#include "bus-protocol.h"
static int bus_poll(sd_bus *bus, bool need_more, uint64_t timeout_usec);
+static int attach_io_events(sd_bus *b);
+static void detach_io_events(sd_bus *b);
static void bus_close_fds(sd_bus *b) {
assert(b);
+ detach_io_events(b);
+
if (b->input_fd >= 0)
close_nointr_nofail(b->input_fd);
free(b->wqueue);
b->rqueue = b->wqueue = NULL;
+ b->rqueue_allocated = b->wqueue_allocated = 0;
b->rqueue_size = b->wqueue_size = 0;
}
/* We guarantee that wqueue always has space for at least one
* entry */
- r->wqueue = new(sd_bus_message*, 1);
- if (!r->wqueue) {
+ if (!GREEDY_REALLOC(r->wqueue, r->wqueue_allocated, 1)) {
free(r);
return -ENOMEM;
}
}
static int parse_address_key(const char **p, const char *key, char **value) {
- size_t l, n = 0;
+ size_t l, n = 0, allocated = 0;
const char *a;
char *r = NULL;
a = *p;
while (*a != ';' && *a != ',' && *a != 0) {
- char c, *t;
+ char c;
if (*a == '%') {
int x, y;
a++;
}
- t = realloc(r, n + 2);
- if (!t) {
- free(r);
+ if (!GREEDY_REALLOC(r, allocated, n + 2))
return -ENOMEM;
- }
- r = t;
r[n++] = c;
}
char *path = NULL;
unsigned n_argv = 0, j;
char **argv = NULL;
+ size_t allocated = 0;
int r;
assert(b);
(*p) ++;
if (ul >= n_argv) {
- char **x;
-
- x = realloc(argv, sizeof(char*) * (ul + 2));
- if (!x) {
+ if (!GREEDY_REALLOC0(argv, allocated, ul + 2)) {
r = -ENOMEM;
goto fail;
}
- memset(x + n_argv, 0, sizeof(char*) * (ul - n_argv + 2));
-
- argv = x;
n_argv = ul + 1;
}
return 0;
}
-static int parse_container_address(sd_bus *b, const char **p, char **guid) {
+static int parse_container_unix_address(sd_bus *b, const char **p, char **guid) {
_cleanup_free_ char *machine = NULL;
int r;
return 0;
}
+static int parse_container_kernel_address(sd_bus *b, const char **p, char **guid) {
+ _cleanup_free_ char *machine = NULL;
+ int r;
+
+ assert(b);
+ assert(p);
+ assert(*p);
+ assert(guid);
+
+ while (**p != 0 && **p != ';') {
+ r = parse_address_key(p, "guid", guid);
+ if (r < 0)
+ return r;
+ else if (r > 0)
+ continue;
+
+ r = parse_address_key(p, "machine", &machine);
+ if (r < 0)
+ return r;
+ else if (r > 0)
+ continue;
+
+ skip_address_key(p);
+ }
+
+ if (!machine)
+ return -EINVAL;
+
+ if (!filename_is_safe(machine))
+ return -EINVAL;
+
+ free(b->machine);
+ b->machine = machine;
+ machine = NULL;
+
+ free(b->kernel);
+ b->kernel = strdup("/dev/kdbus/0-system/bus");
+ if (!b->kernel)
+ return -ENOMEM;
+
+ return 0;
+}
+
static void bus_reset_parsed_address(sd_bus *b) {
assert(b);
return r;
break;
- } else if (startswith(a, "x-container:")) {
+ } else if (startswith(a, "x-container-unix:")) {
- a += 12;
- r = parse_container_address(b, &a, &guid);
+ a += 17;
+ r = parse_container_unix_address(b, &a, &guid);
+ if (r < 0)
+ return r;
+
+ break;
+ } else if (startswith(a, "x-container-kernel:")) {
+
+ a += 19;
+ r = parse_container_kernel_address(b, &a, &guid);
if (r < 0)
return r;
assert(b);
for (;;) {
- sd_bus_close(b);
+ bool skipped = false;
- if (b->exec_path) {
+ bus_close_fds(b);
+ if (b->exec_path)
r = bus_socket_exec(b);
- if (r >= 0)
- return r;
-
- b->last_connect_error = -r;
- } else if (b->kernel) {
-
+ else if (b->machine && b->kernel)
+ r = bus_container_connect_kernel(b);
