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udf: Adjust UDF_NAME_LEN to better reflect actual restrictions

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Actual name length restriction is 254 bytes, this is used in 'ustr'
structure, and this is what fits into UDF File Ident structures.
And in most cases the constant is used as UDF_NAME_LEN-2.
So, it's better to just modify the constant to make it closer
to reality.

Also, in some cases it's useful to have a separate constant for
the maximum length of file name field in CS0 encoding in UDF File
Ident structures.

Also, remove the unused UDF_PATH_LEN constant.

Signed-off-by: Andrew Gabbasov <andrew_gabbasov@mentor.com>
Signed-off-by: Jan Kara <jack@suse.cz>
This commit is contained in:
Andrew Gabbasov 2016-01-15 02:44:21 -06:00 • committed by Jan Kara
parent 3e7fc2055c
commit 9fba70569d
4 changed files with 12 additions and 12 deletions
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6
fs/udf/udfdecl.h
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@ -49,8 +49,8 @@ extern __printf(3, 4) void _udf_warn(struct super_block *sb,
#define UDF_EXTENT_FLAG_MASK 0xC0000000
#define UDF_NAME_PAD 4
#define UDF_NAME_LEN 256
#define UDF_PATH_LEN 1023
#define UDF_NAME_LEN 254
#define UDF_NAME_LEN_CS0 255
static inline size_t udf_file_entry_alloc_offset(struct inode *inode)
{
@ -108,7 +108,7 @@ struct generic_desc {
struct ustr {
uint8_t u_cmpID;
uint8_t u_name[UDF_NAME_LEN - 2];
uint8_t u_name[UDF_NAME_LEN];
uint8_t u_len;
};