compatfd.h

   1 /*
   2  * signalfd/eventfd compatibility
   3  *
   4  * Copyright IBM, Corp. 2008
   5  *
   6  * Authors:
   7  *  Anthony Liguori   <aliguori@us.ibm.com>
   8  *
   9  * This work is licensed under the terms of the GNU GPL, version 2.  See
  10  * the COPYING file in the top-level directory.
  11  *
  12  */
  13
  14 #ifndef QEMU_COMPATFD_H
  15 #define QEMU_COMPATFD_H
  16
  17 #include <signal.h>
  18
  19 struct qemu_signalfd_siginfo {
  20     uint32_t ssi_signo;   /* Signal number */
  21     int32_t  ssi_errno;   /* Error number (unused) */
  22     int32_t  ssi_code;    /* Signal code */
  23     uint32_t ssi_pid;     /* PID of sender */
  24     uint32_t ssi_uid;     /* Real UID of sender */
  25     int32_t  ssi_fd;      /* File descriptor (SIGIO) */
  26     uint32_t ssi_tid;     /* Kernel timer ID (POSIX timers) */
  27     uint32_t ssi_band;    /* Band event (SIGIO) */
  28     uint32_t ssi_overrun; /* POSIX timer overrun count */
  29     uint32_t ssi_trapno;  /* Trap number that caused signal */
  30     int32_t  ssi_status;  /* Exit status or signal (SIGCHLD) */
  31     int32_t  ssi_int;     /* Integer sent by sigqueue(2) */
  32     uint64_t ssi_ptr;     /* Pointer sent by sigqueue(2) */
  33     uint64_t ssi_utime;   /* User CPU time consumed (SIGCHLD) */
  34     uint64_t ssi_stime;   /* System CPU time consumed (SIGCHLD) */
  35     uint64_t ssi_addr;    /* Address that generated signal
  36                              (for hardware-generated signals) */
  37     uint8_t  pad[48];     /* Pad size to 128 bytes (allow for
  38                              additional fields in the future) */
  39 };
  40
  41 int qemu_signalfd(const sigset_t *mask);
  42 bool qemu_signalfd_available(void);
  43
  44 #endif