1 #if defined(linux) 2 3 4 #include <stdio.h> /* printf() */ 5 #include <unistd.h> /* syscall() */ 6 #include <sys/syscall.h> /* __NR_capget */ 7 #include <sys/types.h> /* uid_t */ 8 #include <linux/capability.h> /* _LINUX_CAPABILITY_VERSION */ 9 10 11 int main() 12 { 13 struct __user_cap_header_struct h; 14 struct __user_cap_data_struct d; 15 int syscall_result; 16 17 if (getuid() == 0) 18 fprintf(stderr, "Running as root\n"); 19 h.version = _LINUX_CAPABILITY_VERSION; 20 h.pid = 0; 21 syscall_result = syscall(__NR_capget, &h, &d); 22 if (syscall_result >= 0) 23 { 24 fprintf(stderr, 25 "capget result:\n" 26 "effective %#x\n" 27 "permitted %#x\n" 28 "inheritable %#x\n", 29 d.effective, 30 d.permitted, 31 d.inheritable); 32 } 33 else 34 { 35 perror("capget"); 36 } 37 return 0; 38 } 39 40 41 #else 42 43 44 #include <stdio.h> 45 46 int main() 47 { 48 fprintf(stderr, "This program is Linux-specific\n"); 49 return 0; 50 } 51 52 53 #endif 54
