Prep v228: Apply more cosmetic changes found in upstream.

[elogind.git] / src / libelogind / sd-bus / bus-kernel.c

diff --git a/src/libelogind/sd-bus/bus-kernel.c b/src/libelogind/sd-bus/bus-kernel.c
index 572a9c6e6404796fdadf552bd85f5589597b4339..ae53b7dec8cf3072c6267a3b9153f5a7e80fe426 100644 (file)
--- a/src/libelogind/sd-bus/bus-kernel.c
+++ b/src/libelogind/sd-bus/bus-kernel.c
@@ -29,24 +29,28 @@
 #include <sys/prctl.h>
 
 /* When we include libgen.h because we need dirname() we immediately
- * undefine basename() since libgen.h defines it as a macro to the XDG
- * version which is really broken. */
+ * undefine basename() since libgen.h defines it as a macro to the POSIX
+ * version which is really broken. We prefer GNU basename(). */
 #include <libgen.h>
 #undef basename
 
-#include "util.h"
-#include "strv.h"
-#include "memfd-util.h"
-#include "capability.h"
-#include "fileio.h"
-#include "formats-util.h"
-
+#include "alloc-util.h"
+#include "bus-bloom.h"
 #include "bus-internal.h"
-#include "bus-message.h"
 #include "bus-kernel.h"
-#include "bus-bloom.h"
-#include "bus-util.h"
 #include "bus-label.h"
+#include "bus-message.h"
+#include "bus-util.h"
+#include "capability-util.h"
+#include "fd-util.h"
+#include "fileio.h"
+#include "formats-util.h"
+#include "memfd-util.h"
+#include "parse-util.h"
+#include "string-util.h"
+#include "strv.h"
+#include "user-util.h"
+#include "util.h"
 
 #define UNIQUE_NAME_MAX (3+DECIMAL_STR_MAX(uint64_t))
 
@@ -168,6 +172,27 @@ static void add_bloom_arg(void *data, size_t size, unsigned n_hash, unsigned i,
         bloom_add_prefixes(data, size, n_hash, buf, t, '/');
 }
 
+static void add_bloom_arg_has(void *data, size_t size, unsigned n_hash, unsigned i, const char *t) {
+        char buf[sizeof("arg")-1 + 2 + sizeof("-has")];
+        char *e;
+
+        assert(data);
+        assert(size > 0);
+        assert(i < 64);
+        assert(t);
+
+        e = stpcpy(buf, "arg");
+        if (i < 10)
+                *(e++) = '0' + (char) i;
+        else {
+                *(e++) = '0' + (char) (i / 10);
+                *(e++) = '0' + (char) (i % 10);
+        }
+
+        strcpy(e, "-has");
+        bloom_add_pair(data, size, n_hash, buf, t);
+}
+
 static int bus_message_setup_bloom(sd_bus_message *m, struct kdbus_bloom_filter *bloom) {
         void *data;
         unsigned i;
@@ -212,7 +237,9 @@ static int bus_message_setup_bloom(sd_bus_message *m, struct kdbus_bloom_filter
                                 return r;
 
                         add_bloom_arg(data, m->bus->bloom_size, m->bus->bloom_n_hash, i, t);
-                } if (type == SD_BUS_TYPE_ARRAY && STR_IN_SET(contents, "s", "o", "g")) {
+                }
+
+                if (type == SD_BUS_TYPE_ARRAY && STR_IN_SET(contents, "s", "o", "g")) {
 
                         /* As well as array of simple strings of any kinds */
                         r = sd_bus_message_enter_container(m, type, contents);
@@ -220,7 +247,7 @@ static int bus_message_setup_bloom(sd_bus_message *m, struct kdbus_bloom_filter
                                 return r;
 
                         while ((r = sd_bus_message_read_basic(m, contents[0], &t)) > 0)
-                                add_bloom_arg(data, m->bus->bloom_size, m->bus->bloom_n_hash, i, t);
+                                add_bloom_arg_has(data, m->bus->bloom_size, m->bus->bloom_n_hash, i, t);
                         if (r < 0)
                                 return r;
 
@@ -498,7 +525,6 @@ static int bus_kernel_make_message(sd_bus *bus, struct kdbus_msg *k) {
                         footer, footer_size,
                         n_bytes,
                         fds, n_fds,
-                        NULL,
                         seclabel, 0, &m);
         if (r < 0)
                 return r;
@@ -775,6 +801,7 @@ static int bus_kernel_make_message(sd_bus *bus, struct kdbus_msg *k) {
 
                 case KDBUS_ITEM_FDS:
                 case KDBUS_ITEM_SECLABEL:
+                case KDBUS_ITEM_BLOOM_FILTER:
                         break;
 
