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-rw-r--r--libc/inet/rpc/svc_udp.c782
1 files changed, 460 insertions, 322 deletions
diff --git a/libc/inet/rpc/svc_udp.c b/libc/inet/rpc/svc_udp.c
index 0004acedc..98f935961 100644
--- a/libc/inet/rpc/svc_udp.c
+++ b/libc/inet/rpc/svc_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[] = "@(#)svc_udp.c 1.24 87/08/11 Copyr 1984 Sun Micro";
+#endif
/*
* svc_udp.c,
@@ -38,54 +39,69 @@
* Copyright (C) 1984, Sun Microsystems, Inc.
*/
+#define __FORCE_GLIBC
+#define _GNU_SOURCE
+#include <features.h>
+
#include <stdio.h>
+#include <unistd.h>
+#include <string.h>
#include <rpc/rpc.h>
#include <sys/socket.h>
#include <errno.h>
-#include <unistd.h>
+#ifdef IP_PKTINFO
+#include <sys/uio.h>
+#endif
+
+#ifdef USE_IN_LIBIO
+# include <wchar.h>
+# include <libio/iolibio.h>
+# define fputs(s, f) _IO_fputs (s, f)
+#endif
#define rpc_buffer(xprt) ((xprt)->xp_p1)
#ifndef MAX
#define MAX(a, b) ((a > b) ? a : b)
#endif
-static bool_t svcudp_recv();
-static bool_t svcudp_reply();
-static enum xprt_stat svcudp_stat();
-static bool_t svcudp_getargs();
-static bool_t svcudp_freeargs();
-static void svcudp_destroy();
-
-static void cache_set(SVCXPRT *xprt, u_long replylen);
-static int cache_get(SVCXPRT *xprt, struct rpc_msg *msg,
- char **replyp, u_long *replylenp);
-
-static struct xp_ops svcudp_op = {
- svcudp_recv,
- svcudp_stat,
- svcudp_getargs,
- svcudp_reply,
- svcudp_freeargs,
- svcudp_destroy
+static bool_t svcudp_recv (SVCXPRT *, struct rpc_msg *);
+static bool_t svcudp_reply (SVCXPRT *, struct rpc_msg *);
+static enum xprt_stat svcudp_stat (SVCXPRT *);
+static bool_t svcudp_getargs (SVCXPRT *, xdrproc_t, caddr_t);
+static bool_t svcudp_freeargs (SVCXPRT *, xdrproc_t, caddr_t);
+static void svcudp_destroy (SVCXPRT *);
+
+static const struct xp_ops svcudp_op =
+{
+ svcudp_recv,
+ svcudp_stat,
+ svcudp_getargs,
+ svcudp_reply,
+ svcudp_freeargs,
+ svcudp_destroy
};
+static int cache_get (SVCXPRT *, struct rpc_msg *, char **replyp,
+ u_long *replylenp);
+static void cache_set (SVCXPRT *xprt, u_long replylen);
+
/*
* kept in xprt->xp_p2
*/
-struct svcudp_data {
- u_int su_iosz; /* byte size of send.recv buffer */
- u_long su_xid; /* transaction id */
- XDR su_xdrs; /* XDR handle */
- char su_verfbody[MAX_AUTH_BYTES]; /* verifier body */
- char *su_cache; /* cached data, NULL if no cache */
-};
-
+struct svcudp_data
+ {
+ u_int su_iosz; /* byte size of send.recv buffer */
+ u_long su_xid; /* transaction id */
+ XDR su_xdrs; /* XDR handle */
+ char su_verfbody[MAX_AUTH_BYTES]; /* verifier body */
+ char *su_cache; /* cached data, NULL if no cache */
+ };
#define su_data(xprt) ((struct svcudp_data *)(xprt->xp_p2))
/*
* Usage:
- * xprt = svcudp_create(sock);
+ * xprt = svcudp_create(sock);
*
* If sock<0 then a socket is created, else sock is used.
* If the socket, sock is not bound to a port then svcudp_create
@@ -96,170 +112,272 @@ struct svcudp_data {
* see (svc.h, xprt_register).
* The routines returns NULL if a problem occurred.
