os-posix.h (3114B)
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