svc_vc.c File Reference

#include <wintirpc.h>
#include <reentrant.h>
#include <sys/types.h>
#include <assert.h>
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <rpc/rpc.h>
#include "rpc_com.h"
#include <getpeereid.h>

Include dependency graph for svc_vc.c:

Go to the source code of this file.

Classes
struct	cf_rendezvous
struct	cf_conn

Functions
static SVCXPRT *	makefd_xprt (SOCKET, u_int, u_int)
static bool_t	rendezvous_request (SVCXPRT *, struct rpc_msg *)
static enum xprt_stat	rendezvous_stat (SVCXPRT *)
static void	svc_vc_destroy (SVCXPRT *)
static void	__svc_vc_dodestroy (SVCXPRT *)
static int	read_vc (void *, void *, int)
static int	write_vc (void *, void *, int)
static enum xprt_stat	svc_vc_stat (SVCXPRT *)
static bool_t	svc_vc_recv (SVCXPRT *, struct rpc_msg *)
static bool_t	svc_vc_getargs (SVCXPRT *, xdrproc_t, void *)
static bool_t	svc_vc_freeargs (SVCXPRT *, xdrproc_t, void *)
static bool_t	svc_vc_reply (SVCXPRT *, struct rpc_msg *)
static void	svc_vc_rendezvous_ops (SVCXPRT *)
static void	svc_vc_ops (SVCXPRT *)
static bool_t	svc_vc_control (SVCXPRT *xprt, const u_int rq, void *in)
static bool_t	svc_vc_rendezvous_control (SVCXPRT *xprt, const u_int rq, void *in)
void	__xprt_set_raddr (SVCXPRT *xprt, const struct sockaddr_storage *ss)
SVCXPRT *	svc_vc_create (int fd, u_int sendsize, u_int recvsize)
SVCXPRT *	svc_fd_create (SOCKET fd, u_int sendsize, u_int recvsize)
static int	write_vc (void *xprtp, char *buf, int len)
int	__rpc_get_local_uid (SVCXPRT *transp, uid_t *uid)
bool_t	__svc_clean_idle (fd_set *fds, int timeout, bool_t cleanblock)

Variables
rwlock_t	svc_fd_lock

Function Documentation

__rpc_get_local_uid()

int __rpc_get_local_uid	(	SVCXPRT *	transp,
		uid_t *	uid
	)

Definition at line 783 of file svc_vc.c.

                                                 {
    SOCKET sock;
    int ret;
    gid_t egid;
    uid_t euid;
    struct sockaddr *sa;
 
    sock = transp->xp_fd;
    sa = (struct sockaddr *)transp->xp_rtaddr.buf;
    if (sa->sa_family == AF_UNIX) {
        ret = getpeereid(sock, &euid, &egid);
        if (ret == 0)
            *uid = euid;
        return (ret);
    } else
        return (-1);
}

__svc_clean_idle()

bool_t __svc_clean_idle	(	fd_set *	fds,
		int	timeout,
		bool_t	cleanblock
	)

Definition at line 820 of file svc_vc.c.

{
    int i, ncleaned;
    SVCXPRT *xprt, *least_active;
    struct timeval tv, tdiff, tmax;
    struct cf_conn *cd;
 
