LXR qemu/include/sysemu/os-posix.h

   1/*
   2 * posix specific declarations
   3 *
   4 * Copyright (c) 2003-2008 Fabrice Bellard
   5 * Copyright (c) 2010 Jes Sorensen <Jes.Sorensen@redhat.com>
   6 *
   7 * Permission is hereby granted, free of charge, to any person obtaining a copy
   8 * of this software and associated documentation files (the "Software"), to deal
   9 * in the Software without restriction, including without limitation the rights
  10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  11 * copies of the Software, and to permit persons to whom the Software is
  12 * furnished to do so, subject to the following conditions:
  13 *
  14 * The above copyright notice and this permission notice shall be included in
  15 * all copies or substantial portions of the Software.
  16 *
  17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  23 * THE SOFTWARE.
  24 */
  25
  26#ifndef QEMU_OS_POSIX_H
  27#define QEMU_OS_POSIX_H
  28
  29#include <sys/mman.h>
  30#include <sys/socket.h>
  31#include <netinet/in.h>
  32#include <netinet/tcp.h>
  33#include <arpa/inet.h>
  34#include <netdb.h>
  35#include <sys/un.h>
  36
  37#ifdef CONFIG_SYSMACROS
  38#include <sys/sysmacros.h>
  39#endif
  40
  41void os_set_line_buffering(void);
  42void os_set_proc_name(const char *s);
  43void os_setup_signal_handling(void);
  44void os_daemonize(void);
  45void os_setup_post(void);
  46int os_mlock(void);
  47
  48#define closesocket(s) close(s)
  49#define ioctlsocket(s, r, v) ioctl(s, r, v)
  50
  51typedef struct timeval qemu_timeval;
  52#define qemu_gettimeofday(tp) gettimeofday(tp, NULL)
  53
  54bool is_daemonized(void);
  55
  56/**
  57 * qemu_alloc_stack:
  58 * @sz: pointer to a size_t holding the requested usable stack size
  59 *
  60 * Allocate memory that can be used as a stack, for instance for
  61 * coroutines. If the memory cannot be allocated, this function
  62 * will abort (like g_malloc()). This function also inserts an
  63 * additional guard page to catch a potential stack overflow.
  64 * Note that the memory required for the guard page and alignment
  65 * and minimal stack size restrictions will increase the value of sz.
  66 *
  67 * The allocated stack must be freed with qemu_free_stack().
  68 *
  69 * Returns: pointer to (the lowest address of) the stack memory.
  70 */
  71void *qemu_alloc_stack(size_t *sz);
  72
  73/**
  74 * qemu_free_stack:
  75 * @stack: stack to free
  76 * @sz: size of stack in bytes
  77 *
  78 * Free a stack allocated via qemu_alloc_stack(). Note that sz must
  79 * be exactly the adjusted stack size returned by qemu_alloc_stack.
  80 */
  81void qemu_free_stack(void *stack, size_t sz);
  82
  83/* POSIX and Mingw32 differ in the name of the stdio lock functions.  */
  84
  85static inline void qemu_flockfile(FILE *f)
  86{
  87    flockfile(f);
  88}
  89
  90static inline void qemu_funlockfile(FILE *f)
  91{
  92    funlockfile(f);
  93}
  94
  95#endif
  96