int nrefreshes = 2; /* number of times to refresh cred */
- struct timeval timeout;
-
- if (cu->cu_total.tv_usec == -1) {
- timeout = utimeout; /* use supplied timeout */
- } else {
- timeout = cu->cu_total; /* use default timeout */
- }
-
- time_waited.tv_sec = 0;
- time_waited.tv_usec = 0;
- call_again:
- xdrs = &(cu->cu_outxdrs);
- xdrs->x_op = XDR_ENCODE;
- XDR_SETPOS(xdrs, cu->cu_xdrpos);
- /*
- * the transaction is the first thing in the out buffer
- */
- (*(u_short *) (cu->cu_outbuf))++;
- if ((!XDR_PUTLONG(xdrs, (long *) &proc)) ||
- (!AUTH_MARSHALL(cl->cl_auth, xdrs)) || (!(*xargs) (xdrs, argsp)))
- return (cu->cu_error.re_status = RPC_CANTENCODEARGS);
- outlen = (int) XDR_GETPOS(xdrs);
-
- send_again:
- if (sendto(cu->cu_sock, cu->cu_outbuf, outlen, 0,
- (struct sockaddr *) &(cu->cu_raddr), cu->cu_rlen)
- != outlen) {
- cu->cu_error.re_errno = errno;
- return (cu->cu_error.re_status = RPC_CANTSEND);
+ struct ifconf ifc;
+ char buf[UDPMSGSIZE];
+ struct ifreq ifreq, *ifr;
+ int n;
+
+ ifc.ifc_len = sizeof (buf);
+ ifc.ifc_buf = buf;
+ if (ioctl(sock, SIOCGIFCONF, (char *) &ifc) == 0)
+ {
+ ifr = ifc.ifc_req;
+ for (n = ifc.ifc_len / sizeof (struct ifreq); n > 0; n--, ifr++)
+ {
+ ifreq = *ifr;
+ if (ioctl (sock, SIOCGIFFLAGS, (char *) &ifreq) < 0)
+ break;
+
+ if ((ifreq.ifr_flags & IFF_UP)
+ && ifr->ifr_addr.sa_family == AF_INET)
+ return 1;
}
+ }
+ return 0;
+}
- /*
- * Hack to provide rpc-based message passing
- */
- if (timeout.tv_sec == 0 && timeout.tv_usec == 0) {
- return (cu->cu_error.re_status = RPC_TIMEDOUT);
+static enum clnt_stat
+clntudp_call (cl, proc, xargs, argsp, xresults, resultsp, utimeout)
+ CLIENT *cl; /* client handle */
+ u_long proc; /* procedure number */
+ xdrproc_t xargs; /* xdr routine for args */
+ caddr_t argsp; /* pointer to args */
+ xdrproc_t xresults; /* xdr routine for results */
+ caddr_t resultsp; /* pointer to results */
+ struct timeval utimeout; /* seconds to wait before giving up */
+{
+ struct cu_data *cu = (struct cu_data *) cl->cl_private;
+ XDR *xdrs;
+ int outlen = 0;
+ int inlen;
+ socklen_t fromlen;
+ struct pollfd fd;
+ int milliseconds = (cu->cu_wait.tv_sec * 1000) +
+ (cu->cu_wait.tv_usec / 1000);
+ struct sockaddr_in from;
+ struct rpc_msg reply_msg;
+ XDR reply_xdrs;
+ struct timeval time_waited;
+ bool_t ok;
+ int nrefreshes = 2; /* number of times to refresh cred */
+ struct timeval timeout;
+ int anyup; /* any network interface up */
+
+ if (cu->cu_total.tv_usec == -1)
+ {
+ timeout = utimeout; /* use supplied timeout */
+ }
+ else
+ {
+ timeout = cu->cu_total; /* use default timeout */
+ }
+
+ time_waited.tv_sec = 0;
+ time_waited.tv_usec = 0;
+call_again:
+ xdrs = &(cu->cu_outxdrs);
+ if (xargs == NULL)
+ goto get_reply;
+ xdrs->x_op = XDR_ENCODE;
+ XDR_SETPOS (xdrs, cu->cu_xdrpos);
+ /*
+ * the transaction is the first thing in the out buffer
+ */
+ (*(uint32_t *) (cu->cu_outbuf))++;
