aboutsummaryrefslogtreecommitdiff
path: root/src/ipc/ftok.c
blob: e6ef40ee4b90c0b7b3fa625bdd7532ab3ba01c71 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
#include <sys/ipc.h>
#include <sys/stat.h>

key_t ftok(const char *path, int id)
{
	struct stat st;
	if (stat(path, &st) < 0) return -1;

	return ((st.st_ino & 0xffff) | ((st.st_dev & 0xff) << 16) | ((id & 0xffu) << 24));
}


#ifdef TEST
int
main(void) {
	return 0;
}
#endif