1 #include "key_control.h"
2
3 #include <stdarg.h>
4 #include <unistd.h>
5 #include <sys/syscall.h>
6
7 /* keyring keyctl commands */
8 #define KEYCTL_REVOKE 3 /* revoke a key */
9 #define KEYCTL_SETPERM 5 /* set permissions for a key in a keyring */
10 #define KEYCTL_SEARCH 10 /* search for a key in a keyring */
11
keyctl(int cmd,...)12 static long keyctl(int cmd, ...)
13 {
14 va_list va;
15 unsigned long arg2, arg3, arg4, arg5;
16
17 va_start(va, cmd);
18 arg2 = va_arg(va, unsigned long);
19 arg3 = va_arg(va, unsigned long);
20 arg4 = va_arg(va, unsigned long);
21 arg5 = va_arg(va, unsigned long);
22 va_end(va);
23 return syscall(__NR_keyctl, cmd, arg2, arg3, arg4, arg5);
24 }
25
add_key(const char * type,const char * description,const void * payload,size_t plen,key_serial_t ringid)26 key_serial_t add_key(const char *type,
27 const char *description,
28 const void *payload,
29 size_t plen,
30 key_serial_t ringid)
31 {
32 return syscall(__NR_add_key, type, description, payload, plen, ringid);
33 }
34
keyctl_revoke(key_serial_t id)35 long keyctl_revoke(key_serial_t id)
36 {
37 return keyctl(KEYCTL_REVOKE, id);
38 }
39
keyctl_setperm(key_serial_t id,int permissions)40 long keyctl_setperm(key_serial_t id, int permissions)
41 {
42 return keyctl(KEYCTL_SETPERM, id, permissions);
43 }
44
keyctl_search(key_serial_t ringid,const char * type,const char * description,key_serial_t destringid)45 long keyctl_search(key_serial_t ringid, const char *type,
46 const char *description, key_serial_t destringid)
47 {
48 return keyctl(KEYCTL_SEARCH, ringid, type, description, destringid);
49 }
50