e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering#ifdef HAVE_VALGRIND_MEMCHECK_H

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering#include <valgrind/memcheck.h>

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering#endif

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering#include <fcntl.h>

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering#include <malloc.h>

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering#include <libgen.h>

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering#include <sys/mman.h>

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering#include <sys/prctl.h>

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering#include "util.h"

5892a914d173e4b968d2a14fbf717373dee3999aDaniel Mack#include "strv.h"

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering#include "memfd-util.h"

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering#include "bus-internal.h"

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering#include "bus-message.h"

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering#include "bus-kernel.h"

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering#include "bus-bloom.h"

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering#include "bus-util.h"

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering#include "bus-label.h"

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering#include "cgroup-util.h"

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering#define UNIQUE_NAME_MAX (3+DECIMAL_STR_MAX(uint64_t))

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poetteringint bus_kernel_parse_unique_name(const char *s, uint64_t *id) {

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering int r;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering assert(s);

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering assert(id);

3f9da416457c4265b8f1179516a32ad1a987ff7dLennart Poettering

4f10118016f9b2fd7e1d26c9ef7d91eb33fba694Lennart Poettering if (!startswith(s, ":1."))

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering return 0;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering r = safe_atou64(s + 3, id);

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering if (r < 0)

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering return r;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering return 1;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering}

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poetteringstatic void append_payload_vec(struct kdbus_item **d, const void *p, size_t sz) {

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering assert(d);

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering assert(sz > 0);

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering *d = ALIGN8_PTR(*d);

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering /* Note that p can be NULL, which encodes a region full of

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering (*d)->size = offsetof(struct kdbus_item, vec) + sizeof(struct kdbus_vec);

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering (*d)->type = KDBUS_ITEM_PAYLOAD_VEC;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering (*d)->vec.address = PTR_TO_UINT64(p);

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering (*d)->vec.size = sz;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering *d = (struct kdbus_item *) ((uint8_t*) *d + (*d)->size);

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering}

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poetteringstatic void append_payload_memfd(struct kdbus_item **d, int memfd, size_t sz) {

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering assert(d);

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering assert(memfd >= 0);

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering assert(sz > 0);

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering *d = ALIGN8_PTR(*d);

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering (*d)->size = offsetof(struct kdbus_item, memfd) + sizeof(struct kdbus_memfd);

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering (*d)->type = KDBUS_ITEM_PAYLOAD_MEMFD;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering (*d)->memfd.fd = memfd;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering (*d)->memfd.size = sz;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering *d = (struct kdbus_item *) ((uint8_t*) *d + (*d)->size);

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering}

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poetteringstatic void append_destination(struct kdbus_item **d, const char *s, size_t length) {

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering assert(d);

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering assert(s);

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering *d = ALIGN8_PTR(*d);

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering (*d)->size = offsetof(struct kdbus_item, str) + length + 1;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering (*d)->type = KDBUS_ITEM_DST_NAME;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering memcpy((*d)->str, s, length + 1);

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering *d = (struct kdbus_item *) ((uint8_t*) *d + (*d)->size);

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering}

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poetteringstatic struct kdbus_bloom_filter *append_bloom(struct kdbus_item **d, size_t length) {

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering struct kdbus_item *i;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering assert(d);

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering i = ALIGN8_PTR(*d);

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering i->size = offsetof(struct kdbus_item, bloom_filter) +

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering offsetof(struct kdbus_bloom_filter, data) +

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering length;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering i->type = KDBUS_ITEM_BLOOM_FILTER;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering *d = (struct kdbus_item *) ((uint8_t*) i + i->size);

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering return &i->bloom_filter;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering}

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poetteringstatic void append_fds(struct kdbus_item **d, const int fds[], unsigned n_fds) {

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering assert(d);

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering assert(fds);

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering assert(n_fds > 0);

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering *d = ALIGN8_PTR(*d);

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering (*d)->size = offsetof(struct kdbus_item, fds) + sizeof(int) * n_fds;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering (*d)->type = KDBUS_ITEM_FDS;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering memcpy((*d)->fds, fds, sizeof(int) * n_fds);

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering *d = (struct kdbus_item *) ((uint8_t*) *d + (*d)->size);

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering}

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poetteringstatic int bus_message_setup_bloom(sd_bus_message *m, struct kdbus_bloom_filter *bloom) {

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering void *data;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering unsigned i;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering int r;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering assert(m);

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering assert(bloom);

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering data = bloom->data;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering memzero(data, m->bus->bloom_size);

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering bloom->generation = 0;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering bloom_add_pair(data, m->bus->bloom_size, m->bus->bloom_n_hash, "message-type", bus_message_type_to_string(m->header->type));

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering if (m->interface)

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering bloom_add_pair(data, m->bus->bloom_size, m->bus->bloom_n_hash, "interface", m->interface);

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering if (m->member)

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering bloom_add_pair(data, m->bus->bloom_size, m->bus->bloom_n_hash, "member", m->member);

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering if (m->path) {

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering bloom_add_pair(data, m->bus->bloom_size, m->bus->bloom_n_hash, "path", m->path);

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering bloom_add_pair(data, m->bus->bloom_size, m->bus->bloom_n_hash, "path-slash-prefix", m->path);

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering bloom_add_prefixes(data, m->bus->bloom_size, m->bus->bloom_n_hash, "path-slash-prefix", m->path, '/');

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering }

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering r = sd_bus_message_rewind(m, true);

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering if (r < 0)

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering return r;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering for (i = 0; i < 64; i++) {

5892a914d173e4b968d2a14fbf717373dee3999aDaniel Mack char type;

5892a914d173e4b968d2a14fbf717373dee3999aDaniel Mack const char *t;

5892a914d173e4b968d2a14fbf717373dee3999aDaniel Mack char buf[sizeof("arg")-1 + 2 + sizeof("-slash-prefix")];

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering char *e;

5892a914d173e4b968d2a14fbf717373dee3999aDaniel Mack

5892a914d173e4b968d2a14fbf717373dee3999aDaniel Mack r = sd_bus_message_peek_type(m, &type, NULL);

