| /* |
| * This file is subject to the terms and conditions of the GNU General Public |
| * License. See the file "COPYING" in the main directory of this archive |
| * for more details. |
| * |
| * Copyright (C) Hewlett-Packard (Paul Bame) paul_bame@hp.com |
| */ |
| #include "bootloader.h" |
| |
| struct fileio |
| { |
| describe_t describef; |
| read_t readf; |
| }; |
| |
| static struct fileio *fileio = 0; |
| |
| /* return first available file descriptor or -1 if none |
| * could probably die instead of bothering with -1... |
| */ |
| int fileio_open(describe_t describef, read_t readf) |
| { |
| int d = -1; |
| int i; |
| |
| if (fileio == 0) |
| { |
| unsigned sz = sizeof fileio[0] * MAX_FD; |
| fileio = (struct fileio *)malloc(sz); |
| memset(fileio, 0, sz); |
| } |
| |
| for (i = 0; i < MAX_FD; i++) |
| { |
| if (fileio[i].describef == 0) |
| { |
| d = i; |
| fileio[i].describef = describef; |
| fileio[i].readf = readf; |
| break; |
| } |
| } |
| |
| return d; |
| } |
| |
| int seekread(int fd, char *buf, unsigned nbytes, unsigned devaddr) |
| { |
| int r = -1; |
| |
| if (0) printf("seekread(%d, 0x%p, %d, %d)\r\n", fd, buf, nbytes, devaddr); |
| if (fileio[fd].readf != 0) |
| r = (*fileio[fd].readf)(fd, buf, nbytes, devaddr); |
| |
| if (0) printf("seekread(%d) returning %d\r\n", fd, r); |
| return r; |
| } |
| |
| void describe(int fd, int *bufalign, int *blocksize) |
| { |
| (*fileio[fd].describef)(fd, bufalign, blocksize); |
| } |
| /* $Id: fileio.c,v 1.1.2.1 2000/06/05 03:58:48 bame Exp $ */ |