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Diffstat (limited to 'src/libsystemd-bus/sd-bus.c')
-rw-r--r--src/libsystemd-bus/sd-bus.c728
1 files changed, 89 insertions, 639 deletions
diff --git a/src/libsystemd-bus/sd-bus.c b/src/libsystemd-bus/sd-bus.c
index 3bdbd11132..6eab4a5469 100644
--- a/src/libsystemd-bus/sd-bus.c
+++ b/src/libsystemd-bus/sd-bus.c
@@ -29,13 +29,13 @@
#include "util.h"
#include "macro.h"
-#include "missing.h"
#include "strv.h"
#include "sd-bus.h"
#include "bus-internal.h"
#include "bus-message.h"
#include "bus-type.h"
+#include "bus-socket.h"
static int bus_poll(sd_bus *bus, bool need_more, uint64_t timeout_usec);
@@ -250,7 +250,7 @@ static int bus_send_hello(sd_bus *bus) {
return r;
}
-static int bus_start_running(sd_bus *bus) {
+int bus_start_running(sd_bus *bus) {
assert(bus);
if (bus->send_hello) {
@@ -648,310 +648,7 @@ static int bus_parse_next_address(sd_bus *b) {
return 1;
}
-static void iovec_advance(struct iovec *iov, unsigned *idx, size_t size) {
-
- while (size > 0) {
- struct iovec *i = iov + *idx;
-
- if (i->iov_len > size) {
- i->iov_base = (uint8_t*) i->iov_base + size;
- i->iov_len -= size;
- return;
- }
-
- size -= i->iov_len;
-
- i->iov_base = NULL;
- i->iov_len = 0;
-
- (*idx) ++;
- }
-}
-
-static int bus_write_auth(sd_bus *b) {
- struct msghdr mh;
- ssize_t k;
-
- assert(b);
- assert(b->state == BUS_AUTHENTICATING);
-
- if (b->auth_index >= ELEMENTSOF(b->auth_iovec))
- return 0;
-
- if (b->auth_timeout == 0)
- b->auth_timeout = now(CLOCK_MONOTONIC) + BUS_DEFAULT_TIMEOUT;
-
- zero(mh);
- mh.msg_iov = b->auth_iovec + b->auth_index;
- mh.msg_iovlen = ELEMENTSOF(b->auth_iovec) - b->auth_index;
-
- k = sendmsg(b->fd, &mh, MSG_DONTWAIT|MSG_NOSIGNAL);
- if (k < 0)
- return errno == EAGAIN ? 0 : -errno;
-
- iovec_advance(b->auth_iovec, &b->auth_index, (size_t) k);
-
- return 1;
-}
-
-static int bus_auth_verify(sd_bus *b) {
- char *e, *f, *start;
- sd_id128_t peer;
- unsigned i;
- int r;
-
- /* We expect two response lines: "OK" and possibly
- * "AGREE_UNIX_FD" */
-
- e = memmem(b->rbuffer, b->rbuffer_size, "\r\n", 2);
- if (!e)
- return 0;
-
- if (b->negotiate_fds) {
- f = memmem(e + 2, b->rbuffer_size - (e - (char*) b->rbuffer) - 2, "\r\n", 2);
- if (!f)
- return 0;
-
- start = f + 2;
- } else {
- f = NULL;
- start = e + 2;
- }
-
- /* Nice! We got all the lines we need. First check the OK
- * line */
-
- if (e - (char*) b->rbuffer != 3 + 32)
- return -EPERM;
-
- if (memcmp(b->rbuffer, "OK ", 3))
- return -EPERM;
-
- for (i = 0; i < 32; i += 2) {
- int x, y;
-
- x = unhexchar(((char*) b->rbuffer)[3 + i]);
- y = unhexchar(((char*) b->rbuffer)[3 + i + 1]);
-
- if (x < 0 || y < 0)
- return -EINVAL;
-
- peer.bytes[i/2] = ((uint8_t) x << 4 | (uint8_t) y);
- }
