assert(part);
if (part->memfd >= 0) {
+ /* If we can reuse the memfd, try that. For that it
+ * can't be sealed yet. */
if (!part->sealed)
bus_kernel_push_memfd(m->bus, part->memfd, part->data, part->mapped);
else {
- if (part->size > 0)
- assert_se(munmap(part->data, PAGE_ALIGN(part->size)) == 0);
+ if (part->mapped > 0)
+ assert_se(munmap(part->data, part->mapped) == 0);
close_nointr_nofail(part->memfd);
}
- } else if (part->free_this)
+ } else if (part->munmap_this)
+ munmap(part->data, part->mapped);
+ else if (part->free_this)
free(part->data);
if (part != &m->body)
if (m->free_kdbus)
free(m->kdbus);
- if (m->release_kdbus)
- ioctl(m->bus->input_fd, KDBUS_CMD_MSG_RELEASE, m->kdbus);
+ if (m->release_kdbus) {
+ uint64_t off;
- if (m->free_fds) {
- close_many(m->fds, m->n_fds);
- free(m->fds);
+ off = (uint8_t *)m->kdbus - (uint8_t *)m->bus->kdbus_buffer;
+ ioctl(m->bus->input_fd, KDBUS_CMD_MSG_RELEASE, &off);
}
if (m->bus)
sd_bus_unref(m->bus);
+ if (m->free_fds) {
+ close_many(m->fds, m->n_fds);
+ free(m->fds);
+ }
+
if (m->iovec != m->iovec_fixed)
free(m->iovec);
- free(m->cmdline_array);
-
message_reset_containers(m);
free(m->root_container.signature);
free(m->peeked_signature);
- free(m->unit);
- free(m->user_unit);
- free(m->session);
+ bus_creds_done(&m->creds);
free(m);
}
}
int bus_message_from_header(
+ sd_bus *bus,
void *buffer,
size_t length,
int *fds,
m->n_fds = n_fds;
if (ucred) {
- m->uid = ucred->uid;
- m->pid = ucred->pid;
- m->gid = ucred->gid;
- m->uid_valid = m->gid_valid = true;
+ m->creds.uid = ucred->uid;
+ m->creds.pid = ucred->pid;
+ m->creds.gid = ucred->gid;
+ m->creds.mask |= SD_BUS_CREDS_UID | SD_BUS_CREDS_PID | SD_BUS_CREDS_GID;
}
if (label) {
- m->label = (char*) m + ALIGN(sizeof(sd_bus_message)) + ALIGN(extra);
- memcpy(m->label, label, label_sz + 1);
+ m->creds.label = (char*) m + ALIGN(sizeof(sd_bus_message)) + ALIGN(extra);
+ memcpy(m->creds.label, label, label_sz + 1);
+
+ m->creds.mask |= SD_BUS_CREDS_SELINUX_CONTEXT;
}
+ if (bus)
+ m->bus = sd_bus_ref(bus);
+
*ret = m;
return 0;
}
int bus_message_from_malloc(
+ sd_bus *bus,
void *buffer,
size_t length,
int *fds,
sd_bus_message *m;
int r;
- r = bus_message_from_header(buffer, length, fds, n_fds, ucred, label, 0, &m);
+ r = bus_message_from_header(bus, buffer, length, fds, n_fds, ucred, label, 0, &m);
if (r < 0)
return r;
return m;
}
-int sd_bus_message_new_signal(
+_public_ int sd_bus_message_new_signal(
sd_bus *bus,
const char *path,
const char *interface,
sd_bus_message *t;
int r;
- if (!path)
- return -EINVAL;
- if (!interface)
- return -EINVAL;
- if (!member)
- return -EINVAL;
- if (!m)
- return -EINVAL;
- if (bus && bus->state == BUS_UNSET)
- return -ENOTCONN;
+ assert_return(!bus || bus->state != BUS_UNSET, -ENOTCONN);
+ assert_return(object_path_is_valid(path), -EINVAL);
+ assert_return(interface_name_is_valid(interface), -EINVAL);
+ assert_return(member_name_is_valid(member), -EINVAL);
+ assert_return(m, -EINVAL);
- t = message_new(bus, SD_BUS_MESSAGE_TYPE_SIGNAL);
+ t = message_new(bus, SD_BUS_MESSAGE_SIGNAL);
if (!t)
return -ENOMEM;
return r;
}
-int sd_bus_message_new_method_call(
+_public_ int sd_bus_message_new_method_call(
sd_bus *bus,
const char *destination,
const char *path,
sd_bus_message *t;
int r;
- if (!path)
- return -EINVAL;
- if (!member)
- return -EINVAL;
- if (!m)
- return -EINVAL;
- if (bus && bus->state == BUS_UNSET)
- return -ENOTCONN;
+ assert_return(!bus || bus->state != BUS_UNSET, -ENOTCONN);
+ assert_return(!destination || service_name_is_valid(destination), -EINVAL);
+ assert_return(object_path_is_valid(path), -EINVAL);
+ assert_return(!interface || interface_name_is_valid(interface), -EINVAL);
+ assert_return(member_name_is_valid(member), -EINVAL);
+ assert_return(m, -EINVAL);
- t = message_new(bus, SD_BUS_MESSAGE_TYPE_METHOD_CALL);
+ t = message_new(bus, SD_BUS_MESSAGE_METHOD_CALL);
if (!t)
return -ENOMEM;
}
static int message_new_reply(
- sd_bus *bus,
sd_bus_message *call,
uint8_t type,
sd_bus_message **m) {
sd_bus_message *t;
int r;
- if (!call)
- return -EINVAL;
- if (!call->sealed)
- return -EPERM;
- if (call->header->type != SD_BUS_MESSAGE_TYPE_METHOD_CALL)
- return -EINVAL;
- if (!m)
- return -EINVAL;
- if (bus && bus->state == BUS_UNSET)
- return -ENOTCONN;
+ assert_return(call, -EINVAL);
+ assert_return(call->sealed, -EPERM);
+ assert_return(call->header->type == SD_BUS_MESSAGE_METHOD_CALL, -EINVAL);
+ assert_return(!call->bus || call->bus->state != BUS_UNSET, -ENOTCONN);
+ assert_return(m, -EINVAL);
- t = message_new(bus, type);
+ t = message_new(call->bus, type);
if (!t)
return -ENOMEM;
goto fail;
if (call->sender) {
- r = message_append_field_string(t, SD_BUS_MESSAGE_HEADER_DESTINATION, SD_BUS_TYPE_STRING, call->sender, &t->sender);
+ r = message_append_field_string(t, SD_BUS_MESSAGE_HEADER_DESTINATION, SD_BUS_TYPE_STRING, call->sender, &t->destination);
if (r < 0)
goto fail;
}
return r;
}
-int sd_bus_message_new_method_return(
- sd_bus *bus,
+_public_ int sd_bus_message_new_method_return(
sd_bus_message *call,
sd_bus_message **m) {
- return message_new_reply(bus, call, SD_BUS_MESSAGE_TYPE_METHOD_RETURN, m);
+ return message_new_reply(call, SD_BUS_MESSAGE_METHOD_RETURN, m);
}
-int sd_bus_message_new_method_error(
- sd_bus *bus,
+_public_ int sd_bus_message_new_method_error(
sd_bus_message *call,
const sd_bus_error *e,
sd_bus_message **m) {
sd_bus_message *t;
int r;
- if (!sd_bus_error_is_set(e))
- return -EINVAL;
- if (!m)
- return -EINVAL;
+ assert_return(sd_bus_error_is_set(e), -EINVAL);
+ assert_return(m, -EINVAL);
- r = message_new_reply(bus, call, SD_BUS_MESSAGE_TYPE_METHOD_ERROR, &t);
+ r = message_new_reply(call, SD_BUS_MESSAGE_METHOD_ERROR, &t);
if (r < 0)
return r;
return r;
}
-sd_bus_message* sd_bus_message_ref(sd_bus_message *m) {
- if (!m)
- return NULL;
-
- assert(m->n_ref > 0);
- m->n_ref++;
-
- return m;
-}
-
-sd_bus_message* sd_bus_message_unref(sd_bus_message *m) {
- if (!m)
- return NULL;
-
- assert(m->n_ref > 0);
- m->n_ref--;
+_public_ int sd_bus_message_new_method_errorf(
+ sd_bus_message *call,
+ sd_bus_message **m,
+ const char *name,
+ const char *format,
+ ...) {
- if (m->n_ref <= 0)
- message_free(m);
+ _cleanup_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
+ va_list ap;
- return NULL;
-}
+ assert_return(name, -EINVAL);
+ assert_return(m, -EINVAL);
-int sd_bus_message_get_type(sd_bus_message *m, uint8_t *type) {
- if (!m)
- return -EINVAL;
- if (!type)
- return -EINVAL;
+ va_start(ap, format);
+ bus_error_setfv(&error, name, format, ap);
+ va_end(ap);
- *type = m->header->type;
- return 0;
+ return sd_bus_message_new_method_error(call, &error, m);
}
-int sd_bus_message_get_serial(sd_bus_message *m, uint64_t *serial) {
- if (!m)
- return -EINVAL;
- if (!serial)
- return -EINVAL;
- if (m->header->serial == 0)
- return -ENOENT;
-
- *serial = BUS_MESSAGE_SERIAL(m);
- return 0;
-}
+_public_ int sd_bus_message_new_method_errno(
+ sd_bus_message *call,
+ int error,
+ const sd_bus_error *p,
+ sd_bus_message **m) {
-int sd_bus_message_get_reply_serial(sd_bus_message *m, uint64_t *serial) {
- if (!m)
- return -EINVAL;
- if (!serial)
- return -EINVAL;
- if (m->reply_serial == 0)
- return -ENOENT;
+ _cleanup_free_ sd_bus_error berror = SD_BUS_ERROR_NULL;
- *serial = m->reply_serial;
- return 0;
-}
+ if (sd_bus_error_is_set(p))
+ return sd_bus_message_new_method_error(call, p, m);
-int sd_bus_message_get_no_reply(sd_bus_message *m) {
- if (!m)
