1/* 2* Copyright (c) 2016 Fujitsu Ltd. 3* Author: Jinbao Huang <huangjb.jy@cn.fujitsu.com> 4* 5* This program is free software; you can redistribute it and/or modify it 6* under the terms of version 2 of the GNU General Public License as 7* published by the Free Software Foundation. 8* 9* This program is distributed in the hope that it would be useful, but 10* WITHOUT ANY WARRANTY; without even the implied warranty of 11* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 12* 13* You should have received a copy of the GNU General Public License 14* alone with this program. 15* 16*/ 17 18/* 19* Test Name: lgetxattr02 20* 21* Description: 22* 1) lgetxattr(2) fails if the named attribute does not exist. 23* 2) lgetxattr(2) fails if the size of the value buffer is too small 24* to hold the result. 25* 3) lgetxattr(2) fails when attemptes to read from a invalid address. 26* 27* Expected Result: 28* 1) lgetxattr(2) should return -1 and set errno to ENODATA. 29* 2) lgetxattr(2) should return -1 and set errno to ERANGE. 30* 3) lgetxattr(2) should return -1 and set errno to EFAULT. 31*/ 32 33#include "config.h" 34#include <errno.h> 35#include <sys/types.h> 36#include <string.h> 37 38#ifdef HAVE_SYS_XATTR_H 39# include <sys/xattr.h> 40#endif 41 42#include "tst_test.h" 43 44#ifdef HAVE_SYS_XATTR_H 45 46#define SECURITY_KEY "security.ltptest" 47#define VALUE "this is a test value" 48 49static struct test_case { 50 const char *path; 51 size_t size; 52 int exp_err; 53} tcase[] = { 54 {"testfile", sizeof(VALUE), ENODATA}, 55 {"symlink", 1, ERANGE}, 56 {(char *)-1, sizeof(VALUE), EFAULT} 57}; 58 59static void verify_lgetxattr(unsigned int n) 60{ 61 struct test_case *tc = tcase + n; 62 char buf[tc->size]; 63 64 TEST(lgetxattr(tc->path, SECURITY_KEY, buf, sizeof(buf))); 65 if (TEST_RETURN != -1) { 66 tst_res(TFAIL, "lgetxattr() succeeded unexpectedly"); 67 return; 68 } 69 70 if (TEST_ERRNO != tc->exp_err) { 71 tst_res(TFAIL | TTERRNO, "lgetxattr() failed unexpectedlly, " 72 "expected %s", tst_strerrno(tc->exp_err)); 73 } else { 74 tst_res(TPASS | TTERRNO, "lgetxattr() failed as expected"); 75 } 76} 77 78static void setup(void) 79{ 80 int res; 81 82 SAFE_TOUCH("testfile", 0644, NULL); 83 SAFE_SYMLINK("testfile", "symlink"); 84 85 res = lsetxattr("symlink", SECURITY_KEY, VALUE, strlen(VALUE), XATTR_CREATE); 86 if (res == -1) { 87 if (errno == ENOTSUP) { 88 tst_brk(TCONF, "no xattr support in fs or " 89 "mounted without user_xattr option"); 90 } else { 91 tst_brk(TBROK | TERRNO, "lsetxattr(%s) failed", 92 SECURITY_KEY); 93 } 94 } 95} 96 97static struct tst_test test = { 98 .needs_tmpdir = 1, 99 .needs_root = 1, 100 .test = verify_lgetxattr, 101 .tcnt = ARRAY_SIZE(tcase), 102 .setup = setup 103}; 104 105#else /* HAVE_SYS_XATTR_H */ 106 TST_TEST_TCONF("<sys/xattr.h> does not exist."); 107#endif 108