[src/trunk]: src/tests/kernel/kqueue Add a test case for PR kern/56460.

[thorpej <thorpej%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/2a5a2051822c
branches:  trunk
changeset: 989928:2a5a2051822c
user:      thorpej <thorpej%NetBSD.org@localhost>
date:      Wed Oct 20 14:33:14 2021 +0000

description:
Add a test case for PR kern/56460.

diffstat:

 tests/kernel/kqueue/t_vnode.c |  49 +++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 49 insertions(+), 0 deletions(-)

diffs (66 lines):

diff -r 5ed14a8c89bf -r 2a5a2051822c tests/kernel/kqueue/t_vnode.c
--- a/tests/kernel/kqueue/t_vnode.c     Wed Oct 20 14:28:21 2021 +0000
+++ b/tests/kernel/kqueue/t_vnode.c     Wed Oct 20 14:33:14 2021 +0000
@@ -671,6 +671,53 @@
        (void)unlink(testfile);
 }
 
+ATF_TC_WITH_CLEANUP(rename_over_self_hardlink);
+ATF_TC_HEAD(rename_over_self_hardlink, tc)
+{
+       atf_tc_set_md_var(tc, "descr", "This test case tests "
+               "renaming a file over a hard-link to itself");
+}
+ATF_TC_BODY(rename_over_self_hardlink, tc)
+{
+       struct kevent event[2], *dir_ev, *file_ev;
+       int dir_fd, file_fd;
+
+       ATF_REQUIRE((kq = kqueue()) != -1);
+
+       ATF_REQUIRE((mkdir(dir_target, 0700)) == 0);
+       ATF_REQUIRE((dir_fd = open(dir_target, O_RDONLY)) != -1);
+
+       ATF_REQUIRE((file_fd = open(file_inside1, O_RDONLY | O_CREAT,
+           0600)) != -1);
+       ATF_REQUIRE(link(file_inside1, file_inside2) == 0);
+
+       EV_SET(&event[0], dir_fd, EVFILT_VNODE, EV_ADD,
+           NOTE_WRITE | NOTE_EXTEND | NOTE_LINK, 0, NULL);
+       EV_SET(&event[1], file_fd, EVFILT_VNODE, EV_ADD,
+           NOTE_LINK | NOTE_DELETE, 0, NULL);
+       ATF_REQUIRE(kevent(kq, event, 2, NULL, 0, NULL) == 0);
+
+       ATF_REQUIRE(rename(file_inside1, file_inside2) == 0);
+
+       ATF_REQUIRE(kevent(kq, NULL, 0, event, 2, &ts) == 2);
+       ATF_REQUIRE(event[0].ident == (uintptr_t)dir_fd ||
+                   event[0].ident == (uintptr_t)file_fd);
+       ATF_REQUIRE(event[1].ident == (uintptr_t)dir_fd ||
+                   event[1].ident == (uintptr_t)file_fd);
+       if (event[0].ident == (uintptr_t)dir_fd) {
+               dir_ev = &event[0];
+               file_ev = &event[1];
+       } else {
+               dir_ev = &event[1];
+               file_ev = &event[0];
+       }
+       ATF_REQUIRE(dir_ev->fflags == NOTE_WRITE);
+       ATF_REQUIRE(file_ev->fflags == NOTE_LINK);
+}
+ATF_TC_CLEANUP(rename_over_self_hardlink, tc)
+{
+       cleanup();
+}
 
 ATF_TP_ADD_TCS(tp)
 {
@@ -699,6 +746,8 @@
        ATF_TP_ADD_TC(tp, dir_note_write_mv_file_out);
        ATF_TP_ADD_TC(tp, dir_note_write_mv_file_within);
 
+       ATF_TP_ADD_TC(tp, rename_over_self_hardlink);
+
        ATF_TP_ADD_TC(tp, open_write_read_close);
        ATF_TP_ADD_TC(tp, interest);