43 	int (*load)(struct kmod_file *file);
44 	void (*unload)(struct kmod_file *file);
64 static void xz_uncompress_belch(struct kmod_file *file, lzma_ret ret)  in xz_uncompress_belch()  argument
68 		ERR(file->ctx, "xz: %s\n", strerror(ENOMEM));  in xz_uncompress_belch()
71 		ERR(file->ctx, "xz: File format not recognized\n");  in xz_uncompress_belch()
74 		ERR(file->ctx, "xz: Unsupported compression options\n");  in xz_uncompress_belch()
77 		ERR(file->ctx, "xz: File is corrupt\n");  in xz_uncompress_belch()
80 		ERR(file->ctx, "xz: Unexpected end of input\n");  in xz_uncompress_belch()
83 		ERR(file->ctx, "xz: Internal error (bug)\n");  in xz_uncompress_belch()
88 static int xz_uncompress(lzma_stream *strm, struct kmod_file *file)  in xz_uncompress()  argument
102 			ssize_t rdret = read(file->fd, in_buf, sizeof(in_buf));  in xz_uncompress()
129 			xz_uncompress_belch(file, ret);  in xz_uncompress()
134 	file->xz_used = true;  in xz_uncompress()
135 	file->memory = p;  in xz_uncompress()
136 	file->size = total;  in xz_uncompress()
143 static int load_xz(struct kmod_file *file)  in load_xz()  argument
151 		ERR(file->ctx, "xz: %s\n", strerror(ENOMEM));  in load_xz()
154 		ERR(file->ctx, "xz: Internal error (bug)\n");  in load_xz()
157 	ret = xz_uncompress(&strm, file);  in load_xz()
162 static void unload_xz(struct kmod_file *file)  in unload_xz()  argument
164 	if (!file->xz_used)  in unload_xz()
166 	free(file->memory);  in unload_xz()
174 static int load_zlib(struct kmod_file *file)  in load_zlib()  argument
181 	file->gzf = gzdopen(file->fd, "rb");  in load_zlib()
182 	if (file->gzf == NULL)  in load_zlib()
184 	file->fd = -1; /* now owned by gzf due gzdopen() */  in load_zlib()
199 		r = gzread(file->gzf, p + did, total - did);  in load_zlib()
204 			const char *gz_errmsg = gzerror(file->gzf, &gzerr);  in load_zlib()
206 			ERR(file->ctx, "gzip: %s\n", gz_errmsg);  in load_zlib()
215 	file->memory = p;  in load_zlib()
216 	file->size = did;  in load_zlib()
221 	gzclose(file->gzf);  in load_zlib()
225 static void unload_zlib(struct kmod_file *file)  in unload_zlib()  argument
227 	if (file->gzf == NULL)  in unload_zlib()
229 	free(file->memory);  in unload_zlib()
230 	gzclose(file->gzf); /* closes file->fd */  in unload_zlib()
250 static int load_reg(struct kmod_file *file)  in load_reg()  argument
254 	if (fstat(file->fd, &st) < 0)  in load_reg()
257 	file->size = st.st_size;  in load_reg()
258 	file->memory = mmap(NULL, file->size, PROT_READ, MAP_PRIVATE,  in load_reg()
259 			    file->fd, 0);  in load_reg()
260 	if (file->memory == MAP_FAILED)  in load_reg()
262 	file->direct = true;  in load_reg()
266 static void unload_reg(struct kmod_file *file)  in unload_reg()  argument
268 	munmap(file->memory, file->size);  in unload_reg()
275 struct kmod_elf *kmod_file_get_elf(struct kmod_file *file)  in kmod_file_get_elf()  argument
277 	if (file->elf)  in kmod_file_get_elf()
278 		return file->elf;  in kmod_file_get_elf()
280 	file->elf = kmod_elf_new(file->memory, file->size);  in kmod_file_get_elf()
281 	return file->elf;  in kmod_file_get_elf()
287 	struct kmod_file *file = calloc(1, sizeof(struct kmod_file));  in kmod_file_open()  local
292 	if (file == NULL)  in kmod_file_open()
295 	file->fd = open(filename, O_RDONLY|O_CLOEXEC);  in kmod_file_open()
296 	if (file->fd < 0) {  in kmod_file_open()
306 	file->direct = false;  in kmod_file_open()
315 		sz = read_str_safe(file->fd, buf, magic_size_max + 1);  in kmod_file_open()
316 		lseek(file->fd, 0, SEEK_SET);  in kmod_file_open()
330 			file->ops = &itr->ops;  in kmod_file_open()
333 	if (file->ops == NULL)  in kmod_file_open()
334 		file->ops = &reg_ops;  in kmod_file_open()
336 	err = file->ops->load(file);  in kmod_file_open()
337 	file->ctx = ctx;  in kmod_file_open()
340 		if (file->fd >= 0)  in kmod_file_open()
341 			close(file->fd);  in kmod_file_open()
342 		free(file);  in kmod_file_open()
347 	return file;  in kmod_file_open()
350 void *kmod_file_get_contents(const struct kmod_file *file)  in kmod_file_get_contents()  argument
352 	return file->memory;  in kmod_file_get_contents()
355 off_t kmod_file_get_size(const struct kmod_file *file)  in kmod_file_get_size()  argument
357 	return file->size;  in kmod_file_get_size()
360 bool kmod_file_get_direct(const struct kmod_file *file)  in kmod_file_get_direct()  argument
362 	return file->direct;  in kmod_file_get_direct()
365 int kmod_file_get_fd(const struct kmod_file *file)  in kmod_file_get_fd()  argument
367 	return file->fd;  in kmod_file_get_fd()
370 void kmod_file_unref(struct kmod_file *file)  in kmod_file_unref()  argument
372 	if (file->elf)  in kmod_file_unref()
373 		kmod_elf_unref(file->elf);  in kmod_file_unref()
375 	file->ops->unload(file);  in kmod_file_unref()
376 	if (file->fd >= 0)  in kmod_file_unref()
377 		close(file->fd);  in kmod_file_unref()
378 	free(file);  in kmod_file_unref()