static void pstream_memblock_callback(pa_pstream *p, uint32_t channel, int64_t offset, pa_seek_mode_t seek, const pa_memchunk *chunk, void *userdata) {
pa_context *c = userdata;
pa_stream *s;
pa_assert(p);
pa_assert(chunk);
pa_assert(chunk->length > 0);
pa_assert(c);
pa_assert(PA_REFCNT_VALUE(c) >= 1);
pa_context_ref(c);
if ((s = pa_hashmap_get(c->record_streams, PA_UINT32_TO_PTR(channel)))) {
if (chunk->memblock) {
pa_memblockq_seek(s->record_memblockq, offset, seek, TRUE);
pa_memblockq_push_align(s->record_memblockq, chunk);
} else
pa_memblockq_seek(s->record_memblockq, offset+chunk->length, seek, TRUE);
if (s->read_callback) {
size_t l;
if ((l = pa_memblockq_get_length(s->record_memblockq)) > 0)
s->read_callback(s, l, s->read_userdata);
}
}
pa_context_unref(c);
}
static void on_connection(pa_socket_client *client, pa_iochannel*io, void *userdata) {
pa_context *c = userdata;
int saved_errno = errno;
pa_assert(client);
pa_assert(c);
pa_assert(c->state == PA_CONTEXT_CONNECTING);
pa_context_ref(c);
pa_socket_client_unref(client);
c->client = NULL;
if (!io) {
/* Try the next item in the list */
if (saved_errno == ECONNREFUSED ||
saved_errno == ETIMEDOUT ||
saved_errno == EHOSTUNREACH) {
try_next_connection(c);
goto finish;
}
pa_context_fail(c, PA_ERR_CONNECTIONREFUSED);
goto finish;
}
setup_context(c, io);
finish:
pa_context_unref(c);
}
void pa_command_extension(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
pa_context *c = userdata;
uint32_t idx;
const char *name;
pa_assert(pd);
pa_assert(command == PA_COMMAND_EXTENSION);
pa_assert(t);
pa_assert(c);
pa_assert(PA_REFCNT_VALUE(c) >= 1);
pa_context_ref(c);
if (c->version < 15) {
pa_context_fail(c, PA_ERR_PROTOCOL);
goto finish;
}
if (pa_tagstruct_getu32(t, &idx) < 0 ||
pa_tagstruct_gets(t, &name) < 0) {
pa_context_fail(c, PA_ERR_PROTOCOL);
goto finish;
}
if (!strcmp(name, "module-stream-restore"))
pa_ext_stream_restore_command(c, tag, t);
else if (!strcmp(name, "module-device-manager"))
pa_ext_device_manager_command(c, tag, t);
else
pa_log(_("Received message for unknown extension '%s'"), name);
finish:
pa_context_unref(c);
}
static void setup_context(pa_context *c, pa_iochannel *io) {
uint8_t cookie[PA_NATIVE_COOKIE_LENGTH];
pa_tagstruct *t;
uint32_t tag;
pa_assert(c);
pa_assert(io);
pa_context_ref(c);
pa_assert(!c->pstream);
c->pstream = pa_pstream_new(c->mainloop, io, c->mempool);
pa_pstream_set_die_callback(c->pstream, pstream_die_callback, c);
pa_pstream_set_receive_packet_callback(c->pstream, pstream_packet_callback, c);
pa_pstream_set_receive_memblock_callback(c->pstream, pstream_memblock_callback, c);
pa_assert(!c->pdispatch);
c->pdispatch = pa_pdispatch_new(c->mainloop, c->use_rtclock, command_table, PA_COMMAND_MAX);
if (pa_client_conf_load_cookie(c->conf, cookie, sizeof(cookie)) < 0)
pa_log_info("No cookie loaded. Attempting to connect without.");
t = pa_tagstruct_command(c, PA_COMMAND_AUTH, &tag);
c->do_shm =
pa_mempool_is_shared(c->mempool) &&
c->is_local;
pa_log_debug("SHM possible: %s", pa_yes_no(c->do_shm));
/* Starting with protocol version 13 we use the MSB of the version
* tag for informing the other side if we could do SHM or not.
