diff options
Diffstat (limited to 'fs/cifs/smb2inode.c')
| -rw-r--r-- | fs/cifs/smb2inode.c | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/fs/cifs/smb2inode.c b/fs/cifs/smb2inode.c index 0a116fc490a9..b9db73687eaa 100644 --- a/fs/cifs/smb2inode.c +++ b/fs/cifs/smb2inode.c @@ -166,6 +166,40 @@ smb2_compound_op(const unsigned int xid, struct cifs_tcon *tcon, trace_smb3_query_info_compound_enter(xid, ses->Suid, tcon->tid, full_path); break; + case SMB2_OP_POSIX_QUERY_INFO: + rqst[num_rqst].rq_iov = &vars->qi_iov[0]; + rqst[num_rqst].rq_nvec = 1; + + if (cfile) + rc = SMB2_query_info_init(tcon, server, + &rqst[num_rqst], + cfile->fid.persistent_fid, + cfile->fid.volatile_fid, + SMB_FIND_FILE_POSIX_INFO, + SMB2_O_INFO_FILE, 0, + /* TBD: fix following to allow for longer SIDs */ + sizeof(struct smb311_posix_qinfo *) + (PATH_MAX * 2) + + (sizeof(struct cifs_sid) * 2), 0, NULL); + else { + rc = SMB2_query_info_init(tcon, server, + &rqst[num_rqst], + COMPOUND_FID, + COMPOUND_FID, + SMB_FIND_FILE_POSIX_INFO, + SMB2_O_INFO_FILE, 0, + sizeof(struct smb311_posix_qinfo *) + (PATH_MAX * 2) + + (sizeof(struct cifs_sid) * 2), 0, NULL); + if (!rc) { + smb2_set_next_command(tcon, &rqst[num_rqst]); + smb2_set_related(&rqst[num_rqst]); + } + } + + if (rc) + goto finished; + num_rqst++; + trace_smb3_posix_query_info_compound_enter(xid, ses->Suid, tcon->tid, full_path); + break; case SMB2_OP_DELETE: trace_smb3_delete_enter(xid, ses->Suid, tcon->tid, full_path); break; @@ -379,6 +413,24 @@ smb2_compound_op(const unsigned int xid, struct cifs_tcon *tcon, trace_smb3_query_info_compound_done(xid, ses->Suid, tcon->tid); break; + case SMB2_OP_POSIX_QUERY_INFO: + if (rc == 0) { + qi_rsp = (struct smb2_query_info_rsp *) + rsp_iov[1].iov_base; + rc = smb2_validate_and_copy_iov( + le16_to_cpu(qi_rsp->OutputBufferOffset), + le32_to_cpu(qi_rsp->OutputBufferLength), + &rsp_iov[1], sizeof(struct smb311_posix_qinfo) /* add SIDs */, ptr); + } + if (rqst[1].rq_iov) + SMB2_query_info_free(&rqst[1]); + if (rqst[2].rq_iov) + SMB2_close_free(&rqst[2]); + if (rc) + trace_smb3_posix_query_info_compound_err(xid, ses->Suid, tcon->tid, rc); + else + trace_smb3_posix_query_info_compound_done(xid, ses->Suid, tcon->tid); + break; case SMB2_OP_DELETE: if (rc) trace_smb3_delete_err(xid, ses->Suid, tcon->tid, rc); @@ -512,6 +564,59 @@ out: 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 smb311_posix_qinfo *data, bool *adjust_tz, bool *symlink) +{ + int rc; + __u32 create_options = 0; + struct cifsFileInfo *cfile; + struct smb311_posix_qinfo *smb2_data; + + *adjust_tz = false; + *symlink = false; + + /* BB TODO: Make struct larger when add support for parsing owner SIDs */ + smb2_data = kzalloc(sizeof(struct smb311_posix_qinfo), + GFP_KERNEL); + if (smb2_data == NULL) + return -ENOMEM; + + /* + * 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). + */ + + 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, smb2_data, SMB2_OP_POSIX_QUERY_INFO, cfile); + if (rc == -EOPNOTSUPP) { + /* BB TODO: When support for special files added to Samba re-verify this path */ + *symlink = true; + create_options |= OPEN_REPARSE_POINT; + + /* Failed on a symbolic link - query a reparse point info */ + rc = smb2_compound_op(xid, tcon, cifs_sb, full_path, + FILE_READ_ATTRIBUTES, FILE_OPEN, + create_options, ACL_NO_MODE, + smb2_data, SMB2_OP_POSIX_QUERY_INFO, NULL); + } + if (rc) + goto out; + + /* TODO: will need to allow for the 2 SIDs when add support for getting owner UID/GID */ + memcpy(data, smb2_data, sizeof(struct smb311_posix_qinfo)); + +out: + kfree(smb2_data); + return rc; +} + int smb2_mkdir(const unsigned int xid, struct inode *parent_inode, umode_t mode, struct cifs_tcon *tcon, const char *name, |