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Commit 8c6915ae authored by Fabian Frederick's avatar Fabian Frederick Committed by Jan Kara
Browse files

fs: udf: parse_options: blocksize check 



Both affs and isofs check for blocksize integrity during
parse_options.Do the same thing for udf.

Valid values : 512, 1024, 2048 or 4096 bytes.

Signed-off-by: default avatarFabian Frederick <fabf@skynet.be>
Signed-off-by: default avatarJan Kara <jack@suse.cz>
parent 0414855f

fs/udf/super.c

+5 −1
Original line number Diff line number Diff line
@@ -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: