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27#ifndef QEMU_OSDEP_H
28#define QEMU_OSDEP_H
29
30#include "config-host.h"
31#ifdef NEED_CPU_H
32#include "config-target.h"
33#endif
34#include "qemu/compiler.h"
35
36
37
38
39
40#ifndef __STDC_CONSTANT_MACROS
41#define __STDC_CONSTANT_MACROS
42#endif
43#ifndef __STDC_LIMIT_MACROS
44#define __STDC_LIMIT_MACROS
45#endif
46#ifndef __STDC_FORMAT_MACROS
47#define __STDC_FORMAT_MACROS
48#endif
49
50
51
52
53#ifdef __APPLE__
54#define daemon qemu_fake_daemon_function
55#include <stdlib.h>
56#undef daemon
57extern int daemon(int, int);
58#endif
59
60#include <stdarg.h>
61#include <stddef.h>
62#include <stdbool.h>
63#include <stdint.h>
64#include <sys/types.h>
65#include <stdlib.h>
66#include <stdio.h>
67#include <string.h>
68#include <strings.h>
69#include <inttypes.h>
70#include <limits.h>
71
72
73#include <unistd.h>
74#include <time.h>
75#include <ctype.h>
76#include <errno.h>
77#include <fcntl.h>
78#include <sys/stat.h>
79#include <sys/time.h>
80#include <assert.h>
81
82
83#include <setjmp.h>
84#include <signal.h>
85
86#ifdef __OpenBSD__
87#include <sys/signal.h>
88#endif
89
90#ifndef _WIN32
91#include <sys/wait.h>
92#else
93#define WIFEXITED(x) 1
94#define WEXITSTATUS(x) (x)
95#endif
96
97#ifdef _WIN32
98#include "sysemu/os-win32.h"
99#endif
100
101#ifdef CONFIG_POSIX
102#include "sysemu/os-posix.h"
103#endif
104
105#include "glib-compat.h"
106#include "qemu/typedefs.h"
107
108#ifndef O_LARGEFILE
109#define O_LARGEFILE 0
110#endif
111#ifndef O_BINARY
112#define O_BINARY 0
113#endif
114#ifndef MAP_ANONYMOUS
115#define MAP_ANONYMOUS MAP_ANON
116#endif
117#ifndef ENOMEDIUM
118#define ENOMEDIUM ENODEV
119#endif
120#if !defined(ENOTSUP)
121#define ENOTSUP 4096
122#endif
123#if !defined(ECANCELED)
124#define ECANCELED 4097
125#endif
126#if !defined(EMEDIUMTYPE)
127#define EMEDIUMTYPE 4098
128#endif
129#ifndef TIME_MAX
130#define TIME_MAX LONG_MAX
131#endif
132
133
134#if UINTPTR_MAX == UINT32_MAX
135# define HOST_LONG_BITS 32
136#elif UINTPTR_MAX == UINT64_MAX
137# define HOST_LONG_BITS 64
138#else
139# error Unknown pointer size
140#endif
141
142#ifndef MIN
143#define MIN(a, b) (((a) < (b)) ? (a) : (b))
144#endif
145#ifndef MAX
146#define MAX(a, b) (((a) > (b)) ? (a) : (b))
147#endif
148
149
150
151#ifndef MIN_NON_ZERO
152#define MIN_NON_ZERO(a, b) (((a) != 0 && (a) < (b)) ? (a) : (b))
153#endif
154
155
156#define QEMU_ALIGN_DOWN(n, m) ((n) / (m) * (m))
157
158
159#define QEMU_ALIGN_UP(n, m) QEMU_ALIGN_DOWN((n) + (m) - 1, (m))
160
161#ifndef ROUND_UP
162#define ROUND_UP(n,d) (((n) + (d) - 1) & -(d))
163#endif
164
165#ifndef DIV_ROUND_UP
166#define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d))
167#endif
168
169#ifndef ARRAY_SIZE
170#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
171#endif
172
173int qemu_daemon(int nochdir, int noclose);
174void *qemu_try_memalign(size_t alignment, size_t size);
175void *qemu_memalign(size_t alignment, size_t size);
176void *qemu_anon_ram_alloc(size_t size, uint64_t *align);
177void qemu_vfree(void *ptr);
178void qemu_anon_ram_free(void *ptr, size_t size);
179
180#define QEMU_MADV_INVALID -1
181
182#if defined(CONFIG_MADVISE)
183
184#include <sys/mman.h>
185
186#define QEMU_MADV_WILLNEED MADV_WILLNEED
187#define QEMU_MADV_DONTNEED MADV_DONTNEED
188#ifdef MADV_DONTFORK
189#define QEMU_MADV_DONTFORK MADV_DONTFORK
190#else
191#define QEMU_MADV_DONTFORK QEMU_MADV_INVALID
192#endif
193#ifdef MADV_MERGEABLE
194#define QEMU_MADV_MERGEABLE MADV_MERGEABLE
195#else
196#define QEMU_MADV_MERGEABLE QEMU_MADV_INVALID
197#endif
198#ifdef MADV_UNMERGEABLE
199#define QEMU_MADV_UNMERGEABLE MADV_UNMERGEABLE
