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Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs 

Pull UDF fix from Jan Kara:
 "A fix of a regression in UDF that got introduced in 4.6-rc1 by one of
  the charset encoding fixes"

* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
  udf: Fix conversion of 'dstring' fields to UTF8
This commit is contained in:
Linus Torvalds 2016-05-02 09:59:57 -07:00
parent 5f40adbc3e c26f6c6157
commit 33656a1f2e
3 changed files with 17 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
fs/udf/super.c
View File

@ -919,14 +919,14 @@ static int udf_load_pvoldesc(struct super_block *sb, sector_t block)
#endif
}
ret = udf_CS0toUTF8(outstr, 31, pvoldesc->volIdent, 32);
ret = udf_dstrCS0toUTF8(outstr, 31, pvoldesc->volIdent, 32);
if (ret < 0)
goto out_bh;
strncpy(UDF_SB(sb)->s_volume_ident, outstr, ret);
udf_debug("volIdent[] = '%s'\n", UDF_SB(sb)->s_volume_ident);
ret = udf_CS0toUTF8(outstr, 127, pvoldesc->volSetIdent, 128);
ret = udf_dstrCS0toUTF8(outstr, 127, pvoldesc->volSetIdent, 128);
if (ret < 0)
goto out_bh;

2
fs/udf/udfdecl.h
View File

@ -212,7 +212,7 @@ extern int udf_get_filename(struct super_block *, const uint8_t *, int,
uint8_t *, int);
extern int udf_put_filename(struct super_block *, const uint8_t *, int,
uint8_t *, int);
extern int udf_CS0toUTF8(uint8_t *, int, const uint8_t *, int);
extern int udf_dstrCS0toUTF8(uint8_t *, int, const uint8_t *, int);
/* ialloc.c */
extern void udf_free_inode(struct inode *);

16
fs/udf/unicode.c
View File

@ -335,9 +335,21 @@ static int udf_name_to_CS0(uint8_t *ocu, int ocu_max_len,
return u_len;
}
int udf_CS0toUTF8(uint8_t *utf_o, int o_len, const uint8_t *ocu_i, int i_len)
int udf_dstrCS0toUTF8(uint8_t *utf_o, int o_len,
const uint8_t *ocu_i, int i_len)
{
return udf_name_from_CS0(utf_o, o_len, ocu_i, i_len,
int s_len = 0;
if (i_len > 0) {
s_len = ocu_i[i_len - 1];
if (s_len >= i_len) {
pr_err("incorrect dstring lengths (%d/%d)\n",
s_len, i_len);
return -EINVAL;
}
}
return udf_name_from_CS0(utf_o, o_len, ocu_i, s_len,
udf_uni2char_utf8, 0);
}