- return -EINVAL;
+ sd_bus_error_set_errno(&berror, error);
- return m->header->type == SD_BUS_MESSAGE_TYPE_METHOD_CALL ? !!(m->header->flags & SD_BUS_MESSAGE_NO_REPLY_EXPECTED) : 0;
+ return sd_bus_message_new_method_error(call, &berror, m);
}
-const char *sd_bus_message_get_path(sd_bus_message *m) {
- if (!m)
- return NULL;
+_public_ int sd_bus_message_new_method_errnof(
+ sd_bus_message *call,
+ sd_bus_message **m,
+ int error,
+ const char *format,
+ ...) {
- return m->path;
-}
+ _cleanup_free_ sd_bus_error berror = SD_BUS_ERROR_NULL;
+ va_list ap;
-const char *sd_bus_message_get_interface(sd_bus_message *m) {
- if (!m)
- return NULL;
+ va_start(ap, format);
+ bus_error_set_errnofv(&berror, error, format, ap);
+ va_end(ap);
- return m->interface;
+ return sd_bus_message_new_method_error(call, &berror, m);
}
-const char *sd_bus_message_get_member(sd_bus_message *m) {
- if (!m)
- return NULL;
+int bus_message_new_synthetic_error(
+ sd_bus *bus,
+ uint64_t serial,
+ const sd_bus_error *e,
+ sd_bus_message **m) {
- return m->member;
-}
-const char *sd_bus_message_get_destination(sd_bus_message *m) {
- if (!m)
- return NULL;
+ sd_bus_message *t;
+ int r;
- return m->destination;
-}
+ assert(sd_bus_error_is_set(e));
+ assert(m);
-const char *sd_bus_message_get_sender(sd_bus_message *m) {
- if (!m)
- return NULL;
+ t = message_new(bus, SD_BUS_MESSAGE_METHOD_ERROR);
+ if (!t)
+ return -ENOMEM;
- return m->sender;
-}
+ t->header->flags |= SD_BUS_MESSAGE_NO_REPLY_EXPECTED;
+ t->reply_serial = serial;
-const sd_bus_error *sd_bus_message_get_error(sd_bus_message *m) {
- if (!m)
- return NULL;
+ r = message_append_field_uint32(t, SD_BUS_MESSAGE_HEADER_REPLY_SERIAL, t->reply_serial);
+ if (r < 0)
+ goto fail;
- if (!sd_bus_error_is_set(&m->error))
- return NULL;
+ if (bus && bus->unique_name) {
+ r = message_append_field_string(t, SD_BUS_MESSAGE_HEADER_DESTINATION, SD_BUS_TYPE_STRING, bus->unique_name, &t->destination);
+ if (r < 0)
+ goto fail;
+ }
- return &m->error;
-}
+ r = message_append_field_string(t, SD_BUS_MESSAGE_HEADER_ERROR_NAME, SD_BUS_TYPE_STRING, e->name, &t->error.name);
+ if (r < 0)
+ goto fail;
-int sd_bus_message_get_uid(sd_bus_message *m, uid_t *uid) {
- if (!m)
- return -EINVAL;
- if (!uid)
- return -EINVAL;
- if (!m->uid_valid)
- return -ESRCH;
+ if (e->message) {
+ r = message_append_basic(t, SD_BUS_TYPE_STRING, e->message, (const void**) &t->error.message);
+ if (r < 0)
+ goto fail;
+ }
- *uid = m->uid;
+ *m = t;
return 0;
-}
-int sd_bus_message_get_gid(sd_bus_message *m, gid_t *gid) {
- if (!m)
- return -EINVAL;
- if (!gid)
- return -EINVAL;
- if (!m->gid_valid)
- return -ESRCH;
-
- *gid = m->gid;
- return 0;
+fail:
+ message_free(t);
+ return r;
}
-int sd_bus_message_get_pid(sd_bus_message *m, pid_t *pid) {
- if (!m)
- return -EINVAL;
- if (!pid)
- return -EINVAL;
- if (m->pid <= 0)
- return -ESRCH;
+_public_ sd_bus_message* sd_bus_message_ref(sd_bus_message *m) {
+ assert_return(m, NULL);
- *pid = m->pid;
- return 0;
-}
-
-int sd_bus_message_get_tid(sd_bus_message *m, pid_t *tid) {
- if (!m)
- return -EINVAL;
- if (!tid)
- return -EINVAL;
- if (m->tid <= 0)
- return -ESRCH;
+ assert(m->n_ref > 0);
+ m->n_ref++;
- *tid = m->tid;
- return 0;
+ return m;
}
-int sd_bus_message_get_pid_starttime(sd_bus_message *m, uint64_t *usec) {
- if (!m)
- return -EINVAL;
- if (!usec)
- return -EINVAL;
- if (m->pid_starttime <= 0)
- return -ESRCH;
+_public_ sd_bus_message* sd_bus_message_unref(sd_bus_message *m) {
+ assert_return(m, NULL);
- *usec = m->pid_starttime;
- return 0;
-}
+ assert(m->n_ref > 0);
+ m->n_ref--;
-int sd_bus_message_get_selinux_context(sd_bus_message *m, const char **ret) {
- if (!m)
- return -EINVAL;
- if (!m->label)
- return -ESRCH;
+ if (m->n_ref <= 0)
+ message_free(m);
- *ret = m->label;
- return 0;
+ return NULL;
}
-int sd_bus_message_get_monotonic_timestamp(sd_bus_message *m, uint64_t *usec) {
- if (!m)
- return -EINVAL;
- if (!usec)
- return -EINVAL;
- if (m->monotonic <= 0)
- return -ESRCH;
+_public_ int sd_bus_message_get_type(sd_bus_message *m, uint8_t *type) {
+ assert_return(m, -EINVAL);
+ assert_return(type, -EINVAL);
- *usec = m->monotonic;
+ *type = m->header->type;
return 0;
}
-int sd_bus_message_get_realtime_timestamp(sd_bus_message *m, uint64_t *usec) {
- if (!m)
- return -EINVAL;
- if (!usec)
- return -EINVAL;
- if (m->realtime <= 0)
- return -ESRCH;
+_public_ int sd_bus_message_get_serial(sd_bus_message *m, uint64_t *serial) {
+ assert_return(m, -EINVAL);
+ assert_return(serial, -EINVAL);
+ assert_return(m->header->serial != 0, -ENOENT);
- *usec = m->realtime;
+ *serial = BUS_MESSAGE_SERIAL(m);
return 0;
}
-int sd_bus_message_get_comm(sd_bus_message *m, const char **ret) {
- if (!m)
- return -EINVAL;
- if (!ret)
- return -EINVAL;
- if (!m->comm)
- return -ESRCH;
+_public_ int sd_bus_message_get_reply_serial(sd_bus_message *m, uint64_t *serial) {
+ assert_return(m, -EINVAL);
+ assert_return(serial, -EINVAL);
+ assert_return(m->reply_serial != 0, -ENOENT);
- *ret = m->comm;
+ *serial = m->reply_serial;
return 0;
}
-int sd_bus_message_get_tid_comm(sd_bus_message *m, const char **ret) {
- if (!m)
- return -EINVAL;
- if (!ret)
- return -EINVAL;
- if (!m->tid_comm)
- return -ESRCH;
+_public_ int sd_bus_message_get_no_reply(sd_bus_message *m) {
+ assert_return(m, -EINVAL);
- *ret = m->tid_comm;
- return 0;
+ return m->header->type == SD_BUS_MESSAGE_METHOD_CALL ? !!(m->header->flags & SD_BUS_MESSAGE_NO_REPLY_EXPECTED) : 0;
}
-int sd_bus_message_get_exe(sd_bus_message *m, const char **ret) {
- if (!m)
- return -EINVAL;
- if (!ret)
- return -EINVAL;
- if (!m->exe)
- return -ESRCH;
+_public_ int sd_bus_message_get_no_auto_start(sd_bus_message *m) {
+ assert_return(m, -EINVAL);
- *ret = m->exe;
- return 0;
+ return !!(m->header->flags & SD_BUS_MESSAGE_NO_AUTO_START);
}
-int sd_bus_message_get_cgroup(sd_bus_message *m, const char **ret) {
- if (!m)
- return -EINVAL;
- if (!ret)
- return -EINVAL;
- if (!m->cgroup)
- return -ESRCH;
+_public_ const char *sd_bus_message_get_path(sd_bus_message *m) {
+ assert_return(m, NULL);
- *ret = m->cgroup;
- return 0;
+ return m->path;
}
-int sd_bus_message_get_unit(sd_bus_message *m, const char **ret) {
- int r;
-
- if (!m)
- return -EINVAL;
- if (!ret)
- return -EINVAL;
- if (!m->cgroup)
- return -ESRCH;
+_public_ const char *sd_bus_message_get_interface(sd_bus_message *m) {
+ assert_return(m, NULL);
- if (!m->unit) {
- r = cg_path_get_unit(m->cgroup, &m->unit);
- if (r < 0)
- return r;
- }
-
- *ret = m->unit;
- return 0;
+ return m->interface;
}
-int sd_bus_message_get_user_unit(sd_bus_message *m, const char **ret) {
- int r;
-
- if (!m)
- return -EINVAL;
- if (!ret)
- return -EINVAL;
- if (!m->cgroup)
- return -ESRCH;
-
- if (!m->user_unit) {
- r = cg_path_get_user_unit(m->cgroup, &m->user_unit);
- if (r < 0)
- return r;
- }
+_public_ const char *sd_bus_message_get_member(sd_bus_message *m) {
+ assert_return(m, NULL);
- *ret = m->user_unit;
- return 0;
+ return m->member;
}
-int sd_bus_message_get_session(sd_bus_message *m, const char **ret) {
- int r;
+_public_ const char *sd_bus_message_get_destination(sd_bus_message *m) {
+ assert_return(m, NULL);
- if (!m)
- return -EINVAL;
- if (!ret)
- return -EINVAL;
- if (!m->cgroup)
- return -ESRCH;
-
- if (!m->session) {
- r = cg_path_get_session(m->cgroup, &m->session);
- if (r < 0)
- return r;
- }
-
- *ret = m->session;
- return 0;
+ return m->destination;
}
