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-rw-r--r--src/libsystemd-bus/bus-kernel.c177
-rw-r--r--src/libsystemd-bus/kdbus.h5
-rw-r--r--src/libsystemd-bus/sd-bus.c40
3 files changed, 109 insertions, 113 deletions
diff --git a/src/libsystemd-bus/bus-kernel.c b/src/libsystemd-bus/bus-kernel.c
index 69143434b3..1cab2544ec 100644
--- a/src/libsystemd-bus/bus-kernel.c
+++ b/src/libsystemd-bus/bus-kernel.c
@@ -605,39 +605,6 @@ static int bus_kernel_translate_message(sd_bus *bus, struct kdbus_msg *k) {
return translate[found->type - _KDBUS_ITEM_KERNEL_BASE](bus, k, found);
}
-int kdbus_translate_attach_flags(uint64_t mask, uint64_t *kdbus_mask) {
-
- uint64_t m = 0;
-
- SET_FLAG(m, KDBUS_ATTACH_CREDS,
- !!(mask & (SD_BUS_CREDS_UID|SD_BUS_CREDS_GID|SD_BUS_CREDS_PID|SD_BUS_CREDS_PID_STARTTIME|SD_BUS_CREDS_TID)));
-
- SET_FLAG(m, KDBUS_ATTACH_COMM,
- !!(mask & (SD_BUS_CREDS_COMM|SD_BUS_CREDS_TID_COMM)));
-
- SET_FLAG(m, KDBUS_ATTACH_EXE,
- !!(mask & SD_BUS_CREDS_EXE));
-
- SET_FLAG(m, KDBUS_ATTACH_CMDLINE,
- !!(mask & SD_BUS_CREDS_CMDLINE));
-
- SET_FLAG(m, KDBUS_ATTACH_CGROUP,
- !!(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)));
-
- SET_FLAG(m, KDBUS_ATTACH_CAPS,
- !!(mask & (SD_BUS_CREDS_EFFECTIVE_CAPS|SD_BUS_CREDS_PERMITTED_CAPS|SD_BUS_CREDS_INHERITABLE_CAPS|SD_BUS_CREDS_BOUNDING_CAPS)));
-
- SET_FLAG(m, KDBUS_ATTACH_SECLABEL,
- !!(mask & SD_BUS_CREDS_SELINUX_CONTEXT));
-
- SET_FLAG(m, KDBUS_ATTACH_AUDIT,
- !!(mask & (SD_BUS_CREDS_AUDIT_SESSION_ID|SD_BUS_CREDS_AUDIT_LOGIN_UID)));
-
- *kdbus_mask = m;
-
- return 0;
-}
-
static int bus_kernel_make_message(sd_bus *bus, struct kdbus_msg *k) {
sd_bus_message *m = NULL;
struct kdbus_item *d;
@@ -923,52 +890,6 @@ int bus_kernel_read_message(sd_bus *bus) {
return r < 0 ? r : 1;
}
-int bus_kernel_create(const char *name, char **s) {
- struct kdbus_cmd_bus_make *make;
- struct kdbus_item *n;
- size_t l;
- int fd;
- char *p;
-
- assert(name);
- assert(s);
-
- fd = open("/dev/kdbus/control", O_RDWR|O_NOCTTY|O_CLOEXEC);
- if (fd < 0)
- return -errno;
-
- l = strlen(name);
- make = alloca0(offsetof(struct kdbus_cmd_bus_make, items) +
- KDBUS_PART_HEADER_SIZE + sizeof(uint64_t) +
- KDBUS_PART_HEADER_SIZE + DECIMAL_STR_MAX(uid_t) + 1 + l + 1);
-
- n = make->items;
- n->type = KDBUS_MAKE_NAME;
- sprintf(n->str, "%lu-%s", (unsigned long) getuid(), name);
- n->size = KDBUS_PART_HEADER_SIZE + strlen(n->str) + 1;
-
- make->size = offsetof(struct kdbus_cmd_bus_make, items) + n->size;
- make->flags = KDBUS_MAKE_POLICY_OPEN;
- make->bus_flags = 0;
- make->bloom_size = BLOOM_SIZE;
- assert_cc(BLOOM_SIZE % 8 == 0);
-
- p = strjoin("/dev/kdbus/", n->str, "/bus", NULL);
- if (!p)
- return -ENOMEM;
-
- if (ioctl(fd, KDBUS_CMD_BUS_MAKE, make) < 0) {
- close_nointr_nofail(fd);
