l = strlen(name);
n = alloca0(offsetof(struct kdbus_cmd_name, name) + l + 1);
n->size = offsetof(struct kdbus_cmd_name, name) + l + 1;
- n->flags = flags;
+ kdbus_translate_request_name_flags(flags, (uint64_t *) &n->flags);
memcpy(n->name, name, l+1);
#ifdef HAVE_VALGRIND_MEMCHECK_H
assert_return(!bus_pid_changed(bus), -ECHILD);
if (bus->is_kernel) {
- _cleanup_free_ struct kdbus_cmd_names *names = NULL;
+ _cleanup_free_ struct kdbus_cmd_name_list *cmd = NULL;
+ struct kdbus_name_list *name_list;
struct kdbus_cmd_name *name;
- size_t size;
- /* assume 8k size first. If that doesn't suffice, kdbus will tell us
- * how big the buffer needs to be. */
- size = 8192;
-
- for(;;) {
- names = realloc(names, size);
- if (!names)
- return -ENOMEM;
-
- names->size = size;
- names->flags = KDBUS_NAME_LIST_UNIQUE_NAMES;
+ cmd = malloc0(sizeof(struct kdbus_cmd_name_list *));
+ if (!cmd)
+ return -ENOMEM;
- r = ioctl(sd_bus_get_fd(bus), KDBUS_CMD_NAME_LIST, names);
- if (r < 0) {
- if (errno == ENOBUFS && size != names->size) {
- size = names->size;
- continue;
- }
+ cmd->flags = KDBUS_NAME_LIST_UNIQUE_NAMES;
- return -errno;
- }
+ r = ioctl(sd_bus_get_fd(bus), KDBUS_CMD_NAME_LIST, cmd);
+ if (r < 0)
+ return -errno;
- break;
- }
+ name_list = (struct kdbus_name_list *) ((uint8_t *) bus->kdbus_buffer + cmd->offset);
- KDBUS_PART_FOREACH(name, names, names) {
+ KDBUS_PART_FOREACH(name, name_list, names) {
char *n;
if (name->size > sizeof(*name))
return -ENOMEM;
}
+ r = ioctl(sd_bus_get_fd(bus), KDBUS_CMD_FREE, &cmd->offset);
+ if (r < 0)
+ return -errno;
+
*l = x;
} else {
r = sd_bus_call_method(
return 0;
}
-_public_ int sd_bus_get_owner(
+static int bus_get_owner_dbus(
sd_bus *bus,
const char *name,
uint64_t mask,
- char **owner,
sd_bus_creds **creds) {
- _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
+ _cleanup_bus_message_unref_ sd_bus_message *reply_unique = NULL, *reply = NULL;
_cleanup_bus_creds_unref_ sd_bus_creds *c = NULL;
- _cleanup_free_ char *unique = NULL;
+ const char *unique = NULL;
pid_t pid = 0;
int r;
- assert_return(bus, -EINVAL);
- assert_return(name, -EINVAL);
- assert_return(mask <= _SD_BUS_CREDS_MAX, -ENOTSUP);
- assert_return(mask == 0 || creds, -EINVAL);
- assert_return(BUS_IS_OPEN(bus->state), -ENOTCONN);
- assert_return(!bus_pid_changed(bus), -ECHILD);
-
/* Only query the owner if the caller wants to know it or if
* the caller just wants to check whether a name exists */
- if (owner || mask == 0) {
- const char *found;
-
+ if ((mask & SD_BUS_CREDS_UNIQUE_NAME) || mask == 0) {
r = sd_bus_call_method(
bus,
"org.freedesktop.DBus",
"org.freedesktop.DBus",
"GetNameOwner",
NULL,
- &reply,
+ &reply_unique,
"s",
name);
if (r < 0)
return r;
- r = sd_bus_message_read(reply, "s", &found);
+ r = sd_bus_message_read(reply_unique, "s", &unique);
if (r < 0)
return r;
-
- unique = strdup(found);
- if (!unique)
- return -ENOMEM;
-
- reply = sd_bus_message_unref(reply);
}
if (mask != 0) {
if (!c)
return -ENOMEM;
- if ((mask & SD_BUS_CREDS_PID) ||
- mask & ~(SD_BUS_CREDS_PID|SD_BUS_CREDS_UID|SD_BUS_CREDS_SELINUX_CONTEXT)) {
