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authorStefan Hajnoczi <stefanha@redhat.com>2013-11-21 11:33:17 +0100
committerStefan Hajnoczi <stefanha@redhat.com>2014-02-03 16:06:24 +0100
commit1ad3c6abc0d67e00b84abaa5527bc64b70ca2205 (patch)
tree32a8784435829995303cf37f1abbd624de256827 /tests
parent2f61120c10da9128357510debc8e66880cd2bfdc (diff)
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qtest: unlink QEMU pid file after startup
After starting the QEMU process and initializing the QMP connection, we can read the pid file and unlink it. Just stash away the pid instead of the pid filename. This way we can avoid pid file leaks since running tests may abort(3) without cleanup. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Diffstat (limited to 'tests')
-rw-r--r--tests/libqtest.c22
1 files changed, 11 insertions, 11 deletions
diff --git a/tests/libqtest.c b/tests/libqtest.c
index 359d571..dd93be8 100644
--- a/tests/libqtest.c
+++ b/tests/libqtest.c
@@ -43,8 +43,8 @@ struct QTestState
int qmp_fd;
bool irq_level[MAX_IRQ];
GString *rx;
- gchar *pid_file; /* QEMU PID file */
int child_pid; /* Child process created to execute QEMU */
+ pid_t qemu_pid; /* QEMU process spawned by our child */
char *socket_path, *qmp_socket_path;
};
@@ -90,13 +90,13 @@ static int socket_accept(int sock)
return ret;
}
-static pid_t qtest_qemu_pid(QTestState *s)
+static pid_t read_pid_file(const char *pid_file)
{
FILE *f;
char buffer[1024];
pid_t pid = -1;
- f = fopen(s->pid_file, "r");
+ f = fopen(pid_file, "r");
if (f) {
if (fgets(buffer, sizeof(buffer), f)) {
pid = atoi(buffer);
@@ -147,7 +147,6 @@ QTestState *qtest_init(const char *extra_args)
s->qmp_fd = socket_accept(qmpsock);
s->rx = g_string_new("");
- s->pid_file = pid_file;
s->child_pid = pid;
for (i = 0; i < MAX_IRQ; i++) {
s->irq_level[i] = false;
@@ -157,8 +156,12 @@ QTestState *qtest_init(const char *extra_args)
qtest_qmp_discard_response(s, "");
qtest_qmp_discard_response(s, "{ 'execute': 'qmp_capabilities' }");
+ s->qemu_pid = read_pid_file(pid_file);
+ unlink(pid_file);
+ g_free(pid_file);
+
if (getenv("QTEST_STOP")) {
- kill(qtest_qemu_pid(s), SIGSTOP);
+ kill(s->qemu_pid, SIGSTOP);
}
return s;
@@ -168,19 +171,16 @@ void qtest_quit(QTestState *s)
{
int status;
- pid_t pid = qtest_qemu_pid(s);
- if (pid != -1) {
- kill(pid, SIGTERM);
- waitpid(pid, &status, 0);
+ if (s->qemu_pid != -1) {
+ kill(s->qemu_pid, SIGTERM);
+ waitpid(s->qemu_pid, &status, 0);
}
close(s->fd);
close(s->qmp_fd);
g_string_free(s->rx, true);
- unlink(s->pid_file);
unlink(s->socket_path);
unlink(s->qmp_socket_path);
- g_free(s->pid_file);
g_free(s->socket_path);
g_free(s->qmp_socket_path);
g_free(s);