5892a914d173e4b968d2a14fbf717373dee3999aDaniel Mack if (r < 0)

5892a914d173e4b968d2a14fbf717373dee3999aDaniel Mack return r;

5892a914d173e4b968d2a14fbf717373dee3999aDaniel Mack

5892a914d173e4b968d2a14fbf717373dee3999aDaniel Mack if (type != SD_BUS_TYPE_STRING &&

5892a914d173e4b968d2a14fbf717373dee3999aDaniel Mack type != SD_BUS_TYPE_OBJECT_PATH &&

5892a914d173e4b968d2a14fbf717373dee3999aDaniel Mack type != SD_BUS_TYPE_SIGNATURE)

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering break;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering r = sd_bus_message_read_basic(m, type, &t);

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering if (r < 0)

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering return r;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering e = stpcpy(buf, "arg");

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering if (i < 10)

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering *(e++) = '0' + (char) i;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering else {

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering *(e++) = '0' + (char) (i / 10);

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering *(e++) = '0' + (char) (i % 10);

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering }

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering *e = 0;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering bloom_add_pair(data, m->bus->bloom_size, m->bus->bloom_n_hash, buf, t);

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering strcpy(e, "-dot-prefix");

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering bloom_add_prefixes(data, m->bus->bloom_size, m->bus->bloom_n_hash, buf, t, '.');

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering strcpy(e, "-slash-prefix");

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering bloom_add_prefixes(data, m->bus->bloom_size, m->bus->bloom_n_hash, buf, t, '/');

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering }

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering return 0;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering}

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poetteringstatic int bus_message_setup_kmsg(sd_bus *b, sd_bus_message *m) {

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering struct bus_body_part *part;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering struct kdbus_item *d;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering const char *destination;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering bool well_known;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering uint64_t unique;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering size_t sz, dl;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering unsigned i;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering int r;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering assert(b);

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering assert(m);

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering assert(m->sealed);

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering /* We put this together only once, if this message is reused

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering if (m->kdbus)

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering return 0;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering destination = m->destination ?: m->destination_ptr;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering if (destination) {

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering r = bus_kernel_parse_unique_name(destination, &unique);

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering if (r < 0)

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering return r;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering well_known = r == 0;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering } else

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering well_known = false;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering sz = offsetof(struct kdbus_msg, items);

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering assert_cc(ALIGN8(offsetof(struct kdbus_item, vec) + sizeof(struct kdbus_vec)) ==

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering ALIGN8(offsetof(struct kdbus_item, memfd) + sizeof(struct kdbus_memfd)));

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering /* Add in fixed header, fields header and payload */

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering sz += (1 + m->n_body_parts) *

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering ALIGN8(offsetof(struct kdbus_item, vec) + sizeof(struct kdbus_vec));

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

3f9da416457c4265b8f1179516a32ad1a987ff7dLennart Poettering /* Add space for bloom filter */

5892a914d173e4b968d2a14fbf717373dee3999aDaniel Mack sz += ALIGN8(offsetof(struct kdbus_item, bloom_filter) +

3f9da416457c4265b8f1179516a32ad1a987ff7dLennart Poettering offsetof(struct kdbus_bloom_filter, data) +

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering m->bus->bloom_size);

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

3f9da416457c4265b8f1179516a32ad1a987ff7dLennart Poettering /* Add in well-known destination header */

5892a914d173e4b968d2a14fbf717373dee3999aDaniel Mack if (well_known) {

3f9da416457c4265b8f1179516a32ad1a987ff7dLennart Poettering dl = strlen(destination);

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering sz += ALIGN8(offsetof(struct kdbus_item, str) + dl + 1);

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering }

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering /* Add space for unix fds */

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering if (m->n_fds > 0)

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering sz += ALIGN8(offsetof(struct kdbus_item, fds) + sizeof(int)*m->n_fds);

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering m->kdbus = memalign(8, sz);

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering if (!m->kdbus) {

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering r = -ENOMEM;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering goto fail;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering }

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering m->free_kdbus = true;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering memzero(m->kdbus, sz);

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering m->kdbus->flags =

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering ((m->header->flags & BUS_MESSAGE_NO_REPLY_EXPECTED) ? 0 : KDBUS_MSG_FLAGS_EXPECT_REPLY) |

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering ((m->header->flags & BUS_MESSAGE_NO_AUTO_START) ? KDBUS_MSG_FLAGS_NO_AUTO_START : 0);

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering if (well_known) {

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering /* verify_destination_id will usually be 0, which makes the kernel driver only look

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering m->kdbus->dst_id = m->verify_destination_id;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering } else {

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering m->kdbus->dst_id = destination ? unique : KDBUS_DST_ID_BROADCAST;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering }

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering m->kdbus->payload_type = KDBUS_PAYLOAD_DBUS;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering m->kdbus->cookie = (uint64_t) m->header->serial;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering m->kdbus->priority = m->priority;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering if (m->header->flags & BUS_MESSAGE_NO_REPLY_EXPECTED) {

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering m->kdbus->cookie_reply = m->reply_cookie;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering } else {

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering struct timespec now;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering assert_se(clock_gettime(CLOCK_MONOTONIC_COARSE, &now) == 0);

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering m->kdbus->timeout_ns = now.tv_sec * NSEC_PER_SEC + now.tv_nsec +

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering m->timeout * NSEC_PER_USEC;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering }

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering d = m->kdbus->items;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering if (well_known)

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering append_destination(&d, destination, dl);

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering append_payload_vec(&d, m->header, BUS_MESSAGE_BODY_BEGIN(m));

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering MESSAGE_FOREACH_PART(part, i, m) {

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering if (part->is_zero) {

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering /* If this is padding then simply send a

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering append_payload_vec(&d, NULL, part->size);

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering continue;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering }

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering if (part->memfd >= 0 && part->sealed && destination) {

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering /* Try to send a memfd, if the part is

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering append_payload_memfd(&d, part->memfd, part->size);

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering continue;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering }

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering /* Otherwise, let's send a vector to the actual data.

