From: Philip Homburg <philip@cs.vu.nl>
Date: Mon, 15 Aug 2005 13:15:39 +0000 (+0000)
Subject: Use a fake geometry for files.
X-Git-Tag: v3.1.0~332
X-Git-Url: http://zhaoyanbai.com/repos/%22http:/www.isc.org/icons/host.html?a=commitdiff_plain;h=f0c331c51ca7d73de8b3142634c63f53fd58dd7f;p=minix.git

Use a fake geometry for files.
---

diff --git a/commands/ibm/partition.c b/commands/ibm/partition.c
index bcb90ec09..4cfc606bf 100755
--- a/commands/ibm/partition.c
+++ b/commands/ibm/partition.c
@@ -293,11 +293,23 @@ void geometry(void)
 {
 	int fd;
 	struct partition geometry;
+	struct stat sb;
 
 	if ((fd= open(device, O_RDONLY)) < 0) fatal(device);
 
 	/* Get the geometry of the drive, and the device's base and size. */
-	if (ioctl(fd, DIOCGETP, &geometry) < 0) fatal(device);
+	if (ioctl(fd, DIOCGETP, &geometry) < 0)
+	{
+		/* Faking geometry. Use the same fake geometry as part. */
+		if (fstat(fd, &sb) < 0)
+			fatal(device);
+		geometry.base= cvul64(0);
+		geometry.size= cvul64(sb.st_size);
+		geometry.sectors= 32;
+		geometry.heads= 64;
+		geometry.cylinders= (sb.st_size-1)/SECTOR_SIZE/
+			(geometry.sectors*geometry.heads) + 1;
+	}
 	close(fd);
 	primary.lowsec= div64u(geometry.base, SECTOR_SIZE);
 	primary.size= div64u(geometry.size, SECTOR_SIZE);