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-rw-r--r--lib/libc/rpc/clnt_vc.c871
1 files changed, 0 insertions, 871 deletions
diff --git a/lib/libc/rpc/clnt_vc.c b/lib/libc/rpc/clnt_vc.c
deleted file mode 100644
index 07eff46..0000000
--- a/lib/libc/rpc/clnt_vc.c
+++ /dev/null
@@ -1,871 +0,0 @@
-/* $NetBSD: clnt_vc.c,v 1.4 2000/07/14 08:40:42 fvdl Exp $ */
-
-/*
- * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
- * unrestricted use provided that this legend is included on all tape
- * media and as a part of the software program in whole or part. Users
- * 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
- */
-
-#if defined(LIBC_SCCS) && !defined(lint)
-static char *sccsid2 = "@(#)clnt_tcp.c 1.37 87/10/05 Copyr 1984 Sun Micro";
-static char *sccsid = "@(#)clnt_tcp.c 2.2 88/08/01 4.0 RPCSRC";
-static char sccsid3[] = "@(#)clnt_vc.c 1.19 89/03/16 Copyr 1988 Sun Micro";
-#endif
-#include <sys/cdefs.h>
-__FBSDID("$FreeBSD$");
-
-/*
- * clnt_tcp.c, Implements a TCP/IP based, client side RPC.
- *
- * Copyright (C) 1984, Sun Microsystems, Inc.
- *
- * TCP based RPC supports 'batched calls'.
- * A sequence of calls may be batched-up in a send buffer. The rpc call
- * return immediately to the client even though the call was not necessarily
- * sent. The batching occurs if the results' xdr routine is NULL (0) AND
- * the rpc timeout value is zero (see clnt.h, rpc).
- *
- * Clients should NOT casually batch calls that in fact return results; that is,
- * the server side should be aware that a call is batched and not produce any
- * return message. Batched calls that produce many result messages can
- * deadlock (netlock) the client and the server....
- *
- * Now go hang yourself.
- */
-
-#include "namespace.h"
-#include "reentrant.h"
-#include <sys/types.h>
-#include <sys/poll.h>
-#include <sys/syslog.h>
-#include <sys/socket.h>
-#include <sys/un.h>
-#include <sys/uio.h>
-
-#include <arpa/inet.h>
-#include <assert.h>
-#include <err.h>
-#include <errno.h>
-#include <netdb.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-#include <signal.h>
-
-#include <rpc/rpc.h>
-#include <rpc/rpcsec_gss.h>
-#include "un-namespace.h"
-#include "rpc_com.h"
-#include "mt_misc.h"
-
-#define MCALL_MSG_SIZE 24
-
-struct cmessage {
- struct cmsghdr cmsg;
- struct cmsgcred cmcred;
-};
-
-static enum clnt_stat clnt_vc_call(CLIENT *, rpcproc_t, xdrproc_t, void *,
- xdrproc_t, void *, struct timeval);
-static void clnt_vc_geterr(CLIENT *, struct rpc_err *);
-static bool_t clnt_vc_freeres(CLIENT *, xdrproc_t, void *);
-static void clnt_vc_abort(CLIENT *);
-static bool_t clnt_vc_control(CLIENT *, u_int, void *);
-static void clnt_vc_destroy(CLIENT *);
-static struct clnt_ops *clnt_vc_ops(void);
-static bool_t time_not_ok(struct timeval *);
-static int read_vc(void *, void *, int);
-static int write_vc(void *, void *, int);
-static int __msgwrite(int, void *, size_t);
-static int __msgread(int, void *, size_t);
-
-struct ct_data {
- int ct_fd; /* connection's fd */
- bool_t ct_closeit; /* close it on destroy */
- struct timeval ct_wait; /* wait interval in milliseconds */
- bool_t ct_waitset; /* wait set by clnt_control? */
- struct netbuf ct_addr; /* remote addr */
- struct rpc_err ct_error;
- union {
- char ct_mcallc[MCALL_MSG_SIZE]; /* marshalled callmsg */
- u_int32_t ct_mcalli;
- } ct_u;
- u_int ct_mpos; /* pos after marshal */
- XDR ct_xdrs; /* XDR stream */
-};
-
-/*
- * This machinery implements per-fd locks for MT-safety. It is not
- * sufficient to do per-CLIENT handle locks for MT-safety because a
- * user may create more than one CLIENT handle with the same fd behind
- * it. Therfore, we allocate an array of flags (vc_fd_locks), protected
- * by the clnt_fd_lock mutex, and an array (vc_cv) of condition variables
- * similarly protected. Vc_fd_lock[fd] == 1 => a call is activte on some
- * CLIENT handle created for that fd.