*/
-SVCXPRT *svcudp_bufcreate(sock, sendsz, recvsz)
-register int sock;
-u_int sendsz, recvsz;
+SVCXPRT *
+svcudp_bufcreate (sock, sendsz, recvsz)
+ int sock;
+ u_int sendsz, recvsz;
{
- bool_t madesock = FALSE;
- register SVCXPRT *xprt;
- register struct svcudp_data *su;
- struct sockaddr_in addr;
- int len = sizeof(struct sockaddr_in);
-
- if (sock == RPC_ANYSOCK) {
- if ((sock = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP)) < 0) {
- perror("svcudp_create: socket creation problem");
- return ((SVCXPRT *) NULL);
- }
- madesock = TRUE;
- }
- bzero((char *) &addr, sizeof(addr));
- addr.sin_family = AF_INET;
- if (bindresvport(sock, &addr)) {
- addr.sin_port = 0;
- (void) bind(sock, (struct sockaddr *) &addr, len);
- }
- if (getsockname(sock, (struct sockaddr *) &addr, &len) != 0) {
- perror("svcudp_create - cannot getsockname");
- if (madesock)
- (void) close(sock);
- return ((SVCXPRT *) NULL);
- }
- xprt = (SVCXPRT *) mem_alloc(sizeof(SVCXPRT));
- if (xprt == NULL) {
- (void) fprintf(stderr, "svcudp_create: out of memory\n");
- return (NULL);
- }
- su = (struct svcudp_data *) mem_alloc(sizeof(*su));
- if (su == NULL) {
- (void) fprintf(stderr, "svcudp_create: out of memory\n");
- return (NULL);
+ bool_t madesock = FALSE;
+ SVCXPRT *xprt;
+ struct svcudp_data *su;
+ struct sockaddr_in addr;
+ socklen_t len = sizeof (struct sockaddr_in);
+ int pad;
+ void *buf;
+
+ if (sock == RPC_ANYSOCK)
+ {
+ if ((sock = socket (AF_INET, SOCK_DGRAM, IPPROTO_UDP)) < 0)
+ {
+ perror (_("svcudp_create: socket creation problem"));
+ return (SVCXPRT *) NULL;
}
- su->su_iosz = ((MAX(sendsz, recvsz) + 3) / 4) * 4;
- if ((rpc_buffer(xprt) = mem_alloc(su->su_iosz)) == NULL) {
- (void) fprintf(stderr, "svcudp_create: out of memory\n");
- return (NULL);
- }
- xdrmem_create(&(su->su_xdrs), rpc_buffer(xprt), su->su_iosz,
- XDR_DECODE);
- su->su_cache = NULL;
- xprt->xp_p2 = (caddr_t) su;
- xprt->xp_verf.oa_base = su->su_verfbody;
- xprt->xp_ops = &svcudp_op;
- xprt->xp_port = ntohs(addr.sin_port);
- xprt->xp_sock = sock;
- xprt_register(xprt);
- return (xprt);
+ madesock = TRUE;
+ }
+ bzero ((char *) &addr, sizeof (addr));
+ addr.sin_family = AF_INET;
+ if (bindresvport (sock, &addr))
+ {
+ addr.sin_port = 0;
+ (void) bind (sock, (struct sockaddr *) &addr, len);
+ }
+ if (getsockname (sock, (struct sockaddr *) &addr, &len) != 0)
+ {
+ perror (_("svcudp_create - cannot getsockname"));
+ if (madesock)
+ (void) close (sock);
+ return (SVCXPRT *) NULL;
+ }
+ xprt = (SVCXPRT *) mem_alloc (sizeof (SVCXPRT));
+ su = (struct svcudp_data *) mem_alloc (sizeof (*su));
+ buf = mem_alloc (((MAX (sendsz, recvsz) + 3) / 4) * 4);
