73 static int check_file_status(struct pt_section *section, int fd)  in check_file_status()  argument
79 	if (!section)  in check_file_status()
86 	status = section->status;  in check_file_status()
99 int pt_sec_posix_map(struct pt_section *section, int fd)  in pt_sec_posix_map()  argument
107 	if (!section)  in pt_sec_posix_map()
110 	offset = section->offset;  in pt_sec_posix_map()
111 	size = section->size;  in pt_sec_posix_map()
122 	/* The section is supposed to fit into the file so we shouldn't  in pt_sec_posix_map()
125 	if (size < section->size)  in pt_sec_posix_map()
150 	section->mapping = mapping;  in pt_sec_posix_map()
151 	section->unmap = pt_sec_posix_unmap;  in pt_sec_posix_map()
152 	section->read = pt_sec_posix_read;  in pt_sec_posix_map()
153 	section->memsize = pt_sec_posix_memsize;  in pt_sec_posix_map()
162 static int pt_sec_posix_map_success(struct pt_section *section)  in pt_sec_posix_map_success()  argument
167 	if (!section)  in pt_sec_posix_map_success()
170 	mcount = section->mcount + 1;  in pt_sec_posix_map_success()
172 		(void) pt_section_unlock(section);  in pt_sec_posix_map_success()
176 	section->mcount = mcount;  in pt_sec_posix_map_success()
178 	errcode = pt_section_unlock(section);  in pt_sec_posix_map_success()
182 	status = pt_section_on_map(section);  in pt_sec_posix_map_success()
184 		/* We had to release the section lock for pt_section_on_map() so  in pt_sec_posix_map_success()
185 		 * @section may have meanwhile been mapped by other threads.  in pt_sec_posix_map_success()
191 		(void) pt_section_unmap(section);  in pt_sec_posix_map_success()
198 int pt_section_map(struct pt_section *section)  in pt_section_map()  argument
204 	if (!section)  in pt_section_map()
207 	errcode = pt_section_lock(section);  in pt_section_map()
211 	if (section->mcount)  in pt_section_map()
212 		return pt_sec_posix_map_success(section);  in pt_section_map()
214 	if (section->mapping)  in pt_section_map()
217 	filename = section->filename;  in pt_section_map()
226 	errcode = check_file_status(section, fd);  in pt_section_map()
230 	/* We close the file on success.  This does not unmap the section. */  in pt_section_map()
231 	errcode = pt_sec_posix_map(section, fd);  in pt_section_map()
235 		return pt_sec_posix_map_success(section);  in pt_section_map()
248 	 * the section is unmapped.  in pt_section_map()
250 	errcode = pt_sec_file_map(section, file);  in pt_section_map()
252 		return pt_sec_posix_map_success(section);  in pt_section_map()
261 	(void) pt_section_unlock(section);  in pt_section_map()
265 int pt_sec_posix_unmap(struct pt_section *section)  in pt_sec_posix_unmap()  argument
269 	if (!section)  in pt_sec_posix_unmap()
272 	mapping = section->mapping;  in pt_sec_posix_unmap()
273 	if (!mapping || !section->unmap || !section->read || !section->memsize)  in pt_sec_posix_unmap()
276 	section->mapping = NULL;  in pt_sec_posix_unmap()
277 	section->unmap = NULL;  in pt_sec_posix_unmap()
278 	section->read = NULL;  in pt_sec_posix_unmap()
279 	section->memsize = NULL;  in pt_sec_posix_unmap()
287 int pt_sec_posix_read(const struct pt_section *section, uint8_t *buffer,  in pt_sec_posix_read()  argument
293 	if (!buffer || !section)  in pt_sec_posix_read()
296 	mapping = section->mapping;  in pt_sec_posix_read()
301 	 * lies within the section's boundaries.  in pt_sec_posix_read()
303 	 * And we checked that the entire section was mapped.  There's no need  in pt_sec_posix_read()
312 int pt_sec_posix_memsize(const struct pt_section *section, uint64_t *size)  in pt_sec_posix_memsize()  argument
317 	if (!section || !size)  in pt_sec_posix_memsize()
320 	mapping = section->mapping;  in pt_sec_posix_memsize()