This is libstand; a support library for standalone executables (eg. bootstrap

modules).
Obtained from: NetBSD, with some architectural changes and many additions.

1 files changed, 120 insertions, 0 deletions

diff --git a/lib/libstand/dosfs.h b/lib/libstand/dosfs.h
new file mode 100644
index 0000000..e44b6b5
--- /dev/null
+++ b/lib/libstand/dosfs.h
@@ -0,0 +1,120 @@
+/*
+ * Copyright (c) 1996, 1998 Robert Nordier
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS
+ * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
+ * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
+ * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef DOSIO_H
+#define DOSIO_H
+
+/*
+ * DOS file attributes
+ */
+
+#define FA_RDONLY  001          /* read-only */
+#define FA_HIDDEN  002          /* hidden file */
+#define FA_SYSTEM  004          /* system file */
+#define FA_LABEL   010          /* volume label */
+#define FA_DIR     020          /* directory */
+#define FA_ARCH    040          /* archive (file modified) */
+#define FA_XDE     017          /* extended directory entry */
+#define FA_MASK    077          /* all attributes */
+
+/*
+ * Macros to convert DOS-format 16-bit and 32-bit quantities
+ */
+
+#define cv2(p)  ((u_int16_t)(p)[0] |         \
+                ((u_int16_t)(p)[1] << 010))
+#define cv4(p)  ((u_int32_t)(p)[0] |          \
+                ((u_int32_t)(p)[1] << 010) |  \
+                ((u_int32_t)(p)[2] << 020) |  \
+                ((u_int32_t)(p)[3] << 030))
+
+/*
+ * Directory, filesystem, and file structures.
+ */
+
+typedef struct {
+    u_char x_case;              /* case */
+    u_char c_hsec;              /* created: secs/100 */
+    u_char c_time[2];           /* created: time */
+    u_char c_date[2];           /* created: date */
+    u_char a_date[2];           /* accessed: date */
+    u_char h_clus[2];           /* clus[hi] */
+} DOS_DEX;
+
+typedef struct {
+    u_char name[8];             /* name */
+    u_char ext[3];              /* extension */
+    u_char attr;                /* attributes */
+    DOS_DEX dex;                /* VFAT/FAT32 only */
+    u_char time[2];             /* modified: time */
+    u_char date[2];             /* modified: date */
+    u_char clus[2];             /* starting cluster */
+    u_char size[4];             /* size */
+} DOS_DE;
+
+typedef struct {
+    u_char seq;                 /* flags */
+    u_char name1[5][2];         /* 1st name area */
+    u_char attr;                /* (see fat_de) */
+    u_char res;                 /* reserved */
+    u_char chk;                 /* checksum */
+    u_char name2[6][2];         /* 2nd name area */
+    u_char clus[2];             /* (see fat_de) */
+    u_char name3[2][2];         /* 3rd name area */
+} DOS_XDE;
+
+typedef union {
+    DOS_DE de;                  /* standard directory entry */
+    DOS_XDE xde;                /* extended directory entry */
+} DOS_DIR;
+
+typedef struct {
+    struct open_file *fd;       /* file descriptor */
+    u_char *buf;                /* buffer */
+    u_int bufsec;               /* buffered sector */
+    u_int links;                /* active links to structure */
+    u_int spc;                  /* sectors per cluster */
+    u_int bsize;                /* cluster size in bytes */
+    u_int bshift;               /* cluster conversion shift */
+    u_int dirents;              /* root directory entries */
+    u_int spf;                  /* sectors per fat */
+    u_int rdcl;                 /* root directory start cluster */
+    u_int lsnfat;               /* start of fat */
+    u_int lsndir;               /* start of root dir */
+    u_int lsndta;               /* start of data area */
+    u_int fatsz;                /* FAT entry size */
+    u_int xclus;                /* maximum cluster number */
+} DOS_FS;
+
+typedef struct {
+    DOS_FS *fs;                 /* associated filesystem */
+    DOS_DE de;                  /* directory entry */
+    u_int offset;               /* current offset */
+    u_int c;                    /* last cluster read */
+} DOS_FILE;
+
+#endif  /* !DOSIO_H */