* Starting from version 31, second MSB is used to flag memfd support. */
pa_tagstruct_putu32(t, PA_PROTOCOL_VERSION | (c->do_shm ? 0x80000000U : 0) |
(c->memfd_on_local ? 0x40000000 : 0));
pa_tagstruct_put_arbitrary(t, cookie, sizeof(cookie));
#ifdef HAVE_CREDS
{
pa_creds ucred;
if (pa_iochannel_creds_supported(io))
pa_iochannel_creds_enable(io);
ucred.uid = getuid();
ucred.gid = getgid();
pa_pstream_send_tagstruct_with_creds(c->pstream, t, &ucred);
}
#else
pa_pstream_send_tagstruct(c->pstream, t);
#endif
pa_pdispatch_register_reply(c->pdispatch, tag, DEFAULT_TIMEOUT, setup_complete_callback, c, NULL);
pa_context_set_state(c, PA_CONTEXT_AUTHORIZING);
pa_context_unref(c);
}
static void pstream_packet_callback(pa_pstream *p, pa_packet *packet, const pa_creds *creds, void *userdata) {
pa_context *c = userdata;
pa_assert(p);
pa_assert(packet);
pa_assert(c);
pa_context_ref(c);
if (pa_pdispatch_run(c->pdispatch, packet, creds, c) < 0)
pa_context_fail(c, PA_ERR_PROTOCOL);
pa_context_unref(c);
}
APULSE_EXPORT
int
pa_context_connect(pa_context *c, const char *server, pa_context_flags_t flags,
const pa_spawn_api *api)
{
trace_info_f("P %s c=%p, server=%s, flags=%u, api=%p\n", __func__, c,
server, flags, api);
pa_context_ref(c);
pai_context_set_state(c, PA_CONTEXT_CONNECTING);
c->new_state = PA_CONTEXT_READY;
c->mainloop_api->defer_new(c->mainloop_api, pai_context_state_changed, c);
return 0;
}
static void pa_command_enable_srbchannel(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
pa_context *c = userdata;
#ifdef HAVE_CREDS
pa_cmsg_ancil_data *ancil = NULL;
pa_assert(pd);
pa_assert(command == PA_COMMAND_ENABLE_SRBCHANNEL);
pa_assert(t);
pa_assert(c);
pa_assert(PA_REFCNT_VALUE(c) >= 1);
ancil = pa_pdispatch_take_ancil_data(pd);
if (!ancil)
goto fail;
/* Currently only one srb channel is supported, might change in future versions */
if (c->srb_template.readfd != -1)
goto fail;
if (ancil->nfd != 2 || ancil->fds[0] == -1 || ancil->fds[1] == -1)
goto fail;
pa_context_ref(c);
c->srb_template.readfd = ancil->fds[0];
c->srb_template.writefd = ancil->fds[1];
c->srb_setup_tag = tag;
pa_context_unref(c);
ancil->close_fds_on_cleanup = false;
return;
fail:
if (ancil)
pa_cmsg_ancil_data_close_fds(ancil);
pa_context_fail(c, PA_ERR_PROTOCOL);
return;
#else
pa_assert(c);
pa_context_fail(c, PA_ERR_PROTOCOL);
#endif
}
static void
pai_context_set_state(pa_context *c, pa_context_state_t new_state)
{
if (c->state == new_state)
return;
pa_context_ref(c);
c->state = new_state;
if (c->state_cb)
c->state_cb(c, c->state_cb_userdata);
if (new_state == PA_CONTEXT_FAILED || new_state == PA_CONTEXT_TERMINATED) {
c->state_cb = NULL;
}
pa_context_unref(c);
}
void pa_context_set_state(pa_context *c, pa_context_state_t st) {
pa_assert(c);
pa_assert(PA_REFCNT_VALUE(c) >= 1);
if (c->state == st)
return;
pa_context_ref(c);
c->state = st;
if (c->state_callback)
