nspipe.c

unix环境高级编程的源代码

/* Create a named stream pipe.  Called by server on initialization. */

#include    <sys/types.h>
#include    <sys/socket.h>
#include    <sys/un.h>
#include    <string.h>
#include    <unistd.h>
#include    "ourhdr.h"

int            /* returns 0 if all OK, -1 if error (with errno set) */
ns_pipe(const char *name, int fd[2])
{
    int                    len;
    struct sockaddr_un    unix_addr;

    if (s_pipe(fd) < 0)        /* create unnamed stream pipe */
        return(-1);

    unlink(name);    /* remove the name, if it already exists */

    memset(&unix_addr, 0, sizeof(unix_addr));
    unix_addr.sun_family = AF_UNIX;
    strcpy(unix_addr.sun_path, name);
    len = strlen(unix_addr.sun_path) + sizeof(unix_addr.sun_family);

    return(bind(fd[0], (struct sockaddr *) &unix_addr, len));
                        /* fd[0] has the name bound to it */
}