1 /* SPDX-License-Identifier: MIT */
2 /*
3 * posix specific declarations forked from os-posix.h, removing functions not
4 * working on Emscripten
5 *
6 * Copyright (c) 2003-2008 Fabrice Bellard
7 * Copyright (c) 2010 Jes Sorensen <Jes.Sorensen@redhat.com>
8 *
9 * Permission is hereby granted, free of charge, to any person obtaining a copy
10 * of this software and associated documentation files (the "Software"), to deal
11 * in the Software without restriction, including without limitation the rights
12 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
13 * copies of the Software, and to permit persons to whom the Software is
14 * furnished to do so, subject to the following conditions:
15 *
16 * The above copyright notice and this permission notice shall be included in
17 * all copies or substantial portions of the Software.
18 *
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
20 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
22 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
23 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
24 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
25 * THE SOFTWARE.
26 */
27
28 #ifndef QEMU_OS_WASM_H
29 #define QEMU_OS_WASM_H
30
31 #include <sys/mman.h>
32 #include <sys/socket.h>
33 #include <netinet/in.h>
34 #include <netinet/tcp.h>
35 #include <arpa/inet.h>
36 #include <netdb.h>
37 #include <sys/un.h>
38
39 #ifdef CONFIG_SYSMACROS
40 #include <sys/sysmacros.h>
41 #endif
42
43 #ifdef __cplusplus
44 extern "C" {
45 #endif
46
47 void os_set_line_buffering(void);
48 void os_setup_early_signal_handling(void);
49 void os_set_proc_name(const char *s);
50 void os_setup_signal_handling(void);
51 void os_setup_limits(void);
52 void os_setup_post(void);
53 int os_mlock(bool on_fault);
os_set_daemonize(bool d)54 static inline int os_set_daemonize(bool d)
55 {
56 return -1;
57 };
58 bool is_daemonized(void);
os_daemonize(void)59 static inline void os_daemonize(void) {}
60
61 /**
62 * qemu_alloc_stack:
63 * @sz: pointer to a size_t holding the requested usable stack size
64 *
65 * Allocate memory that can be used as a stack, for instance for
66 * coroutines. If the memory cannot be allocated, this function
67 * will abort (like g_malloc()). This function also inserts an
68 * additional guard page to catch a potential stack overflow.
69 * Note that the memory required for the guard page and alignment
70 * and minimal stack size restrictions will increase the value of sz.
71 *
72 * The allocated stack must be freed with qemu_free_stack().
73 *
74 * Returns: pointer to (the lowest address of) the stack memory.
75 */
76 void *qemu_alloc_stack(size_t *sz);
77
78 /**
79 * qemu_free_stack:
80 * @stack: stack to free
81 * @sz: size of stack in bytes
82 *
83 * Free a stack allocated via qemu_alloc_stack(). Note that sz must
84 * be exactly the adjusted stack size returned by qemu_alloc_stack.
85 */
86 void qemu_free_stack(void *stack, size_t sz);
87
88 /* POSIX and Mingw32 differ in the name of the stdio lock functions. */
89
qemu_flockfile(FILE * f)90 static inline void qemu_flockfile(FILE *f)
91 {
92 flockfile(f);
93 }
94
qemu_funlockfile(FILE * f)95 static inline void qemu_funlockfile(FILE *f)
96 {
97 funlockfile(f);
98 }
99
100 #ifdef __cplusplus
101 }
102 #endif
103
104 #endif
105