+ if (xprt == NULL || su == NULL || buf == NULL)
+ {
+#ifdef USE_IN_LIBIO
+ if (_IO_fwide (stderr, 0) > 0)
+ (void) __fwprintf (stderr, L"%s", _("svcudp_create: out of memory\n"));
+ else
+#endif
+ (void) fputs (_("svcudp_create: out of memory\n"), stderr);
+ mem_free (xprt, sizeof (SVCXPRT));
+ mem_free (su, sizeof (*su));
+ mem_free (buf, ((MAX (sendsz, recvsz) + 3) / 4) * 4);
+ return NULL;
+ }
+ su->su_iosz = ((MAX (sendsz, recvsz) + 3) / 4) * 4;
+ rpc_buffer (xprt) = buf;
+ xdrmem_create (&(su->su_xdrs), rpc_buffer (xprt), su->su_iosz, XDR_DECODE);
+ su->su_cache = NULL;
+ xprt->xp_p2 = (caddr_t) su;
+ xprt->xp_verf.oa_base = su->su_verfbody;
+ xprt->xp_ops = &svcudp_op;
+ xprt->xp_port = ntohs (addr.sin_port);
+ xprt->xp_sock = sock;
+
+#ifdef IP_PKTINFO
+ if ((sizeof (struct iovec) + sizeof (struct msghdr)
+ + sizeof(struct cmsghdr) + sizeof (struct in_pktinfo))
+ > sizeof (xprt->xp_pad))
+ {
+# ifdef USE_IN_LIBIO
+ if (_IO_fwide (stderr, 0) > 0)
+ (void) __fwprintf (stderr, L"%s",
+ _("svcudp_create: xp_pad is too small for IP_PKTINFO\n"));
+ else
+# endif
+ (void) fputs (_("svcudp_create: xp_pad is too small for IP_PKTINFO\n"),
+ stderr);
+ return NULL;
+ }
+ pad = 1;
+ if (setsockopt (sock, SOL_IP, IP_PKTINFO, (void *) &pad,
+ sizeof (pad)) == 0)
+ /* Set the padding to all 1s. */
+ pad = 0xff;
+ else
+#endif
+ /* Clear the padding. */
+ pad = 0;
+ memset (&xprt->xp_pad [0], pad, sizeof (xprt->xp_pad));
+
+ xprt_register (xprt);
+ return xprt;
}
-SVCXPRT *svcudp_create(sock)
-int sock;
+SVCXPRT *
+svcudp_create (sock)
+ int sock;
{
- return (svcudp_bufcreate(sock, UDPMSGSIZE, UDPMSGSIZE));
+ return svcudp_bufcreate (sock, UDPMSGSIZE, UDPMSGSIZE);
}
-static enum xprt_stat svcudp_stat(xprt)
-SVCXPRT *xprt;
+static enum xprt_stat
+svcudp_stat (xprt)
+ SVCXPRT *xprt;
{
- return (XPRT_IDLE);
+ return XPRT_IDLE;
}
-static bool_t svcudp_recv(xprt, msg)
-register SVCXPRT *xprt;
-struct rpc_msg *msg;
+static bool_t
+svcudp_recv (xprt, msg)
+ SVCXPRT *xprt;
+ struct rpc_msg *msg;
{
- register struct svcudp_data *su = su_data(xprt);
- register XDR *xdrs = &(su->su_xdrs);
- register int rlen;
- char *reply;
- u_long replylen;
-
- again:
- xprt->xp_addrlen = sizeof(struct sockaddr_in);
-
- rlen = recvfrom(xprt->xp_sock, rpc_buffer(xprt), (int) su->su_iosz,
- 0, (struct sockaddr *) &(xprt->xp_raddr),
- &(xprt->xp_addrlen));
- if (rlen == -1 && errno == EINTR)
- goto again;
- if (rlen < 4 * sizeof(u_long))
- return (FALSE);
- xdrs->x_op = XDR_DECODE;
- XDR_SETPOS(xdrs, 0);
- if (!xdr_callmsg(xdrs, msg))
- return (FALSE);
- su->su_xid = msg->rm_xid;
- if (su->su_cache != NULL) {
