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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /tools/testing/selftests/bpf/progs/trace_vprintk.c
parentInitial commit. (diff)
downloadlinux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz
linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tools/testing/selftests/bpf/progs/trace_vprintk.c')
-rw-r--r--tools/testing/selftests/bpf/progs/trace_vprintk.c34
1 files changed, 34 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/progs/trace_vprintk.c b/tools/testing/selftests/bpf/progs/trace_vprintk.c
new file mode 100644
index 000000000..969306cd4
--- /dev/null
+++ b/tools/testing/selftests/bpf/progs/trace_vprintk.c
@@ -0,0 +1,34 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) 2021 Facebook */
+
+#include "vmlinux.h"
+#include <bpf/bpf_helpers.h>
+#include <bpf/bpf_tracing.h>
+#include "bpf_misc.h"
+
+char _license[] SEC("license") = "GPL";
+
+int null_data_vprintk_ret = 0;
+int trace_vprintk_ret = 0;
+int trace_vprintk_ran = 0;
+
+SEC("fentry/" SYS_PREFIX "sys_nanosleep")
+int sys_enter(void *ctx)
+{
+ static const char one[] = "1";
+ static const char three[] = "3";
+ static const char five[] = "5";
+ static const char seven[] = "7";
+ static const char nine[] = "9";
+ static const char f[] = "%pS\n";
+
+ /* runner doesn't search for \t, just ensure it compiles */
+ bpf_printk("\t");
+
+ trace_vprintk_ret = __bpf_vprintk("%s,%d,%s,%d,%s,%d,%s,%d,%s,%d %d\n",
+ one, 2, three, 4, five, 6, seven, 8, nine, 10, ++trace_vprintk_ran);
+
+ /* non-NULL fmt w/ NULL data should result in error */
+ null_data_vprintk_ret = bpf_trace_vprintk(f, sizeof(f), NULL, 0);
+ return 0;
+}