-
- if (!sd_id128_equal(b->peer, SD_ID128_NULL) &&
- !sd_id128_equal(b->peer, peer))
- return -EPERM;
-
- b->peer = peer;
-
- /* And possibly check the second line, too */
-
- if (f)
- b->can_fds =
- (f - e == sizeof("\r\nAGREE_UNIX_FD") - 1) &&
- memcmp(e + 2, "AGREE_UNIX_FD", sizeof("AGREE_UNIX_FD") - 1) == 0;
-
- b->rbuffer_size -= (start - (char*) b->rbuffer);
- memmove(b->rbuffer, start, b->rbuffer_size);
-
- r = bus_start_running(b);
- if (r < 0)
- return r;
-
- return 1;
-}
-
-static int bus_read_auth(sd_bus *b) {
- struct msghdr mh;
- struct iovec iov;
- size_t n;
- ssize_t k;
- int r;
- void *p;
-
- assert(b);
-
- r = bus_auth_verify(b);
- if (r != 0)
- return r;
-
- n = MAX(3 + 32 + 2 + sizeof("AGREE_UNIX_FD") - 1 + 2, b->rbuffer_size * 2);
-
- if (n > BUS_AUTH_SIZE_MAX)
- n = BUS_AUTH_SIZE_MAX;
-
- if (b->rbuffer_size >= n)
- return -ENOBUFS;
-
- p = realloc(b->rbuffer, n);
- if (!p)
- return -ENOMEM;
-
- b->rbuffer = p;
-
- zero(iov);
- iov.iov_base = (uint8_t*) b->rbuffer + b->rbuffer_size;
- iov.iov_len = n - b->rbuffer_size;
-
- zero(mh);
- mh.msg_iov = &iov;
- mh.msg_iovlen = 1;
-
- k = recvmsg(b->fd, &mh, MSG_DONTWAIT|MSG_NOSIGNAL);
- if (k < 0)
- return errno == EAGAIN ? 0 : -errno;
- if (k == 0)
- return -ECONNRESET;
-
- b->rbuffer_size += k;
-
- r = bus_auth_verify(b);
- if (r != 0)
- return r;
-
- return 1;
-}
-
-static int bus_setup_fd(sd_bus *b) {
- int one;
-
- assert(b);
-
- /* Enable SO_PASSCRED + SO_PASSEC. We try this on any socket,
- * just in case. This is actually irrelavant for */
- one = 1;
- setsockopt(b->fd, SOL_SOCKET, SO_PASSCRED, &one, sizeof(one));
- setsockopt(b->fd, SOL_SOCKET, SO_PASSSEC, &one, sizeof(one));
-
- /* Increase the buffers to a MB */
- fd_inc_rcvbuf(b->fd, 1024*1024);
- fd_inc_sndbuf(b->fd, 1024*1024);
-
- return 0;
-}
-
-static int bus_start_auth(sd_bus *b) {
- static const char auth_prefix[] = "\0AUTH EXTERNAL ";
- static const char auth_suffix_with_unix_fd[] = "\r\nNEGOTIATE_UNIX_FD\r\nBEGIN\r\n";
- static const char auth_suffix_without_unix_fd[] = "\r\nBEGIN\r\n";
-
- char text[20 + 1]; /* enough space for a 64bit integer plus NUL */
- size_t l;
- const char *auth_suffix;
- int domain = 0, r;
- socklen_t sl;
-
- assert(b);
-
- b->state = BUS_AUTHENTICATING;
-
- sl = sizeof(domain);
- r = getsockopt(b->fd, SOL_SOCKET, SO_DOMAIN, &domain, &sl);
- if (r < 0)
- return -errno;
-
- if (domain != AF_UNIX)
- b->negotiate_fds = false;
-
- snprintf(text, sizeof(text), "%llu", (unsigned long long) geteuid());
- char_array_0(text);
-
- l = strlen(text);
- b->auth_uid = hexmem(text, l);
- if (!b->auth_uid)
- return -ENOMEM;
-
- auth_suffix = b->negotiate_fds ? auth_suffix_with_unix_fd : auth_suffix_without_unix_fd;
-
- b->auth_iovec[0].iov_base = (void*) auth_prefix;