-int sd_bus_message_get_owner_uid(sd_bus_message *m, uid_t *uid) {
- if (!m)
- return -EINVAL;
- if (!uid)
- return -EINVAL;
- if (!m->cgroup)
- return -ESRCH;
+_public_ const char *sd_bus_message_get_sender(sd_bus_message *m) {
+ assert_return(m, NULL);
- return cg_path_get_owner_uid(m->cgroup, uid);
+ return m->sender;
}
-int sd_bus_message_get_cmdline(sd_bus_message *m, char ***cmdline) {
- size_t n, i;
- const char *p;
- bool first;
-
- if (!m)
- return -EINVAL;
-
- if (!m->cmdline)
- return -ENOENT;
-
- for (p = m->cmdline, n = 0; p < m->cmdline + m->cmdline_length; p++)
- if (*p == 0)
- n++;
-
- m->cmdline_array = new(char*, n + 1);
- if (!m->cmdline_array)
- return -ENOMEM;
+_public_ const sd_bus_error *sd_bus_message_get_error(sd_bus_message *m) {
+ assert_return(m, NULL);
+ assert_return(sd_bus_error_is_set(&m->error), NULL);
- for (p = m->cmdline, i = 0, first = true; p < m->cmdline + m->cmdline_length; p++) {
- if (first)
- m->cmdline_array[i++] = (char*) p;
-
- first = *p == 0;
- }
-
- m->cmdline_array[i] = NULL;
- *cmdline = m->cmdline_array;
-
- return 0;
+ return &m->error;
}
-int sd_bus_message_get_audit_sessionid(sd_bus_message *m, uint32_t *sessionid) {
- if (!m)
- return -EINVAL;
- if (!sessionid)
- return -EINVAL;
- if (!m->audit)
- return -ESRCH;
+_public_ int sd_bus_message_get_monotonic_timestamp(sd_bus_message *m, uint64_t *usec) {
+ assert_return(m, -EINVAL);
+ assert_return(usec, -EINVAL);
+ assert_return(m->monotonic > 0, -ENODATA);
- *sessionid = m->audit->sessionid;
+ *usec = m->monotonic;
return 0;
}
-int sd_bus_message_get_audit_loginuid(sd_bus_message *m, uid_t *uid) {
- if (!m)
- return -EINVAL;
- if (!uid)
- return -EINVAL;
- if (!m->audit)
- return -ESRCH;
+_public_ int sd_bus_message_get_realtime_timestamp(sd_bus_message *m, uint64_t *usec) {
+ assert_return(m, -EINVAL);
+ assert_return(usec, -EINVAL);
+ assert_return(m->realtime > 0, -ENODATA);
- *uid = m->audit->loginuid;
+ *usec = m->realtime;
return 0;
}
-int sd_bus_message_has_effective_cap(sd_bus_message *m, int capability) {
- unsigned sz;
+_public_ sd_bus_creds *sd_bus_message_get_creds(sd_bus_message *m) {
+ assert_return(m, NULL);
- if (!m)
- return -EINVAL;
- if (capability < 0)
- return -EINVAL;
- if (!m->capability)
- return -ESRCH;
-
- sz = m->capability_size / 4;
- if ((unsigned) capability >= sz*8)
- return 0;
+ if (m->creds.mask == 0)
+ return NULL;
- return !!(m->capability[2 * sz + (capability / 8)] & (1 << (capability % 8)));
+ return &m->creds;
}
-int sd_bus_message_is_signal(sd_bus_message *m, const char *interface, const char *member) {
- if (!m)
- return -EINVAL;
+_public_ int sd_bus_message_is_signal(sd_bus_message *m,
+ const char *interface,
+ const char *member) {
+ assert_return(m, -EINVAL);
- if (m->header->type != SD_BUS_MESSAGE_TYPE_SIGNAL)
+ if (m->header->type != SD_BUS_MESSAGE_SIGNAL)
return 0;
if (interface && (!m->interface || !streq(m->interface, interface)))
return 1;
}
-int sd_bus_message_is_method_call(sd_bus_message *m, const char *interface, const char *member) {
- if (!m)
- return -EINVAL;
+_public_ int sd_bus_message_is_method_call(sd_bus_message *m,
+ const char *interface,
+ const char *member) {
+ assert_return(m, -EINVAL);
- if (m->header->type != SD_BUS_MESSAGE_TYPE_METHOD_CALL)
+ if (m->header->type != SD_BUS_MESSAGE_METHOD_CALL)
return 0;
if (interface && (!m->interface || !streq(m->interface, interface)))
return 1;
}
-int sd_bus_message_is_method_error(sd_bus_message *m, const char *name) {
- if (!m)
- return -EINVAL;
+_public_ int sd_bus_message_is_method_error(sd_bus_message *m, const char *name) {
+ assert_return(m, -EINVAL);
- if (m->header->type != SD_BUS_MESSAGE_TYPE_METHOD_ERROR)
+ if (m->header->type != SD_BUS_MESSAGE_METHOD_ERROR)
return 0;
if (name && (!m->error.name || !streq(m->error.name, name)))
return 1;
}
-int sd_bus_message_set_no_reply(sd_bus_message *m, int b) {
- if (!m)
- return -EINVAL;
- if (m->sealed)
- return -EPERM;
- if (m->header->type != SD_BUS_MESSAGE_TYPE_METHOD_CALL)
- return -EPERM;
+_public_ int sd_bus_message_set_no_reply(sd_bus_message *m, int b) {
+ assert_return(m, -EINVAL);
+ assert_return(!m->sealed, -EPERM);
+ assert_return(m->header->type == SD_BUS_MESSAGE_METHOD_CALL, -EPERM);
if (b)
m->header->flags |= SD_BUS_MESSAGE_NO_REPLY_EXPECTED;
return 0;
}
+_public_ int sd_bus_message_set_no_auto_start(sd_bus_message *m, int b) {
+ assert_return(m, -EINVAL);
+ assert_return(!m->sealed, -EPERM);
+
+ if (b)
+ m->header->flags |= SD_BUS_MESSAGE_NO_AUTO_START;
+ else
+ m->header->flags &= ~SD_BUS_MESSAGE_NO_AUTO_START;
+
+ return 0;
+}
+
static struct bus_container *message_get_container(sd_bus_message *m) {
assert(m);
assert(sz > 0);
assert(sz < 8);
- part->data = NULL;
+ /* All other fields can be left in their defaults */
+ assert(!part->data);
+ assert(part->memfd < 0);
+
part->size = sz;
+ part->is_zero = true;
+ part->sealed = true;
}
static int part_make_space(
return -errno;
}
- if (sz > part->mapped) {
- size_t psz = PAGE_ALIGN(sz);
+ if (!part->data || sz > part->mapped) {
+ size_t psz = PAGE_ALIGN(sz > 0 ? sz : 1);
if (part->mapped <= 0)
n = mmap(NULL, psz, PROT_READ|PROT_WRITE, MAP_SHARED, part->memfd, 0);
part->mapped = psz;
part->data = n;
}
+
+ part->munmap_this = true;
} else {
- n = realloc(part->data, sz);
+ n = realloc(part->data, MAX(sz, 1u));
if (!n) {
m->poisoned = true;
return -ENOMEM;
return 0;
}
-static void *message_extend_body(sd_bus_message *m, size_t align, size_t sz) {
+static void message_extend_containers(sd_bus_message *m, size_t expand) {
struct bus_container *c;
+
+ assert(m);
+
+ if (expand <= 0)
+ return;
+
+ /* Update counters */
+ for (c = m->containers; c < m->containers + m->n_containers; c++)
+ if (c->array_size)
+ *c->array_size += expand;
+}
+
+static void *message_extend_body(sd_bus_message *m, size_t align, size_t sz) {
struct bus_body_part *part = NULL;
size_t start_body, end_body, padding, start_part, end_part, added;
bool add_new_part;
if (r < 0)
return NULL;
} else {
+ struct bus_container *c;
void *op;
size_t os;
m->error.message = (const char*) adjust_pointer(m->error.message, op, os, part->data);
}
- /* Update counters */
- for (c = m->containers; c < m->containers + m->n_containers; c++)
- if (c->array_size)
- *c->array_size += added;
-
m->header->body_size = end_body;
+ message_extend_containers(m, added);
return p;
}
ssize_t align, sz;
uint32_t k;
void *a;
- char *e = NULL;
int fd = -1;
uint32_t fdi = 0;
int r;
- if (!m)
- return -EINVAL;
- if (!p)
- return -EINVAL;
- if (m->sealed)
- return -EPERM;
- if (!bus_type_is_basic(type))
- return -EINVAL;
- if (m->poisoned)
- return -ESTALE;
+ assert_return(m, -EINVAL);
+ assert_return(!m->sealed, -EPERM);
+ assert_return(bus_type_is_basic(type), -EINVAL);
+ assert_return(!m->poisoned, -ESTALE);
c = message_get_container(m);
if (c->signature[c->index] != type)
return -ENXIO;
} else {
+ char *e;
+
/* Maybe we can append to the signature? But only if this is the top-level container*/
if (c->enclosing != 0)
return -ENXIO;
switch (type) {
case SD_BUS_TYPE_STRING:
+ /* To make things easy we'll serialize a NULL string
+ * into the empty string */
+ p = strempty(p);
+
+ /* Fall through... */
case SD_BUS_TYPE_OBJECT_PATH:
+ if (!p) {
+ r = -EINVAL;
+ goto fail;
+ }
+
align = 4;
sz = 4 + strlen(p) + 1;
break;
case SD_BUS_TYPE_SIGNATURE:
+ if (!p) {
+ r = -EINVAL;
+ goto fail;
+ }
+
align = 1;
sz = 1 + strlen(p) + 1;
break;
case SD_BUS_TYPE_BOOLEAN:
+
+ if (!p) {
