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99 lines
3.1 KiB
C
99 lines
3.1 KiB
C
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/* Test that lstat does not follow symbolic links.
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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 <string.h>
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#include <support/check.h>
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#include <support/fuse.h>
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#include <support/support.h>
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#include <sys/stat.h>
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#include <unistd.h>
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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_LOOKUP:
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{
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TEST_COMPARE (inh->nodeid, 1);
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TEST_COMPARE_STRING (support_fuse_cast (LOOKUP, inh), "symlink");
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struct fuse_entry_out *out = support_fuse_prepare_entry (f, 2);
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out->attr.mode = S_IFLNK | 0777;
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out->attr.size = strlen ("target");
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support_fuse_reply_prepared (f);
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}
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break;
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case FUSE_GETATTR:
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{
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TEST_COMPARE (inh->nodeid, 2);
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struct fuse_attr_out *out = support_fuse_prepare_attr (f);
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out->attr.mode = S_IFLNK | 0777;
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out->attr.size = strlen ("target");
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support_fuse_reply_prepared (f);
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}
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break;
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case FUSE_READLINK:
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/* The lstat operation must not attempt to look at the
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symbolic link target. */
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FAIL ("attempt to obtain target of symblic link for node %llu",
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(unsigned long long int) inh->nodeid);
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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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}
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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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struct support_fuse *f = support_fuse_mount (fuse_thread, NULL);
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char *symlink_path = xasprintf ("%s/symlink", support_fuse_mountpoint (f));
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{
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struct stat st = { 0, };
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TEST_COMPARE (lstat (symlink_path, &st), 0);
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TEST_COMPARE (st.st_uid, getuid ());
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TEST_COMPARE (st.st_gid, getgid ());
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TEST_COMPARE (st.st_size, 6);
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TEST_COMPARE (st.st_mode, S_IFLNK | 0777);
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}
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{
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struct stat64 st = { 0, };
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TEST_COMPARE (lstat64 (symlink_path, &st), 0);
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TEST_COMPARE (st.st_uid, getuid ());
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TEST_COMPARE (st.st_gid, getgid ());
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TEST_COMPARE (st.st_size, 6);
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TEST_COMPARE (st.st_mode, S_IFLNK | 0777);
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}
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free (symlink_path);
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support_fuse_unmount (f);
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return 0;
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}
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#include <support/test-driver.c>
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