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-rw-r--r--lib/strcat_kunit.c104
1 files changed, 0 insertions, 104 deletions
diff --git a/lib/strcat_kunit.c b/lib/strcat_kunit.c
deleted file mode 100644
index ca09f7f0e6..0000000000
--- a/lib/strcat_kunit.c
+++ /dev/null
@@ -1,104 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Kernel module for testing 'strcat' family of functions.
- */
-
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#include <kunit/test.h>
-#include <linux/string.h>
-
-static volatile int unconst;
-
-static void test_strcat(struct kunit *test)
-{
- char dest[8];
-
- /* Destination is terminated. */
- memset(dest, 0, sizeof(dest));
- KUNIT_EXPECT_EQ(test, strlen(dest), 0);
- /* Empty copy does nothing. */
- KUNIT_EXPECT_TRUE(test, strcat(dest, "") == dest);
- KUNIT_EXPECT_STREQ(test, dest, "");
- /* 4 characters copied in, stops at %NUL. */
- KUNIT_EXPECT_TRUE(test, strcat(dest, "four\000123") == dest);
- KUNIT_EXPECT_STREQ(test, dest, "four");
- KUNIT_EXPECT_EQ(test, dest[5], '\0');
- /* 2 more characters copied in okay. */
- KUNIT_EXPECT_TRUE(test, strcat(dest, "AB") == dest);
- KUNIT_EXPECT_STREQ(test, dest, "fourAB");
-}
-
-static void test_strncat(struct kunit *test)
-{
- char dest[8];
-
- /* Destination is terminated. */
- memset(dest, 0, sizeof(dest));
- KUNIT_EXPECT_EQ(test, strlen(dest), 0);
- /* Empty copy of size 0 does nothing. */
- KUNIT_EXPECT_TRUE(test, strncat(dest, "", 0 + unconst) == dest);
- KUNIT_EXPECT_STREQ(test, dest, "");
- /* Empty copy of size 1 does nothing too. */
- KUNIT_EXPECT_TRUE(test, strncat(dest, "", 1 + unconst) == dest);
- KUNIT_EXPECT_STREQ(test, dest, "");
- /* Copy of max 0 characters should do nothing. */
- KUNIT_EXPECT_TRUE(test, strncat(dest, "asdf", 0 + unconst) == dest);
- KUNIT_EXPECT_STREQ(test, dest, "");
-
- /* 4 characters copied in, even if max is 8. */
- KUNIT_EXPECT_TRUE(test, strncat(dest, "four\000123", 8 + unconst) == dest);
- KUNIT_EXPECT_STREQ(test, dest, "four");
- KUNIT_EXPECT_EQ(test, dest[5], '\0');
- KUNIT_EXPECT_EQ(test, dest[6], '\0');
- /* 2 characters copied in okay, 2 ignored. */
- KUNIT_EXPECT_TRUE(test, strncat(dest, "ABCD", 2 + unconst) == dest);
- KUNIT_EXPECT_STREQ(test, dest, "fourAB");
-}
-
-static void test_strlcat(struct kunit *test)
-{
- char dest[8] = "";
- int len = sizeof(dest) + unconst;
-
- /* Destination is terminated. */
- KUNIT_EXPECT_EQ(test, strlen(dest), 0);
- /* Empty copy is size 0. */
- KUNIT_EXPECT_EQ(test, strlcat(dest, "", len), 0);
- KUNIT_EXPECT_STREQ(test, dest, "");
- /* Size 1 should keep buffer terminated, report size of source only. */
- KUNIT_EXPECT_EQ(test, strlcat(dest, "four", 1 + unconst), 4);
- KUNIT_EXPECT_STREQ(test, dest, "");
-
- /* 4 characters copied in. */
- KUNIT_EXPECT_EQ(test, strlcat(dest, "four", len), 4);
- KUNIT_EXPECT_STREQ(test, dest, "four");
- /* 2 characters copied in okay, gets to 6 total. */
- KUNIT_EXPECT_EQ(test, strlcat(dest, "AB", len), 6);
- KUNIT_EXPECT_STREQ(test, dest, "fourAB");
- /* 2 characters ignored if max size (7) reached. */
- KUNIT_EXPECT_EQ(test, strlcat(dest, "CD", 7 + unconst), 8);
- KUNIT_EXPECT_STREQ(test, dest, "fourAB");
- /* 1 of 2 characters skipped, now at true max size. */
- KUNIT_EXPECT_EQ(test, strlcat(dest, "EFG", len), 9);
- KUNIT_EXPECT_STREQ(test, dest, "fourABE");
- /* Everything else ignored, now at full size. */
- KUNIT_EXPECT_EQ(test, strlcat(dest, "1234", len), 11);
- KUNIT_EXPECT_STREQ(test, dest, "fourABE");
-}
-
-static struct kunit_case strcat_test_cases[] = {
- KUNIT_CASE(test_strcat),
- KUNIT_CASE(test_strncat),
- KUNIT_CASE(test_strlcat),
- {}
-};
-
-static struct kunit_suite strcat_test_suite = {
- .name = "strcat",
- .test_cases = strcat_test_cases,
-};
-
-kunit_test_suite(strcat_test_suite);
-
-MODULE_LICENSE("GPL");