glibc/sunrpc/svc_udp.c
Ulrich Drepper e7fd8a39ab Update.
1997-03-27 02:28  Ulrich Drepper  <drepper@cygnus.com>

	* gmon/gmon.c (monstartup): Mark all messages.
	(write_call_graph): Rewrite to use larger I/O vector for writev
	call to reduce syscall overhead.
	(write_bb_counts): Simplify writev handling.

	* inet/rexec.c: Make string parameters `const'.
	* resolv/netdb.h: Add prototypes for rcmd, rexec, ruserok, and
	rresvport.

	* math/Makefile: Don't define CFLAGS-* macros to prevent inlining
	in libm-test.
	* math/libm-test.c (this_does_nothing): Remove functions.  It's
	notuseful on any platform but ix86.
	(inverse_func_pair_test): Don't use this_does_nothing.  Use
	memory reference.
	(identities1_test): Likewise.
	(identities2_test): Likewise.
	(identities3_test): Likewise.
	(basic_test): Likewise.
	Patch by Andreas Schwab.
	(BUILD_COMPLEX): New macro.  Create complex number from real and
	imaginary parts.  This works around bugs/inefficiencies in current
	gcc.
	(cexp_test): Use BUILD_COMPLEX.  Add more tests.

	* nss/nsswitch.c: Fix typo.

	* posix/glob.h: Add declaration for glob_pattern_p.
	* posix/glob.c: Rename glob_pattern_p to __glob_pattern_p and
	make glob_pattern_p a weak alias.  This function is used in other
	packages (e.g. bash).

	* signal/Makefile (routines): Add sigisempty, sigandset, and
	sigorset.
	* signal/signal.h: Add prototypes for sigisempty, sigandset, and
	sigorset.
	* signal/sigisempty.c: New file.
	* signal/sigandset.c: New file.
	* signal/sigorset.c: New file.
	* sysdeps/generic/sigset.h: Define __sigisemptyset, __sigandset,
	and __sigorset.
	* sysdeps/unix/sysv/linux/sigset.h: Likewise.

	* stdlib/strtod.c: Handle `n-char-sequence' in NaN parsing.  It
	determines the bits in the mantissa part of the NaN.
	* stdlib/strtof.c: Define SET_MANTISSA for float type.
	* wcsmbs/wcstof.c: Define SET_MANTISSA for float type.
	* stdlib/strtold.c: Define SET_MANTISSA for long double type.
	* wcsmbs/wcstold.c: Define SET_MANTISSA for long double type.

	* sysdeps/libm-ieee754/s_cexp.c: Use explicit assignment to
	complex number components.  Some more corrects for special cases.
	* sysdeps/libm-ieee754/s_cexpf.c: Likewise.
	* sysdeps/libm-ieee754/s_cexpl.c: Likewise.

	* sysdeps/sparc/elf/start.S: Remove as per request of Miguel de Icaza.

	* sysdeps/unix/sysv/linux/netinet/icmp.h: Remove since we have
	ip_icmp.h.  Reported by HJ Lu.

1997-03-25 03:50  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* sysdeps/m68k/Makefile (CFLAGS-rtld.c): Add -Wno-unused.

	* sysdeps/m68k/dl-machine.h (elf_machine_rela): Rewritten as for
	i386.
	(elf_machine_lookup_noexec_p, elf_machine_lookup_noplt_p,
	ELF_MACHINE_RELOC_NOPLT): Define.

1997-03-25 03:48  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* grp/grp.h: Include <stddef.h> only once.

1997-03-25 09:38  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* sysdeps/unix/sysv/linux/termbits.h (OXTABS): Don't define.
	* sysdeps/unix/sysv/linux/alpha/termbits.h (OXTABS): Likewise.

	* termios/sys/ttydefaults.h (TTYDEF_OFLAG): Use either OXTABS or
	TAB3, if one of them is defined.

1997-03-26 04:53  Ulrich Drepper  <drepper@cygnus.com>

	* posix/glob.c (next_brace_sub): Decrement depth counter when '}'
	is found.
	Patch by Dennis Henriksen <opus@flamingo.osrl.dk>.

