kvm_string
s = kvm_string(va_arg(va, char *), &strctx);
static const char *kvm_string(const char *, struct save_ctx *);
fprintf(fo, "%-20s ", kvm_string(info->kf_name, &nctx));
trunc_path(kvm_string(entry->ktr_file, &pctx), 34),
fmt = kvm_string(info->kf_format, &fmtctx);
kvmfprintf(fo, kvm_string(info->kf_format, &fmtctx),
char *t = strdup(kvm_string(((char **)fmtdata)[0],
ev.file = kvm_string(entry->ktr_file, &pctx);
ev.fmt = kvm_string(ki->kf_format, &fmtctx);