+ r = -EINVAL;
+ goto fail;
+ }
+
align = sz = 4;
assert_cc(sizeof(int) == sizeof(uint32_t));
case SD_BUS_TYPE_UNIX_FD: {
int z, *f;
+ if (!p) {
+ r = -EINVAL;
+ goto fail;
+ }
+
if (!m->allow_fds) {
r = -ENOTSUP;
goto fail;
}
default:
+ if (!p) {
+ r = -EINVAL;
+ goto fail;
+ }
+
align = bus_type_get_alignment(type);
sz = bus_type_get_size(type);
break;
return r;
}
-int sd_bus_message_append_basic(sd_bus_message *m, char type, const void *p) {
+_public_ int sd_bus_message_append_basic(sd_bus_message *m, char type, const void *p) {
return message_append_basic(m, type, p, NULL);
}
-int sd_bus_message_append_string_space(sd_bus_message *m, size_t size, char **s) {
+_public_ int sd_bus_message_append_string_space(
+ sd_bus_message *m,
+ size_t size,
+ char **s) {
+
struct bus_container *c;
- char *e;
void *a;
- if (!m)
- return -EINVAL;
- if (!s)
- return -EINVAL;
- if (m->sealed)
- return -EPERM;
- if (m->poisoned)
- return -ESTALE;
+ assert_return(m, -EINVAL);
+ assert_return(s, -EINVAL);
+ assert_return(!m->sealed, -EPERM);
+ assert_return(!m->poisoned, -ESTALE);
c = message_get_container(m);
if (c->signature[c->index] != SD_BUS_TYPE_STRING)
return -ENXIO;
} else {
+ char *e;
+
/* Maybe we can append to the signature? But only if this is the top-level container*/
if (c->enclosing != 0)
return -ENXIO;
}
}
-
a = message_extend_body(m, 4, 4 + size + 1);
if (!a)
return -ENOMEM;
return 0;
}
+_public_ int sd_bus_message_append_string_iovec(
+ sd_bus_message *m,
+ const struct iovec *iov,
+ unsigned n) {
+
+ size_t size;
+ unsigned i;
+ char *p;
+ int r;
+
+ assert_return(m, -EINVAL);
+ assert_return(!m->sealed, -EPERM);
+ assert_return(iov || n == 0, -EINVAL);
+ assert_return(!m->poisoned, -ESTALE);
+
+ size = IOVEC_TOTAL_SIZE(iov, n);
+
+ r = sd_bus_message_append_string_space(m, size, &p);
+ if (r < 0)
+ return r;
+
+ for (i = 0; i < n; i++) {
+
+ if (iov[i].iov_base)
+ memcpy(p, iov[i].iov_base, iov[i].iov_len);
+ else
+ memset(p, ' ', iov[i].iov_len);
+
+ p += iov[i].iov_len;
+ }
+
+ return 0;
+}
+
static int bus_message_open_array(
sd_bus_message *m,
struct bus_container *c,
uint32_t **array_size) {
unsigned nindex;
- char *e = NULL;
void *a, *op;
int alignment;
size_t os;
assert(contents);
assert(array_size);
- if (!signature_is_single(contents))
+ if (!signature_is_single(contents, true))
return -EINVAL;
alignment = bus_type_get_alignment(contents[0]);
nindex = c->index + 1 + strlen(contents);
} else {
+ char *e;
+
if (c->enclosing != 0)
return -ENXIO;
struct bus_container *c,
const char *contents) {
- char *e = NULL;
size_t l;
void *a;
assert(c);
assert(contents);
- if (!signature_is_single(contents))
+ if (!signature_is_single(contents, false))
return -EINVAL;
if (*contents == SD_BUS_TYPE_DICT_ENTRY_BEGIN)
return -ENXIO;
} else {
+ char *e;
+
if (c->enclosing != 0)
return -ENXIO;
const char *contents) {
size_t nindex;
- char *e = NULL;
assert(m);
assert(c);
nindex = c->index + 1 + l + 1;
} else {
+ char *e;
+
if (c->enclosing != 0)
return -ENXIO;
return 0;
}
-int sd_bus_message_open_container(
+_public_ int sd_bus_message_open_container(
sd_bus_message *m,
char type,
const char *contents) {
size_t before;
int r;
- if (!m)
- return -EINVAL;
- if (m->sealed)
- return -EPERM;
- if (!contents)
- return -EINVAL;
- if (m->poisoned)
- return -ESTALE;
+ assert_return(m, -EINVAL);
+ assert_return(!m->sealed, -EPERM);
+ assert_return(contents, -EINVAL);
+ assert_return(!m->poisoned, -ESTALE);
/* Make sure we have space for one more container */
w = realloc(m->containers, sizeof(struct bus_container) * (m->n_containers + 1));
return 0;
}
-int sd_bus_message_close_container(sd_bus_message *m) {
+_public_ int sd_bus_message_close_container(sd_bus_message *m) {
struct bus_container *c;
- if (!m)
- return -EINVAL;
- if (m->sealed)
- return -EPERM;
- if (m->n_containers <= 0)
- return -EINVAL;
- if (m->poisoned)
- return -ESTALE;
+ assert_return(m, -EINVAL);
+ assert_return(!m->sealed, -EPERM);
+ assert_return(m->n_containers > 0, -EINVAL);
+ assert_return(!m->poisoned, -ESTALE);
c = message_get_container(m);
if (c->enclosing != SD_BUS_TYPE_ARRAY)
n_struct = k - 2;
n_array = (unsigned) -1;
- break;
- }
+ break;
+ }
+
+ default:
+ r = -EINVAL;
+ }
+
+ if (r < 0)
+ return r;
+ }
+
+ return 1;
+}
+
+_public_ int sd_bus_message_append(sd_bus_message *m, const char *types, ...) {
+ va_list ap;
+ int r;
+
+ assert_return(m, -EINVAL);
+ assert_return(types, -EINVAL);
+ assert_return(!m->sealed, -EPERM);
+ assert_return(!m->poisoned, -ESTALE);
+
+ va_start(ap, types);
+ r = bus_message_append_ap(m, types, ap);
+ va_end(ap);
+
+ return r;
+}
+
+_public_ int sd_bus_message_append_array_space(sd_bus_message *m,
+ char type,
+ size_t size,
+ void **ptr) {
+ ssize_t align, sz;
+ void *a;
+ int r;
+
+ assert_return(m, -EINVAL);
+ assert_return(!m->sealed, -EPERM);
+ assert_return(bus_type_is_trivial(type), -EINVAL);
+ assert_return(ptr || size == 0, -EINVAL);
+ assert_return(!m->poisoned, -ESTALE);
+
+ align = bus_type_get_alignment(type);
+ sz = bus_type_get_size(type);
+
+ assert_se(align > 0);
+ assert_se(sz > 0);
+
+ if (size % sz != 0)
+ return -EINVAL;
+
+ r = sd_bus_message_open_container(m, SD_BUS_TYPE_ARRAY, CHAR_TO_STR(type));
+ if (r < 0)
+ return r;
+
+ a = message_extend_body(m, align, size);
+ if (!a)
+ return -ENOMEM;
+
+ r = sd_bus_message_close_container(m);
+ if (r < 0)
+ return r;
+
+ *ptr = a;
+ return 0;
+}
+
+_public_ int sd_bus_message_append_array(sd_bus_message *m,
+ char type,
+ const void *ptr,
+ size_t size) {
+ int r;
+ void *p;
+
+ assert_return(m, -EINVAL);
+ assert_return(!m->sealed, -EPERM);
+ assert_return(bus_type_is_trivial(type), -EINVAL);
+ assert_return(ptr || size == 0, -EINVAL);
+ assert_return(!m->poisoned, -ESTALE);
+
+ r = sd_bus_message_append_array_space(m, type, size, &p);
+ if (r < 0)
+ return r;
+
+ if (size > 0)
+ memcpy(p, ptr, size);
+
+ return 0;
+}
+
+_public_ int sd_bus_message_append_array_iovec(
+ sd_bus_message *m,
+ char type,
+ const struct iovec *iov,
+ unsigned n) {
+
+ size_t size;
+ unsigned i;
+ void *p;
+ int r;
+
+ assert_return(m, -EINVAL);
+ assert_return(!m->sealed, -EPERM);
+ assert_return(bus_type_is_trivial(type), -EINVAL);
+ assert_return(iov || n == 0, -EINVAL);
+ assert_return(!m->poisoned, -ESTALE);
+
+ size = IOVEC_TOTAL_SIZE(iov, n);
+
+ r = sd_bus_message_append_array_space(m, type, size, &p);
+ if (r < 0)
+ return r;
+
+ for (i = 0; i < n; i++) {
+
+ if (iov[i].iov_base)
+ memcpy(p, iov[i].iov_base, iov[i].iov_len);
+ else
+ memset(p, 0, iov[i].iov_len);
+
+ p = (uint8_t*) p + iov[i].iov_len;
+ }
+
+ return 0;
+}
+
+_public_ int sd_bus_message_append_array_memfd(sd_bus_message *m,
+ char type,
+ sd_memfd *memfd) {
+ _cleanup_close_ int copy_fd = -1;
+ struct bus_body_part *part;
+ ssize_t align, sz;
+ uint64_t size;
+ void *a;
+ int r;
+
+ if (!m)
+ return -EINVAL;
+ if (!memfd)
+ return -EINVAL;
+ if (m->sealed)
+ return -EPERM;
+ if (!bus_type_is_trivial(type))
+ return -EINVAL;
+ if (m->poisoned)
+ return -ESTALE;
+
+ r = sd_memfd_set_sealed(memfd, true);
+ if (r < 0)
+ return r;
+
+ copy_fd = sd_memfd_dup_fd(memfd);
+ if (copy_fd < 0)
+ return copy_fd;
+
+ r = sd_memfd_get_size(memfd, &size);
+ if (r < 0)
+ return r;
+
+ align = bus_type_get_alignment(type);
+ sz = bus_type_get_size(type);
+
+ assert_se(align > 0);
+ assert_se(sz > 0);
+
+ if (size % sz != 0)
+ return -EINVAL;
+
+ if (size > (uint64_t) (uint32_t) -1)
+ return -EINVAL;
+
