78 lines
1.6 KiB
C
78 lines
1.6 KiB
C
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// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (c) 2000 Silicon Graphics, Inc. All Rights Reserved.
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* AUTHOR : Richard Logan
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* CO-PILOT : William Roske
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* Copyright (c) 2014 Cyril Hrubis <chrubis@suse.cz>
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*/
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/*
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* Test if link(2) fails with EMLINK.
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*/
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#include <stdio.h>
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#include <sys/stat.h>
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#include "tst_test.h"
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#define BASENAME "lkfile"
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static char fname[255];
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static int nlinks = 1000;
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static void verify_link(void)
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{
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int cnt;
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char lname[1024];
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struct stat fbuf, lbuf;
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for (cnt = 1; cnt < nlinks; cnt++) {
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sprintf(lname, "%s_%d", fname, cnt);
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TST_EXP_PASS_SILENT(link(fname, lname), "link(%s, %s)", fname, lname);
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}
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SAFE_STAT(fname, &fbuf);
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for (cnt = 1; cnt < nlinks; cnt++) {
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sprintf(lname, "%s_%d", fname, cnt);
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SAFE_STAT(lname, &lbuf);
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if (fbuf.st_nlink <= 1 || lbuf.st_nlink <= 1 ||
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(fbuf.st_nlink != lbuf.st_nlink)) {
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tst_res(TFAIL,
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"link(%s, %s[1-%d]) ret %ld for %d "
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"files, stat values do not match %d %d",
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fname, fname, nlinks,
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TST_RET, nlinks,
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(int)fbuf.st_nlink, (int)lbuf.st_nlink);
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break;
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}
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}
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if (cnt >= nlinks) {
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tst_res(TPASS,
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"link(%s, %s[1-%d]) ret %ld for %d files, "
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"stat linkcounts match %d",
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fname, fname, nlinks, TST_RET,
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nlinks, (int)fbuf.st_nlink);
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}
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for (cnt = 1; cnt < nlinks; cnt++) {
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sprintf(lname, "%s_%d", fname, cnt);
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SAFE_UNLINK(lname);
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}
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}
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static void setup(void)
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{
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sprintf(fname, "%s_%d", BASENAME, getpid());
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SAFE_TOUCH(fname, 0700, NULL);
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}
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static struct tst_test test = {
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.test_all = verify_link,
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.setup = setup,
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.needs_tmpdir = 1,
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};
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