1997-03-25  16:25  Thorsten Kukuk  <kukuk@vt.uni-paderborn.de>

	* sunrpc/Makefile: Comment gccwarn out.
	* sunrpc/auth_none.c: Fix prototypes and parameters for compiling
	with enabled warnings.
	* sunrpc/auth_unix.c: Likewise.
	* sunrpc/authuxprot.c: Likewise.
	* sunrpc/bindrsvprt.c: Likewise.
	* sunrpc/clnt_gen.c: Likewise.
	* sunrpc/clnt_perr.c: Likewise.
	* sunrpc/clnt_raw.c: Likewise.
	* sunrpc/clnt_simp.c: Likewise.
	* sunrpc/clnt_tcp.c: Likewise.
	* sunrpc/clnt_udp.c: Likewise.
	* sunrpc/get_myaddr.c: Likewise.
	* sunrpc/getrpcport.c: Likewise.
	* sunrpc/pm_getmaps.c: Likewise.
	* sunrpc/pm_getport.c: Likewise.
	* sunrpc/pmap_clnt.c: Likewise.
	* sunrpc/pmap_prot.c: Likewise.
	* sunrpc/pmap_prot2.c: Likewise.
	* sunrpc/pmap_rmt.c: Likewise.
	* sunrpc/rpc/auth.h: Likewise.
	* sunrpc/rpc/clnt.h: Likewise.
	* sunrpc/rpc/pmap_clnt.h: Likewise.
	* sunrpc/rpc/svc.h: Likewise.
	* sunrpc/rpc/svc_auth.h: Likewise.
	* sunrpc/rpc/types.h: Likewise.
	* sunrpc/rpc/xdr.h: Likewise.
	* sunrpc/rpc_clntout.c: Likewise.
	* sunrpc/rpc_cmsg.c: Likewise.
	* sunrpc/rpc_dtable.c: Likewise.
	* sunrpc/rpc_prot.c: Likewise.
	* sunrpc/svc.c: Likewise.
	* sunrpc/svc_auth.c: Likewise.
	* sunrpc/svc_authux.c: Likewise.
	* sunrpc/svc_raw.c: Likewise.
	* sunrpc/svc_run.c: Likewise.
	* sunrpc/svc_simple.c: Likewise.
	* sunrpc/svc_tcp.c: Likewise.
	* sunrpc/svc_udp.c: Likewise.
	* sunrpc/xdr.c: Likewise.
	* sunrpc/xdr_array.c: Likewise.
	* sunrpc/xdr_mem.c: Likewise.
	* sunrpc/xdr_rec.c: Likewise.
	* sunrpc/xdr_ref.c: Likewise.
	* sunrpc/xdr_stdio.c: Likewise.

1997-03-25 13:39  Ulrich Drepper  <drepper@cygnus.com>

	* math/libm-test.c (log2_test): Compile this function and call it.
	(exp2_test): Likewise, but check whether function really exists
	before testing.

	* math/Makefile (libm-calls): Add s_log2 and s_exp2.

1997-03-25 04:50  Ulrich Drepper  <drepper@cygnus.com>

	Implement exp2 function.
	* sysdeps/libm-i387/s_exp2.S: New file.
	* sysdeps/libm-i387/s_exp2f.S: New file.
	* sysdeps/libm-i387/s_exp2l.S: New file.

	Implement log2 function.
	* sysdeps/libm-i387/s_log2.S: New file.
	* sysdeps/libm-i387/s_log2f.S: New file.
	* sysdeps/libm-i387/s_log2l.S: New file.
	* sysdeps/libm-ieee754/s_log2.c: New file.
	* sysdeps/libm-ieee754/s_log2f.c: New file.
	* sysdeps/stub/s_log2.c: New file.  Stub version.
1997-03-27 01:59:53 +00:00

