Git conversion: Make reactos the root directory, move rosapps, rostests, wallpapers...

[reactos.git] / boot / freeldr / freeldr / arcname.c

diff --git a/boot/freeldr/freeldr/arcname.c b/boot/freeldr/freeldr/arcname.c
new file mode 100644 (file)
index 0000000..8e8cf1e
--- /dev/null
+++ b/boot/freeldr/freeldr/arcname.c
@@ -0,0 +1,224 @@
+/*
+ *  FreeLoader - arcname.c
+ *
+ *  Copyright (C) 2001  Brian Palmer  <brianp@sginet.com>
+ *  Copyright (C) 2001  Eric Kohl
+ *
+ *  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; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, write to the Free Software Foundation, Inc.,
+ *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include <freeldr.h>
+
+BOOLEAN DissectArcPath(CHAR *ArcPath, CHAR *BootPath, UCHAR* BootDrive, ULONG* BootPartition)
+{
+    char *p;
+
+    /* Detect ramdisk path */
+    if (_strnicmp(ArcPath, "ramdisk(0)", 10) == 0)
+    {
+        /* Magic value for ramdisks */
+        *BootDrive = 0x49;
+        *BootPartition = 1;
+
+        /* Get the path */
+        p = ArcPath + 11;
+        strcpy(BootPath, p);
+        return TRUE;
+    }
+
+    if (_strnicmp(ArcPath, "multi(0)disk(0)", 15) != 0)
+        return FALSE;
+
+    p = ArcPath + 15;
+    if (_strnicmp(p, "fdisk(", 6) == 0)
+    {
+        /*
+         * Floppy disk path:
+         *  multi(0)disk(0)fdisk(x)\path
+         */
+        p = p + 6;
+        *BootDrive = atoi(p);
+        p = strchr(p, ')');
+        if (p == NULL)
+            return FALSE;
+        p++;
+        *BootPartition = 0;
+    }
+    else if (_strnicmp(p, "cdrom(", 6) == 0)
+    {
+        /*
+         * Cdrom path:
+         *  multi(0)disk(0)cdrom(x)\path
+         */
+        p = p + 6;
+        *BootDrive = atoi(p) + 0x80;
+        p = strchr(p, ')');
+        if (p == NULL)
+            return FALSE;
+        p++;
+        *BootPartition = 0xff;
+    }
+    else if (_strnicmp(p, "rdisk(", 6) == 0)
+    {
+        /*
+         * Hard disk path:
+         *  multi(0)disk(0)rdisk(x)partition(y)\path
+         */
+        p = p + 6;
+        *BootDrive = atoi(p) + 0x80;
+        p = strchr(p, ')');
+        if ((p == NULL) || (_strnicmp(p, ")partition(", 11) != 0))
+            return FALSE;
+        p = p + 11;
+        *BootPartition = atoi(p);
+        p = strchr(p, ')');
+        if (p == NULL)
+            return FALSE;
+        p++;
+    }
+    else
+    {
+        return FALSE;
+    }
+
+    strcpy(BootPath, p);
+
+    return TRUE;
+}
+
+/* PathSyntax: scsi() = 0, multi() = 1, ramdisk() = 2 */
+BOOLEAN
+DissectArcPath2(
+    IN CHAR* ArcPath,
+    OUT ULONG* x,
+    OUT ULONG* y,
+    OUT ULONG* z,
+    OUT ULONG* Partition,
+    OUT ULONG *PathSyntax)
+{
+    /* Detect ramdisk() */
+    if (_strnicmp(ArcPath, "ramdisk(0)", 10) == 0)
+    {
+        *x = *y = *z = 0;
+        *Partition = 1;
+        *PathSyntax = 2;
+        return TRUE;
+    }
+    /* Detect scsi()disk()rdisk()partition() */
+    else if (sscanf(ArcPath, "scsi(%lu)disk(%lu)rdisk(%lu)partition(%lu)", x, y, z, Partition) == 4)
+    {
+        *PathSyntax = 0;
+        return TRUE;
+    }
+    /* Detect scsi()cdrom()fdisk() */
+    else if (sscanf(ArcPath, "scsi(%lu)cdrom(%lu)fdisk(%lu)", x, y, z) == 3)
+    {
+        *Partition = 0;
+        *PathSyntax = 0;
+        return TRUE;
+    }
+    /* Detect multi()disk()rdisk()partition() */
+    else if (sscanf(ArcPath, "multi(%lu)disk(%lu)rdisk(%lu)partition(%lu)", x, y, z, Partition) == 4)
+    {
+        *PathSyntax = 1;
+        return TRUE;
+    }
+    /* Detect multi()disk()cdrom() */
+    else if (sscanf(ArcPath, "multi(%lu)disk(%lu)cdrom(%lu)", x, y, z) == 3)
+    {
+        *Partition = 1;
+        *PathSyntax = 1;
+        return TRUE;
+    }
+    /* Detect multi()disk()fdisk() */
+    else if (sscanf(ArcPath, "multi(%lu)disk(%lu)fdisk(%lu)", x, y, z) == 3)
+    {
+        *Partition = 1;
+        *PathSyntax = 1;
+        return TRUE;
+    }
+
+    /* Unknown syntax */
+    return FALSE;
+}
+
+VOID ConstructArcPath(PCHAR ArcPath, PCHAR SystemFolder, UCHAR Disk, ULONG Partition)
+{
+    char    tmp[50];
+
+    strcpy(ArcPath, "multi(0)disk(0)");
+
+    if (Disk < 0x80)
+    {
+        /*
+         * Floppy disk path:
+         *  multi(0)disk(0)fdisk(x)\path
+         */
+        sprintf(tmp, "fdisk(%d)", (int) Disk);
+        strcat(ArcPath, tmp);
+    }
+    else
+    {
+        /*
+         * Hard disk path:
+         *  multi(0)disk(0)rdisk(x)partition(y)\path
+         */
+        sprintf(tmp, "rdisk(%d)partition(%d)", (int) (Disk - 0x80), (int) Partition);
+        strcat(ArcPath, tmp);
+    }
+
+    if (SystemFolder[0] == '\\' || SystemFolder[0] == '/')
+    {
+        strcat(ArcPath, SystemFolder);
+    }
+    else
+    {
+        strcat(ArcPath, "\\");
+        strcat(ArcPath, SystemFolder);
+    }
+}
+
+#if 0
+UCHAR ConvertArcNameToBiosDriveNumber(PCHAR ArcPath)
+{
+    char *    p;
+    UCHAR        DriveNumber = 0;
+
+    if (_strnicmp(ArcPath, "multi(0)disk(0)", 15) != 0)
+        return 0;
+
+    p = ArcPath + 15;
+    if (_strnicmp(p, "fdisk(", 6) == 0)
+    {
+        /*
+         * Floppy disk path:
+         *  multi(0)disk(0)fdisk(x)\path
+         */
+        p = p + 6;
+        DriveNumber = atoi(p);
+    }
+    else if (_strnicmp(p, "rdisk(", 6) == 0)
+    {
+        /*
+         * Hard disk path:
+         *  multi(0)disk(0)rdisk(x)partition(y)\path
+         */
+        p = p + 6;
+        DriveNumber = atoi(p) + 0x80;
+    }
+
+    return DriveNumber;
+}
+#endif