#include "missing.h"
#include "def.h"
#include "cgroup-util.h"
+#include "hostname-util.h"
#include "bus-label.h"
#include "sd-bus.h"
#include "bus-track.h"
#include "bus-slot.h"
+#define log_debug_bus_message(m) \
+ do { \
+ sd_bus_message *_mm = (m); \
+ log_debug("Got message type=%s sender=%s destination=%s object=%s interface=%s member=%s cookie=%" PRIu64 " reply_cookie=%" PRIu64 " error=%s", \
+ bus_message_type_to_string(_mm->header->type), \
+ strna(sd_bus_message_get_sender(_mm)), \
+ strna(sd_bus_message_get_destination(_mm)), \
+ strna(sd_bus_message_get_path(_mm)), \
+ strna(sd_bus_message_get_interface(_mm)), \
+ strna(sd_bus_message_get_member(_mm)), \
+ BUS_MESSAGE_COOKIE(_mm), \
+ _mm->reply_cookie, \
+ strna(_mm->error.message)); \
+ } while (false)
+
static int bus_poll(sd_bus *bus, bool need_more, uint64_t timeout_usec);
static int attach_io_events(sd_bus *b);
static void detach_io_events(sd_bus *b);
detach_io_events(b);
- if (b->input_fd >= 0)
- safe_close(b->input_fd);
-
- if (b->output_fd >= 0 && b->output_fd != b->input_fd)
+ if (b->input_fd != b->output_fd)
safe_close(b->output_fd);
-
- b->input_fd = b->output_fd = -1;
+ b->output_fd = b->input_fd = safe_close(b->input_fd);
}
static void bus_reset_queues(sd_bus *b) {
while (b->rqueue_size > 0)
sd_bus_message_unref(b->rqueue[--b->rqueue_size]);
- free(b->rqueue);
- b->rqueue = NULL;
+ b->rqueue = mfree(b->rqueue);
b->rqueue_allocated = 0;
while (b->wqueue_size > 0)
sd_bus_message_unref(b->wqueue[--b->wqueue_size]);
- free(b->wqueue);
- b->wqueue = NULL;
+ b->wqueue = mfree(b->wqueue);
b->wqueue_allocated = 0;
}
if (b->kdbus_buffer)
munmap(b->kdbus_buffer, KDBUS_POOL_SIZE);
+ free(b->label);
free(b->rbuffer);
free(b->unique_name);
free(b->auth_buffer);
_public_ int sd_bus_set_fd(sd_bus *bus, int input_fd, int output_fd) {
assert_return(bus, -EINVAL);
assert_return(bus->state == BUS_UNSET, -EPERM);
- assert_return(input_fd >= 0, -EINVAL);
- assert_return(output_fd >= 0, -EINVAL);
+ assert_return(input_fd >= 0, -EBADF);
+ assert_return(output_fd >= 0, -EBADF);
assert_return(!bus_pid_changed(bus), -ECHILD);
bus->input_fd = input_fd;
return 0;
}
+/// UNNEEDED by elogind
+#if 0
_public_ int sd_bus_set_exec(sd_bus *bus, const char *path, char *const argv[]) {
char *p, **a;
return 0;
}
+#endif // 0
_public_ int sd_bus_negotiate_creds(sd_bus *bus, int b, uint64_t mask) {
uint64_t new_flags;
return 0;
}
+/// UNNEEDED by elogind
+#if 0
_public_ int sd_bus_set_anonymous(sd_bus *bus, int b) {
assert_return(bus, -EINVAL);
assert_return(bus->state == BUS_UNSET, -EPERM);
return free_and_strdup(&bus->description, description);
}
+#endif // 0
_public_ int sd_bus_set_allow_interactive_authorization(sd_bus *bus, int b) {
assert_return(bus, -EINVAL);
return 0;
}
+/// UNNEEDED by elogind
+#if 0
_public_ int sd_bus_get_allow_interactive_authorization(sd_bus *bus) {
assert_return(bus, -EINVAL);
assert_return(!bus_pid_changed(bus), -ECHILD);
return bus->allow_interactive_authorization;
}
+#endif // 0
static int hello_callback(sd_bus_message *reply, void *userdata, sd_bus_error *error) {
const char *s;
} else
b->nspid = 0;
- free(b->kernel);
