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execute: take ownership of more fields in ExecParameters 

Let's simplify things a bit, and take ownership of more fields in
ExecParameters, so that they are automatically freed when the structure
is released.
This commit is contained in:
Lennart Poettering 2020-07-22 15:18:43 +02:00
parent 3bb4126262
commit c3f8a065e9
2 changed files with 18 additions and 19 deletions
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5
src/core/execute.c
View File

@ -5761,7 +5761,10 @@ void exec_params_clear(ExecParameters *p) {
if (!p)
return;
strv_free(p->environment);
p->environment = strv_free(p->environment);
p->fd_names = strv_free(p->fd_names);
p->fds = mfree(p->fds);
p->exec_fd = safe_close(p->exec_fd);
}
static const char* const exec_input_table[_EXEC_INPUT_MAX] = {

32
src/core/service.c
View File

@ -1442,17 +1442,15 @@ static int service_spawn(
pid_t *_pid) {
_cleanup_(exec_params_clear) ExecParameters exec_params = {
.flags = flags,
.stdin_fd = -1,
.stdout_fd = -1,
.stderr_fd = -1,
.exec_fd = -1,
.flags = flags,
.stdin_fd = -1,
.stdout_fd = -1,
.stderr_fd = -1,
.exec_fd = -1,
};
_cleanup_strv_free_ char **final_env = NULL, **our_env = NULL, **fd_names = NULL;
_cleanup_(sd_event_source_unrefp) sd_event_source *exec_fd_source = NULL;
size_t n_socket_fds = 0, n_storage_fds = 0, n_env = 0;
_cleanup_close_ int exec_fd = -1;
_cleanup_free_ int *fds = NULL;
_cleanup_strv_free_ char **final_env = NULL, **our_env = NULL;
size_t n_env = 0;
pid_t pid;
int r;
@ -1477,17 +1475,21 @@ static int service_spawn(
s->exec_context.std_output == EXEC_OUTPUT_SOCKET ||
s->exec_context.std_error == EXEC_OUTPUT_SOCKET) {
r = service_collect_fds(s, &fds, &fd_names, &n_socket_fds, &n_storage_fds);
r = service_collect_fds(s,
&exec_params.fds,
&exec_params.fd_names,
&exec_params.n_socket_fds,
&exec_params.n_storage_fds);
if (r < 0)
return r;
log_unit_debug(UNIT(s), "Passing %zu fds to service", n_socket_fds + n_storage_fds);
log_unit_debug(UNIT(s), "Passing %zu fds to service", exec_params.n_socket_fds + exec_params.n_storage_fds);
}
if (!FLAGS_SET(flags, EXEC_IS_CONTROL) && s->type == SERVICE_EXEC) {
assert(!s->exec_fd_event_source);
r = service_allocate_exec_fd(s, &exec_fd_source, &exec_fd);
r = service_allocate_exec_fd(s, &exec_fd_source, &exec_params.exec_fd);
if (r < 0)
return r;
}
@ -1527,7 +1529,6 @@ static int service_spawn(
if (getpeername(s->socket_fd, &sa.sa, &salen) >= 0 &&
IN_SET(sa.sa.sa_family, AF_INET, AF_INET6, AF_VSOCK)) {
_cleanup_free_ char *addr = NULL;
char *t;
unsigned port;
@ -1582,10 +1583,6 @@ static int service_spawn(
MANAGER_IS_SYSTEM(UNIT(s)->manager) && unit_has_name(UNIT(s), SPECIAL_DBUS_SERVICE));
strv_free_and_replace(exec_params.environment, final_env);
exec_params.fds = fds;
exec_params.fd_names = fd_names;
exec_params.n_socket_fds = n_socket_fds;
exec_params.n_storage_fds = n_storage_fds;
exec_params.watchdog_usec = service_get_watchdog_usec(s);
exec_params.selinux_context_net = s->socket_fd_selinux_context_net;
if (s->type == SERVICE_IDLE)
@ -1593,7 +1590,6 @@ static int service_spawn(
exec_params.stdin_fd = s->stdin_fd;
exec_params.stdout_fd = s->stdout_fd;
exec_params.stderr_fd = s->stderr_fd;
exec_params.exec_fd = exec_fd;
r = exec_spawn(UNIT(s),
c,