#endif
#include <fcntl.h>
+#include <malloc.h>
#include "util.h"
#include "bus-kernel.h"
#include "bus-bloom.h"
-#define KDBUS_FOREACH_ITEM(i, k) \
- for ((i) = (k)->items; \
- (uint8_t*) (i) < (uint8_t*) (k) + (k)->size; \
- (i) = (struct kdbus_msg_item *) ((uint8_t*) (i) + ALIGN8((i)->size)))
+#define KDBUS_ITEM_NEXT(item) \
+ (typeof(item))(((uint8_t *)item) + ALIGN8((item)->size))
+
+#define KDBUS_ITEM_FOREACH(item, head) \
+ for (item = (head)->items; \
+ (uint8_t *)(item) < (uint8_t *)(head) + (head)->size; \
+ item = KDBUS_ITEM_NEXT(item))
+
+#define KDBUS_ITEM_HEADER_SIZE offsetof(struct kdbus_item, data)
+#define KDBUS_ITEM_SIZE(s) ALIGN8((s) + KDBUS_ITEM_HEADER_SIZE)
static int parse_unique_name(const char *s, uint64_t *id) {
int r;
return 1;
}
-static void append_payload_vec(struct kdbus_msg_item **d, const void *p, size_t sz) {
+static void append_payload_vec(struct kdbus_item **d, const void *p, size_t sz) {
assert(d);
assert(p);
assert(sz > 0);
*d = ALIGN8_PTR(*d);
- (*d)->size = offsetof(struct kdbus_msg_item, vec) + sizeof(struct kdbus_vec);
+ (*d)->size = offsetof(struct kdbus_item, vec) + sizeof(struct kdbus_vec);
(*d)->type = KDBUS_MSG_PAYLOAD_VEC;
- (*d)->vec.address = (uint64_t) p;
+ (*d)->vec.address = (intptr_t) p;
(*d)->vec.size = sz;
- *d = (struct kdbus_msg_item *) ((uint8_t*) *d + (*d)->size);
+ *d = (struct kdbus_item *) ((uint8_t*) *d + (*d)->size);
}
-static void append_destination(struct kdbus_msg_item **d, const char *s, size_t length) {
+static void append_destination(struct kdbus_item **d, const char *s, size_t length) {
assert(d);
assert(s);
*d = ALIGN8_PTR(*d);
- (*d)->size = offsetof(struct kdbus_msg_item, str) + length + 1;
+ (*d)->size = offsetof(struct kdbus_item, str) + length + 1;
(*d)->type = KDBUS_MSG_DST_NAME;
memcpy((*d)->str, s, length + 1);
- *d = (struct kdbus_msg_item *) ((uint8_t*) *d + (*d)->size);
+ *d = (struct kdbus_item *) ((uint8_t*) *d + (*d)->size);
}
-static void* append_bloom(struct kdbus_msg_item **d, size_t length) {
+static void* append_bloom(struct kdbus_item **d, size_t length) {
void *r;
assert(d);
*d = ALIGN8_PTR(*d);
- (*d)->size = offsetof(struct kdbus_msg_item, data) + length;
+ (*d)->size = offsetof(struct kdbus_item, data) + length;
(*d)->type = KDBUS_MSG_BLOOM;
r = (*d)->data;
- *d = (struct kdbus_msg_item *) ((uint8_t*) *d + (*d)->size);
+ *d = (struct kdbus_item *) ((uint8_t*) *d + (*d)->size);
return r;
}
+static void append_fds(struct kdbus_item **d, const int fds[], unsigned n_fds) {
+ assert(d);
+ assert(fds);
+ assert(n_fds > 0);
+
+ *d = ALIGN8_PTR(*d);
+ (*d)->size = offsetof(struct kdbus_item, fds) + sizeof(int) * n_fds;
+ (*d)->type = KDBUS_MSG_UNIX_FDS;