- if (cache_get(xprt, msg, &reply, &replylen)) {
- (void) sendto(xprt->xp_sock, reply, (int) replylen, 0,
- (struct sockaddr *) &xprt->xp_raddr,
- xprt->xp_addrlen);
- return (TRUE);
- }
+ struct svcudp_data *su = su_data (xprt);
+ XDR *xdrs = &(su->su_xdrs);
+ int rlen;
+ char *reply;
+ u_long replylen;
+ socklen_t len;
+
+ /* It is very tricky when you have IP aliases. We want to make sure
+ that we are sending the packet from the IP address where the
+ incoming packet is addressed to. H.J. */
+#ifdef IP_PKTINFO
+ struct iovec *iovp;
+ struct msghdr *mesgp;
+#endif
+
+again:
+ /* FIXME -- should xp_addrlen be a size_t? */
+ len = (socklen_t) sizeof(struct sockaddr_in);
+#ifdef IP_PKTINFO
+ iovp = (struct iovec *) &xprt->xp_pad [0];
+ mesgp = (struct msghdr *) &xprt->xp_pad [sizeof (struct iovec)];
+ if (mesgp->msg_iovlen)
+ {
+ iovp->iov_base = rpc_buffer (xprt);
+ iovp->iov_len = su->su_iosz;
+ mesgp->msg_iov = iovp;
+ mesgp->msg_iovlen = 1;
+ mesgp->msg_name = &(xprt->xp_raddr);
+ mesgp->msg_namelen = len;
+ mesgp->msg_control = &xprt->xp_pad [sizeof (struct iovec)
+ + sizeof (struct msghdr)];
+ mesgp->msg_controllen = sizeof(xprt->xp_pad)
+ - sizeof (struct iovec) - sizeof (struct msghdr);
+ rlen = recvmsg (xprt->xp_sock, mesgp, 0);
+ if (rlen >= 0)
+ len = mesgp->msg_namelen;
+ }
+ else
+#endif
+ rlen = recvfrom (xprt->xp_sock, rpc_buffer (xprt),
+ (int) su->su_iosz, 0,
+ (struct sockaddr *) &(xprt->xp_raddr), &len);
+ xprt->xp_addrlen = len;
+ if (rlen == -1 && errno == EINTR)
+ goto again;
+ if (rlen < 16) /* < 4 32-bit ints? */
+ return FALSE;
+ xdrs->x_op = XDR_DECODE;
+ XDR_SETPOS (xdrs, 0);
+ if (!xdr_callmsg (xdrs, msg))
+ return FALSE;
+ su->su_xid = msg->rm_xid;
+ if (su->su_cache != NULL)
+ {
+ if (cache_get (xprt, msg, &reply, &replylen))
+ {
+#ifdef IP_PKTINFO
+ if (mesgp->msg_iovlen)
+ {
+ iovp->iov_base = reply;
+ iovp->iov_len = replylen;
+ (void) sendmsg (xprt->xp_sock, mesgp, 0);
+ }
+ else
+#endif
+ (void) sendto (xprt->xp_sock, reply, (int) replylen, 0,
+ (struct sockaddr *) &xprt->xp_raddr, len);
+ return TRUE;
}
- return (TRUE);
+ }
+ return TRUE;
}
-static bool_t svcudp_reply(xprt, msg)
-register SVCXPRT *xprt;
-struct rpc_msg *msg;
+static bool_t
+svcudp_reply (xprt, msg)
+ SVCXPRT *xprt;
+ struct rpc_msg *msg;
{
- register struct svcudp_data *su = su_data(xprt);
- register XDR *xdrs = &(su->su_xdrs);
- register int slen;
- register bool_t stat = FALSE;
-
- xdrs->x_op = XDR_ENCODE;
- XDR_SETPOS(xdrs, 0);
- msg->rm_xid = su->su_xid;
- if (xdr_replymsg(xdrs, msg)) {
- slen = (int) XDR_GETPOS(xdrs);
- if (sendto(xprt->xp_sock, rpc_buffer(xprt), slen, 0,