    gettimeofday(&tv, NULL);
    tmax.tv_sec = tmax.tv_usec = 0;
    least_active = NULL;
    rwlock_wrlock(&svc_fd_lock);
    for (i = ncleaned = 0; i <= svc_maxfd; i++) {
        if (FD_ISSET(i, fds)) {
            xprt = __svc_xports[i];
            if (xprt == NULL || xprt->xp_ops == NULL ||
                xprt->xp_ops->xp_recv != svc_vc_recv)
                continue;
            cd = (struct cf_conn *)xprt->xp_p1;
            if (!cleanblock && !cd->nonblock)
                continue;
            if (timeout == 0) {
                timersub(&tv, &cd->last_recv_time, &tdiff);
                if (timercmp(&tdiff, &tmax, >)) {
                    tmax = tdiff;
                    least_active = xprt;
                }
                continue;
            }
            if (tv.tv_sec - cd->last_recv_time.tv_sec > timeout) {
                __xprt_unregister_unlocked(xprt);
                __svc_vc_dodestroy(xprt);
                ncleaned++;
            }
        }
    }
    if (timeout == 0 && least_active != NULL) {
        __xprt_unregister_unlocked(least_active);
        __svc_vc_dodestroy(least_active);
        ncleaned++;
    }
    rwlock_unlock(&svc_fd_lock);
    return ncleaned > 0 ? TRUE : FALSE;
}

Referenced by rendezvous_request(), and svc_run().

__svc_vc_dodestroy()

static void __svc_vc_dodestroy ( SVCXPRT *  xprt )

static

Definition at line 407 of file svc_vc.c.

{
    struct cf_conn *cd;
    struct cf_rendezvous *r;
 
    cd = (struct cf_conn *)xprt->xp_p1;
 
    if (xprt->xp_fd != RPC_ANYFD)
        (void)closesocket(xprt->xp_fd);
    if (xprt->xp_port != 0) {
        /* a rendezvouser socket */
        r = (struct cf_rendezvous *)xprt->xp_p1;
        mem_free(r, sizeof (struct cf_rendezvous));
        xprt->xp_port = 0;
    } else {
        /* an actual connection socket */
        XDR_DESTROY(&(cd->xdrs));
        mem_free(cd, sizeof(struct cf_conn));
    }
    if (xprt->xp_rtaddr.buf)
        mem_free(xprt->xp_rtaddr.buf, xprt->xp_rtaddr.maxlen);
    if (xprt->xp_ltaddr.buf)
        mem_free(xprt->xp_ltaddr.buf, xprt->xp_ltaddr.maxlen);
    if (xprt->xp_tp)
        free(xprt->xp_tp);
    if (xprt->xp_netid)
        free(xprt->xp_netid);
    mem_free(xprt, sizeof(SVCXPRT));
}

Referenced by __svc_clean_idle(), and svc_vc_destroy().

__xprt_set_raddr()

void __xprt_set_raddr	(	SVCXPRT *	xprt,
		const struct sockaddr_storage *	ss
	)

Definition at line 111 of file svc_vc.c.

{
    switch (ss->ss_family) {
    case AF_INET6:
        memcpy(&xprt->xp_raddr, ss, sizeof(struct sockaddr_in6));
        xprt->xp_addrlen = sizeof (struct sockaddr_in6);
        break;
    case AF_INET:
        memcpy(&xprt->xp_raddr, ss, sizeof(struct sockaddr_in));
        xprt->xp_addrlen = sizeof (struct sockaddr_in);
        break;
    default:
        xprt->xp_raddr.sin6_family = AF_UNSPEC;
        xprt->xp_addrlen = sizeof (struct sockaddr);
        break;
    }
}

Referenced by rendezvous_request(), svc_dg_recv(), and svc_fd_create().

makefd_xprt()

static SVCXPRT * makefd_xprt ( SOCKET  fd, u_int  sendsize, u_int  recvsize  )

static

Definition at line 252 of file svc_vc.c.