c->state_callback(c, c->state_userdata);
if (st == PA_CONTEXT_FAILED || st == PA_CONTEXT_TERMINATED)
context_unlink(c);
pa_context_unref(c);
}
static void pa_command_enable_srbchannel(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
pa_context *c = userdata;
#ifdef HAVE_CREDS
const int *fds;
int nfd;
pa_assert(pd);
pa_assert(command == PA_COMMAND_ENABLE_SRBCHANNEL);
pa_assert(t);
pa_assert(c);
pa_assert(PA_REFCNT_VALUE(c) >= 1);
/* Currently only one srb channel is supported, might change in future versions */
if (c->srb_template.readfd != -1) {
pa_context_fail(c, PA_ERR_PROTOCOL);
return;
}
fds = pa_pdispatch_fds(pd, &nfd);
if (nfd != 2 || !fds || fds[0] == -1 || fds[1] == -1) {
pa_context_fail(c, PA_ERR_PROTOCOL);
return;
}
pa_context_ref(c);
c->srb_template.readfd = fds[0];
c->srb_template.writefd = fds[1];
c->srb_setup_tag = tag;
pa_context_unref(c);
#else
pa_assert(c);
pa_context_fail(c, PA_ERR_PROTOCOL);
#endif
}
void pa_command_client_event(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
pa_context *c = userdata;
pa_proplist *pl = NULL;
const char *event;
pa_assert(pd);
pa_assert(command == PA_COMMAND_CLIENT_EVENT);
pa_assert(t);
pa_assert(c);
pa_assert(PA_REFCNT_VALUE(c) >= 1);
pa_context_ref(c);
if (c->version < 15) {
pa_context_fail(c, PA_ERR_PROTOCOL);
goto finish;
}
pl = pa_proplist_new();
if (pa_tagstruct_gets(t, &event) < 0 ||
pa_tagstruct_get_proplist(t, pl) < 0 ||
!pa_tagstruct_eof(t) || !event) {
pa_context_fail(c, PA_ERR_PROTOCOL);
goto finish;
}
if (c->event_callback)
c->event_callback(c, event, pl, c->event_userdata);
finish:
pa_context_unref(c);
if (pl)
pa_proplist_free(pl);
}
int pa_context_connect(
pa_context *c,
const char *server,
pa_context_flags_t flags,
const pa_spawn_api *api) {
int r = -1;
pa_assert(c);
pa_assert(PA_REFCNT_VALUE(c) >= 1);
PA_CHECK_VALIDITY(c, !pa_detect_fork(), PA_ERR_FORKED);
PA_CHECK_VALIDITY(c, c->state == PA_CONTEXT_UNCONNECTED, PA_ERR_BADSTATE);
PA_CHECK_VALIDITY(c, !(flags & ~(PA_CONTEXT_NOAUTOSPAWN|PA_CONTEXT_NOFAIL)), PA_ERR_INVALID);
PA_CHECK_VALIDITY(c, !server || *server, PA_ERR_INVALID);
if (server)
c->conf->autospawn = FALSE;
else
server = c->conf->default_server;
pa_context_ref(c);
c->no_fail = !!(flags & PA_CONTEXT_NOFAIL);
c->server_specified = !!server;
pa_assert(!c->server_list);
if (server) {
if (!(c->server_list = pa_strlist_parse(server))) {
pa_context_fail(c, PA_ERR_INVALIDSERVER);
goto finish;
}
} else {
char *d;
/* Prepend in reverse order */
/* Follow the X display */
if (c->conf->auto_connect_display) {
if ((d = getenv("DISPLAY"))) {
d = pa_xstrndup(d, strcspn(d, ":"));
if (*d)
c->server_list = pa_strlist_prepend(c->server_list, d);
pa_xfree(d);
}
}
/* Add TCP/IP on the localhost */
if (c->conf->auto_connect_localhost) {
c->server_list = pa_strlist_prepend(c->server_list, "tcp6:[::1]");
