linux-stable/include/linux/decompress/unzstd.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef LINUX_DECOMPRESS_UNZSTD_H
#define LINUX_DECOMPRESS_UNZSTD_H

int unzstd(unsigned char *inbuf, long len,
	   long (*fill)(void*, unsigned long),
	   long (*flush)(void*, unsigned long),
	   unsigned char *output,
	   long *pos,
	   void (*error_fn)(char *x));
#endif
lib: Add zstd support to decompress - Add unzstd() and the zstd decompress interface. - Add zstd support to decompress_method(). The decompress_method() and unzstd() functions are used to decompress the initramfs and the initrd. The __decompress() function is used in the preboot environment to decompress a zstd compressed kernel. The zstd decompression function allows the input and output buffers to overlap because that is used by x86 kernel decompression. Signed-off-by: Nick Terrell <terrelln@fb.com> Signed-off-by: Ingo Molnar <mingo@kernel.org> Tested-by: Sedat Dilek <sedat.dilek@gmail.com> Reviewed-by: Kees Cook <keescook@chromium.org> Link: https://lore.kernel.org/r/20200730190841.2071656-3-nickrterrell@gmail.com 2020-07-30 19:08:35 +00:00			`/* SPDX-License-Identifier: GPL-2.0 */`
			`#ifndef LINUX_DECOMPRESS_UNZSTD_H`
			`#define LINUX_DECOMPRESS_UNZSTD_H`

			`int unzstd(unsigned char *inbuf, long len,`
			`long (fill)(void, unsigned long),`
			`long (flush)(void, unsigned long),`
			`unsigned char *output,`
			`long *pos,`
			`void (error_fn)(char x));`
			`#endif`