1 /** 2 * @defgroup mman Mman 3 * @ingroup libc 4 */ 5 6 #ifndef _SYS_MMAN_H 7 #define _SYS_MMAN_H 8 #ifdef __cplusplus 9 extern "C" { 10 #endif 11 12 #include <features.h> 13 14 #define __NEED_mode_t 15 #define __NEED_size_t 16 #define __NEED_off_t 17 18 #if defined(_GNU_SOURCE) 19 #define __NEED_ssize_t 20 #endif 21 #ifdef __LITEOS__ 22 #define __NEED_int64_t 23 #endif 24 25 #include <bits/alltypes.h> 26 27 #define MAP_FAILED ((void *) -1) 28 29 #define MAP_SHARED 0x01 30 #define MAP_PRIVATE 0x02 31 #define MAP_SHARED_VALIDATE 0x03 32 #define MAP_TYPE 0x0f 33 #define MAP_FIXED 0x10 34 #define MAP_ANON 0x20 35 #define MAP_ANONYMOUS MAP_ANON 36 #define MAP_NORESERVE 0x4000 37 #define MAP_GROWSDOWN 0x0100 38 #define MAP_DENYWRITE 0x0800 39 #define MAP_EXECUTABLE 0x1000 40 #define MAP_LOCKED 0x2000 41 #define MAP_POPULATE 0x8000 42 #define MAP_NONBLOCK 0x10000 43 #define MAP_STACK 0x20000 44 #define MAP_HUGETLB 0x40000 45 #define MAP_SYNC 0x80000 46 #define MAP_FIXED_NOREPLACE 0x100000 47 #define MAP_FILE 0 48 49 #define MAP_HUGE_SHIFT 26 50 #define MAP_HUGE_MASK 0x3f 51 #define MAP_HUGE_64KB (16 << 26) 52 #define MAP_HUGE_512KB (19 << 26) 53 #define MAP_HUGE_1MB (20 << 26) 54 #define MAP_HUGE_2MB (21 << 26) 55 #define MAP_HUGE_8MB (23 << 26) 56 #define MAP_HUGE_16MB (24 << 26) 57 #define MAP_HUGE_32MB (25 << 26) 58 #define MAP_HUGE_256MB (28 << 26) 59 #define MAP_HUGE_512MB (29 << 26) 60 #define MAP_HUGE_1GB (30 << 26) 61 #define MAP_HUGE_2GB (31 << 26) 62 #define MAP_HUGE_16GB (34U << 26) 63 64 #define PROT_NONE 0 65 #define PROT_READ 1 66 #define PROT_WRITE 2 67 #define PROT_EXEC 4 68 #define PROT_GROWSDOWN 0x01000000 69 #define PROT_GROWSUP 0x02000000 70 71 #define MS_ASYNC 1 72 #define MS_INVALIDATE 2 73 #define MS_SYNC 4 74 75 #define MCL_CURRENT 1 76 #define MCL_FUTURE 2 77 #define MCL_ONFAULT 4 78 79 #define POSIX_MADV_NORMAL 0 80 #define POSIX_MADV_RANDOM 1 81 #define POSIX_MADV_SEQUENTIAL 2 82 #define POSIX_MADV_WILLNEED 3 83 #define POSIX_MADV_DONTNEED 4 84 85 #if defined(_GNU_SOURCE) || defined(_BSD_SOURCE) 86 #define MADV_NORMAL 0 87 #define MADV_RANDOM 1 88 #define MADV_SEQUENTIAL 2 89 #define MADV_WILLNEED 3 90 #define MADV_DONTNEED 4 91 #define MADV_FREE 8 92 #define MADV_REMOVE 9 93 #define MADV_DONTFORK 10 94 #define MADV_DOFORK 11 95 #define MADV_MERGEABLE 12 96 #define MADV_UNMERGEABLE 13 97 #define MADV_HUGEPAGE 14 98 #define MADV_NOHUGEPAGE 15 99 #define MADV_DONTDUMP 16 100 #define MADV_DODUMP 17 101 #define MADV_WIPEONFORK 18 102 #define MADV_KEEPONFORK 19 103 #define MADV_COLD 20 104 #define MADV_PAGEOUT 21 105 #define MADV_HWPOISON 100 106 #define MADV_SOFT_OFFLINE 101 107 #endif 108 109 #ifdef _GNU_SOURCE 110 #define MREMAP_MAYMOVE 1 111 #define MREMAP_FIXED 2 112 113 #define MLOCK_ONFAULT 0x01 114 115 #define MFD_CLOEXEC 0x0001U 116 #define MFD_ALLOW_SEALING 0x0002U 117 #define MFD_HUGETLB 0x0004U 118 #endif 119 120 #include <bits/mman.h> 121 122 /** 123 * @ingroup mman 124 * 125 * @par Description: 126 * This function shall establish a mapping between an address space and a memory object. 127 * 128 * @attention 129 * <ul> 130 * <li>This API just returns the pointer to the offset parameter on LiteOS.</li> 131 * <li>The macro __USE_FILE_OFFSET64 should have been defined for this api.</li> 132 * </ul> 133 * 134 * @retval #void* pointer to the offset parameter is returned. 135 * 136 * @par Dependency: 137 * <ul><li>mman.h</li></ul> 138 * 139 * @see None 140 * 141 */ 142 void *mmap (void *, size_t, int, int, int, off_t); 143 int munmap (void *, size_t); 144 145 int mprotect (void *, size_t, int); 146 int msync (void *, size_t, int); 147 148 int posix_madvise (void *, size_t, int); 149 150 int mlock (const void *, size_t); 151 int munlock (const void *, size_t); 152 int mlockall (int); 153 int munlockall (void); 154 155 #ifdef _GNU_SOURCE 156 void *mremap (void *, size_t, size_t, int, ...); 157 int remap_file_pages (void *, size_t, int, size_t, int); 158 int memfd_create (const char *, unsigned); 159 int mlock2 (const void *, size_t, unsigned); 160 #endif 161 162 #if defined(_GNU_SOURCE) || defined(_BSD_SOURCE) 163 int madvise (void *, size_t, int); 164 int mincore (void *, size_t, unsigned char *); 165 #endif 166 167 int shm_open (const char *, int, mode_t); 168 int shm_unlink (const char *); 169 170 #if defined(_LARGEFILE64_SOURCE) || defined(_GNU_SOURCE) 171 #define mmap64 mmap 172 #ifdef __LITEOS__ 173 #define off64_t int64_t 174 #else 175 #define off64_t off_t 176 #endif 177 #endif 178 179 #ifdef __cplusplus 180 } 181 #endif 182 #endif 183