c->server_list = pa_strlist_prepend(c->server_list, "tcp4:127.0.0.1");
}
/* The system wide instance via PF_LOCAL */
c->server_list = pa_strlist_prepend(c->server_list, PA_SYSTEM_RUNTIME_PATH PA_PATH_SEP PA_NATIVE_DEFAULT_UNIX_SOCKET);
/* The user instance via PF_LOCAL */
c->server_list = prepend_per_user(c->server_list);
}
/* Set up autospawning */
if (!(flags & PA_CONTEXT_NOAUTOSPAWN) && c->conf->autospawn) {
#ifdef HAVE_GETUID
if (getuid() == 0)
pa_log_debug("Not doing autospawn since we are root.");
else {
c->do_autospawn = TRUE;
if (api)
c->spawn_api = *api;
}
#endif
}
pa_context_set_state(c, PA_CONTEXT_CONNECTING);
r = try_next_connection(c);
finish:
pa_context_unref(c);
return r;
}
static int context_autospawn(pa_context *c) {
pid_t pid;
int status, r;
struct sigaction sa;
pa_context_ref(c);
if (sigaction(SIGCHLD, NULL, &sa) < 0) {
pa_log_debug("sigaction() failed: %s", pa_cstrerror(errno));
pa_context_fail(c, PA_ERR_INTERNAL);
goto fail;
}
if ((sa.sa_flags & SA_NOCLDWAIT) || sa.sa_handler == SIG_IGN) {
pa_log_debug("Process disabled waitpid(), cannot autospawn.");
pa_context_fail(c, PA_ERR_CONNECTIONREFUSED);
goto fail;
}
pa_log_debug("Trying to autospawn...");
if (c->spawn_api.prefork)
c->spawn_api.prefork();
if ((pid = fork()) < 0) {
pa_log_error(_("fork(): %s"), pa_cstrerror(errno));
pa_context_fail(c, PA_ERR_INTERNAL);
if (c->spawn_api.postfork)
c->spawn_api.postfork();
goto fail;
} else if (!pid) {
/* Child */
const char *state = NULL;
const char * argv[32];
unsigned n = 0;
if (c->spawn_api.atfork)
c->spawn_api.atfork();
/* We leave most of the cleaning up of the process environment
* to the executable. We only clean up the file descriptors to
* make sure the executable can actually be loaded
* correctly. */
pa_close_all(-1);
/* Setup argv */
argv[n++] = c->conf->daemon_binary;
argv[n++] = "--start";
while (n < PA_ELEMENTSOF(argv)-1) {
char *a;
if (!(a = pa_split_spaces(c->conf->extra_arguments, &state)))
break;
argv[n++] = a;
}
argv[n++] = NULL;
pa_assert(n <= PA_ELEMENTSOF(argv));
execv(argv[0], (char * const *) argv);
_exit(1);
}
/* Parent */
if (c->spawn_api.postfork)
c->spawn_api.postfork();
do {
r = waitpid(pid, &status, 0);
} while (r < 0 && errno == EINTR);
if (r < 0) {
if (errno != ESRCH) {
pa_log(_("waitpid(): %s"), pa_cstrerror(errno));
pa_context_fail(c, PA_ERR_INTERNAL);
goto fail;
}
/* hmm, something already reaped our child, so we assume
* startup worked, even if we cannot know */
} else if (!WIFEXITED(status) || WEXITSTATUS(status) != 0) {
pa_context_fail(c, PA_ERR_CONNECTIONREFUSED);
goto fail;
}
pa_context_unref(c);
return 0;
fail:
pa_context_unref(c);
return -1;
}
static void setup_complete_callback(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
pa_context *c = userdata;
pa_assert(pd);
pa_assert(c);
pa_assert(c->state == PA_CONTEXT_AUTHORIZING || c->state == PA_CONTEXT_SETTING_NAME);
pa_context_ref(c);
