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| author | Paul Chaignon <paul.chaignon@gmail.com> | 2023-10-13 10:31:49 +0200 |
|---|---|---|
| committer | Aleksandr Nogikh <nogikh@google.com> | 2023-10-16 15:57:22 +0000 |
| commit | 342b9c5594e85819665af37b55afe27d0731379f (patch) | |
| tree | 31d3fa371db2d6232128761e51b95c79ff6cf6aa /sys/linux | |
| parent | 8ad4a8143de26cbdb7d7b9e4e4477eab73a146ff (diff) | |
sys/linux/test: test case for bpf_snprintf helper
This commit adds a new test case for the bpf_snprintf description
introduced in the previous commit. It corresponds to the BPF code:
char str[8] = {0};
u64 data = 0x1234;
bpf_snprintf(str, sizeof(str), "%d ", &data, sizeof(data));
exit 0;
The fmt (3rd) argument must be stored in a read-only array map which is
prepared with the first three syscalls. Once loaded, the program is
executed with BPF_PROG_TEST_RUN.
Signed-off-by: Paul Chaignon <paul.chaignon@gmail.com>
Diffstat (limited to 'sys/linux')
| -rw-r--r-- | sys/linux/test/bpf_helpers | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/sys/linux/test/bpf_helpers b/sys/linux/test/bpf_helpers index 9e65ffc55..2e9287eda 100644 --- a/sys/linux/test/bpf_helpers +++ b/sys/linux/test/bpf_helpers @@ -3,3 +3,13 @@ r1 = bpf$PROG_LOAD(AUTO, &AUTO={0x3, AUTO, &AUTO=@framed={{AUTO, AUTO, AUTO, AUTO, 0x0, AUTO, AUTO, AUTO, 0x0}, [@printk={@integer={AUTO, AUTO, AUTO, AUTO, AUTO, AUTO, AUTO, AUTO, AUTO}, {AUTO, AUTO, AUTO, AUTO, AUTO, AUTO, AUTO}, {AUTO, AUTO, AUTO, AUTO, AUTO, AUTO, AUTO}, {AUTO, AUTO, AUTO, AUTO, AUTO, AUTO, AUTO}, {AUTO, AUTO, AUTO, AUTO, AUTO, AUTO, AUTO}, {AUTO, AUTO, AUTO, AUTO, AUTO, AUTO, 0x1234}, {AUTO, AUTO, AUTO, AUTO}}], {AUTO, AUTO, AUTO, AUTO}}, &AUTO='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, "00000000000000000000000000000000", 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, 0xa0) r2 = bpf$BPF_PROG_TEST_RUN(AUTO, &AUTO={r1, AUTO, 0x10, 0x10, &AUTO="0000000000000000", &AUTO="0000000000000000", 0x1, AUTO, 0x0, 0x0, 0x0, 0x0, 0x0, AUTO, 0x0}, 0x4c) + +# Prepare, load, and execute a BPF program that calls bpf_snprintf + +r1 = bpf$MAP_CREATE_CONST_STR(AUTO, &AUTO={AUTO, AUTO, AUTO, AUTO, AUTO, 0x0, 0x0, "00000000000000000000000000000000", 0x0, 0x0, 0x0, 0x0, 0x0, AUTO}, 0x48) +r2 = bpf$MAP_UPDATE_CONST_STR(AUTO, &AUTO={{r1, r1}, &AUTO=0x0, &AUTO='%d \x00', AUTO}, 0x1c) +r3 = bpf$BPF_MAP_CONST_STR_FREEZE(AUTO, &AUTO={r1, r1}, 0x4) + +r4 = bpf$PROG_LOAD(AUTO, &AUTO={0x3, AUTO, &AUTO=@framed={{AUTO, AUTO, AUTO, AUTO, 0x0, AUTO, AUTO, AUTO, 0x0}, [@snprintf={{AUTO, AUTO, AUTO, AUTO, AUTO, AUTO, AUTO}, {AUTO, AUTO, AUTO, AUTO, AUTO, AUTO, AUTO}, {AUTO, AUTO, AUTO, AUTO, AUTO, AUTO, 0x1234}, {AUTO, AUTO, AUTO, AUTO, AUTO, AUTO, AUTO}, {AUTO, AUTO, AUTO, AUTO, AUTO, AUTO, AUTO}, {AUTO, AUTO, AUTO, AUTO, AUTO, AUTO, AUTO}, {AUTO, AUTO, AUTO, AUTO, AUTO, AUTO, AUTO}, {AUTO, AUTO, AUTO, AUTO, AUTO, AUTO, AUTO}, {AUTO, AUTO, AUTO, AUTO, AUTO, AUTO, AUTO}, {AUTO, AUTO, AUTO, AUTO, r1, AUTO, AUTO, AUTO, AUTO}, {AUTO, AUTO, AUTO, AUTO, AUTO, AUTO, AUTO}, {AUTO, AUTO, AUTO, AUTO}}], {AUTO, AUTO, AUTO, AUTO}}, &AUTO='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, "00000000000000000000000000000000", 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, 0xa0) + +r5 = bpf$BPF_PROG_TEST_RUN(AUTO, &AUTO={r4, AUTO, 0x10, 0x10, &AUTO="0000000000000000", &AUTO="0000000000000000", 0x1, AUTO, 0x0, 0x0, 0x0, 0x0, 0x0, AUTO, 0x0}, 0x4c) |