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Message-Id: <20241028110340.29911-6-pali@kernel.org>
Date: Mon, 28 Oct 2024 12:03:40 +0100
From: Pali Rohár <pali@...nel.org>
To: Steve French <sfrench@...ba.org>,
Paulo Alcantara <pc@...guebit.com>,
Ronnie Sahlberg <ronniesahlberg@...il.com>
Cc: linux-cifs@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: [PATCH 5/5] cifs: Remove unicode parameter from parse_reparse_point() function
This parameter is always true, so remove it and also remove dead code which
is never called (for all false code paths).
Signed-off-by: Pali Rohár <pali@...nel.org>
---
fs/smb/client/cifsproto.h | 2 +-
fs/smb/client/reparse.c | 25 +++++++++++--------------
fs/smb/client/smb1ops.c | 2 +-
fs/smb/client/smb2file.c | 1 -
fs/smb/client/smb2proto.h | 2 +-
5 files changed, 14 insertions(+), 18 deletions(-)
diff --git a/fs/smb/client/cifsproto.h b/fs/smb/client/cifsproto.h
index a7906c193647..31445d40f179 100644
--- a/fs/smb/client/cifsproto.h
+++ b/fs/smb/client/cifsproto.h
@@ -667,7 +667,7 @@ char *extract_sharename(const char *unc);
int parse_reparse_point(struct reparse_data_buffer *buf,
u32 plen, struct cifs_sb_info *cifs_sb,
const char *full_path,
- bool unicode, struct cifs_open_info_data *data);
+ struct cifs_open_info_data *data);
int __cifs_sfu_make_node(unsigned int xid, struct inode *inode,
struct dentry *dentry, struct cifs_tcon *tcon,
const char *full_path, umode_t mode, dev_t dev,
diff --git a/fs/smb/client/reparse.c b/fs/smb/client/reparse.c
index 3de91331c96c..50720142813e 100644
--- a/fs/smb/client/reparse.c
+++ b/fs/smb/client/reparse.c
@@ -775,7 +775,7 @@ static int parse_reparse_posix(struct reparse_posix_data *buf,
}
int smb2_parse_native_symlink(char **target, const char *buf, unsigned int len,
- bool unicode, bool relative,
+ bool relative,
const char *full_path,
struct cifs_sb_info *cifs_sb)
{
@@ -789,26 +789,24 @@ int smb2_parse_native_symlink(char **target, const char *buf, unsigned int len,
int rc;
int i;
- /* Check that length it valid for unicode/non-unicode mode */
- if (!len || (unicode && (len % 2))) {
+ /* Check that length it valid */
+ if (!len || (len % 2)) {
cifs_dbg(VFS, "srv returned malformed symlink buffer\n");
rc = -EIO;
goto out;
}
/*
- * Check that buffer does not contain UTF-16 null codepoint in unicode
- * mode or null byte in non-unicode mode because Linux cannot process
- * symlink with null byte.
+ * Check that buffer does not contain UTF-16 null codepoint
+ * because Linux cannot process symlink with null byte.
