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[Qemu-devel] [PATCH v3 05/12] tests: Clean up string interpolation into
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From: |
Eric Blake |
|
Subject: |
[Qemu-devel] [PATCH v3 05/12] tests: Clean up string interpolation into QMP input (simple cases) |
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Date: |
Tue, 25 Jul 2017 16:15:16 -0500 |
From: Markus Armbruster <address@hidden>
When you build QMP input manually like this
cmd = g_strdup_printf("{ 'execute': 'migrate',"
"'arguments': { 'uri': '%s' } }",
uri);
rsp = qmp(cmd);
g_free(cmd);
you're responsible for escaping the interpolated values for JSON. Not
done here, and therefore works only for sufficiently nice @uri. For
instance, if @uri contained a single "'", qobject_from_jsonv() would
fail, qmp_fd_sendv() would misinterpret the failure as empty input and
do nothing, and the test would hang waiting for a response that never
comes.
Leaving interpolation into JSON to qmp() is more robust:
rsp = qmp("{ 'execute': 'migrate', 'arguments': { 'uri': %s } }", uri);
It's also more concise.
Clean up the simple cases where we interpolate exactly a JSON value.
Bonus: gets rid of non-literal format strings. A step towards
compile-time format string checking without triggering
-Wformat-nonliteral.
Signed-off-by: Markus Armbruster <address@hidden>
Message-Id: <address@hidden>
Signed-off-by: Eric Blake <address@hidden>
---
tests/libqos/libqos.c | 16 +----
tests/libqos/pci-pc.c | 9 +--
tests/postcopy-test.c | 8 +--
tests/test-qga.c | 160 +++++++++++++++++++++---------------------------
tests/vhost-user-test.c | 6 +-
5 files changed, 77 insertions(+), 122 deletions(-)
diff --git a/tests/libqos/libqos.c b/tests/libqos/libqos.c
index 6226546c28..42c5315423 100644
--- a/tests/libqos/libqos.c
+++ b/tests/libqos/libqos.c
@@ -86,20 +86,12 @@ void set_context(QOSState *s)
static QDict *qmp_execute(const char *command)
{
- char *fmt;
- QDict *rsp;
-
- fmt = g_strdup_printf("{ 'execute': '%s' }", command);
- rsp = qmp(fmt);
- g_free(fmt);
-
- return rsp;
+ return qmp("{ 'execute': %s }", command);
}
void migrate(QOSState *from, QOSState *to, const char *uri)
{
const char *st;
- char *s;
QDict *rsp, *sub;
bool running;
@@ -114,11 +106,7 @@ void migrate(QOSState *from, QOSState *to, const char *uri)
QDECREF(rsp);
/* Issue the migrate command. */
- s = g_strdup_printf("{ 'execute': 'migrate',"
- "'arguments': { 'uri': '%s' } }",
- uri);
- rsp = qmp(s);
- g_free(s);
+ rsp = qmp("{ 'execute': 'migrate', 'arguments': { 'uri': %s } }", uri);
g_assert(qdict_haskey(rsp, "return"));
QDECREF(rsp);
diff --git a/tests/libqos/pci-pc.c b/tests/libqos/pci-pc.c
index ded1c54c06..d40aa9dffd 100644
--- a/tests/libqos/pci-pc.c
+++ b/tests/libqos/pci-pc.c
@@ -159,14 +159,9 @@ void qpci_free_pc(QPCIBus *bus)
void qpci_unplug_acpi_device_test(const char *id, uint8_t slot)
{
QDict *response;
- char *cmd;
- cmd = g_strdup_printf("{'execute': 'device_del',"
- " 'arguments': {"
- " 'id': '%s'"
- "}}", id);
- response = qmp(cmd);
- g_free(cmd);
