util: make machine_name_is_valid() a macro and move it to hostname-util.h

As it turns out machine_name_is_valid() does the exact same thing as
hostname_is_valid() these days, as it just invoked that and checked the
name length was < 64. However, hostname_is_valid() checks the length
against HOST_NAME_MAX anyway (which is 64 on Linux), hence any
additional check is redundant.

We hence replace machine_name_is_valid() by a macro that simply maps it
to hostname_is_valid() but sets the allow_trailing_dot parameter to
false. We also move this this call to hostname-util.h, to the same place
as the hostname_is_valid() declaration.

19 files changed, 19 insertions, 18 deletions

diff --git a/src/basic/hostname-util.h b/src/basic/hostname-util.h
index 7c50260d73..d4f5bfe45e 100644
--- a/src/basic/hostname-util.h
+++ b/src/basic/hostname-util.h
@@ -32,6 +32,8 @@ char* gethostname_malloc(void);
 bool hostname_is_valid(const char *s, bool allow_trailing_dot) _pure_;
 char* hostname_cleanup(char *s);
 
+#define machine_name_is_valid(s) hostname_is_valid(s, false)
+
 bool is_localhost(const char *hostname);
 bool is_gateway_hostname(const char *hostname);
 
diff --git a/src/basic/util.c b/src/basic/util.c
index 9571f0ab12..deff68073c 100644
--- a/src/basic/util.c
+++ b/src/basic/util.c
@@ -3006,21 +3006,6 @@ char* strshorten(char *s, size_t l) {
         return s;
 }
 
-bool machine_name_is_valid(const char *s) {
-
-        if (!hostname_is_valid(s, false))
-                return false;
-
-        /* Machine names should be useful hostnames, but also be
-         * useful in unit names, hence we enforce a stricter length
-         * limitation. */
-
-        if (strlen(s) > 64)
-                return false;
-
-        return true;
-}
-
 int pipe_eof(int fd) {
         struct pollfd pollfd = {
                 .fd = fd,
diff --git a/src/basic/util.h b/src/basic/util.h
index 8f21d56ed8..1ead7b5419 100644
--- a/src/basic/util.h
+++ b/src/basic/util.h
@@ -394,8 +394,6 @@ bool nulstr_contains(const char*nulstr, const char *needle);
 
 bool plymouth_running(void);
 
-bool machine_name_is_valid(const char *s) _pure_;
-
 char* strshorten(char *s, size_t l);
 
 int symlink_idempotent(const char *from, const char *to);
diff --git a/src/import/export.c b/src/import/export.c
index ec7dbe210a..b88d71fec6 100644
--- a/src/import/export.c
+++ b/src/import/export.c
@@ -24,6 +24,7 @@
 #include "sd-event.h"
 #include "event-util.h"
 #include "signal-util.h"
+#include "hostname-util.h"
 #include "verbs.h"
 #include "build.h"
 #include "machine-image.h"
diff --git a/src/import/import-raw.c b/src/import/import-raw.c
index 43cd413042..a27e81bbd4 100644
--- a/src/import/import-raw.c
+++ b/src/import/import-raw.c
@@ -26,6 +26,7 @@
 #include "util.h"
 #include "path-util.h"
 #include "btrfs-util.h"
+#include "hostname-util.h"
 #include "copy.h"
 #include "mkdir.h"
 #include "rm-rf.h"
diff --git a/src/import/import-tar.c b/src/import/import-tar.c
index 2bf0b0680c..7ffe83cc33 100644
--- a/src/import/import-tar.c
+++ b/src/import/import-tar.c
@@ -26,6 +26,7 @@
 #include "util.h"
 #include "path-util.h"
 #include "btrfs-util.h"
+#include "hostname-util.h"
 #include "copy.h"
 #include "mkdir.h"
 #include "rm-rf.h"
diff --git a/src/import/import.c b/src/import/import.c
index b7772390e9..929a840298 100644
--- a/src/import/import.c
+++ b/src/import/import.c
@@ -26,6 +26,7 @@
 #include "verbs.h"
 #include "build.h"
 #include "signal-util.h"
+#include "hostname-util.h"
 #include "machine-image.h"
 #include "import-util.h"
 #include "import-tar.h"
diff --git a/src/import/importd.c b/src/import/importd.c
index dd314f5b00..8b508eaeec 100644
--- a/src/import/importd.c
+++ b/src/import/importd.c
@@ -35,6 +35,7 @@
 #include "import-util.h"
 #include "process-util.h"
 #include "signal-util.h"
+#include "hostname-util.h"
 