- b->auth_iovec[0].iov_len = sizeof(auth_prefix) -1;
- b->auth_iovec[1].iov_base = (void*) b->auth_uid;
- b->auth_iovec[1].iov_len = l * 2;
- b->auth_iovec[2].iov_base = (void*) auth_suffix;
- b->auth_iovec[2].iov_len = strlen(auth_suffix);
- b->auth_size = sizeof(auth_prefix) - 1 + l * 2 + sizeof(auth_suffix) - 1;
-
- return bus_write_auth(b);
-}
-
-static int bus_connect(sd_bus *b) {
- int r;
-
- assert(b);
- assert(b->fd < 0);
- assert(b->sockaddr.sa.sa_family != AF_UNSPEC);
-
- b->fd = socket(b->sockaddr.sa.sa_family, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0);
- if (b->fd < 0)
- return -errno;
-
- r = bus_setup_fd(b);
- if (r < 0)
- return r;
-
- r = connect(b->fd, &b->sockaddr.sa, b->sockaddr_size);
- if (r < 0) {
- if (errno == EINPROGRESS)
- return 1;
-
- return -errno;
- }
-
- return bus_start_auth(b);
-}
-
-static int bus_exec(sd_bus *b) {
- int s[2];
- pid_t pid;
-
- assert(b);
- assert(b->fd < 0);
- assert(b->exec_path);
-
- b->fd = socketpair(AF_UNIX, SOCK_STREAM|SOCK_NONBLOCK|SOCK_CLOEXEC, 0, s);
- if (b->fd < 0)
- return -errno;
-
- pid = fork();
- if (pid < 0) {
- close_pipe(s);
- return -errno;
- }
- if (pid == 0) {
- /* Child */
-
- close_all_fds(s, 2);
- close_nointr_nofail(s[0]);
-
- assert_se(dup3(s[1], STDIN_FILENO, 0) == STDIN_FILENO);
- assert_se(dup3(s[1], STDOUT_FILENO, 0) == STDOUT_FILENO);
-
- if (s[1] != STDIN_FILENO && s[1] != STDOUT_FILENO)
- close_nointr_nofail(s[1]);
-
- fd_cloexec(STDIN_FILENO, false);
- fd_cloexec(STDOUT_FILENO, false);
- fd_nonblock(STDIN_FILENO, false);
- fd_nonblock(STDOUT_FILENO, false);
-
- if (b->exec_argv)
- execvp(b->exec_path, b->exec_argv);
- else {
- const char *argv[] = { b->exec_path, NULL };
- execvp(b->exec_path, (char**) argv);
- }
-
- _exit(EXIT_FAILURE);
- }
-
- close_nointr_nofail(s[1]);
- b->fd = s[0];
-
- return bus_start_auth(b);
-}
-
-static int bus_start_connect(sd_bus *b) {
+static int bus_start_address(sd_bus *b) {
int r;
assert(b);
@@ -963,7 +660,8 @@ static int bus_start_connect(sd_bus *b) {
}
if (b->sockaddr.sa.sa_family != AF_UNSPEC) {
- r = bus_connect(b);
+
+ r = bus_socket_connect(b);
if (r >= 0)
return r;
@@ -971,7 +669,7 @@ static int bus_start_connect(sd_bus *b) {
} else if (b->exec_path) {
- r = bus_exec(b);
+ r = bus_socket_exec(b);
if (r >= 0)
return r;
@@ -986,6 +684,13 @@ static int bus_start_connect(sd_bus *b) {
}
}
+int bus_next_address(sd_bus *b) {
+ assert(b);
+
+ bus_reset_parsed_address(b);
+ return bus_start_address(b);
+}
+
static int bus_start_fd(sd_bus *b) {
int r;
@@ -999,11 +704,7 @@ static int bus_start_fd(sd_bus *b) {
if (r < 0)
return r;
- r = bus_setup_fd(b);
- if (r < 0)
- return r;
-
- return bus_start_auth(b);
+ return bus_socket_take_fd(b);
}
int sd_bus_start(sd_bus *bus) {
