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cifs: rename posix create rsp

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little progress on the posix create response.

* rename struct to create_posix_rsp to match with the request
  create_posix context
* make struct packed
* pass smb info struct for parse_posix_ctxt to fill
* use smb info struct as param
* update TODO

What needs to be done:

SMB2_open() has an optional smb info out argument that it will fill.
Callers making use of this are:

- smb3_query_mf_symlink (need to investigate)
- smb2_open_file

Callers of smb2_open_file (via server->ops->open) are passing an
smbinfo struct but that struct cannot hold POSIX information. All the
call stack needs to be changed for a different info type. Maybe pass
SMB generic struct like cifs_fattr instead.

Signed-off-by: Aurelien Aptel <aaptel@suse.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
This commit is contained in:
Aurelien Aptel 2020-02-08 15:50:56 +01:00 committed by Steve French
parent 8fe0c2c2cb
commit 2e8af978d9
2 changed files with 15 additions and 7 deletions
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13
fs/cifs/smb2pdu.c
View File

@ -1951,13 +1951,18 @@ parse_query_id_ctxt(struct create_context *cc, struct smb2_file_all_info *buf)
}
static void
parse_posix_ctxt(struct create_context *cc, struct smb_posix_info *pposix_inf)
parse_posix_ctxt(struct create_context *cc, struct smb2_file_all_info *info)
{
/* struct smb_posix_info *ppinf = (struct smb_posix_info *)cc; */
/* struct create_posix_rsp *posix = (struct create_posix_rsp *)cc; */
/* TODO: Need to add parsing for the context and return */
/*
* TODO: Need to add parsing for the context and return. Can
* smb2_file_all_info hold POSIX data? Need to change the
* passed type from SMB2_open.
*/
printk_once(KERN_WARNING
"SMB3 3.11 POSIX response context not completed yet\n");
}
void
@ -1995,7 +2000,7 @@ smb2_parse_contexts(struct TCP_Server_Info *server,
parse_query_id_ctxt(cc, buf);
else if ((le16_to_cpu(cc->NameLength) == 16)) {
if (memcmp(name, smb3_create_tag_posix, 16) == 0)
parse_posix_ctxt(cc, NULL);
parse_posix_ctxt(cc, buf);
}
/* else {
cifs_dbg(FYI, "Context not matched with len %d\n",

9
fs/cifs/smb2pdu.h
View File

@ -1604,11 +1604,14 @@ struct smb2_file_id_information {
extern char smb2_padding[7];
/* equivalent of the contents of SMB3.1.1 POSIX open context response */
struct smb_posix_info {
struct create_posix_rsp {
__le32 nlink;
__le32 reparse_tag;
__le32 mode;
kuid_t uid;
kuid_t gid;
/*
* var sized owner SID
* var sized group SID
*/
} __packed;
};
#endif /* _SMB2PDU_H */