mirror of
https://git.musl-libc.org/git/musl
synced 2025-02-13 08:44:08 +03:00
44d28e5512
the main motivation for this change is that, with the previous definition, it was arguably illegal, in standard C, to initialize both si_value and si_pid/si_uid with designated initializers, due to the rule that only one member of a union can have an initializer. whether or not this affected real-world application code, it affected some internal code, and clang was producing warnings (and possibly generating incorrect code). the new definition uses a more complex hierarchy of structs and unions to avoid the need to initialize more than one member of a single union in usage cases that make sense. further work would be needed to eliminate even the ones with no practical applications. at the same time, some fixes are made to the exposed names for nonstandard fields, to match what software using them expects.
254 lines
5.9 KiB
C
254 lines
5.9 KiB
C
#ifndef _SIGNAL_H
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#define _SIGNAL_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <features.h>
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#if defined(_POSIX_SOURCE) || defined(_POSIX_C_SOURCE) \
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|| defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) \
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|| defined(_BSD_SOURCE)
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#ifdef _GNU_SOURCE
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#define __ucontext ucontext
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#endif
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#define __NEED_size_t
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#define __NEED_pid_t
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#define __NEED_uid_t
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#define __NEED_struct_timespec
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#define __NEED_pthread_t
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#define __NEED_pthread_attr_t
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#define __NEED_time_t
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#define __NEED_clock_t
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#define __NEED_sigset_t
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#include <bits/alltypes.h>
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#define SIG_HOLD ((void (*)(int)) 2)
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#define SIG_BLOCK 0
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#define SIG_UNBLOCK 1
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#define SIG_SETMASK 2
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#define SI_ASYNCNL (-60)
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#define SI_TKILL (-6)
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#define SI_SIGIO (-5)
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#define SI_ASYNCIO (-4)
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#define SI_MESGQ (-3)
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#define SI_TIMER (-2)
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#define SI_QUEUE (-1)
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#define SI_USER 0
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#define SI_KERNEL 128
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#define FPE_INTDIV 1
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#define FPE_INTOVF 2
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#define FPE_FLTDIV 3
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#define FPE_FLTOVF 4
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#define FPE_FLTUND 5
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#define FPE_FLTRES 6
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#define FPE_FLTINV 7
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#define FPE_FLTSUB 8
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#define ILL_ILLOPC 1
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#define ILL_ILLOPN 2
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#define ILL_ILLADR 3
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#define ILL_ILLTRP 4
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#define ILL_PRVOPC 5
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#define ILL_PRVREG 6
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#define ILL_COPROC 7
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#define ILL_BADSTK 8
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#define SEGV_MAPERR 1
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#define SEGV_ACCERR 2
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#define BUS_ADRALN 1
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#define BUS_ADRERR 2
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#define BUS_OBJERR 3
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#define BUS_MCEERR_AR 4
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#define BUS_MCEERR_AO 5
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#define CLD_EXITED 1
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#define CLD_KILLED 2
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#define CLD_DUMPED 3
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#define CLD_TRAPPED 4
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#define CLD_STOPPED 5
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#define CLD_CONTINUED 6
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typedef struct sigaltstack stack_t;
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union sigval {
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int sival_int;
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void *sival_ptr;
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};
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typedef struct {
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int si_signo, si_errno, si_code;
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union {
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char __pad[128 - 2*sizeof(int) - sizeof(long)];
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struct {
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union {
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struct {
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pid_t si_pid;
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uid_t si_uid;
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} __piduid;
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struct {
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int si_timerid;
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int si_overrun;
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} __timer;
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} __first;
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union {
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union sigval si_value;
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struct {
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int si_status;
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clock_t si_utime, si_stime;
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} __sigchld;
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} __second;
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} __si_common;
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struct {
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void *si_addr;
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short si_addr_lsb;
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} __sigfault;
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struct {
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long si_band;
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int si_fd;
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} __sigpoll;
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struct {
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void *si_call_addr;
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int si_syscall;
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unsigned si_arch;
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} __sigsys;
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} __si_fields;
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} siginfo_t;
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#define si_pid __si_fields.__si_common.__first.__piduid.si_pid
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#define si_uid __si_fields.__si_common.__first.__piduid.si_uid
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#define si_status __si_fields.__si_common.__second.__sigchld.si_status
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#define si_utime __si_fields.__si_common.__second.__sigchld.si_utime
