diff options
| -rw-r--r-- | io/Makefile | 2 | ||||
| -rw-r--r-- | io/tst-lstat-nofollow-time64.c | 1 | ||||
| -rw-r--r-- | io/tst-lstat-nofollow.c | 98 |
3 files changed, 101 insertions, 0 deletions
diff --git a/io/Makefile b/io/Makefile index 47666a1..321b159 100644 --- a/io/Makefile +++ b/io/Makefile @@ -208,6 +208,7 @@ tests := \ tst-lchmod \ tst-linkat \ tst-lockf \ + tst-lstat-nofollow \ tst-lutimes \ tst-mkdirat \ tst-mkfifoat \ @@ -237,6 +238,7 @@ tests-time64 := \ tst-futimes-time64\ tst-futimesat-time64 \ tst-lchmod-time64 \ + tst-lstat-nofollow-time64 \ tst-lutimes-time64 \ tst-stat-time64 \ tst-utime-time64 \ diff --git a/io/tst-lstat-nofollow-time64.c b/io/tst-lstat-nofollow-time64.c new file mode 100644 index 0000000..45feb3f --- /dev/null +++ b/io/tst-lstat-nofollow-time64.c @@ -0,0 +1 @@ +#include "tst-lstat-nofollow.c" diff --git a/io/tst-lstat-nofollow.c b/io/tst-lstat-nofollow.c new file mode 100644 index 0000000..5bbb557 --- /dev/null +++ b/io/tst-lstat-nofollow.c @@ -0,0 +1,98 @@ +/* Test that lstat does not follow symbolic links. + Copyright (C) 2024 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <https://www.gnu.org/licenses/>. */ + +#include <string.h> +#include <support/check.h> +#include <support/fuse.h> +#include <support/support.h> +#include <sys/stat.h> +#include <unistd.h> + +static void +fuse_thread (struct support_fuse *f, void *closure) +{ + struct fuse_in_header *inh; + while ((inh = support_fuse_next (f)) != NULL) + { + if (support_fuse_handle_mountpoint (f) + || (inh->nodeid == 1 && support_fuse_handle_directory (f))) + continue; + switch (inh->opcode) + { + case FUSE_LOOKUP: + { + TEST_COMPARE (inh->nodeid, 1); + TEST_COMPARE_STRING (support_fuse_cast (LOOKUP, inh), "symlink"); + struct fuse_entry_out *out = support_fuse_prepare_entry (f, 2); + out->attr.mode = S_IFLNK | 0777; + out->attr.size = strlen ("target"); + support_fuse_reply_prepared (f); + } + break; + case FUSE_GETATTR: + { + TEST_COMPARE (inh->nodeid, 2); + struct fuse_attr_out *out = support_fuse_prepare_attr (f); + out->attr.mode = S_IFLNK | 0777; + out->attr.size = strlen ("target"); + support_fuse_reply_prepared (f); + } + break; + case FUSE_READLINK: + /* The lstat operation must not attempt to look at the + symbolic link target. */ + FAIL ("attempt to obtain target of symblic link for node %llu", + (unsigned long long int) inh->nodeid); + break; + default: + FAIL ("unexpected event %s", support_fuse_opcode (inh->opcode)); + } + } +} + +static int +do_test (void) +{ + support_fuse_init (); + struct support_fuse *f = support_fuse_mount (fuse_thread, NULL); + char *symlink_path = xasprintf ("%s/symlink", support_fuse_mountpoint (f)); + + { + struct stat st = { 0, }; + TEST_COMPARE (lstat (symlink_path, &st), 0); + TEST_COMPARE (st.st_uid, getuid ()); + TEST_COMPARE (st.st_gid, getgid ()); + TEST_COMPARE (st.st_size, 6); + TEST_COMPARE (st.st_mode, S_IFLNK | 0777); + } + + { + struct stat64 st = { 0, }; + TEST_COMPARE (lstat64 (symlink_path, &st), 0); + TEST_COMPARE (st.st_uid, getuid ()); + TEST_COMPARE (st.st_gid, getgid ()); + TEST_COMPARE (st.st_size, 6); + TEST_COMPARE (st.st_mode, S_IFLNK | 0777); + } + + free (symlink_path); + support_fuse_unmount (f); + return 0; +} + +#include <support/test-driver.c> |