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Diffstat (limited to '')
-rw-r--r-- | gnulib-tests/test-chown.h | 209 |
1 files changed, 209 insertions, 0 deletions
diff --git a/gnulib-tests/test-chown.h b/gnulib-tests/test-chown.h new file mode 100644 index 0000000..c1cf7bb --- /dev/null +++ b/gnulib-tests/test-chown.h @@ -0,0 +1,209 @@ +/* Tests of chown. + Copyright (C) 2009-2022 Free Software Foundation, Inc. + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program 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 General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <https://www.gnu.org/licenses/>. */ + +/* Written by Eric Blake <ebb9@byu.net>, 2009. */ + +#include "nap.h" + +#if !HAVE_GETEGID +# define getegid() ((gid_t) -1) +#endif + +/* This file is designed to test chown(n,o,g) and + chownat(AT_FDCWD,n,o,g,0). FUNC is the function to test. Assumes + that BASE and ASSERT are already defined, and that appropriate + headers are already included. If PRINT, warn before skipping + symlink tests with status 77. */ + +static int +test_chown (int (*func) (char const *, uid_t, gid_t), bool print) +{ + struct stat st1; + struct stat st2; + gid_t *gids = NULL; + int gids_count; + int result; + + /* Solaris 8 is interesting - if the current process belongs to + multiple groups, the current directory is owned by a group that + the current process belongs to but different than getegid(), and + the current directory does not have the S_ISGID bit, then regular + files created in the directory belong to the directory's group, + but symlinks belong to the current effective group id. If + S_ISGID is set, then both files and symlinks belong to the + directory's group. However, it is possible to run the testsuite + from within a directory owned by a group we don't belong to, in + which case all things that we create belong to the current + effective gid. So, work around the issues by creating a + subdirectory (we are guaranteed that the subdirectory will be + owned by one of our current groups), change ownership of that + directory to the current effective gid (which will thus succeed), + then create all other files within that directory (eliminating + questions on whether inheritance or current id triumphs, since + the two methods resolve to the same gid). */ + ASSERT (mkdir (BASE "dir", 0700) == 0); + ASSERT (stat (BASE "dir", &st1) == 0); + + /* Filter out mingw and file systems which have no concept of groups. */ + result = func (BASE "dir", st1.st_uid, getegid ()); + if (result == -1 && (errno == ENOSYS || errno == EPERM)) + { + ASSERT (rmdir (BASE "dir") == 0); + if (print) + fputs ("skipping test: no support for ownership\n", stderr); + return 77; + } + ASSERT (result == 0); + + ASSERT (close (creat (BASE "dir/file", 0600)) == 0); + ASSERT (stat (BASE "dir/file", &st1) == 0); + ASSERT (st1.st_uid != (uid_t) -1); + ASSERT (st1.st_gid != (gid_t) -1); + ASSERT (st1.st_gid == getegid ()); + + /* Sanity check of error cases. */ + errno = 0; + ASSERT (func ("", -1, -1) == -1); + ASSERT (errno == ENOENT); + errno = 0; + ASSERT (func ("no_such", -1, -1) == -1); + ASSERT (errno == ENOENT); + errno = 0; + ASSERT (func ("no_such/", -1, -1) == -1); + ASSERT (errno == ENOENT); + errno = 0; + ASSERT (func (BASE "dir/file/", -1, -1) == -1); + ASSERT (errno == ENOTDIR); + + /* Check that -1 does not alter ownership. */ + ASSERT (func (BASE "dir/file", -1, st1.st_gid) == 0); + ASSERT (func (BASE "dir/file", st1.st_uid, -1) == 0); + ASSERT (func (BASE "dir/file", (uid_t) -1, (gid_t) -1) == 0); + ASSERT (stat (BASE "dir/file", &st2) == 0); + ASSERT (st1.st_uid == st2.st_uid); + ASSERT (st1.st_gid == st2.st_gid); + + /* Even if the values aren't changing, ctime is required to change + if at least one argument is not -1. */ + nap (); + ASSERT (func (BASE "dir/file", st1.st_uid, st1.st_gid) == 0); + ASSERT (stat (BASE "dir/file", &st2) == 0); + ASSERT (st1.st_ctime < st2.st_ctime + || (st1.st_ctime == st2.st_ctime + && get_stat_ctime_ns (&st1) < get_stat_ctime_ns (&st2))); + + /* Test symlink behavior. */ + if (symlink ("link", BASE "dir/link2")) + { + ASSERT (unlink (BASE "dir/file") == 0); + ASSERT (rmdir (BASE "dir") == 0); + if (print) + fputs ("skipping test: symlinks not supported on this file system\n", + stderr); + return 77; + } + errno = 0; + ASSERT (func (BASE "dir/link2", -1, -1) == -1); + ASSERT (errno == ENOENT); + errno = 0; + ASSERT (func (BASE "dir/link2/", st1.st_uid, st1.st_gid) == -1); + ASSERT (errno == ENOENT); + ASSERT (symlink ("file", BASE "dir/link") == 0); + + /* For non-privileged users, chown can only portably succeed at + changing group ownership of a file we own. If we belong to at + least two groups, then verifying the correct change is simple. + But if we belong to only one group, then we fall back on the + other observable effect of chown: the ctime must be updated. */ + gids_count = mgetgroups (NULL, st1.st_gid, &gids); + if (1 < gids_count) + { + ASSERT (gids[1] != st1.st_gid); + ASSERT (gids[1] != (gid_t) -1); + ASSERT (lstat (BASE "dir/link", &st2) == 0); + ASSERT (st1.st_uid == st2.st_uid); + ASSERT (st1.st_gid == st2.st_gid); + ASSERT (lstat (BASE "dir/link2", &st2) == 0); + ASSERT (st1.st_uid == st2.st_uid); + ASSERT (st1.st_gid == st2.st_gid); + + errno = 0; + ASSERT (func (BASE "dir/link2/", -1, gids[1]) == -1); + ASSERT (errno == ENOTDIR); + ASSERT (stat (BASE "dir/file", &st2) == 0); + ASSERT (st1.st_uid == st2.st_uid); + ASSERT (st1.st_gid == st2.st_gid); + ASSERT (lstat (BASE "dir/link", &st2) == 0); + ASSERT (st1.st_uid == st2.st_uid); + ASSERT (st1.st_gid == st2.st_gid); + ASSERT (lstat (BASE "dir/link2", &st2) == 0); + ASSERT (st1.st_uid == st2.st_uid); + ASSERT (st1.st_gid == st2.st_gid); + + ASSERT (func (BASE "dir/link2", -1, gids[1]) == 0); + ASSERT (stat (BASE "dir/file", &st2) == 0); + ASSERT (st1.st_uid == st2.st_uid); + ASSERT (gids[1] == st2.st_gid); + ASSERT (lstat (BASE "dir/link", &st2) == 0); + ASSERT (st1.st_uid == st2.st_uid); + ASSERT (st1.st_gid == st2.st_gid); + ASSERT (lstat (BASE "dir/link2", &st2) == 0); + ASSERT (st1.st_uid == st2.st_uid); + ASSERT (st1.st_gid == st2.st_gid); + } + else + { + struct stat l1; + struct stat l2; + ASSERT (stat (BASE "dir/file", &st1) == 0); + ASSERT (lstat (BASE "dir/link", &l1) == 0); + ASSERT (lstat (BASE "dir/link2", &l2) == 0); + + nap (); + errno = 0; + ASSERT (func (BASE "dir/link2/", -1, st1.st_gid) == -1); + ASSERT (errno == ENOTDIR); + ASSERT (stat (BASE "dir/file", &st2) == 0); + ASSERT (st1.st_ctime == st2.st_ctime); + ASSERT (get_stat_ctime_ns (&st1) == get_stat_ctime_ns (&st2)); + ASSERT (lstat (BASE "dir/link", &st2) == 0); + ASSERT (l1.st_ctime == st2.st_ctime); + ASSERT (get_stat_ctime_ns (&l1) == get_stat_ctime_ns (&st2)); + ASSERT (lstat (BASE "dir/link2", &st2) == 0); + ASSERT (l2.st_ctime == st2.st_ctime); + ASSERT (get_stat_ctime_ns (&l2) == get_stat_ctime_ns (&st2)); + + ASSERT (func (BASE "dir/link2", -1, st1.st_gid) == 0); + ASSERT (stat (BASE "dir/file", &st2) == 0); + ASSERT (st1.st_ctime < st2.st_ctime + || (st1.st_ctime == st2.st_ctime + && get_stat_ctime_ns (&st1) < get_stat_ctime_ns (&st2))); + ASSERT (lstat (BASE "dir/link", &st2) == 0); + ASSERT (l1.st_ctime == st2.st_ctime); + ASSERT (get_stat_ctime_ns (&l1) == get_stat_ctime_ns (&st2)); + ASSERT (lstat (BASE "dir/link2", &st2) == 0); + ASSERT (l2.st_ctime == st2.st_ctime); + ASSERT (get_stat_ctime_ns (&l2) == get_stat_ctime_ns (&st2)); + } + + /* Cleanup. */ + free (gids); + ASSERT (unlink (BASE "dir/file") == 0); + ASSERT (unlink (BASE "dir/link") == 0); + ASSERT (unlink (BASE "dir/link2") == 0); + ASSERT (rmdir (BASE "dir") == 0); + return 0; +} |