143 lines
4.5 KiB
C
143 lines
4.5 KiB
C
/*
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* Copyright (c) 2015-2016 Dmitry V. Levin <ldv@altlinux.org>
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* Copyright (c) 2015-2017 The strace developers.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "tests.h"
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#include <asm/unistd.h>
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#ifdef __NR_getdents
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# include <assert.h>
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# include <dirent.h>
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# include <fcntl.h>
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# include <stddef.h>
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# include <stdio.h>
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# include <sys/stat.h>
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# include <unistd.h>
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static const char fname[] =
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"A\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\n"
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"A\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\n"
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"A\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\n"
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"A\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\n"
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"A\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\n"
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"A\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\n"
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"A\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\n"
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"A\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nZ";
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static const char qname[] =
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"A\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\n"
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"A\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\n"
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"A\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\n"
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"A\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\n"
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"A\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\n"
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"A\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\n"
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"A\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\n"
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"A\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nZ";
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static char buf[8192];
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static const char *
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str_d_type(const unsigned char d_type)
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{
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switch (d_type) {
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case DT_DIR:
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return "DT_DIR";
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case DT_REG:
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return "DT_REG";
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default:
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return "DT_UNKNOWN";
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}
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}
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static void
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print_dirent(const kernel_dirent *d)
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{
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const unsigned int d_name_offset = offsetof(kernel_dirent, d_name);
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int d_name_len = d->d_reclen - d_name_offset - 1;
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assert(d_name_len > 0);
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printf("{d_ino=%llu, d_off=%llu, d_reclen=%u, d_name=",
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(unsigned long long) d->d_ino,
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(unsigned long long) d->d_off, d->d_reclen);
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if (d->d_name[0] == '.')
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printf("\"%.*s\"", d_name_len, d->d_name);
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else
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printf("\"%s\"", qname);
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printf(", d_type=%s}",
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str_d_type(*((const char *) d + d->d_reclen - 1)));
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}
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int
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main(void)
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{
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static const char dname[] = "getdents.test.tmp.dir";
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assert(!mkdir(dname, 0700));
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assert(!chdir(dname));
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(void) close(0);
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assert(!creat(fname, 0600));
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assert(!close(0));
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assert(!open(".", O_RDONLY | O_DIRECTORY));
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unsigned long count = (unsigned long) 0xfacefeeddeadbeefULL;
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long rc = syscall(__NR_getdents, (long) 0xdefacedffffffffULL, NULL,
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count);
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printf("getdents(-1, NULL, %u) = %ld %s (%m)\n",
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(unsigned) count, rc, errno2name());
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count = (unsigned long) 0xfacefeed00000000ULL | sizeof(buf);
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while ((rc = syscall(__NR_getdents, 0, buf, count))) {
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kernel_dirent *d;
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long i;
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if (rc < 0)
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perror_msg_and_skip("getdents");
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printf("getdents(0, [");
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for (i = 0; i < rc; i += d->d_reclen) {
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d = (kernel_dirent *) &buf[i];
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if (i)
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printf(", ");
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print_dirent(d);
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}
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printf("], %u) = %ld\n", (unsigned) count, rc);
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}
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printf("getdents(0, [], %u) = 0\n", (unsigned) count);
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puts("+++ exited with 0 +++");
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assert(!unlink(fname));
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assert(!chdir(".."));
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assert(!rmdir(dname));
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return 0;
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}
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#else
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SKIP_MAIN_UNDEFINED("__NR_getdents")
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#endif
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