Mark *data and *userdata params to specifier_printf() as const

It would be very wrong if any of the specfier printf calls modified
any of the objects or data being printed. Let's mark all arguments as const
(primarily to make it easier for the reader to see where modifications cannot
occur).

1 files changed, 23 insertions, 23 deletions

diff --git a/src/core/unit-printf.c b/src/core/unit-printf.c
index f57c099c39..a8e84ebe80 100644
--- a/src/core/unit-printf.c
+++ b/src/core/unit-printf.c
@@ -12,25 +12,25 @@
 #include "unit.h"
 #include "user-util.h"
 
-static int specifier_prefix_and_instance(char specifier, void *data, void *userdata, char **ret) {
-        Unit *u = userdata;
+static int specifier_prefix_and_instance(char specifier, const void *data, const void *userdata, char **ret) {
+        const Unit *u = userdata;
 
         assert(u);
 
         return unit_name_to_prefix_and_instance(u->id, ret);
 }
 
-static int specifier_prefix(char specifier, void *data, void *userdata, char **ret) {
-        Unit *u = userdata;
+static int specifier_prefix(char specifier, const void *data, const void *userdata, char **ret) {
+        const Unit *u = userdata;
 
         assert(u);
 
         return unit_name_to_prefix(u->id, ret);
 }
 
-static int specifier_prefix_unescaped(char specifier, void *data, void *userdata, char **ret) {
+static int specifier_prefix_unescaped(char specifier, const void *data, const void *userdata, char **ret) {
         _cleanup_free_ char *p = NULL;
-        Unit *u = userdata;
+        const Unit *u = userdata;
         int r;
 
         assert(u);
@@ -42,16 +42,16 @@ static int specifier_prefix_unescaped(char specifier, void *data, void *userdata
         return unit_name_unescape(p, ret);
 }
 
-static int specifier_instance_unescaped(char specifier, void *data, void *userdata, char **ret) {
-        Unit *u = userdata;
+static int specifier_instance_unescaped(char specifier, const void *data, const void *userdata, char **ret) {
+        const Unit *u = userdata;
 
         assert(u);
 
         return unit_name_unescape(strempty(u->instance), ret);
 }
 
-static int specifier_last_component(char specifier, void *data, void *userdata, char **ret) {
-        Unit *u = userdata;
+static int specifier_last_component(char specifier, const void *data, const void *userdata, char **ret) {
+        const Unit *u = userdata;
         _cleanup_free_ char *prefix = NULL;
         char *dash;
         int r;
@@ -70,7 +70,7 @@ static int specifier_last_component(char specifier, void *data, void *userdata,
         return 0;
 }
 
-static int specifier_last_component_unescaped(char specifier, void *data, void *userdata, char **ret) {
+static int specifier_last_component_unescaped(char specifier, const void *data, const void *userdata, char **ret) {
         _cleanup_free_ char *p = NULL;
         int r;
 
@@ -81,8 +81,8 @@ static int specifier_last_component_unescaped(char specifier, void *data, void *
         return unit_name_unescape(p, ret);
 }
 
-static int specifier_filename(char specifier, void *data, void *userdata, char **ret) {
-        Unit *u = userdata;
+static int specifier_filename(char specifier, const void *data, const void *userdata, char **ret) {
+        const Unit *u = userdata;
 
         assert(u);
 
@@ -92,12 +92,12 @@ static int specifier_filename(char specifier, void *data, void *userdata, char *
                 return unit_name_to_path(u->id, ret);
 }
 
-static void bad_specifier(Unit *u, char specifier) {
+static void bad_specifier(const Unit *u, char specifier) {
         log_unit_warning(u, "Specifier '%%%c' used in unit configuration, which is deprecated. Please update your unit file, as it does not work as intended.", specifier);
 }
 
-static int specifier_cgroup(char specifier, void *data, void *userdata, char **ret) {
-        Unit *u = userdata;
+static int specifier_cgroup(char specifier, const void *data, const void *userdata, char **ret) {
+        const Unit *u = userdata;
         char *n;
 
         assert(u);
@@ -115,8 +115,8 @@ static int specifier_cgroup(char specifier, void *data, void *userdata, char **r
         return 0;
 }
 
-static int specifier_cgroup_root(char specifier, void *data, void *userdata, char **ret) {
-        Unit *u = userdata;
+static int specifier_cgroup_root(char specifier, const void *data, const void *userdata, char **ret) {
+        const Unit *u = userdata;
         char *n;
 
         assert(u);
@@ -131,8 +131,8 @@ static int specifier_cgroup_root(char specifier, void *data, void *userdata, cha
         return 0;
 }
 
-static int specifier_cgroup_slice(char specifier, void *data, void *userdata, char **ret) {
-        Unit *u = userdata;
+static int specifier_cgroup_slice(char specifier, const void *data, const void *userdata, char **ret) {
+        const Unit *u = userdata;
         char *n;
 
         assert(u);
@@ -140,7 +140,7 @@ static int specifier_cgroup_slice(char specifier, void *data, void *userdata, ch
         bad_specifier(u, specifier);
 
         if (UNIT_ISSET(u->slice)) {
-                Unit *slice;
+                const Unit *slice;
 
                 slice = UNIT_DEREF(u->slice);
 
@@ -157,8 +157,8 @@ static int specifier_cgroup_slice(char specifier, void *data, void *userdata, ch
         return 0;
 }
 
-static int specifier_special_directory(char specifier, void *data, void *userdata, char **ret) {
-        Unit *u = userdata;
+static int specifier_special_directory(char specifier, const void *data, const void *userdata, char **ret) {
+        const Unit *u = userdata;
         char *n = NULL;
 
         assert(u);