+ response = qmp("{'execute': 'device_del', 'arguments': {'id': %s}}",
+ id);
g_assert(response);
g_assert(!qdict_haskey(response, "error"));
QDECREF(response);
diff --git a/tests/postcopy-test.c b/tests/postcopy-test.c
index 8142f2ab90..e2ead875a8 100644
--- a/tests/postcopy-test.c
+++ b/tests/postcopy-test.c
@@ -358,7 +358,7 @@ static void test_migrate(void)
char *uri = g_strdup_printf("unix:%s/migsocket", tmpfs);
QTestState *global = global_qtest, *from, *to;
unsigned char dest_byte_a, dest_byte_b, dest_byte_c, dest_byte_d;
- gchar *cmd, *cmd_src, *cmd_dst;
+ gchar *cmd_src, *cmd_dst;
QDict *rsp;
char *bootpath = g_strdup_printf("%s/bootsect", tmpfs);
@@ -445,11 +445,7 @@ static void test_migrate(void)
/* Wait for the first serial output from the source */
wait_for_serial("src_serial");
- cmd = g_strdup_printf("{ 'execute': 'migrate',"
- "'arguments': { 'uri': '%s' } }",
- uri);
- rsp = qmp(cmd);
- g_free(cmd);
+ rsp = qmp("{ 'execute': 'migrate', 'arguments': { 'uri': %s } }", uri);
g_assert(qdict_haskey(rsp, "return"));
QDECREF(rsp);
diff --git a/tests/test-qga.c b/tests/test-qga.c
index 06783e7585..91a7b6e16b 100644
--- a/tests/test-qga.c
+++ b/tests/test-qga.c
@@ -144,12 +144,11 @@ static void test_qga_sync_delimited(gconstpointer fix)
guint32 v, r = g_random_int();
unsigned char c;
QDict *ret;
- gchar *cmd;
- cmd = g_strdup_printf("\xff{'execute': 'guest-sync-delimited',"
- " 'arguments': {'id': %u } }", r);
- qmp_fd_send(fixture->fd, cmd);
- g_free(cmd);
+ qmp_fd_send(fixture->fd,
+ "\xff{'execute': 'guest-sync-delimited',"
+ " 'arguments': {'id': %u } }",
+ r);
/*
* Read and ignore garbage until resynchronized.
@@ -186,7 +185,6 @@ static void test_qga_sync(gconstpointer fix)
const TestFixture *fixture = fix;
guint32 v, r = g_random_int();
QDict *ret;
- gchar *cmd;
/*
* TODO guest-sync is inherently limited: we cannot distinguish
@@ -199,10 +197,9 @@ static void test_qga_sync(gconstpointer fix)
* invalid JSON. Testing of '\xff' handling is done in
* guest-sync-delimited instead.
*/
- cmd = g_strdup_printf("{'execute': 'guest-sync',"
- " 'arguments': {'id': %u } }", r);
- ret = qmp_fd(fixture->fd, cmd);
- g_free(cmd);
+ ret = qmp_fd(fixture->fd,
+ "{'execute': 'guest-sync', 'arguments': {'id': %u } }",
+ r);
g_assert_nonnull(ret);
qmp_assert_no_error(ret);
@@ -393,7 +390,7 @@ static void test_qga_file_ops(gconstpointer fix)
const TestFixture *fixture = fix;
const unsigned char helloworld[] = "Hello World!\n";
const char *b64;
- gchar *cmd, *path, *enc;
+ gchar *path, *enc;
unsigned char *dec;
QDict *ret, *val;
int64_t id, eof;
@@ -411,10 +408,10 @@ static void test_qga_file_ops(gconstpointer fix)
enc = g_base64_encode(helloworld, sizeof(helloworld));
/* write */
- cmd = g_strdup_printf("{'execute': 'guest-file-write',"
- " 'arguments': { 'handle': %" PRId64 ","
- " 'buf-b64': '%s' } }", id, enc);
- ret = qmp_fd(fixture->fd, cmd);
+ ret = qmp_fd(fixture->fd,
+ "{'execute': 'guest-file-write',"
+ " 'arguments': { 'handle': %" PRId64 ", 'buf-b64': %s } }",
+ id, enc);
g_assert_nonnull(ret);
qmp_assert_no_error(ret);