+ memcpy((*d)->fds, fds, sizeof(int) * n_fds);
+
+ *d = (struct kdbus_item *) ((uint8_t*) *d + (*d)->size);
+}
+
static int bus_message_setup_bloom(sd_bus_message *m, void *bloom) {
unsigned i;
int r;
}
static int bus_message_setup_kmsg(sd_bus *b, sd_bus_message *m) {
- struct kdbus_msg_item *d;
+ struct kdbus_item *d;
bool well_known;
uint64_t unique;
size_t sz, dl;
sz = offsetof(struct kdbus_msg, items);
/* Add in fixed header, fields header and payload */
- sz += 3 * ALIGN8(offsetof(struct kdbus_msg_item, vec) + sizeof(struct kdbus_vec));
+ sz += 3 * ALIGN8(offsetof(struct kdbus_item, vec) + sizeof(struct kdbus_vec));
/* Add space for bloom filter */
- sz += ALIGN8(offsetof(struct kdbus_msg_item, data) + BLOOM_SIZE);
+ sz += ALIGN8(offsetof(struct kdbus_item, data) + BLOOM_SIZE);
/* Add in well-known destination header */
if (well_known) {
dl = strlen(m->destination);
- sz += ALIGN8(offsetof(struct kdbus_msg_item, str) + dl + 1);
+ sz += ALIGN8(offsetof(struct kdbus_item, str) + dl + 1);
}
- m->kdbus = aligned_alloc(8, sz);
+ /* Add space for unix fds */
+ if (m->n_fds > 0)
+ sz += ALIGN8(offsetof(struct kdbus_item, fds) + sizeof(int)*m->n_fds);
+
+ m->kdbus = memalign(8, sz);
if (!m->kdbus)
return -ENOMEM;
if (m->kdbus->dst_id == KDBUS_DST_ID_BROADCAST) {
void *p;
- /* For now, let's add a mask all bloom filter */
p = append_bloom(&d, BLOOM_SIZE);
r = bus_message_setup_bloom(m, p);
if (r < 0) {
}
}
+ if (m->n_fds > 0)
+ append_fds(&d, m->fds, m->n_fds);
+
m->kdbus->size = (uint8_t*) d - (uint8_t*) m->kdbus;
assert(m->kdbus->size <= sz);
int bus_kernel_take_fd(sd_bus *b) {
struct kdbus_cmd_hello hello = {
.conn_flags =
- KDBUS_CMD_HELLO_ACCEPT_FD|
- KDBUS_CMD_HELLO_ACCEPT_MMAP|
- KDBUS_CMD_HELLO_ATTACH_COMM|
- KDBUS_CMD_HELLO_ATTACH_EXE|
- KDBUS_CMD_HELLO_ATTACH_CMDLINE|
- KDBUS_CMD_HELLO_ATTACH_CGROUP|
- KDBUS_CMD_HELLO_ATTACH_CAPS|
- KDBUS_CMD_HELLO_ATTACH_SECLABEL|
- KDBUS_CMD_HELLO_ATTACH_AUDIT
+ KDBUS_HELLO_ACCEPT_FD|
+ KDBUS_HELLO_ATTACH_COMM|
+ KDBUS_HELLO_ATTACH_EXE|
+ KDBUS_HELLO_ATTACH_CMDLINE|
+ KDBUS_HELLO_ATTACH_CGROUP|
+ KDBUS_HELLO_ATTACH_CAPS|
+ KDBUS_HELLO_ATTACH_SECLABEL|
+ KDBUS_HELLO_ATTACH_AUDIT
};
int r;
b->is_kernel = true;
b->bus_client = true;
+ b->can_fds = true;
r = bus_start_running(b);
if (r < 0)
}
static void close_kdbus_msg(struct kdbus_msg *k) {
- struct kdbus_msg_item *d;
+ struct kdbus_item *d;
- KDBUS_FOREACH_ITEM(d, k) {
+ KDBUS_ITEM_FOREACH(d, k) {
if (d->type != KDBUS_MSG_UNIX_FDS)
continue;
- close_many(d->fds, (d->size - offsetof(struct kdbus_msg_item, fds)) / sizeof(int));
+ close_many(d->fds, (d->size - offsetof(struct kdbus_item, fds)) / sizeof(int));
}
}
