summaryrefslogtreecommitdiff
path: root/src/libsystemd/src/sd-bus/test-bus-zero-copy.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/libsystemd/src/sd-bus/test-bus-zero-copy.c')
-rw-r--r--src/libsystemd/src/sd-bus/test-bus-zero-copy.c211
1 files changed, 211 insertions, 0 deletions
diff --git a/src/libsystemd/src/sd-bus/test-bus-zero-copy.c b/src/libsystemd/src/sd-bus/test-bus-zero-copy.c
new file mode 100644
index 0000000000..32ff9c0364
--- /dev/null
+++ b/src/libsystemd/src/sd-bus/test-bus-zero-copy.c
@@ -0,0 +1,211 @@
+/***
+ This file is part of systemd.
+
+ Copyright 2013 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <sys/mman.h>
+
+#include <systemd/sd-bus.h>
+
+#include "systemd-basic/alloc-util.h"
+#include "systemd-basic/fd-util.h"
+#include "systemd-basic/log.h"
+#include "systemd-basic/memfd-util.h"
+#include "systemd-basic/string-util.h"
+#include "systemd-basic/util.h"
+
+#include "bus-dump.h"
+#include "bus-kernel.h"
+#include "bus-message.h"
+
+#define FIRST_ARRAY 17
+#define SECOND_ARRAY 33
+
+#define STRING_SIZE 123
+
+int main(int argc, char *argv[]) {
+ _cleanup_free_ char *name = NULL, *bus_name = NULL, *address = NULL;
+ const char *unique;
+ uint8_t *p;
+ sd_bus *a, *b;
+ int r, bus_ref;
+ sd_bus_message *m;
+ int f;
+ uint64_t sz;
+ uint32_t u32;
+ size_t i, l;
+ char *s;
+ _cleanup_close_ int sfd = -1;
+
+ log_set_max_level(LOG_DEBUG);
+
+ assert_se(asprintf(&name, "deine-mutter-%u", (unsigned) getpid()) >= 0);
+
+ bus_ref = bus_kernel_create_bus(name, false, &bus_name);
+ if (bus_ref == -ENOENT)
+ return EXIT_TEST_SKIP;
+
+ assert_se(bus_ref >= 0);
+
+ address = strappend("kernel:path=", bus_name);
+ assert_se(address);
+
+ r = sd_bus_new(&a);
+ assert_se(r >= 0);
+
+ r = sd_bus_new(&b);
+ assert_se(r >= 0);
+
+ r = sd_bus_set_address(a, address);
+ assert_se(r >= 0);
+
+ r = sd_bus_set_address(b, address);
+ assert_se(r >= 0);
+
+ r = sd_bus_start(a);
+ assert_se(r >= 0);
+
+ r = sd_bus_start(b);
+ assert_se(r >= 0);
+
+ r = sd_bus_get_unique_name(a, &unique);
+ assert_se(r >= 0);
+
+ r = sd_bus_message_new_method_call(b, &m, unique, "/a/path", "an.inter.face", "AMethod");
+ assert_se(r >= 0);
+
+ r = sd_bus_message_open_container(m, 'r', "aysay");
+ assert_se(r >= 0);
+
+ r = sd_bus_message_append_array_space(m, 'y', FIRST_ARRAY, (void**) &p);
+ assert_se(r >= 0);
+
+ p[0] = '<';
+ memset(p+1, 'L', FIRST_ARRAY-2);
+ p[FIRST_ARRAY-1] = '>';
+
+ f = memfd_new_and_map(NULL, STRING_SIZE, (void**) &s);
+ assert_se(f >= 0);
+
+ s[0] = '<';
+ for (i = 1; i < STRING_SIZE-2; i++)
+ s[i] = '0' + (i % 10);
+ s[STRING_SIZE-2] = '>';
+ s[STRING_SIZE-1] = 0;
+ munmap(s, STRING_SIZE);
+
+ r = memfd_get_size(f, &sz);
+ assert_se(r >= 0);
+ assert_se(sz == STRING_SIZE);
+
+ r = sd_bus_message_append_string_memfd(m, f, 0, (uint64_t) -1);
+ assert_se(r >= 0);
+
+ close(f);
+
+ f = memfd_new_and_map(NULL, SECOND_ARRAY, (void**) &p);
+ assert_se(f >= 0);
+
+ p[0] = '<';
+ memset(p+1, 'P', SECOND_ARRAY-2);
+ p[SECOND_ARRAY-1] = '>';
+ munmap(p, SECOND_ARRAY);
+
+ r = memfd_get_size(f, &sz);
+ assert_se(r >= 0);
+ assert_se(sz == SECOND_ARRAY);
+
+ r = sd_bus_message_append_array_memfd(m, 'y', f, 0, (uint64_t) -1);
+ assert_se(r >= 0);
+
+ close(f);
+
+ r = sd_bus_message_close_container(m);
+ assert_se(r >= 0);
+
+ r = sd_bus_message_append(m, "u", 4711);
+ assert_se(r >= 0);
+
+ assert_se((sfd = memfd_new_and_map(NULL, 6, (void**) &p)) >= 0);
+ memcpy(p, "abcd\0", 6);
+ munmap(p, 6);
+ assert_se(sd_bus_message_append_string_memfd(m, sfd, 1, 4) >= 0);
+
+ r = bus_message_seal(m, 55, 99*USEC_PER_SEC);
+ assert_se(r >= 0);
+
+ bus_message_dump(m, stdout, BUS_MESSAGE_DUMP_WITH_HEADER);
+
+ r = sd_bus_send(b, m, NULL);
+ assert_se(r >= 0);
+
+ sd_bus_message_unref(m);
+
+ r = sd_bus_process(a, &m);
+ assert_se(r > 0);
+
+ bus_message_dump(m, stdout, BUS_MESSAGE_DUMP_WITH_HEADER);
+ sd_bus_message_rewind(m, true);
+
+ r = sd_bus_message_enter_container(m, 'r', "aysay");
+ assert_se(r > 0);
+
+ r = sd_bus_message_read_array(m, 'y', (const void**) &p, &l);
+ assert_se(r > 0);
+ assert_se(l == FIRST_ARRAY);
+
+ assert_se(p[0] == '<');
+ for (i = 1; i < l-1; i++)
+ assert_se(p[i] == 'L');
+ assert_se(p[l-1] == '>');
+
+ r = sd_bus_message_read(m, "s", &s);
+ assert_se(r > 0);
+
+ assert_se(s[0] == '<');
+ for (i = 1; i < STRING_SIZE-2; i++)
+ assert_se(s[i] == (char) ('0' + (i % 10)));
+ assert_se(s[STRING_SIZE-2] == '>');
+ assert_se(s[STRING_SIZE-1] == 0);
+
+ r = sd_bus_message_read_array(m, 'y', (const void**) &p, &l);
+ assert_se(r > 0);
+ assert_se(l == SECOND_ARRAY);
+
+ assert_se(p[0] == '<');
+ for (i = 1; i < l-1; i++)
+ assert_se(p[i] == 'P');
+ assert_se(p[l-1] == '>');
+
+ r = sd_bus_message_exit_container(m);
+ assert_se(r > 0);
+
+ r = sd_bus_message_read(m, "u", &u32);
+ assert_se(r > 0);
+ assert_se(u32 == 4711);
+
+ r = sd_bus_message_read(m, "s", &s);
+ assert_se(r > 0);
+ assert_se(streq_ptr(s, "bcd"));
+
+ sd_bus_message_unref(m);
+
+ sd_bus_unref(a);
+ sd_bus_unref(b);
+
+ return 0;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-01 12:36:23 +0000