40 lines · c
1// SPDX-License-Identifier: LGPL-2.12#ifndef EFD_SEMAPHORE3#define EFD_SEMAPHORE 14#endif5 6#ifndef EFD_NONBLOCK7#define EFD_NONBLOCK 000040008#endif9 10#ifndef EFD_CLOEXEC11#define EFD_CLOEXEC 0200000012#endif13 14static size_t syscall_arg__scnprintf_eventfd_flags(char *bf, size_t size, struct syscall_arg *arg)15{16 bool show_prefix = arg->show_string_prefix;17 const char *prefix = "EFD_";18 int printed = 0, flags = arg->val;19 20 if (flags == 0)21 return scnprintf(bf, size, "NONE");22#define P_FLAG(n) \23 if (flags & EFD_##n) { \24 printed += scnprintf(bf + printed, size - printed, "%s%s%s", printed ? "|" : "", show_prefix ? prefix : "", #n); \25 flags &= ~EFD_##n; \26 }27 28 P_FLAG(SEMAPHORE);29 P_FLAG(CLOEXEC);30 P_FLAG(NONBLOCK);31#undef P_FLAG32 33 if (flags)34 printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", flags);35 36 return printed;37}38 39#define SCA_EFD_FLAGS syscall_arg__scnprintf_eventfd_flags40