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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: Fabian Frederick <fabf@skynet.be> Signed-off-by: Jan Kara <jack@suse.cz>
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1 changed files with 5 additions and 1 deletions
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@ -505,6 +505,7 @@ static int udf_parse_options(char *options, struct udf_options *uopt,
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while ((p = strsep(&options, ",")) != NULL) {
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substring_t args[MAX_OPT_ARGS];
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int token;
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unsigned n;
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if (!*p)
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continue;
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@ -516,7 +517,10 @@ static int udf_parse_options(char *options, struct udf_options *uopt,
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case Opt_bs:
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if (match_int(&args[0], &option))
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return 0;
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uopt->blocksize = option;
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n = option;
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if (n != 512 && n != 1024 && n != 2048 && n != 4096)
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return 0;
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uopt->blocksize = n;
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uopt->flags |= (1 << UDF_FLAG_BLOCKSIZE_SET);
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break;
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case Opt_unhide:
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