200#else
201#define QEMU_MADV_UNMERGEABLE QEMU_MADV_INVALID
202#endif
203#ifdef MADV_DODUMP
204#define QEMU_MADV_DODUMP MADV_DODUMP
205#else
206#define QEMU_MADV_DODUMP QEMU_MADV_INVALID
207#endif
208#ifdef MADV_DONTDUMP
209#define QEMU_MADV_DONTDUMP MADV_DONTDUMP
210#else
211#define QEMU_MADV_DONTDUMP QEMU_MADV_INVALID
212#endif
213#ifdef MADV_HUGEPAGE
214#define QEMU_MADV_HUGEPAGE MADV_HUGEPAGE
215#else
216#define QEMU_MADV_HUGEPAGE QEMU_MADV_INVALID
217#endif
218#ifdef MADV_NOHUGEPAGE
219#define QEMU_MADV_NOHUGEPAGE MADV_NOHUGEPAGE
220#else
221#define QEMU_MADV_NOHUGEPAGE QEMU_MADV_INVALID
222#endif
223
224#elif defined(CONFIG_POSIX_MADVISE)
225
226#define QEMU_MADV_WILLNEED POSIX_MADV_WILLNEED
227#define QEMU_MADV_DONTNEED POSIX_MADV_DONTNEED
228#define QEMU_MADV_DONTFORK QEMU_MADV_INVALID
229#define QEMU_MADV_MERGEABLE QEMU_MADV_INVALID
230#define QEMU_MADV_UNMERGEABLE QEMU_MADV_INVALID
231#define QEMU_MADV_DODUMP QEMU_MADV_INVALID
232#define QEMU_MADV_DONTDUMP QEMU_MADV_INVALID
233#define QEMU_MADV_HUGEPAGE QEMU_MADV_INVALID
234#define QEMU_MADV_NOHUGEPAGE QEMU_MADV_INVALID
235
236#else
237
238#define QEMU_MADV_WILLNEED QEMU_MADV_INVALID
239#define QEMU_MADV_DONTNEED QEMU_MADV_INVALID
240#define QEMU_MADV_DONTFORK QEMU_MADV_INVALID
241#define QEMU_MADV_MERGEABLE QEMU_MADV_INVALID
242#define QEMU_MADV_UNMERGEABLE QEMU_MADV_INVALID
243#define QEMU_MADV_DODUMP QEMU_MADV_INVALID
244#define QEMU_MADV_DONTDUMP QEMU_MADV_INVALID
245#define QEMU_MADV_HUGEPAGE QEMU_MADV_INVALID
246#define QEMU_MADV_NOHUGEPAGE QEMU_MADV_INVALID
247
248#endif
249
250int qemu_madvise(void *addr, size_t len, int advice);
251
252int qemu_open(const char *name, int flags, ...);
253int qemu_close(int fd);
254
255#if defined(__HAIKU__) && defined(__i386__)
256#define FMT_pid "%ld"
257#elif defined(WIN64)
258#define FMT_pid "%" PRId64
259#else
260#define FMT_pid "%d"
261#endif
262
263int qemu_create_pidfile(const char *filename);
264int qemu_get_thread_id(void);
265
266#ifndef CONFIG_IOVEC
267struct iovec {
268 void *iov_base;
269 size_t iov_len;
270};
271
272
273
274#define IOV_MAX 1024
275
276ssize_t readv(int fd, const struct iovec *iov, int iov_cnt);
277ssize_t writev(int fd, const struct iovec *iov, int iov_cnt);
278#else
279#include <sys/uio.h>
280#endif
281
282#ifdef _WIN32
283static inline void qemu_timersub(const struct timeval *val1,
284 const struct timeval *val2,
285 struct timeval *res)
286{
287 res->tv_sec = val1->tv_sec - val2->tv_sec;
288 if (val1->tv_usec < val2->tv_usec) {
289 res->tv_sec--;
290 res->tv_usec = val1->tv_usec - val2->tv_usec + 1000 * 1000;
291 } else {
292 res->tv_usec = val1->tv_usec - val2->tv_usec;
293 }
294}
295#else
296#define qemu_timersub timersub
297#endif
298
299void qemu_set_cloexec(int fd);
300
301
302
303
304
305void qemu_set_hw_version(const char *);
306const char *qemu_hw_version(void);
307
308void fips_set_state(bool requested);
309bool fips_get_state(void);
310
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319
320char *qemu_get_local_state_pathname(const char *relative_pathname);
321
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323
324
325void qemu_init_exec_dir(const char *argv0);
326
327
328
329char *qemu_get_exec_dir(void);
330
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336
337
338unsigned long qemu_getauxval(unsigned long type);
339
340void qemu_set_tty_echo(int fd, bool echo);
341
342void os_mem_prealloc(int fd, char *area, size_t sz);
343
344int qemu_read_password(char *buf, int buf_size);
345
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357
358pid_t qemu_fork(Error **errp);
359
360#endif
361