- b->kernel = strdup("/sys/fs/kdbus/0-system/bus");
- if (!b->kernel)
- return -ENOMEM;
+ r = free_and_strdup(&b->kernel, "/sys/fs/kdbus/0-system/bus");
+ if (r < 0)
+ return r;
return 0;
}
zero(b->sockaddr);
b->sockaddr_size = 0;
- strv_free(b->exec_argv);
- free(b->exec_path);
- b->exec_path = NULL;
- b->exec_argv = NULL;
+ b->exec_argv = strv_free(b->exec_argv);
+ b->exec_path = mfree(b->exec_path);
b->server_id = SD_ID128_NULL;
- free(b->kernel);
- b->kernel = NULL;
- free(b->machine);
- b->machine = NULL;
+ b->kernel = mfree(b->kernel);
+ b->machine = mfree(b->machine);
b->nspid = 0;
}
}
static int bus_start_address(sd_bus *b) {
+ bool container_kdbus_available = false;
+ bool kdbus_available = false;
int r;
assert(b);
bus_close_fds(b);
+ /*
+ * Usually, if you provide multiple different bus-addresses, we
+ * try all of them in order. We use the first one that
+ * succeeds. However, if you mix kernel and unix addresses, we
+ * never try unix-addresses if a previous kernel address was
+ * tried and kdbus was available. This is required to prevent
+ * clients to fallback to the bus-proxy if kdbus is available
+ * but failed (eg., too many connections).
+ */
+
if (b->exec_path)
r = bus_socket_exec(b);
- else if ((b->nspid > 0 || b->machine) && b->kernel)
+
+ else if ((b->nspid > 0 || b->machine) && b->kernel) {
r = bus_container_connect_kernel(b);
- else if ((b->nspid > 0 || b->machine) && b->sockaddr.sa.sa_family != AF_UNSPEC)
- r = bus_container_connect_socket(b);
- else if (b->kernel)
+ if (r < 0 && !IN_SET(r, -ENOENT, -ESOCKTNOSUPPORT))
+ container_kdbus_available = true;
+
+ } else if ((b->nspid > 0 || b->machine) && b->sockaddr.sa.sa_family != AF_UNSPEC) {
+ if (!container_kdbus_available)
+ r = bus_container_connect_socket(b);
+ else
+ skipped = true;
+
+ } else if (b->kernel) {
r = bus_kernel_connect(b);
- else if (b->sockaddr.sa.sa_family != AF_UNSPEC)
- r = bus_socket_connect(b);
- else
+ if (r < 0 && !IN_SET(r, -ENOENT, -ESOCKTNOSUPPORT))
+ kdbus_available = true;
+
+ } else if (b->sockaddr.sa.sa_family != AF_UNSPEC) {
+ if (!kdbus_available)
+ r = bus_socket_connect(b);
+ else
+ skipped = true;
+
+ } else
skipped = true;
if (!skipped) {
e = secure_getenv("DBUS_STARTER_ADDRESS");
if (!e) {
+ if (cg_pid_get_owner_uid(0, NULL) >= 0)
+ return sd_bus_open_user(ret);
+ else
return sd_bus_open_system(ret);
}
if (!ee)
return -ENOMEM;
-#ifdef ENABLE_KDBUS
(void) asprintf(&b->address, KERNEL_USER_BUS_ADDRESS_FMT ";" UNIX_USER_BUS_ADDRESS_FMT, getuid(), ee);
-#else
- (void) asprintf(&b->address, UNIX_USER_BUS_ADDRESS_FMT, ee);
-#endif
- } else {
-#ifdef ENABLE_KDBUS
+ } else
(void) asprintf(&b->address, KERNEL_USER_BUS_ADDRESS_FMT, getuid());
-#else
- return -ECONNREFUSED;
-#endif
- }
if (!b->address)
return -ENOMEM;
if (!e)
return -ENOMEM;
-#ifdef ENABLE_KDBUS
b->address = strjoin("x-machine-kernel:machine=", e, ";x-machine-unix:machine=", e, NULL);
-#else
- b->address = strjoin("x-machine-unix:machine=", e, NULL);
-#endif
if (!b->address)
return -ENOMEM;
* ioctl on the fd when they are freed. */
}
+_public_ sd_bus* sd_bus_flush_close_unref(sd_bus *bus) {
+
+ if (!bus)
+ return NULL;
+
+ sd_bus_flush(bus);
+ sd_bus_close(bus);
