diff options
| author | Fabian Frederick <fabf@skynet.be> | 2014-01-29 17:13:16 +0800 |
|---|---|---|
| committer | Jan Kara <jack@suse.cz> | 2014-03-03 11:30:57 +0100 |
| commit | 8c6915aef70dc4633d8aec4bc3b4f6fb34e88063 (patch) | |
| tree | 21dfb39726ccd03693453814c889f19ed2e1bb15 | |
| parent | 0414855fdc4a40da05221fc6062cccbc0c30f169 (diff) | |
| download | blackbird-op-linux-8c6915aef70dc4633d8aec4bc3b4f6fb34e88063.tar.gz blackbird-op-linux-8c6915aef70dc4633d8aec4bc3b4f6fb34e88063.zip | |
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>
| -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: |