- free(p);
- return -errno;
- }
-
- if (s)
- *s = p;
-
- return fd;
-}
-
int bus_kernel_pop_memfd(sd_bus *bus, void **address, size_t *size) {
struct memfd_cache *c;
int fd;
@@ -1061,20 +982,100 @@ void bus_kernel_flush_memfd(sd_bus *b) {
close_and_munmap(b->memfd_cache[i].fd, b->memfd_cache[i].address, b->memfd_cache[i].size);
}
-int kdbus_translate_request_name_flags(uint64_t sd_bus_flags, uint64_t *kdbus_flags) {
+int kdbus_translate_request_name_flags(uint64_t flags, uint64_t *kdbus_flags) {
+ uint64_t f = 0;
- assert_return(kdbus_flags != NULL, -EINVAL);
+ assert(kdbus_flags);
- *kdbus_flags = 0;
+ if (flags & SD_BUS_NAME_ALLOW_REPLACEMENT)
+ f |= KDBUS_NAME_ALLOW_REPLACEMENT;
- if (sd_bus_flags & SD_BUS_NAME_ALLOW_REPLACEMENT)
- *kdbus_flags |= KDBUS_NAME_ALLOW_REPLACEMENT;
+ if (flags & SD_BUS_NAME_REPLACE_EXISTING)
+ f |= KDBUS_NAME_REPLACE_EXISTING;
- if (sd_bus_flags & SD_BUS_NAME_REPLACE_EXISTING)
- *kdbus_flags |= KDBUS_NAME_REPLACE_EXISTING;
+ if (!(flags & SD_BUS_NAME_DO_NOT_QUEUE))
+ f |= KDBUS_NAME_QUEUE;
- if (!(sd_bus_flags & SD_BUS_NAME_DO_NOT_QUEUE))
- *kdbus_flags |= KDBUS_NAME_QUEUE;
+ *kdbus_flags = f;
+ return 0;
+}
+
+int kdbus_translate_attach_flags(uint64_t mask, uint64_t *kdbus_mask) {
+ uint64_t m = 0;
+
+ assert(kdbus_mask);
+
+ if (mask & (SD_BUS_CREDS_UID|SD_BUS_CREDS_GID|SD_BUS_CREDS_PID|SD_BUS_CREDS_PID_STARTTIME|SD_BUS_CREDS_TID))
+ m |= KDBUS_ATTACH_CREDS;
+
+ if (mask & (SD_BUS_CREDS_COMM|SD_BUS_CREDS_TID_COMM))
+ m |= KDBUS_ATTACH_COMM;
+
+ if (mask & SD_BUS_CREDS_EXE)
+ m |= KDBUS_ATTACH_EXE;
+
+ if (mask & SD_BUS_CREDS_CMDLINE)
+ m |= KDBUS_ATTACH_CMDLINE;
+
+ if (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))
+ m |= KDBUS_ATTACH_CGROUP;
+
+ if (mask & (SD_BUS_CREDS_EFFECTIVE_CAPS|SD_BUS_CREDS_PERMITTED_CAPS|SD_BUS_CREDS_INHERITABLE_CAPS|SD_BUS_CREDS_BOUNDING_CAPS))
+ m |= KDBUS_ATTACH_CAPS;
+
+ if (mask & SD_BUS_CREDS_SELINUX_CONTEXT)
+ m |= KDBUS_ATTACH_SECLABEL;
+ if (mask & (SD_BUS_CREDS_AUDIT_SESSION_ID|SD_BUS_CREDS_AUDIT_LOGIN_UID))
+ m |= KDBUS_ATTACH_AUDIT;
+
+ *kdbus_mask = m;
return 0;
}
+
+int bus_kernel_create(const char *name, char **s) {
+ struct kdbus_cmd_bus_make *make;
+ struct kdbus_item *n;
+ int fd;
+
+ assert(name);
+ assert(s);
+
+ fd = open("/dev/kdbus/control", O_RDWR|O_NOCTTY|O_CLOEXEC);
+ if (fd < 0)
+ return -errno;
+
+ make = alloca0(ALIGN8(offsetof(struct kdbus_cmd_bus_make, items) +
+ offsetof(struct kdbus_item, str) +
+ DECIMAL_STR_MAX(uid_t) + 1 + strlen(name) + 1));
+
+ n = make->items;
+ sprintf(n->str, "%lu-%s", (unsigned long) getuid(), name);
+ n->size = offsetof(struct kdbus_item, str) + strlen(n->str) + 1;
+ n->type = KDBUS_MAKE_NAME;
+
+ make->size = ALIGN8(offsetof(struct kdbus_cmd_bus_make, items) + n->size);