@@ -1019,7 +720,7 @@ int sd_bus_start(sd_bus *bus) {
if (bus->fd >= 0)
r = bus_start_fd(bus);
else if (bus->address)
- r = bus_start_connect(bus);
+ r = bus_start_address(bus);
else
return -EINVAL;
@@ -1206,234 +907,6 @@ static int bus_seal_message(sd_bus *b, sd_bus_message *m) {
return bus_message_seal(m, ++b->serial);
}
-static int message_write(sd_bus *bus, sd_bus_message *m, size_t *idx) {
- struct msghdr mh;
- struct iovec *iov;
- ssize_t k;
- size_t n;
- unsigned j;
-
- assert(bus);
- assert(m);
- assert(idx);
- assert(bus->state == BUS_RUNNING || bus->state == BUS_HELLO);
-
- if (*idx >= m->size)
- return 0;
- zero(mh);
-
- if (m->n_fds > 0) {
- struct cmsghdr *control;
- control = alloca(CMSG_SPACE(sizeof(int) * m->n_fds));
-
- mh.msg_control = control;
- control->cmsg_level = SOL_SOCKET;
- control->cmsg_type = SCM_RIGHTS;
- mh.msg_controllen = control->cmsg_len = CMSG_LEN(sizeof(int) * m->n_fds);
- memcpy(CMSG_DATA(control), m->fds, sizeof(int) * m->n_fds);
- }
-
- n = m->n_iovec * sizeof(struct iovec);
- iov = alloca(n);
- memcpy(iov, m->iovec, n);
-
- j = 0;
- iovec_advance(iov, &j, *idx);
-
- mh.msg_iov = iov;
- mh.msg_iovlen = m->n_iovec;
-
- k = sendmsg(bus->fd, &mh, MSG_DONTWAIT|MSG_NOSIGNAL);
- if (k < 0)
- return errno == EAGAIN ? 0 : -errno;
-
- *idx += (size_t) k;
- return 1;
-}
-
-static int message_read_need(sd_bus *bus, size_t *need) {
- uint32_t a, b;
- uint8_t e;
- uint64_t sum;
-
- assert(bus);
- assert(need);
- assert(bus->state == BUS_RUNNING || bus->state == BUS_HELLO);
-
- if (bus->rbuffer_size < sizeof(struct bus_header)) {
- *need = sizeof(struct bus_header) + 8;
-
- /* Minimum message size:
- *
- * Header +
- *
- * Method Call: +2 string headers
- * Signal: +3 string headers
- * Method Error: +1 string headers
- * +1 uint32 headers
- * Method Reply: +1 uint32 headers
- *
- * A string header is at least 9 bytes
- * A uint32 header is at least 8 bytes
- *
- * Hence the minimum message size of a valid message
- * is header + 8 bytes */
-
- return 0;
- }
-
- a = ((const uint32_t*) bus->rbuffer)[1];
- b = ((const uint32_t*) bus->rbuffer)[3];
-
- e = ((const uint8_t*) bus->rbuffer)[0];
- if (e == SD_BUS_LITTLE_ENDIAN) {
- a = le32toh(a);
- b = le32toh(b);
- } else if (e == SD_BUS_BIG_ENDIAN) {
- a = be32toh(a);
- b = be32toh(b);
- } else
- return -EBADMSG;
-
- sum = (uint64_t) sizeof(struct bus_header) + (uint64_t) ALIGN_TO(b, 8) + (uint64_t) a;
- if (sum >= BUS_MESSAGE_SIZE_MAX)
- return -ENOBUFS;
-
- *need = (size_t) sum;
- return 0;
-}
-
-static int message_make(sd_bus *bus, size_t size, sd_bus_message **m) {
- sd_bus_message *t;
- void *b;
- int r;
-
- assert(bus);
- assert(m);
- assert(bus->rbuffer_size >= size);
- assert(bus->state == BUS_RUNNING || bus->state == BUS_HELLO);
