flock.c

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// SPDX-License-Identifier: GPL-2.0

#include "trace/beauty/beauty.h"
#include <linux/kernel.h>
#include <uapi/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)
{
    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", printed ? "|" : "", #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;
}