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systemd.20455
6000-unit-name-generate-a-clear-error-code-when...
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File 6000-unit-name-generate-a-clear-error-code-when-convertin.patch of Package systemd.20455
From 1ffd3c58d63f1d20409666260e76c5432330c243 Mon Sep 17 00:00:00 2001 From: Lennart Poettering <lennart@poettering.net> Date: Tue, 1 Jun 2021 19:43:55 +0200 Subject: [PATCH 6000/6002] unit-name: generate a clear error code when converting an overly long fs path to a unit name (cherry picked from commit 9d5acfab20c5f1177d877d0bec18063c0a6c5929) [fbui: adjust context] --- src/basic/unit-name.c | 6 ++++++ src/test/test-unit-name.c | 4 ++-- 2 files changed, 8 insertions(+), 2 deletions(-) diff --git a/src/basic/unit-name.c b/src/basic/unit-name.c index 43d8b3477e..4a0d743300 100644 --- a/src/basic/unit-name.c +++ b/src/basic/unit-name.c @@ -528,6 +528,9 @@ int unit_name_from_path(const char *path, const char *suffix, char **ret) { if (!s) return -ENOMEM; + if (strlen(s) >= UNIT_NAME_MAX) /* Return a slightly more descriptive error for this specific condition */ + return -ENAMETOOLONG; + /* Refuse this if this got too long or for some other reason didn't result in a valid name */ if (!unit_name_is_valid(s, UNIT_NAME_PLAIN)) return -EINVAL; @@ -559,6 +562,9 @@ int unit_name_from_path_instance(const char *prefix, const char *path, const cha if (!s) return -ENOMEM; + if (strlen(s) >= UNIT_NAME_MAX) /* Return a slightly more descriptive error for this specific condition */ + return -ENAMETOOLONG; + /* Refuse this if this got too long or for some other reason didn't result in a valid name */ if (!unit_name_is_valid(s, UNIT_NAME_INSTANCE)) return -EINVAL; diff --git a/src/test/test-unit-name.c b/src/test/test-unit-name.c index 0d524f9a56..92e46934dc 100644 --- a/src/test/test-unit-name.c +++ b/src/test/test-unit-name.c @@ -130,7 +130,7 @@ static void test_unit_name_from_path(void) { test_unit_name_from_path_one("///", ".mount", "-.mount", 0); test_unit_name_from_path_one("/foo/../bar", ".mount", NULL, -EINVAL); test_unit_name_from_path_one("/foo/./bar", ".mount", NULL, -EINVAL); - test_unit_name_from_path_one("/waldoaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", ".mount", NULL, -EINVAL); + test_unit_name_from_path_one("/waldoaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", ".mount", NULL, -ENAMETOOLONG); } static void test_unit_name_from_path_instance_one(const char *pattern, const char *path, const char *suffix, const char *expected, int ret) { @@ -160,7 +160,7 @@ static void test_unit_name_from_path_instance(void) { test_unit_name_from_path_instance_one("waldo", "..", ".mount", NULL, -EINVAL); test_unit_name_from_path_instance_one("waldo", "/foo", ".waldi", NULL, -EINVAL); test_unit_name_from_path_instance_one("wa--ldo", "/--", ".mount", "wa--ldo@\\x2d\\x2d.mount", 0); - test_unit_name_from_path_instance_one("waldoaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", "/waldo", ".mount", NULL, -EINVAL); + test_unit_name_from_path_instance_one("waldoaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", "/waldo", ".mount", NULL, -ENAMETOOLONG); } static void test_unit_name_to_path_one(const char *unit, const char *path, int ret) { -- 2.26.2
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