@@ -424,23 +421,20 @@ static void test_qga_file_ops(gconstpointer fix)
g_assert_cmpint(count, ==, sizeof(helloworld));
g_assert_cmpint(eof, ==, 0);
QDECREF(ret);
- g_free(cmd);
/* flush */
- cmd = g_strdup_printf("{'execute': 'guest-file-flush',"
- " 'arguments': {'handle': %" PRId64 "} }",
- id);
- ret = qmp_fd(fixture->fd, cmd);
+ ret = qmp_fd(fixture->fd,
+ "{'execute': 'guest-file-flush',"
+ " 'arguments': {'handle': %" PRId64 "} }",
+ id);
QDECREF(ret);
- g_free(cmd);
/* close */
- cmd = g_strdup_printf("{'execute': 'guest-file-close',"
- " 'arguments': {'handle': %" PRId64 "} }",
- id);
- ret = qmp_fd(fixture->fd, cmd);
+ ret = qmp_fd(fixture->fd,
+ "{'execute': 'guest-file-close',"
+ " 'arguments': {'handle': %" PRId64 "} }",
+ id);
QDECREF(ret);
- g_free(cmd);
/* check content */
path = g_build_filename(fixture->test_dir, "foo", NULL);
@@ -462,10 +456,10 @@ static void test_qga_file_ops(gconstpointer fix)
QDECREF(ret);
/* read */
- cmd = g_strdup_printf("{'execute': 'guest-file-read',"
- " 'arguments': { 'handle': %" PRId64 "} }",
- id);
- ret = qmp_fd(fixture->fd, cmd);
+ ret = qmp_fd(fixture->fd,
+ "{'execute': 'guest-file-read',"
+ " 'arguments': { 'handle': %" PRId64 "} }",
+ id);
val = qdict_get_qdict(ret, "return");
count = qdict_get_int(val, "count");
eof = qdict_get_bool(val, "eof");
@@ -475,14 +469,13 @@ static void test_qga_file_ops(gconstpointer fix)
g_assert_cmpstr(b64, ==, enc);
QDECREF(ret);
- g_free(cmd);
g_free(enc);
/* read eof */
- cmd = g_strdup_printf("{'execute': 'guest-file-read',"
- " 'arguments': { 'handle': %" PRId64 "} }",
- id);
- ret = qmp_fd(fixture->fd, cmd);
+ ret = qmp_fd(fixture->fd,
+ "{'execute': 'guest-file-read',"
+ " 'arguments': { 'handle': %" PRId64 "} }",
+ id);
val = qdict_get_qdict(ret, "return");
count = qdict_get_int(val, "count");
eof = qdict_get_bool(val, "eof");
@@ -491,14 +484,13 @@ static void test_qga_file_ops(gconstpointer fix)
g_assert(eof);
g_assert_cmpstr(b64, ==, "");
QDECREF(ret);
- g_free(cmd);
/* seek */
- cmd = g_strdup_printf("{'execute': 'guest-file-seek',"
- " 'arguments': { 'handle': %" PRId64 ", "
- " 'offset': %d, 'whence': '%s' } }",
- id, 6, "set");
- ret = qmp_fd(fixture->fd, cmd);
+ ret = qmp_fd(fixture->fd,
+ "{'execute': 'guest-file-seek',"
+ " 'arguments': { 'handle': %" PRId64 ", "
+ " 'offset': %d, 'whence': %s } }",
+ id, 6, "set");
qmp_assert_no_error(ret);
val = qdict_get_qdict(ret, "return");
count = qdict_get_int(val, "position");
@@ -506,13 +498,12 @@ static void test_qga_file_ops(gconstpointer fix)
g_assert_cmpint(count, ==, 6);
g_assert(!eof);
QDECREF(ret);
- g_free(cmd);
/* partial read */
- cmd = g_strdup_printf("{'execute': 'guest-file-read',"
- " 'arguments': { 'handle': %" PRId64 "} }",
- id);
- ret = qmp_fd(fixture->fd, cmd);
+ ret = qmp_fd(fixture->fd,
+ "{'execute': 'guest-file-read',"
+ " 'arguments': { 'handle': %" PRId64 "} }",
+ id);
val = qdict_get_qdict(ret, "return");
count = qdict_get_int(val, "count");
eof = qdict_get_bool(val, "eof");
@@ -525,15 +516,13 @@ static void test_qga_file_ops(gconstpointer fix)
g_free(dec);
QDECREF(ret);
