77 lines
1.6 KiB
C
77 lines
1.6 KiB
C
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/*
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* include/linux/signalfd.h
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*
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* Copyright (C) 2007 Davide Libenzi <davidel@xmailserver.org>
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*
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*/
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#ifndef _LINUX_SIGNALFD_H
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#define _LINUX_SIGNALFD_H
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#include <linux/types.h>
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/* For O_CLOEXEC and O_NONBLOCK */
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#include <linux/fcntl.h>
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/* Flags for signalfd4. */
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#define SFD_CLOEXEC O_CLOEXEC
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#define SFD_NONBLOCK O_NONBLOCK
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struct signalfd_siginfo {
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__u32 ssi_signo;
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__s32 ssi_errno;
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__s32 ssi_code;
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__u32 ssi_pid;
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__u32 ssi_uid;
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__s32 ssi_fd;
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__u32 ssi_tid;
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__u32 ssi_band;
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__u32 ssi_overrun;
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__u32 ssi_trapno;
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__s32 ssi_status;
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__s32 ssi_int;
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__u64 ssi_ptr;
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__u64 ssi_utime;
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__u64 ssi_stime;
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__u64 ssi_addr;
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__u16 ssi_addr_lsb;
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/*
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* Pad strcture to 128 bytes. Remember to update the
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* pad size when you add new members. We use a fixed
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* size structure to avoid compatibility problems with
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* future versions, and we leave extra space for additional
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* members. We use fixed size members because this strcture
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* comes out of a read(2) and we really don't want to have
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* a compat on read(2).
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*/
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__u8 __pad[46];
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};
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#ifdef __KERNEL__
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#ifdef CONFIG_SIGNALFD
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/*
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* Deliver the signal to listening signalfd.
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*/
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static inline void signalfd_notify(struct task_struct *tsk, int sig)
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{
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if (unlikely(waitqueue_active(&tsk->sighand->signalfd_wqh)))
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wake_up(&tsk->sighand->signalfd_wqh);
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}
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extern void signalfd_cleanup(struct sighand_struct *sighand);
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#else /* CONFIG_SIGNALFD */
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static inline void signalfd_notify(struct task_struct *tsk, int sig) { }
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static inline void signalfd_cleanup(struct sighand_struct *sighand) { }
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#endif /* CONFIG_SIGNALFD */
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#endif /* __KERNEL__ */
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#endif /* _LINUX_SIGNALFD_H */
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