[f2fs-dev] [PATCH 4/4] mkfs.f2fs: print the default list if no argument is given to -e and -E

[Park Ju Hyung]

Signed-off-by: Park Ju Hyung <qkrwngud...@gmail.com>
---
 mkfs/f2fs_format.c       | 29 +++++++++++++++++++++++++++++
 mkfs/f2fs_format_main.c  |  7 ++++++-
 mkfs/f2fs_format_utils.h |  1 +
 3 files changed, 36 insertions(+), 1 deletion(-)

diff --git a/mkfs/f2fs_format.c b/mkfs/f2fs_format.c
index 10ccca0..aa372ca 100644
--- a/mkfs/f2fs_format.c
+++ b/mkfs/f2fs_format.c
@@ -111,6 +111,35 @@ const char **default_ext_list[] = {
        hot_ext_lists
 };
 
+void f2fs_list_extensions(void)
+{
+       int i;
+       const char **extlist;
+
+       MSG(0, "Listing default extensions for storing in cold mode\n\n");
+
+       extlist = cold_ext_lists;
+       for (i = 0; *(extlist + i); i++) {
+               printf("%4s, ", *(extlist + i));
+               if ((i + 1) % 8 == 0)
+                       printf("\n");
+       }
+
+       printf("\n\n");
+       MSG(0, "Listing default extensions for storing in hot mode\n\n");
+
+       extlist = hot_ext_lists;
+       for (i = 0; *(extlist + i); i++) {
+               printf("%4s, ", *(extlist + i));
+               if ((i + 1) % 8 == 0)
+                       printf("\n");
+       }
+
+       printf("\n\n");
+
+       exit(0);
+}
+
 static bool is_extension_exist(const char *name)
 {
        int i;
diff --git a/mkfs/f2fs_format_main.c b/mkfs/f2fs_format_main.c
index f23fd84..56ca741 100644
--- a/mkfs/f2fs_format_main.c
+++ b/mkfs/f2fs_format_main.c
@@ -46,6 +46,7 @@ static void mkfs_usage()
        MSG(0, "  -d debug level [default:0]\n");
        MSG(0, "  -e [cold file ext list] e.g. \"mp3,gif,mov\"\n");
        MSG(0, "  -E [hot file ext list] e.g. \"db\"\n");
+       MSG(0, "     If no list is given, the default list will be printed\n");
        MSG(0, "  -f force overwrite the exist filesystem\n");
        MSG(0, "  -i extended node bitmap, node ratio is 20%% by default\n");
        MSG(0, "  -l label\n");
@@ -108,7 +109,7 @@ static void parse_feature(const char *features)
 
 static void f2fs_parse_options(int argc, char *argv[])
 {
-       static const char *option_string = "qa:c:d:e:E:il:mo:O:s:S:z:t:f";
+       static const char *option_string = "qa:c:d:eEil:mo:O:s:S:z:t:f";
        int32_t option=0;
 
        while ((option = getopt(argc,argv,option_string)) != EOF) {
@@ -136,9 +137,13 @@ static void f2fs_parse_options(int argc, char *argv[])
                        c.dbg_lv = atoi(optarg);
                        break;
                case 'e':
+                       if (!optarg)
+                               f2fs_list_extensions();
                        c.extension_list[0] = strdup(optarg);
                        break;
                case 'E':
+                       if (!optarg)
+                               f2fs_list_extensions();
                        c.extension_list[1] = strdup(optarg);
                        break;
                case 'i':
diff --git a/mkfs/f2fs_format_utils.h b/mkfs/f2fs_format_utils.h
index 274db7b..4246c3f 100644
--- a/mkfs/f2fs_format_utils.h
+++ b/mkfs/f2fs_format_utils.h
@@ -12,6 +12,7 @@
 
 extern struct f2fs_configuration c;
 
+void f2fs_list_extensions(void);
 int f2fs_trim_device(int, u_int64_t);
 int f2fs_trim_devices(void);
 int f2fs_format_device(void);
-- 
2.16.2


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