| #ifndef QEMU_MMAP_ALLOC_H |
| #define QEMU_MMAP_ALLOC_H |
| |
| |
| size_t qemu_fd_getpagesize(int fd); |
| |
| size_t qemu_mempath_getpagesize(const char *mem_path); |
| |
| /** |
| * qemu_ram_mmap: mmap anonymous memory, the specified file or device. |
| * |
| * mmap() abstraction to map guest RAM, simplifying flag handling, taking |
| * care of alignment requirements and installing guard pages. |
| * |
| * Parameters: |
| * @fd: the file or the device to mmap |
| * @size: the number of bytes to be mmaped |
| * @align: if not zero, specify the alignment of the starting mapping address; |
| * otherwise, the alignment in use will be determined by QEMU. |
| * @qemu_map_flags: QEMU_MAP_* flags |
| * @map_offset: map starts at offset of map_offset from the start of fd |
| * |
| * Internally, MAP_PRIVATE, MAP_ANONYMOUS and MAP_SHARED_VALIDATE are set |
| * implicitly based on other parameters. |
| * |
| * Return: |
| * On success, return a pointer to the mapped area. |
| * On failure, return MAP_FAILED. |
| */ |
| void *qemu_ram_mmap(int fd, |
| size_t size, |
| size_t align, |
| uint32_t qemu_map_flags, |
| off_t map_offset); |
| |
| void qemu_ram_munmap(int fd, void *ptr, size_t size); |
| |
| #endif |