sys/linux/pagemap_ioctl.txt

# Copyright 2023 syzkaller project authors. All rights reserved.
# Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file.

include <uapi/linux/fs.h>

resource fd_pagemap[fd]

syz_open_procfs$pagemap(pid pid, file ptr[in, string["pagemap"]]) fd_pagemap

ioctl$PAGEMAP_SCAN(fd fd_pagemap, cmd const[PAGEMAP_SCAN], arg ptr[inout, pagemap_arg])

page_region {
	start		int64
	end		int64
	categories	int64
}

pagemap_arg {
	size			bytesize[pagemap_arg, int64]
	flags			flags[pm_flags, int64]
	start			vma64
	end			vma64
	walk_end		int64
	vec			ptr64[in, array[page_region]]
	vec_len			len[vec, int64]
	max_pages		int64
	category_inverted	flags[categories, int64]
	category_mask		flags[categories, int64]
	category_anyof_mask	flags[categories, int64]
	return_mask		flags[categories, int64]
}

pm_flags = PM_SCAN_WP_MATCHING, PM_SCAN_CHECK_WPASYNC
categories = PAGE_IS_WPALLOWED, PAGE_IS_WRITTEN, PAGE_IS_FILE, PAGE_IS_PRESENT, PAGE_IS_SWAPPED, PAGE_IS_PFNZERO, PAGE_IS_HUGE