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Diffstat (limited to 'fs/cifs/smb1ops.c')
-rw-r--r--fs/cifs/smb1ops.c126
1 files changed, 91 insertions, 35 deletions
diff --git a/fs/cifs/smb1ops.c b/fs/cifs/smb1ops.c
index 5f5ba0dc2ee1..9ac5bfc9cc56 100644
--- a/fs/cifs/smb1ops.c
+++ b/fs/cifs/smb1ops.c
@@ -560,17 +560,24 @@ cifs_query_path_info(const unsigned int xid, struct cifs_tcon *tcon,
if (!rc && (le32_to_cpu(data->Attributes) & ATTR_REPARSE)) {
int tmprc;
int oplock = 0;
- __u16 netfid;
+ struct cifs_fid fid;
+ struct cifs_open_parms oparms;
+
+ oparms.tcon = tcon;
+ oparms.cifs_sb = cifs_sb;
+ oparms.desired_access = FILE_READ_ATTRIBUTES;
+ oparms.create_options = 0;
+ oparms.disposition = FILE_OPEN;
+ oparms.path = full_path;
+ oparms.fid = &fid;
+ oparms.reconnect = false;
/* Need to check if this is a symbolic link or not */
- tmprc = CIFSSMBOpen(xid, tcon, full_path, FILE_OPEN,
- FILE_READ_ATTRIBUTES, 0, &netfid, &oplock,
- NULL, cifs_sb->local_nls,
- cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
+ tmprc = CIFS_open(xid, &oparms, &oplock, NULL);
if (tmprc == -EOPNOTSUPP)
*symlink = true;
else
- CIFSSMBClose(xid, tcon, netfid);
+ CIFSSMBClose(xid, tcon, fid.netfid);
}
return rc;
@@ -705,12 +712,7 @@ cifs_open_file(const unsigned int xid, struct cifs_open_parms *oparms,
oparms->cifs_sb->local_nls,
oparms->cifs_sb->mnt_cifs_flags
& CIFS_MOUNT_MAP_SPECIAL_CHR);
- return CIFSSMBOpen(xid, oparms->tcon, oparms->path,
- oparms->disposition, oparms->desired_access,
- oparms->create_options, &oparms->fid->netfid, oplock,
- buf, oparms->cifs_sb->local_nls,
- oparms->cifs_sb->mnt_cifs_flags &
- CIFS_MOUNT_MAP_SPECIAL_CHR);
+ return CIFS_open(xid, oparms, oplock, buf);
}
static void
@@ -761,8 +763,9 @@ smb_set_file_info(struct inode *inode, const char *full_path,
{
int oplock = 0;
int rc;
- __u16 netfid;
__u32 netpid;
+ struct cifs_fid fid;
+ struct cifs_open_parms oparms;
struct cifsFileInfo *open_file;
struct cifsInodeInfo *cinode = CIFS_I(inode);
struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
@@ -772,7 +775,7 @@ smb_set_file_info(struct inode *inode, const char *full_path,
/* if the file is already open for write, just use that fileid */
open_file = find_writable_file(cinode, true);
if (open_file) {
- netfid = open_file->fid.netfid;
+ fid.netfid = open_file->fid.netfid;
netpid = open_file->pid;
tcon = tlink_tcon(open_file->tlink);
goto set_via_filehandle;
@@ -796,12 +799,17 @@ smb_set_file_info(struct inode *inode, const char *full_path,
goto out;
}
- cifs_dbg(FYI, "calling SetFileInfo since SetPathInfo for times not supported by this server\n");
- rc = CIFSSMBOpen(xid, tcon, full_path, FILE_OPEN,
- SYNCHRONIZE | FILE_WRITE_ATTRIBUTES, CREATE_NOT_DIR,
- &netfid, &oplock, NULL, cifs_sb->local_nls,
- cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
+ oparms.tcon = tcon;
+ oparms.cifs_sb = cifs_sb;
+ oparms.desired_access = SYNCHRONIZE | FILE_WRITE_ATTRIBUTES;
+ oparms.create_options = CREATE_NOT_DIR;
+ oparms.disposition = FILE_OPEN;
+ oparms.path = full_path;
+ oparms.fid = &fid;
+ oparms.reconnect = false;
+ cifs_dbg(FYI, "calling SetFileInfo since SetPathInfo for times not supported by this server\n");
+ rc = CIFS_open(xid, &oparms, &oplock, NULL);
if (rc != 0) {
if (rc == -EIO)
rc = -EINVAL;