+ else if (b->machine && b->sockaddr.sa.sa_family != AF_UNSPEC)
+ r = bus_container_connect_socket(b);
+ else if (b->kernel)
r = bus_kernel_connect(b);
- if (r >= 0)
- return r;
-
- b->last_connect_error = -r;
-
- } else if (b->machine) {
-
- r = bus_container_connect(b);
- if (r >= 0)
- return r;
-
- b->last_connect_error = -r;
-
- } else if (b->sockaddr.sa.sa_family != AF_UNSPEC) {
-
+ else if (b->sockaddr.sa.sa_family != AF_UNSPEC)
r = bus_socket_connect(b);
- if (r >= 0)
- return r;
+ else
+ skipped = true;
+
+ if (!skipped) {
+ if (r >= 0) {
+ r = attach_io_events(b);
+ if (r >= 0)
+ return r;
+ }
b->last_connect_error = -r;
}
return -ENOMEM;
#ifdef ENABLE_KDBUS
- p = strjoin("kernel:path=/dev/kdbus/ns/machine-", e, "/0-system/bus;x-container:machine=", e, NULL);
+ p = strjoin("x-container-kernel:machine=", e, ";x-container-unix:machine=", e, NULL);
#else
- p = strjoin("x-container:machine=", e, NULL);
+ p = strjoin("x-container-unix:machine=", e, NULL);
#endif
if (!p)
return -ENOMEM;
return 0;
}
-static int bus_seal_message(sd_bus *b, sd_bus_message *m) {
+static int bus_seal_message(sd_bus *b, sd_bus_message *m, usec_t timeout) {
assert(b);
assert(m);
- if (b->message_version != 0 &&
- m->header->version != b->message_version)
- return -EPERM;
-
- if (b->message_endian != 0 &&
- m->header->endian != b->message_endian)
- return -EPERM;
-
if (m->sealed) {
/* If we copy the same message to multiple
* destinations, avoid using the same serial
return 0;
}
- return bus_message_seal(m, ++b->serial);
+ if (timeout == 0)
+ timeout = BUS_DEFAULT_TIMEOUT;
+
+ return bus_message_seal(m, ++b->serial, timeout);
+}
+
+static int bus_remarshal_message(sd_bus *b, sd_bus_message **m) {
+ assert(b);
+
+ /* Do packet version and endianess already match? */
+ if ((b->message_version == 0 || b->message_version == (*m)->header->version) &&
+ (b->message_endian == 0 || b->message_endian == (*m)->header->endian))
+ return 0;
+
+ /* No? Then remarshal! */
+ return bus_message_remarshal(b, m);
}
int bus_seal_synthetic_message(sd_bus *b, sd_bus_message *m) {
* than (uint64_t) -1 since dbus1 only had 32bit identifiers,
* even though kdbus can do 64bit. */
- return bus_message_seal(m, 0xFFFFFFFFULL);
+ return bus_message_seal(m, 0xFFFFFFFFULL, 0);
}
static int bus_write_message(sd_bus *bus, sd_bus_message *message, size_t *idx) {
}
int bus_rqueue_make_room(sd_bus *bus) {
- sd_bus_message **q;
- unsigned x;
-
- x = bus->rqueue_size + 1;
-
- if (bus->rqueue_allocated >= x)
- return 0;
+ assert(bus);
- if (x > BUS_RQUEUE_MAX)
+ if (bus->rqueue_size >= BUS_RQUEUE_MAX)
return -ENOBUFS;
- q = realloc(bus->rqueue, x * sizeof(sd_bus_message*));
- if (!q)
+ if (!GREEDY_REALLOC(bus->rqueue, bus->rqueue_allocated, bus->rqueue_size + 1))
return -ENOMEM;
- bus->rqueue = q;
- bus->rqueue_allocated = x;
-
return 0;
}
}
}
-_public_ int sd_bus_send(sd_bus *bus, sd_bus_message *m, uint64_t *serial) {
+_public_ int sd_bus_send(sd_bus *bus, sd_bus_message *_m, uint64_t *serial) {
+ _cleanup_bus_message_unref_ sd_bus_message *m = sd_bus_message_ref(_m);
int r;
assert_return(bus, -EINVAL);
if (!serial && !m->sealed)
m->header->flags |= BUS_MESSAGE_NO_REPLY_EXPECTED;
- r = bus_seal_message(bus, m);
