<br />
<b>Deprecated</b>:  The each() function is deprecated. This message will be suppressed on further calls in <b>/home/zhenxiangba/zhenxiangba.com/public_html/phproxy-improved-master/index.php</b> on line <b>456</b><br />

#include <sys/types.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <sys/un.h>
#include <sys/mman.h>
#include <fcntl.h>

#include <string.h>
#include <stdlib.h>
#include <stdio.h>

union fdmsg {
    struct cmsghdr h;
    char buf[CMSG_SPACE(sizeof(int))];
};

int main(int argc, char** argv) {

    int lsock = socket(PF_UNIX, SOCK_STREAM, 0);
    
    if(lsock == -1) {
	printf("socket\n");
	exit(1);
    }
    
    struct sockaddr_un addr;
    
    memset(&addr, 0, sizeof(struct sockaddr_un));
    
    addr.sun_family = AF_UNIX;
    strcpy(addr.sun_path, "/home/chris/mysock");
    
    int ret = bind(lsock, (struct sockaddr*)&addr, sizeof(addr.sun_family) + strlen(addr.sun_path));
    
    if(ret == -1) {
	printf("bind\n");
	exit(1);
    }
    
    ret = listen(lsock, 5);
    
    if(ret == -1) {
	printf("listen\n");
	exit(1);
    }
    
    struct sockaddr_un other;
    socklen_t len = sizeof(struct sockaddr_un);
    
    int csock = accept(lsock, (struct sockaddr*)&other, &len);
    
    if(csock == -1) {
	printf("accept\n");
	exit(1);
    }
    
    int tosend = shm_open("/chris", O_CREAT | O_RDWR, S_IRWXU);
    
    if(tosend == -1) {
	printf("file\n");
	exit(1);
    }
    
    ftruncate(tosend, 10);
    
    char* shm = (char*)mmap(0, 10, PROT_READ | PROT_WRITE, MAP_SHARED, tosend, 0);
    
    if(shm == (char*)-1) {
	printf("mmap\n");
	exit(1);
    }
    
    printf("Got shared memory at %p\n", shm);
    
    strcpy(shm, "SHM!");
    shm[4] = '\0';
    
    struct iovec iov;
    struct msghdr msg;
    
    char data = 'm';
    
    union fdmsg cmsg;
    struct cmsghdr* h;
    
    msg.msg_control = cmsg.buf;
    msg.msg_controllen = sizeof(union fdmsg);
    
    msg.msg_name = 0;
    msg.msg_namelen = 0;
    msg.msg_iov = &iov;
    msg.msg_iovlen = 1;
    msg.msg_flags = 0;
    
    iov.iov_base = &data;
    iov.iov_len = 1;
    
    h = CMSG_FIRSTHDR(&msg);
    h->cmsg_len = CMSG_LEN(sizeof(int));
    h->cmsg_level = SOL_SOCKET;
    h->cmsg_type = SCM_RIGHTS;
    *((int*)CMSG_DATA(h)) = tosend;
    
    ret = sendmsg(csock, &msg, 0);
    
    if(ret == -1) {
	printf("sendmsg\n");
	exit(1);
    }
    
    shm_unlink("/chris");
    
    while(1) {
        printf("SHM: %s; press a key to increment first byte of shm\n", shm);
	getchar();
	shm[0]++;
	msync(shm, 10, 0);
    }
    
    return 0;

}