+
+ return sd_bus_unref(bus);
+}
+
static void bus_enter_closing(sd_bus *bus) {
assert(bus);
return NULL;
}
+/// UNNEEDED by elogind
+#if 0
_public_ int sd_bus_is_open(sd_bus *bus) {
assert_return(bus, -EINVAL);
return BUS_IS_OPEN(bus->state);
}
+#endif // 0
_public_ int sd_bus_can_send(sd_bus *bus, char type) {
int r;
return bus_type_is_valid(type);
}
+/// UNNEEDED by elogind
+#if 0
_public_ int sd_bus_get_bus_id(sd_bus *bus, sd_id128_t *id) {
int r;
*id = bus->server_id;
return 0;
}
+#endif // 0
static int bus_seal_message(sd_bus *b, sd_bus_message *m, usec_t timeout) {
assert(b);
_cleanup_bus_message_unref_ sd_bus_message *m = sd_bus_message_ref(_m);
int r;
- assert_return(bus, -EINVAL);
assert_return(m, -EINVAL);
+
+ if (!bus)
+ bus = m->bus;
+
assert_return(!bus_pid_changed(bus), -ECHILD);
assert_return(!bus->is_kernel || !(bus->hello_flags & KDBUS_HELLO_MONITOR), -EROFS);
_public_ int sd_bus_send_to(sd_bus *bus, sd_bus_message *m, const char *destination, uint64_t *cookie) {
int r;
- assert_return(bus, -EINVAL);
assert_return(m, -EINVAL);
+
+ if (!bus)
+ bus = m->bus;
+
assert_return(!bus_pid_changed(bus), -ECHILD);
if (!BUS_IS_OPEN(bus->state))
_cleanup_bus_slot_unref_ sd_bus_slot *s = NULL;
int r;
- assert_return(bus, -EINVAL);
assert_return(m, -EINVAL);
assert_return(m->header->type == SD_BUS_MESSAGE_METHOD_CALL, -EINVAL);
assert_return(!(m->header->flags & BUS_MESSAGE_NO_REPLY_EXPECTED), -EINVAL);
assert_return(callback, -EINVAL);
+
+ if (!bus)
+ bus = m->bus;
+
assert_return(!bus_pid_changed(bus), -ECHILD);
assert_return(!bus->is_kernel || !(bus->hello_flags & KDBUS_HELLO_MONITOR), -EROFS);
unsigned i;
int r;
- assert_return(bus, -EINVAL);
- assert_return(m, -EINVAL);
- assert_return(m->header->type == SD_BUS_MESSAGE_METHOD_CALL, -EINVAL);
- assert_return(!(m->header->flags & BUS_MESSAGE_NO_REPLY_EXPECTED), -EINVAL);
- assert_return(!bus_error_is_dirty(error), -EINVAL);
- assert_return(!bus_pid_changed(bus), -ECHILD);
- assert_return(!bus->is_kernel || !(bus->hello_flags & KDBUS_HELLO_MONITOR), -EROFS);
+ bus_assert_return(m, -EINVAL, error);
+ bus_assert_return(m->header->type == SD_BUS_MESSAGE_METHOD_CALL, -EINVAL, error);
+ bus_assert_return(!(m->header->flags & BUS_MESSAGE_NO_REPLY_EXPECTED), -EINVAL, error);
+ bus_assert_return(!bus_error_is_dirty(error), -EINVAL, error);
- if (!BUS_IS_OPEN(bus->state))
- return -ENOTCONN;
+ if (!bus)
+ bus = m->bus;
+
+ bus_assert_return(!bus_pid_changed(bus), -ECHILD, error);
+ bus_assert_return(!bus->is_kernel || !(bus->hello_flags & KDBUS_HELLO_MONITOR), -EROFS, error);
+
+ if (!BUS_IS_OPEN(bus->state)) {
+ r = -ENOTCONN;
+ goto fail;
+ }
r = bus_ensure_running(bus);
if (r < 0)
- return r;
+ goto fail;
i = bus->rqueue_size;
r = bus_seal_message(bus, m, usec);
if (r < 0)
- return r;
+ goto fail;
r = bus_remarshal_message(bus, &m);
if (r < 0)
- return r;
+ goto fail;
r = bus_send_internal(bus, m, &cookie, true);
if (r < 0)
- return r;
+ goto fail;
timeout = calc_elapse(m->timeout);
memmove(bus->rqueue + i, bus->rqueue + i + 1, sizeof(sd_bus_message*) * (bus->rqueue_size - i - 1));
bus->rqueue_size--;
+ log_debug_bus_message(incoming);