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering r = bus_body_part_map(part);

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering if (r < 0)

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering goto fail;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering append_payload_vec(&d, part->data, part->size);

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering }

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering if (m->kdbus->dst_id == KDBUS_DST_ID_BROADCAST) {

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering struct kdbus_bloom_filter *bloom;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering bloom = append_bloom(&d, m->bus->bloom_size);

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering r = bus_message_setup_bloom(m, bloom);

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering if (r < 0)

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering goto fail;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering }

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering if (m->n_fds > 0)

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering append_fds(&d, m->fds, m->n_fds);

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering m->kdbus->size = (uint8_t*) d - (uint8_t*) m->kdbus;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering assert(m->kdbus->size <= sz);

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering return 0;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poetteringfail:

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering m->poisoned = true;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering return r;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering}

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poetteringstatic void unset_memfds(struct sd_bus_message *m) {

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering struct bus_body_part *part;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering unsigned i;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering assert(m);

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering /* Make sure the memfds are not freed twice */

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering MESSAGE_FOREACH_PART(part, i, m)

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering if (part->memfd >= 0)

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering part->memfd = -1;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering}

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poetteringstatic int bus_kernel_make_message(sd_bus *bus, struct kdbus_msg *k) {

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering sd_bus_message *m = NULL;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering struct kdbus_item *d;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering unsigned n_fds = 0;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering _cleanup_free_ int *fds = NULL;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering struct bus_header *h = NULL;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering size_t total, n_bytes = 0, idx = 0;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering const char *destination = NULL, *seclabel = NULL;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering int r;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering assert(bus);

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering assert(k);

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering assert(k->payload_type == KDBUS_PAYLOAD_DBUS);

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering KDBUS_ITEM_FOREACH(d, k, items) {

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering size_t l;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering l = d->size - offsetof(struct kdbus_item, data);

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering switch (d->type) {

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering case KDBUS_ITEM_PAYLOAD_OFF:

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering if (!h) {

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering h = (struct bus_header *)((uint8_t *)k + d->vec.offset);

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering if (!bus_header_is_complete(h, d->vec.size))

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering return -EBADMSG;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering }

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering n_bytes += d->vec.size;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering break;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering case KDBUS_ITEM_PAYLOAD_MEMFD:

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering if (!h)

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering return -EBADMSG;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering n_bytes += d->memfd.size;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering break;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering case KDBUS_ITEM_FDS: {

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering int *f;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering unsigned j;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering j = l / sizeof(int);

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering f = realloc(fds, sizeof(int) * (n_fds + j));

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering if (!f)

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering return -ENOMEM;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering fds = f;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering memcpy(fds + n_fds, d->fds, sizeof(int) * j);

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering n_fds += j;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering break;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering }

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering case KDBUS_ITEM_SECLABEL:

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering seclabel = d->str;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering break;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering }

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering }

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering if (!h)

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering return -EBADMSG;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering r = bus_header_message_size(h, &total);

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering if (r < 0)

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering return r;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering if (n_bytes != total)

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering return -EBADMSG;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering /* on kdbus we only speak native endian gvariant, never dbus1

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering if (h->version != 2 ||

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering h->endian != BUS_NATIVE_ENDIAN)

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering return -EPROTOTYPE;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering r = bus_message_from_header(bus, h, sizeof(struct bus_header), fds, n_fds, NULL, seclabel, 0, &m);

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering if (r < 0)

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering return r;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering /* The well-known names list is different from the other

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering m->creds.mask |= (SD_BUS_CREDS_UNIQUE_NAME|SD_BUS_CREDS_WELL_KNOWN_NAMES) & bus->creds_mask;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering KDBUS_ITEM_FOREACH(d, k, items) {

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering size_t l;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering l = d->size - offsetof(struct kdbus_item, data);

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering switch (d->type) {

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering case KDBUS_ITEM_PAYLOAD_OFF: {

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering size_t begin_body;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering begin_body = BUS_MESSAGE_BODY_BEGIN(m);

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering if (idx + d->vec.size > begin_body) {

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering struct bus_body_part *part;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering /* Contains body material */

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering part = message_append_part(m);

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering if (!part) {

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering r = -ENOMEM;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering goto fail;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering }

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering /* A -1 offset is NUL padding. */

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering part->is_zero = d->vec.offset == ~0ULL;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

5892a914d173e4b968d2a14fbf717373dee3999aDaniel Mack if (idx >= begin_body) {

5892a914d173e4b968d2a14fbf717373dee3999aDaniel Mack if (!part->is_zero)

5892a914d173e4b968d2a14fbf717373dee3999aDaniel Mack part->data = (uint8_t *)k + d->vec.offset;

5892a914d173e4b968d2a14fbf717373dee3999aDaniel Mack part->size = d->vec.size;

5892a914d173e4b968d2a14fbf717373dee3999aDaniel Mack } else {

5892a914d173e4b968d2a14fbf717373dee3999aDaniel Mack if (!part->is_zero)

5892a914d173e4b968d2a14fbf717373dee3999aDaniel Mack part->data = (uint8_t *)k + d->vec.offset + (begin_body - idx);

5892a914d173e4b968d2a14fbf717373dee3999aDaniel Mack part->size = d->vec.size - (begin_body - idx);

5892a914d173e4b968d2a14fbf717373dee3999aDaniel Mack }

5892a914d173e4b968d2a14fbf717373dee3999aDaniel Mack

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering part->sealed = true;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering }

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering idx += d->vec.size;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering break;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering }

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering case KDBUS_ITEM_PAYLOAD_MEMFD: {

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering struct bus_body_part *part;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering if (idx < BUS_MESSAGE_BODY_BEGIN(m)) {

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering r = -EBADMSG;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering goto fail;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering }

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering part = message_append_part(m);

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering if (!part) {

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering r = -ENOMEM;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering goto fail;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering }

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering part->memfd = d->memfd.fd;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering part->size = d->memfd.size;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering part->sealed = true;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering idx += d->memfd.size;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering break;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering }

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering case KDBUS_ITEM_PIDS:

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering /* The PID starttime/TID might be missing,