+ if ((!XDR_PUTLONG (xdrs, (long *) &proc)) ||
+ (!AUTH_MARSHALL (cl->cl_auth, xdrs)) ||
+ (!(*xargs) (xdrs, argsp)))
+ return (cu->cu_error.re_status = RPC_CANTENCODEARGS);
+ outlen = (int) XDR_GETPOS (xdrs);
+
+send_again:
+ if (sendto (cu->cu_sock, cu->cu_outbuf, outlen, 0,
+ (struct sockaddr *) &(cu->cu_raddr), cu->cu_rlen)
+ != outlen)
+ {
+ cu->cu_error.re_errno = errno;
+ return (cu->cu_error.re_status = RPC_CANTSEND);
+ }
+
+ /*
+ * Hack to provide rpc-based message passing
+ */
+ if (timeout.tv_sec == 0 && timeout.tv_usec == 0)
+ {
+ return (cu->cu_error.re_status = RPC_TIMEDOUT);
+ }
+ get_reply:
+ /*
+ * sub-optimal code appears here because we have
+ * some clock time to spare while the packets are in flight.
+ * (We assume that this is actually only executed once.)
+ */
+ reply_msg.acpted_rply.ar_verf = _null_auth;
+ reply_msg.acpted_rply.ar_results.where = resultsp;
+ reply_msg.acpted_rply.ar_results.proc = xresults;
+ fd.fd = cu->cu_sock;
+ fd.events = POLLIN;
+ anyup = 0;
+ for (;;)
+ {
+ switch (poll (&fd, 1, milliseconds))
+ {
+
+ case 0:
+ if (anyup == 0)
+ {
+ anyup = is_network_up (cu->cu_sock);
+ if (!anyup)
+ return (cu->cu_error.re_status = RPC_CANTRECV);
+ }
+
+ time_waited.tv_sec += cu->cu_wait.tv_sec;
+ time_waited.tv_usec += cu->cu_wait.tv_usec;
+ while (time_waited.tv_usec >= 1000000)
+ {
+ time_waited.tv_sec++;
+ time_waited.tv_usec -= 1000000;
+ }
+ if ((time_waited.tv_sec < timeout.tv_sec) ||
+ ((time_waited.tv_sec == timeout.tv_sec) &&
+ (time_waited.tv_usec < timeout.tv_usec)))
+ goto send_again;
+ return (cu->cu_error.re_status = RPC_TIMEDOUT);
+
+ /*
+ * buggy in other cases because time_waited is not being
+ * updated.
+ */
+ case -1:
+ if (errno == EINTR)
+ continue;
+ cu->cu_error.re_errno = errno;
+ return (cu->cu_error.re_status = RPC_CANTRECV);
}
- /*
- * sub-optimal code appears here because we have
- * some clock time to spare while the packets are in flight.
- * (We assume that this is actually only executed once.)
- */
- reply_msg.acpted_rply.ar_verf = _null_auth;
- reply_msg.acpted_rply.ar_results.where = resultsp;
- reply_msg.acpted_rply.ar_results.proc = xresults;
-#ifdef FD_SETSIZE
- FD_ZERO(&mask);
- FD_SET(cu->cu_sock, &mask);
-#else
- mask = 1 << cu->cu_sock;
-#endif /* def FD_SETSIZE */
- for (;;) {
- readfds = mask;
- switch (select(_rpc_dtablesize(), &readfds, NULL,
- NULL, &(cu->cu_wait))) {
-
- case 0:
- time_waited.tv_sec += cu->cu_wait.tv_sec;
- time_waited.tv_usec += cu->cu_wait.tv_usec;
- while (time_waited.tv_usec >= 1000000) {
- time_waited.tv_sec++;
- time_waited.tv_usec -= 1000000;
- }
- if ((time_waited.tv_sec < timeout.tv_sec) ||
- ((time_waited.tv_sec == timeout.tv_sec) &&
- (time_waited.tv_usec < timeout.tv_usec)))
- goto send_again;
- return (cu->cu_error.re_status = RPC_TIMEDOUT);
-
- /*
- * buggy in other cases because time_waited is not being
- * updated.
