return fd;
}
+int open_serialization_fd(const char *ident) {
+ int fd = -1;
+
+ fd = memfd_create(ident, MFD_CLOEXEC);
+ if (fd < 0) {
+ const char *path;
+
+ path = getpid() == 1 ? "/run/systemd" : "/tmp";
+ fd = open_tmpfile_unlinkable(path, O_RDWR|O_CLOEXEC);
+ if (fd < 0)
+ return fd;
+
+ log_debug("Serializing %s to %s.", ident, path);
+ } else
+ log_debug("Serializing %s to memfd.", ident);
+
+ return fd;
+}
+
int link_tmpfile(int fd, const char *path, const char *target) {
assert(fd >= 0);
int open_tmpfile_unlinkable(const char *directory, int flags);
int open_tmpfile_linkable(const char *target, int flags, char **ret_path);
+int open_serialization_fd(const char *ident);
int link_tmpfile(int fd, const char *path, const char *target);
}
int manager_open_serialization(Manager *m, FILE **_f) {
- int fd = -1;
+ int fd;
FILE *f;
assert(_f);
- fd = memfd_create("systemd-serialization", MFD_CLOEXEC);
- if (fd < 0) {
- const char *path;
-
- path = MANAGER_IS_SYSTEM(m) ? "/run/systemd" : "/tmp";
- fd = open_tmpfile_unlinkable(path, O_RDWR|O_CLOEXEC);
- if (fd < 0)
- return -errno;
- log_debug("Serializing state to %s.", path);
- } else
- log_debug("Serializing state to memfd.");
+ fd = open_serialization_fd("systemd-state");
+ if (fd < 0)
+ return fd;
f = fdopen(fd, "w+");
if (!f) {
}
*_f = f;
-
return 0;
}
assert_se(same_fd(b, a) == 0);
}
+static void test_open_serialization_fd(void) {
+ _cleanup_close_ int fd = -1;
+
+ fd = open_serialization_fd("test");
+ assert_se(fd >= 0);
+
+ write(fd, "test\n", 5);
+}
+
int main(int argc, char *argv[]) {
test_close_many();
test_close_nointr();
test_same_fd();
+ test_open_serialization_fd();
return 0;
}