Print the filesystem creation time in show-super

diff --git a/libbcachefs.c b/libbcachefs.c
index df27d59da62fbdb0c67d43c3ff039659288a2bc5..d4993a1505a1f5c1f2d32abc68a7d31416df7f29 100644 (file)
--- a/libbcachefs.c
+++ b/libbcachefs.c
@@ -568,15 +568,26 @@ void bch2_sb_print(struct bch_sb *sb, bool print_layout,
        char user_uuid_str[40], internal_uuid_str[40];
        char fields_have_str[200];
        char label[BCH_SB_LABEL_SIZE + 1];
+       char time_str[64];
        struct bch_sb_field *f;
        u64 fields_have = 0;
        unsigned nr_devices = 0;
+       time_t time_base = le64_to_cpu(sb->time_base_lo) / NSEC_PER_SEC;
 
        memset(label, 0, sizeof(label));
        memcpy(label, sb->label, sizeof(sb->label));
        uuid_unparse(sb->user_uuid.b, user_uuid_str);
        uuid_unparse(sb->uuid.b, internal_uuid_str);
 
+       if (time_base) {
+               struct tm *tm = localtime(&time_base);
+               size_t err = strftime(time_str, sizeof(time_str), "%c", tm);
+               if (!err)
+                       strcpy(time_str, "(formatting error)");
+       } else {
+               strcpy(time_str, "(not set)");
+       }
+
        mi = bch2_sb_get_members(sb);
        if (mi) {
                struct bch_member *m;
@@ -596,6 +607,7 @@ void bch2_sb_print(struct bch_sb *sb, bool print_layout,
               "Internal UUID:                  %s\n"
               "Label:                          %s\n"
               "Version:                        %llu\n"
+              "Created:                        %s\n"
               "Block_size:                     %s\n"
               "Btree node size:                %s\n"
               "Error action:                   %s\n"
@@ -624,6 +636,7 @@ void bch2_sb_print(struct bch_sb *sb, bool print_layout,
               internal_uuid_str,
               label,
               le64_to_cpu(sb->version),
+              time_str,
               pr_units(le16_to_cpu(sb->block_size), units),
               pr_units(BCH_SB_BTREE_NODE_SIZE(sb), units),