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering if (d->pids.pid > 0) {

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering m->creds.pid = (pid_t) d->pids.pid;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering m->creds.mask |= SD_BUS_CREDS_PID & bus->creds_mask;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering }

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering if (d->pids.starttime > 0) {

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering m->creds.pid_starttime = d->pids.starttime / NSEC_PER_USEC;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering m->creds.mask |= SD_BUS_CREDS_PID_STARTTIME & bus->creds_mask;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering }

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering if (d->pids.tid > 0) {

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering m->creds.tid = (pid_t) d->pids.tid;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering m->creds.mask |= SD_BUS_CREDS_TID & bus->creds_mask;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering }

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering break;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering case KDBUS_ITEM_CREDS:

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering /* EUID/SUID/FSUID/EGID/SGID/FSGID might be missing too (see above). */

5892a914d173e4b968d2a14fbf717373dee3999aDaniel Mack

5892a914d173e4b968d2a14fbf717373dee3999aDaniel Mack if ((uid_t) d->creds.uid != (uid_t) -1) {

5892a914d173e4b968d2a14fbf717373dee3999aDaniel Mack m->creds.uid = (uid_t) d->creds.uid;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering m->creds.mask |= SD_BUS_CREDS_UID & bus->creds_mask;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering }

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering if ((uid_t) d->creds.euid != (uid_t) -1) {

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering m->creds.euid = (uid_t) d->creds.euid;

16ac401407959cbc62312e61c2dd76dbc3a0793bLennart Poettering m->creds.mask |= SD_BUS_CREDS_EUID & bus->creds_mask;

16ac401407959cbc62312e61c2dd76dbc3a0793bLennart Poettering }

ff975efb2e88dcd5221a2f0d76c4c87e85b821a8Lennart Poettering

16ac401407959cbc62312e61c2dd76dbc3a0793bLennart Poettering if ((uid_t) d->creds.suid != (uid_t) -1) {

16ac401407959cbc62312e61c2dd76dbc3a0793bLennart Poettering m->creds.suid = (uid_t) d->creds.suid;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering m->creds.mask |= SD_BUS_CREDS_SUID & bus->creds_mask;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering }

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering if ((uid_t) d->creds.fsuid != (uid_t) -1) {

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering m->creds.fsuid = (uid_t) d->creds.fsuid;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering m->creds.mask |= SD_BUS_CREDS_FSUID & bus->creds_mask;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering }

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering if ((gid_t) d->creds.gid != (gid_t) -1) {

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering m->creds.gid = (gid_t) d->creds.gid;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering m->creds.mask |= SD_BUS_CREDS_GID & bus->creds_mask;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering }

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering if ((gid_t) d->creds.egid != (gid_t) -1) {

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering m->creds.egid = (gid_t) d->creds.egid;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering m->creds.mask |= SD_BUS_CREDS_EGID & bus->creds_mask;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering }

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering if ((gid_t) d->creds.sgid != (gid_t) -1) {

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering m->creds.sgid = (gid_t) d->creds.sgid;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering m->creds.mask |= SD_BUS_CREDS_SGID & bus->creds_mask;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering }

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering if ((gid_t) d->creds.fsgid != (gid_t) -1) {

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering m->creds.fsgid = (gid_t) d->creds.fsgid;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering m->creds.mask |= SD_BUS_CREDS_FSGID & bus->creds_mask;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering }

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering break;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering case KDBUS_ITEM_TIMESTAMP:

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering if (bus->attach_flags & KDBUS_ATTACH_TIMESTAMP) {

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering m->realtime = d->timestamp.realtime_ns / NSEC_PER_USEC;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering m->monotonic = d->timestamp.monotonic_ns / NSEC_PER_USEC;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering m->seqnum = d->timestamp.seqnum;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering }

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering break;

5892a914d173e4b968d2a14fbf717373dee3999aDaniel Mack

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering case KDBUS_ITEM_PID_COMM:

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering m->creds.comm = d->str;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering m->creds.mask |= SD_BUS_CREDS_COMM & bus->creds_mask;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering break;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering case KDBUS_ITEM_TID_COMM:

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering m->creds.tid_comm = d->str;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering m->creds.mask |= SD_BUS_CREDS_TID_COMM & bus->creds_mask;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering break;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering case KDBUS_ITEM_EXE:

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering m->creds.exe = d->str;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering m->creds.mask |= SD_BUS_CREDS_EXE & bus->creds_mask;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering break;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering case KDBUS_ITEM_CMDLINE:

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering m->creds.cmdline = d->str;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering m->creds.cmdline_size = l;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering m->creds.mask |= SD_BUS_CREDS_CMDLINE & bus->creds_mask;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering break;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering case KDBUS_ITEM_CGROUP:

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering m->creds.cgroup = d->str;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering m->creds.mask |= (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) & bus->creds_mask;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering r = bus_get_root_path(bus);

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering if (r < 0)

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering goto fail;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering m->creds.cgroup_root = bus->cgroup_root;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering break;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering case KDBUS_ITEM_AUDIT:

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering if ((uint32_t) d->audit.sessionid != (uint32_t) -1) {

5892a914d173e4b968d2a14fbf717373dee3999aDaniel Mack m->creds.audit_session_id = (uint32_t) d->audit.sessionid;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering m->creds.mask |= SD_BUS_CREDS_AUDIT_SESSION_ID & bus->creds_mask;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering }

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering if ((uid_t) d->audit.loginuid != (uid_t) -1) {

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering m->creds.audit_login_uid = (uid_t) d->audit.loginuid;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering m->creds.mask |= SD_BUS_CREDS_AUDIT_LOGIN_UID & bus->creds_mask;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering }

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering break;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering case KDBUS_ITEM_CAPS:

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering m->creds.capability = (uint8_t *) d->caps.caps;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering m->creds.capability_size = d->size - offsetof(struct kdbus_item, caps.caps);

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering m->creds.mask |= (SD_BUS_CREDS_EFFECTIVE_CAPS|SD_BUS_CREDS_PERMITTED_CAPS|SD_BUS_CREDS_INHERITABLE_CAPS|SD_BUS_CREDS_BOUNDING_CAPS) & bus->creds_mask;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering break;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering case KDBUS_ITEM_DST_NAME:

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering if (!service_name_is_valid(d->str)) {

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering r = -EBADMSG;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering goto fail;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering }

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering destination = d->str;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering break;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering case KDBUS_ITEM_OWNED_NAME:

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering if (!service_name_is_valid(d->name.name)) {

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering r = -EBADMSG;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering goto fail;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering }

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering if (bus->creds_mask & SD_BUS_CREDS_WELL_KNOWN_NAMES) {

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering r = strv_extend(&m->creds.well_known_names, d->name.name);

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering if (r < 0)

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering goto fail;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering m->creds.mask |= SD_BUS_CREDS_WELL_KNOWN_NAMES;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering }

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering break;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering case KDBUS_ITEM_CONN_DESCRIPTION:

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering m->creds.description = d->str;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering m->creds.mask |= SD_BUS_CREDS_DESCRIPTION & bus->creds_mask;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering break;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering case KDBUS_ITEM_AUXGROUPS:

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering if (bus->creds_mask & SD_BUS_CREDS_SUPPLEMENTARY_GIDS) {

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering size_t i, n;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering uid_t *u;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering n = (d->size - offsetof(struct kdbus_item, data32)) / sizeof(uint32_t);

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering u = new(uid_t, n);

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering if (!u) {

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering r = -ENOMEM;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering goto fail;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering }

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering for (i = 0; i < n; i++)

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering u[i] = (uid_t) d->data32[i];

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering m->creds.supplementary_gids = u;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering m->creds.n_supplementary_gids = n;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering m->creds.mask |= SD_BUS_CREDS_SUPPLEMENTARY_GIDS;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering }

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering break;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering case KDBUS_ITEM_FDS:

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering case KDBUS_ITEM_SECLABEL:

03e334a1c7dc8c20c38902aa039440763acc9b17Lennart Poettering break;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering default:

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering log_debug("Got unknown field from kernel %llu", d->type);

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering }

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering }

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering r = bus_message_parse_fields(m);

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering if (r < 0)

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering goto fail;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering /* Override information from the user header with data from the kernel */

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering if (k->src_id == KDBUS_SRC_ID_KERNEL)

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering m->sender = m->creds.unique_name = (char*) "org.freedesktop.DBus";

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering else {

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering snprintf(m->sender_buffer, sizeof(m->sender_buffer), ":1.%llu", (unsigned long long) k->src_id);

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering m->sender = m->creds.unique_name = m->sender_buffer;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering }

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering if (destination)

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering m->destination = destination;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering else if (k->dst_id == KDBUS_DST_ID_BROADCAST)

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering m->destination = NULL;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering else if (k->dst_id == KDBUS_DST_ID_NAME)

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering m->destination = bus->unique_name; /* fill in unique name if the well-known name is missing */

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering else {

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering snprintf(m->destination_buffer, sizeof(m->destination_buffer), ":1.%llu", (unsigned long long) k->dst_id);

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering m->destination = m->destination_buffer;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering }

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering /* We take possession of the kmsg struct now */

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering m->kdbus = k;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering m->release_kdbus = true;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering m->free_fds = true;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering fds = NULL;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering bus->rqueue[bus->rqueue_size++] = m;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering return 1;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poetteringfail:

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering unset_memfds(m);

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering sd_bus_message_unref(m);

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering return r;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering}

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poetteringint bus_kernel_take_fd(sd_bus *b) {

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering struct kdbus_cmd_hello *hello;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering struct kdbus_item *item;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering _cleanup_free_ char *g = NULL;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering const char *name;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering size_t l = 0, m = 0, sz;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering int r;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering assert(b);

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering if (b->is_server)

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering return -EINVAL;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering b->use_memfd = 1;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering if (b->description) {

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering g = bus_label_escape(b->description);

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering if (!g)

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering return -ENOMEM;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering name = g;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering } else {

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering char pr[17] = {};

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering /* If no name is explicitly set, we'll include a hint

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering assert_se(prctl(PR_GET_NAME, (unsigned long) pr) >= 0);

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering if (isempty(pr)) {

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering name = b->is_system ? "sd-system" :

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering b->is_user ? "sd-user" : "sd";

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering } else {

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering _cleanup_free_ char *e = NULL;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering e = bus_label_escape(pr);

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering if (!e)

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering return -ENOMEM;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering g = strappend(b->is_system ? "sd-system-" :

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering b->is_user ? "sd-user-" : "sd-",

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering e);

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering if (!g)

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering return -ENOMEM;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering name = g;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering }

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering b->description = bus_label_unescape(name);

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering if (!b->description)

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering return -ENOMEM;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering }

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering m = strlen(name);

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering sz = ALIGN8(offsetof(struct kdbus_cmd_hello, items)) +

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering ALIGN8(offsetof(struct kdbus_item, str) + m + 1);

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering if (b->fake_creds_valid)

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering sz += ALIGN8(offsetof(struct kdbus_item, creds) + sizeof(struct kdbus_creds));

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering if (b->fake_pids_valid)

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering sz += ALIGN8(offsetof(struct kdbus_item, pids) + sizeof(struct kdbus_pids));

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering if (b->fake_label) {

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering l = strlen(b->fake_label);

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering sz += ALIGN8(offsetof(struct kdbus_item, str) + l + 1);

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering }

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering hello = alloca0_align(sz, 8);

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering hello->size = sz;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering hello->flags = b->hello_flags;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering hello->attach_flags_send = _KDBUS_ATTACH_ANY;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering hello->attach_flags_recv = b->attach_flags;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering hello->pool_size = KDBUS_POOL_SIZE;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering item = hello->items;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering item->size = offsetof(struct kdbus_item, str) + m + 1;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering item->type = KDBUS_ITEM_CONN_DESCRIPTION;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering memcpy(item->str, name, m + 1);

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering item = KDBUS_ITEM_NEXT(item);