- * The current implementation holds locks across the entire RPC and reply.
- * Yes, this is silly, and as soon as this code is proven to work, this
- * should be the first thing fixed. One step at a time.
- */
-static int *vc_fd_locks;
-static cond_t *vc_cv;
-#define release_fd_lock(fd, mask) { \
- mutex_lock(&clnt_fd_lock); \
- vc_fd_locks[fd] = 0; \
- mutex_unlock(&clnt_fd_lock); \
- thr_sigsetmask(SIG_SETMASK, &(mask), (sigset_t *) NULL); \
- cond_signal(&vc_cv[fd]); \
-}
-
-static const char clnt_vc_errstr[] = "%s : %s";
-static const char clnt_vc_str[] = "clnt_vc_create";
-static const char clnt_read_vc_str[] = "read_vc";
-static const char __no_mem_str[] = "out of memory";
-
-/*
- * Create a client handle for a connection.
- * Default options are set, which the user can change using clnt_control()'s.
- * The rpc/vc package does buffering similar to stdio, so the client
- * must pick send and receive buffer sizes, 0 => use the default.
- * NB: fd is copied into a private area.
- * NB: The rpch->cl_auth is set null authentication. Caller may wish to
- * set this something more useful.
- *
- * fd should be an open socket
- */
-CLIENT *
-clnt_vc_create(fd, raddr, prog, vers, sendsz, recvsz)
- int fd; /* open file descriptor */
- const struct netbuf *raddr; /* servers address */
- const rpcprog_t prog; /* program number */
- const rpcvers_t vers; /* version number */
- u_int sendsz; /* buffer recv size */
- u_int recvsz; /* buffer send size */
-{
- CLIENT *cl; /* client handle */
- struct ct_data *ct = NULL; /* client handle */
- struct timeval now;
- struct rpc_msg call_msg;
- static u_int32_t disrupt;
- sigset_t mask;
- sigset_t newmask;
- struct sockaddr_storage ss;
- socklen_t slen;
- struct __rpc_sockinfo si;
-
- if (disrupt == 0)
- disrupt = (u_int32_t)(long)raddr;
-
- cl = (CLIENT *)mem_alloc(sizeof (*cl));
- ct = (struct ct_data *)mem_alloc(sizeof (*ct));
- if ((cl == (CLIENT *)NULL) || (ct == (struct ct_data *)NULL)) {
- (void) syslog(LOG_ERR, clnt_vc_errstr,
- clnt_vc_str, __no_mem_str);
- rpc_createerr.cf_stat = RPC_SYSTEMERROR;
- rpc_createerr.cf_error.re_errno = errno;
- goto err;
- }
- ct->ct_addr.buf = NULL;
- sigfillset(&newmask);
- thr_sigsetmask(SIG_SETMASK, &newmask, &mask);
- mutex_lock(&clnt_fd_lock);
- if (vc_fd_locks == (int *) NULL) {
- int cv_allocsz, fd_allocsz;
- int dtbsize = __rpc_dtbsize();
-
- fd_allocsz = dtbsize * sizeof (int);
- vc_fd_locks = (int *) mem_alloc(fd_allocsz);
- if (vc_fd_locks == (int *) NULL) {
- mutex_unlock(&clnt_fd_lock);
- thr_sigsetmask(SIG_SETMASK, &(mask), NULL);
- goto err;
- } else
- memset(vc_fd_locks, '\0', fd_allocsz);
-
- assert(vc_cv == (cond_t *) NULL);
- cv_allocsz = dtbsize * sizeof (cond_t);
- vc_cv = (cond_t *) mem_alloc(cv_allocsz);
- if (vc_cv == (cond_t *) NULL) {
- mem_free(vc_fd_locks, fd_allocsz);
- vc_fd_locks = (int *) NULL;
- mutex_unlock(&clnt_fd_lock);
- thr_sigsetmask(SIG_SETMASK, &(mask), NULL);
- goto err;
- } else {
- int i;
-
- for (i = 0; i < dtbsize; i++)
- cond_init(&vc_cv[i], 0, (void *) 0);
- }
- } else
- assert(vc_cv != (cond_t *) NULL);
-
- /*
- * XXX - fvdl connecting while holding a mutex?
