/* ----------------------------------------------------------------------- * * * Copyright 2003-2008 H. Peter Anvin - All Rights Reserved * * 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 AUTHORS OR COPYRIGHT * HOLDERS 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. * * ----------------------------------------------------------------------- */ #include #include #include #include #include #include "file.h" /* * open.c * * Open an ordinary file */ extern ssize_t __file_read(struct file_info *, void *, size_t); extern int __file_close(struct file_info *); const struct input_dev __file_dev = { .dev_magic = __DEV_MAGIC, .flags = __DEV_FILE | __DEV_INPUT, .fileflags = O_RDONLY, .read = __file_read, .close = __file_close, .open = NULL, }; int open(const char *pathname, int flags, ...) { int fd, handle; struct file_info *fp; fd = opendev(&__file_dev, NULL, flags); if (fd < 0) return -1; fp = &__file_info[fd]; handle = __com32.cs_pm->open_file(pathname, &fp->i.fd); if (handle < 0) { close(fd); errno = ENOENT; return -1; } fp->i.offset = 0; fp->i.nbytes = 0; return fd; }