if (command != PA_COMMAND_REPLY) {
pa_context_handle_error(c, command, t, TRUE);
goto finish;
}
switch(c->state) {
case PA_CONTEXT_AUTHORIZING: {
pa_tagstruct *reply;
pa_bool_t shm_on_remote = FALSE;
if (pa_tagstruct_getu32(t, &c->version) < 0 ||
!pa_tagstruct_eof(t)) {
pa_context_fail(c, PA_ERR_PROTOCOL);
goto finish;
}
/* Minimum supported version */
if (c->version < 8) {
pa_context_fail(c, PA_ERR_VERSION);
goto finish;
}
/* Starting with protocol version 13 the MSB of the version
tag reflects if shm is available for this connection or
not. */
if (c->version >= 13) {
shm_on_remote = !!(c->version & 0x80000000U);
c->version &= 0x7FFFFFFFU;
}
pa_log_debug("Protocol version: remote %u, local %u", c->version, PA_PROTOCOL_VERSION);
/* Enable shared memory support if possible */
if (c->do_shm)
if (c->version < 10 || (c->version >= 13 && !shm_on_remote))
c->do_shm = FALSE;
if (c->do_shm) {
/* Only enable SHM if both sides are owned by the same
* user. This is a security measure because otherwise
* data private to the user might leak. */
#ifdef HAVE_CREDS
const pa_creds *creds;
if (!(creds = pa_pdispatch_creds(pd)) || getuid() != creds->uid)
c->do_shm = FALSE;
#endif
}
pa_log_debug("Negotiated SHM: %s", pa_yes_no(c->do_shm));
pa_pstream_enable_shm(c->pstream, c->do_shm);
reply = pa_tagstruct_command(c, PA_COMMAND_SET_CLIENT_NAME, &tag);
if (c->version >= 13) {
pa_init_proplist(c->proplist);
pa_tagstruct_put_proplist(reply, c->proplist);
} else
pa_tagstruct_puts(reply, pa_proplist_gets(c->proplist, PA_PROP_APPLICATION_NAME));
pa_pstream_send_tagstruct(c->pstream, reply);
pa_pdispatch_register_reply(c->pdispatch, tag, DEFAULT_TIMEOUT, setup_complete_callback, c, NULL);
pa_context_set_state(c, PA_CONTEXT_SETTING_NAME);
break;
}
case PA_CONTEXT_SETTING_NAME :
if ((c->version >= 13 && (pa_tagstruct_getu32(t, &c->client_index) < 0 ||
c->client_index == PA_INVALID_INDEX)) ||
!pa_tagstruct_eof(t)) {
pa_context_fail(c, PA_ERR_PROTOCOL);
goto finish;
}
pa_context_set_state(c, PA_CONTEXT_READY);
break;
default:
pa_assert_not_reached();
}
finish:
pa_context_unref(c);
}
static int context_autospawn(pa_context *c) {
pid_t pid;
int status, r;
struct sigaction sa;
pa_context_ref(c);
if (sigaction(SIGCHLD, NULL, &sa) < 0) {
pa_log_debug("sigaction() failed: %s", pa_cstrerror(errno));
pa_context_fail(c, PA_ERR_INTERNAL);
goto fail;
}
#ifdef SA_NOCLDWAIT
if ((sa.sa_flags & SA_NOCLDWAIT) || sa.sa_handler == SIG_IGN) {
#else
if (sa.sa_handler == SIG_IGN) {
#endif
pa_log_debug("Process disabled waitpid(), cannot autospawn.");
pa_context_fail(c, PA_ERR_CONNECTIONREFUSED);
goto fail;
}
pa_log_debug("Trying to autospawn...");
if (c->spawn_api.prefork)
c->spawn_api.prefork();
if ((pid = fork()) < 0) {
pa_log_error(_("fork(): %s"), pa_cstrerror(errno));
pa_context_fail(c, PA_ERR_INTERNAL);
if (c->spawn_api.postfork)
c->spawn_api.postfork();