- */
- slen = sizeof ss;
- if (_getpeername(fd, (struct sockaddr *)(void *)&ss, &slen) < 0) {
- if (errno != ENOTCONN) {
- rpc_createerr.cf_stat = RPC_SYSTEMERROR;
- rpc_createerr.cf_error.re_errno = errno;
- mutex_unlock(&clnt_fd_lock);
- thr_sigsetmask(SIG_SETMASK, &(mask), NULL);
- goto err;
- }
- if (_connect(fd, (struct sockaddr *)raddr->buf, raddr->len) < 0){
- rpc_createerr.cf_stat = RPC_SYSTEMERROR;
- rpc_createerr.cf_error.re_errno = errno;
- mutex_unlock(&clnt_fd_lock);
- thr_sigsetmask(SIG_SETMASK, &(mask), NULL);
- goto err;
- }
- }
- mutex_unlock(&clnt_fd_lock);
- thr_sigsetmask(SIG_SETMASK, &(mask), NULL);
- if (!__rpc_fd2sockinfo(fd, &si))
- goto err;
-
- ct->ct_closeit = FALSE;
-
- /*
- * Set up private data struct
- */
- ct->ct_fd = fd;
- ct->ct_wait.tv_usec = 0;
- ct->ct_waitset = FALSE;
- ct->ct_addr.buf = malloc(raddr->maxlen);
- if (ct->ct_addr.buf == NULL)
- goto err;
- memcpy(ct->ct_addr.buf, raddr->buf, raddr->len);
- ct->ct_addr.len = raddr->maxlen;
- ct->ct_addr.maxlen = raddr->maxlen;
-
- /*
- * Initialize call message
- */
- (void)gettimeofday(&now, NULL);
- call_msg.rm_xid = ((u_int32_t)++disrupt) ^ __RPC_GETXID(&now);
- call_msg.rm_direction = CALL;
- call_msg.rm_call.cb_rpcvers = RPC_MSG_VERSION;
- call_msg.rm_call.cb_prog = (u_int32_t)prog;
- call_msg.rm_call.cb_vers = (u_int32_t)vers;
-
- /*
- * pre-serialize the static part of the call msg and stash it away
- */
- xdrmem_create(&(ct->ct_xdrs), ct->ct_u.ct_mcallc, MCALL_MSG_SIZE,
- XDR_ENCODE);
- if (! xdr_callhdr(&(ct->ct_xdrs), &call_msg)) {
- if (ct->ct_closeit) {
- (void)_close(fd);
- }
- goto err;
- }
- ct->ct_mpos = XDR_GETPOS(&(ct->ct_xdrs));
- XDR_DESTROY(&(ct->ct_xdrs));
- assert(ct->ct_mpos + sizeof(uint32_t) <= MCALL_MSG_SIZE);
-
- /*
- * Create a client handle which uses xdrrec for serialization
- * and authnone for authentication.