static int bus_kernel_make_message(sd_bus *bus, struct kdbus_msg *k, sd_bus_message **ret) {
sd_bus_message *m = NULL;
- struct kdbus_msg_item *d;
+ struct kdbus_item *d;
unsigned n_payload = 0, n_fds = 0;
_cleanup_free_ int *fds = NULL;
struct bus_header *h = NULL;
if (k->payload_type != KDBUS_PAYLOAD_DBUS1)
return 0;
- KDBUS_FOREACH_ITEM(d, k) {
+ KDBUS_ITEM_FOREACH(d, k) {
size_t l;
- l = d->size - offsetof(struct kdbus_msg_item, data);
+ l = d->size - offsetof(struct kdbus_item, data);
if (d->type == KDBUS_MSG_PAYLOAD) {
return -ENOMEM;
fds = f;
- memcpy(fds + n_fds, d->fds, j);
+ memcpy(fds + n_fds, d->fds, sizeof(int) * j);
n_fds += j;
} else if (d->type == KDBUS_MSG_DST_NAME)
if (r < 0)
return r;
- KDBUS_FOREACH_ITEM(d, k) {
+ KDBUS_ITEM_FOREACH(d, k) {
size_t l;
- l = d->size - offsetof(struct kdbus_msg_item, data);
+ l = d->size - offsetof(struct kdbus_item, data);
if (d->type == KDBUS_MSG_PAYLOAD) {
m->cmdline_length = l;
} else if (d->type == KDBUS_MSG_SRC_CGROUP)
m->cgroup = d->str;
- else
+ else if (d->type == KDBUS_MSG_SRC_AUDIT)
+ m->audit = &d->audit;
+ else if (d->type == KDBUS_MSG_SRC_CAPS) {
+ m->capability = d->data;
+ m->capability_size = l;
+ } else
log_debug("Got unknown field from kernel %llu", d->type);
}
for (;;) {
void *q;
- q = aligned_alloc(8, sz);
+ q = memalign(8, sz);
if (!q)
return -errno;
int bus_kernel_create(const char *name, char **s) {
struct kdbus_cmd_bus_make *make;
+ struct kdbus_item *n, *cg;
size_t l;
int fd;
char *p;
return -errno;
l = strlen(name);
- make = alloca0(offsetof(struct kdbus_cmd_bus_make, name) + DECIMAL_STR_MAX(uid_t) + 1 + l + 1);
- sprintf(make->name, "%lu-%s", (unsigned long) getuid(), name);
- make->size = offsetof(struct kdbus_cmd_bus_make, name) + strlen(make->name) + 1;
- make->flags = KDBUS_ACCESS_WORLD | KDBUS_POLICY_OPEN;
+ make = alloca0(offsetof(struct kdbus_cmd_bus_make, items) +
+ KDBUS_ITEM_HEADER_SIZE + sizeof(uint64_t) +
+ KDBUS_ITEM_HEADER_SIZE + DECIMAL_STR_MAX(uid_t) + 1 + l + 1);
+
+ cg = make->items;
+ cg->type = KDBUS_MAKE_CGROUP;
+ cg->data64[0] = 1;
+ cg->size = KDBUS_ITEM_HEADER_SIZE + sizeof(uint64_t);
+
+ n = KDBUS_ITEM_NEXT(cg);
+ n->type = KDBUS_MAKE_NAME;
+ sprintf(n->str, "%lu-%s", (unsigned long) getuid(), name);
+ n->size = KDBUS_ITEM_HEADER_SIZE + strlen(n->str) + 1;
+
+ make->size = offsetof(struct kdbus_cmd_bus_make, items) + cg->size + n->size;
+ make->flags = KDBUS_MAKE_ACCESS_WORLD | KDBUS_MAKE_POLICY_OPEN;
make->bus_flags = 0;
make->bloom_size = BLOOM_SIZE;
- make->cgroup_id = 1;
assert_cc(BLOOM_SIZE % 8 == 0);
- p = strjoin("/dev/kdbus/", make->name, "/bus", NULL);
+ p = strjoin("/dev/kdbus/", n->str, "/bus", NULL);
if (!p)
return -ENOMEM;
~ianmdlvl / elogind.git / blobdiff