- */
- case -1:
- if (errno == EINTR)
- continue;
- cu->cu_error.re_errno = errno;
- return (cu->cu_error.re_status = RPC_CANTRECV);
+#ifdef IP_RECVERR
+ if (fd.revents & POLLERR)
+ {
+ struct msghdr msg;
+ struct cmsghdr *cmsg;
+ struct sock_extended_err *e;
+ struct sockaddr_in err_addr;
+ 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_sock, &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, &cu->cu_raddr.sin_addr,
+ sizeof (err_addr.sin_addr)) == 0
+ && err_addr.sin_port == cu->cu_raddr.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);
}
- do {
- fromlen = sizeof(struct sockaddr);
-
- inlen = recvfrom(cu->cu_sock, cu->cu_inbuf,
- (int) cu->cu_recvsz, 0,
- (struct sockaddr *) &from, &fromlen);
- } while (inlen < 0 && errno == EINTR);
- if (inlen < 0) {
- if (errno == EWOULDBLOCK)
- continue;
- cu->cu_error.re_errno = errno;
- return (cu->cu_error.re_status = RPC_CANTRECV);
- }
- if (inlen < sizeof(u_long))
- continue;
- /* see if reply transaction id matches sent id */
- if (*((u_long *) (cu->cu_inbuf)) != *((u_long *) (cu->cu_outbuf)))
- continue;
- /* we now assume we have the proper reply */
- break;
}
-
- /*
- * now decode and validate the response
- */
- xdrmem_create(&reply_xdrs, cu->cu_inbuf, (u_int) inlen, XDR_DECODE);
- ok = xdr_replymsg(&reply_xdrs, &reply_msg);
- /* XDR_DESTROY(&reply_xdrs); save a few cycles on noop destroy */
- if (ok) {
- _seterr_reply(&reply_msg, &(cu->cu_error));
- if (cu->cu_error.re_status == RPC_SUCCESS) {
- if (!AUTH_VALIDATE(cl->cl_auth,
- &reply_msg.acpted_rply.ar_verf)) {
- cu->cu_error.re_status = RPC_AUTHERROR;
- cu->cu_error.re_why = AUTH_INVALIDRESP;
- }
- if (reply_msg.acpted_rply.ar_verf.oa_base != NULL) {
- xdrs->x_op = XDR_FREE;
- (void) xdr_opaque_auth(xdrs,
- &(reply_msg.acpted_rply.ar_verf));
- }
- } /* end successful completion */
- else {
- /* maybe our credentials need to be refreshed ... */
- if (nrefreshes > 0 && AUTH_REFRESH(cl->cl_auth)) {
- nrefreshes--;
- goto call_again;
- }
- } /* end of unsuccessful completion */
- } /* end of valid reply message */
- else {
- cu->cu_error.re_status = RPC_CANTDECODERES;
+#endif
+ do
+ {
+ fromlen = sizeof (struct sockaddr);
+ inlen = recvfrom (cu->cu_sock, cu->cu_inbuf,
+ (int) cu->cu_recvsz, 0,
+ (struct sockaddr *) &from, &fromlen);
}
- return (cu->cu_error.re_status);
+ while (inlen < 0 && errno == EINTR);
+ if (inlen < 0)
+ {
+ if (errno == EWOULDBLOCK)
+ continue;
+ cu->cu_error.re_errno = errno;
+ return (cu->cu_error.re_status = RPC_CANTRECV);
+ }
+ if (inlen < 4)
+ continue;
+
+ /* see if reply transaction id matches sent id.