- */
- cl->cl_ops = clnt_vc_ops();
- cl->cl_private = ct;
- cl->cl_auth = authnone_create();
- sendsz = __rpc_get_t_size(si.si_af, si.si_proto, (int)sendsz);
- recvsz = __rpc_get_t_size(si.si_af, si.si_proto, (int)recvsz);
- xdrrec_create(&(ct->ct_xdrs), sendsz, recvsz,
- cl->cl_private, read_vc, write_vc);
- return (cl);
-
-err:
- if (cl) {
- if (ct) {
- if (ct->ct_addr.len)
- mem_free(ct->ct_addr.buf, ct->ct_addr.len);
- mem_free(ct, sizeof (struct ct_data));
- }
- if (cl)
- mem_free(cl, sizeof (CLIENT));
- }
- return ((CLIENT *)NULL);
-}
-
-static enum clnt_stat
-clnt_vc_call(cl, proc, xdr_args, args_ptr, xdr_results, results_ptr, timeout)
- CLIENT *cl;
- rpcproc_t proc;
- xdrproc_t xdr_args;
- void *args_ptr;
- xdrproc_t xdr_results;
- void *results_ptr;
- struct timeval timeout;
-{
- struct ct_data *ct = (struct ct_data *) cl->cl_private;
- XDR *xdrs = &(ct->ct_xdrs);
- struct rpc_msg reply_msg;
- u_int32_t x_id;
- u_int32_t *msg_x_id = &ct->ct_u.ct_mcalli; /* yuk */
- bool_t shipnow;
- int refreshes = 2;
- sigset_t mask, newmask;
- int rpc_lock_value;
- bool_t reply_stat;
-
- assert(cl != NULL);
-
- sigfillset(&newmask);
- thr_sigsetmask(SIG_SETMASK, &newmask, &mask);
- mutex_lock(&clnt_fd_lock);
- while (vc_fd_locks[ct->ct_fd])
- cond_wait(&vc_cv[ct->ct_fd], &clnt_fd_lock);
- if (__isthreaded)
- rpc_lock_value = 1;
- else
- rpc_lock_value = 0;
- vc_fd_locks[ct->ct_fd] = rpc_lock_value;
- mutex_unlock(&clnt_fd_lock);
- if (!ct->ct_waitset) {
- /* If time is not within limits, we ignore it. */
- if (time_not_ok(&timeout) == FALSE)
- ct->ct_wait = timeout;
- }
-
- shipnow =
- (xdr_results == NULL && timeout.tv_sec == 0
- && timeout.tv_usec == 0) ? FALSE : TRUE;
-
-call_again:
- xdrs->x_op = XDR_ENCODE;
- ct->ct_error.re_status = RPC_SUCCESS;
- x_id = ntohl(--(*msg_x_id));
-
- if (cl->cl_auth->ah_cred.oa_flavor != RPCSEC_GSS) {
- if ((! XDR_PUTBYTES(xdrs, ct->ct_u.ct_mcallc, ct->ct_mpos)) ||
- (! XDR_PUTINT32(xdrs, &proc)) ||
- (! AUTH_MARSHALL(cl->cl_auth, xdrs)) ||
- (! (*xdr_args)(xdrs, args_ptr))) {
- if (ct->ct_error.re_status == RPC_SUCCESS)
- ct->ct_error.re_status = RPC_CANTENCODEARGS;
- (void)xdrrec_endofrecord(xdrs, TRUE);
- release_fd_lock(ct->ct_fd, mask);
- return (ct->ct_error.re_status);
- }
- } else {
- *(uint32_t *) &ct->ct_u.ct_mcallc[ct->ct_mpos] = htonl(proc);
- if (! __rpc_gss_wrap(cl->cl_auth, ct->ct_u.ct_mcallc,
- ct->ct_mpos + sizeof(uint32_t),
- xdrs, xdr_args, args_ptr)) {
- if (ct->ct_error.re_status == RPC_SUCCESS)
- ct->ct_error.re_status = RPC_CANTENCODEARGS;
- (void)xdrrec_endofrecord(xdrs, TRUE);
- release_fd_lock(ct->ct_fd, mask);
- return (ct->ct_error.re_status);
- }
- }
- if (! xdrrec_endofrecord(xdrs, shipnow)) {