{
    SVCXPRT *xprt;
    struct cf_conn *cd;
    const char *netid;
    struct __rpc_sockinfo si;
 
    assert(fd != SOCKET_ERROR);
 
        if (fd >= FD_SETSIZE) {
                // XXX warnx("svc_vc: makefd_xprt: fd too high\n");
                xprt = NULL;
                goto done;
        }
 
    xprt = mem_alloc(sizeof(SVCXPRT));
    if (xprt == NULL) {
        // XXX warnx("svc_vc: makefd_xprt: out of memory");
        goto done;
    }
    memset(xprt, 0, sizeof *xprt);
    cd = mem_alloc(sizeof(struct cf_conn));
    if (cd == NULL) {
        // XXX warnx("svc_tcp: makefd_xprt: out of memory");
        mem_free(xprt, sizeof(SVCXPRT));
        xprt = NULL;
        goto done;
    }
    cd->strm_stat = XPRT_IDLE;
    xdrrec_create(&(cd->xdrs), sendsize, recvsize,
        xprt, read_vc, write_vc);
    xprt->xp_p1 = cd;
    xprt->xp_verf.oa_base = cd->verf_body;
    svc_vc_ops(xprt);  /* truely deals with calls */
    xprt->xp_port = 0;  /* this is a connection, not a rendezvouser */
    xprt->xp_fd = fd;
        if (__rpc_fd2sockinfo(fd, &si) && __rpc_sockinfo2netid(&si, &netid))
        xprt->xp_netid = strdup(netid);
 
    xprt_register(xprt);
done:
    return (xprt);
}

Referenced by rendezvous_request(), and svc_fd_create().

read_vc()

static int read_vc ( void *  xprtp, void *  buf, int  len  )

static

Definition at line 480 of file svc_vc.c.

{
    SVCXPRT *xprt;
    SOCKET sock;
    int milliseconds = 35 * 1000;
    struct pollfd pollfd;
    struct cf_conn *cfp;
 
    xprt = (SVCXPRT *)xprtp;
    assert(xprt != NULL);
 
    sock = xprt->xp_fd;
 
    cfp = (struct cf_conn *)xprt->xp_p1;
 
    if (cfp->nonblock) {
#ifdef _WIN32
        len = recv(sock, buf, (size_t)len, 0);
#else
        len = read(sock, buf, (size_t)len);
#endif
        if (len == SOCKET_ERROR) {
            if (WSAGetLastError() == EAGAIN)
                len = 0;
            else
                goto fatal_err;
        }
        if (len != 0)
            gettimeofday(&cfp->last_recv_time, NULL);
        return len;
    }
 
    do {
#ifndef __REACTOS__
        pollfd.fd = sock;
        pollfd.events = POLLIN;
        pollfd.revents = 0;
        switch (poll(&pollfd, 1, milliseconds)) {
#else
        /* ReactOS: use select instead of poll */
        fd_set infd;
        struct timeval timeout;
 
        FD_ZERO(&infd);
        FD_SET(sock, &infd);
 
        timeout.tv_sec = 0;
        timeout.tv_usec = milliseconds * 1000;
 
        switch (select(0, &infd, NULL, NULL, &timeout)) {
#endif
        case -1:
            if (errno == EINTR)
                continue;
            /*FALLTHROUGH*/
        case 0:
            goto fatal_err;
 
        default:
            break;
        }
#ifndef __REACTOS__
    } while ((pollfd.revents & POLLIN) == 0);
#else
    } while (TRUE);
#endif
 
#ifdef _WIN32
    if ((len = recv(sock, buf, (size_t)len, 0)) > 0) {
#else
    if ((len = read(sock, buf, (size_t)len)) > 0) {
#endif
        gettimeofday(&cfp->last_recv_time, NULL);
        return (len);
    }
 
fatal_err:
    ((struct cf_conn *)(xprt->xp_p1))->strm_stat = XPRT_DIED;
    return (-1);
}

Referenced by makefd_xprt().

rendezvous_request()

static bool_t rendezvous_request ( SVCXPRT *  xprt, struct rpc_msg *  msg  )

static

Definition at line 301 of file svc_vc.c.