- g_free(cmd);
/* close */
- cmd = g_strdup_printf("{'execute': 'guest-file-close',"
- " 'arguments': {'handle': %" PRId64 "} }",
- id);
- ret = qmp_fd(fixture->fd, cmd);
+ ret = qmp_fd(fixture->fd,
+ "{'execute': 'guest-file-close',"
+ " 'arguments': {'handle': %" PRId64 "} }",
+ id);
QDECREF(ret);
- g_free(cmd);
}
static void test_qga_file_write_read(gconstpointer fix)
@@ -541,7 +530,7 @@ static void test_qga_file_write_read(gconstpointer fix)
const TestFixture *fixture = fix;
const unsigned char helloworld[] = "Hello World!\n";
const char *b64;
- gchar *cmd, *enc;
+ gchar *enc;
QDict *ret, *val;
int64_t id, eof;
gsize count;
@@ -556,10 +545,10 @@ static void test_qga_file_write_read(gconstpointer fix)
enc = g_base64_encode(helloworld, sizeof(helloworld));
/* write */
- cmd = g_strdup_printf("{'execute': 'guest-file-write',"
- " 'arguments': { 'handle': %" PRId64 ","
- " 'buf-b64': '%s' } }", id, enc);
- ret = qmp_fd(fixture->fd, cmd);
+ ret = qmp_fd(fixture->fd,
+ "{'execute': 'guest-file-write',"
+ " 'arguments': { 'handle': %" PRId64 ","
+ " 'buf-b64': %s } }", id, enc);
g_assert_nonnull(ret);
qmp_assert_no_error(ret);
@@ -569,13 +558,12 @@ static void test_qga_file_write_read(gconstpointer fix)
g_assert_cmpint(count, ==, sizeof(helloworld));
g_assert_cmpint(eof, ==, 0);
QDECREF(ret);
- g_free(cmd);
/* read (check implicit flush) */
- cmd = g_strdup_printf("{'execute': 'guest-file-read',"
- " 'arguments': { 'handle': %" PRId64 "} }",
- id);
- ret = qmp_fd(fixture->fd, cmd);
+ ret = qmp_fd(fixture->fd,
+ "{'execute': 'guest-file-read',"
+ " 'arguments': { 'handle': %" PRId64 "} }",
+ id);
val = qdict_get_qdict(ret, "return");
count = qdict_get_int(val, "count");
eof = qdict_get_bool(val, "eof");
@@ -584,14 +572,13 @@ static void test_qga_file_write_read(gconstpointer fix)
g_assert(eof);
g_assert_cmpstr(b64, ==, "");
QDECREF(ret);
- g_free(cmd);
/* seek to 0 */
- cmd = g_strdup_printf("{'execute': 'guest-file-seek',"
- " 'arguments': { 'handle': %" PRId64 ", "
- " 'offset': %d, 'whence': '%s' } }",
- id, 0, "set");
- ret = qmp_fd(fixture->fd, cmd);
+ ret = qmp_fd(fixture->fd,
+ "{'execute': 'guest-file-seek',"
+ " 'arguments': { 'handle': %" PRId64 ", "
+ " 'offset': %d, 'whence': %s } }",
+ id, 0, "set");
qmp_assert_no_error(ret);
val = qdict_get_qdict(ret, "return");
count = qdict_get_int(val, "position");
@@ -599,13 +586,12 @@ static void test_qga_file_write_read(gconstpointer fix)
g_assert_cmpint(count, ==, 0);
g_assert(!eof);
QDECREF(ret);
- g_free(cmd);
/* read */
- cmd = g_strdup_printf("{'execute': 'guest-file-read',"
- " 'arguments': { 'handle': %" PRId64 "} }",
- id);
- ret = qmp_fd(fixture->fd, cmd);
+ ret = qmp_fd(fixture->fd,
+ "{'execute': 'guest-file-read',"
+ " 'arguments': { 'handle': %" PRId64 "} }",
+ id);
val = qdict_get_qdict(ret, "return");
count = qdict_get_int(val, "count");
eof = qdict_get_bool(val, "eof");
@@ -614,16 +600,14 @@ static void test_qga_file_write_read(gconstpointer fix)
g_assert(eof);
g_assert_cmpstr(b64, ==, enc);
QDECREF(ret);
- g_free(cmd);
g_free(enc);
/* close */
