systemd: merge branch systemd into master

src/systemd/src/basic/fileio.c

@@ -39,6 +39,7 @@
 #include "hexdecoct.h"
 #include "log.h"
 #include "macro.h"
+#include "missing.h"
 #include "parse-util.h"
 #include "path-util.h"
 #include "random-util.h"
@@ -1287,12 +1288,10 @@ int open_tmpfile_unlinkable(const char *directory, int flags) {
 
         /* Returns an unlinked temporary file that cannot be linked into the file system anymore */
 
-#ifdef O_TMPFILE
         /* Try O_TMPFILE first, if it is supported */
         fd = open(directory, flags|O_TMPFILE|O_EXCL, S_IRUSR|S_IWUSR);
         if (fd >= 0)
                 return fd;
-#endif
 
         /* Fall back to unguessable name + unlinking */
         p = strjoina(directory, "/systemd-tmp-XXXXXX");
@@ -1320,7 +1319,6 @@ int open_tmpfile_linkable(const char *target, int flags, char **ret_path) {
          * which case "ret_path" will be returned as NULL. If not possible a the tempoary path name used is returned in
          * "ret_path". Use link_tmpfile() below to rename the result after writing the file in full. */
 
-#ifdef O_TMPFILE
         {
                 _cleanup_free_ char *dn = NULL;
 
@@ -1336,7 +1334,6 @@ int open_tmpfile_linkable(const char *target, int flags, char **ret_path) {
 
                 log_debug_errno(errno, "Failed to use O_TMPFILE on %s: %m", dn);
         }
-#endif
 
         r = tempfn_random(target, NULL, &tmp);
         if (r < 0)

src/systemd/src/basic/hostname-util.c

@@ -165,7 +165,6 @@ char* hostname_cleanup(char *s) {
                         *(d++) = *p;
                         dot = false;
                 }
-
         }
 
         if (dot && d > s)

src/systemd/src/basic/string-util.h

@@ -70,6 +70,10 @@ static inline const char *empty_to_null(const char *p) {
         return isempty(p) ? NULL : p;
 }
 
+static inline const char *strdash_if_empty(const char *str) {
+        return isempty(str) ? "-" : str;
+}
+
 static inline char *startswith(const char *s, const char *prefix) {
         size_t l;