{
    SOCKET sock;
#ifndef _WIN32
    int flags;
#endif
    struct cf_rendezvous *r;
    struct cf_conn *cd;
    struct sockaddr_storage addr;
    socklen_t len;
    struct __rpc_sockinfo si;
    SVCXPRT *newxprt;
    fd_set cleanfds;
 
    assert(xprt != NULL);
    assert(msg != NULL);
 
    r = (struct cf_rendezvous *)xprt->xp_p1;
again:
    len = sizeof addr;
    if ((sock = accept(xprt->xp_fd, (struct sockaddr *)(void *)&addr,
        &len)) == SOCKET_ERROR) {
        if (errno == EINTR)
            goto again;
#ifndef __REACTOS__ // CVE-2018-14621
        /*
         * Clean out the most idle file descriptor when we're
         * running out.
         */
        if (errno == EMFILE || errno == ENFILE) {
            cleanfds = svc_fdset;
            __svc_clean_idle(&cleanfds, 0, FALSE);
            goto again;
        }
#endif
        return (FALSE);
    }
    /*
     * make a new transporter (re-uses xprt)
     */
 
    newxprt = makefd_xprt(sock, r->sendsize, r->recvsize);
#ifdef __REACTOS__ // CVE-2018-14622
    if (!newxprt)
        return (FALSE);
#endif
 
    if (!__rpc_set_netbuf(&newxprt->xp_rtaddr, &addr, len))
        return (FALSE);
 
    __xprt_set_raddr(newxprt, &addr);
 
    if (__rpc_fd2sockinfo(sock, &si) && si.si_proto == IPPROTO_TCP) {
        len = 1;
        /* XXX fvdl - is this useful? */
        setsockopt(sock, IPPROTO_TCP, TCP_NODELAY, (const char *)&len, sizeof (len));
    }
 
    cd = (struct cf_conn *)newxprt->xp_p1;
 
    cd->recvsize = r->recvsize;
    cd->sendsize = r->sendsize;
    cd->maxrec = r->maxrec;
 
#ifndef _WIN32
    if (cd->maxrec != 0) {
        flags = fcntl(sock, F_GETFL, 0);
        if (flags  == -1)
            return (FALSE);
        if (fcntl(sock, F_SETFL, flags | O_NONBLOCK) == -1)
            return (FALSE);
        if (cd->recvsize > cd->maxrec)
            cd->recvsize = cd->maxrec;
        cd->nonblock = TRUE;
        __xdrrec_setnonblock(&cd->xdrs, cd->maxrec);
    } else
        cd->nonblock = FALSE;
#endif  /* _WIN32 */
 
    gettimeofday(&cd->last_recv_time, NULL);
 
    return (FALSE); /* there is never an rpc msg to be processed */
}

Referenced by svc_vc_rendezvous_ops().

rendezvous_stat()

static enum xprt_stat rendezvous_stat ( SVCXPRT *  xprt )

static

Definition at line 389 of file svc_vc.c.

{
 
    return (XPRT_IDLE);
}

Referenced by svc_vc_rendezvous_ops().

svc_fd_create()

SVCXPRT * svc_fd_create	(	SOCKET	fd,
		u_int	sendsize,
		u_int	recvsize
	)

Definition at line 204 of file svc_vc.c.

{
    struct sockaddr_storage ss;
    socklen_t slen;
    SVCXPRT *ret;
 
    assert(fd != -1);
 
    ret = makefd_xprt(fd, sendsize, recvsize);
    if (ret == NULL)
        return NULL;
 
    slen = sizeof (struct sockaddr_storage);
    if (getsockname(fd, (struct sockaddr *)(void *)&ss, &slen) == SOCKET_ERROR) {
        // XXX warnx("svc_fd_create: could not retrieve local addr");
        goto freedata;
    }
    if (!__rpc_set_netbuf(&ret->xp_ltaddr, &ss, sizeof(ss))) {
        // XXX warnx("svc_fd_create: no mem for local addr");
        goto freedata;
    }
 
    slen = sizeof (struct sockaddr_storage);
    if (getpeername(fd, (struct sockaddr *)(void *)&ss, &slen) == SOCKET_ERROR) {
        // XXX warnx("svc_fd_create: could not retrieve remote addr");
        goto freedata;
    }
    if (!__rpc_set_netbuf(&ret->xp_rtaddr, &ss, sizeof(ss))) {
        // XXX warnx("svc_fd_create: no mem for local addr");
        goto freedata;
    }
 