 typedef struct Transfer Transfer;
 typedef struct Manager Manager;
diff --git a/src/import/pull-raw.c b/src/import/pull-raw.c
index 5bfaf012c0..d0e0faa261 100644
--- a/src/import/pull-raw.c
+++ b/src/import/pull-raw.c
@@ -33,6 +33,7 @@
 #include "mkdir.h"
 #include "rm-rf.h"
 #include "path-util.h"
+#include "hostname-util.h"
 #include "import-util.h"
 #include "import-common.h"
 #include "curl-util.h"
diff --git a/src/import/pull-tar.c b/src/import/pull-tar.c
index 71b8908a58..d38a2158c4 100644
--- a/src/import/pull-tar.c
+++ b/src/import/pull-tar.c
@@ -32,13 +32,14 @@
 #include "mkdir.h"
 #include "rm-rf.h"
 #include "path-util.h"
+#include "process-util.h"
+#include "hostname-util.h"
 #include "import-util.h"
 #include "import-common.h"
 #include "curl-util.h"
 #include "pull-job.h"
 #include "pull-common.h"
 #include "pull-tar.h"
-#include "process-util.h"
 
 typedef enum TarProgress {
         TAR_DOWNLOADING,
diff --git a/src/import/pull.c b/src/import/pull.c
index ca7be6be85..e13cd6af97 100644
--- a/src/import/pull.c
+++ b/src/import/pull.c
@@ -26,6 +26,7 @@
 #include "verbs.h"
 #include "build.h"
 #include "signal-util.h"
+#include "hostname-util.h"
 #include "machine-image.h"
 #include "import-util.h"
 #include "pull-tar.h"
diff --git a/src/journal/sd-journal.c b/src/journal/sd-journal.c
index bfd1901e16..13fa9b52fc 100644
--- a/src/journal/sd-journal.c
+++ b/src/journal/sd-journal.c
@@ -43,6 +43,7 @@
 #include "replace-var.h"
 #include "fileio.h"
 #include "formats-util.h"
+#include "hostname-util.h"
 
 #define JOURNAL_FILES_MAX 7168
 
diff --git a/src/libsystemd/sd-bus/sd-bus.c b/src/libsystemd/sd-bus/sd-bus.c
index db4f21e9ff..31cdcb4e5b 100644
--- a/src/libsystemd/sd-bus/sd-bus.c
+++ b/src/libsystemd/sd-bus/sd-bus.c
@@ -33,6 +33,7 @@
 #include "missing.h"
 #include "def.h"
 #include "cgroup-util.h"
+#include "hostname-util.h"
 #include "bus-label.h"
 
 #include "sd-bus.h"
diff --git a/src/libsystemd/sd-login/sd-login.c b/src/libsystemd/sd-login/sd-login.c
index 9bbf8974dd..5f290573cb 100644
--- a/src/libsystemd/sd-login/sd-login.c
+++ b/src/libsystemd/sd-login/sd-login.c
@@ -32,6 +32,7 @@
 #include "fileio.h"
 #include "login-util.h"
 #include "formats-util.h"
+#include "hostname-util.h"
 #include "sd-login.h"
 
 _public_ int sd_pid_get_session(pid_t pid, char **session) {
diff --git a/src/machine/machinectl.c b/src/machine/machinectl.c
index 8e75508444..72b9a619d2 100644
--- a/src/machine/machinectl.c
+++ b/src/machine/machinectl.c
@@ -56,6 +56,7 @@
 #include "terminal-util.h"
 #include "signal-util.h"
 #include "env-util.h"
+#include "hostname-util.h"
 
 static char **arg_property = NULL;
 static bool arg_all = false;
diff --git a/src/machine/machined-dbus.c b/src/machine/machined-dbus.c
index 93514986f3..03625ba4cd 100644
--- a/src/machine/machined-dbus.c
+++ b/src/machine/machined-dbus.c
@@ -33,6 +33,7 @@
 #include "btrfs-util.h"
 #include "formats-util.h"
 #include "process-util.h"
+#include "hostname-util.h"
 #include "machine-image.h"
 #include "machine-pool.h"
 #include "image-dbus.h"
diff --git a/src/machine/machined.c b/src/machine/machined.c
index c8ad157326..109bab76c5 100644
--- a/src/machine/machined.c
+++ b/src/machine/machined.c
@@ -30,6 +30,7 @@
 #include "label.h"
 #include "formats-util.h"
 #include "signal-util.h"
+#include "hostname-util.h"
 #include "machine-image.h"
 #include "machined.h"
 
diff --git a/src/nss-mymachines/nss-mymachines.c b/src/nss-mymachines/nss-mymachines.c
index cdec83d074..5758ea1569 100644
--- a/src/nss-mymachines/nss-mymachines.c
+++ b/src/nss-mymachines/nss-mymachines.c
@@ -30,6 +30,7 @@
 #include "bus-util.h"
 #include "bus-common-errors.h"
 #include "in-addr-util.h"
+#include "hostname-util.h"
 
 NSS_GETHOSTBYNAME_PROTOTYPES(mymachines);
 NSS_GETPW_PROTOTYPES(mymachines);
diff --git a/src/shared/logs-show.c b/src/shared/logs-show.c
index 60144ab8a6..9a5ffb7a6c 100644
--- a/src/shared/logs-show.c
+++ b/src/shared/logs-show.c
@@ -34,6 +34,7 @@
 #include "formats-util.h"
 #include "process-util.h"
 #include "terminal-util.h"
+#include "hostname-util.h"
 
 /* up to three lines (each up to 100 characters),
    or 300 characters, whichever is less */