- release_fd_lock(ct->ct_fd, mask);
- return (ct->ct_error.re_status = RPC_CANTSEND);
- }
- if (! shipnow) {
- release_fd_lock(ct->ct_fd, mask);
- return (RPC_SUCCESS);
- }
- /*
- * Hack to provide rpc-based message passing
- */
- if (timeout.tv_sec == 0 && timeout.tv_usec == 0) {
- release_fd_lock(ct->ct_fd, mask);
- return(ct->ct_error.re_status = RPC_TIMEDOUT);
- }
-
-
- /*
- * Keep receiving until we get a valid transaction id
- */
- xdrs->x_op = XDR_DECODE;
- while (TRUE) {
- reply_msg.acpted_rply.ar_verf = _null_auth;
- reply_msg.acpted_rply.ar_results.where = NULL;
- reply_msg.acpted_rply.ar_results.proc = (xdrproc_t)xdr_void;
- if (! xdrrec_skiprecord(xdrs)) {
- release_fd_lock(ct->ct_fd, mask);
- return (ct->ct_error.re_status);
- }
- /* now decode and validate the response header */
- if (! xdr_replymsg(xdrs, &reply_msg)) {
- if (ct->ct_error.re_status == RPC_SUCCESS)
- continue;
- release_fd_lock(ct->ct_fd, mask);
- return (ct->ct_error.re_status);
- }
- if (reply_msg.rm_xid == x_id)
- break;
- }
-
- /*
- * process header
- */
- _seterr_reply(&reply_msg, &(ct->ct_error));
- if (ct->ct_error.re_status == RPC_SUCCESS) {
- if (! AUTH_VALIDATE(cl->cl_auth,
- &reply_msg.acpted_rply.ar_verf)) {
- ct->ct_error.re_status = RPC_AUTHERROR;
- ct->ct_error.re_why = AUTH_INVALIDRESP;
- } else {
- if (cl->cl_auth->ah_cred.oa_flavor != RPCSEC_GSS) {
- reply_stat = (*xdr_results)(xdrs, results_ptr);
- } else {
- reply_stat = __rpc_gss_unwrap(cl->cl_auth,
- xdrs, xdr_results, results_ptr);
- }
- if (! reply_stat) {
- if (ct->ct_error.re_status == RPC_SUCCESS)
- ct->ct_error.re_status =
- RPC_CANTDECODERES;
- }
- }
- /* free verifier ... */
- 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 (refreshes-- && AUTH_REFRESH(cl->cl_auth, &reply_msg))
- goto call_again;
- } /* end of unsuccessful completion */
- release_fd_lock(ct->ct_fd, mask);
- return (ct->ct_error.re_status);
-}
-
-static void
-clnt_vc_geterr(cl, errp)
- CLIENT *cl;
- struct rpc_err *errp;
-{
- struct ct_data *ct;
-
- assert(cl != NULL);
- assert(errp != NULL);
-
- ct = (struct ct_data *) cl->cl_private;
- *errp = ct->ct_error;
-}
-
-static bool_t
-clnt_vc_freeres(cl, xdr_res, res_ptr)
- CLIENT *cl;
- xdrproc_t xdr_res;
- void *res_ptr;
-{
- struct ct_data *ct;
- XDR *xdrs;
- bool_t dummy;
- sigset_t mask;
- sigset_t newmask;
-
- assert(cl != NULL);
-
- ct = (struct ct_data *)cl->cl_private;
- xdrs = &(ct->ct_xdrs);
-
- sigfillset(&newmask);
- thr_sigsetmask(SIG_SETMASK, &newmask, &mask);
- mutex_lock(&clnt_fd_lock);
- while (vc_fd_locks[ct->ct_fd])
- cond_wait(&vc_cv[ct->ct_fd], &clnt_fd_lock);
- xdrs->x_op = XDR_FREE;
- dummy = (*xdr_res)(xdrs, res_ptr);