- (struct sockaddr *) &(xprt->xp_raddr), xprt->xp_addrlen)
- == slen) {
- stat = TRUE;
- if (su->su_cache && slen >= 0) {
- cache_set(xprt, (u_long) slen);
- }
- }
+ struct svcudp_data *su = su_data (xprt);
+ XDR *xdrs = &(su->su_xdrs);
+ int slen, sent;
+ bool_t stat = FALSE;
+#ifdef IP_PKTINFO
+ struct iovec *iovp;
+ struct msghdr *mesgp;
+#endif
+
+ xdrs->x_op = XDR_ENCODE;
+ XDR_SETPOS (xdrs, 0);
+ msg->rm_xid = su->su_xid;
+ if (xdr_replymsg (xdrs, msg))
+ {
+ slen = (int) XDR_GETPOS (xdrs);
+#ifdef IP_PKTINFO
+ mesgp = (struct msghdr *) &xprt->xp_pad [sizeof (struct iovec)];
+ if (mesgp->msg_iovlen)
+ {
+ iovp = (struct iovec *) &xprt->xp_pad [0];
+ iovp->iov_base = rpc_buffer (xprt);
+ iovp->iov_len = slen;
+ sent = sendmsg (xprt->xp_sock, mesgp, 0);
}
- return (stat);
+ else
+#endif
+ sent = sendto (xprt->xp_sock, rpc_buffer (xprt), slen, 0,
+ (struct sockaddr *) &(xprt->xp_raddr),
+ xprt->xp_addrlen);
+ if (sent == slen)
+ {
+ stat = TRUE;
+ if (su->su_cache && slen >= 0)
+ {
+ cache_set (xprt, (u_long) slen);
+ }
+ }
+ }
+ return stat;
}
-static bool_t svcudp_getargs(xprt, xdr_args, args_ptr)
-SVCXPRT *xprt;
-xdrproc_t xdr_args;
-caddr_t args_ptr;
+static bool_t
+svcudp_getargs (xprt, xdr_args, args_ptr)
+ SVCXPRT *xprt;
+ xdrproc_t xdr_args;
+ caddr_t args_ptr;
{
- return ((*xdr_args) (&(su_data(xprt)->su_xdrs), args_ptr));
+ return (*xdr_args) (&(su_data (xprt)->su_xdrs), args_ptr);
}
-static bool_t svcudp_freeargs(xprt, xdr_args, args_ptr)
-SVCXPRT *xprt;
-xdrproc_t xdr_args;
-caddr_t args_ptr;
+static bool_t
+svcudp_freeargs (xprt, xdr_args, args_ptr)
+ SVCXPRT *xprt;
+ xdrproc_t xdr_args;
+ caddr_t args_ptr;
{
- register XDR *xdrs = &(su_data(xprt)->su_xdrs);
+ XDR *xdrs = &(su_data (xprt)->su_xdrs);
- xdrs->x_op = XDR_FREE;
- return ((*xdr_args) (xdrs, args_ptr));
+ xdrs->x_op = XDR_FREE;
+ return (*xdr_args) (xdrs, args_ptr);
}
-static void svcudp_destroy(xprt)
-register SVCXPRT *xprt;
+static void
+svcudp_destroy (xprt)
+ SVCXPRT *xprt;
{
- register struct svcudp_data *su = su_data(xprt);
-
- xprt_unregister(xprt);
- (void) close(xprt->xp_sock);
- XDR_DESTROY(&(su->su_xdrs));
- mem_free(rpc_buffer(xprt), su->su_iosz);
- mem_free((caddr_t) su, sizeof(struct svcudp_data));
-
- mem_free((caddr_t) xprt, sizeof(SVCXPRT));
+ struct svcudp_data *su = su_data (xprt);
+
+ xprt_unregister (xprt);
+ (void) close (xprt->xp_sock);
+ XDR_DESTROY (&(su->su_xdrs));
+ mem_free (rpc_buffer (xprt), su->su_iosz);
+ mem_free ((caddr_t) su, sizeof (struct svcudp_data));
+ mem_free ((caddr_t) xprt, sizeof (SVCXPRT));
}
@@ -271,10 +389,18 @@ register SVCXPRT *xprt;
* Buffers are sent again if retransmissions are detected.
