/* * Copyright 2016 Red Hat Inc. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR * OTHER DEALINGS IN THE SOFTWARE. * * Authors: Ben Skeggs */ #include static int request_firmware_(const struct firmware **pfw, const char *prefix, const char *name, struct device *dev) { struct firmware *fw = *(void **)pfw = malloc(sizeof(*fw)); char *path; int fd; if (!(path = malloc(strlen(prefix) + strlen(name) + 1))) return -ENOMEM; sprintf(path, "%s%s", prefix, name); fd = open(path, O_RDONLY); free(path); if (fd >= 0) { off_t len = lseek(fd, 0, SEEK_END); fw->data = malloc(len); fw->size = pread(fd, fw->data, len, 0); return 0; } free(fw); return -EINVAL; } int request_firmware(const struct firmware **pfw, const char *name, struct device *dev) { if (!request_firmware_(pfw, "/lib/firmware/", name, dev)) return 0; if (!request_firmware_(pfw, "", name, dev)) return 0; return -EINVAL; } void release_firmware(const struct firmware *fw) { free(fw->data); free((void *)fw); }