+ r = sd_bus_message_open_container(m, SD_BUS_TYPE_ARRAY, CHAR_TO_STR(type));
+ if (r < 0)
+ return r;
+
+ a = message_extend_body(m, align, 0);
+ if (!a)
+ return -ENOMEM;
+
+ part = message_append_part(m);
+ if (!part)
+ return -ENOMEM;
+
+ part->memfd = copy_fd;
+ part->sealed = true;
+ part->size = size;
+ copy_fd = -1;
+
+ message_extend_containers(m, size);
+ m->header->body_size += size;
+
+ return sd_bus_message_close_container(m);
+}
+
+_public_ int sd_bus_message_append_string_memfd(sd_bus_message *m, sd_memfd *memfd) {
+ _cleanup_close_ int copy_fd = -1;
+ struct bus_body_part *part;
+ struct bus_container *c;
+ uint64_t size;
+ void *a;
+ int r;
+
+ assert_return(m, -EINVAL);
+ assert_return(memfd, -EINVAL);
+ assert_return(!m->sealed, -EPERM);
+ assert_return(!m->poisoned, -ESTALE);
+
+ r = sd_memfd_set_sealed(memfd, true);
+ if (r < 0)
+ return r;
+
+ copy_fd = sd_memfd_dup_fd(memfd);
+ if (copy_fd < 0)
+ return copy_fd;
+
+ r = sd_memfd_get_size(memfd, &size);
+ if (r < 0)
+ return r;
+
+ /* We require this to be NUL terminated */
+ if (size == 0)
+ return -EINVAL;
+
+ if (size > (uint64_t) (uint32_t) -1)
+ return -EINVAL;
+
+ c = message_get_container(m);
+ if (c->signature && c->signature[c->index]) {
+ /* Container signature is already set */
+
+ if (c->signature[c->index] != SD_BUS_TYPE_STRING)
+ return -ENXIO;
+ } else {
+ char *e;
+
+ /* Maybe we can append to the signature? But only if this is the top-level container*/
+ if (c->enclosing != 0)
+ return -ENXIO;
+
+ e = strextend(&c->signature, CHAR_TO_STR(SD_BUS_TYPE_STRING), NULL);
+ if (!e) {
+ m->poisoned = true;
+ return -ENOMEM;
+ }
+ }
+
+ a = message_extend_body(m, 4, 4);
+ if (!a)
+ return -ENOMEM;
+
+ *(uint32_t*) a = size - 1;
+
+ part = message_append_part(m);
+ if (!part)
+ return -ENOMEM;
+
+ part->memfd = copy_fd;
+ part->sealed = true;
+ part->size = size;
+ copy_fd = -1;
+
+ message_extend_containers(m, size);
+ m->header->body_size += size;
+
+ if (c->enclosing != SD_BUS_TYPE_ARRAY)
+ c->index++;
+
+ return 0;
+}
+
+_public_ int sd_bus_message_append_strv(sd_bus_message *m, char **l) {
+ char **i;
+ int r;
- default:
- r = -EINVAL;
- }
+ assert_return(m, -EINVAL);
+ assert_return(!m->sealed, -EPERM);
+ assert_return(!m->poisoned, -ESTALE);
+
+ r = sd_bus_message_open_container(m, 'a', "s");
+ if (r < 0)
+ return r;
+ STRV_FOREACH(i, l) {
+ r = sd_bus_message_append_basic(m, 's', *i);
if (r < 0)
return r;
}
- return 0;
+ return sd_bus_message_close_container(m);
}
-int sd_bus_message_append(sd_bus_message *m, const char *types, ...) {
- va_list ap;
- int r;
+int bus_body_part_map(struct bus_body_part *part) {
+ void *p;
+ size_t psz;
- if (!m)
- return -EINVAL;
- if (m->sealed)
- return -EPERM;
- if (m->poisoned)
- return -ESTALE;
- if (!types)
+ assert_se(part);
+
+ if (part->data)
return 0;
- va_start(ap, types);
- r = bus_message_append_ap(m, types, ap);
- va_end(ap);
+ if (part->size <= 0)
+ return 0;
- return r;
-}
+ /* For smaller zero parts (as used for padding) we don't need to map anything... */
+ if (part->memfd < 0 && part->is_zero && part->size < 8) {
+ static const uint8_t zeroes[7] = { };
+ part->data = (void*) zeroes;
+ return 0;
+ }
-int sd_bus_message_append_array_space(sd_bus_message *m, char type, size_t size, void **ptr) {
- ssize_t align, sz;
- void *a;
- int r;
+ psz = PAGE_ALIGN(part->size);
- if (!m)
- return -EINVAL;
- if (m->sealed)
- return -EPERM;
- if (!bus_type_is_trivial(type))
- return -EINVAL;
- if (!ptr && size > 0)
+ if (part->memfd >= 0)
+ p = mmap(NULL, psz, PROT_READ, MAP_SHARED, part->memfd, 0);
+ else if (part->is_zero)
+ p = mmap(NULL, psz, PROT_READ, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
+ else
return -EINVAL;
- if (m->poisoned)
- return -ESTALE;
-
- align = bus_type_get_alignment(type);
- sz = bus_type_get_size(type);
- assert_se(align > 0);
- assert_se(sz > 0);
+ if (p == MAP_FAILED)
+ return -errno;
- if (size % sz != 0)
- return -EINVAL;
+ part->mapped = psz;
+ part->data = p;
+ part->munmap_this = true;
- r = sd_bus_message_open_container(m, SD_BUS_TYPE_ARRAY, CHAR_TO_STR(type));
- if (r < 0)
- return r;
+ return 0;
+}
- a = message_extend_body(m, align, size);
- if (!a)
- return -ENOMEM;
+void bus_body_part_unmap(struct bus_body_part *part) {
- r = sd_bus_message_close_container(m);
- if (r < 0)
- return r;
+ assert_se(part);
- *ptr = a;
- return 0;
-}
+ if (part->memfd < 0)
+ return;
-int sd_bus_message_append_array(sd_bus_message *m, char type, const void *ptr, size_t size) {
- int r;
- void *p;
+ if (!part->data)
+ return;
- if (!ptr && size > 0)
- return -EINVAL;
+ if (!part->munmap_this)
+ return;
- r = sd_bus_message_append_array_space(m, type, size, &p);
- if (r < 0)
- return r;
+ assert_se(munmap(part->data, part->mapped) == 0);
- if (size > 0)
- memcpy(p, ptr, size);
+ part->data = NULL;
+ part->mapped = 0;
+ part->munmap_this = false;
- return 0;
+ return;
}
static int buffer_peek(const void *p, uint32_t sz, size_t *rindex, size_t align, size_t nbytes, void **r) {
return 1;
}
+static bool message_end_of_signature(sd_bus_message *m) {
+ struct bus_container *c;
+
+ assert(m);
+
+ c = message_get_container(m);
+ return !c->signature || c->signature[c->index] == 0;
+}
+
static bool message_end_of_array(sd_bus_message *m, size_t index) {
struct bus_container *c;
return index >= c->begin + BUS_MESSAGE_BSWAP32(m, *c->array_size);
}
+_public_ int sd_bus_message_at_end(sd_bus_message *m, int complete) {
+ assert_return(m, -EINVAL);
+ assert_return(m->sealed, -EPERM);
+
+ if (complete && m->n_containers > 0)
+ return false;
+
+ if (message_end_of_signature(m))
+ return true;
+
+ if (message_end_of_array(m, m->rindex))
+ return true;
+
+ return false;
+}
+
static struct bus_body_part* find_part(sd_bus_message *m, size_t index, size_t sz, void **p) {
struct bus_body_part *part;
size_t begin;
+ int r;
+
assert(m);
if (m->cached_rindex_part && index >= m->cached_rindex_part_begin) {
return NULL;
if (index + sz <= begin + part->size) {
+
+ r = bus_body_part_map(part);
+ if (r < 0)
+ return NULL;
+
if (p)
- *p = part->data ? (uint8_t*) part->data + index - begin : NULL;
+ *p = (uint8_t*) part->data + index - begin;
m->cached_rindex_part = part;
m->cached_rindex_part_begin = begin;
return part;
}
+ begin += part->size;
part = part->next;
}
return true;
}
-int sd_bus_message_read_basic(sd_bus_message *m, char type, void *p) {
+_public_ int sd_bus_message_read_basic(sd_bus_message *m, char type, void *p) {
struct bus_container *c;
- int r;
void *q;
+ int r;
- if (!m)
- return -EINVAL;
- if (!m->sealed)
- return -EPERM;
- if (!bus_type_is_basic(type))
- return -EINVAL;
- if (!p)
- return -EINVAL;
+ assert_return(m, -EINVAL);
+ assert_return(m->sealed, -EPERM);
+ assert_return(bus_type_is_basic(type), -EINVAL);
- c = message_get_container(m);
+ if (message_end_of_signature(m))
+ return -ENXIO;
- if (!c->signature || c->signature[c->index] == 0)
+ if (message_end_of_array(m, m->rindex))
return 0;
+ c = message_get_container(m);
if (c->signature[c->index] != type)
return -ENXIO;
}
m->rindex = rindex;
- *(const char**) p = q;
+ if (p)
+ *(const char**) p = q;
+
break;
}
return -EBADMSG;
m->rindex = rindex;
- *(const char**) p = q;
+
+ if (p)
+ *(const char**) p = q;
break;
}
switch (type) {
case SD_BUS_TYPE_BYTE:
- *(uint8_t*) p = *(uint8_t*) q;
+ if (p)
+ *(uint8_t*) p = *(uint8_t*) q;
break;
case SD_BUS_TYPE_BOOLEAN:
- *(int*) p = !!*(uint32_t*) q;
+ if (p)