- mutex_unlock(&clnt_fd_lock);
- thr_sigsetmask(SIG_SETMASK, &(mask), NULL);
- cond_signal(&vc_cv[ct->ct_fd]);
-
- return dummy;
-}
-
-/*ARGSUSED*/
-static void
-clnt_vc_abort(cl)
- CLIENT *cl;
-{
-}
-
-static bool_t
-clnt_vc_control(cl, request, info)
- CLIENT *cl;
- u_int request;
- void *info;
-{
- struct ct_data *ct;
- void *infop = info;
- sigset_t mask;
- sigset_t newmask;
- int rpc_lock_value;
-
- assert(cl != NULL);
-
- ct = (struct ct_data *)cl->cl_private;
-
- sigfillset(&newmask);
- thr_sigsetmask(SIG_SETMASK, &newmask, &mask);
- mutex_lock(&clnt_fd_lock);
- while (vc_fd_locks[ct->ct_fd])
- cond_wait(&vc_cv[ct->ct_fd], &clnt_fd_lock);
- if (__isthreaded)
- rpc_lock_value = 1;
- else
- rpc_lock_value = 0;
- vc_fd_locks[ct->ct_fd] = rpc_lock_value;
- mutex_unlock(&clnt_fd_lock);
-
- switch (request) {
- case CLSET_FD_CLOSE:
- ct->ct_closeit = TRUE;
- release_fd_lock(ct->ct_fd, mask);
- return (TRUE);
- case CLSET_FD_NCLOSE:
- ct->ct_closeit = FALSE;
- release_fd_lock(ct->ct_fd, mask);
- return (TRUE);
- default:
- break;
- }
-
- /* for other requests which use info */
- if (info == NULL) {
- release_fd_lock(ct->ct_fd, mask);
- return (FALSE);
- }
- switch (request) {
- case CLSET_TIMEOUT:
- if (time_not_ok((struct timeval *)info)) {
- release_fd_lock(ct->ct_fd, mask);
- return (FALSE);
- }
- ct->ct_wait = *(struct timeval *)infop;
- ct->ct_waitset = TRUE;
- break;
- case CLGET_TIMEOUT:
- *(struct timeval *)infop = ct->ct_wait;
- break;
- case CLGET_SERVER_ADDR:
- (void) memcpy(info, ct->ct_addr.buf, (size_t)ct->ct_addr.len);
- break;
- case CLGET_FD:
- *(int *)info = ct->ct_fd;
- break;
- case CLGET_SVC_ADDR:
- /* The caller should not free this memory area */
- *(struct netbuf *)info = ct->ct_addr;
- break;
- case CLSET_SVC_ADDR: /* set to new address */
- release_fd_lock(ct->ct_fd, mask);
- return (FALSE);
- 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_int32_t *)info =
- ntohl(*(u_int32_t *)(void *)&ct->ct_u.ct_mcalli);
- break;
- case CLSET_XID:
- /* This will set the xid of the NEXT call */
- *(u_int32_t *)(void *)&ct->ct_u.ct_mcalli =
- htonl(*((u_int32_t *)info) + 1);
- /* increment by 1 as clnt_vc_call() decrements once */
- break;
- 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_int32_t *)info =
- ntohl(*(u_int32_t *)(void *)(ct->ct_u.ct_mcallc +
- 4 * BYTES_PER_XDR_UNIT));
- break;
-
- case CLSET_VERS:
- *(u_int32_t *)(void *)(ct->ct_u.ct_mcallc +
- 4 * BYTES_PER_XDR_UNIT) =
- htonl(*(u_int32_t *)info);
- break;
-
- case CLGET_PROG:
- /*
- * This RELIES on the information that, in the call body,
- * the program number field is the fourth field from the
- * begining of the RPC header. MUST be changed if the