*/
- if ((unicode && UniStrnlen((wchar_t *)buf, len/2) != len/2) ||
- (!unicode && strnlen(buf, len) != len)) {
+ if (UniStrnlen((wchar_t *)buf, len/2) != len/2) {
cifs_dbg(VFS, "srv returned null byte in native symlink target location\n");
rc = -EIO;
goto out;
}
- smb_target = cifs_strndup_from_utf16(buf, len, unicode, cifs_sb->local_nls);
+ smb_target = cifs_strndup_from_utf16(buf, len, true, cifs_sb->local_nls);
if (!smb_target) {
rc = -ENOMEM;
goto out;
@@ -985,7 +983,7 @@ int smb2_parse_native_symlink(char **target, const char *buf, unsigned int len,
}
static int parse_reparse_native_symlink(struct reparse_symlink_data_buffer *sym,
- u32 plen, bool unicode,
+ u32 plen,
struct cifs_sb_info *cifs_sb,
const char *full_path,
struct cifs_open_info_data *data)
@@ -1005,7 +1003,6 @@ static int parse_reparse_native_symlink(struct reparse_symlink_data_buffer *sym,
return smb2_parse_native_symlink(&data->symlink_target,
sym->PathBuffer + offs,
len,
- unicode,
le32_to_cpu(sym->Flags) & SYMLINK_FLAG_RELATIVE,
full_path,
cifs_sb);
@@ -1060,7 +1057,7 @@ static int parse_reparse_wsl_symlink(struct reparse_wsl_symlink_data_buffer *buf
int parse_reparse_point(struct reparse_data_buffer *buf,
u32 plen, struct cifs_sb_info *cifs_sb,
const char *full_path,
- bool unicode, struct cifs_open_info_data *data)
+ struct cifs_open_info_data *data)
{
struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb);
@@ -1074,7 +1071,7 @@ int parse_reparse_point(struct reparse_data_buffer *buf,
case IO_REPARSE_TAG_SYMLINK:
return parse_reparse_native_symlink(
(struct reparse_symlink_data_buffer *)buf,
- plen, unicode, cifs_sb, full_path, data);
+ plen, cifs_sb, full_path, data);
case IO_REPARSE_TAG_LX_SYMLINK:
return parse_reparse_wsl_symlink(
(struct reparse_wsl_symlink_data_buffer *)buf,
@@ -1108,7 +1105,7 @@ int smb2_parse_reparse_point(struct cifs_sb_info *cifs_sb,
buf = (struct reparse_data_buffer *)((u8 *)io +
le32_to_cpu(io->OutputOffset));
- return parse_reparse_point(buf, plen, cifs_sb, full_path, true, data);
+ return parse_reparse_point(buf, plen, cifs_sb, full_path, data);
}
static void wsl_to_fattr(struct cifs_open_info_data *data,
diff --git a/fs/smb/client/smb1ops.c b/fs/smb/client/smb1ops.c
index f552951cfc04..3667fb94cbf5 100644
--- a/fs/smb/client/smb1ops.c
+++ b/fs/smb/client/smb1ops.c
@@ -1004,7 +1004,7 @@ static int cifs_parse_reparse_point(struct cifs_sb_info *cifs_sb,
buf = (struct reparse_data_buffer *)((__u8 *)&io->hdr.Protocol +
le32_to_cpu(io->DataOffset));
- return parse_reparse_point(buf, plen, cifs_sb, full_path, true, data);
+ return parse_reparse_point(buf, plen, cifs_sb, full_path, data);
}
static bool
diff --git a/fs/smb/client/smb2file.c b/fs/smb/client/smb2file.c
index 91b8d00fb88e..b0037058e8d9 100644
--- a/fs/smb/client/smb2file.c
+++ b/fs/smb/client/smb2file.c
@@ -132,7 +132,6 @@ int smb2_parse_symlink_response(struct cifs_sb_info *cifs_sb, const struct kvec
return smb2_parse_native_symlink(path,
(char *)sym->PathBuffer + sub_offs,
sub_len,
- true,
le32_to_cpu(sym->Flags) & SYMLINK_FLAG_RELATIVE,
full_path,
cifs_sb);
diff --git a/fs/smb/client/smb2proto.h b/fs/smb/client/smb2proto.h
index 5390d5a61039..c62493c0afc7 100644
--- a/fs/smb/client/smb2proto.h
+++ b/fs/smb/client/smb2proto.h
@@ -115,7 +115,7 @@ extern int smb3_query_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
unsigned int *pbytes_read);
int smb2_fix_symlink_target_type(char **target, bool directory, struct cifs_sb_info *cifs_sb);
int smb2_parse_native_symlink(char **target, const char *buf, unsigned int len,
- bool unicode, bool relative,
+ bool relative,
const char *full_path,
struct cifs_sb_info *cifs_sb);
int smb2_parse_symlink_response(struct cifs_sb_info *cifs_sb,
--
2.20.1
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