*/
-#define SPARSENESS 4 /* 75% sparse */
+#define SPARSENESS 4 /* 75% sparse */
-#define CACHE_PERROR(msg) \
+#ifdef USE_IN_LIBIO
+# define CACHE_PERROR(msg) \
+ if (_IO_fwide (stderr, 0) > 0) \
+ (void) __fwprintf(stderr, L"%s\n", msg); \
+ else \
+ (void) fprintf(stderr, "%s\n", msg)
+#else
+# define CACHE_PERROR(msg) \
(void) fprintf(stderr,"%s\n", msg)
+#endif
#define ALLOC(type, size) \
(type *) mem_alloc((unsigned) (sizeof(type) * (size)))
@@ -286,41 +412,43 @@ register SVCXPRT *xprt;
* An entry in the cache
*/
typedef struct cache_node *cache_ptr;
-struct cache_node {
- /*
- * Index into cache is xid, proc, vers, prog and address
- */
- u_long cache_xid;
- u_long cache_proc;
- u_long cache_vers;
- u_long cache_prog;
- struct sockaddr_in cache_addr;
- /*
- * The cached reply and length
- */
- char *cache_reply;
- u_long cache_replylen;
- /*
- * Next node on the list, if there is a collision
- */
- cache_ptr cache_next;
-};
+struct cache_node
+ {
+ /*
+ * Index into cache is xid, proc, vers, prog and address
+ */
+ u_long cache_xid;
+ u_long cache_proc;
+ u_long cache_vers;
+ u_long cache_prog;
+ struct sockaddr_in cache_addr;
+ /*
+ * The cached reply and length
+ */
+ char *cache_reply;
+ u_long cache_replylen;
+ /*
+ * Next node on the list, if there is a collision
+ */
+ cache_ptr cache_next;
+ };
/*
* The entire cache
*/
-struct udp_cache {
- u_long uc_size; /* size of cache */
- cache_ptr *uc_entries; /* hash table of entries in cache */
- cache_ptr *uc_fifo; /* fifo list of entries in cache */
- u_long uc_nextvictim; /* points to next victim in fifo list */
- u_long uc_prog; /* saved program number */
- u_long uc_vers; /* saved version number */
- u_long uc_proc; /* saved procedure number */
- struct sockaddr_in uc_addr; /* saved caller's address */
-};
+struct udp_cache
+ {
+ u_long uc_size; /* size of cache */
+ cache_ptr *uc_entries; /* hash table of entries in cache */
+ cache_ptr *uc_fifo; /* fifo list of entries in cache */
+ u_long uc_nextvictim; /* points to next victim in fifo list */
+ u_long uc_prog; /* saved program number */
+ u_long uc_vers; /* saved version number */
+ u_long uc_proc; /* saved procedure number */
+ struct sockaddr_in uc_addr; /* saved caller's address */
+ };
/*
@@ -331,144 +459,154 @@ struct udp_cache {
/*
- * Enable use of the cache.
+ * Enable use of the cache.
* Note: there is no disable.
*/
-int svcudp_enablecache(transp, size)
-SVCXPRT *transp;
-u_long size;
+int
+svcudp_enablecache (SVCXPRT *transp, u_long size)
{
- struct svcudp_data *su = su_data(transp);
- struct udp_cache *uc;
-
- if (su->su_cache != NULL) {
- CACHE_PERROR("enablecache: cache already enabled");
- return (0);
- }
- uc = ALLOC(struct udp_cache, 1);
- if (uc == NULL) {
- CACHE_PERROR("enablecache: could not allocate cache");
- return (0);
- }
- uc->uc_size = size;
- uc->uc_nextvictim = 0;
- uc->uc_entries = ALLOC(cache_ptr, size * SPARSENESS);
- if (uc->uc_entries == NULL) {
- CACHE_PERROR("enablecache: could not allocate cache data");
- return (0);
- }
- BZERO(uc->uc_entries, cache_ptr, size * SPARSENESS);
- uc->uc_fifo = ALLOC(cache_ptr, size);
- if (uc->uc_fifo == NULL) {
- CACHE_PERROR("enablecache: could not allocate cache fifo");
