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 void os_set_line_buffering(void); 38 void os_set_proc_name(const char *s); 39 void os_setup_signal_handling(void); 40 void os_daemonize(void); 41 void os_setup_post(void); 42 int os_mlock(void); 43 44 #define closesocket(s) close(s) 45 #define ioctlsocket(s, r, v) ioctl(s, r, v) 46 47 typedef struct timeval qemu_timeval; 48 #define qemu_gettimeofday(tp) gettimeofday(tp, NULL) 49 50 #ifndef CONFIG_UTIMENSAT 51 #ifndef UTIME_NOW 52 # define UTIME_NOW ((1l << 30) - 1l) 53 #endif 54 #ifndef UTIME_OMIT 55 # define UTIME_OMIT ((1l << 30) - 2l) 56 #endif 57 #endif 58 typedef struct timespec qemu_timespec; 59 int qemu_utimens(const char *path, const qemu_timespec *times); 60 61 bool is_daemonized(void); 62 63 /** 64 * qemu_alloc_stack: 65 * @sz: pointer to a size_t holding the requested usable stack size 66 * 67 * Allocate memory that can be used as a stack, for instance for 68 * coroutines. If the memory cannot be allocated, this function 69 * will abort (like g_malloc()). This function also inserts an 70 * additional guard page to catch a potential stack overflow. 71 * Note that the memory required for the guard page and alignment 72 * and minimal stack size restrictions will increase the value of sz. 73 * 74 * The allocated stack must be freed with qemu_free_stack(). 75 * 76 * Returns: pointer to (the lowest address of) the stack memory. 77 */ 78 void *qemu_alloc_stack(size_t *sz); 79 80 /** 81 * qemu_free_stack: 82 * @stack: stack to free 83 * @sz: size of stack in bytes 84 * 85 * Free a stack allocated via qemu_alloc_stack(). Note that sz must 86 * be exactly the adjusted stack size returned by qemu_alloc_stack. 87 */ 88 void qemu_free_stack(void *stack, size_t sz); 89 90 #endif 91