+ *(int*) p = !!*(uint32_t*) q;
break;
case SD_BUS_TYPE_INT16:
case SD_BUS_TYPE_UINT16:
- *(uint16_t*) p = BUS_MESSAGE_BSWAP16(m, *(uint16_t*) q);
+ if (p)
+ *(uint16_t*) p = BUS_MESSAGE_BSWAP16(m, *(uint16_t*) q);
break;
case SD_BUS_TYPE_INT32:
case SD_BUS_TYPE_UINT32:
- *(uint32_t*) p = BUS_MESSAGE_BSWAP32(m, *(uint32_t*) q);
+ if (p)
+ *(uint32_t*) p = BUS_MESSAGE_BSWAP32(m, *(uint32_t*) q);
break;
case SD_BUS_TYPE_INT64:
case SD_BUS_TYPE_UINT64:
case SD_BUS_TYPE_DOUBLE:
- *(uint64_t*) p = BUS_MESSAGE_BSWAP64(m, *(uint64_t*) q);
+ if (p)
+ *(uint64_t*) p = BUS_MESSAGE_BSWAP64(m, *(uint64_t*) q);
break;
case SD_BUS_TYPE_UNIX_FD: {
if (j >= m->n_fds)
return -EBADMSG;
- *(int*) p = m->fds[j];
+ if (p)
+ *(int*) p = m->fds[j];
break;
}
assert(contents);
assert(array_size);
- if (!signature_is_single(contents))
+ if (!signature_is_single(contents, true))
return -EINVAL;
alignment = bus_type_get_alignment(contents[0]);
assert(c);
assert(contents);
- if (!signature_is_single(contents))
+ if (!signature_is_single(contents, false))
return -EINVAL;
if (*contents == SD_BUS_TYPE_DICT_ENTRY_BEGIN)
return 1;
}
-int sd_bus_message_enter_container(sd_bus_message *m, char type, const char *contents) {
+_public_ int sd_bus_message_enter_container(sd_bus_message *m,
+ char type,
+ const char *contents) {
struct bus_container *c, *w;
uint32_t *array_size = NULL;
char *signature;
size_t before;
int r;
- if (!m)
- return -EINVAL;
- if (!m->sealed)
- return -EPERM;
- if (!contents)
- return -EINVAL;
+ assert_return(m, -EINVAL);
+ assert_return(m->sealed, -EPERM);
+ assert_return(type != 0 || !contents, -EINVAL);
+
+ if (type == 0 || !contents) {
+ const char *cc;
+ char tt;
+
+ /* Allow entering into anonymous containers */
+ r = sd_bus_message_peek_type(m, &tt, &cc);
+ if (r <= 0)
+ return r;
+
+ if (type != 0 && type != tt)
+ return -ENXIO;
+
+ if (contents && !streq(contents, cc))
+ return -ENXIO;
+
+ type = tt;
+ contents = cc;
+ }
/*
* We enforce a global limit on container depth, that is much
return -ENOMEM;
m->containers = w;
- c = message_get_container(m);
+ if (message_end_of_signature(m))
+ return -ENXIO;
- if (!c->signature || c->signature[c->index] == 0)
+ if (message_end_of_array(m, m->rindex))
return 0;
+ c = message_get_container(m);
+
signature = strdup(contents);
if (!signature)
return -ENOMEM;
return 1;
}
-int sd_bus_message_exit_container(sd_bus_message *m) {
+_public_ int sd_bus_message_exit_container(sd_bus_message *m) {
struct bus_container *c;
- if (!m)
- return -EINVAL;
- if (!m->sealed)
- return -EPERM;
- if (m->n_containers <= 0)
- return -EINVAL;
+ assert_return(m, -EINVAL);
+ assert_return(m->sealed, -EPERM);
+ assert_return(m->n_containers > 0, -ENXIO);
c = message_get_container(m);
if (c->enclosing == SD_BUS_TYPE_ARRAY) {
} else {
if (c->signature && c->signature[c->index] != 0)
- return -EINVAL;
+ return -EBUSY;
}
free(c->signature);
c->index = c->saved_index;
}
-int sd_bus_message_peek_type(sd_bus_message *m, char *type, const char **contents) {
+_public_ int sd_bus_message_peek_type(sd_bus_message *m, char *type, const char **contents) {
struct bus_container *c;
int r;
- if (!m)
- return -EINVAL;
- if (!m->sealed)
- return -EPERM;
-
- c = message_get_container(m);
+ assert_return(m, -EINVAL);
+ assert_return(m->sealed, -EPERM);
- if (!c->signature || c->signature[c->index] == 0)
+ if (message_end_of_signature(m))
goto eof;
if (message_end_of_array(m, m->rindex))
goto eof;
+ c = message_get_container(m);
+
if (bus_type_is_basic(c->signature[c->index])) {
if (contents)
*contents = NULL;
eof:
if (type)
- *type = c->enclosing;
+ *type = 0;
if (contents)
*contents = NULL;
return 0;
}
-int sd_bus_message_rewind(sd_bus_message *m, int complete) {
+_public_ int sd_bus_message_rewind(sd_bus_message *m, int complete) {
struct bus_container *c;
- if (!m)
- return -EINVAL;
- if (!m->sealed)
- return -EPERM;
+ assert_return(m, -EINVAL);
+ assert_return(m->sealed, -EPERM);
if (complete) {
message_reset_containers(m);
return !isempty(c->signature);
}
+
static int message_read_ap(
sd_bus_message *m,
const char *types,
unsigned n_array, n_struct;
TypeStack stack[BUS_CONTAINER_DEPTH];
unsigned stack_ptr = 0;
+ unsigned n_loop = 0;
int r;
assert(m);
- if (!types)
+ if (isempty(types))
return 0;
/* Ideally, we'd just call ourselves recursively on every
* in a single stackframe. We hence implement our own
* home-grown stack in an array. */
- n_array = (unsigned) -1;
- n_struct = strlen(types);
+ n_array = (unsigned) -1; /* lenght of current array entries */
+ n_struct = strlen(types); /* length of current struct contents signature */
for (;;) {
const char *t;
+ n_loop++;
+
if (n_array == 0 || (n_array == (unsigned) -1 && n_struct == 0)) {
r = type_stack_pop(stack, ELEMENTSOF(stack), &stack_ptr, &types, &n_struct, &n_array);
if (r < 0)
r = sd_bus_message_read_basic(m, *t, p);
if (r < 0)
return r;
- if (r == 0)
+ if (r == 0) {
+ if (n_loop <= 1)
+ return 0;
+
return -ENXIO;
+ }
break;
}
r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, s);
if (r < 0)
return r;
- if (r == 0)
+ if (r == 0) {
+ if (n_loop <= 1)
+ return 0;
+
return -ENXIO;
+ }
}
if (n_array == (unsigned) -1) {
r = sd_bus_message_enter_container(m, SD_BUS_TYPE_VARIANT, s);
if (r < 0)
return r;
- if (r == 0)
+ if (r == 0) {
+ if (n_loop <= 1)
+ return 0;
+
return -ENXIO;
+ }
r = type_stack_push(stack, ELEMENTSOF(stack), &stack_ptr, types, n_struct, n_array);
if (r < 0)
r = sd_bus_message_enter_container(m, *t == SD_BUS_TYPE_STRUCT_BEGIN ? SD_BUS_TYPE_STRUCT : SD_BUS_TYPE_DICT_ENTRY, s);
if (r < 0)
return r;
- if (r == 0)
+ if (r == 0) {
+ if (n_loop <= 1)
+ return 0;
return -ENXIO;
+ }
}
if (n_array == (unsigned) -1) {
break;
}
- default:
- return -EINVAL;
+ default:
+ return -EINVAL;
+ }
+ }
+
+ return 1;
+}
+
+_public_ int sd_bus_message_read(sd_bus_message *m, const char *types, ...) {
+ va_list ap;
+ int r;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->sealed, -EPERM);
+ assert_return(types, -EINVAL);
+
+ va_start(ap, types);
+ r = message_read_ap(m, types, ap);
+ va_end(ap);
+
+ return r;
+}
+
+_public_ int sd_bus_message_skip(sd_bus_message *m, const char *types) {
+ int r;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->sealed, -EPERM);
+ assert_return(types, -EINVAL);
+
+ if (isempty(types))
+ return 0;
+
+ switch (*types) {
+
+ case SD_BUS_TYPE_BYTE:
+ case SD_BUS_TYPE_BOOLEAN:
+ case SD_BUS_TYPE_INT16:
+ case SD_BUS_TYPE_UINT16:
+ case SD_BUS_TYPE_INT32:
+ case SD_BUS_TYPE_UINT32:
+ case SD_BUS_TYPE_INT64:
+ case SD_BUS_TYPE_UINT64:
+ case SD_BUS_TYPE_DOUBLE:
+ case SD_BUS_TYPE_STRING:
+ case SD_BUS_TYPE_OBJECT_PATH:
+ case SD_BUS_TYPE_SIGNATURE:
+ case SD_BUS_TYPE_UNIX_FD:
+
+ r = sd_bus_message_read_basic(m, *types, NULL);
+ if (r <= 0)
+ return r;
+
+ r = sd_bus_message_skip(m, types + 1);
+ if (r < 0)
+ return r;
+
+ return 1;
+
+ case SD_BUS_TYPE_ARRAY: {
+ size_t k;
+
+ r = signature_element_length(types + 1, &k);
+ if (r < 0)
+ return r;
+
+ {
+ char s[k+1];
+ memcpy(s, types+1, k);
+ s[k] = 0;
+
+ r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, s);
+ if (r <= 0)
+ return r;
+
+ for (;;) {
+ r = sd_bus_message_skip(m, s);
+ if (r < 0)
+ return r;
+ if (r == 0)
+ break;
+ }
+
+ r = sd_bus_message_exit_container(m);
+ if (r < 0)
+ return r;
+ }
+
+ r = sd_bus_message_skip(m, types + 1 + k);
+ if (r < 0)
+ return r;
+
+ return 1;
+ }
+
+ case SD_BUS_TYPE_VARIANT: {
+ const char *contents;
+ char x;
+