+ if ((mask & SD_BUS_CREDS_UNIQUE_NAME) && unique) {
+ c->unique_name = strdup(unique);
+ if (!c->unique_name)
+ return -ENOMEM;
+
+ c->mask |= SD_BUS_CREDS_UNIQUE_NAME;
+ }
+
+ if (mask & (SD_BUS_CREDS_PID|SD_BUS_CREDS_PID_STARTTIME|SD_BUS_CREDS_GID|
+ SD_BUS_CREDS_COMM|SD_BUS_CREDS_EXE|SD_BUS_CREDS_CMDLINE|
+ SD_BUS_CREDS_CGROUP|SD_BUS_CREDS_UNIT|SD_BUS_CREDS_USER_UNIT|SD_BUS_CREDS_SLICE|SD_BUS_CREDS_SESSION|SD_BUS_CREDS_OWNER_UID|
+ SD_BUS_CREDS_EFFECTIVE_CAPS|SD_BUS_CREDS_PERMITTED_CAPS|SD_BUS_CREDS_INHERITABLE_CAPS|SD_BUS_CREDS_BOUNDING_CAPS|
+ SD_BUS_CREDS_AUDIT_SESSION_ID|SD_BUS_CREDS_AUDIT_LOGIN_UID)) {
uint32_t u;
r = sd_bus_call_method(
NULL,
&reply,
"s",
- name);
+ unique ? unique : name);
if (r < 0)
return r;
NULL,
&reply,
"s",
- name);
+ unique ? unique : name);
if (r < 0)
return r;
NULL,
&reply,
"s",
- name);
+ unique ? unique : name);
if (r < 0)
return r;
c = NULL;
}
- if (owner) {
- *owner = unique;
- unique = NULL;
+ return 0;
+}
+
+static int bus_get_owner_kdbus(
+ sd_bus *bus,
+ const char *name,
+ uint64_t mask,
+ sd_bus_creds **creds) {
+
+ _cleanup_bus_creds_unref_ sd_bus_creds *c = NULL;
+ struct kdbus_cmd_name_info *cmd;
+ struct kdbus_name_info *name_info;
+ struct kdbus_item *item;
+ size_t size;
+ uint64_t m, id;
+ int r;
+
+ r = bus_kernel_parse_unique_name(name, &id);
+ if (r < 0)
+ return r;
+ if (r > 0) {
+ size = offsetof(struct kdbus_cmd_name_info, name);
+ cmd = alloca0(size);
+ cmd->id = id;
+ } else {
+ size = offsetof(struct kdbus_cmd_name_info, name) + strlen(name) + 1;
+ cmd = alloca0(size);
+ strcpy(cmd->name, name);
+ }
+
+ cmd->size = size;
+ r = ioctl(bus->input_fd, KDBUS_CMD_NAME_INFO, cmd);
+ if (r < 0)
+ return -errno;
+
+ name_info = (struct kdbus_name_info *) ((uint8_t *) bus->kdbus_buffer + cmd->offset);
+
+ c = bus_creds_new();
+ if (!c)
+ return -ENOMEM;
+
+ if (mask & SD_BUS_CREDS_UNIQUE_NAME) {
+ if (asprintf(&c->unique_name, ":1.%llu", (unsigned long long) name_info->id) < 0)
+ return -ENOMEM;
+
+ c->mask |= SD_BUS_CREDS_UNIQUE_NAME;
}
- return 0;
+ KDBUS_PART_FOREACH(item, name_info, items) {
+
+ switch (item->type) {
+
+ case KDBUS_ITEM_CREDS:
+ m = (SD_BUS_CREDS_UID | SD_BUS_CREDS_GID | SD_BUS_CREDS_PID |
+ SD_BUS_CREDS_TID | SD_BUS_CREDS_PID_STARTTIME) & mask;
+
+ if (m) {
+ c->uid = item->creds.uid;
+ c->pid = item->creds.pid;
+ c->gid = item->creds.gid;
+ c->tid = item->creds.tid;
+ c->pid_starttime = item->creds.starttime;
+ c->mask |= m;
+ }
+ break;
+
+ case KDBUS_ITEM_PID_COMM:
+ if (mask & SD_BUS_CREDS_COMM) {
+ c->comm = strdup(item->str);
+ if (!c->comm) {
+ r = -ENOMEM;
+ goto fail;
+ }
+
+ c->mask |= SD_BUS_CREDS_COMM;
+ }
+ break;
+
+ case KDBUS_ITEM_TID_COMM:
+ if (mask & SD_BUS_CREDS_TID_COMM) {
+ c->tid_comm = strdup(item->str);
+ if (!c->tid_comm) {
+ r = -ENOMEM;
+ goto fail;
+ }
+
+ c->mask |= SD_BUS_CREDS_TID_COMM;
+ }
+ break;
+
+ case KDBUS_ITEM_EXE:
+ if (mask & SD_BUS_CREDS_EXE) {
+ c->exe = strdup(item->str);
+ if (!c->exe) {
+ r = -ENOMEM;
+ goto fail;
+ }
+
+ c->mask |= SD_BUS_CREDS_EXE;
