1 /******************************************************************************/ 2 /* */ 3 /* Copyright (c) International Business Machines Corp., 2008 */ 4 /* */ 5 /* This program is free software; you can redistribute it and/or modify */ 6 /* it under the terms of the GNU General Public License as published by */ 7 /* the Free Software Foundation; either version 2 of the License, or */ 8 /* (at your option) any later version. */ 9 /* */ 10 /* This program is distributed in the hope that it will be useful, */ 11 /* but WITHOUT ANY WARRANTY; without even the implied warranty of */ 12 /* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See */ 13 /* the GNU General Public License for more details. */ 14 /* */ 15 /* You should have received a copy of the GNU General Public License */ 16 /* along with this program; if not, write to the Free Software */ 17 /* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ 18 /* */ 19 /******************************************************************************/ 20 /* 21 * File: print_caps.c 22 * Author: Serge Hallyn 23 * Purpose: print out the POSIX capabilities with which it runs 24 */ 25 26 #include <stdio.h> 27 #include <stdlib.h> 28 #include <string.h> 29 #include <unistd.h> 30 #include <sys/types.h> 31 #include <sys/stat.h> 32 #include <fcntl.h> 33 #include "config.h" 34 35 #if HAVE_SYS_CAPABILITY_H 36 #include <linux/types.h> 37 #include <sys/capability.h> 38 #endif 39 40 #define FIFOFILE "/tmp/caps_fifo" 41 42 int main(int argc, char *argv[]) 43 { 44 #ifdef HAVE_LIBCAP 45 cap_t cap = cap_get_proc(); 46 int fd; 47 int seqno = 0; 48 char buf[2000]; 49 50 if (argc > 1) 51 seqno = atoi(argv[1]); 52 53 if (!cap) { 54 perror("print_caps - cap_get_proc"); 55 exit(1); 56 } 57 58 fd = open(FIFOFILE, O_WRONLY); 59 if (!fd) { 60 perror("print_caps: open fifo"); 61 exit(2); 62 } 63 64 snprintf(buf, 2000, "%d.%s", seqno, cap_to_text(cap, NULL)); 65 write(fd, buf, strlen(buf) + 1); 66 close(fd); 67 68 cap_free(cap); 69 #endif 70 return 0; 71 } 72