goto fail;
} else if (!pid) {
/* Child */
const char *state = NULL;
const char * argv[32];
unsigned n = 0;
if (c->spawn_api.atfork)
c->spawn_api.atfork();
/* We leave most of the cleaning up of the process environment
* to the executable. We only clean up the file descriptors to
* make sure the executable can actually be loaded
* correctly. */
pa_close_all(-1);
/* Setup argv */
argv[n++] = c->conf->daemon_binary;
argv[n++] = "--start";
while (n < PA_ELEMENTSOF(argv)-1) {
char *a;
if (!(a = pa_split_spaces(c->conf->extra_arguments, &state)))
break;
argv[n++] = a;
}
argv[n++] = NULL;
pa_assert(n <= PA_ELEMENTSOF(argv));
execv(argv[0], (char * const *) argv);
_exit(1);
}
/* Parent */
if (c->spawn_api.postfork)
c->spawn_api.postfork();
do {
r = waitpid(pid, &status, 0);
} while (r < 0 && errno == EINTR);
if (r < 0) {
if (errno != ESRCH) {
pa_log(_("waitpid(): %s"), pa_cstrerror(errno));
pa_context_fail(c, PA_ERR_INTERNAL);
goto fail;
}
/* hmm, something already reaped our child, so we assume
* startup worked, even if we cannot know */
} else if (!WIFEXITED(status) || WEXITSTATUS(status) != 0) {
pa_context_fail(c, PA_ERR_CONNECTIONREFUSED);
goto fail;
}
pa_context_unref(c);
return 0;
fail:
pa_context_unref(c);
return -1;
}
#endif /* OS_IS_WIN32 */
static void on_connection(pa_socket_client *client, pa_iochannel*io, void *userdata);
#ifdef HAVE_DBUS
static void track_pulseaudio_on_dbus(pa_context *c, DBusBusType type, pa_dbus_wrap_connection **conn) {
DBusError error;
pa_assert(c);
pa_assert(conn);
dbus_error_init(&error);
if (!(*conn = pa_dbus_wrap_connection_new(c->mainloop, c->use_rtclock, type, &error)) || dbus_error_is_set(&error)) {
pa_log_warn("Unable to contact DBUS: %s: %s", error.name, error.message);
goto fail;
}
if (!dbus_connection_add_filter(pa_dbus_wrap_connection_get(*conn), filter_cb, c, NULL)) {
pa_log_warn("Failed to add filter function");
goto fail;
}
c->filter_added = true;
if (pa_dbus_add_matches(
pa_dbus_wrap_connection_get(*conn), &error,
"type='signal',sender='" DBUS_SERVICE_DBUS "',interface='" DBUS_INTERFACE_DBUS "',member='NameOwnerChanged',arg0='org.pulseaudio.Server',arg1=''", NULL) < 0) {
pa_log_warn("Unable to track org.pulseaudio.Server: %s: %s", error.name, error.message);
goto fail;
}
return;
fail:
if (*conn) {
pa_dbus_wrap_connection_free(*conn);
*conn = NULL;
}
dbus_error_free(&error);
}
static void setup_complete_callback(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
pa_context *c = userdata;
pa_assert(pd);
pa_assert(c);
pa_assert(c->state == PA_CONTEXT_AUTHORIZING || c->state == PA_CONTEXT_SETTING_NAME);
pa_context_ref(c);
if (command != PA_COMMAND_REPLY) {
pa_context_handle_error(c, command, t, true);
goto finish;
}
switch(c->state) {
case PA_CONTEXT_AUTHORIZING: {
pa_tagstruct *reply;
bool shm_on_remote = false;
bool memfd_on_remote = false;
if (pa_tagstruct_getu32(t, &c->version) < 0 ||
