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tests/9pfs: add local Tlink test

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This test case uses a Tlink request to create a hard link to a regular
file using the 9pfs 'local' fs driver.

Signed-off-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
Reviewed-by: Greg Kurz <groug@kaod.org>
Message-Id: <f0d869770ad23ee5ce10f7da90fdb742cadcad72.1603285620.git.qemu_oss@crudebyte.com>
Signed-off-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
This commit is contained in:
Christian Schoenebeck 2020-10-21 14:51:09 +02:00
parent 5b28ab8bda
commit 64e3d40322
1 changed files with 71 additions and 0 deletions
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71
tests/qtest/virtio-9p-test.c
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@ -260,6 +260,7 @@ static const char *rmessage_name(uint8_t id)
id == P9_RMKDIR ? "RMKDIR" :
id == P9_RLCREATE ? "RLCREATE" :
id == P9_RSYMLINK ? "RSYMLINK" :
id == P9_RLINK ? "RLINK" :
id == P9_RUNLINKAT ? "RUNLINKAT" :
id == P9_RFLUSH ? "RFLUSH" :
id == P9_RREADDIR ? "READDIR" :
@ -767,6 +768,33 @@ static void v9fs_rsymlink(P9Req *req, v9fs_qid *qid)
v9fs_req_free(req);
}
/* size[4] Tlink tag[2] dfid[4] fid[4] name[s] */
static P9Req *v9fs_tlink(QVirtio9P *v9p, uint32_t dfid, uint32_t fid,
const char *name, 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_TLINK, tag);
v9fs_uint32_write(req, dfid);
v9fs_uint32_write(req, fid);
v9fs_string_write(req, name);
v9fs_req_send(req);
return req;
}
/* size[4] Rlink tag[2] */
static void v9fs_rlink(P9Req *req)
{
v9fs_req_recv(req, P9_RLINK);
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)
@ -1142,6 +1170,21 @@ static void do_symlink(QVirtio9P *v9p, const char *path, const char *clink,
g_free(name);
}
/* create a hard link named @a clink in directory @a path pointing to @a to */
static void do_hardlink(QVirtio9P *v9p, const char *path, const char *clink,
const char *to)
{
uint32_t dfid, fid;
P9Req *req;
dfid = do_walk(v9p, path);
fid = do_walk(v9p, to);
req = v9fs_tlink(v9p, dfid, fid, clink, 0);
v9fs_req_wait_for_reply(req, NULL);
v9fs_rlink(req);
}
static void do_unlinkat(QVirtio9P *v9p, const char *atpath, const char *rpath,
uint32_t flags)
{
@ -1321,6 +1364,33 @@ static void fs_unlinkat_symlink(void *obj, void *data,
g_free(real_file);
}
static void fs_hardlink_file(void *obj, void *data, QGuestAllocator *t_alloc)
{
QVirtio9P *v9p = obj;
alloc = t_alloc;
struct stat st_real, st_link;
char *real_file = virtio_9p_test_path("07/real_file");
char *hardlink_file = virtio_9p_test_path("07/hardlink_file");
do_attach(v9p);
do_mkdir(v9p, "/", "07");
do_lcreate(v9p, "07", "real_file");
g_assert(stat(real_file, &st_real) == 0);
g_assert((st_real.st_mode & S_IFMT) == S_IFREG);
do_hardlink(v9p, "07", "hardlink_file", "07/real_file");
/* check if link exists now ... */
g_assert(stat(hardlink_file, &st_link) == 0);
/* ... and it's a hard link, right? */
g_assert((st_link.st_mode & S_IFMT) == S_IFREG);
g_assert(st_link.st_dev == st_real.st_dev);
g_assert(st_link.st_ino == st_real.st_ino);
g_free(hardlink_file);
g_free(real_file);
}
static void *assign_9p_local_driver(GString *cmd_line, void *arg)
{
virtio_9p_assign_local_driver(cmd_line, "security_model=mapped-xattr");
@ -1367,6 +1437,7 @@ static void register_virtio_9p_test(void)
qos_add_test("local/symlink_file", "virtio-9p", fs_symlink_file, &opts);
qos_add_test("local/unlinkat_symlink", "virtio-9p", fs_unlinkat_symlink,
&opts);
qos_add_test("local/hardlink_file", "virtio-9p", fs_hardlink_file, &opts);
}
libqos_init(register_virtio_9p_test);