partinfo.c:

Add preliminary version of the partinfo program.

misc/partinfo.c

@@ -0,0 +1,66 @@
+/*
+ * partinfo.c
+ *
+ * Originally written by Alain Knaff, <alknaff@innet.lu>.
+ *
+ * Cleaned up by Theodore Ts'o, <tytso@mit.edu>.
+ * 
+ */
+
+#include <sys/types.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <linux/fs.h>
+#include <linux/hdreg.h>
+#include <unistd.h>
+#include <stdlib.h>
+
+void print_error(char *operation, int error, char *device)
+{
+	fprintf(stderr, "%s failed for %s: %s\n", operation, device,
+		strerror(error));
+}
+
+int main(int argc, char **argv)
+{
+	struct hd_geometry loc;
+	int fd, size, i;
+
+	if (argc == 1) {
+		fprintf(stderr, "Usage: %s <dev1> <dev2> <dev3>\n\n"
+			"This program prints out the partition information "
+			"for a set of devices\n"
+			"A common way to use this progrma is:\n\n\t"
+			"%s /dev/hda?\n\n", argv[0], argv[0]);
+		exit(1);
+	}
+    
+	for (i=1; i < argc; i++) {
+		fd = open(argv[i], O_RDONLY);
+
+		if (fd < 0) {
+			print_error("open", errno, argv[1]);
+			continue;
+		}
+    
+		if (ioctl(fd, HDIO_GETGEO, &loc) < 0) {
+			print_error("HDIO_GETGEO ioctl", errno, argv[1]);
+			close(fd);
+			continue;
+		}
+    
+    
+		if (ioctl(fd, BLKGETSIZE, &size) < 0) {
+			print_error("BLKGETSIZE ioctl", errno, argv[1]);
+			close(fd);
+			continue;
+		}
+    
+		printf("%s: h=%3d s=%3d c=%4d   start=%8d size=%8d end=%8d\n",
+		       argv[i], 
+		       loc.heads, (int)loc.sectors, loc.cylinders,
+		       (int)loc.start, size, (int) loc.start + size -1);
+		close(fd);
+	}
+	exit(0);
+}