505 lines
13 KiB
C

/* @(#)svc_udp.c 2.2 88/07/29 4.0 RPCSRC */
/*
* 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(lint) && defined(SCCSIDS)
static char sccsid[] = "@(#)svc_udp.c 1.24 87/08/11 Copyr 1984 Sun Micro";
#endif
/*
* svc_udp.c,
* Server side for UDP/IP based RPC. (Does some caching in the hopes of
* achieving execute-at-most-once semantics.)
*
* Copyright (C) 1984, Sun Microsystems, Inc.
*/
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <rpc/rpc.h>
#include <sys/socket.h>
#include <errno.h>
#define rpc_buffer(xprt) ((xprt)->xp_p1)
#ifndef MAX
#define MAX(a, b) ((a > b) ? a : b)
#endif
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 */
};
#define su_data(xprt) ((struct svcudp_data *)(xprt->xp_p2))
/*
* Usage:
* 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
* binds it to an arbitrary port. In any (successful) case,
* xprt->xp_sock is the registered socket number and xprt->xp_port is the
* associated port number.
* Once *xprt is initialized, it is registered as a transporter;
* see (svc.h, xprt_register).
* The routines returns NULL if a problem occurred.
*/
SVCXPRT *
svcudp_bufcreate (sock, sendsz, recvsz)
int sock;
u_int sendsz, recvsz;
{
bool_t madesock = FALSE;
SVCXPRT *xprt;
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) fputs (_("svcudp_create: out of memory\n"), stderr);
return NULL;
}
su = (struct svcudp_data *) mem_alloc (sizeof (*su));
if (su == NULL)
{
(void) fputs (_("svcudp_create: out of memory\n"), stderr);
return NULL;
}
su->su_iosz = ((MAX (sendsz, recvsz) + 3) / 4) * 4;
if ((rpc_buffer (xprt) = mem_alloc (su->su_iosz)) == NULL)
{
(void) fputs (_("svcudp_create: out of memory\n"), stderr);
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;
}
SVCXPRT *
svcudp_create (sock)
int sock;
{
return svcudp_bufcreate (sock, UDPMSGSIZE, UDPMSGSIZE);
}
static enum xprt_stat
svcudp_stat (xprt)
SVCXPRT *xprt;
{
return XPRT_IDLE;
}
static bool_t
svcudp_recv (xprt, msg)
SVCXPRT *xprt;
struct rpc_msg *msg;
{
struct svcudp_data *su = su_data (xprt);
XDR *xdrs = &(su->su_xdrs);
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 < 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))
{
(void) sendto (xprt->xp_sock, reply, (int) replylen, 0,
(struct sockaddr *) &xprt->xp_raddr, xprt->xp_addrlen);
return TRUE;
}
}
return TRUE;
}
static bool_t
svcudp_reply (xprt, msg)
SVCXPRT *xprt;
struct rpc_msg *msg;
{
struct svcudp_data *su = su_data (xprt);
XDR *xdrs = &(su->su_xdrs);
int slen;
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);
}
}
}
return stat;
}
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);
}
static bool_t
svcudp_freeargs (xprt, xdr_args, args_ptr)
SVCXPRT *xprt;
xdrproc_t xdr_args;
caddr_t args_ptr;
{
XDR *xdrs = &(su_data (xprt)->su_xdrs);
xdrs->x_op = XDR_FREE;
return (*xdr_args) (xdrs, args_ptr);
}
static void
svcudp_destroy (xprt)
SVCXPRT *xprt;
{
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));
}
/***********this could be a separate file*********************/
/*
* Fifo cache for udp server
* Copies pointers to reply buffers into fifo cache
* Buffers are sent again if retransmissions are detected.
*/
#define SPARSENESS 4 /* 75% sparse */
#define CACHE_PERROR(msg) \
(void) fprintf(stderr,"%s\n", msg)
#define ALLOC(type, size) \
(type *) mem_alloc((unsigned) (sizeof(type) * (size)))
#define BZERO(addr, type, size) \
bzero((char *) addr, sizeof(type) * (int) (size))
/*
* 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;
};
/*
* 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 */
};
/*
* the hashing function
*/
#define CACHE_LOC(transp, xid) \
(xid % (SPARSENESS*((struct udp_cache *) su_data(transp)->su_cache)->uc_size))
/*
* Enable use of the cache.
* Note: there is no disable.
*/
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;
}
/*
* Set an entry in the cache
*/
static void
cache_set (SVCXPRT *xprt, u_long replylen)
{
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;
}
*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;
{
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) (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;
}
}
/*
* 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;
}