tools/perf/trace/beauty/flock.c

   1 // SPDX-License-Identifier: GPL-2.0
   2
   3 #include "trace/beauty/beauty.h"
   4 #include <linux/kernel.h>
   5 #include <uapi/linux/fcntl.h>
   6
   7 #ifndef LOCK_MAND
   8 #define LOCK_MAND        32
   9 #endif
  10
  11 #ifndef LOCK_READ
  12 #define LOCK_READ        64
  13 #endif
  14
  15 #ifndef LOCK_WRITE
  16 #define LOCK_WRITE      128
  17 #endif
  18
  19 #ifndef LOCK_RW
  20 #define LOCK_RW         192
  21 #endif
  22
  23 size_t syscall_arg__scnprintf_flock(char *bf, size_t size, struct syscall_arg *arg)
  24 {
  25         int printed = 0, op = arg->val;
  26
  27         if (op == 0)
  28                 return scnprintf(bf, size, "NONE");
  29 #define P_CMD(cmd) \
  30         if ((op & LOCK_##cmd) == LOCK_##cmd) { \
  31                 printed += scnprintf(bf + printed, size - printed, "%s%s", printed ? "|" : "", #cmd); \
  32                 op &= ~LOCK_##cmd; \
  33         }
  34
  35         P_CMD(SH);
  36         P_CMD(EX);
  37         P_CMD(NB);
  38         P_CMD(UN);
  39         P_CMD(MAND);
  40         P_CMD(RW);
  41         P_CMD(READ);
  42         P_CMD(WRITE);
  43 #undef P_OP
  44
  45         if (op)
  46                 printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", op);
  47
  48         return printed;
  49 }