2  * Copyright (c) 2013-2019, Intel Corporation
22  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
32 #include "intel-pt.h"
38 static int fmap_init(struct pt_sec_file_mapping *mapping)  in fmap_init()  argument
40 	if (!mapping)  in fmap_init()
41 		return -pte_internal;  in fmap_init()
43 	memset(mapping, 0, sizeof(*mapping));  in fmap_init()
49 		errcode = mtx_init(&mapping->lock, mtx_plain);  in fmap_init()
51 			return -pte_bad_lock;  in fmap_init()
58 static void fmap_fini(struct pt_sec_file_mapping *mapping)  in fmap_fini()  argument
60 	if (!mapping)  in fmap_fini()
63 	fclose(mapping->file);  in fmap_fini()
67 	mtx_destroy(&mapping->lock);  in fmap_fini()
72 static int fmap_lock(struct pt_sec_file_mapping *mapping)  in fmap_lock()  argument
74 	if (!mapping)  in fmap_lock()
75 		return -pte_internal;  in fmap_lock()
81 		errcode = mtx_lock(&mapping->lock);  in fmap_lock()
83 			return -pte_bad_lock;  in fmap_lock()
90 static int fmap_unlock(struct pt_sec_file_mapping *mapping)  in fmap_unlock()  argument
92 	if (!mapping)  in fmap_unlock()
93 		return -pte_internal;  in fmap_unlock()
99 		errcode = mtx_unlock(&mapping->lock);  in fmap_unlock()
101 			return -pte_bad_lock;  in fmap_unlock()
110 	struct pt_sec_file_mapping *mapping;  in pt_sec_file_map()  local
116 		return -pte_internal;  in pt_sec_file_map()
118 	mapping = section->mapping;  in pt_sec_file_map()
119 	if (mapping)  in pt_sec_file_map()
120 		return -pte_internal;  in pt_sec_file_map()
122 	offset = section->offset;  in pt_sec_file_map()
123 	size = section->size;  in pt_sec_file_map()
130 		return -pte_bad_image;  in pt_sec_file_map()
133 		return -pte_bad_image;  in pt_sec_file_map()
136 		return -pte_bad_image;  in pt_sec_file_map()
141 		return -pte_bad_image;  in pt_sec_file_map()
145 		return -pte_bad_image;  in pt_sec_file_map()
148 		return -pte_bad_image;  in pt_sec_file_map()
150 	mapping = malloc(sizeof(*mapping));  in pt_sec_file_map()
151 	if (!mapping)  in pt_sec_file_map()
152 		return -pte_nomem;  in pt_sec_file_map()
154 	errcode = fmap_init(mapping);  in pt_sec_file_map()
158 	mapping->file = file;  in pt_sec_file_map()
159 	mapping->begin = begin;  in pt_sec_file_map()
160 	mapping->end = end;  in pt_sec_file_map()
162 	section->mapping = mapping;  in pt_sec_file_map()
163 	section->unmap = pt_sec_file_unmap;  in pt_sec_file_map()
164 	section->read = pt_sec_file_read;  in pt_sec_file_map()
165 	section->memsize = pt_sec_file_memsize;  in pt_sec_file_map()
170 	free(mapping);  in pt_sec_file_map()
176 	struct pt_sec_file_mapping *mapping;  in pt_sec_file_unmap()  local
179 		return -pte_internal;  in pt_sec_file_unmap()
181 	mapping = section->mapping;  in pt_sec_file_unmap()
183 	if (!mapping || !section->unmap || !section->read || !section->memsize)  in pt_sec_file_unmap()
184 		return -pte_internal;  in pt_sec_file_unmap()
186 	section->mapping = NULL;  in pt_sec_file_unmap()
187 	section->unmap = NULL;  in pt_sec_file_unmap()
188 	section->read = NULL;  in pt_sec_file_unmap()
189 	section->memsize = NULL;  in pt_sec_file_unmap()
191 	fmap_fini(mapping);  in pt_sec_file_unmap()
192 	free(mapping);  in pt_sec_file_unmap()
200 	struct pt_sec_file_mapping *mapping;  in pt_sec_file_read()  local
207 		return -pte_internal;  in pt_sec_file_read()
209 	mapping = section->mapping;  in pt_sec_file_read()
210 	if (!mapping)  in pt_sec_file_read()
211 		return -pte_internal;  in pt_sec_file_read()
213 	file = mapping->file;  in pt_sec_file_read()
221 	begin = mapping->begin + (long) offset;  in pt_sec_file_read()
223 	errcode = fmap_lock(mapping);  in pt_sec_file_read()
233 	errcode = fmap_unlock(mapping);  in pt_sec_file_read()
240 	(void) fmap_unlock(mapping);  in pt_sec_file_read()
241 	return -pte_nomap;  in pt_sec_file_read()
247 		return -pte_internal;  in pt_sec_file_memsize()
249 	if (!section->mapping)  in pt_sec_file_memsize()
250 		return -pte_internal;  in pt_sec_file_memsize()