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author | Zack Weinberg <zackw@panix.com> | 2016-12-01 19:24:13 -0500 |
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committer | Zack Weinberg <zackw@panix.com> | 2017-05-20 19:04:43 -0400 |
commit | a992f506ff7162da2afa5a6151cc6f15949ceef4 (patch) | |
tree | 93ed5242c166dde96fd0ec244801d9f5fdaca86a /sysdeps/unix/sysv/linux/bits/types/siginfo_t.h | |
parent | 500b3a499fff61157db464a99f459c772d7eb6c0 (diff) | |
download | glibc-a992f506ff7162da2afa5a6151cc6f15949ceef4.tar.gz glibc-a992f506ff7162da2afa5a6151cc6f15949ceef4.tar.xz glibc-a992f506ff7162da2afa5a6151cc6f15949ceef4.zip |
Remove __need macros from signal.h.
The types affected are __sig_atomic_t, sig_atomic_t, __sigset_t, sigset_t, sigval_t, sigevent_t, and siginfo_t. __sig_atomic_t is a scalar, so it's now directly available from bits/types.h. The others get bits/types/ headers. Side effects include: There have been small changes to which non-signal headers expose which subset of the signal-related types. A couple of architectures' nested siginfo_t fields had to be renamed to prevent undesired macro expansion. Internal code that wants to manipulate signal masks must now include <sigsetops.h> (which is not installed) and should be aware that __sigaddset, __sigandset, __sigdelset, __sigemptyset, and __sigorset no longer return a value (unlike the public API). Relatedly, the public signal.h no longer declares any of those functions. The obsolete sigmask() macro no longer has a system-specific definition -- in the cases where it matters, it didn't work anyway. New Linux architectures should create bits/siginfo-arch.h and/or bits/siginfo-consts-arch.h to customize their siginfo_t, rather than duplicating everything in bits/siginfo.h (which no longer exists). Add new __SI_* macros if necessary. Ports to other operating systems are strongly encouraged to generalize this scheme further. * bits/sigevent-consts.h * bits/siginfo-consts.h * bits/types/__sigset_t.h * bits/types/sigevent_t.h * bits/types/siginfo_t.h * sysdeps/unix/sysv/linux/bits/sigevent-consts.h * sysdeps/unix/sysv/linux/bits/siginfo-consts.h * sysdeps/unix/sysv/linux/bits/types/__sigset_t.h * sysdeps/unix/sysv/linux/bits/types/sigevent_t.h * sysdeps/unix/sysv/linux/bits/types/siginfo_t.h: New system-dependent bits headers. * sysdeps/unix/sysv/linux/bits/siginfo-arch.h * sysdeps/unix/sysv/linux/bits/siginfo-consts-arch.h * sysdeps/unix/sysv/linux/ia64/bits/siginfo-arch.h * sysdeps/unix/sysv/linux/ia64/bits/siginfo-consts-arch.h * sysdeps/unix/sysv/linux/mips/bits/siginfo-arch.h * sysdeps/unix/sysv/linux/sparc/bits/siginfo-arch.h * sysdeps/unix/sysv/linux/tile/bits/siginfo-arch.h * sysdeps/unix/sysv/linux/tile/bits/siginfo-consts-arch.h * sysdeps/unix/sysv/linux/x86/bits/siginfo-arch.h: New Linux-only system-dependent bits headers. * signal/bits/types/sig_atomic_t.h * signal/bits/types/sigset_t.h * signal/bits/types/sigval_t.h: New non-system-dependent bits headers. * sysdeps/generic/sigsetops.h * sysdeps/unix/sysv/linux/sigsetops.h: New internal headers. * include/bits/types/sig_atomic_t.h * include/bits/types/sigset_t.h * include/bits/types/sigval_t.h: New wrappers. * signal/sigsetops.h * bits/siginfo.h * bits/sigset.h * sysdeps/unix/sysv/linux/bits/siginfo.h * sysdeps/unix/sysv/linux/bits/sigset.h * sysdeps/unix/sysv/linux/ia64/bits/siginfo.h * sysdeps/unix/sysv/linux/mips/bits/siginfo.h * sysdeps/unix/sysv/linux/s390/bits/siginfo.h * sysdeps/unix/sysv/linux/sparc/bits/siginfo.h * sysdeps/unix/sysv/linux/tile/bits/siginfo.h * sysdeps/unix/sysv/linux/x86/bits/siginfo.h: Deleted. * signal/Makefile, sysdeps/unix/sysv/linux/Makefile: Update lists of installed headers. * posix/bits/types.h: Define __sig_atomic_t here. * signal/signal.h: Use the new bits headers; no need to handle __need_sig_atomic_t nor __need_sigset_t. Don't use __sigmask to define sigmask. * include/signal.h: No need to handle __need_sig_atomic_t nor __need_sigset_t. Don't define __sigemptyset. * io/sys/poll.h, setjmp/setjmp.h * sysdeps/arm/sys/ucontext.h, sysdeps/generic/sys/ucontext.h * sysdeps/i386/sys/ucontext.h, sysdeps/m68k/sys/ucontext.h * sysdeps/mach/hurd/i386/bits/sigcontext.h * sysdeps/mips/sys/ucontext.h, sysdeps/powerpc/novmxsetjmp.h * sysdeps/pthread/bits/sigthread.h * sysdeps/unix/sysv/linux/hppa/sys/ucontext.h * sysdeps/unix/sysv/linux/m68k/sys/ucontext.h * sysdeps/unix/sysv/linux/mips/sys/ucontext.h * sysdeps/unix/sysv/linux/nios2/sys/ucontext.h * sysdeps/unix/sysv/linux/powerpc/sys/ucontext.h * sysdeps/unix/sysv/linux/s390/sys/ucontext.h * sysdeps/unix/sysv/linux/sh/sys/ucontext.h * sysdeps/unix/sysv/linux/sparc/sys/ucontext.h * sysdeps/unix/sysv/linux/tile/sys/ucontext.h * sysdeps/unix/sysv/linux/x86/sys/ucontext.h: Use bits/types/__sigset_t.h. * misc/sys/select.h, posix/spawn.h * sysdeps/unix/sysv/linux/powerpc/sys/ucontext.h * sysdeps/unix/sysv/linux/sys/epoll.h * sysdeps/unix/sysv/linux/sys/signalfd.h: Use bits/types/sigset_t.h. * resolv/netdb.h, rt/mqueue.h: Use bits/types/sigevent_t.h. * rt/aio.h: Use bits/types/sigevent_t.h and bits/sigevent-consts.h. * socket/sys/socket.h: Don't include bits/sigset.h. * login/utmp_file.c, shadow/lckpwdf.c, signal/sigandset.c * signal/sigisempty.c, stdlib/abort.c, sysdeps/posix/profil.c * sysdeps/posix/sigignore.c, sysdeps/posix/sigintr.c * sysdeps/posix/signal.c, sysdeps/posix/sigset.c * sysdeps/posix/sprofil.c, sysdeps/posix/sysv_signal.c * sysdeps/unix/sysv/linux/nptl-signals.h: Include sigsetops.h. * signal/sigaddset.c, signal/sigandset.c, signal/sigdelset.c * signal/sigorset.c, stdlib/abort.c, sysdeps/posix/sigignore.c * sysdeps/posix/signal.c, sysdeps/posix/sigset.c: __sigaddset, __sigandset, __sigdelset, __sigemptyset, __sigorset now return no value. * signal/sigaddset.c, signal/sigdelset.c, signal/sigismem.c Include <errno.h>, <signal.h>, and <sigsetops.h> instead of "sigsetops.h". * signal/sigsetops.c: Explicitly define __sigismember, __sigaddset, and __sigdelset as compatibility symbols. * signal/Versions: Correct commentary on __sigpause, __sigaddset, __sigdelset, __sigismember. * inet/rcmd.c: Include sigsetops.h. Convert old code using __sigblock/__sigsetmask to use __sigprocmask and friends.
