Commit db415f7a authored by Ilya Ponetayev's avatar Ilya Ponetayev Committed by Namjae Jeon

exfat: fix name_hash computation on big endian systems

On-disk format for name_hash field is LE, so it must be explicitly
transformed on BE system for proper result.

Fixes: 370e812b ("exfat: add nls operations")
Cc: stable@vger.kernel.org # v5.7
Signed-off-by: default avatarChen Minqiang <ptpt52@gmail.com>
Signed-off-by: default avatarIlya Ponetayev <i.ponetaev@ndmsystems.com>
Reviewed-by: default avatarSungjong Seo <sj1557.seo@samsung.com>
Signed-off-by: default avatarNamjae Jeon <namjae.jeon@samsung.com>
parent 41e3928f
...@@ -495,7 +495,7 @@ static int exfat_utf8_to_utf16(struct super_block *sb, ...@@ -495,7 +495,7 @@ static int exfat_utf8_to_utf16(struct super_block *sb,
struct exfat_uni_name *p_uniname, int *p_lossy) struct exfat_uni_name *p_uniname, int *p_lossy)
{ {
int i, unilen, lossy = NLS_NAME_NO_LOSSY; int i, unilen, lossy = NLS_NAME_NO_LOSSY;
unsigned short upname[MAX_NAME_LENGTH + 1]; __le16 upname[MAX_NAME_LENGTH + 1];
unsigned short *uniname = p_uniname->name; unsigned short *uniname = p_uniname->name;
WARN_ON(!len); WARN_ON(!len);
...@@ -519,7 +519,7 @@ static int exfat_utf8_to_utf16(struct super_block *sb, ...@@ -519,7 +519,7 @@ static int exfat_utf8_to_utf16(struct super_block *sb,
exfat_wstrchr(bad_uni_chars, *uniname)) exfat_wstrchr(bad_uni_chars, *uniname))
lossy |= NLS_NAME_LOSSY; lossy |= NLS_NAME_LOSSY;
upname[i] = exfat_toupper(sb, *uniname); upname[i] = cpu_to_le16(exfat_toupper(sb, *uniname));
uniname++; uniname++;
} }
...@@ -597,7 +597,7 @@ static int exfat_nls_to_ucs2(struct super_block *sb, ...@@ -597,7 +597,7 @@ static int exfat_nls_to_ucs2(struct super_block *sb,
struct exfat_uni_name *p_uniname, int *p_lossy) struct exfat_uni_name *p_uniname, int *p_lossy)
{ {
int i = 0, unilen = 0, lossy = NLS_NAME_NO_LOSSY; int i = 0, unilen = 0, lossy = NLS_NAME_NO_LOSSY;
unsigned short upname[MAX_NAME_LENGTH + 1]; __le16 upname[MAX_NAME_LENGTH + 1];
unsigned short *uniname = p_uniname->name; unsigned short *uniname = p_uniname->name;
struct nls_table *nls = EXFAT_SB(sb)->nls_io; struct nls_table *nls = EXFAT_SB(sb)->nls_io;
...@@ -611,7 +611,7 @@ static int exfat_nls_to_ucs2(struct super_block *sb, ...@@ -611,7 +611,7 @@ static int exfat_nls_to_ucs2(struct super_block *sb,
exfat_wstrchr(bad_uni_chars, *uniname)) exfat_wstrchr(bad_uni_chars, *uniname))
lossy |= NLS_NAME_LOSSY; lossy |= NLS_NAME_LOSSY;
upname[unilen] = exfat_toupper(sb, *uniname); upname[unilen] = cpu_to_le16(exfat_toupper(sb, *uniname));
uniname++; uniname++;
unilen++; unilen++;
} }
......
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