1 /*-
2  * SPDX-License-Identifier: BSD-3-Clause
4  * Copyright (c) 1993 Jan-Simon Pendry
9  * Jan-Simon Pendry.
56 #include <vm/vm.h>
57 #include <vm/vm_extern.h>
58 #include <vm/pmap.h>
59 #include <vm/vm_map.h>
60 #include <vm/vm_page.h>
61 #include <vm/vm_object.h>
66  * The map entries can *almost* be read with programs like cat.  However,
78 	struct vmspace *vm;  in procfs_doprocmap()  local
79 	vm_map_t map;  in procfs_doprocmap()  local
102 	if (uio->uio_rw != UIO_READ)  in procfs_doprocmap()
114 	vm = vmspace_acquire_ref(p);  in procfs_doprocmap()
115 	if (vm == NULL)  in procfs_doprocmap()
117 	map = &vm->vm_map;  in procfs_doprocmap()
118 	vm_map_lock_read(map);  in procfs_doprocmap()
119 	VM_MAP_ENTRY_FOREACH(entry, map) {  in procfs_doprocmap()
120 		if (entry->eflags & MAP_ENTRY_IS_SUB_MAP)  in procfs_doprocmap()
123 		e_eflags = entry->eflags;  in procfs_doprocmap()
124 		e_prot = entry->protection;  in procfs_doprocmap()
125 		e_start = entry->start;  in procfs_doprocmap()
126 		e_end = entry->end;  in procfs_doprocmap()
129 		obj = entry->object.vm_object;  in procfs_doprocmap()
132 			if (obj->shadow_count == 1)  in procfs_doprocmap()
133 				privateresident = obj->resident_page_count;  in procfs_doprocmap()
135 		cred = (entry->cred) ? entry->cred : (obj ? obj->cred : NULL);  in procfs_doprocmap()
138 		    tobj = tobj->backing_object) {  in procfs_doprocmap()
144 			kern_proc_vmmap_resident(map, entry, &resident, &super);  in procfs_doprocmap()
146 			nobj = tobj->backing_object;  in procfs_doprocmap()
150 		last_timestamp = map->timestamp;  in procfs_doprocmap()
151 		vm_map_unlock_read(map);  in procfs_doprocmap()
154 		fullpath = "-";  in procfs_doprocmap()
184 			flags = obj->flags;  in procfs_doprocmap()
185 			ref_count = obj->ref_count;  in procfs_doprocmap()
186 			shadow_count = obj->shadow_count;  in procfs_doprocmap()
201 		 *  start, end, resident, private-resident, obj, access,  in procfs_doprocmap()
214 			(e_prot & VM_PROT_READ)?"r":"-",  in procfs_doprocmap()
215 			(e_prot & VM_PROT_WRITE)?"w":"-",  in procfs_doprocmap()
216 			(e_prot & VM_PROT_EXECUTE)?"x":"-",  in procfs_doprocmap()
221 			cred ? "CH":"NCH", cred ? cred->cr_ruid : -1);  in procfs_doprocmap()
225 		vm_map_lock_read(map);  in procfs_doprocmap()
226 		if (error == -1) {  in procfs_doprocmap()
230 		if (last_timestamp != map->timestamp) {  in procfs_doprocmap()
232 			 * Look again for the entry because the map was  in procfs_doprocmap()
236 			vm_map_lookup_entry(map, e_end - 1, &tmp_entry);  in procfs_doprocmap()
240 	vm_map_unlock_read(map);  in procfs_doprocmap()
241 	vmspace_free(vm);  in procfs_doprocmap()