79 lines
1.6 KiB
C
79 lines
1.6 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (c) 2016 RT-RK Institute for Computer Based Systems
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* Author: Dejan Jovicevic <dejan.jovicevic@rt-rk.com>
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*/
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/*
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* Test Name: listxattr03
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*
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* Description:
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* An empty buffer of size zero can return the current size of the list
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* of extended attribute names, which can be used to estimate a suitable buffer.
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*/
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#include "config.h"
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#include <errno.h>
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#include <sys/types.h>
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#ifdef HAVE_SYS_XATTR_H
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# include <sys/xattr.h>
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#endif
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#include "tst_test.h"
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#ifdef HAVE_SYS_XATTR_H
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#define SECURITY_KEY "security.ltptest"
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#define VALUE "test"
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#define VALUE_SIZE (sizeof(VALUE) - 1)
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static const char * const filename[] = {"testfile1", "testfile2"};
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static int check_suitable_buf(const char *name, long size)
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{
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int n;
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char buf[size];
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n = listxattr(name, buf, sizeof(buf));
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return n != -1;
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}
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static void verify_listxattr(unsigned int n)
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{
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const char *name = filename[n];
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TEST(listxattr(name, NULL, 0));
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if (TST_RET == -1) {
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tst_res(TFAIL | TTERRNO, "listxattr() failed");
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return;
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}
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if (check_suitable_buf(name, TST_RET))
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tst_res(TPASS, "listxattr() succeed with suitable buffer");
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else
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tst_res(TFAIL, "listxattr() failed with small buffer");
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}
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static void setup(void)
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{
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SAFE_TOUCH(filename[0], 0644, NULL);
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SAFE_TOUCH(filename[1], 0644, NULL);
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SAFE_SETXATTR(filename[1], SECURITY_KEY, VALUE, VALUE_SIZE, XATTR_CREATE);
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}
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static struct tst_test test = {
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.needs_tmpdir = 1,
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.needs_root = 1,
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.test = verify_listxattr,
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.tcnt = ARRAY_SIZE(filename),
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.setup = setup,
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};
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#else /* HAVE_SYS_XATTR_H */
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TST_TEST_TCONF("<sys/xattr.h> does not exist.");
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#endif
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