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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#else
34#include "exec/poison.h"
35#endif
36#include "qemu/compiler.h"
37
38
39
40
41
42#ifndef __STDC_CONSTANT_MACROS
43#define __STDC_CONSTANT_MACROS
44#endif
45#ifndef __STDC_LIMIT_MACROS
46#define __STDC_LIMIT_MACROS
47#endif
48#ifndef __STDC_FORMAT_MACROS
49#define __STDC_FORMAT_MACROS
50#endif
51
52
53
54
55#ifdef __APPLE__
56#define daemon qemu_fake_daemon_function
57#include <stdlib.h>
58#undef daemon
59extern int daemon(int, int);
60#endif
61
62#include <stdarg.h>
63#include <stddef.h>
64#include <stdbool.h>
65#include <stdint.h>
66#include <sys/types.h>
67#include <stdlib.h>
68#include <stdio.h>
69#include <string.h>
70#include <strings.h>
71#include <inttypes.h>
72#include <limits.h>
73
74
75#include <unistd.h>
76#include <time.h>
77#include <ctype.h>
78#include <errno.h>
79#include <fcntl.h>
80#include <sys/stat.h>
81#include <sys/time.h>
82#include <assert.h>
83
84
85#include <setjmp.h>
86#include <signal.h>
87
88#ifdef __OpenBSD__
89#include <sys/signal.h>
90#endif
91
92#ifndef _WIN32
93#include <sys/wait.h>
94#else
95#define WIFEXITED(x) 1
96#define WEXITSTATUS(x) (x)
97#endif
98
99#ifdef _WIN32
100#include "sysemu/os-win32.h"
101#endif
102
103#ifdef CONFIG_POSIX
104#include "sysemu/os-posix.h"
105#endif
106
107#include "glib-compat.h"
108#include "qemu/typedefs.h"
109
110#ifndef O_LARGEFILE
111#define O_LARGEFILE 0
112#endif
113#ifndef O_BINARY
114#define O_BINARY 0
115#endif
116#ifndef MAP_ANONYMOUS
117#define MAP_ANONYMOUS MAP_ANON
118#endif
119#ifndef ENOMEDIUM
120#define ENOMEDIUM ENODEV
121#endif
122#if !defined(ENOTSUP)
123#define ENOTSUP 4096
124#endif
125#if !defined(ECANCELED)
126#define ECANCELED 4097
127#endif
128#if !defined(EMEDIUMTYPE)
129#define EMEDIUMTYPE 4098
130#endif
131#if !defined(ESHUTDOWN)
132#define ESHUTDOWN 4099
133#endif
134#ifndef TIME_MAX
135#define TIME_MAX LONG_MAX
136#endif
137
138
139#if UINTPTR_MAX == UINT32_MAX
140# define HOST_LONG_BITS 32
141#elif UINTPTR_MAX == UINT64_MAX
142# define HOST_LONG_BITS 64
143#else
144# error Unknown pointer size
145#endif
146
147
148
149
150#if defined(HAVE_BROKEN_SIZE_MAX) && HAVE_BROKEN_SIZE_MAX
151#undef SIZE_MAX
152#define SIZE_MAX ((size_t)-1)
153#endif
154
155#ifndef MIN
156#define MIN(a, b) (((a) < (b)) ? (a) : (b))
157#endif
158#ifndef MAX
159#define MAX(a, b) (((a) > (b)) ? (a) : (b))
160#endif
161
162
163
164#ifndef MIN_NON_ZERO
165#define MIN_NON_ZERO(a, b) ((a) == 0 ? (b) : \
166 ((b) == 0 ? (a) : (MIN(a, b))))
167#endif
168
169
170#define QEMU_ALIGN_DOWN(n, m) ((n) / (m) * (m))
171
172
173
174#define QEMU_ALIGN_UP(n, m) QEMU_ALIGN_DOWN((n) + (m) - 1, (m))
175
176
177#define QEMU_IS_ALIGNED(n, m) (((n) % (m)) == 0)
178
179
180#define QEMU_ALIGN_PTR_DOWN(p, n) \
181 ((typeof(p))QEMU_ALIGN_DOWN((uintptr_t)(p), (n)))
182
183
184#define QEMU_ALIGN_PTR_UP(p, n) \
185 ((typeof(p))QEMU_ALIGN_UP((uintptr_t)(p), (n)))
186
187
188#define QEMU_PTR_IS_ALIGNED(p, n) QEMU_IS_ALIGNED((uintptr_t)(p), (n))
189
190
191
192
193#ifndef ROUND_UP
194#define ROUND_UP(n, d) (((n) + (d) - 1) & -(0 ? (n) : (d)))
195#endif
196
197#ifndef DIV_ROUND_UP
198#define DIV_ROUND_UP(n, d) (((n) + (d) - 1) / (d))
199#endif
200
201
202
203
204
205#define QEMU_IS_ARRAY(x) (!__builtin_types_compatible_p(typeof(x), \
