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6f3f6c506c
This is the same bug as bug 12165, but for readdir_r. The regression test covers both bug 12165 and bug 32126. Reviewed-by: DJ Delorie <dj@redhat.com>
135 lines
4.0 KiB
C
135 lines
4.0 KiB
C
/* Test that readdir does not skip entries with d_ino == 0 (bug 12165).
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Copyright (C) 2024 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <stdlib.h>
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#include <support/check.h>
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#include <support/fuse.h>
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#include <support/readdir.h>
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#include <support/xdirent.h>
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/* Add the directory entry at OFFSET to the stream D. */
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static uint64_t
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add_directory_entry (struct support_fuse_dirstream *d, uint64_t offset)
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{
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bool added = false;
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++offset;
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switch (offset - 1)
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{
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case 0:
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added = support_fuse_dirstream_add (d, 1, offset, DT_DIR, ".");
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break;
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case 1:
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added = support_fuse_dirstream_add (d, 1, offset, DT_DIR, "..");
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break;
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case 2:
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added = support_fuse_dirstream_add (d, 2, offset, DT_REG, "before");
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break;
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case 3:
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added = support_fuse_dirstream_add (d, 0, offset, DT_REG, "zero");
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break;
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case 4:
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added = support_fuse_dirstream_add (d, 3, offset, DT_REG, "after");
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break;
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}
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if (added)
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return offset;
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else
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return 0;
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}
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/* Set to true if getdents64 should produce only one entry. */
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static bool one_entry_per_getdents64;
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static void
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fuse_thread (struct support_fuse *f, void *closure)
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{
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struct fuse_in_header *inh;
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while ((inh = support_fuse_next (f)) != NULL)
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{
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if (support_fuse_handle_mountpoint (f)
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|| (inh->nodeid == 1 && support_fuse_handle_directory (f)))
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continue;
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switch (inh->opcode)
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{
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case FUSE_READDIR:
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if (inh->nodeid == 1)
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{
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uint64_t offset = support_fuse_cast (READ, inh)->offset;
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struct support_fuse_dirstream *d
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= support_fuse_prepare_readdir (f);
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while (true)
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{
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offset = add_directory_entry (d, offset);
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if (offset == 0 || one_entry_per_getdents64)
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break;
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}
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support_fuse_reply_prepared (f);
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}
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else
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support_fuse_reply_error (f, EIO);
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break;
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default:
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FAIL ("unexpected event %s", support_fuse_opcode (inh->opcode));
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support_fuse_reply_error (f, EIO);
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}
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}
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}
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static int
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do_test (void)
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{
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support_fuse_init ();
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for (enum support_readdir_op op = 0; op <= support_readdir_op_last (); ++op)
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{
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struct support_fuse *f = support_fuse_mount (fuse_thread, NULL);
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DIR *dir = xopendir (support_fuse_mountpoint (f));
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struct support_dirent e = { 0, };
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TEST_VERIFY (support_readdir (dir, op, &e));
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TEST_COMPARE_STRING (e.d_name, ".");
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TEST_COMPARE (e.d_ino, 1);
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TEST_VERIFY (support_readdir (dir, op, &e));
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TEST_COMPARE_STRING (e.d_name, "..");
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TEST_COMPARE (e.d_ino, 1);
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TEST_VERIFY (support_readdir (dir, op, &e));
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TEST_COMPARE_STRING (e.d_name, "before");
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TEST_COMPARE (e.d_ino, 2);
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TEST_VERIFY (support_readdir (dir, op, &e));
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TEST_COMPARE_STRING (e.d_name, "zero");
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TEST_COMPARE (e.d_ino, 0);
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TEST_VERIFY (support_readdir (dir, op, &e));
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TEST_COMPARE_STRING (e.d_name, "after");
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TEST_COMPARE (e.d_ino, 3);
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TEST_VERIFY (!support_readdir (dir, op, &e));
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free (e.d_name);
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xclosedir (dir);
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support_fuse_unmount (f);
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}
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return 0;
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}
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#include <support/test-driver.c>
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