6.6-stable review patch. If anyone has any objections, please let me know.
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From: Paulo Alcantara pc@manguebit.com
[ Upstream commit f83709b9e0eb7048d74ba4515f268c6eacbce9c9 ]
Merge smb311_posix_query_path_info into ->query_path_info() to get rid of duplicate code.
Signed-off-by: Paulo Alcantara pc@manguebit.com Signed-off-by: Steve French stfrench@microsoft.com Signed-off-by: Sasha Levin sashal@kernel.org --- fs/smb/client/inode.c | 4 +- fs/smb/client/smb2inode.c | 115 +++++++++++--------------------------- 2 files changed, 36 insertions(+), 83 deletions(-)
diff --git a/fs/smb/client/inode.c b/fs/smb/client/inode.c index 0110589acb853..d7e3da8489a0b 100644 --- a/fs/smb/client/inode.c +++ b/fs/smb/client/inode.c @@ -1313,6 +1313,7 @@ static int smb311_posix_get_fattr(struct cifs_open_info_data *data, const unsigned int xid) { struct cifs_open_info_data tmp_data = {}; + struct TCP_Server_Info *server; struct cifs_sb_info *cifs_sb = CIFS_SB(sb); struct cifs_tcon *tcon; struct tcon_link *tlink; @@ -1323,12 +1324,13 @@ static int smb311_posix_get_fattr(struct cifs_open_info_data *data, if (IS_ERR(tlink)) return PTR_ERR(tlink); tcon = tlink_tcon(tlink); + server = tcon->ses->server;
/* * 1. Fetch file metadata if not provided (data) */ if (!data) { - rc = smb311_posix_query_path_info(xid, tcon, cifs_sb, + rc = server->ops->query_path_info(xid, tcon, cifs_sb, full_path, &tmp_data); data = &tmp_data; } diff --git a/fs/smb/client/smb2inode.c b/fs/smb/client/smb2inode.c index 4cd4b8a63316d..dfa4e5362213f 100644 --- a/fs/smb/client/smb2inode.c +++ b/fs/smb/client/smb2inode.c @@ -699,7 +699,7 @@ int smb2_query_path_info(const unsigned int xid, struct smb2_hdr *hdr; struct kvec in_iov[2], out_iov[3] = {}; int out_buftype[3] = {}; - int cmds[2] = { SMB2_OP_QUERY_INFO, }; + int cmds[2]; bool islink; int i, num_cmds; int rc, rc2; @@ -707,20 +707,36 @@ int smb2_query_path_info(const unsigned int xid, data->adjust_tz = false; data->reparse_point = false;
- if (strcmp(full_path, "")) - rc = -ENOENT; - else - rc = open_cached_dir(xid, tcon, full_path, cifs_sb, false, &cfid); - /* If it is a root and its handle is cached then use it */ - if (!rc) { - if (cfid->file_all_info_is_valid) { - memcpy(&data->fi, &cfid->file_all_info, sizeof(data->fi)); + /* + * BB TODO: Add support for using cached root handle in SMB3.1.1 POSIX. + * Create SMB2_query_posix_info worker function to do non-compounded + * query when we already have an open file handle for this. For now this + * is fast enough (always using the compounded version). + */ + if (!tcon->posix_extensions) { + if (*full_path) { + rc = -ENOENT; } else { - rc = SMB2_query_info(xid, tcon, cfid->fid.persistent_fid, - cfid->fid.volatile_fid, &data->fi); + rc = open_cached_dir(xid, tcon, full_path, + cifs_sb, false, &cfid); } - close_cached_dir(cfid); - return rc; + /* If it is a root and its handle is cached then use it */ + if (!rc) { + if (cfid->file_all_info_is_valid) { + memcpy(&data->fi, &cfid->file_all_info, + sizeof(data->fi)); + } else { + rc = SMB2_query_info(xid, tcon, + cfid->fid.persistent_fid, + cfid->fid.volatile_fid, + &data->fi); + } + close_cached_dir(cfid); + return rc; + } + cmds[0] = SMB2_OP_QUERY_INFO; + } else { + cmds[0] = SMB2_OP_POSIX_QUERY_INFO; }
in_iov[0].iov_base = data; @@ -743,6 +759,10 @@ int smb2_query_path_info(const unsigned int xid, switch (rc) { case 0: case -EOPNOTSUPP: + /* + * BB TODO: When support for special files added to Samba + * re-verify this path. + */ rc = parse_create_response(data, cifs_sb, &out_iov[0]); if (rc || !data->reparse_point) goto out; @@ -782,75 +802,6 @@ int smb2_query_path_info(const unsigned int xid, return rc; }
-int smb311_posix_query_path_info(const unsigned int xid, - struct cifs_tcon *tcon, - struct cifs_sb_info *cifs_sb, - const char *full_path, - struct cifs_open_info_data *data) -{ - int rc; - __u32 create_options = 0; - struct cifsFileInfo *cfile; - struct kvec in_iov[2], out_iov[3] = {}; - int out_buftype[3] = {}; - int cmds[2] = { SMB2_OP_POSIX_QUERY_INFO, }; - int i, num_cmds; - - data->adjust_tz = false; - data->reparse_point = false; - - /* - * BB TODO: Add support for using the cached root handle. - * Create SMB2_query_posix_info worker function to do non-compounded query - * when we already have an open file handle for this. For now this is fast enough - * (always using the compounded version). - */ - in_iov[0].iov_base = data; - in_iov[0].iov_len = sizeof(*data); - in_iov[1] = in_iov[0]; - - cifs_get_readable_path(tcon, full_path, &cfile); - rc = smb2_compound_op(xid, tcon, cifs_sb, full_path, - FILE_READ_ATTRIBUTES, FILE_OPEN, - create_options, ACL_NO_MODE, in_iov, - cmds, 1, cfile, out_iov, out_buftype); - /* - * If first iov is unset, then SMB session was dropped or we've got a - * cached open file (@cfile). - */ - if (!out_iov[0].iov_base || out_buftype[0] == CIFS_NO_BUFFER) - goto out; - - switch (rc) { - case 0: - case -EOPNOTSUPP: - /* BB TODO: When support for special files added to Samba re-verify this path */ - rc = parse_create_response(data, cifs_sb, &out_iov[0]); - if (rc || !data->reparse_point) - goto out; - - if (data->reparse.tag == IO_REPARSE_TAG_SYMLINK) { - /* symlink already parsed in create response */ - num_cmds = 1; - } else { - cmds[1] = SMB2_OP_GET_REPARSE; - num_cmds = 2; - } - create_options |= OPEN_REPARSE_POINT; - cifs_get_readable_path(tcon, full_path, &cfile); - rc = smb2_compound_op(xid, tcon, cifs_sb, full_path, - FILE_READ_ATTRIBUTES, FILE_OPEN, - create_options, ACL_NO_MODE, in_iov, - cmds, num_cmds, cfile, NULL, NULL); - break; - } - -out: - for (i = 0; i < ARRAY_SIZE(out_buftype); i++) - free_rsp_buf(out_buftype[i], out_iov[i].iov_base); - return rc; -} - int smb2_mkdir(const unsigned int xid, struct inode *parent_inode, umode_t mode, struct cifs_tcon *tcon, const char *name,