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cap-list: add CAPABILITY_TO_STRING() macro using compound initialization to allocate fallback buffer

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Let's add a helper that can return a numeric string in case we don't
recognize a name for a capability.
This commit is contained in:
Lennart Poettering
2023-02-20 16:27:26 +01:00
parent d0e67c69ba
commit c52c4d6974
3 changed files with 33 additions and 1 deletions
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src/test/test-cap-list.c
+9
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@@ -14,6 +14,13 @@
TEST(cap_list) {
assert_se(!capability_to_name(-1));
assert_se(!capability_to_name(capability_list_length()));
assert_se(!capability_to_name(63));
assert_se(!capability_to_name(64));
assert_se(!CAPABILITY_TO_STRING(-1));
if (capability_list_length() <= 62)
assert_se(streq(CAPABILITY_TO_STRING(62), "0x3e"));
assert_se(!CAPABILITY_TO_STRING(64));
for (int i = 0; i < capability_list_length(); i++) {
const char *n;
@@ -21,6 +28,8 @@ TEST(cap_list) {
assert_se(n = capability_to_name(i));
assert_se(capability_from_name(n) == i);
printf("%s = %i\n", n, i);
assert_se(streq(CAPABILITY_TO_STRING(i), n));
}
assert_se(capability_from_name("asdfbsd") == -EINVAL);