+ }
+ break;
+
+ case KDBUS_ITEM_CMDLINE:
+ if (mask & SD_BUS_CREDS_CMDLINE) {
+ c->cmdline_size = item->size - KDBUS_PART_HEADER_SIZE;
+ c->cmdline = memdup(item->data, c->cmdline_size);
+ if (!c->cmdline) {
+ r = -ENOMEM;
+ goto fail;
+ }
+
+ c->mask |= SD_BUS_CREDS_CMDLINE;
+ }
+ break;
+
+ case KDBUS_ITEM_CGROUP:
+ m = (SD_BUS_CREDS_CGROUP | SD_BUS_CREDS_UNIT |
+ SD_BUS_CREDS_USER_UNIT | SD_BUS_CREDS_SLICE |
+ SD_BUS_CREDS_SESSION | SD_BUS_CREDS_OWNER_UID) & mask;
+
+ if (m) {
+ c->cgroup = strdup(item->str);
+ if (!c->cgroup) {
+ r = -ENOMEM;
+ goto fail;
+ }
+
+ c->mask |= m;
+ }
+ break;
+
+ case KDBUS_ITEM_CAPS:
+ m = (SD_BUS_CREDS_EFFECTIVE_CAPS | SD_BUS_CREDS_PERMITTED_CAPS |
+ SD_BUS_CREDS_INHERITABLE_CAPS | SD_BUS_CREDS_BOUNDING_CAPS) & mask;
+
+ if (m) {
+ c->capability_size = item->size - KDBUS_PART_HEADER_SIZE;
+ c->capability = memdup(item->data, c->capability_size);
+ if (!c->capability) {
+ r = -ENOMEM;
+ goto fail;
+ }
+
+ c->mask |= m;
+ }
+ break;
+
+ case KDBUS_ITEM_SECLABEL:
+ if (mask & SD_BUS_CREDS_SELINUX_CONTEXT) {
+ c->label = strdup(item->str);
+ if (!c->label) {
+ r = -ENOMEM;
+ goto fail;
+ }
+
+ c->mask |= SD_BUS_CREDS_SELINUX_CONTEXT;
+ }
+ break;
+
+ case KDBUS_ITEM_AUDIT:
+ m = (SD_BUS_CREDS_AUDIT_SESSION_ID | SD_BUS_CREDS_AUDIT_LOGIN_UID) & mask;
+
+ if (m) {
+ c->audit_session_id = item->audit.sessionid;
+ c->audit_login_uid = item->audit.loginuid;
+ c->mask |= m;
+ }
+ break;
+
+ case KDBUS_ITEM_NAMES:
+ if (mask & SD_BUS_CREDS_WELL_KNOWN_NAMES) {
+ c->well_known_names_size = item->size - KDBUS_PART_HEADER_SIZE;
+ c->well_known_names = memdup(item->data, c->well_known_names_size);
+ if (!c->well_known_names) {
+ r = -ENOMEM;
+ goto fail;
+ }
+
+ c->mask |= SD_BUS_CREDS_WELL_KNOWN_NAMES;
+ }
+ break;
+ }
+ }
+
+ if (creds) {
+ *creds = c;
+ c = NULL;
+ }
+
+ r = 0;
+
+fail:
+ ioctl(bus->input_fd, KDBUS_CMD_FREE, &cmd->offset);
+ return r;
+}
+
+_public_ int sd_bus_get_owner(
+ sd_bus *bus,
+ const char *name,
+ uint64_t mask,
+ sd_bus_creds **creds) {
+
+ assert_return(bus, -EINVAL);
+ assert_return(name, -EINVAL);
+ assert_return(mask <= _SD_BUS_CREDS_MAX, -ENOTSUP);
+ assert_return(mask == 0 || creds, -EINVAL);
+ assert_return(BUS_IS_OPEN(bus->state), -ENOTCONN);
+ assert_return(!bus_pid_changed(bus), -ECHILD);
+
+ if (bus->is_kernel)
+ return bus_get_owner_kdbus(bus, name, mask, creds);
+ else
+ return bus_get_owner_dbus(bus, name, mask, creds);
}
static int add_name_change_match(sd_bus *bus,
}
if (is_name_id <= 0) {
+ struct kdbus_cmd_match *m;
size_t sz, l;
/* If the name argument is missing or is a well-known
offsetof(struct kdbus_notify_name_change, name) +
l+1);
- {
- union {
- uint8_t buffer[sz];
- struct kdbus_cmd_match match;
- } m;
-
- memzero(&m, sz);
-
- m.match.size = sz;
- m.match.cookie = cookie;
- m.match.src_id = KDBUS_SRC_ID_KERNEL;
+ m = alloca0(sz);
+ m->size = sz;
+ m->cookie = cookie;
+ m->src_id = KDBUS_SRC_ID_KERNEL;
- item = m.match.items;
- item->size =
- offsetof(struct kdbus_item, name_change) +
- offsetof(struct kdbus_notify_name_change, name) +
