diff options
Diffstat (limited to 'contrib/syslinux/latest/libfat/cache.c')
-rw-r--r-- | contrib/syslinux/latest/libfat/cache.c | 65 |
1 files changed, 0 insertions, 65 deletions
diff --git a/contrib/syslinux/latest/libfat/cache.c b/contrib/syslinux/latest/libfat/cache.c deleted file mode 100644 index 85b7ead..0000000 --- a/contrib/syslinux/latest/libfat/cache.c +++ /dev/null @@ -1,65 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2004-2008 H. Peter Anvin - All Rights Reserved - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation, Inc., 53 Temple Place Ste 330, - * Boston MA 02111-1307, USA; either version 2 of the License, or - * (at your option) any later version; incorporated herein by reference. - * - * ----------------------------------------------------------------------- */ - -/* - * cache.c - * - * Simple sector cache - */ - -#include <stdlib.h> -#include "libfatint.h" - -void *libfat_get_sector(struct libfat_filesystem *fs, libfat_sector_t n) -{ - struct libfat_sector *ls; - - for (ls = fs->sectors; ls; ls = ls->next) { - if (ls->n == n) - return ls->data; /* Found in cache */ - } - - /* Not found in cache */ - ls = malloc(sizeof(struct libfat_sector)); - if (!ls) { - libfat_flush(fs); - ls = malloc(sizeof(struct libfat_sector)); - - if (!ls) - return NULL; /* Can't allocate memory */ - } - - if (fs->read(fs->readptr, ls->data, LIBFAT_SECTOR_SIZE, n) - != LIBFAT_SECTOR_SIZE) { - free(ls); - return NULL; /* I/O error */ - } - - ls->n = n; - ls->next = fs->sectors; - fs->sectors = ls; - - return ls->data; -} - -void libfat_flush(struct libfat_filesystem *fs) -{ - struct libfat_sector *ls, *lsnext; - - lsnext = fs->sectors; - fs->sectors = NULL; - - for (ls = lsnext; ls; ls = lsnext) { - lsnext = ls->next; - free(ls); - } -} |