From: Yu Watanabe <watanabe.yu+github@gmail.com>
Date: Thu, 23 Oct 2025 13:38:35 +0000 (+0900)
Subject: capability-list: make capability_list_length() return unsigned
X-Git-Tag: v259-rc1~255^2~14
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2a6b084cc6ed20e6a9e843b0d598f65a8a2c248a;p=thirdparty%2Fsystemd.git

capability-list: make capability_list_length() return unsigned
---

diff --git a/src/basic/capability-list.c b/src/basic/capability-list.c
index 804dbcb112a..6c60888327c 100644
--- a/src/basic/capability-list.c
+++ b/src/basic/capability-list.c
@@ -20,7 +20,7 @@ static const struct capability_name* lookup_capability(register const char *str,
 const char* capability_to_name(int id) {
         if (id < 0)
                 return NULL;
-        if (id >= capability_list_length())
+        if ((unsigned) id >= capability_list_length())
                 return NULL;
 
         return capability_names[id];
@@ -65,13 +65,13 @@ int capability_from_name(const char *name) {
         return sc->id;
 }
 
-/* This is the number of capability names we are *compiled* with.  For the max capability number of the
+/* This is the number of capability names we are *compiled* with. For the max capability number of the
  * currently-running kernel, use cap_last_cap(). Note that this one returns the size of the array, i.e. one
  * value larger than the last known capability. This is different from cap_last_cap() which returns the
  * highest supported capability. Hence with everyone agreeing on the same capabilities list, this function
  * will return one higher than cap_last_cap(). */
-int capability_list_length(void) {
-        return MIN((int) ELEMENTSOF(capability_names), CAP_LIMIT + 1);
+unsigned capability_list_length(void) {
+        return MIN((unsigned) ELEMENTSOF(capability_names), (unsigned) (CAP_LIMIT + 1));
 }
 
 int capability_set_to_string(uint64_t set, char **ret) {
diff --git a/src/basic/capability-list.h b/src/basic/capability-list.h
index e588e87dee0..2f73c74cdec 100644
--- a/src/basic/capability-list.h
+++ b/src/basic/capability-list.h
@@ -13,7 +13,7 @@ const char* capability_to_string(int id, char buf[static CAPABILITY_TO_STRING_MA
 #define CAPABILITY_TO_STRING(id) capability_to_string(id, (char[CAPABILITY_TO_STRING_MAX]) {})
 
 int capability_from_name(const char *name);
-int capability_list_length(void);
+unsigned capability_list_length(void);
 
 int capability_set_to_string(uint64_t set, char **ret);
 int capability_set_to_string_negative(uint64_t set, char **ret);
diff --git a/src/nspawn/nspawn.c b/src/nspawn/nspawn.c
index a47fcb22949..bc1ed4c9eb5 100644
--- a/src/nspawn/nspawn.c
+++ b/src/nspawn/nspawn.c
@@ -480,7 +480,7 @@ static int parse_capability_spec(const char *spec, uint64_t *ret_mask) {
                         break;
 
                 if (streq(t, "help")) {
-                        for (int i = 0; i < capability_list_length(); i++) {
+                        for (unsigned i = 0; i < capability_list_length(); i++) {
                                 const char *name;
 
                                 name = capability_to_name(i);
diff --git a/src/test/test-capability-list.c b/src/test/test-capability-list.c
index c72c241683a..0f5d53276db 100644
--- a/src/test/test-capability-list.c
+++ b/src/test/test-capability-list.c
@@ -28,12 +28,12 @@ TEST(cap_list) {
                 ASSERT_STREQ(CAPABILITY_TO_STRING(62), "0x3e");
         assert_se(!CAPABILITY_TO_STRING(64));
 
-        for (int i = 0; i < capability_list_length(); i++) {
+        for (unsigned i = 0; i < capability_list_length(); i++) {
                 const char *n;
 
-                assert_se(n = capability_to_name(i));
-                assert_se(capability_from_name(n) == i);
-                printf("%s = %i\n", n, i);
+                ASSERT_NOT_NULL(n = capability_to_name(i));
+                ASSERT_OK_EQ(capability_from_name(n), (int) i);
+                printf("%s = %u\n", n, i);
 
                 ASSERT_STREQ(CAPABILITY_TO_STRING(i), n);
         }
@@ -49,7 +49,7 @@ TEST(cap_list) {
         assert_se(capability_from_name("64") == -EINVAL);
         assert_se(capability_from_name("-1") == -EINVAL);
 
-        for (int i = 0; i < capability_list_length(); i++) {
+        for (unsigned i = 0; i < capability_list_length(); i++) {
                 _cleanup_(cap_free_charpp) char *a = NULL;
                 const char *b;
                 unsigned u;