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      1 /*
      2  *  include/linux/signalfd.h
      3  *
      4  *  Copyright (C) 2007  Davide Libenzi <davidel (at) xmailserver.org>
      5  *
      6  */
      7 
      8 #ifndef _LINUX_SIGNALFD_H
      9 #define _LINUX_SIGNALFD_H
     10 
     11 #include <linux/types.h>
     12 /* For O_CLOEXEC and O_NONBLOCK */
     13 #include <linux/fcntl.h>
     14 
     15 /* Flags for signalfd4.  */
     16 #define SFD_CLOEXEC O_CLOEXEC
     17 #define SFD_NONBLOCK O_NONBLOCK
     18 
     19 struct signalfd_siginfo {
     20 	__u32 ssi_signo;
     21 	__s32 ssi_errno;
     22 	__s32 ssi_code;
     23 	__u32 ssi_pid;
     24 	__u32 ssi_uid;
     25 	__s32 ssi_fd;
     26 	__u32 ssi_tid;
     27 	__u32 ssi_band;
     28 	__u32 ssi_overrun;
     29 	__u32 ssi_trapno;
     30 	__s32 ssi_status;
     31 	__s32 ssi_int;
     32 	__u64 ssi_ptr;
     33 	__u64 ssi_utime;
     34 	__u64 ssi_stime;
     35 	__u64 ssi_addr;
     36 	__u16 ssi_addr_lsb;
     37 
     38 	/*
     39 	 * Pad strcture to 128 bytes. Remember to update the
     40 	 * pad size when you add new members. We use a fixed
     41 	 * size structure to avoid compatibility problems with
     42 	 * future versions, and we leave extra space for additional
     43 	 * members. We use fixed size members because this strcture
     44 	 * comes out of a read(2) and we really don't want to have
     45 	 * a compat on read(2).
     46 	 */
     47 	__u8 __pad[46];
     48 };
     49 
     50 
     51 
     52 #endif /* _LINUX_SIGNALFD_H */
     53