if (incoming->header->type == SD_BUS_MESSAGE_METHOD_RETURN) {
}
r = sd_bus_error_setf(error, SD_BUS_ERROR_INCONSISTENT_MESSAGE, "Reply message contained file descriptors which I couldn't accept. Sorry.");
+ sd_bus_message_unref(incoming);
+ return r;
- } else if (incoming->header->type == SD_BUS_MESSAGE_METHOD_ERROR)
+ } else if (incoming->header->type == SD_BUS_MESSAGE_METHOD_ERROR) {
r = sd_bus_error_copy(error, &incoming->error);
- else
- r = -EIO;
-
sd_bus_message_unref(incoming);
return r;
+ } else {
+ r = -EIO;
+ goto fail;
+ }
} else if (BUS_MESSAGE_COOKIE(incoming) == cookie &&
bus->unique_name &&
* immediately. */
sd_bus_message_unref(incoming);
- return -ELOOP;
+ r = -ELOOP;
+ goto fail;
}
/* Try to read more, right-away */
if (r < 0) {
if (r == -ENOTCONN || r == -ECONNRESET || r == -EPIPE || r == -ESHUTDOWN) {
bus_enter_closing(bus);
- return -ECONNRESET;
+ r = -ECONNRESET;
}
- return r;
+ goto fail;
}
if (r > 0)
continue;
usec_t n;
n = now(CLOCK_MONOTONIC);
- if (n >= timeout)
- return -ETIMEDOUT;
+ if (n >= timeout) {
+ r = -ETIMEDOUT;
+ goto fail;
+ }
left = timeout - n;
} else
r = bus_poll(bus, true, left);
if (r < 0)
- return r;
- if (r == 0)
- return -ETIMEDOUT;
+ goto fail;
+ if (r == 0) {
+ r = -ETIMEDOUT;
+ goto fail;
+ }
r = dispatch_wqueue(bus);
if (r < 0) {
if (r == -ENOTCONN || r == -ECONNRESET || r == -EPIPE || r == -ESHUTDOWN) {
bus_enter_closing(bus);
- return -ECONNRESET;
+ r = -ECONNRESET;
}
- return r;
+ goto fail;
}
}
+
+fail:
+ return sd_bus_error_set_errno(error, r);
}
_public_ int sd_bus_get_fd(sd_bus *bus) {
bus->current_message = m;
bus->iteration_counter++;
- log_debug("Got message type=%s sender=%s destination=%s object=%s interface=%s member=%s cookie=%" PRIu64 " reply_cookie=%" PRIu64 " error=%s",
- bus_message_type_to_string(m->header->type),
- strna(sd_bus_message_get_sender(m)),
- strna(sd_bus_message_get_destination(m)),
- strna(sd_bus_message_get_path(m)),
- strna(sd_bus_message_get_interface(m)),
- strna(sd_bus_message_get_member(m)),
- BUS_MESSAGE_COOKIE(m),
- m->reply_cookie,
- strna(m->error.message));
+ log_debug_bus_message(m);
r = process_hello(bus, m);
if (r != 0)
return bus_process_internal(bus, false, 0, ret);
}
+/// UNNEEDED by elogind
+#if 0
_public_ int sd_bus_process_priority(sd_bus *bus, int64_t priority, sd_bus_message **ret) {
return bus_process_internal(bus, true, priority, ret);
}
+#endif // 0
static int bus_poll(sd_bus *bus, bool need_more, uint64_t timeout_usec) {
struct pollfd p[2] = {};
s->match_callback.cookie = ++bus->match_cookie;
if (bus->bus_client) {
+ enum bus_match_scope scope;
- if (!bus->is_kernel) {
- /* When this is not a kernel transport, we
- * store the original match string, so that we
- * can use it to remove the match again */
+ scope = bus_match_get_scope(components, n_components);
- s->match_callback.match_string = strdup(match);
- if (!s->match_callback.match_string) {
- r = -ENOMEM;
- goto finish;
+ /* Do not install server-side matches for matches
+ * against the local service, interface or bus
+ * path. */
+ if (scope != BUS_MATCH_LOCAL) {
+
+ if (!bus->is_kernel) {
+ /* When this is not a kernel transport, we