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#define si_stime __si_fields.__si_common.__second.__sigchld.si_stime
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#define si_value __si_fields.__si_common.__second.si_value
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#define si_addr __si_fields.__sigfault.si_addr
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#define si_addr_lsb __si_fields.__sigfault.si_addr_lsb
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#define si_band __si_fields.__sigpoll.si_band
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#define si_fd __si_fields.__sigpoll.si_fd
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#define si_timerid __si_fields.__si_common.__first.__timer.si_timerid
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#define si_overrun __si_fields.__si_common.__first.__timer.si_overrun
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#define si_ptr si_value.sival_ptr
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#define si_int si_value.sival_int
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#define si_call_addr __si_fields.__sigsys.si_call_addr
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#define si_syscall __si_fields.__sigsys.si_syscall
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#define si_arch __si_fields.__sigsys.si_arch
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struct sigaction {
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union {
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void (*sa_handler)(int);
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void (*sa_sigaction)(int, siginfo_t *, void *);
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} __sa_handler;
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sigset_t sa_mask;
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int sa_flags;
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void (*sa_restorer)(void);
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};
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#define sa_handler __sa_handler.sa_handler
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#define sa_sigaction __sa_handler.sa_sigaction
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struct sigevent {
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union sigval sigev_value;
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int sigev_signo;
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int sigev_notify;
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void (*sigev_notify_function)(union sigval);
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pthread_attr_t *sigev_notify_attributes;
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char __pad[56-3*sizeof(long)];
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};
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#define SIGEV_SIGNAL 0
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#define SIGEV_NONE 1
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#define SIGEV_THREAD 2
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int __libc_current_sigrtmin(void);
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int __libc_current_sigrtmax(void);
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#define SIGRTMIN (__libc_current_sigrtmin())
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#define SIGRTMAX (__libc_current_sigrtmax())
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int kill(pid_t, int);
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int sigemptyset(sigset_t *);
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int sigfillset(sigset_t *);
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int sigaddset(sigset_t *, int);
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int sigdelset(sigset_t *, int);
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int sigismember(const sigset_t *, int);
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int sigprocmask(int, const sigset_t *__restrict, sigset_t *__restrict);
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int sigsuspend(const sigset_t *);
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int sigaction(int, const struct sigaction *__restrict, struct sigaction *__restrict);
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int sigpending(sigset_t *);
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int sigwait(const sigset_t *__restrict, int *__restrict);
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int sigwaitinfo(const sigset_t *__restrict, siginfo_t *__restrict);
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int sigtimedwait(const sigset_t *__restrict, siginfo_t *__restrict, const struct timespec *__restrict);
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int sigqueue(pid_t, int, const union sigval);
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int pthread_sigmask(int, const sigset_t *__restrict, sigset_t *__restrict);
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int pthread_kill(pthread_t, int);
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void psiginfo(const siginfo_t *, const char *);
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void psignal(int, const char *);
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#endif
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#if defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE)
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int killpg(pid_t, int);
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int sigaltstack(const stack_t *__restrict, stack_t *__restrict);
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int sighold(int);
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int sigignore(int);
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int siginterrupt(int, int);
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int sigpause(int);
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int sigrelse(int);
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void (*sigset(int, void (*)(int)))(int);
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#define TRAP_BRKPT 1
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#define TRAP_TRACE 2
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#define POLL_IN 1
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#define POLL_OUT 2
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#define POLL_MSG 3
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#define POLL_ERR 4
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#define POLL_PRI 5
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#define POLL_HUP 6
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#define SS_ONSTACK 1
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#define SS_DISABLE 2
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#define MINSIGSTKSZ 2048
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#define SIGSTKSZ 8192
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#endif
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#if defined(_BSD_SOURCE) || defined(_GNU_SOURCE)
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#define NSIG _NSIG
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typedef void (*sig_t)(int);
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#endif
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#ifdef _GNU_SOURCE
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typedef void (*sighandler_t)(int);
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void (*bsd_signal(int, void (*)(int)))(int);
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int sigisemptyset(const sigset_t *);
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int sigorset (sigset_t *, const sigset_t *, const sigset_t *);
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int sigandset(sigset_t *, const sigset_t *, const sigset_t *);
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#define SA_NOMASK SA_NODEFER
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#define SA_ONESHOT SA_RESETHAND
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#endif
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#include <bits/signal.h>
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#define SIG_ERR ((void (*)(int))-1)
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#define SIG_DFL ((void (*)(int)) 0)
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#define SIG_IGN ((void (*)(int)) 1)
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typedef int sig_atomic_t;
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void (*signal(int, void (*)(int)))(int);
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int raise(int);
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#ifdef __cplusplus
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}
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#endif
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#endif
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