[PATCH V3 15/23] mdrestore: Define and use struct mdrestore

[Chandan Babu R <chandan.babu@xxxxxxxxxx>]

This commit collects all state tracking variables in a new "struct mdrestore"
structure. This is done to collect all the global variables in one place
rather than having them spread across the file. A new structure member of type
"struct mdrestore_ops *" will be added by a future commit to support the two
versions of metadump.

Reviewed-by: Darrick J. Wong <djwong@xxxxxxxxxx>
Signed-off-by: Chandan Babu R <chandan.babu@xxxxxxxxxx>
---
 mdrestore/xfs_mdrestore.c | 27 +++++++++++++++++----------
 1 file changed, 17 insertions(+), 10 deletions(-)

diff --git a/mdrestore/xfs_mdrestore.c b/mdrestore/xfs_mdrestore.c
index ca28c48e..97cb4e35 100644
--- a/mdrestore/xfs_mdrestore.c
+++ b/mdrestore/xfs_mdrestore.c
@@ -7,9 +7,11 @@
 #include "libxfs.h"
 #include "xfs_metadump.h"
 
-static bool	show_progress = false;
-static bool	show_info = false;
-static bool	progress_since_warning = false;
+static struct mdrestore {
+	bool	show_progress;
+	bool	show_info;
+	bool	progress_since_warning;
+} mdrestore;
 
 static void
 fatal(const char *msg, ...)
@@ -35,7 +37,7 @@ print_progress(const char *fmt, ...)
 
 	printf("\r%-59s", buf);
 	fflush(stdout);
-	progress_since_warning = true;
+	mdrestore.progress_since_warning = true;
 }
 
 /*
@@ -127,7 +129,8 @@ perform_restore(
 	bytes_read = 0;
 
 	for (;;) {
-		if (show_progress && (bytes_read & ((1 << 20) - 1)) == 0)
+		if (mdrestore.show_progress &&
+		    (bytes_read & ((1 << 20) - 1)) == 0)
 			print_progress("%lld MB read", bytes_read >> 20);
 
 		for (cur_index = 0; cur_index < mb_count; cur_index++) {
@@ -158,7 +161,7 @@ perform_restore(
 		bytes_read += block_size + (mb_count << mbp->mb_blocklog);
 	}
 
-	if (progress_since_warning)
+	if (mdrestore.progress_since_warning)
 		putchar('\n');
 
 	memset(block_buffer, 0, sb.sb_sectsize);
@@ -197,15 +200,19 @@ main(
 	int		is_target_file;
 	struct xfs_metablock	mb;
 
+	mdrestore.show_progress = false;
+	mdrestore.show_info = false;
+	mdrestore.progress_since_warning = false;
+
 	progname = basename(argv[0]);
 
 	while ((c = getopt(argc, argv, "giV")) != EOF) {
 		switch (c) {
 			case 'g':
-				show_progress = true;
+				mdrestore.show_progress = true;
 				break;
 			case 'i':
-				show_info = true;
+				mdrestore.show_info = true;
 				break;
 			case 'V':
 				printf("%s version %s\n", progname, VERSION);
@@ -219,7 +226,7 @@ main(
 		usage();
 
 	/* show_info without a target is ok */
-	if (!show_info && argc - optind != 2)
+	if (!mdrestore.show_info && argc - optind != 2)
 		usage();
 
 	/*
@@ -243,7 +250,7 @@ main(
 	if (mb.mb_magic != cpu_to_be32(XFS_MD_MAGIC_V1))
 		fatal("specified file is not a metadata dump\n");
 
-	if (show_info) {
+	if (mdrestore.show_info) {
 		if (mb.mb_info & XFS_METADUMP_INFO_FLAGS) {
 			printf("%s: %sobfuscated, %s log, %s metadata blocks\n",
 			argv[optind],
-- 
2.39.1