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering if (b->fake_creds_valid) {

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering item->size = offsetof(struct kdbus_item, creds) + sizeof(struct kdbus_creds);

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering item->type = KDBUS_ITEM_CREDS;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering item->creds = b->fake_creds;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering item = KDBUS_ITEM_NEXT(item);

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering }

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering if (b->fake_pids_valid) {

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering item->size = offsetof(struct kdbus_item, pids) + sizeof(struct kdbus_pids);

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering item->type = KDBUS_ITEM_PIDS;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering item->pids = b->fake_pids;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering item = KDBUS_ITEM_NEXT(item);

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering }

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering if (b->fake_label) {

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering item->size = offsetof(struct kdbus_item, str) + l + 1;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering item->type = KDBUS_ITEM_SECLABEL;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering memcpy(item->str, b->fake_label, l+1);

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering }

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering r = ioctl(b->input_fd, KDBUS_CMD_HELLO, hello);

2f671520ebade4877cbf6aca3572a5f8c4e1871dLennart Poettering if (r < 0)

2f671520ebade4877cbf6aca3572a5f8c4e1871dLennart Poettering return -errno;

2f671520ebade4877cbf6aca3572a5f8c4e1871dLennart Poettering

2f671520ebade4877cbf6aca3572a5f8c4e1871dLennart Poettering if (!b->kdbus_buffer) {

2f671520ebade4877cbf6aca3572a5f8c4e1871dLennart Poettering b->kdbus_buffer = mmap(NULL, KDBUS_POOL_SIZE, PROT_READ, MAP_SHARED, b->input_fd, 0);

2f671520ebade4877cbf6aca3572a5f8c4e1871dLennart Poettering if (b->kdbus_buffer == MAP_FAILED) {

2f671520ebade4877cbf6aca3572a5f8c4e1871dLennart Poettering b->kdbus_buffer = NULL;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering return -errno;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering }

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering }

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering /* The higher 32bit of the bus_flags fields are considered

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering if (hello->bus_flags > 0xFFFFFFFFULL)

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering return -ENOTSUP;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering if (!bloom_validate_parameters((size_t) hello->bloom.size, (unsigned) hello->bloom.n_hash))

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering return -ENOTSUP;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering b->bloom_size = (size_t) hello->bloom.size;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering b->bloom_n_hash = (unsigned) hello->bloom.n_hash;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering if (asprintf(&b->unique_name, ":1.%llu", (unsigned long long) hello->id) < 0)

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering return -ENOMEM;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering b->unique_id = hello->id;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering b->is_kernel = true;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering b->bus_client = true;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering b->can_fds = !!(hello->flags & KDBUS_HELLO_ACCEPT_FD);

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering b->message_version = 2;

5892a914d173e4b968d2a14fbf717373dee3999aDaniel Mack b->message_endian = BUS_NATIVE_ENDIAN;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering /* the kernel told us the UUID of the underlying bus */

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering memcpy(b->server_id.bytes, hello->id128, sizeof(b->server_id.bytes));

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering return bus_start_running(b);

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering}

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poetteringint bus_kernel_connect(sd_bus *b) {

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering assert(b);

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering assert(b->input_fd < 0);

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering assert(b->output_fd < 0);

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering assert(b->kernel);

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering if (b->is_server)

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering return -EINVAL;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

700ff4d97311902a440109a2c081731ab6ae8a20Lennart Poettering b->input_fd = open(b->kernel, O_RDWR|O_NOCTTY|O_CLOEXEC);

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering if (b->input_fd < 0)

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering return -errno;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering b->output_fd = b->input_fd;

54d76c92868838e17d6aad0a3bb0cc7a5b11e35fDaniel Mack

54d76c92868838e17d6aad0a3bb0cc7a5b11e35fDaniel Mack return bus_kernel_take_fd(b);

54d76c92868838e17d6aad0a3bb0cc7a5b11e35fDaniel Mack}

54d76c92868838e17d6aad0a3bb0cc7a5b11e35fDaniel Mack

54d76c92868838e17d6aad0a3bb0cc7a5b11e35fDaniel Mackstatic void close_kdbus_msg(sd_bus *bus, struct kdbus_msg *k) {

54d76c92868838e17d6aad0a3bb0cc7a5b11e35fDaniel Mack struct kdbus_cmd_free cmd = {};

54d76c92868838e17d6aad0a3bb0cc7a5b11e35fDaniel Mack struct kdbus_item *d;

54d76c92868838e17d6aad0a3bb0cc7a5b11e35fDaniel Mack

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering assert(bus);

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering assert(k);

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering cmd.offset = (uint8_t *)k - (uint8_t *)bus->kdbus_buffer;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering KDBUS_ITEM_FOREACH(d, k, items) {

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering if (d->type == KDBUS_ITEM_FDS)

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering close_many(d->fds, (d->size - offsetof(struct kdbus_item, fds)) / sizeof(int));

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering else if (d->type == KDBUS_ITEM_PAYLOAD_MEMFD)

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering safe_close(d->memfd.fd);

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering }

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering (void) ioctl(bus->input_fd, KDBUS_CMD_FREE, &cmd);

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering}

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poetteringint bus_kernel_write_message(sd_bus *bus, sd_bus_message *m, bool hint_sync_call) {

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering int r;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering assert(bus);

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering assert(m);

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering assert(bus->state == BUS_RUNNING);

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering /* If we can't deliver, we want room for the error message */

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering r = bus_rqueue_make_room(bus);

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering if (r < 0)

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering return r;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering r = bus_message_setup_kmsg(bus, m);

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering if (r < 0)

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering return r;

a4152e3fe28b53b8919cc404dd7eca7ead1bf9bdLennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering /* If this is a synchronous method call, then let's tell the

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering if (hint_sync_call)

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering m->kdbus->flags |= KDBUS_MSG_FLAGS_EXPECT_REPLY|KDBUS_MSG_FLAGS_SYNC_REPLY;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering r = ioctl(bus->output_fd, KDBUS_CMD_MSG_SEND, m->kdbus);

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering if (r < 0) {

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering sd_bus_message *reply;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering if (errno == EAGAIN || errno == EINTR)