206 typeof(&(x)[0])))
207#ifndef ARRAY_SIZE
208#define ARRAY_SIZE(x) ((sizeof(x) / sizeof((x)[0])) + \
209 QEMU_BUILD_BUG_ON_ZERO(!QEMU_IS_ARRAY(x)))
210#endif
211
212int qemu_daemon(int nochdir, int noclose);
213void *qemu_try_memalign(size_t alignment, size_t size);
214void *qemu_memalign(size_t alignment, size_t size);
215void *qemu_anon_ram_alloc(size_t size, uint64_t *align);
216void qemu_vfree(void *ptr);
217void qemu_anon_ram_free(void *ptr, size_t size);
218
219#define QEMU_MADV_INVALID -1
220
221#if defined(CONFIG_MADVISE)
222
223#define QEMU_MADV_WILLNEED MADV_WILLNEED
224#define QEMU_MADV_DONTNEED MADV_DONTNEED
225#ifdef MADV_DONTFORK
226#define QEMU_MADV_DONTFORK MADV_DONTFORK
227#else
228#define QEMU_MADV_DONTFORK QEMU_MADV_INVALID
229#endif
230#ifdef MADV_MERGEABLE
231#define QEMU_MADV_MERGEABLE MADV_MERGEABLE
232#else
233#define QEMU_MADV_MERGEABLE QEMU_MADV_INVALID
234#endif
235#ifdef MADV_UNMERGEABLE
236#define QEMU_MADV_UNMERGEABLE MADV_UNMERGEABLE
237#else
238#define QEMU_MADV_UNMERGEABLE QEMU_MADV_INVALID
239#endif
240#ifdef MADV_DODUMP
241#define QEMU_MADV_DODUMP MADV_DODUMP
242#else
243#define QEMU_MADV_DODUMP QEMU_MADV_INVALID
244#endif
245#ifdef MADV_DONTDUMP
246#define QEMU_MADV_DONTDUMP MADV_DONTDUMP
247#else
248#define QEMU_MADV_DONTDUMP QEMU_MADV_INVALID
249#endif
250#ifdef MADV_HUGEPAGE
251#define QEMU_MADV_HUGEPAGE MADV_HUGEPAGE
252#else
253#define QEMU_MADV_HUGEPAGE QEMU_MADV_INVALID
254#endif
255#ifdef MADV_NOHUGEPAGE
256#define QEMU_MADV_NOHUGEPAGE MADV_NOHUGEPAGE
257#else
258#define QEMU_MADV_NOHUGEPAGE QEMU_MADV_INVALID
259#endif
260
261#elif defined(CONFIG_POSIX_MADVISE)
262
263#define QEMU_MADV_WILLNEED POSIX_MADV_WILLNEED
264#define QEMU_MADV_DONTNEED POSIX_MADV_DONTNEED
265#define QEMU_MADV_DONTFORK QEMU_MADV_INVALID
266#define QEMU_MADV_MERGEABLE QEMU_MADV_INVALID
267#define QEMU_MADV_UNMERGEABLE QEMU_MADV_INVALID
268#define QEMU_MADV_DODUMP QEMU_MADV_INVALID
269#define QEMU_MADV_DONTDUMP QEMU_MADV_INVALID
270#define QEMU_MADV_HUGEPAGE QEMU_MADV_INVALID
271#define QEMU_MADV_NOHUGEPAGE QEMU_MADV_INVALID
272
273#else
274
275#define QEMU_MADV_WILLNEED QEMU_MADV_INVALID
276#define QEMU_MADV_DONTNEED QEMU_MADV_INVALID
277#define QEMU_MADV_DONTFORK QEMU_MADV_INVALID
278#define QEMU_MADV_MERGEABLE QEMU_MADV_INVALID
279#define QEMU_MADV_UNMERGEABLE QEMU_MADV_INVALID
280#define QEMU_MADV_DODUMP QEMU_MADV_INVALID
281#define QEMU_MADV_DONTDUMP QEMU_MADV_INVALID
282#define QEMU_MADV_HUGEPAGE QEMU_MADV_INVALID
283#define QEMU_MADV_NOHUGEPAGE QEMU_MADV_INVALID
284
285#endif
286
287#ifdef _WIN32
288#define HAVE_CHARDEV_SERIAL 1
289#elif defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
290 || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \
291 || defined(__GLIBC__)
292#define HAVE_CHARDEV_SERIAL 1
293#endif
294
295#if defined(__linux__) || defined(__FreeBSD__) || \
296 defined(__FreeBSD_kernel__) || defined(__DragonFly__)
297#define HAVE_CHARDEV_PARPORT 1
298#endif
299
300#if defined(CONFIG_LINUX)
301#ifndef BUS_MCEERR_AR
302#define BUS_MCEERR_AR 4
303#endif
304#ifndef BUS_MCEERR_AO
305#define BUS_MCEERR_AO 5
306#endif
307#endif
308
309#if defined(__linux__) && \
310 (defined(__x86_64__) || defined(__arm__) || defined(__aarch64__))
311
312
313
314# define QEMU_VMALLOC_ALIGN (512 * 4096)
315#elif defined(__linux__) && defined(__s390x__)
316