- * call_struct is changed
- */
- *(u_int32_t *)info =
- ntohl(*(u_int32_t *)(void *)(ct->ct_u.ct_mcallc +
- 3 * BYTES_PER_XDR_UNIT));
- break;
-
- case CLSET_PROG:
- *(u_int32_t *)(void *)(ct->ct_u.ct_mcallc +
- 3 * BYTES_PER_XDR_UNIT) =
- htonl(*(u_int32_t *)info);
- break;
-
- default:
- release_fd_lock(ct->ct_fd, mask);
- return (FALSE);
- }
- release_fd_lock(ct->ct_fd, mask);
- return (TRUE);
-}
-
-
-static void
-clnt_vc_destroy(cl)
- CLIENT *cl;
-{
- struct ct_data *ct = (struct ct_data *) cl->cl_private;
- int ct_fd = ct->ct_fd;
- sigset_t mask;
- sigset_t newmask;
-
- assert(cl != NULL);
-
- ct = (struct ct_data *) cl->cl_private;
-
- sigfillset(&newmask);
- thr_sigsetmask(SIG_SETMASK, &newmask, &mask);
- mutex_lock(&clnt_fd_lock);
- while (vc_fd_locks[ct_fd])
- cond_wait(&vc_cv[ct_fd], &clnt_fd_lock);
- if (ct->ct_closeit && ct->ct_fd != -1) {
- (void)_close(ct->ct_fd);
- }
- XDR_DESTROY(&(ct->ct_xdrs));
- if (ct->ct_addr.buf)
- free(ct->ct_addr.buf);
- mem_free(ct, sizeof(struct ct_data));
- mem_free(cl, sizeof(CLIENT));
- mutex_unlock(&clnt_fd_lock);
- thr_sigsetmask(SIG_SETMASK, &(mask), NULL);
- cond_signal(&vc_cv[ct_fd]);
-}
-
-/*
- * Interface between xdr serializer and tcp connection.
- * Behaves like the system calls, read & write, but keeps some error state
- * around for the rpc level.
- */
-static int
-read_vc(ctp, buf, len)
- void *ctp;
- void *buf;
- int len;
-{
- struct sockaddr sa;
- socklen_t sal;
- struct ct_data *ct = (struct ct_data *)ctp;
- struct pollfd fd;
- int milliseconds = (int)((ct->ct_wait.tv_sec * 1000) +
- (ct->ct_wait.tv_usec / 1000));
-
- if (len == 0)
- return (0);
- fd.fd = ct->ct_fd;
- fd.events = POLLIN;
- for (;;) {
- switch (_poll(&fd, 1, milliseconds)) {
- case 0:
- ct->ct_error.re_status = RPC_TIMEDOUT;
- return (-1);
-
- case -1:
- if (errno == EINTR)
- continue;
- ct->ct_error.re_status = RPC_CANTRECV;
- ct->ct_error.re_errno = errno;
- return (-1);
- }
- break;
- }
-
- sal = sizeof(sa);
- if ((_getpeername(ct->ct_fd, &sa, &sal) == 0) &&
- (sa.sa_family == AF_LOCAL)) {
- len = __msgread(ct->ct_fd, buf, (size_t)len);
- } else {
- len = _read(ct->ct_fd, buf, (size_t)len);
- }
-
- switch (len) {
- case 0:
- /* premature eof */
- ct->ct_error.re_errno = ECONNRESET;
- ct->ct_error.re_status = RPC_CANTRECV;
- len = -1; /* it's really an error */
- break;
-
- case -1:
- ct->ct_error.re_errno = errno;
- ct->ct_error.re_status = RPC_CANTRECV;
- break;
- }
- return (len);
-}
-
-static int
-write_vc(ctp, buf, len)
- void *ctp;
- void *buf;
- int len;
-{
- struct sockaddr sa;
- socklen_t sal;
- struct ct_data *ct = (struct ct_data *)ctp;
- int i, cnt;
-
- sal = sizeof(sa);