- return (0);
- }
- BZERO(uc->uc_fifo, cache_ptr, size);
- su->su_cache = (char *) uc;
- return (1);
+ struct svcudp_data *su = su_data (transp);
+ struct udp_cache *uc;
+
+ if (su->su_cache != NULL)
+ {
+ CACHE_PERROR (_("enablecache: cache already enabled"));
+ return 0;
+ }
+ uc = ALLOC (struct udp_cache, 1);
+ if (uc == NULL)
+ {
+ CACHE_PERROR (_("enablecache: could not allocate cache"));
+ return 0;
+ }
+ uc->uc_size = size;
+ uc->uc_nextvictim = 0;
+ uc->uc_entries = ALLOC (cache_ptr, size * SPARSENESS);
+ if (uc->uc_entries == NULL)
+ {
+ CACHE_PERROR (_("enablecache: could not allocate cache data"));
+ return 0;
+ }
+ BZERO (uc->uc_entries, cache_ptr, size * SPARSENESS);
+ uc->uc_fifo = ALLOC (cache_ptr, size);
+ if (uc->uc_fifo == NULL)
+ {
+ CACHE_PERROR (_("enablecache: could not allocate cache fifo"));
+ return 0;
+ }
+ BZERO (uc->uc_fifo, cache_ptr, size);
+ su->su_cache = (char *) uc;
+ return 1;
}
/*
* Set an entry in the cache
*/
-static void cache_set(xprt, replylen)
-SVCXPRT *xprt;
-u_long replylen;
+static void
+cache_set (SVCXPRT *xprt, u_long replylen)
{
- register cache_ptr victim;
- register cache_ptr *vicp;
- register struct svcudp_data *su = su_data(xprt);
- struct udp_cache *uc = (struct udp_cache *) su->su_cache;
- u_int loc;
- char *newbuf;
-
- /*
- * Find space for the new entry, either by
- * reusing an old entry, or by mallocing a new one
- */
- victim = uc->uc_fifo[uc->uc_nextvictim];
- if (victim != NULL) {
- loc = CACHE_LOC(xprt, victim->cache_xid);
- for (vicp = &uc->uc_entries[loc];
- *vicp != NULL && *vicp != victim;
- vicp = &(*vicp)->cache_next);
- if (*vicp == NULL) {
- CACHE_PERROR("cache_set: victim not found");
- return;
- }
- *vicp = victim->cache_next; /* remote from cache */
- newbuf = victim->cache_reply;
- } else {
- victim = ALLOC(struct cache_node, 1);
-
- if (victim == NULL) {
- CACHE_PERROR("cache_set: victim alloc failed");
- return;
- }
- newbuf = mem_alloc(su->su_iosz);
- if (newbuf == NULL) {
- CACHE_PERROR("cache_set: could not allocate new rpc_buffer");
- return;
- }
+ cache_ptr victim;
+ cache_ptr *vicp;
+ struct svcudp_data *su = su_data (xprt);
+ struct udp_cache *uc = (struct udp_cache *) su->su_cache;
+ u_int loc;
+ char *newbuf;
+
+ /*
+ * Find space for the new entry, either by
+ * reusing an old entry, or by mallocing a new one
+ */
+ victim = uc->uc_fifo[uc->uc_nextvictim];
+ if (victim != NULL)
+ {
+ loc = CACHE_LOC (xprt, victim->cache_xid);
+ for (vicp = &uc->uc_entries[loc];
+ *vicp != NULL && *vicp != victim;
+ vicp = &(*vicp)->cache_next)
+ ;
+ if (*vicp == NULL)
+ {
+ CACHE_PERROR (_("cache_set: victim not found"));
+ return;
}
-
- /*
- * Store it away
- */
- victim->cache_replylen = replylen;
- victim->cache_reply = rpc_buffer(xprt);
- rpc_buffer(xprt) = newbuf;
- xdrmem_create(&(su->su_xdrs), rpc_buffer(xprt), su->su_iosz,
- XDR_ENCODE);
- victim->cache_xid = su->su_xid;
- victim->cache_proc = uc->uc_proc;
- victim->cache_vers = uc->uc_vers;
- victim->cache_prog = uc->uc_prog;
- victim->cache_addr = uc->uc_addr;
- loc = CACHE_LOC(xprt, victim->cache_xid);
- victim->cache_next = uc->uc_entries[loc];
- uc->uc_entries[loc] = victim;
