diff options
| -rw-r--r-- | fs/udf/super.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/fs/udf/super.c b/fs/udf/super.c index 3306b9f69bed..ac765386004e 100644 --- a/fs/udf/super.c +++ b/fs/udf/super.c @@ -505,6 +505,7 @@ static int udf_parse_options(char *options, struct udf_options *uopt, while ((p = strsep(&options, ",")) != NULL) { substring_t args[MAX_OPT_ARGS]; int token; + unsigned n; if (!*p) continue; @@ -516,7 +517,10 @@ static int udf_parse_options(char *options, struct udf_options *uopt, case Opt_bs: if (match_int(&args[0], &option)) return 0; - uopt->blocksize = option; + n = option; + if (n != 512 && n != 1024 && n != 2048 && n != 4096) + return 0; + uopt->blocksize = n; uopt->flags |= (1 << UDF_FLAG_BLOCKSIZE_SET); break; case Opt_unhide: |
