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
  41 #ifdef __cplusplus
  42 extern "C" {
  43 #endif
  44
  45 int os_parse_cmd_args(int index, const char *optarg);
  46 void os_set_line_buffering(void);
  47 void os_setup_early_signal_handling(void);
  48 void os_set_proc_name(const char *s);
  49 void os_setup_signal_handling(void);
  50 void os_daemonize(void);
  51 void os_setup_post(void);
  52 int os_mlock(void);
  53
  54 #define closesocket(s) close(s)
  55 #define ioctlsocket(s, r, v) ioctl(s, r, v)
  56
  57 int os_set_daemonize(bool d);
  58 bool is_daemonized(void);
  59
  60 /**
  61  * qemu_alloc_stack:
  62  * @sz: pointer to a size_t holding the requested usable stack size
  63  *
  64  * Allocate memory that can be used as a stack, for instance for
  65  * coroutines. If the memory cannot be allocated, this function
  66  * will abort (like g_malloc()). This function also inserts an
  67  * additional guard page to catch a potential stack overflow.
  68  * Note that the memory required for the guard page and alignment
  69  * and minimal stack size restrictions will increase the value of sz.
  70  *
  71  * The allocated stack must be freed with qemu_free_stack().
  72  *
  73  * Returns: pointer to (the lowest address of) the stack memory.
  74  */
  75 void *qemu_alloc_stack(size_t *sz);
  76
  77 /**
  78  * qemu_free_stack:
  79  * @stack: stack to free
  80  * @sz: size of stack in bytes
  81  *
  82  * Free a stack allocated via qemu_alloc_stack(). Note that sz must
  83  * be exactly the adjusted stack size returned by qemu_alloc_stack.
  84  */
  85 void qemu_free_stack(void *stack, size_t sz);
  86
  87 /* POSIX and Mingw32 differ in the name of the stdio lock functions.  */
  88
  89 static inline void qemu_flockfile(FILE *f)
  90 {
  91     flockfile(f);
  92 }
  93
  94 static inline void qemu_funlockfile(FILE *f)
  95 {
  96     funlockfile(f);
  97 }
  98
  99 #ifdef __cplusplus
 100 }
 101 #endif
 102
 103 #endif