+ r = sd_bus_message_peek_type(m, &x, &contents);
+ if (r <= 0)
+ return r;
+
+ if (x != SD_BUS_TYPE_VARIANT)
+ return -ENXIO;
+
+ r = sd_bus_message_enter_container(m, SD_BUS_TYPE_VARIANT, contents);
+ if (r <= 0)
+ return r;
+
+ r = sd_bus_message_skip(m, contents);
+ if (r < 0)
+ return r;
+ assert(r != 0);
+
+ r = sd_bus_message_exit_container(m);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_skip(m, types + 1);
+ if (r < 0)
+ return r;
+
+ return 1;
+ }
+
+ case SD_BUS_TYPE_STRUCT_BEGIN:
+ case SD_BUS_TYPE_DICT_ENTRY_BEGIN: {
+ size_t k;
+
+ r = signature_element_length(types, &k);
+ if (r < 0)
+ return r;
+
+ {
+ char s[k-1];
+ memcpy(s, types+1, k-2);
+ s[k-2] = 0;
+
+ r = sd_bus_message_enter_container(m, *types == SD_BUS_TYPE_STRUCT_BEGIN ? SD_BUS_TYPE_STRUCT : SD_BUS_TYPE_DICT_ENTRY, s);
+ if (r <= 0)
+ return r;
+
+ r = sd_bus_message_skip(m, s);
+ if (r < 0)
+ return r;
+ assert(r != 0);
+
+ r = sd_bus_message_exit_container(m);
+ if (r < 0)
+ return r;
}
- }
- return 1;
-}
+ r = sd_bus_message_skip(m, types + k);
+ if (r < 0)
+ return r;
-int sd_bus_message_read(sd_bus_message *m, const char *types, ...) {
- va_list ap;
- int r;
+ return 1;
+ }
- if (!m)
- return -EINVAL;
- if (!m->sealed)
- return -EPERM;
- if (!types)
+ default:
return -EINVAL;
-
- va_start(ap, types);
- r = message_read_ap(m, types, ap);
- va_end(ap);
-
- return r;
+ }
}
-int sd_bus_message_read_array(sd_bus_message *m, char type, const void **ptr, size_t *size) {
+_public_ int sd_bus_message_read_array(sd_bus_message *m,
+ char type,
+ const void **ptr,
+ size_t *size) {
struct bus_container *c;
void *p;
size_t sz;
ssize_t align;
int r;
- if (!m)
- return -EINVAL;
- if (!m->sealed)
- return -EPERM;
- if (!bus_type_is_trivial(type))
- return -EINVAL;
- if (!ptr)
- return -EINVAL;
- if (!size)
- return -EINVAL;
- if (BUS_MESSAGE_NEED_BSWAP(m))
- return -ENOTSUP;
+ assert_return(m, -EINVAL);
+ assert_return(m->sealed, -EPERM);
+ assert_return(bus_type_is_trivial(type), -EINVAL);
+ assert_return(ptr, -EINVAL);
+ assert_return(size, -EINVAL);
+ assert_return(!BUS_MESSAGE_NEED_BSWAP(m), -ENOTSUP);
align = bus_type_get_alignment(type);
if (align < 0)
return align;
r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, CHAR_TO_STR(type));
- if (r < 0)
+ if (r <= 0)
return r;
c = message_get_container(m);
sz = BUS_MESSAGE_BSWAP32(m, *c->array_size);
- r = message_peek_body(m, &m->rindex, align, sz, &p);
- if (r < 0)
- goto fail;
- if (r == 0) {
- r = -EBADMSG;
- goto fail;
+ if (sz == 0)
+ /* Zero length array, let's return some aligned
+ * pointer that is not NULL */
+ p = (uint8_t*) NULL + align;
+ else {
+ r = message_peek_body(m, &m->rindex, align, sz, &p);
+ if (r < 0)
+ goto fail;
+ if (r == 0) {
+ r = -EBADMSG;
+ goto fail;
+ }
}
r = sd_bus_message_exit_container(m);
switch (m->header->type) {
- case SD_BUS_MESSAGE_TYPE_SIGNAL:
+ case SD_BUS_MESSAGE_SIGNAL:
if (!m->path || !m->interface || !m->member)
return -EBADMSG;
break;
- case SD_BUS_MESSAGE_TYPE_METHOD_CALL:
+ case SD_BUS_MESSAGE_METHOD_CALL:
if (!m->path || !m->member)
return -EBADMSG;
break;
- case SD_BUS_MESSAGE_TYPE_METHOD_RETURN:
+ case SD_BUS_MESSAGE_METHOD_RETURN:
if (m->reply_serial == 0)
return -EBADMSG;
break;
- case SD_BUS_MESSAGE_TYPE_METHOD_ERROR:
+ case SD_BUS_MESSAGE_METHOD_ERROR:
if (m->reply_serial == 0 || !m->error.name)
return -EBADMSG;
}
/* Try to read the error message, but if we can't it's a non-issue */
- if (m->header->type == SD_BUS_MESSAGE_TYPE_METHOD_ERROR)
+ if (m->header->type == SD_BUS_MESSAGE_METHOD_ERROR)
sd_bus_message_read(m, "s", &m->error.message);
return 0;
return r;
}
- /* Add padding at the end, since we know the body
- * needs to start at an 8 byte alignment. */
-
+ /* Add padding at the end of the fields part, since we know
+ * the body needs to start at an 8 byte alignment. We made
+ * sure we allocated enough space for this, so all we need to
+ * do here is to zero it out. */
l = BUS_MESSAGE_FIELDS_SIZE(m);
a = ALIGN8(l) - l;
if (a > 0)
memset((uint8_t*) BUS_MESSAGE_FIELDS(m) + l, 0, a);
- MESSAGE_FOREACH_PART(part, i, m)
- if (part->memfd >= 0 && !part->sealed) {
- ioctl(part->memfd, KDBUS_CMD_MEMFD_SEAL_SET, 1);
- part->sealed = true;
- }
+ /* If this is something we can send as memfd, then let's seal
+ the memfd now. Note that we can send memfds as payload only
+ for directed messages, and not for broadcasts. */
+ if (m->destination && m->bus && m->bus->use_memfd) {
+ MESSAGE_FOREACH_PART(part, i, m)
+ if (part->memfd >= 0 && !part->sealed && (part->size > MEMFD_MIN_SIZE || m->bus->use_memfd < 0)) {
+ bus_body_part_unmap(part);
+
+ if (ioctl(part->memfd, KDBUS_CMD_MEMFD_SEAL_SET, 1) >= 0)
+ part->sealed = true;
+ }
+ }
m->header->serial = serial;
m->sealed = true;
return 0;
}
-int sd_bus_message_set_destination(sd_bus_message *m, const char *destination) {
- if (!m)
- return -EINVAL;
- if (!destination)
- return -EINVAL;
- if (m->sealed)
- return -EPERM;
- if (m->destination)
- return -EEXIST;
+_public_ int sd_bus_message_set_destination(sd_bus_message *m, const char *destination) {
+ assert_return(m, -EINVAL);
+ assert_return(destination, -EINVAL);
+ assert_return(!m->sealed, -EPERM);
+ assert_return(!m->destination, -EEXIST);
return message_append_field_string(m, SD_BUS_MESSAGE_HEADER_DESTINATION, SD_BUS_TYPE_STRING, destination, &m->destination);
}
-int bus_message_dump(sd_bus_message *m) {
- const char *u = NULL, *uu = NULL, *s = NULL;
- char **cmdline = NULL;
- unsigned level = 1;
- int r;
- uid_t owner, audit_loginuid;
- uint32_t audit_sessionid;
-
- assert(m);
-
- printf("Message %p\n"
- "\tn_ref=%u\n"
- "\tendian=%c\n"
- "\ttype=%i\n"
- "\tflags=%u\n"
- "\tversion=%u\n"
- "\tserial=%u\n"
- "\tfields_size=%u\n"
- "\tbody_size=%u\n"
- "\tpath=%s\n"
- "\tinterface=%s\n"
- "\tmember=%s\n"
- "\tdestination=%s\n"
- "\tsender=%s\n"
- "\tsignature=%s\n"
- "\treply_serial=%u\n"
- "\terror.name=%s\n"
- "\terror.message=%s\n"
- "\tsealed=%s\n",
- m,
- m->n_ref,
- m->header->endian,
- m->header->type,
- m->header->flags,
- m->header->version,
- BUS_MESSAGE_SERIAL(m),
- BUS_MESSAGE_FIELDS_SIZE(m),
- BUS_MESSAGE_BODY_SIZE(m),
- strna(m->path),
- strna(m->interface),
- strna(m->member),
- strna(m->destination),
- strna(m->sender),
- strna(m->root_container.signature),
- m->reply_serial,
- strna(m->error.name),
- strna(m->error.message),
- yes_no(m->sealed));
-
- if (m->pid != 0)
- printf("\tpid=%lu\n", (unsigned long) m->pid);
- if (m->tid != 0)
- printf("\ttid=%lu\n", (unsigned long) m->tid);
- if (m->uid_valid)
- printf("\tuid=%lu\n", (unsigned long) m->uid);
- if (m->gid_valid)
- printf("\tgid=%lu\n", (unsigned long) m->gid);
- if (m->pid_starttime != 0)
- printf("\tpid_starttime=%llu\n", (unsigned long long) m->pid_starttime);
- if (m->monotonic != 0)
- printf("\tmonotonic=%llu\n", (unsigned long long) m->monotonic);
- if (m->realtime != 0)
- printf("\trealtime=%llu\n", (unsigned long long) m->realtime);
- if (m->exe)
- printf("\texe=[%s]\n", m->exe);
- if (m->comm)
- printf("\tcomm=[%s]\n", m->comm);
- if (m->tid_comm)
- printf("\ttid_comm=[%s]\n", m->tid_comm);
- if (m->label)
- printf("\tlabel=[%s]\n", m->label);
- if (m->cgroup)
- printf("\tcgroup=[%s]\n", m->cgroup);
-
- sd_bus_message_get_unit(m, &u);
- if (u)
- printf("\tunit=[%s]\n", u);
- sd_bus_message_get_user_unit(m, &uu);
- if (uu)
- printf("\tuser_unit=[%s]\n", uu);
- sd_bus_message_get_session(m, &s);
- if (s)
- printf("\tsession=[%s]\n", s);