                 default:
@@ -1333,8 +1360,7 @@ static int bus_kernel_translate_message(sd_bus *bus, struct kdbus_msg *k) {
         KDBUS_ITEM_FOREACH(d, k, items) {
                 if (d->type == KDBUS_ITEM_TIMESTAMP)
                         ts = &d->timestamp;
-
-                if (d->type >= _KDBUS_ITEM_KERNEL_BASE && d->type < _KDBUS_ITEM_KERNEL_BASE + ELEMENTSOF(translate)) {
+                else if (d->type >= _KDBUS_ITEM_KERNEL_BASE && d->type < _KDBUS_ITEM_KERNEL_BASE + ELEMENTSOF(translate)) {
                         if (found)
                                 return -EBADMSG;
                         found = d;
@@ -1386,15 +1412,16 @@ int bus_kernel_read_message(sd_bus *bus, bool hint_priority, int64_t priority) {
                         r = 0;
                 }
 
-        } else if (k->payload_type == KDBUS_PAYLOAD_KERNEL)
+                if (r <= 0)
+                        close_kdbus_msg(bus, k);
+        } else if (k->payload_type == KDBUS_PAYLOAD_KERNEL) {
                 r = bus_kernel_translate_message(bus, k);
-        else {
+                close_kdbus_msg(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;
 }
@@ -1410,12 +1437,12 @@ int bus_kernel_pop_memfd(sd_bus *bus, void **address, size_t *mapped, size_t *al
         if (!bus || !bus->is_kernel)
                 return -EOPNOTSUPP;
 
-        assert_se(pthread_mutex_lock(&bus->memfd_cache_mutex) >= 0);
+        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);
+                assert_se(pthread_mutex_unlock(&bus->memfd_cache_mutex) == 0);
 
                 r = memfd_new(bus->description);
                 if (r < 0)
@@ -1437,7 +1464,7 @@ int bus_kernel_pop_memfd(sd_bus *bus, void **address, size_t *mapped, size_t *al
         *allocated = c->allocated;
         fd = c->fd;
 
-        assert_se(pthread_mutex_unlock(&bus->memfd_cache_mutex) >= 0);
+        assert_se(pthread_mutex_unlock(&bus->memfd_cache_mutex) == 0);
 
         return fd;
 }
@@ -1461,10 +1488,10 @@ void bus_kernel_push_memfd(sd_bus *bus, int fd, void *address, size_t mapped, si
                 return;
         }
 
-        assert_se(pthread_mutex_lock(&bus->memfd_cache_mutex) >= 0);
+        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);
+                assert_se(pthread_mutex_unlock(&bus->memfd_cache_mutex) == 0);
 
                 close_and_munmap(fd, address, mapped);
                 return;
@@ -1484,7 +1511,7 @@ void bus_kernel_push_memfd(sd_bus *bus, int fd, void *address, size_t mapped, si
                 c->allocated = allocated;
         }
 
-        assert_se(pthread_mutex_unlock(&bus->memfd_cache_mutex) >= 0);
+        assert_se(pthread_mutex_unlock(&bus->memfd_cache_mutex) == 0);
 }
 
 void bus_kernel_flush_memfd(sd_bus *b) {
@@ -1557,6 +1584,8 @@ uint64_t attach_flags_to_kdbus(uint64_t mask) {
         return m;
 }
 
+/// UNNEEDED by elogind
+#if 0
 int bus_kernel_create_bus(const char *name, bool world, char **s) {
         struct kdbus_cmd *make;
         struct kdbus_item *n;
@@ -1632,6 +1661,7 @@ int bus_kernel_create_bus(const char *name, bool world, char **s) {
 
         return fd;
 }
+#endif // 0
 
 int bus_kernel_open_bus_fd(const char *bus, char **path) {
         char *p;
@@ -1665,6 +1695,8 @@ int bus_kernel_open_bus_fd(const char *bus, char **path) {
         return fd;
 }
 
+/// UNNEEDED by elogind
+#if 0
 int bus_kernel_create_endpoint(const char *bus_name, const char *ep_name, char **ep_path) {
         _cleanup_free_ char *path = NULL;
         struct kdbus_cmd *make;
@@ -1708,6 +1740,7 @@ int bus_kernel_create_endpoint(const char *bus_name, const char *ep_name, char *
 
         return fd;
 }
+#endif // 0
 
 int bus_kernel_try_close(sd_bus *bus) {
         struct kdbus_cmd byebye = { .size = sizeof(byebye) };
@@ -1721,6 +1754,8 @@ int bus_kernel_try_close(sd_bus *bus) {
         return 0;
 }
 
+/// UNNEEDED by elogind
+#if 0
 int bus_kernel_drop_one(int fd) {
         struct kdbus_cmd_recv recv = {
                 .size = sizeof(recv),
@@ -1734,6 +1769,7 @@ int bus_kernel_drop_one(int fd) {
 
         return 0;
 }
+#endif // 0
 
 int bus_kernel_realize_attach_flags(sd_bus *bus) {
         struct kdbus_cmd *update;