Diffstat (limited to 'sysdeps/unix/sysv/linux/bits/types/siginfo_t.h')
-rw-r--r-- | sysdeps/unix/sysv/linux/bits/types/siginfo_t.h | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/bits/types/siginfo_t.h b/sysdeps/unix/sysv/linux/bits/types/siginfo_t.h new file mode 100644 index 0000000000..1bb6da5264 --- /dev/null +++ b/sysdeps/unix/sysv/linux/bits/types/siginfo_t.h @@ -0,0 +1,139 @@ +#ifndef __siginfo_t_defined +#define __siginfo_t_defined 1 + +#include <bits/wordsize.h> +#include <bits/types.h> +#include <bits/types/sigval_t.h> + +#define __SI_MAX_SIZE 128 +#if __WORDSIZE == 64 +# define __SI_PAD_SIZE ((__SI_MAX_SIZE / sizeof (int)) - 4) +#else +# define __SI_PAD_SIZE ((__SI_MAX_SIZE / sizeof (int)) - 3) +#endif + +/* Some fields of siginfo_t have architecture-specific variations. */ +#define __SI_ALIGNMENT /* nothing */ +#define __SI_BAND_TYPE long int +#define __SI_CLOCK_T __clock_t +#define __SI_ERRNO_THEN_CODE 1 +#define __SI_HAVE_SIGSYS 1 +#define __SI_SIGFAULT_ADDL /* nothing */ +#include <bits/siginfo-arch.h> + +typedef struct + { + int si_signo; /* Signal number. */ +#if __SI_ERRNO_THEN_CODE + int si_errno; /* If non-zero, an errno value associated with + this signal, as defined in <errno.h>. */ + int si_code; /* Signal code. */ +#else + int si_code; + int si_errno; +#endif +#if __WORDSIZE == 64 + int __pad0; /* Explicit padding. */ +#endif + + union + { + int _pad[__SI_PAD_SIZE]; + + /* kill(). */ + struct + { + __pid_t si_pid; /* Sending process ID. */ + __uid_t si_uid; /* Real user ID of sending process. */ + } _kill; + + /* POSIX.1b timers. */ + struct + { + int si_tid; /* Timer ID. */ + int si_overrun; /* Overrun count. */ + sigval_t si_sigval; /* Signal value. */ + } _timer; + + /* POSIX.1b signals. */ + struct + { + __pid_t si_pid; /* Sending process ID. */ + __uid_t si_uid; /* Real user ID of sending process. */ + sigval_t si_sigval; /* Signal value. */ + } _rt; + + /* SIGCHLD. */ + struct + { + __pid_t si_pid; /* Which child. */ + __uid_t si_uid; /* Real user ID of sending process. */ + int si_status; /* Exit value or signal. */ + __SI_CLOCK_T si_utime; + __SI_CLOCK_T si_stime; + } _sigchld; + + /* SIGILL, SIGFPE, SIGSEGV, SIGBUS. */ + struct + { + void *si_addr; /* Faulting insn/memory ref. */ + __SI_SIGFAULT_ADDL + short int si_addr_lsb; /* Valid LSB of the reported address. */ + union + { + /* used when si_code=SEGV_BNDERR */ + struct + { + void *_lower; + void *_upper; + } _addr_bnd; + /* used when si_code=SEGV_PKUERR */ + __uint32_t _pkey; + } _bounds; + } _sigfault; + + /* SIGPOLL. */ + struct + { + long int si_band; /* Band event for SIGPOLL. */ + int si_fd; + } _sigpoll; + + /* SIGSYS. */ +#if __SI_HAVE_SIGSYS + struct + { + void *_call_addr; /* Calling user insn. */ + int _syscall; /* Triggering system call number. */ + unsigned int _arch; /* AUDIT_ARCH_* of syscall. */ + } _sigsys; +#endif + } _sifields; + } siginfo_t __SI_ALIGNMENT; + + +/* X/Open requires some more fields with fixed names. */ +#define si_pid _sifields._kill.si_pid +#define si_uid _sifields._kill.si_uid +#define si_timerid _sifields._timer.si_tid +#define si_overrun _sifields._timer.si_overrun +#define si_status _sifields._sigchld.si_status +#define si_utime _sifields._sigchld.si_utime +#define si_stime _sifields._sigchld.si_stime +#define si_value _sifields._rt.si_sigval +#define si_int _sifields._rt.si_sigval.sival_int +#define si_ptr _sifields._rt.si_sigval.sival_ptr +#define si_addr _sifields._sigfault.si_addr +#define si_addr_lsb _sifields._sigfault.si_addr_lsb +#define si_lower _sifields._sigfault._bounds._addr_bnd._lower +#define si_upper _sifields._sigfault._bounds._addr_bnd._upper +#define si_pkey _sifields._sigfault._bounds._pkey +#define si_band _sifields._sigpoll.si_band +#define si_fd _sifields._sigpoll.si_fd +#if __SI_HAVE_SIGSYS +# define si_call_addr _sifields._sigsys._call_addr +# define si_syscall _sifields._sigsys._syscall +# define si_arch _sifields._sigsys._arch +#endif + +#endif |