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering return 0;

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering else if (errno == ENXIO || errno == ESRCH) {

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering /* ENXIO: unique name not known

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering

e821075a23fdfa3ca7738fc30bb2d4c430fe10c0Lennart Poettering if (m->header->type == SD_BUS_MESSAGE_METHOD_CALL)

sd_bus_error_setf(&error, SD_BUS_ERROR_SERVICE_UNKNOWN, "Destination %s not known", m->destination);

else {

log_debug("Could not deliver message to %s as destination is not known. Ignoring.", m->destination);

return 0;

}

} else if (errno == EADDRNOTAVAIL) {

/* EADDRNOTAVAIL: activation is possible, but turned off in request flags */

if (m->header->type == SD_BUS_MESSAGE_METHOD_CALL)

sd_bus_error_setf(&error, SD_BUS_ERROR_SERVICE_UNKNOWN, "Activation of %s not requested", m->destination);

else {

log_debug("Could not deliver message to %s as destination is not activated. Ignoring.", m->destination);

return 0;

}

} else

return -errno;

r = bus_message_new_synthetic_error(

bus,

BUS_MESSAGE_COOKIE(m),

&error,

&reply);

if (r < 0)

return r;

r = bus_seal_synthetic_message(bus, reply);

if (r < 0)

return r;

bus->rqueue[bus->rqueue_size++] = reply;

} else if (hint_sync_call) {

struct kdbus_msg *k;

k = (struct kdbus_msg *)((uint8_t *)bus->kdbus_buffer + m->kdbus->offset_reply);

assert(k);

if (k->payload_type == KDBUS_PAYLOAD_DBUS) {

r = bus_kernel_make_message(bus, k);

if (r < 0) {

close_kdbus_msg(bus, k);

/* Anybody can send us invalid messages, let's just drop them. */

if (r == -EBADMSG || r == -EPROTOTYPE)

log_debug("Ignoring invalid message: %s", strerror(-r));

else

return r;

}

} else {

log_debug("Ignoring message with unknown payload type %llu.", (unsigned long long) k->payload_type);

close_kdbus_msg(bus, k);

}

}

return 1;

}

static int push_name_owner_changed(sd_bus *bus, const char *name, const char *old_owner, const char *new_owner) {

_cleanup_bus_message_unref_ sd_bus_message *m = NULL;

int r;

assert(bus);

r = sd_bus_message_new_signal(

bus,

&m,

"/org/freedesktop/DBus",

"org.freedesktop.DBus",

"NameOwnerChanged");

if (r < 0)

return r;

r = sd_bus_message_append(m, "sss", name, old_owner, new_owner);

if (r < 0)

return r;

m->sender = "org.freedesktop.DBus";

r = bus_seal_synthetic_message(bus, m);

if (r < 0)

return r;

bus->rqueue[bus->rqueue_size++] = m;

m = NULL;

return 1;

}

static int translate_name_change(sd_bus *bus, struct kdbus_msg *k, struct kdbus_item *d) {

char new_owner[UNIQUE_NAME_MAX], old_owner[UNIQUE_NAME_MAX];

assert(bus);

assert(k);

assert(d);

if (d->type == KDBUS_ITEM_NAME_ADD || (d->name_change.old_id.flags & (KDBUS_NAME_IN_QUEUE|KDBUS_NAME_ACTIVATOR)))

old_owner[0] = 0;

else

sprintf(old_owner, ":1.%llu", (unsigned long long) d->name_change.old_id.id);

if (d->type == KDBUS_ITEM_NAME_REMOVE || (d->name_change.new_id.flags & (KDBUS_NAME_IN_QUEUE|KDBUS_NAME_ACTIVATOR))) {

if (isempty(old_owner))

return 0;

new_owner[0] = 0;

} else

sprintf(new_owner, ":1.%llu", (unsigned long long) d->name_change.new_id.id);

return push_name_owner_changed(bus, d->name_change.name, old_owner, new_owner);

}

static int translate_id_change(sd_bus *bus, struct kdbus_msg *k, struct kdbus_item *d) {

char owner[UNIQUE_NAME_MAX];

assert(bus);

assert(k);

assert(d);

sprintf(owner, ":1.%llu", d->id_change.id);

return push_name_owner_changed(

bus, owner,

d->type == KDBUS_ITEM_ID_ADD ? NULL : owner,

d->type == KDBUS_ITEM_ID_ADD ? owner : NULL);

}

static int translate_reply(sd_bus *bus, struct kdbus_msg *k, struct kdbus_item *d) {

_cleanup_bus_message_unref_ sd_bus_message *m = NULL;

int r;

assert(bus);

assert(k);

assert(d);

r = bus_message_new_synthetic_error(

bus,

k->cookie_reply,

d->type == KDBUS_ITEM_REPLY_TIMEOUT ?

&SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_NO_REPLY, "Method call timed out") :

&SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_NO_REPLY, "Method call peer died"),

&m);

if (r < 0)

return r;

m->sender = "org.freedesktop.DBus";

r = bus_seal_synthetic_message(bus, m);

if (r < 0)

return r;

bus->rqueue[bus->rqueue_size++] = m;

m = NULL;

return 1;

}

static int bus_kernel_translate_message(sd_bus *bus, struct kdbus_msg *k) {

struct kdbus_item *d, *found = NULL;

static int (* const translate[])(sd_bus *bus, struct kdbus_msg *k, struct kdbus_item *d) = {

[KDBUS_ITEM_NAME_ADD - _KDBUS_ITEM_KERNEL_BASE] = translate_name_change,

[KDBUS_ITEM_NAME_REMOVE - _KDBUS_ITEM_KERNEL_BASE] = translate_name_change,

[KDBUS_ITEM_NAME_CHANGE - _KDBUS_ITEM_KERNEL_BASE] = translate_name_change,

[KDBUS_ITEM_ID_ADD - _KDBUS_ITEM_KERNEL_BASE] = translate_id_change,

[KDBUS_ITEM_ID_REMOVE - _KDBUS_ITEM_KERNEL_BASE] = translate_id_change,

[KDBUS_ITEM_REPLY_TIMEOUT - _KDBUS_ITEM_KERNEL_BASE] = translate_reply,

[KDBUS_ITEM_REPLY_DEAD - _KDBUS_ITEM_KERNEL_BASE] = translate_reply,

};

assert(bus);

assert(k);

assert(k->payload_type == KDBUS_PAYLOAD_KERNEL);