- cmd = g_strdup_printf("{'execute': 'guest-file-close',"
- " 'arguments': {'handle': %" PRId64 "} }",
- id);
- ret = qmp_fd(fixture->fd, cmd);
+ ret = qmp_fd(fixture->fd,
+ "{'execute': 'guest-file-close',"
+ " 'arguments': {'handle': %" PRId64 "} }",
+ id);
QDECREF(ret);
- g_free(cmd);
}
static void test_qga_get_time(gconstpointer fix)
@@ -647,7 +631,6 @@ static void test_qga_set_time(gconstpointer fix)
const TestFixture *fixture = fix;
QDict *ret;
int64_t current, time;
- gchar *cmd;
/* get current time */
ret = qmp_fd(fixture->fd, "{'execute': 'guest-get-time'}");
@@ -673,11 +656,10 @@ static void test_qga_set_time(gconstpointer fix)
QDECREF(ret);
/* set back current time */
- cmd = g_strdup_printf("{'execute': 'guest-set-time',"
- " 'arguments': { 'time': %" PRId64 " } }",
- current + time * 1000);
- ret = qmp_fd(fixture->fd, cmd);
- g_free(cmd);
+ ret = qmp_fd(fixture->fd,
+ "{'execute': 'guest-set-time',"
+ " 'arguments': { 'time': %" PRId64 " } }",
+ current + time * 1000);
g_assert_nonnull(ret);
qmp_assert_no_error(ret);
QDECREF(ret);
@@ -864,7 +846,6 @@ static void test_qga_guest_exec(gconstpointer fix)
int64_t pid, now, exitcode;
gsize len;
bool exited;
- char *cmd;
/* exec 'echo foo bar' */
ret = qmp_fd(fixture->fd, "{'execute': 'guest-exec', 'arguments': {"
@@ -879,10 +860,10 @@ static void test_qga_guest_exec(gconstpointer fix)
/* wait for completion */
now = g_get_monotonic_time();
- cmd = g_strdup_printf("{'execute': 'guest-exec-status',"
- " 'arguments': { 'pid': %" PRId64 " } }", pid);
do {
- ret = qmp_fd(fixture->fd, cmd);
+ ret = qmp_fd(fixture->fd,
+ "{'execute': 'guest-exec-status',"
+ " 'arguments': { 'pid': %" PRId64 " } }", pid);
g_assert_nonnull(ret);
val = qdict_get_qdict(ret, "return");
exited = qdict_get_bool(val, "exited");
@@ -892,7 +873,6 @@ static void test_qga_guest_exec(gconstpointer fix)
} while (!exited &&
g_get_monotonic_time() < now + 5 * G_TIME_SPAN_SECOND);
g_assert(exited);
- g_free(cmd);
/* check stdout */
exitcode = qdict_get_int(val, "exitcode");
diff --git a/tests/vhost-user-test.c b/tests/vhost-user-test.c
index d4da09f147..f2a2b6cad9 100644
--- a/tests/vhost-user-test.c
+++ b/tests/vhost-user-test.c
@@ -662,11 +662,7 @@ static void test_migrate(void)
g_assert(qdict_haskey(rsp, "return"));
QDECREF(rsp);
- cmd = g_strdup_printf("{ 'execute': 'migrate',"
- "'arguments': { 'uri': '%s' } }",
- uri);
- rsp = qmp(cmd);
- g_free(cmd);
+ rsp = qmp("{ 'execute': 'migrate', 'arguments': { 'uri': %s } }", uri);
g_assert(qdict_haskey(rsp, "return"));
QDECREF(rsp);
--
2.13.3
- [Qemu-devel] [PATCH v3 01/12] qobject: Accept "%"PRId64 in qobject_from_jsonf(), (continued)
[Qemu-devel] [PATCH v3 05/12] tests: Clean up string interpolation into QMP input (simple cases),
Eric Blake <=
[Qemu-devel] [PATCH v3 06/12] tests/libqos/usb: Clean up string interpolation into QMP input, Eric Blake, 2017/07/25
[Qemu-devel] [PATCH v3 04/12] tests: Pass literal format strings directly to qmp_FOO(), Eric Blake, 2017/07/25
[Qemu-devel] [PATCH v3 07/12] qtest: Add a new helper qmp_cmd() and friends, Eric Blake, 2017/07/25