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