[mirror_qemu.git] / include / qemu / mmap-alloc.h

#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 the specified file or device.
 *
 * 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.
 *  @shared: map has RAM_SHARED flag.
 *  @is_pmem: map has RAM_PMEM flag.
 *
 * 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,
                    bool shared,
                    bool is_pmem);

void qemu_ram_munmap(int fd, void *ptr, size_t size);

#endif
Commit	Line	Data
2a6a4076 MA	1	#ifndef QEMU_MMAP_ALLOC_H
2a6a4076 MA	2	#define QEMU_MMAP_ALLOC_H
794e8f30	3
794e8f30	4
7197fb40 MT	5	size_t qemu_fd_getpagesize(int fd);
7197fb40 MT	6
9c607668 AK	7	size_t qemu_mempath_getpagesize(const char *mem_path);
9c607668 AK	8
2ac0f162 ZY	9	/**
	10	* qemu_ram_mmap: mmap the specified file or device.
	11	*
	12	* Parameters:
	13	* @fd: the file or the device to mmap
	14	* @size: the number of bytes to be mmaped
	15	* @align: if not zero, specify the alignment of the starting mapping address;
	16	* otherwise, the alignment in use will be determined by QEMU.
	17	* @shared: map has RAM_SHARED flag.
	18	* @is_pmem: map has RAM_PMEM flag.
	19	*
	20	* Return:
	21	* On success, return a pointer to the mapped area.
	22	* On failure, return MAP_FAILED.
	23	*/
	24	void *qemu_ram_mmap(int fd,
	25	size_t size,
	26	size_t align,
	27	bool shared,
	28	bool is_pmem);
794e8f30	29
53adb9d4	30	void qemu_ram_munmap(int fd, void *ptr, size_t size);
794e8f30 MT	31
794e8f30 MT	32	#endif