!pa_tagstruct_eof(t)) {
pa_context_fail(c, PA_ERR_PROTOCOL);
goto finish;
}
/* Minimum supported version */
if (c->version < 8) {
pa_context_fail(c, PA_ERR_VERSION);
goto finish;
}
/* Starting with protocol version 13 the MSB of the version
tag reflects if shm is available for this connection or
not. */
if (c->version >= 13) {
shm_on_remote = !!(c->version & 0x80000000U);
/* Starting with protocol version 31, the second MSB of the version
* tag reflects whether memfd is supported on the other PA end. */
if (c->version >= 31)
memfd_on_remote = !!(c->version & 0x40000000U);
/* Reserve the two most-significant _bytes_ of the version tag
* for flags. */
c->version &= 0x0000FFFFU;
}
pa_log_debug("Protocol version: remote %u, local %u", c->version, PA_PROTOCOL_VERSION);
/* Enable shared memory support if possible */
if (c->do_shm)
if (c->version < 10 || (c->version >= 13 && !shm_on_remote))
c->do_shm = false;
if (c->do_shm) {
/* Only enable SHM if both sides are owned by the same
* user. This is a security measure because otherwise
* data private to the user might leak. */
#ifdef HAVE_CREDS
const pa_creds *creds;
if (!(creds = pa_pdispatch_creds(pd)) || getuid() != creds->uid)
c->do_shm = false;
#endif
}
pa_log_debug("Negotiated SHM: %s", pa_yes_no(c->do_shm));
pa_pstream_enable_shm(c->pstream, c->do_shm);
c->shm_type = PA_MEM_TYPE_PRIVATE;
if (c->do_shm) {
if (c->version >= 31 && memfd_on_remote && c->memfd_on_local) {
const char *reason;
pa_pstream_enable_memfd(c->pstream);
if (pa_mempool_is_memfd_backed(c->mempool))
if (pa_pstream_register_memfd_mempool(c->pstream, c->mempool, &reason))
pa_log("Failed to regester memfd mempool. Reason: %s", reason);
/* Even if memfd pool registration fails, the negotiated SHM type
* shall remain memfd as both endpoints claim to support it. */
c->shm_type = PA_MEM_TYPE_SHARED_MEMFD;
} else
c->shm_type = PA_MEM_TYPE_SHARED_POSIX;
}
pa_log_debug("Memfd possible: %s", pa_yes_no(c->memfd_on_local));
pa_log_debug("Negotiated SHM type: %s", pa_mem_type_to_string(c->shm_type));
reply = pa_tagstruct_command(c, PA_COMMAND_SET_CLIENT_NAME, &tag);
if (c->version >= 13) {
pa_init_proplist(c->proplist);
pa_tagstruct_put_proplist(reply, c->proplist);
} else
pa_tagstruct_puts(reply, pa_proplist_gets(c->proplist, PA_PROP_APPLICATION_NAME));
pa_pstream_send_tagstruct(c->pstream, reply);
pa_pdispatch_register_reply(c->pdispatch, tag, DEFAULT_TIMEOUT, setup_complete_callback, c, NULL);
pa_context_set_state(c, PA_CONTEXT_SETTING_NAME);
break;
}
case PA_CONTEXT_SETTING_NAME :
if ((c->version >= 13 && (pa_tagstruct_getu32(t, &c->client_index) < 0 ||
c->client_index == PA_INVALID_INDEX)) ||
!pa_tagstruct_eof(t)) {
pa_context_fail(c, PA_ERR_PROTOCOL);
goto finish;
}
pa_context_set_state(c, PA_CONTEXT_READY);
break;
default:
pa_assert_not_reached();
}
finish:
pa_context_unref(c);
}