-
- if (bus->rbuffer_size > size) {
- b = memdup((const uint8_t*) bus->rbuffer + size,
- bus->rbuffer_size - size);
- if (!b)
- return -ENOMEM;
- } else
- b = NULL;
-
- r = bus_message_from_malloc(bus->rbuffer, size,
- bus->fds, bus->n_fds,
- bus->ucred_valid ? &bus->ucred : NULL,
- bus->label[0] ? bus->label : NULL,
- &t);
- if (r < 0) {
- free(b);
- return r;
- }
-
- bus->rbuffer = b;
- bus->rbuffer_size -= size;
-
- bus->fds = NULL;
- bus->n_fds = 0;
-
- *m = t;
- return 1;
-}
-
-static int message_read(sd_bus *bus, sd_bus_message **m) {
- struct msghdr mh;
- struct iovec iov;
- ssize_t k;
- size_t need;
- int r;
- void *b;
- union {
- struct cmsghdr cmsghdr;
- uint8_t buf[CMSG_SPACE(sizeof(int) * BUS_FDS_MAX) +
- CMSG_SPACE(sizeof(struct ucred)) +
- CMSG_SPACE(NAME_MAX)]; /*selinux label */
- } control;
- struct cmsghdr *cmsg;
-
- assert(bus);
- assert(m);
- assert(bus->state == BUS_RUNNING || bus->state == BUS_HELLO);
-
- r = message_read_need(bus, &need);
- if (r < 0)
- return r;
-
- if (bus->rbuffer_size >= need)
- return message_make(bus, need, m);
-
- b = realloc(bus->rbuffer, need);
- if (!b)
- return -ENOMEM;
-
- bus->rbuffer = b;
-
- zero(iov);
- iov.iov_base = (uint8_t*) bus->rbuffer + bus->rbuffer_size;
- iov.iov_len = need - bus->rbuffer_size;
-
- zero(mh);
- mh.msg_iov = &iov;
- mh.msg_iovlen = 1;
- mh.msg_control = &control;
- mh.msg_controllen = sizeof(control);
-
- k = recvmsg(bus->fd, &mh, MSG_DONTWAIT|MSG_NOSIGNAL|MSG_CMSG_CLOEXEC);
- if (k < 0)
- return errno == EAGAIN ? 0 : -errno;
- if (k == 0)
- return -ECONNRESET;
-
- bus->rbuffer_size += k;
-
- for (cmsg = CMSG_FIRSTHDR(&mh); cmsg; cmsg = CMSG_NXTHDR(&mh, cmsg)) {
- if (cmsg->cmsg_level == SOL_SOCKET &&
- cmsg->cmsg_type == SCM_RIGHTS) {
- int n, *f;
-
- n = (cmsg->cmsg_len - CMSG_LEN(0)) / sizeof(int);
-
- f = realloc(bus->fds, sizeof(int) + (bus->n_fds + n));
- if (!f) {
- close_many((int*) CMSG_DATA(cmsg), n);
- return -ENOMEM;
- }
-
- memcpy(f + bus->n_fds, CMSG_DATA(cmsg), n * sizeof(int));
- bus->fds = f;
- bus->n_fds += n;
- } else if (cmsg->cmsg_level == SOL_SOCKET &&
- cmsg->cmsg_type == SCM_CREDENTIALS &&
- cmsg->cmsg_len == CMSG_LEN(sizeof(struct ucred))) {
-
- memcpy(&bus->ucred, CMSG_DATA(cmsg), sizeof(struct ucred));
- bus->ucred_valid = true;
-
- } else if (cmsg->cmsg_level == SOL_SOCKET &&
- cmsg->cmsg_type == SCM_SECURITY) {
-
- size_t l;
- l = cmsg->cmsg_len - CMSG_LEN(0);
- memcpy(&bus->label, CMSG_DATA(cmsg), l);
- bus->label[l] = 0;
- }
- }
-
- r = message_read_need(bus, &need);
- if (r < 0)
- return r;
-
- if (bus->rbuffer_size >= need)
- return message_make(bus, need, m);
-
- return 1;
-}
-
static int dispatch_wqueue(sd_bus *bus) {
int r, ret = 0;
@@ -1445,7 +918,7 @@ static int dispatch_wqueue(sd_bus *bus) {
