root/tools/perf/trace/beauty/flock.c
// SPDX-License-Identifier: LGPL-2.1

#include "trace/beauty/beauty.h"
#include <linux/kernel.h>
#include <linux/fcntl.h>

#ifndef LOCK_MAND
#define LOCK_MAND        32
#endif

#ifndef LOCK_READ
#define LOCK_READ        64
#endif

#ifndef LOCK_WRITE
#define LOCK_WRITE      128
#endif

#ifndef LOCK_RW
#define LOCK_RW         192
#endif

size_t syscall_arg__scnprintf_flock(char *bf, size_t size, struct syscall_arg *arg)
{
        bool show_prefix = arg->show_string_prefix;
        const char *prefix = "LOCK_";
        int printed = 0, op = arg->val;

        if (op == 0)
                return scnprintf(bf, size, "NONE");
#define P_CMD(cmd) \
        if ((op & LOCK_##cmd) == LOCK_##cmd) { \
                printed += scnprintf(bf + printed, size - printed, "%s%s%s", printed ? "|" : "", show_prefix ? prefix : "", #cmd); \
                op &= ~LOCK_##cmd; \
        }

        P_CMD(SH);
        P_CMD(EX);
        P_CMD(NB);
        P_CMD(UN);
        P_CMD(MAND);
        P_CMD(RW);
        P_CMD(READ);
        P_CMD(WRITE);
#undef P_OP

        if (op)
                printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", op);

        return printed;
}