    /* Set xp_raddr for compatibility */
    __xprt_set_raddr(ret, &ss);
 
    return ret;
 
freedata:
    if (ret->xp_ltaddr.buf != NULL)
        mem_free(ret->xp_ltaddr.buf, rep->xp_ltaddr.maxlen);
 
    return NULL;
}

Referenced by svc_tli_create().

svc_vc_control()

static bool_t svc_vc_control ( SVCXPRT *  xprt, const u_int  rq, void *  in  )

static

Definition at line 440 of file svc_vc.c.

{
    return (FALSE);
}

Referenced by svc_vc_ops().

svc_vc_create()

SVCXPRT * svc_vc_create	(	int	fd,
		u_int	sendsize,
		u_int	recvsize
	)

Definition at line 146 of file svc_vc.c.

{
    SVCXPRT *xprt;
    struct cf_rendezvous *r = NULL;
    struct __rpc_sockinfo si;
    struct sockaddr_storage sslocal;
    socklen_t slen;
 
    r = mem_alloc(sizeof(*r));
    if (r == NULL) {
        // XXX warnx("svc_vc_create: out of memory");
        goto cleanup_svc_vc_create;
    }
    if (!__rpc_fd2sockinfo(fd, &si))
        return NULL;
    r->sendsize = __rpc_get_t_size(si.si_af, si.si_proto, (int)sendsize);
    r->recvsize = __rpc_get_t_size(si.si_af, si.si_proto, (int)recvsize);
    r->maxrec = __svc_maxrec;
    xprt = mem_alloc(sizeof(SVCXPRT));
    if (xprt == NULL) {
        // XXX warnx("svc_vc_create: out of memory");
        goto cleanup_svc_vc_create;
    }
    xprt->xp_tp = NULL;
    xprt->xp_p1 = r;
    xprt->xp_p2 = NULL;
    xprt->xp_p3 = NULL;
    xprt->xp_verf = _null_auth;
    svc_vc_rendezvous_ops(xprt);
    xprt->xp_port = (u_short)-1;    /* It is the rendezvouser */
    xprt->xp_fd = fd;
 
    slen = sizeof (struct sockaddr_storage);
    if (getsockname(fd, (struct sockaddr *)(void *)&sslocal, &slen) == SOCKET_ERROR) {
        // XXX warnx("svc_vc_create: could not retrieve local addr");
        goto cleanup_svc_vc_create;
    }
 
    if (!__rpc_set_netbuf(&xprt->xp_ltaddr, &sslocal, sizeof(sslocal))) {
        // XXX warnx("svc_vc_create: no mem for local addr");
        goto cleanup_svc_vc_create;
    }
    xprt_register(xprt);
    return (xprt);
cleanup_svc_vc_create:
    if (r != NULL)
        mem_free(r, sizeof(*r));
    return (NULL);
}

Referenced by svc_tli_create().

svc_vc_destroy()

static void svc_vc_destroy ( SVCXPRT *  xprt )

static

Definition at line 397 of file svc_vc.c.

{
    assert(xprt != NULL);
    
    xprt_unregister(xprt);
    __svc_vc_dodestroy(xprt);
}

Referenced by svc_vc_ops(), and svc_vc_rendezvous_ops().

svc_vc_freeargs()

static bool_t svc_vc_freeargs ( SVCXPRT *  xprt, xdrproc_t  xdr_args, void *  args_ptr  )

static

Definition at line 689 of file svc_vc.c.

