1 /* 2 * Check decoding of prctl PR_GET_NAME/PR_SET_NAME operations. 3 * 4 * Copyright (c) 2016 Eugene Syromyatnikov <evgsyr (at) gmail.com> 5 * Copyright (c) 2016 Dmitry V. Levin <ldv (at) altlinux.org> 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. The name of the author may not be used to endorse or promote products 17 * derived from this software without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #include "tests.h" 32 33 #ifdef HAVE_PRCTL 34 # include <sys/prctl.h> 35 #endif 36 37 #if defined HAVE_PRCTL && defined PR_GET_NAME && defined PR_SET_NAME 38 39 # include <stdio.h> 40 # include <string.h> 41 # include <unistd.h> 42 43 int 44 main(void) 45 { 46 static const char str[] = "0123456789abcdef"; 47 static const int len = sizeof(str) - 1; 48 char *name = tail_memdup(str, sizeof(str)); 49 int i; 50 int rc; 51 52 rc = prctl(PR_SET_NAME, NULL); 53 printf("prctl(PR_SET_NAME, NULL) = %s\n", sprintrc(rc)); 54 55 for (i = 0; i <= len; ++i) { 56 rc = prctl(PR_SET_NAME, name + len - i); 57 printf("prctl(PR_SET_NAME, \"%.*s\"%s) = %s\n", 58 i < len - 1 ? i : len - 1, 59 str + len - i, 60 i < len - 1 ? "" : "...", 61 sprintrc(rc)); 62 } 63 64 *name = -1; 65 ++name; 66 memcpy(name, str, len); 67 68 for (i = 0; i <= len; ++i) { 69 rc = prctl(PR_SET_NAME, name + len - i); 70 if (i < len - 1) 71 printf("prctl(PR_SET_NAME, %p) = %s\n", 72 name + len - i, sprintrc(rc)); 73 else 74 printf("prctl(PR_SET_NAME, \"%.*s\"...) = %s\n", 75 len - 1, str + len - i, sprintrc(rc)); 76 } 77 78 rc = prctl(PR_GET_NAME, NULL); 79 printf("prctl(PR_GET_NAME, NULL) = %s\n", sprintrc(rc)); 80 81 for (i = 0; i < len; ++i) { 82 rc = prctl(PR_GET_NAME, name + len - i); 83 printf("prctl(PR_GET_NAME, %p) = %s\n", 84 name + len - i, sprintrc(rc)); 85 } 86 87 rc = prctl(PR_GET_NAME, name); 88 if (rc) 89 printf("prctl(PR_GET_NAME, %p) = %s\n", 90 name, sprintrc(rc)); 91 else 92 printf("prctl(PR_GET_NAME, \"%.*s\") = %s\n", 93 len - 1, name, sprintrc(rc)); 94 95 puts("+++ exited with 0 +++"); 96 return 0; 97 } 98 99 #else 100 101 SKIP_MAIN_UNDEFINED("HAVE_PRCTL && PR_GET_NAME && PR_SET_NAME") 102 103 #endif 104
