cifs: add passthrough for smb2 setinfo
Add support to send smb2 set-info commands from userspace. Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com> Signed-off-by: Steve French <stfrench@microsoft.com> Reviewed-by: Paulo Alcantara <palcantara@suse.de>
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@ -46,6 +46,7 @@ struct smb_snapshot_array {
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/* query_info flags */
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/* query_info flags */
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#define PASSTHRU_QUERY_INFO 0x00000000
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#define PASSTHRU_QUERY_INFO 0x00000000
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#define PASSTHRU_FSCTL 0x00000001
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#define PASSTHRU_FSCTL 0x00000001
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#define PASSTHRU_SET_INFO 0x00000002
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struct smb_query_info {
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struct smb_query_info {
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__u32 info_type;
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__u32 info_type;
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__u32 file_info_class;
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__u32 file_info_class;
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@ -1369,7 +1369,10 @@ smb2_ioctl_query_info(const unsigned int xid,
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struct cifs_fid fid;
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struct cifs_fid fid;
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struct kvec qi_iov[1];
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struct kvec qi_iov[1];
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struct kvec io_iov[SMB2_IOCTL_IOV_SIZE];
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struct kvec io_iov[SMB2_IOCTL_IOV_SIZE];
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struct kvec si_iov[SMB2_SET_INFO_IOV_SIZE];
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struct kvec close_iov[1];
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struct kvec close_iov[1];
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unsigned int size[2];
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void *data[2];
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memset(rqst, 0, sizeof(rqst));
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memset(rqst, 0, sizeof(rqst));
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resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER;
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resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER;
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@ -1404,7 +1407,6 @@ smb2_ioctl_query_info(const unsigned int xid,
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memset(&oparms, 0, sizeof(oparms));
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memset(&oparms, 0, sizeof(oparms));
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oparms.tcon = tcon;
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oparms.tcon = tcon;
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oparms.desired_access = FILE_READ_ATTRIBUTES | READ_CONTROL;
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oparms.disposition = FILE_OPEN;
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oparms.disposition = FILE_OPEN;
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if (is_dir)
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if (is_dir)
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oparms.create_options = CREATE_NOT_FILE;
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oparms.create_options = CREATE_NOT_FILE;
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@ -1413,9 +1415,6 @@ smb2_ioctl_query_info(const unsigned int xid,
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oparms.fid = &fid;
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oparms.fid = &fid;
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oparms.reconnect = false;
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oparms.reconnect = false;
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/*
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* FSCTL codes encode the special access they need in the fsctl code.
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*/
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if (qi.flags & PASSTHRU_FSCTL) {
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if (qi.flags & PASSTHRU_FSCTL) {
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switch (qi.info_type & FSCTL_DEVICE_ACCESS_MASK) {
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switch (qi.info_type & FSCTL_DEVICE_ACCESS_MASK) {
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case FSCTL_DEVICE_ACCESS_FILE_READ_WRITE_ACCESS:
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case FSCTL_DEVICE_ACCESS_FILE_READ_WRITE_ACCESS:
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@ -1431,6 +1430,10 @@ smb2_ioctl_query_info(const unsigned int xid,
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oparms.desired_access = GENERIC_WRITE;
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oparms.desired_access = GENERIC_WRITE;
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break;
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break;
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}
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}
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} else if (qi.flags & PASSTHRU_SET_INFO) {
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oparms.desired_access = GENERIC_WRITE;
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} else {
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oparms.desired_access = FILE_READ_ATTRIBUTES | READ_CONTROL;
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}
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}
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rc = SMB2_open_init(tcon, &rqst[0], &oplock, &oparms, path);
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rc = SMB2_open_init(tcon, &rqst[0], &oplock, &oparms, path);
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@ -1454,6 +1457,24 @@ smb2_ioctl_query_info(const unsigned int xid,
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qi.output_buffer_length,
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qi.output_buffer_length,
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CIFSMaxBufSize);
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CIFSMaxBufSize);
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}
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}
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} else if (qi.flags == PASSTHRU_SET_INFO) {
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/* Can eventually relax perm check since server enforces too */
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if (!capable(CAP_SYS_ADMIN))
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rc = -EPERM;
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else {
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memset(&si_iov, 0, sizeof(si_iov));
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rqst[1].rq_iov = si_iov;
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rqst[1].rq_nvec = 1;
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size[0] = 8;
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data[0] = buffer;
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rc = SMB2_set_info_init(tcon, &rqst[1],
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COMPOUND_FID, COMPOUND_FID,
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current->tgid,
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FILE_END_OF_FILE_INFORMATION,
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SMB2_O_INFO_FILE, 0, data, size);
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}
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} else if (qi.flags == PASSTHRU_QUERY_INFO) {
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} else if (qi.flags == PASSTHRU_QUERY_INFO) {
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memset(&qi_iov, 0, sizeof(qi_iov));
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memset(&qi_iov, 0, sizeof(qi_iov));
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rqst[1].rq_iov = qi_iov;
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rqst[1].rq_iov = qi_iov;
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