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