{
    XDR *xdrs;
 
    assert(xprt != NULL);
    /* args_ptr may be NULL */
 
    xdrs = &(((struct cf_conn *)(xprt->xp_p1))->xdrs);
 
    xdrs->x_op = XDR_FREE;
    return ((*xdr_args)(xdrs, args_ptr));
}

Referenced by svc_vc_ops().

svc_vc_getargs()

static bool_t svc_vc_getargs ( SVCXPRT *  xprt, xdrproc_t  xdr_args, void *  args_ptr  )

static

Definition at line 676 of file svc_vc.c.

{
 
    assert(xprt != NULL);
    /* args_ptr may be NULL */
    return ((*xdr_args)(&(((struct cf_conn *)(xprt->xp_p1))->xdrs),
        args_ptr));
}

Referenced by svc_vc_ops().

svc_vc_ops()

static void svc_vc_ops ( SVCXPRT *  xprt )

static

Definition at line 728 of file svc_vc.c.

{
    static struct xp_ops ops;
    static struct xp_ops2 ops2;
    extern mutex_t ops_lock;
 
/* VARIABLES PROTECTED BY ops_lock: ops, ops2 */
 
    mutex_lock(&ops_lock);
    if (ops.xp_recv == NULL) {
        ops.xp_recv = svc_vc_recv;
        ops.xp_stat = svc_vc_stat;
        ops.xp_getargs = svc_vc_getargs;
        ops.xp_reply = svc_vc_reply;
        ops.xp_freeargs = svc_vc_freeargs;
        ops.xp_destroy = svc_vc_destroy;
        ops2.xp_control = svc_vc_control;
    }
    xprt->xp_ops = &ops;
    xprt->xp_ops2 = &ops2;
    mutex_unlock(&ops_lock);
}

Referenced by makefd_xprt().

svc_vc_recv()

static bool_t svc_vc_recv ( SVCXPRT *  xprt, struct rpc_msg *  msg  )

static

Definition at line 647 of file svc_vc.c.

{
    struct cf_conn *cd;
    XDR *xdrs;
 
    assert(xprt != NULL);
    assert(msg != NULL);
 
    cd = (struct cf_conn *)(xprt->xp_p1);
    xdrs = &(cd->xdrs);
 
    if (cd->nonblock) {
        if (!__xdrrec_getrec(xdrs, &cd->strm_stat, TRUE))
            return FALSE;
    }
 
    xdrs->x_op = XDR_DECODE;
    (void)xdrrec_skiprecord(xdrs);
    if (xdr_callmsg(xdrs, msg)) {
        cd->x_id = msg->rm_xid;
        return (TRUE);
    }
    cd->strm_stat = XPRT_DIED;
    return (FALSE);
}

Referenced by __svc_clean_idle(), and svc_vc_ops().

svc_vc_rendezvous_control()

static bool_t svc_vc_rendezvous_control ( SVCXPRT *  xprt, const u_int  rq, void *  in  )

static

Definition at line 449 of file svc_vc.c.

{
    struct cf_rendezvous *cfp;
 
    cfp = (struct cf_rendezvous *)xprt->xp_p1;
    if (cfp == NULL)
        return (FALSE);
    switch (rq) {
        case SVCGET_CONNMAXREC:
            *(int *)in = cfp->maxrec;
            break;
        case SVCSET_CONNMAXREC:
            cfp->maxrec = *(int *)in;
            break;
        default:
            return (FALSE);
    }
    return (TRUE);
}

Referenced by svc_vc_rendezvous_ops().

svc_vc_rendezvous_ops()

static void svc_vc_rendezvous_ops ( SVCXPRT *  xprt )

static

Definition at line 753 of file svc_vc.c.

