1 files changed, 146 insertions, 0 deletions
diff --git a/e2fsck/iscan.c b/e2fsck/iscan.c
new file mode 100644
index 00000000..d964b344
--- /dev/null
+++ b/e2fsck/iscan.c
@@ -0,0 +1,146 @@
+/*
+ * Test to see how quickly we can scan the inode table (not doing
+ * anything else)
+ */
+
+#include <string.h>
+#include <fcntl.h>
+#include <ctype.h>
+#include <termios.h>
+#include <time.h>
+#ifdef HAVE_GETOPT_H
+#include <getopt.h>
+#endif
+#include <unistd.h>
+#ifdef HAVE_ERRNO_H
+#include <errno.h>
+#endif
+#ifdef HAVE_MNTENT_H
+#include <mntent.h>
+#endif
+#include <sys/ioctl.h>
+#include <malloc.h>
+
+#include "et/com_err.h"
+#include "e2fsck.h"
+#include "../version.h"
+
+extern int isatty(int);
+
+const char * program_name = "iscan";
+const char * device_name = NULL;
+
+int yflag = 0;
+int nflag = 0;
+int preen = 0;
+int inode_buffer_blocks = 0;
+int invalid_bitmaps = 0;
+
+struct resource_track	global_rtrack;
+
+static void usage(NOARGS)
+{
+	fprintf(stderr,
+		"Usage: %s [-F] [-I inode_buffer_blocks] device\n",
+		program_name);
+	exit(1);
+}
+
+static void PRS(int argc, char *argv[])
+{
+	int		flush = 0;
+	char		c;
+#ifdef MTRACE
+	extern void	*mallwatch;
+#endif
+
+	setbuf(stdout, NULL);
+	setbuf(stderr, NULL);
+	initialize_ext2_error_table();
+	
+	if (argc && *argv)
+		program_name = *argv;
+	while ((c = getopt (argc, argv, "FI")) != EOF)
+		switch (c) {
+		case 'F':
+#ifdef BLKFLSBUF
+			flush = 1;
+#else
+			fatal_error ("-F not supported");
+#endif
+			break;
+		case 'I':
+			inode_buffer_blocks = atoi(optarg);
+			break;
+		default:
+			usage ();
+		}
+	device_name = argv[optind];
+	if (flush) {
+#ifdef BLKFLSBUF
+		int	fd = open(device_name, O_RDONLY, 0);
+
+		if (fd < 0) {
+			com_err("open", errno, "while opening %s for flushing",
+				device_name);
+			exit(FSCK_ERROR);
+		}
+		if (ioctl(fd, BLKFLSBUF, 0) < 0) {
+			com_err("BLKFLSBUF", errno, "while trying to flush %s",
+				device_name);
+			exit(FSCK_ERROR);
+		}
+		close(fd);
+#else
+		fatal_error ("BLKFLSBUF not supported");
+#endif /* BLKFLSBUF */
+	}
+}
+					
+int main (int argc, char *argv[])
+{
+	errcode_t	retval = 0;
+	int		exit_value = FSCK_OK;
+	ext2_filsys	fs;
+	ino_t	ino;
+	int	num_inodes = 0;
+	struct ext2_inode inode;
+	ext2_inode_scan	scan;
+	
+	init_resource_track(&global_rtrack);
+
+	PRS(argc, argv);
+
+	retval = ext2fs_open(device_name, 0,
+			     0, 0, unix_io_manager, &fs);
+	if (retval) {
+		com_err(program_name, retval, "while trying to open %s",
+			device_name);
+		exit(1);
+	}
+
+	ehandler_init(fs->io);
+	
+	retval = ext2fs_open_inode_scan(fs, inode_buffer_blocks, &scan);
+	if (retval) {
+		com_err(program_name, retval, "while opening inode scan");
+		fatal_error(0);
+	}
+
+	while (1) {
+		retval = ext2fs_get_next_inode(scan, &ino, &inode);
+		if (retval) {
+			com_err(program_name, retval,
+				"while getting next inode");
+			fatal_error(0);
+		}
+		if (ino == 0)
+			break;
+		num_inodes++;
+	}
+	
+	print_resource_track(&global_rtrack);
+	printf("%d inodes scanned.\n", num_inodes);
+	
+	exit(0);
+}