2 * Check decoding of signalfd4 syscall.
4 * Copyright (c) 2015-2016 Dmitry V. Levin <ldv@altlinux.org>
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
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32 #include <asm/unistd.h>
34 #if defined __NR_rt_sigprocmask \
35 && defined HAVE_SYS_SIGNALFD_H \
36 && defined HAVE_SIGNALFD \
42 # include <sys/signalfd.h>
47 const unsigned int big_size = 1024 / 8;
48 unsigned int set_size;
50 for (set_size = big_size; set_size; set_size >>= 1) {
51 if (!syscall(__NR_rt_sigprocmask, SIG_SETMASK,
52 NULL, NULL, set_size))
57 perror_msg_and_fail("rt_sigprocmask");
65 const char *const sigs = SIGUSR2 < SIGCHLD ? "USR2 CHLD" : "CHLD USR2";
66 const unsigned int size = get_sigset_size();
70 sigaddset(&mask, SIGUSR2);
71 sigaddset(&mask, SIGCHLD);
73 int fd = signalfd(-1, &mask, O_CLOEXEC | O_NONBLOCK);
75 printf("signalfd4(-1, [%s], %u, SFD_CLOEXEC|SFD_NONBLOCK)"
76 " = %d %s (%m)\n", sigs, size, fd, errno2name());
78 printf("signalfd4(-1, [%s], %u, SFD_CLOEXEC|SFD_NONBLOCK)"
79 " = %d\n", sigs, size, fd);
81 puts("+++ exited with 0 +++");
87 SKIP_MAIN_UNDEFINED("__NR_rt_sigprocmask && HAVE_SYS_SIGNALFD_H"
88 " && HAVE_SIGNALFD && O_CLOEXEC")