@@ -811,12 +819,12 @@ smb_set_file_info(struct inode *inode, const char *full_path,
netpid = current->tgid;
set_via_filehandle:
- rc = CIFSSMBSetFileInfo(xid, tcon, buf, netfid, netpid);
+ rc = CIFSSMBSetFileInfo(xid, tcon, buf, fid.netfid, netpid);
if (!rc)
cinode->cifsAttrs = le32_to_cpu(buf->Attributes);
if (open_file == NULL)
- CIFSSMBClose(xid, tcon, netfid);
+ CIFSSMBClose(xid, tcon, fid.netfid);
else
cifsFileInfo_put(open_file);
out:
@@ -908,33 +916,80 @@ cifs_mand_lock(const unsigned int xid, struct cifsFileInfo *cfile, __u64 offset,
}
static int
+cifs_unix_dfs_readlink(const unsigned int xid, struct cifs_tcon *tcon,
+ const unsigned char *searchName, char **symlinkinfo,
+ const struct nls_table *nls_codepage)
+{
+#ifdef CONFIG_CIFS_DFS_UPCALL
+ int rc;
+ unsigned int num_referrals = 0;
+ struct dfs_info3_param *referrals = NULL;
+
+ rc = get_dfs_path(xid, tcon->ses, searchName, nls_codepage,
+ &num_referrals, &referrals, 0);
+
+ if (!rc && num_referrals > 0) {
+ *symlinkinfo = kstrndup(referrals->node_name,
+ strlen(referrals->node_name),
+ GFP_KERNEL);
+ if (!*symlinkinfo)
+ rc = -ENOMEM;
+ free_dfs_info_array(referrals, num_referrals);
+ }
+ return rc;
+#else /* No DFS support */
+ return -EREMOTE;
+#endif
+}
+
+static int
cifs_query_symlink(const unsigned int xid, struct cifs_tcon *tcon,
const char *full_path, char **target_path,
struct cifs_sb_info *cifs_sb)
{
int rc;
int oplock = 0;
- __u16 netfid;
+ struct cifs_fid fid;
+ struct cifs_open_parms oparms;
cifs_dbg(FYI, "%s: path: %s\n", __func__, full_path);
- rc = CIFSSMBOpen(xid, tcon, full_path, FILE_OPEN,
- FILE_READ_ATTRIBUTES, OPEN_REPARSE_POINT, &netfid,
- &oplock, NULL, cifs_sb->local_nls,
- cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
+ /* Check for unix extensions */
+ if (cap_unix(tcon->ses)) {
+ rc = CIFSSMBUnixQuerySymLink(xid, tcon, full_path, target_path,
+ cifs_sb->local_nls);
+ if (rc == -EREMOTE)
+ rc = cifs_unix_dfs_readlink(xid, tcon, full_path,
+ target_path,
+ cifs_sb->local_nls);
+
+ goto out;
+ }
+
+ oparms.tcon = tcon;
+ oparms.cifs_sb = cifs_sb;
+ oparms.desired_access = FILE_READ_ATTRIBUTES;
+ oparms.create_options = OPEN_REPARSE_POINT;
+ oparms.disposition = FILE_OPEN;
+ oparms.path = full_path;
+ oparms.fid = &fid;
+ oparms.reconnect = false;
+
+ rc = CIFS_open(xid, &oparms, &oplock, NULL);
if (rc)
- return rc;
+ goto out;
- rc = CIFSSMBQuerySymLink(xid, tcon, netfid, target_path,
+ rc = CIFSSMBQuerySymLink(xid, tcon, fid.netfid, target_path,
cifs_sb->local_nls);
- if (rc) {
- CIFSSMBClose(xid, tcon, netfid);
- return rc;
- }
+ if (rc)
+ goto out_close;
convert_delimiter(*target_path, '/');
- CIFSSMBClose(xid, tcon, netfid);
- cifs_dbg(FYI, "%s: target path: %s\n", __func__, *target_path);
+out_close:
+ CIFSSMBClose(xid, tcon, fid.netfid);
+out:
+ if (!rc)
+ cifs_dbg(FYI, "%s: target path: %s\n", __func__, *target_path);
return rc;
}
@@ -1009,7 +1064,8 @@ struct smb_version_operations smb1_operations = {
.mand_lock = cifs_mand_lock,
.mand_unlock_range = cifs_unlock_range,
.push_mand_locks = cifs_push_mandatory_locks,
- .query_mf_symlink = open_query_close_cifs_symlink,
+ .query_mf_symlink = cifs_query_mf_symlink,
+ .create_mf_symlink = cifs_create_mf_symlink,
.is_read_op = cifs_is_read_op,
};
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.