29 lines
516 B
C
29 lines
516 B
C
#include "unpipc.h"
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
int c, fd, flags;
|
|
char *ptr;
|
|
off_t length;
|
|
|
|
flags = O_RDWR | O_CREAT;
|
|
while ( (c = Getopt(argc, argv, "e")) != -1)
|
|
{
|
|
switch(c)
|
|
{
|
|
case 'e':
|
|
flags |= O_EXCL;
|
|
break;
|
|
}
|
|
}
|
|
if (optind != argc - 2)
|
|
err_quit("usage: shmcreate [ -e ] <name> <length>");
|
|
length = atoi(argv[optind + 1]);
|
|
|
|
fd = Shm_open(argv[optind], flags, FILE_MODE);
|
|
Ftruncate(fd, length);
|
|
|
|
ptr = Mmap(NULL, length, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
|
|
exit(0);
|
|
}
|