+ * store the original match string, so that we
+ * can use it to remove the match again */
+
+ s->match_callback.match_string = strdup(match);
+ if (!s->match_callback.match_string) {
+ r = -ENOMEM;
+ goto finish;
+ }
}
- }
- r = bus_add_match_internal(bus, s->match_callback.match_string, components, n_components, s->match_callback.cookie);
- if (r < 0)
- goto finish;
+ r = bus_add_match_internal(bus, s->match_callback.match_string, components, n_components, s->match_callback.cookie);
+ if (r < 0)
+ goto finish;
+
+ s->match_added = true;
+ }
}
bus->match_callbacks_modified = true;
return r;
}
+/// UNNEEDED by elogind
+#if 0
int bus_remove_match_by_string(
sd_bus *bus,
const char *match,
return r;
}
+#endif // 0
bool bus_pid_changed(sd_bus *bus) {
assert(bus);
return bus->current_message;
}
+/// UNNEEDED by elogind
+#if 0
_public_ sd_bus_slot* sd_bus_get_current_slot(sd_bus *bus) {
assert_return(bus, NULL);
return bus->current_slot;
}
+#endif // 0
_public_ sd_bus_message_handler_t sd_bus_get_current_handler(sd_bus *bus) {
assert_return(bus, NULL);
/* Finally, if nothing is set use the cached connection for
* the right scope */
+ if (cg_pid_get_owner_uid(0, NULL) >= 0)
+ return sd_bus_default_user(ret);
+ else
return sd_bus_default_system(ret);
}
+/// UNNEEDED by elogind
+#if 0
_public_ int sd_bus_get_tid(sd_bus *b, pid_t *tid) {
assert_return(b, -EINVAL);
assert_return(tid, -EINVAL);
*external_id = ret;
return 1;
}
+#endif // 0
_public_ int sd_bus_try_close(sd_bus *bus) {
int r;
return 0;
}
+/// UNNEEDED by elogind
+#if 0
_public_ int sd_bus_get_description(sd_bus *bus, const char **description) {
assert_return(bus, -EINVAL);
assert_return(description, -EINVAL);
*description = bus->description;
return 0;
}
+#endif // 0
int bus_get_root_path(sd_bus *bus) {
int r;
return r;
}
+/// UNNEEDED by elogind
+#if 0
_public_ int sd_bus_get_scope(sd_bus *bus, const char **scope) {
int r;
return -ENODATA;
}
-int sd_bus_get_creds_mask(sd_bus *bus, uint64_t *mask) {
+_public_ int sd_bus_get_creds_mask(sd_bus *bus, uint64_t *mask) {
assert_return(bus, -EINVAL);
assert_return(mask, -EINVAL);
assert_return(!bus_pid_changed(bus), -ECHILD);
return 0;
}
-int sd_bus_is_bus_client(sd_bus *bus) {
+_public_ int sd_bus_is_bus_client(sd_bus *bus) {
assert_return(bus, -EINVAL);
assert_return(!bus_pid_changed(bus), -ECHILD);
return bus->bus_client;
}
-int sd_bus_is_server(sd_bus *bus) {
+_public_ int sd_bus_is_server(sd_bus *bus) {
assert_return(bus, -EINVAL);
assert_return(!bus_pid_changed(bus), -ECHILD);
return bus->is_server;
}
-int sd_bus_is_anonymous(sd_bus *bus) {
+_public_ int sd_bus_is_anonymous(sd_bus *bus) {
assert_return(bus, -EINVAL);
assert_return(!bus_pid_changed(bus), -ECHILD);
return bus->anonymous_auth;
}
-int sd_bus_is_trusted(sd_bus *bus) {
+_public_ int sd_bus_is_trusted(sd_bus *bus) {
assert_return(bus, -EINVAL);
assert_return(!bus_pid_changed(bus), -ECHILD);
return bus->trusted;
}
-int sd_bus_is_monitor(sd_bus *bus) {
+_public_ int sd_bus_is_monitor(sd_bus *bus) {
assert_return(bus, -EINVAL);
assert_return(!bus_pid_changed(bus), -ECHILD);
return !!(bus->hello_flags & KDBUS_HELLO_MONITOR);
}
+#endif // 0
~ianmdlvl / elogind.git / blobdiff