while (bus->wqueue_size > 0) {
- r = message_write(bus, bus->wqueue[0], &bus->windex);
+ r = bus_socket_write_message(bus, bus->wqueue[0], &bus->windex);
if (r < 0) {
sd_bus_close(bus);
return r;
@@ -1497,7 +970,7 @@ static int dispatch_rqueue(sd_bus *bus, sd_bus_message **m) {
/* Try to read a new message */
do {
- r = message_read(bus, &z);
+ r = bus_socket_read_message(bus, &z);
if (r < 0) {
sd_bus_close(bus);
return r;
@@ -1549,7 +1022,7 @@ int sd_bus_send(sd_bus *bus, sd_bus_message *m, uint64_t *serial) {
if ((bus->state == BUS_RUNNING || bus->state == BUS_HELLO) && bus->wqueue_size <= 0) {
size_t idx = 0;
- r = message_write(bus, m, &idx);
+ r = bus_socket_write_message(bus, m, &idx);
if (r < 0) {
sd_bus_close(bus);
return r;
@@ -1791,7 +1264,7 @@ int sd_bus_send_with_reply_and_block(
room = true;
}
- r = message_read(bus, &incoming);
+ r = bus_socket_read_message(bus, &incoming);
if (r < 0)
return r;
if (incoming) {
@@ -2119,126 +1592,103 @@ static int process_message(sd_bus *bus, sd_bus_message *m) {
return process_object(bus, m);
}
-int sd_bus_process(sd_bus *bus, sd_bus_message **ret) {
+static int process_running(sd_bus *bus, sd_bus_message **ret) {
+ _cleanup_bus_message_unref_ sd_bus_message *m = NULL;
int r;
- /* Returns 0 when we didn't do anything. This should cause the
- * caller to invoke sd_bus_wait() before returning the next
- * time. Returns > 0 when we did something, which possibly
- * means *ret is filled in with an unprocessed message. */
-
- if (!bus)
- return -EINVAL;
- if (bus->state == BUS_UNSET)
- return -ENOTCONN;
- if (bus->fd < 0)
- return -ENOTCONN;
+ assert(bus);
+ assert(bus->state == BUS_RUNNING || bus->state == BUS_HELLO);
- if (bus->state == BUS_OPENING) {
- struct pollfd p;
+ r = process_timeout(bus);
+ if (r != 0)
+ goto null_message;
- zero(p);
- p.fd = bus->fd;
- p.events = POLLOUT;
+ r = dispatch_wqueue(bus);
+ if (r != 0)
+ goto null_message;
- r = poll(&p, 1, 0);
- if (r < 0)
- return -errno;
+ r = dispatch_rqueue(bus, &m);
+ if (r < 0)
+ return r;
+ if (!m)
+ goto null_message;
- if (p.revents & (POLLOUT|POLLERR|POLLHUP)) {
- int error = 0;
- socklen_t slen = sizeof(error);
+ r = process_message(bus, m);
+ if (r != 0)
+ goto null_message;
- r = getsockopt(bus->fd, SOL_SOCKET, SO_ERROR, &error, &slen);
- if (r < 0)
- bus->last_connect_error = errno;
- else if (error != 0)
- bus->last_connect_error = error;
- else if (p.revents & (POLLERR|POLLHUP))
- bus->last_connect_error = ECONNREFUSED;
- else {
- r = bus_start_auth(bus);
- goto null_message;
- }
+ if (ret) {
+ *ret = m;
+ m = NULL;
+ return 1;
+ }
- /* Try next address */
- bus_reset_parsed_address(bus);
- r = bus_start_connect(bus);
- goto null_message;
- }
