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test/sandbox/ptrace: generic filter block type
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Signed-off-by: Ophestra <cat@gensokyo.uk>
This commit is contained in:
Ophestra 2025-03-28 01:47:24 +09:00
parent 660a2898dc
commit 389402f955
Signed by: cat
SSH Key Fingerprint: SHA256:gQ67O0enBZ7UdZypgtspB2FDM1g3GVw8nX0XSdcFw8Q
1 changed files with 7 additions and 3 deletions
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10
test/sandbox/ptrace.go
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@ -101,12 +101,16 @@ type sockFilter struct { /* Filter block */
k uint32 /* Generic multiuse field */ k uint32 /* Generic multiuse field */
} }
func getFilter(pid, index int) ([]sockFilter, error) { func getFilter[T comparable](pid, index int) ([]T, error) {
var buf []sockFilter if s := unsafe.Sizeof(*new(T)); s != 8 {
panic(fmt.Sprintf("invalid filter block size %d", s))
}
var buf []T
if n, errno := ptrace(PTRACE_SECCOMP_GET_FILTER, pid, index, nil); errno != 0 { if n, errno := ptrace(PTRACE_SECCOMP_GET_FILTER, pid, index, nil); errno != 0 {
return nil, &ptraceError{"PTRACE_SECCOMP_GET_FILTER", errno} return nil, &ptraceError{"PTRACE_SECCOMP_GET_FILTER", errno}
} else { } else {
buf = make([]sockFilter, n) buf = make([]T, n)
} }
if _, errno := ptrace(PTRACE_SECCOMP_GET_FILTER, pid, index, unsafe.Pointer(&buf[0])); errno != 0 { if _, errno := ptrace(PTRACE_SECCOMP_GET_FILTER, pid, index, unsafe.Pointer(&buf[0])); errno != 0 {
return nil, &ptraceError{"PTRACE_SECCOMP_GET_FILTER", errno} return nil, &ptraceError{"PTRACE_SECCOMP_GET_FILTER", errno}