| /* |
| * Copyright (c) 2016 RT-RK Institute for Computer Based Systems |
| * Author: Dejan Jovicevic <dejan.jovicevic@rt-rk.com> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See |
| * the GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program. |
| */ |
| |
| /* |
| * Test Name: listxattr03 |
| * |
| * Description: |
| * An empty buffer of size zero can return the current size of the list |
| * of extended attribute names, which can be used to estimate a suitable buffer. |
| */ |
| |
| #include "config.h" |
| #include <errno.h> |
| #include <sys/types.h> |
| |
| #ifdef HAVE_SYS_XATTR_H |
| # include <sys/xattr.h> |
| #endif |
| |
| #include "tst_test.h" |
| |
| #ifdef HAVE_SYS_XATTR_H |
| |
| #define SECURITY_KEY "security.ltptest" |
| #define VALUE "test" |
| #define VALUE_SIZE (sizeof(VALUE) - 1) |
| |
| static const char * const filename[] = {"testfile1", "testfile2"}; |
| |
| static int check_suitable_buf(const char *name, long size) |
| { |
| int n; |
| char buf[size]; |
| |
| n = listxattr(name, buf, sizeof(buf)); |
| |
| return n != -1; |
| } |
| |
| static void verify_listxattr(unsigned int n) |
| { |
| const char *name = filename[n]; |
| |
| TEST(listxattr(name, NULL, 0)); |
| if (TEST_RETURN == -1) { |
| tst_res(TFAIL | TTERRNO, "listxattr() failed"); |
| return; |
| } |
| |
| if (check_suitable_buf(name, TEST_RETURN)) |
| tst_res(TPASS, "listxattr() succeed with suitable buffer"); |
| else |
| tst_res(TFAIL, "listxattr() failed with small buffer"); |
| } |
| |
| static void setup(void) |
| { |
| SAFE_TOUCH(filename[0], 0644, NULL); |
| |
| SAFE_TOUCH(filename[1], 0644, NULL); |
| |
| SAFE_SETXATTR(filename[1], SECURITY_KEY, VALUE, VALUE_SIZE, XATTR_CREATE); |
| } |
| |
| static struct tst_test test = { |
| .needs_tmpdir = 1, |
| .needs_root = 1, |
| .test = verify_listxattr, |
| .tcnt = ARRAY_SIZE(filename), |
| .setup = setup, |
| }; |
| |
| #else /* HAVE_SYS_XATTR_H */ |
| TST_TEST_TCONF("<sys/xattr.h> does not exist."); |
| #endif |