+ if (m->header->type == SD_BUS_MESSAGE_TYPE_METHOD_CALL) {
+ _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
+ _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_INIT;
- r = 0;
- goto null_message;
+ sd_bus_error_set(&error, "org.freedesktop.DBus.Error.UnknownObject", "Unknown object '%s'.", m->path);
- } else if (bus->state == BUS_AUTHENTICATING) {
+ r = sd_bus_message_new_method_error(bus, m, &error, &reply);
+ if (r < 0)
+ return r;
- if (now(CLOCK_MONOTONIC) >= bus->auth_timeout)
- return -ETIMEDOUT;
+ r = sd_bus_send(bus, reply, NULL);
+ if (r < 0)
+ return r;
+ }
- r = bus_write_auth(bus);
- if (r != 0)
- goto null_message;
+ return 1;
- r = bus_read_auth(bus);
- goto null_message;
+null_message:
+ if (r >= 0 && ret)
+ *ret = NULL;
- } else if (bus->state == BUS_RUNNING || bus->state == BUS_HELLO) {
- _cleanup_bus_message_unref_ sd_bus_message *m = NULL;
- int k;
+ return r;
+}
- r = process_timeout(bus);
- if (r != 0)
- goto null_message;
+int sd_bus_process(sd_bus *bus, sd_bus_message **ret) {
+ int r;
- r = dispatch_wqueue(bus);
- if (r != 0)
- goto null_message;
+ /* Returns 0 when we didn't do anything. This should cause the
+ * caller to invoke sd_bus_wait() before returning the next
+ * time. Returns > 0 when we did something, which possibly
+ * means *ret is filled in with an unprocessed message. */
- k = r;
- r = dispatch_rqueue(bus, &m);
- if (r < 0)
- return r;
- if (!m) {
- if (r == 0)
- r = k;
- goto null_message;
- }
+ if (!bus)
+ return -EINVAL;
+ if (bus->fd < 0)
+ return -ENOTCONN;
- r = process_message(bus, m);
- if (r != 0)
- goto null_message;
+ switch (bus->state) {
- if (ret) {
- *ret = m;
- m = NULL;
- return 1;
- }
+ case BUS_UNSET:
+ return -ENOTCONN;
- if (m->header->type == SD_BUS_MESSAGE_TYPE_METHOD_CALL) {
- _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
- _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_INIT;
+ case BUS_OPENING:
+ r = bus_socket_process_opening(bus);
+ if (r < 0)
+ return r;
+ if (ret)
+ *ret = NULL;
+ return r;
- sd_bus_error_set(&error, "org.freedesktop.DBus.Error.UnknownObject", "Unknown object '%s'.", m->path);
+ case BUS_AUTHENTICATING:
- r = sd_bus_message_new_method_error(bus, m, &error, &reply);
- if (r < 0)
- return r;
+ r = bus_socket_process_authenticating(bus);
+ if (r < 0)
+ return r;
+ if (ret)
+ *ret = NULL;
+ return r;
- r = sd_bus_send(bus, reply, NULL);
- if (r < 0)
- return r;
- }
+ case BUS_RUNNING:
+ case BUS_HELLO:
- return 1;
+ return process_running(bus, ret);
}
assert_not_reached("Unknown state");
-
-null_message:
- if (r >= 0 && ret)
- *ret = NULL;
-
- return r;
}
static int bus_poll(sd_bus *bus, bool need_more, uint64_t timeout_usec) {
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-12-15 23:45:48 +0000