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#include <stdio.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/mman.h>
#include <sys/stat.h>
#include <fcntl.h>
#include "mbuff.h"
struct mbuff_request_struct req={0,"mybuf",0,0};
void usage(char * program) {
printf("usage: %s <shm_name> <smm_size>\n<shm_name> is max %d characters long\n",
program,sizeof(req.name)-1);
}
main (int argc,char **argv){
int fd;
if(argc != 3 || sscanf(argv[2],"%d",&(req.size)) != 1 ) {
usage(argv[0]);
exit(1);
}
strncpy(req.name,argv[1],sizeof(req.name));
req.name[sizeof(req.name)-1]='\0';
if(( fd = open(MBUFF_DEV_NAME,O_RDWR) ) < 0 ){
perror("open failed");
exit(2);
}
printf("%s shared memory area is %d bytes long now\n",req.name,
ioctl(fd,IOCTL_MBUFF_ALLOCATE,&req));
return(0);
}
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