+ Don't do this if we only wait for a replay */
+ if (xargs != NULL
+ && (*((u_int32_t *) (cu->cu_inbuf))
+ != *((u_int32_t *) (cu->cu_outbuf))))
+ continue;
+ /* we now assume we have the proper reply */
+ break;
+ }
+
+ /*
+ * now decode and validate the response
+ */
+ xdrmem_create (&reply_xdrs, cu->cu_inbuf, (u_int) inlen, XDR_DECODE);
+ ok = xdr_replymsg (&reply_xdrs, &reply_msg);
+ /* XDR_DESTROY(&reply_xdrs); save a few cycles on noop destroy */
+ if (ok)
+ {
+ _seterr_reply (&reply_msg, &(cu->cu_error));
+ if (cu->cu_error.re_status == RPC_SUCCESS)
+ {
+ if (!AUTH_VALIDATE (cl->cl_auth,
+ &reply_msg.acpted_rply.ar_verf))
+ {
+ cu->cu_error.re_status = RPC_AUTHERROR;
+ cu->cu_error.re_why = AUTH_INVALIDRESP;
+ }
+ if (reply_msg.acpted_rply.ar_verf.oa_base != NULL)
+ {
+ xdrs->x_op = XDR_FREE;
+ (void) xdr_opaque_auth (xdrs,
+ &(reply_msg.acpted_rply.ar_verf));
+ }
+ } /* end successful completion */
+ else
+ {
+ /* maybe our credentials need to be refreshed ... */
+ if (nrefreshes > 0 && AUTH_REFRESH (cl->cl_auth))
+ {
+ nrefreshes--;
+ goto call_again;
+ }
+ } /* end of unsuccessful completion */
+ } /* end of valid reply message */
+ else
+ {
+ cu->cu_error.re_status = RPC_CANTDECODERES;
+ }
+ return cu->cu_error.re_status;
}
-static void clntudp_geterr(cl, errp)
-CLIENT *cl;
-struct rpc_err *errp;
+static void
+clntudp_geterr (CLIENT *cl, struct rpc_err *errp)
{
- register struct cu_data *cu = (struct cu_data *) cl->cl_private;
+ struct cu_data *cu = (struct cu_data *) cl->cl_private;
- *errp = cu->cu_error;
+ *errp = cu->cu_error;
}
-static bool_t clntudp_freeres(cl, xdr_res, res_ptr)
-CLIENT *cl;
-xdrproc_t xdr_res;
-caddr_t res_ptr;
+static bool_t
+clntudp_freeres (CLIENT *cl, xdrproc_t xdr_res, caddr_t res_ptr)
{
- register struct cu_data *cu = (struct cu_data *) cl->cl_private;
- register XDR *xdrs = &(cu->cu_outxdrs);
+ struct cu_data *cu = (struct cu_data *) cl->cl_private;
+ XDR *xdrs = &(cu->cu_outxdrs);
- xdrs->x_op = XDR_FREE;
- return ((*xdr_res) (xdrs, res_ptr));
+ xdrs->x_op = XDR_FREE;
+ return (*xdr_res) (xdrs, res_ptr);
}
-static void clntudp_abort( /*h */ )
- /*CLIENT *h; */
+static void
+clntudp_abort (void)
{
}
-static bool_t clntudp_control(cl, request, info)
-CLIENT *cl;
-int request;
-char *info;
+static bool_t
+clntudp_control (CLIENT *cl, int request, char *info)
{
- register struct cu_data *cu = (struct cu_data *) cl->cl_private;
-
- switch (request) {
- case CLSET_TIMEOUT:
- cu->cu_total = *(struct timeval *) info;
- break;
- case CLGET_TIMEOUT:
- *(struct timeval *) info = cu->cu_total;
- break;
- case CLSET_RETRY_TIMEOUT:
- cu->cu_wait = *(struct timeval *) info;
- break;
- case CLGET_RETRY_TIMEOUT:
- *(struct timeval *) info = cu->cu_wait;
- break;
- case CLGET_SERVER_ADDR:
- *(struct sockaddr_in *) info = cu->cu_raddr;
- break;
- default:
- return (FALSE);
- }
- return (TRUE);
+ struct cu_data *cu = (struct cu_data *) cl->cl_private;
+
+ switch (request)
+ {
+ case CLSET_FD_CLOSE:
+ cu->cu_closeit = TRUE;
+ break;
+ case CLSET_FD_NCLOSE:
+ cu->cu_closeit = FALSE;
+ break;
+ case CLSET_TIMEOUT:
+ cu->cu_total = *(struct timeval *) info;
+ break;
+ case CLGET_TIMEOUT:
+ *(struct timeval *) info = cu->cu_total;
+ break;
+ case CLSET_RETRY_TIMEOUT:
+ cu->cu_wait = *(struct timeval *) info;
+ break;
+ case CLGET_RETRY_TIMEOUT:
+ *(struct timeval *) info = cu->cu_wait;
+ break;
+ case CLGET_SERVER_ADDR:
+ *(struct sockaddr_in *) info = cu->cu_raddr;
+ break;
+ case CLGET_FD:
+ *(int *)info = cu->cu_sock;
+ break;
+ case CLGET_XID:
+ /*
+ * use the knowledge that xid is the
+ * first element in the call structure *.