- if (sd_bus_message_get_owner_uid(m, &owner) >= 0)
- printf("\towner_uid=%lu\n", (unsigned long) owner);
- if (sd_bus_message_get_audit_loginuid(m, &audit_loginuid) >= 0)
- printf("\taudit_loginuid=%lu\n", (unsigned long) audit_loginuid);
- if (sd_bus_message_get_audit_sessionid(m, &audit_sessionid) >= 0)
- printf("\taudit_sessionid=%lu\n", (unsigned long) audit_sessionid);
-
- printf("\tCAP_KILL=%i\n", sd_bus_message_has_effective_cap(m, 5));
-
- if (sd_bus_message_get_cmdline(m, &cmdline) >= 0) {
- char **c;
-
- fputs("\tcmdline=[", stdout);
- STRV_FOREACH(c, cmdline) {
- if (c != cmdline)
- putchar(' ');
-
- fputs(*c, stdout);
- }
-
- fputs("]\n", stdout);
- }
-
- r = sd_bus_message_rewind(m, true);
- if (r < 0) {
- log_error("Failed to rewind: %s", strerror(-r));
- return r;
- }
-
- printf("BEGIN_MESSAGE \"%s\" {\n", strempty(m->root_container.signature));
-
- for(;;) {
- _cleanup_free_ char *prefix = NULL;
- const char *contents = NULL;
- char type;
- union {
- uint8_t u8;
- uint16_t u16;
- int16_t s16;
- uint32_t u32;
- int32_t s32;
- uint64_t u64;
- int64_t s64;
- double d64;
- const char *string;
- int i;
- } basic;
-
- r = sd_bus_message_peek_type(m, &type, &contents);
- if (r < 0) {
- log_error("Failed to peek type: %s", strerror(-r));
- return r;
- }
- if (r == 0) {
- if (level <= 1)
- break;
-
- r = sd_bus_message_exit_container(m);
- if (r < 0) {
- log_error("Failed to exit container: %s", strerror(-r));
- return r;
- }
-
- level--;
-
- prefix = strrep("\t", level);
- if (!prefix)
- return log_oom();
-
- if (type == SD_BUS_TYPE_ARRAY)
- printf("%s} END_ARRAY \n", prefix);
- else if (type == SD_BUS_TYPE_VARIANT)
- printf("%s} END_VARIANT\n", prefix);
- else if (type == SD_BUS_TYPE_STRUCT)
- printf("%s} END_STRUCT\n", prefix);
- else if (type == SD_BUS_TYPE_DICT_ENTRY)
- printf("%s} END_DICT_ENTRY\n", prefix);
-
- continue;
- }
-
- prefix = strrep("\t", level);
- if (!prefix)
- return log_oom();
-
- if (bus_type_is_container(type) > 0) {
- r = sd_bus_message_enter_container(m, type, contents);
- if (r < 0) {
- log_error("Failed to enter container: %s", strerror(-r));
- return r;
- }
-
- if (type == SD_BUS_TYPE_ARRAY)
- printf("%sBEGIN_ARRAY \"%s\" {\n", prefix, contents);
- else if (type == SD_BUS_TYPE_VARIANT)
- printf("%sBEGIN_VARIANT \"%s\" {\n", prefix, contents);
- else if (type == SD_BUS_TYPE_STRUCT)
- printf("%sBEGIN_STRUCT \"%s\" {\n", prefix, contents);
- else if (type == SD_BUS_TYPE_DICT_ENTRY)
- printf("%sBEGIN_DICT_ENTRY \"%s\" {\n", prefix, contents);
-
- level ++;
-
- continue;
- }
-
- r = sd_bus_message_read_basic(m, type, &basic);
- if (r < 0) {
- log_error("Failed to get basic: %s", strerror(-r));
- return r;
- }
-
- switch (type) {
-
- case SD_BUS_TYPE_BYTE:
- printf("%sBYTE: %u\n", prefix, basic.u8);
- break;
-
- case SD_BUS_TYPE_BOOLEAN:
- printf("%sBOOLEAN: %s\n", prefix, yes_no(basic.i));
- break;
-
- case SD_BUS_TYPE_INT16:
- printf("%sINT16: %i\n", prefix, basic.s16);
- break;
-
- case SD_BUS_TYPE_UINT16:
- printf("%sUINT16: %u\n", prefix, basic.u16);
- break;
-
- case SD_BUS_TYPE_INT32:
- printf("%sINT32: %i\n", prefix, basic.s32);
- break;
-
- case SD_BUS_TYPE_UINT32:
- printf("%sUINT32: %u\n", prefix, basic.u32);
- break;
-
- case SD_BUS_TYPE_INT64:
- printf("%sINT64: %lli\n", prefix, (long long) basic.s64);
- break;
-
- case SD_BUS_TYPE_UINT64:
- printf("%sUINT64: %llu\n", prefix, (unsigned long long) basic.u64);
- break;
-
- case SD_BUS_TYPE_DOUBLE:
- printf("%sDOUBLE: %g\n", prefix, basic.d64);
- break;
-
- case SD_BUS_TYPE_STRING:
- printf("%sSTRING: \"%s\"\n", prefix, basic.string);
- break;
-
- case SD_BUS_TYPE_OBJECT_PATH:
- printf("%sOBJECT_PATH: \"%s\"\n", prefix, basic.string);
- break;
-
- case SD_BUS_TYPE_SIGNATURE:
- printf("%sSIGNATURE: \"%s\"\n", prefix, basic.string);
- break;
-
- case SD_BUS_TYPE_UNIX_FD:
- printf("%sUNIX_FD: %i\n", prefix, basic.i);
- break;
-
- default:
- assert_not_reached("Unknown basic type.");
- }
- }
-
- printf("} END_MESSAGE\n");
- return 0;
-}
-
int bus_message_get_blob(sd_bus_message *m, void **buffer, size_t *sz) {
size_t total;
void *p, *e;
assert(l);
r = sd_bus_message_enter_container(m, 'a', "s");
- if (r < 0)
+ if (r <= 0)
return r;
for (;;) {
if (r < 0)
return r;
- return 0;
+ return 1;
+}
+
+_public_ int sd_bus_message_read_strv(sd_bus_message *m, char ***l) {
+ char **strv = NULL;
+ int r;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->sealed, -EPERM);
+ assert_return(l, -EINVAL);
+
+ r = bus_message_read_strv_extend(m, &strv);
+ if (r <= 0) {
+ strv_free(strv);
+ return r;
+ }
+
+ *l = strv;
+ return 1;
}
const char* bus_message_get_arg(sd_bus_message *m, unsigned i) {
*sum = sizeof(struct bus_header) + ALIGN8(fs) + bs;
return 0;
}
+
+_public_ int sd_bus_message_get_errno(sd_bus_message *m) {
+ assert_return(m, -EINVAL);
+
+ if (m->header->type != SD_BUS_MESSAGE_METHOD_ERROR)
+ return 0;
+
+ return sd_bus_error_get_errno(&m->error);
+}
+
+_public_ const char* sd_bus_message_get_signature(sd_bus_message *m, int complete) {
+ struct bus_container *c;
+
+ assert_return(m, NULL);
+
+ c = complete ? &m->root_container : message_get_container(m);
+ return c->signature ?: "";
+}
+
+_public_ int sd_bus_message_copy(sd_bus_message *m, sd_bus_message *source, int all) {
+ bool done_something = false;
+ int r;
+
+ assert_return(m, -EINVAL);
+ assert_return(source, -EINVAL);
+ assert_return(!m->sealed, -EPERM);
+ assert_return(source->sealed, -EPERM);
+
+ do {
+ const char *contents;
+ char type;
+ union {
+ uint8_t u8;
+ uint16_t u16;
+ int16_t s16;
+ uint32_t u32;
+ int32_t s32;
+ uint64_t u64;
+ int64_t s64;
+ double d64;
+ const char *string;
+ int i;
+ } basic;
+
+ r = sd_bus_message_peek_type(source, &type, &contents);
+ if (r < 0)
+ return r;
+ if (r == 0)
+ break;
+
+ done_something = true;
+
+ if (bus_type_is_container(type) > 0) {
+
+ r = sd_bus_message_enter_container(source, type, contents);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_open_container(m, type, contents);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_copy(m, source, true);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_close_container(m);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_exit_container(source);
+ if (r < 0)
+ return r;
+
+ continue;
+ }
+
+ r = sd_bus_message_read_basic(source, type, &basic);
+ if (r < 0)
+ return r;
+
+ assert(r > 0);
+
+ if (type == SD_BUS_TYPE_OBJECT_PATH ||
+ type == SD_BUS_TYPE_SIGNATURE ||
+ type == SD_BUS_TYPE_STRING)
+ r = sd_bus_message_append_basic(m, type, basic.string);
+ else
+ r = sd_bus_message_append_basic(m, type, &basic);
+
+ if (r < 0)
+ return r;
+
+ } while (all);
+
+ return done_something;
+}
+
+_public_ int sd_bus_message_verify_type(sd_bus_message *m, char type, const char *contents) {
+ const char *c;
+ char t;
+ int r;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->sealed, -EPERM);
+ assert_return(!type || bus_type_is_valid(type), -EINVAL);
+ assert_return(!contents || signature_is_valid(contents, true), -EINVAL);
+ assert_return(type || contents, -EINVAL);
+ assert_return(!contents || !type || bus_type_is_container(type), -EINVAL);
+
+ r = sd_bus_message_peek_type(m, &t, &c);
+ if (r <= 0)
+ return r;
+
+ if (type != 0 && type != t)
+ return 0;
+
+ if (contents && !streq_ptr(contents, c))
+ return 0;
+
+ return 1;
+}
+
+_public_ sd_bus *sd_bus_message_get_bus(sd_bus_message *m) {
+ assert_return(m, NULL);
+
+ return m->bus;
+}
~ianmdlvl / elogind.git / blobdiff