+ make->flags = KDBUS_MAKE_POLICY_OPEN;
+ make->bus_flags = 0;
+ make->bloom_size = BLOOM_SIZE;
+ assert_cc(BLOOM_SIZE % 8 == 0);
+
+ if (ioctl(fd, KDBUS_CMD_BUS_MAKE, make) < 0) {
+ close_nointr_nofail(fd);
+ return -errno;
+ }
+
+ if (s) {
+ char *p;
+
+ p = strjoin("/dev/kdbus/", n->str, "/bus", NULL);
+ if (!p) {
+ close_nointr_nofail(fd);
+ return -ENOMEM;
+ }
+
+ *s = p;
+ }
+
+ return fd;
+}
diff --git a/src/libsystemd-bus/kdbus.h b/src/libsystemd-bus/kdbus.h
index c9377ea277..bfd299bd26 100644
--- a/src/libsystemd-bus/kdbus.h
+++ b/src/libsystemd-bus/kdbus.h
@@ -297,11 +297,6 @@ enum {
enum {
_KDBUS_MAKE_NULL,
KDBUS_MAKE_NAME,
- KDBUS_MAKE_CRED, /* allow translator services which connect
- * to the bus on behalf of somebody else,
- * allow specifying the credentials of the
- * client to connect on behalf on. Needs
- * privileges */
};
struct kdbus_cmd_bus_make {
diff --git a/src/libsystemd-bus/sd-bus.c b/src/libsystemd-bus/sd-bus.c
index 8ffc9a9eff..0d5deb6c6d 100644
--- a/src/libsystemd-bus/sd-bus.c
+++ b/src/libsystemd-bus/sd-bus.c
@@ -986,15 +986,13 @@ _public_ int sd_bus_open_system(sd_bus **ret) {
return r;
e = secure_getenv("DBUS_SYSTEM_BUS_ADDRESS");
- if (e) {
+ if (e)
r = sd_bus_set_address(b, e);
- if (r < 0)
- goto fail;
- } else {
- b->sockaddr.un.sun_family = AF_UNIX;
- strncpy(b->sockaddr.un.sun_path, "/run/dbus/system_bus_socket", sizeof(b->sockaddr.un.sun_path));
- b->sockaddr_size = offsetof(struct sockaddr_un, sun_path) + sizeof("/run/dbus/system_bus_socket") - 1;
- }
+ else
+ r = sd_bus_set_address(b, "kernel:path=/dev/kdbus/0-system/bus;unix:path=/run/dbus/system_bus_socket");
+
+ if (r < 0)
+ goto fail;
b->bus_client = true;
@@ -1013,7 +1011,6 @@ fail:
_public_ int sd_bus_open_user(sd_bus **ret) {
const char *e;
sd_bus *b;
- size_t l;
int r;
assert_return(ret, -EINVAL);
@@ -1029,20 +1026,23 @@ _public_ int sd_bus_open_user(sd_bus **ret) {
goto fail;
} else {
e = secure_getenv("XDG_RUNTIME_DIR");
- if (!e) {
- r = -ENOENT;
- goto fail;
- }
+ if (e) {
+ _cleanup_free_ char *ee = NULL;
+
+ ee = bus_address_escape(e);
+ if (!ee) {
+ r = -ENOENT;
+ goto fail;
+ }
- l = strlen(e);
- if (l + 4 > sizeof(b->sockaddr.un.sun_path)) {
- r = -E2BIG;
+ asprintf(&b->address, "kernel:path=/dev/kdbus/%lu-user/bus;unix:path=%s/bus", (unsigned long) getuid(), ee);
+ } else
+ asprintf(&b->address, "kernel:path=/dev/kdbus/%lu-user/bus", (unsigned long) getuid());
+
+ if (!b->address) {
+ r = -ENOMEM;
goto fail;
}
-
- b->sockaddr.un.sun_family = AF_UNIX;
- memcpy(mempcpy(b->sockaddr.un.sun_path, e, l), "/bus", 4);
- b->sockaddr_size = offsetof(struct sockaddr_un, sun_path) + l + 4;
}
b->bus_client = true;
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-09-16 20:17:10 +0000