+ * This will get the xid of the PREVIOUS call
+ */
+ *(u_long *)info = ntohl(*(u_long *)cu->cu_outbuf);
+ break;
+ case CLSET_XID:
+ /* This will set the xid of the NEXT call */
+ *(u_long *)cu->cu_outbuf = htonl(*(u_long *)info - 1);
+ /* decrement by 1 as clntudp_call() increments once */
+ case CLGET_VERS:
+ /*
+ * This RELIES on the information that, in the call body,
+ * the version number field is the fifth field from the
+ * begining of the RPC header. MUST be changed if the
+ * call_struct is changed
+ */
+ *(u_long *)info = ntohl(*(u_long *)(cu->cu_outbuf +
+ 4 * BYTES_PER_XDR_UNIT));
+ break;
+ case CLSET_VERS:
+ *(u_long *)(cu->cu_outbuf + 4 * BYTES_PER_XDR_UNIT)
+ = htonl(*(u_long *)info);
+ break;
+ case CLGET_PROG:
+ /*
+ * This RELIES on the information that, in the call body,
+ * the program number field is the field from the
+ * begining of the RPC header. MUST be changed if the
+ * call_struct is changed
+ */
+ *(u_long *)info = ntohl(*(u_long *)(cu->cu_outbuf +
+ 3 * BYTES_PER_XDR_UNIT));
+ break;
+ case CLSET_PROG:
+ *(u_long *)(cu->cu_outbuf + 3 * BYTES_PER_XDR_UNIT)
+ = htonl(*(u_long *)info);
+ break;
+ /* The following are only possible with TI-RPC */
+ case CLGET_SVC_ADDR:
+ case CLSET_SVC_ADDR:
+ case CLSET_PUSH_TIMOD:
+ case CLSET_POP_TIMOD:
+ default:
+ return FALSE;
+ }
+ return TRUE;
}
-static void clntudp_destroy(cl)
-CLIENT *cl;
+static void
+clntudp_destroy (CLIENT *cl)
{
- register struct cu_data *cu = (struct cu_data *) cl->cl_private;
-
- if (cu->cu_closeit) {
- (void) close(cu->cu_sock);
- }
- XDR_DESTROY(&(cu->cu_outxdrs));
- mem_free((caddr_t) cu, (sizeof(*cu) + cu->cu_sendsz + cu->cu_recvsz));
- mem_free((caddr_t) cl, sizeof(CLIENT));
+ struct cu_data *cu = (struct cu_data *) cl->cl_private;
+
+ if (cu->cu_closeit)
+ {
+ (void) close (cu->cu_sock);
+ }
+ XDR_DESTROY (&(cu->cu_outxdrs));
+ mem_free ((caddr_t) cu, (sizeof (*cu) + cu->cu_sendsz + cu->cu_recvsz));
+ mem_free ((caddr_t) cl, sizeof (CLIENT));
}