+ r = bus_seal_message(bus, m, 0);
+ if (r < 0)
+ return r;
+
+ /* Remarshall if we have to. This will possible unref the
+ * message and place a replacement in m */
+ r = bus_remarshal_message(bus, &m);
if (r < 0)
return r;
bus->windex = idx;
}
} else {
- sd_bus_message **q;
-
/* Just append it to the queue. */
if (bus->wqueue_size >= BUS_WQUEUE_MAX)
return -ENOBUFS;
- q = realloc(bus->wqueue, sizeof(sd_bus_message*) * (bus->wqueue_size + 1));
- if (!q)
+ if (!GREEDY_REALLOC(bus->wqueue, bus->wqueue_allocated, bus->wqueue_size + 1))
return -ENOMEM;
- bus->wqueue = q;
- q[bus->wqueue_size ++] = sd_bus_message_ref(m);
+ bus->wqueue[bus->wqueue_size ++] = sd_bus_message_ref(m);
}
if (serial)
if (usec == (uint64_t) -1)
return 0;
- if (usec == 0)
- usec = BUS_DEFAULT_TIMEOUT;
-
return now(CLOCK_MONOTONIC) + usec;
}
_public_ int sd_bus_call_async(
sd_bus *bus,
- sd_bus_message *m,
+ sd_bus_message *_m,
sd_bus_message_handler_t callback,
void *userdata,
uint64_t usec,
uint64_t *serial) {
+ _cleanup_bus_message_unref_ sd_bus_message *m = sd_bus_message_ref(_m);
struct reply_callback *c;
int r;
if (r < 0)
return r;
- if (usec != (uint64_t) -1) {
- r = prioq_ensure_allocated(&bus->reply_callbacks_prioq, timeout_compare);
- if (r < 0)
- return r;
- }
+ r = prioq_ensure_allocated(&bus->reply_callbacks_prioq, timeout_compare);
+ if (r < 0)
+ return r;
+
+ r = bus_seal_message(bus, m, usec);
+ if (r < 0)
+ return r;
- r = bus_seal_message(bus, m);
+ r = bus_remarshal_message(bus, &m);
if (r < 0)
return r;
c->callback = callback;
c->userdata = userdata;
c->serial = BUS_MESSAGE_SERIAL(m);
- c->timeout = calc_elapse(usec);
+ c->timeout = calc_elapse(m->timeout);
r = hashmap_put(bus->reply_callbacks, &c->serial, c);
if (r < 0) {
_public_ int sd_bus_call(
sd_bus *bus,
- sd_bus_message *m,
+ sd_bus_message *_m,
uint64_t usec,
sd_bus_error *error,
sd_bus_message **reply) {
+ _cleanup_bus_message_unref_ sd_bus_message *m = sd_bus_message_ref(_m);
usec_t timeout;
uint64_t serial;
unsigned i;
i = bus->rqueue_size;
+ r = bus_seal_message(bus, m, usec);
+ if (r < 0)
+ return r;
+
+ r = bus_remarshal_message(bus, &m);
+ if (r < 0)
+ return r;
+
r = sd_bus_send(bus, m, &serial);
if (r < 0)
return r;
- timeout = calc_elapse(usec);
+ timeout = calc_elapse(m->timeout);
for (;;) {
usec_t left;
switch (bus->state) {
case BUS_UNSET:
- case BUS_CLOSED:
return -ENOTCONN;
+ case BUS_CLOSED:
+ return -ECONNRESET;
+
case BUS_OPENING:
r = bus_socket_process_opening(bus);
if (r == -ECONNRESET || r == -EPIPE || r == -ESHUTDOWN) {
return 1;
}
+static int attach_io_events(sd_bus *bus) {
+ int r;
+
+ assert(bus);
+
+ if (bus->input_fd < 0)
+ return 0;
+
+ if (!bus->event)
+ return 0;
+
+ if (!bus->input_io_event_source) {
+ r = sd_event_add_io(bus->event, bus->input_fd, 0, io_callback, bus, &bus->input_io_event_source);
+ if (r < 0)
+ return r;
+
+ r = sd_event_source_set_prepare(bus->input_io_event_source, prepare_callback);
+ if (r < 0)
+ return r;
+
+ r = sd_event_source_set_priority(bus->input_io_event_source, bus->event_priority);
+ } else
+ r = sd_event_source_set_io_fd(bus->input_io_event_source, bus->input_fd);
+
+ if (r < 0)
+ return r;
+
+ if (bus->output_fd != bus->input_fd) {
+ assert(bus->output_fd >= 0);