- l+1;
+ item = m->items;
+ item->size =
+ offsetof(struct kdbus_item, name_change) +
+ offsetof(struct kdbus_notify_name_change, name) +
+ l+1;
- item->name_change.old_id = old_owner_id;
- item->name_change.new_id = new_owner_id;
+ item->name_change.old_id = old_owner_id;
+ item->name_change.new_id = new_owner_id;
- if (name)
- strcpy(item->name_change.name, name);
+ if (name)
+ strcpy(item->name_change.name, name);
- /* If the old name is unset or empty, then
- * this can match against added names */
- if (!old_owner || old_owner[0] == 0) {
- item->type = KDBUS_MATCH_NAME_ADD;
+ /* If the old name is unset or empty, then
+ * this can match against added names */
+ if (!old_owner || old_owner[0] == 0) {
+ item->type = KDBUS_MATCH_NAME_ADD;
- r = ioctl(bus->input_fd, KDBUS_CMD_MATCH_ADD, m);
- if (r < 0)
- return -errno;
- }
+ r = ioctl(bus->input_fd, KDBUS_CMD_MATCH_ADD, m);
+ if (r < 0)
+ return -errno;
+ }
- /* If the new name is unset or empty, then
- * this can match against removed names */
- if (!new_owner || new_owner[0] == 0) {
- item->type = KDBUS_MATCH_NAME_REMOVE;
+ /* If the new name is unset or empty, then
+ * this can match against removed names */
+ if (!new_owner || new_owner[0] == 0) {
+ item->type = KDBUS_MATCH_NAME_REMOVE;
- r = ioctl(bus->input_fd, KDBUS_CMD_MATCH_ADD, m);
- if (r < 0)
- return -errno;
- }
+ r = ioctl(bus->input_fd, KDBUS_CMD_MATCH_ADD, m);
+ if (r < 0)
+ return -errno;
+ }
- /* If the neither name is explicitly set to
- * the empty string, then this can match
- * agains changed names */
- if (!(old_owner && old_owner[0] == 0) &&
- !(new_owner && new_owner[0] == 0)) {
- item->type = KDBUS_MATCH_NAME_CHANGE;
+ /* If the neither name is explicitly set to
+ * the empty string, then this can match
+ * agains changed names */
+ if (!(old_owner && old_owner[0] == 0) &&
+ !(new_owner && new_owner[0] == 0)) {
+ item->type = KDBUS_MATCH_NAME_CHANGE;
- r = ioctl(bus->input_fd, KDBUS_CMD_MATCH_ADD, m);
- if (r < 0)
- return -errno;
- }
+ r = ioctl(bus->input_fd, KDBUS_CMD_MATCH_ADD, m);
+ if (r < 0)
+ return -errno;
}
}
if (is_name_id != 0) {
- uint64_t sz =
- ALIGN8(offsetof(struct kdbus_cmd_match, items) +
- offsetof(struct kdbus_item, id_change) +
- sizeof(struct kdbus_notify_id_change));
- union {
- uint8_t buffer[sz];
- struct kdbus_cmd_match match;
- } m;
+ struct kdbus_cmd_match *m;
+ uint64_t sz;
/* If the name argument is missing or is a unique
* name, then add KDBUS_MATCH_ID_{ADD,REMOVE} matches
* for it */
- memzero(&m, sz);
+ sz = ALIGN8(offsetof(struct kdbus_cmd_match, items) +
+ offsetof(struct kdbus_item, id_change) +
+ sizeof(struct kdbus_notify_id_change));
- m.match.size = sz;
- m.match.cookie = cookie;
- m.match.src_id = KDBUS_SRC_ID_KERNEL;
+ m = alloca0(sz);
+ m->size = sz;
+ m->cookie = cookie;
+ m->src_id = KDBUS_SRC_ID_KERNEL;
- item = m.match.items;
+ item = m->items;
item->size = offsetof(struct kdbus_item, id_change) + sizeof(struct kdbus_notify_id_change);
item->id_change.id = name_id;
~ianmdlvl / elogind.git / blobdiff