This patch adds various "positive" patterns for "%c" and two "negative"
patterns for wide character.
Signed-off-by: Kuniyuki Iwashima <kuniyu@xxxxxxxxxxxx>
---
tools/testing/selftests/bpf/prog_tests/snprintf.c | 4 +++-
tools/testing/selftests/bpf/progs/test_snprintf.c | 6 +++---
2 files changed, 6 insertions(+), 4 deletions(-)
diff --git a/tools/testing/selftests/bpf/prog_tests/snprintf.c b/tools/testing/selftests/bpf/prog_tests/snprintf.c
index dffbcaa1ec98..8fd1b4b29a0e 100644
--- a/tools/testing/selftests/bpf/prog_tests/snprintf.c
+++ b/tools/testing/selftests/bpf/prog_tests/snprintf.c
@@ -19,7 +19,7 @@
#define EXP_ADDR_OUT "0000000000000000 ffff00000add4e55 "
#define EXP_ADDR_RET sizeof(EXP_ADDR_OUT "unknownhashedptr")
-#define EXP_STR_OUT "str1 longstr"
+#define EXP_STR_OUT "str1 a b c d e longstr"
#define EXP_STR_RET sizeof(EXP_STR_OUT)
#define EXP_OVER_OUT "%over"
@@ -114,6 +114,8 @@ void test_snprintf_negative(void)
ASSERT_ERR(load_single_snprintf("%"), "invalid specifier 3");
ASSERT_ERR(load_single_snprintf("%12345678"), "invalid specifier 4");
ASSERT_ERR(load_single_snprintf("%--------"), "invalid specifier 5");
+ ASSERT_ERR(load_single_snprintf("%lc"), "invalid specifier 6");
+ ASSERT_ERR(load_single_snprintf("%llc"), "invalid specifier 7");
ASSERT_ERR(load_single_snprintf("\x80"), "non ascii character");
ASSERT_ERR(load_single_snprintf("\x1"), "non printable character");
}
diff --git a/tools/testing/selftests/bpf/progs/test_snprintf.c b/tools/testing/selftests/bpf/progs/test_snprintf.c
index e2ad26150f9b..8fda07544023 100644
--- a/tools/testing/selftests/bpf/progs/test_snprintf.c
+++ b/tools/testing/selftests/bpf/progs/test_snprintf.c
@@ -59,9 +59,9 @@ int handler(const void *ctx)
/* Kernel pointers */
addr_ret = BPF_SNPRINTF(addr_out, sizeof(addr_out), "%pK %px %p",
0, 0xFFFF00000ADD4E55, 0xFFFF00000ADD4E55);
- /* Strings embedding */
- str_ret = BPF_SNPRINTF(str_out, sizeof(str_out), "%s %+05s",
- str1, longstr);
+ /* Strings and single-byte character embedding */
+ str_ret = BPF_SNPRINTF(str_out, sizeof(str_out), "%s % 9c %+2c %-3c %04c %0c %+05s",
+ str1, 'a', 'b', 'c', 'd', 'e', longstr);
/* Overflow */
over_ret = BPF_SNPRINTF(over_out, sizeof(over_out), "%%overflow");
/* Padding of fixed width numbers */
--
2.30.2