{
    static struct xp_ops ops;
    static struct xp_ops2 ops2;
    extern mutex_t ops_lock;
 
    mutex_lock(&ops_lock);
    if (ops.xp_recv == NULL) {
        ops.xp_recv = rendezvous_request;
        ops.xp_stat = rendezvous_stat;
        ops.xp_getargs =
            (bool_t (*)(SVCXPRT *, xdrproc_t, void *))abort;
        ops.xp_reply =
            (bool_t (*)(SVCXPRT *, struct rpc_msg *))abort;
        ops.xp_freeargs =
            (bool_t (*)(SVCXPRT *, xdrproc_t, void *))abort,
        ops.xp_destroy = svc_vc_destroy;
        ops2.xp_control = svc_vc_rendezvous_control;
    }
    xprt->xp_ops = &ops;
    xprt->xp_ops2 = &ops2;
    mutex_unlock(&ops_lock);
}

Referenced by svc_vc_create().

svc_vc_reply()

static bool_t svc_vc_reply ( SVCXPRT *  xprt, struct rpc_msg *  msg  )

static

Definition at line 706 of file svc_vc.c.

{
    struct cf_conn *cd;
    XDR *xdrs;
    bool_t rstat;
 
    assert(xprt != NULL);
    assert(msg != NULL);
 
    cd = (struct cf_conn *)(xprt->xp_p1);
    xdrs = &(cd->xdrs);
 
    xdrs->x_op = XDR_ENCODE;
    msg->rm_xid = cd->x_id;
    rstat = xdr_replymsg(xdrs, msg);
    (void)xdrrec_endofrecord(xdrs, TRUE);
    return (rstat);
}

Referenced by svc_vc_ops().

svc_vc_stat()

static enum xprt_stat svc_vc_stat ( SVCXPRT *  xprt )

static

Definition at line 630 of file svc_vc.c.

{
    struct cf_conn *cd;
 
    assert(xprt != NULL);
 
    cd = (struct cf_conn *)(xprt->xp_p1);
 
    if (cd->strm_stat == XPRT_DIED)
        return (XPRT_DIED);
    if (! xdrrec_eof(&(cd->xdrs)))
        return (XPRT_MOREREQS);
    return (XPRT_IDLE);
}

Referenced by svc_vc_ops().

write_vc() [1/2]

static int write_vc ( void *  , void *  , int    )

static

Referenced by makefd_xprt(), and read_vc().

write_vc() [2/2]

static int write_vc ( void *  xprtp, char *  buf, int  len  )

static

Definition at line 572 of file svc_vc.c.

{
    SVCXPRT *xprt;
    int i, cnt;
    struct cf_conn *cd;
    struct timeval tv0, tv1;
#ifdef __REACTOS__
    char *buf = ptr;
#endif
 
    xprt = (SVCXPRT *)xprtp;
    assert(xprt != NULL);
 
    cd = (struct cf_conn *)xprt->xp_p1;
 
    if (cd->nonblock)
        gettimeofday(&tv0, NULL);
    
    for (cnt = len; cnt > 0; cnt -= i, buf += i) {
#ifdef _WIN32
        i = send(xprt->xp_fd, buf, (size_t)cnt, 0);
#else
        i = write(xprt->xp_fd, buf, (size_t)cnt);
#endif
        if (i == SOCKET_ERROR) {
            if (WSAGetLastError() != EAGAIN || !cd->nonblock) {
                cd->strm_stat = XPRT_DIED;
                return (-1);
            }
            if (cd->nonblock && i != cnt) {
                /*
                 * For non-blocking connections, do not
                 * take more than 2 seconds writing the
                 * data out.
                 *
                 * XXX 2 is an arbitrary amount.
                 */
                gettimeofday(&tv1, NULL);
                if (tv1.tv_sec - tv0.tv_sec >= 2) {
                    cd->strm_stat = XPRT_DIED;
                    return (-1);
                }
            }
        }
    }
 
    return (len);
}

Variable Documentation

svc_fd_lock

rwlock_t svc_fd_lock

extern

Definition at line 22 of file mt_misc.c.

Referenced by __svc_clean_idle(), svc_exit(), and svc_run().