- if ((_getpeername(ct->ct_fd, &sa, &sal) == 0) &&
- (sa.sa_family == AF_LOCAL)) {
- for (cnt = len; cnt > 0; cnt -= i, buf = (char *)buf + i) {
- if ((i = __msgwrite(ct->ct_fd, buf,
- (size_t)cnt)) == -1) {
- ct->ct_error.re_errno = errno;
- ct->ct_error.re_status = RPC_CANTSEND;
- return (-1);
- }
- }
- } else {
- for (cnt = len; cnt > 0; cnt -= i, buf = (char *)buf + i) {
- if ((i = _write(ct->ct_fd, buf, (size_t)cnt)) == -1) {
- ct->ct_error.re_errno = errno;
- ct->ct_error.re_status = RPC_CANTSEND;
- return (-1);
- }
- }
- }
- return (len);
-}
-
-static struct clnt_ops *
-clnt_vc_ops()
-{
- static struct clnt_ops ops;
- sigset_t mask, newmask;
-
- /* VARIABLES PROTECTED BY ops_lock: ops */
-
- sigfillset(&newmask);
- thr_sigsetmask(SIG_SETMASK, &newmask, &mask);
- mutex_lock(&ops_lock);
- if (ops.cl_call == NULL) {
- ops.cl_call = clnt_vc_call;
- ops.cl_abort = clnt_vc_abort;
- ops.cl_geterr = clnt_vc_geterr;
- ops.cl_freeres = clnt_vc_freeres;
- ops.cl_destroy = clnt_vc_destroy;
- ops.cl_control = clnt_vc_control;
- }
- mutex_unlock(&ops_lock);
- thr_sigsetmask(SIG_SETMASK, &(mask), NULL);
- return (&ops);
-}
-
-/*
- * Make sure that the time is not garbage. -1 value is disallowed.
- * Note this is different from time_not_ok in clnt_dg.c
- */
-static bool_t
-time_not_ok(t)
- struct timeval *t;
-{
- return (t->tv_sec <= -1 || t->tv_sec > 100000000 ||
- t->tv_usec <= -1 || t->tv_usec > 1000000);
-}
-
-static int
-__msgread(sock, buf, cnt)
- int sock;
- void *buf;
- size_t cnt;
-{
- struct iovec iov[1];
- struct msghdr msg;
- union {
- struct cmsghdr cmsg;
- char control[CMSG_SPACE(sizeof(struct cmsgcred))];
- } cm;
-
- bzero((char *)&cm, sizeof(cm));
- iov[0].iov_base = buf;
- iov[0].iov_len = cnt;
-
- msg.msg_iov = iov;
- msg.msg_iovlen = 1;
- msg.msg_name = NULL;
- msg.msg_namelen = 0;
- msg.msg_control = (caddr_t)&cm;
- msg.msg_controllen = CMSG_SPACE(sizeof(struct cmsgcred));
- msg.msg_flags = 0;
-
- return(_recvmsg(sock, &msg, 0));
-}
-
-static int
-__msgwrite(sock, buf, cnt)
- int sock;
- void *buf;
- size_t cnt;
-{
- struct iovec iov[1];
- struct msghdr msg;
- union {
- struct cmsghdr cmsg;
- char control[CMSG_SPACE(sizeof(struct cmsgcred))];
- } cm;
-
- bzero((char *)&cm, sizeof(cm));
- iov[0].iov_base = buf;
- iov[0].iov_len = cnt;
-
- cm.cmsg.cmsg_type = SCM_CREDS;
- cm.cmsg.cmsg_level = SOL_SOCKET;
- cm.cmsg.cmsg_len = CMSG_LEN(sizeof(struct cmsgcred));
-
- msg.msg_iov = iov;
- msg.msg_iovlen = 1;
- msg.msg_name = NULL;
- msg.msg_namelen = 0;
- msg.msg_control = (caddr_t)&cm;
- msg.msg_controllen = CMSG_SPACE(sizeof(struct cmsgcred));
- msg.msg_flags = 0;
-
- return(_sendmsg(sock, &msg, 0));
-}
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