317# define QEMU_VMALLOC_ALIGN (256 * 4096)
318#else
319# define QEMU_VMALLOC_ALIGN getpagesize()
320#endif
321
322#ifdef CONFIG_POSIX
323struct qemu_signalfd_siginfo {
324 uint32_t ssi_signo;
325 int32_t ssi_errno;
326 int32_t ssi_code;
327 uint32_t ssi_pid;
328 uint32_t ssi_uid;
329 int32_t ssi_fd;
330 uint32_t ssi_tid;
331 uint32_t ssi_band;
332 uint32_t ssi_overrun;
333 uint32_t ssi_trapno;
334 int32_t ssi_status;
335 int32_t ssi_int;
336 uint64_t ssi_ptr;
337 uint64_t ssi_utime;
338 uint64_t ssi_stime;
339 uint64_t ssi_addr;
340
341 uint8_t pad[48];
342
343};
344
345int qemu_signalfd(const sigset_t *mask);
346void sigaction_invoke(struct sigaction *action,
347 struct qemu_signalfd_siginfo *info);
348#endif
349
350int qemu_madvise(void *addr, size_t len, int advice);
351
352int qemu_open(const char *name, int flags, ...);
353int qemu_close(int fd);
354#ifndef _WIN32
355int qemu_dup(int fd);
356#endif
357int qemu_lock_fd(int fd, int64_t start, int64_t len, bool exclusive);
358int qemu_unlock_fd(int fd, int64_t start, int64_t len);
359int qemu_lock_fd_test(int fd, int64_t start, int64_t len, bool exclusive);
360bool qemu_has_ofd_lock(void);
361
362#if defined(__HAIKU__) && defined(__i386__)
363#define FMT_pid "%ld"
364#elif defined(WIN64)
365#define FMT_pid "%" PRId64
366#else
367#define FMT_pid "%d"
368#endif
369
370int qemu_create_pidfile(const char *filename);
371int qemu_get_thread_id(void);
372
373#ifndef CONFIG_IOVEC
374struct iovec {
375 void *iov_base;
376 size_t iov_len;
377};
378
379
380
381#define IOV_MAX 1024
382
383ssize_t readv(int fd, const struct iovec *iov, int iov_cnt);
384ssize_t writev(int fd, const struct iovec *iov, int iov_cnt);
385#else
386#include <sys/uio.h>
387#endif
388
389#ifdef _WIN32
390static inline void qemu_timersub(const struct timeval *val1,
391 const struct timeval *val2,
392 struct timeval *res)
393{
394 res->tv_sec = val1->tv_sec - val2->tv_sec;
395 if (val1->tv_usec < val2->tv_usec) {
396 res->tv_sec--;
397 res->tv_usec = val1->tv_usec - val2->tv_usec + 1000 * 1000;
398 } else {
399 res->tv_usec = val1->tv_usec - val2->tv_usec;
400 }
401}
402#else
403#define qemu_timersub timersub
404#endif
405
406void qemu_set_cloexec(int fd);
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414
415#define QEMU_HW_VERSION "2.5+"
416
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420
421void qemu_set_hw_version(const char *);
422const char *qemu_hw_version(void);
423
424void fips_set_state(bool requested);
425bool fips_get_state(void);
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436char *qemu_get_local_state_pathname(const char *relative_pathname);
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441void qemu_init_exec_dir(const char *argv0);
442
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445char *qemu_get_exec_dir(void);
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453
454unsigned long qemu_getauxval(unsigned long type);
455
456void qemu_set_tty_echo(int fd, bool echo);
457
458void os_mem_prealloc(int fd, char *area, size_t sz, int smp_cpus,
459 Error **errp);
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469char *qemu_get_pid_name(pid_t pid);
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483pid_t qemu_fork(Error **errp);
484
485extern int qemu_icache_linesize;
486extern int qemu_dcache_linesize;
487
488#endif
489