| /* ----------------------------------------------------------------------- * |
| * |
| * 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 <errno.h> |
| #include <com32.h> |
| #include <string.h> |
| #include <unistd.h> |
| #include <fcntl.h> |
| #include <fs.h> |
| #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); |
| |
| //printf("enter, file = %s, fd = %d\n", pathname, fd); |
| |
| if (fd < 0) |
| return -1; |
| |
| fp = &__file_info[fd]; |
| |
| handle = open_file(pathname, flags, &fp->i.fd); |
| if (handle < 0) { |
| close(fd); |
| errno = ENOENT; |
| return -1; |
| } |
| |
| fp->i.offset = 0; |
| fp->i.nbytes = 0; |
| |
| return fd; |
| } |