+
+ if (!bus->output_io_event_source) {
+ r = sd_event_add_io(bus->event, bus->output_fd, 0, io_callback, bus, &bus->output_io_event_source);
+ if (r < 0)
+ return r;
+
+ r = sd_event_source_set_priority(bus->output_io_event_source, bus->event_priority);
+ } else
+ r = sd_event_source_set_io_fd(bus->output_io_event_source, bus->output_fd);
+
+ if (r < 0)
+ return r;
+ }
+
+ return 0;
+}
+
+static void detach_io_events(sd_bus *bus) {
+ assert(bus);
+
+ if (bus->input_io_event_source) {
+ sd_event_source_set_enabled(bus->input_io_event_source, SD_EVENT_OFF);
+ bus->input_io_event_source = sd_event_source_unref(bus->input_io_event_source);
+ }
+
+ if (bus->output_io_event_source) {
+ sd_event_source_set_enabled(bus->output_io_event_source, SD_EVENT_OFF);
+ bus->output_io_event_source = sd_event_source_unref(bus->output_io_event_source);
+ }
+}
+
_public_ int sd_bus_attach_event(sd_bus *bus, sd_event *event, int priority) {
int r;
return r;
}
- r = sd_event_add_io(bus->event, bus->input_fd, 0, io_callback, bus, &bus->input_io_event_source);
- if (r < 0)
- goto fail;
-
- r = sd_event_source_set_priority(bus->input_io_event_source, priority);
- if (r < 0)
- goto fail;
-
- if (bus->output_fd != bus->input_fd) {
- r = sd_event_add_io(bus->event, bus->output_fd, 0, io_callback, bus, &bus->output_io_event_source);
- if (r < 0)
- goto fail;
+ bus->event_priority = priority;
- r = sd_event_source_set_priority(bus->output_io_event_source, priority);
- if (r < 0)
- goto fail;
- }
-
- r = sd_event_source_set_prepare(bus->input_io_event_source, prepare_callback);
+ r = sd_event_add_monotonic(bus->event, 0, 0, time_callback, bus, &bus->time_event_source);
if (r < 0)
goto fail;
- r = sd_event_add_monotonic(bus->event, 0, 0, time_callback, bus, &bus->time_event_source);
+ r = sd_event_source_set_priority(bus->time_event_source, priority);
if (r < 0)
goto fail;
- r = sd_event_source_set_priority(bus->time_event_source, priority);
+ r = sd_event_add_exit(bus->event, quit_callback, bus, &bus->quit_event_source);
if (r < 0)
goto fail;
- r = sd_event_add_quit(bus->event, quit_callback, bus, &bus->quit_event_source);
+ r = attach_io_events(bus);
if (r < 0)
goto fail;
if (!bus->event)
return 0;
- if (bus->input_io_event_source) {
- sd_event_source_set_enabled(bus->input_io_event_source, SD_EVENT_OFF);
- bus->input_io_event_source = sd_event_source_unref(bus->input_io_event_source);
- }
-
- if (bus->output_io_event_source) {
- sd_event_source_set_enabled(bus->output_io_event_source, SD_EVENT_OFF);
- bus->output_io_event_source = sd_event_source_unref(bus->output_io_event_source);
- }
+ detach_io_events(bus);
if (bus->time_event_source) {
sd_event_source_set_enabled(bus->time_event_source, SD_EVENT_OFF);
}
_public_ int sd_bus_default_system(sd_bus **ret) {
- static __thread sd_bus *default_system_bus = NULL;
+ static thread_local sd_bus *default_system_bus = NULL;
return bus_default(sd_bus_open_system, &default_system_bus, ret);
}
_public_ int sd_bus_default_user(sd_bus **ret) {
- static __thread sd_bus *default_user_bus = NULL;
+ static thread_local sd_bus *default_user_bus = NULL;
return bus_default(sd_bus_open_user, &default_user_bus, ret);
}
~ianmdlvl / elogind.git / blobdiff