KDBUS_ITEM_FOREACH(d, k, items) {

if (d->type >= _KDBUS_ITEM_KERNEL_BASE && d->type < _KDBUS_ITEM_KERNEL_BASE + ELEMENTSOF(translate)) {

if (found)

return -EBADMSG;

found = d;

} else

log_debug("Got unknown field from kernel %llu", d->type);

}

if (!found) {

log_debug("Didn't find a kernel message to translate.");

return 0;

}

return translate[found->type - _KDBUS_ITEM_KERNEL_BASE](bus, k, found);

}

int bus_kernel_read_message(sd_bus *bus, bool hint_priority, int64_t priority) {

struct kdbus_cmd_recv recv = {};

struct kdbus_msg *k;

int r;

assert(bus);

r = bus_rqueue_make_room(bus);

if (r < 0)

return r;

if (hint_priority) {

recv.flags |= KDBUS_RECV_USE_PRIORITY;

recv.priority = priority;

}

r = ioctl(bus->input_fd, KDBUS_CMD_MSG_RECV, &recv);

if (r < 0) {

if (errno == EAGAIN)

return 0;

if (errno == EOVERFLOW) {

log_debug("%s: kdbus reports %" PRIu64 " dropped broadcast messages, ignoring.", strna(bus->description), (uint64_t) recv.dropped_msgs);

return 0;

}

return -errno;

}

k = (struct kdbus_msg *)((uint8_t *)bus->kdbus_buffer + recv.offset);

if (k->payload_type == KDBUS_PAYLOAD_DBUS) {

r = bus_kernel_make_message(bus, k);

/* Anybody can send us invalid messages, let's just drop them. */

if (r == -EBADMSG || r == -EPROTOTYPE) {

log_debug("Ignoring invalid message: %s", strerror(-r));

r = 0;

}

} else if (k->payload_type == KDBUS_PAYLOAD_KERNEL)

r = bus_kernel_translate_message(bus, k);

else {

log_debug("Ignoring message with unknown payload type %llu.", (unsigned long long) k->payload_type);

r = 0;

}

if (r <= 0)

close_kdbus_msg(bus, k);

return r < 0 ? r : 1;

}

int bus_kernel_pop_memfd(sd_bus *bus, void **address, size_t *mapped, size_t *allocated) {

struct memfd_cache *c;

int fd;

assert(address);

assert(mapped);

assert(allocated);

if (!bus || !bus->is_kernel)

return -ENOTSUP;

assert_se(pthread_mutex_lock(&bus->memfd_cache_mutex) >= 0);

if (bus->n_memfd_cache <= 0) {

int r;

assert_se(pthread_mutex_unlock(&bus->memfd_cache_mutex) >= 0);

r = memfd_new(bus->description);

if (r < 0)

return r;

*address = NULL;

*mapped = 0;

*allocated = 0;

return r;

}

c = &bus->memfd_cache[--bus->n_memfd_cache];

assert(c->fd >= 0);

assert(c->mapped == 0 || c->address);

*address = c->address;

*mapped = c->mapped;

*allocated = c->allocated;

fd = c->fd;

assert_se(pthread_mutex_unlock(&bus->memfd_cache_mutex) >= 0);

return fd;

}

static void close_and_munmap(int fd, void *address, size_t size) {

if (size > 0)

assert_se(munmap(address, PAGE_ALIGN(size)) >= 0);

safe_close(fd);

}

void bus_kernel_push_memfd(sd_bus *bus, int fd, void *address, size_t mapped, size_t allocated) {

struct memfd_cache *c;

uint64_t max_mapped = PAGE_ALIGN(MEMFD_CACHE_ITEM_SIZE_MAX);

assert(fd >= 0);

assert(mapped == 0 || address);

if (!bus || !bus->is_kernel) {

close_and_munmap(fd, address, mapped);

return;

}

assert_se(pthread_mutex_lock(&bus->memfd_cache_mutex) >= 0);

if (bus->n_memfd_cache >= ELEMENTSOF(bus->memfd_cache)) {

assert_se(pthread_mutex_unlock(&bus->memfd_cache_mutex) >= 0);

close_and_munmap(fd, address, mapped);

return;

}

c = &bus->memfd_cache[bus->n_memfd_cache++];

c->fd = fd;

c->address = address;

/* If overly long, let's return a bit to the OS */

if (mapped > max_mapped) {

assert_se(memfd_set_size(fd, max_mapped) >= 0);

assert_se(munmap((uint8_t*) address + max_mapped, PAGE_ALIGN(mapped - max_mapped)) >= 0);

c->mapped = c->allocated = max_mapped;

} else {

c->mapped = mapped;

c->allocated = allocated;

}

assert_se(pthread_mutex_unlock(&bus->memfd_cache_mutex) >= 0);

}

void bus_kernel_flush_memfd(sd_bus *b) {

unsigned i;

assert(b);

for (i = 0; i < b->n_memfd_cache; i++)

close_and_munmap(b->memfd_cache[i].fd, b->memfd_cache[i].address, b->memfd_cache[i].mapped);

}

uint64_t request_name_flags_to_kdbus(uint64_t flags) {

uint64_t f = 0;

if (flags & SD_BUS_NAME_ALLOW_REPLACEMENT)

f |= KDBUS_NAME_ALLOW_REPLACEMENT;

if (flags & SD_BUS_NAME_REPLACE_EXISTING)

f |= KDBUS_NAME_REPLACE_EXISTING;

if (flags & SD_BUS_NAME_QUEUE)

f |= KDBUS_NAME_QUEUE;

return f;

}

uint64_t attach_flags_to_kdbus(uint64_t mask) {

uint64_t m = 0;

if (mask & (SD_BUS_CREDS_UID|SD_BUS_CREDS_EUID|SD_BUS_CREDS_SUID|SD_BUS_CREDS_FSUID|

SD_BUS_CREDS_GID|SD_BUS_CREDS_EGID|SD_BUS_CREDS_SGID|SD_BUS_CREDS_FSGID))

m |= KDBUS_ATTACH_CREDS;

if (mask & (SD_BUS_CREDS_PID|SD_BUS_CREDS_PID_STARTTIME|SD_BUS_CREDS_TID))