- uc->uc_fifo[uc->uc_nextvictim++] = victim;
- uc->uc_nextvictim %= uc->uc_size;
+ *vicp = victim->cache_next; /* remote from cache */
+ newbuf = victim->cache_reply;
+ }
+ else
+ {
+ victim = ALLOC (struct cache_node, 1);
+ if (victim == NULL)
+ {
+ CACHE_PERROR (_("cache_set: victim alloc failed"));
+ return;
+ }
+ newbuf = mem_alloc (su->su_iosz);
+ if (newbuf == NULL)
+ {
+ CACHE_PERROR (_("cache_set: could not allocate new rpc_buffer"));
+ return;
+ }
+ }
+
+ /*
+ * Store it away
+ */
+ victim->cache_replylen = replylen;
+ victim->cache_reply = rpc_buffer (xprt);
+ rpc_buffer (xprt) = newbuf;
+ xdrmem_create (&(su->su_xdrs), rpc_buffer (xprt), su->su_iosz, XDR_ENCODE);
+ victim->cache_xid = su->su_xid;
+ victim->cache_proc = uc->uc_proc;
+ victim->cache_vers = uc->uc_vers;
+ victim->cache_prog = uc->uc_prog;
+ victim->cache_addr = uc->uc_addr;
+ loc = CACHE_LOC (xprt, victim->cache_xid);
+ victim->cache_next = uc->uc_entries[loc];
+ uc->uc_entries[loc] = victim;
+ uc->uc_fifo[uc->uc_nextvictim++] = victim;
+ uc->uc_nextvictim %= uc->uc_size;
}
/*
* Try to get an entry from the cache
* return 1 if found, 0 if not found
*/
-static int cache_get(xprt, msg, replyp, replylenp)
-SVCXPRT *xprt;
-struct rpc_msg *msg;
-char **replyp;
-u_long *replylenp;
+static int
+cache_get (xprt, msg, replyp, replylenp)
+ SVCXPRT *xprt;
+ struct rpc_msg *msg;
+ char **replyp;
+ u_long *replylenp;
{
- u_int loc;
- register cache_ptr ent;
- register struct svcudp_data *su = su_data(xprt);
- register struct udp_cache *uc = (struct udp_cache *) su->su_cache;
-
-# define EQADDR(a1, a2) (bcmp((char*)&a1, (char*)&a2, sizeof(a1)) == 0)
-
- loc = CACHE_LOC(xprt, su->su_xid);
- for (ent = uc->uc_entries[loc]; ent != NULL; ent = ent->cache_next) {
- if (ent->cache_xid == su->su_xid &&
- ent->cache_proc == uc->uc_proc &&
- ent->cache_vers == uc->uc_vers &&
- ent->cache_prog == uc->uc_prog &&
- EQADDR(ent->cache_addr, uc->uc_addr)) {
- *replyp = ent->cache_reply;
- *replylenp = ent->cache_replylen;
- return (1);
- }
+ u_int loc;
+ cache_ptr ent;
+ struct svcudp_data *su = su_data (xprt);
+ struct udp_cache *uc = (struct udp_cache *) su->su_cache;
+
+#define EQADDR(a1, a2) (memcmp((char*)&a1, (char*)&a2, sizeof(a1)) == 0)
+
+ loc = CACHE_LOC (xprt, su->su_xid);
+ for (ent = uc->uc_entries[loc]; ent != NULL; ent = ent->cache_next)
+ {
+ if (ent->cache_xid == su->su_xid &&
+ ent->cache_proc == uc->uc_proc &&
+ ent->cache_vers == uc->uc_vers &&
+ ent->cache_prog == uc->uc_prog &&
+ EQADDR (ent->cache_addr, uc->uc_addr))
+ {
+ *replyp = ent->cache_reply;
+ *replylenp = ent->cache_replylen;
+ return 1;
}
- /*
- * Failed to find entry
- * Remember a few things so we can do a set later
- */
- uc->uc_proc = msg->rm_call.cb_proc;
- uc->uc_vers = msg->rm_call.cb_vers;
- uc->uc_prog = msg->rm_call.cb_prog;
- uc->uc_addr = xprt->xp_raddr;
- return (0);
+ }
+ /*
+ * Failed to find entry
+ * Remember a few things so we can do a set later
+ */
+ uc->uc_proc = msg->rm_call.cb_proc;
+ uc->uc_vers = msg->rm_call.cb_vers;
+ uc->uc_prog = msg->rm_call.cb_prog;
+ memcpy (&uc->uc_addr, &xprt->xp_raddr, sizeof (uc->uc_addr));
+ return 0;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-27 23:30:40 +0000