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 *user_id); 53 void os_set_chroot(const char *path); 54 void os_setup_limits(void); 55 void os_setup_post(void); 56 int os_mlock(void); 57 58 /** 59 * qemu_alloc_stack: 60 * @sz: pointer to a size_t holding the requested usable stack size 61 * 62 * Allocate memory that can be used as a stack, for instance for 63 * coroutines. If the memory cannot be allocated, this function 64 * will abort (like g_malloc()). This function also inserts an 65 * additional guard page to catch a potential stack overflow. 66 * Note that the memory required for the guard page and alignment 67 * and minimal stack size restrictions will increase the value of sz. 68 * 69 * The allocated stack must be freed with qemu_free_stack(). 70 * 71 * Returns: pointer to (the lowest address of) the stack memory. 72 */ 73 void *qemu_alloc_stack(size_t *sz); 74 75 /** 76 * qemu_free_stack: 77 * @stack: stack to free 78 * @sz: size of stack in bytes 79 * 80 * Free a stack allocated via qemu_alloc_stack(). Note that sz must 81 * be exactly the adjusted stack size returned by qemu_alloc_stack. 82 */ 83 void qemu_free_stack(void *stack, size_t sz); 84 85 /* POSIX and Mingw32 differ in the name of the stdio lock functions. */ 86 87 static inline void qemu_flockfile(FILE *f) 88 { 89 flockfile(f); 90 } 91 92 static inline void qemu_funlockfile(FILE *f) 93 { 94 funlockfile(f); 95 } 96 97 #ifdef __cplusplus 98 } 99 #endif 100 101 #endif 102