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      1 /*
      2 * Copyright (c) 2016 Fujitsu Ltd.
      3 * Author: Xiao Yang <yangx.jy (at) 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 * Test Name: llistxattr03
     19 *
     20 * Description:
     21 * llistxattr is identical to listxattr. an empty buffer of size zero
     22 * can return the current size of the list of extended attribute names,
     23 * which can be used to estimate a suitable buffer.
     24 */
     25 
     26 #include "config.h"
     27 #include <errno.h>
     28 #include <sys/types.h>
     29 
     30 #ifdef HAVE_SYS_XATTR_H
     31 #include <sys/xattr.h>
     32 #endif
     33 
     34 #include "tst_test.h"
     35 
     36 #ifdef HAVE_SYS_XATTR_H
     37 
     38 #define SECURITY_KEY	"security.ltptest"
     39 #define VALUE           "test"
     40 #define VALUE_SIZE      (sizeof(VALUE) - 1)
     41 
     42 static const char *filename[] = {"testfile1", "testfile2"};
     43 
     44 static int check_suitable_buf(const char *name, long size)
     45 {
     46 	int n;
     47 	char buf[size];
     48 
     49 	n = llistxattr(name, buf, sizeof(buf));
     50 
     51 	return n != -1;
     52 }
     53 
     54 static void verify_llistxattr(unsigned int n)
     55 {
     56 	const char *name = filename[n];
     57 
     58 	TEST(llistxattr(name, NULL, 0));
     59 	if (TEST_RETURN == -1) {
     60 		tst_res(TFAIL | TTERRNO, "llistxattr() failed");
     61 		return;
     62 	}
     63 
     64 	if (check_suitable_buf(name, TEST_RETURN))
     65 		tst_res(TPASS, "llistxattr() succeed with suitable buffer");
     66 	else
     67 		tst_res(TFAIL, "llistxattr() failed with small buffer");
     68 }
     69 
     70 static void setup(void)
     71 {
     72 	SAFE_TOUCH(filename[0], 0644, NULL);
     73 
     74 	SAFE_TOUCH(filename[1], 0644, NULL);
     75 
     76 	SAFE_LSETXATTR(filename[1], SECURITY_KEY, VALUE, VALUE_SIZE, XATTR_CREATE);
     77 }
     78 
     79 static struct tst_test test = {
     80 	.needs_tmpdir = 1,
     81 	.needs_root = 1,
     82 	.test = verify_llistxattr,
     83 	.tcnt = ARRAY_SIZE(filename),
     84 	.setup = setup,
     85 };
     86 
     87 #else /* HAVE_SYS_XATTR_H */
     88 	TST_TEST_TCONF("<sys/xattr.h> does not exist.");
     89 #endif
     90