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tests/9pfs: add local Tunlinkat directory test 

This test case uses a Tunlinkat 9p request with flag AT_REMOVEDIR
(see 'man 2 unlink') to remove a directory from host's test directory.

Signed-off-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
Reviewed-by: Greg Kurz <groug@kaod.org>
Message-Id: <3c7c65b476ba44bea6afd0b378b5287e1c671a32.1603285620.git.qemu_oss@crudebyte.com>
Signed-off-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
This commit is contained in:
Christian Schoenebeck 2020-10-21 14:17:01 +02:00
parent 2001880522
commit b37d62d6de
1 changed files with 71 additions and 0 deletions
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71
tests/qtest/virtio-9p-test.c
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@ -258,6 +258,7 @@ static const char *rmessage_name(uint8_t id)
id == P9_RLOPEN ? "RLOPEN" :
id == P9_RWRITE ? "RWRITE" :
id == P9_RMKDIR ? "RMKDIR" :
id == P9_RUNLINKAT ? "RUNLINKAT" :
id == P9_RFLUSH ? "RFLUSH" :
id == P9_RREADDIR ? "READDIR" :
"<unknown>";
@ -693,6 +694,33 @@ static void v9fs_rmkdir(P9Req *req, v9fs_qid *qid)
v9fs_req_free(req);
}
/* size[4] Tunlinkat tag[2] dirfd[4] name[s] flags[4] */
static P9Req *v9fs_tunlinkat(QVirtio9P *v9p, uint32_t dirfd, const char *name,
uint32_t flags, uint16_t tag)
{
P9Req *req;
uint32_t body_size = 4 + 4;
uint16_t string_size = v9fs_string_size(name);
g_assert_cmpint(body_size, <=, UINT32_MAX - string_size);
body_size += string_size;
req = v9fs_req_init(v9p, body_size, P9_TUNLINKAT, tag);
v9fs_uint32_write(req, dirfd);
v9fs_string_write(req, name);
v9fs_uint32_write(req, flags);
v9fs_req_send(req);
return req;
}
/* size[4] Runlinkat tag[2] */
static void v9fs_runlinkat(P9Req *req)
{
v9fs_req_recv(req, P9_RUNLINKAT);
v9fs_req_free(req);
}
/* basic readdir test where reply fits into a single response message */
static void fs_readdir(void *obj, void *data, QGuestAllocator *t_alloc)
{
@ -1004,6 +1032,22 @@ static void do_mkdir(QVirtio9P *v9p, const char *path, const char *cname)
g_free(name);
}
static void do_unlinkat(QVirtio9P *v9p, const char *atpath, const char *rpath,
uint32_t flags)
{
char *const name = g_strdup(rpath);
uint32_t fid;
P9Req *req;
fid = do_walk(v9p, atpath);
req = v9fs_tunlinkat(v9p, fid, name, flags, 0);
v9fs_req_wait_for_reply(req, NULL);
v9fs_runlinkat(req);
g_free(name);
}
static void fs_readdir_split_128(void *obj, void *data,
QGuestAllocator *t_alloc)
{
@ -1050,6 +1094,32 @@ static void fs_create_dir(void *obj, void *data, QGuestAllocator *t_alloc)
g_free(root_path);
}
static void fs_unlinkat_dir(void *obj, void *data, QGuestAllocator *t_alloc)
{
QVirtio9P *v9p = obj;
alloc = t_alloc;
struct stat st;
char *root_path = virtio_9p_test_path("");
char *new_dir = virtio_9p_test_path("02");
g_assert(root_path != NULL);
do_attach(v9p);
do_mkdir(v9p, "/", "02");
/* check if created directory really exists now ... */
g_assert(stat(new_dir, &st) == 0);
/* ... and is actually a directory */
g_assert((st.st_mode & S_IFMT) == S_IFDIR);
do_unlinkat(v9p, "/", "02", AT_REMOVEDIR);
/* directory should be gone now */
g_assert(stat(new_dir, &st) != 0);
g_free(new_dir);
g_free(root_path);
}
static void *assign_9p_local_driver(GString *cmd_line, void *arg)
{
virtio_9p_assign_local_driver(cmd_line, "security_model=mapped-xattr");
@ -1090,6 +1160,7 @@ static void register_virtio_9p_test(void)
opts.before = assign_9p_local_driver;
qos_add_test("local/config", "virtio-9p", pci_config, &opts);
qos_add_test("local/create_dir", "virtio-9p", fs_create_dir, &opts);
qos_add_test("local/unlinkat_dir", "virtio-9p", fs_unlinkat_dir, &opts);
}
libqos_init(register_virtio_9p_test);