static bool
verifyCap()
{
+ int retried = 0;
struct __user_cap_header_struct header;
- struct __user_cap_data_struct user;
- header.version = _LINUX_CAPABILITY_VERSION;
+ struct __user_cap_data_struct user[2];
+
+ header.version = _LINUX_CAPABILITY_VERSION_2;
header.pid = 0;
if (getuid()!=0) {
// perror( "prctl:" );
// return false;
// }
-
- if (capget(&header, &user)==-1) {
+
+retry:
+ if (capget(&header, user)==-1) {
+ if (!retried &&
+ header.version != _LINUX_CAPABILITY_VERSION_2) {
+ header.version = _LINUX_CAPABILITY_VERSION_1;
+ retried = 1;
+ goto retry;
+ }
perror("capget()");
return false;
}
- user.effective = 0;
- user.permitted = 0;
- user.inheritable = 0;
+ user[0].effective = user[1].effective = 0;
+ user[0].permitted = user[1].permitted = 0;
+ user[0].inheritable = user[1].inheritable = 0;
- if (capset(&header, &user)==-1) {
+ if (capset(&header, user)==-1) {
perror("capset()");
return false;
}