fs/smbsrv/smb2_setinfo_file.c

/*
 * This file and its contents are supplied under the terms of the
 * Common Development and Distribution License ("CDDL"), version 1.0.
 * You may only use this file in accordance with the terms of version
 * 1.0 of the CDDL.
 *
 * A full copy of the text of the CDDL should have accompanied this
 * source.  A copy of the CDDL is also available via the Internet at
 * http://www.illumos.org/license/CDDL.
 */

/*
 * Copyright 2014 Nexenta Systems, Inc.  All rights reserved.
 */

/*
 * Dispatch function for SMB2_SET_INFO
 *
 * [MS-FSCC 2.4] If a file system does not support ...
 * an Information Classs, NT_STATUS_INVALID_PARAMETER...
 */

#include <smbsrv/smb2_kproto.h>
#include <smbsrv/smb_fsops.h>
#include <smbsrv/ntifs.h>

static uint32_t smb2_setf_rename(smb_request_t *, smb_setinfo_t *);
static uint32_t smb2_setf_link(smb_request_t *, smb_setinfo_t *);

static uint32_t smb2_setf_seek(smb_request_t *, smb_setinfo_t *);
static uint32_t smb2_setf_full_ea(smb_request_t *, smb_setinfo_t *);
static uint32_t smb2_setf_mode(smb_request_t *, smb_setinfo_t *);

static uint32_t smb2_setf_pipe(smb_request_t *, smb_setinfo_t *);
static uint32_t smb2_setf_valid_len(smb_request_t *, smb_setinfo_t *);
static uint32_t smb2_setf_shortname(smb_request_t *, smb_setinfo_t *);


uint32_t
smb2_setinfo_file(smb_request_t *sr, smb_setinfo_t *si, int InfoClass)
{
    smb_ofile_t *of = sr->fid_ofile;
    uint32_t status;

    si->si_node = of->f_node;

    switch (InfoClass) {
    case FileBasicInformation:      /* 4 */
        status = smb_set_basic_info(sr, si);
        break;
    case FileRenameInformation:     /* 10 */
        status = smb2_setf_rename(sr, si);
        break;
    case FileLinkInformation:       /* 11 */
        status = smb2_setf_link(sr, si);
        break;
    case FileDispositionInformation:    /* 13 */
        status = smb_set_disposition_info(sr, si);
        break;
    case FilePositionInformation:       /* 14 */
        status = smb2_setf_seek(sr, si);
        break;
    case FileFullEaInformation:     /* 15 */
        status = smb2_setf_full_ea(sr, si);
        break;
    case FileModeInformation:       /* 16 */
        status = smb2_setf_mode(sr, si);
        break;
    case FileAllocationInformation:     /* 19 */
        status = smb_set_alloc_info(sr, si);
        break;
    case FileEndOfFileInformation:      /* 20 */
        status = smb_set_eof_info(sr, si);
        break;
    case FilePipeInformation:       /* 23 */
        status = smb2_setf_pipe(sr, si);
        break;
    case FileValidDataLengthInformation:    /* 39 */
        status = smb2_setf_valid_len(sr, si);
        break;
    case FileShortNameInformation:      /* 40 */
        status = smb2_setf_shortname(sr, si);
        break;
    default:
        status = NT_STATUS_INVALID_INFO_CLASS;
        break;
    }

    return (status);
}


/*
 * FileRenameInformation
 * See also: smb_set_rename_info()
 */
static uint32_t
smb2_setf_rename(smb_request_t *sr, smb_setinfo_t *si)
{
    char *fname;
    uint8_t flags;
    uint64_t rootdir;
    uint32_t namelen;
    uint32_t status = 0;
    int rc;

    rc = smb_mbc_decodef(&si->si_data, "b7.ql",
        &flags, &rootdir, &namelen);
    if (rc == 0) {
        rc = smb_mbc_decodef(&si->si_data, "%#U",
            sr, namelen, &fname);
    }
    if (rc != 0)
        return (NT_STATUS_INFO_LENGTH_MISMATCH);

    if ((rootdir != 0) || (namelen == 0) || (namelen >= SMB_MAXPATHLEN)) {
        return (NT_STATUS_INVALID_PARAMETER);
    }

    status = smb_setinfo_rename(sr, si->si_node, fname, flags);

    return (status);
}

/*
 * FileLinkInformation
 */
static uint32_t
smb2_setf_link(smb_request_t *sr, smb_setinfo_t *si)
{
    char *fname;
    uint8_t flags;
    uint64_t rootdir;
    uint32_t namelen;
    uint32_t status = 0;
    int rc;

    rc = smb_mbc_decodef(&si->si_data, "b7.ql",
        &flags, &rootdir, &namelen);
    if (rc == 0) {
        rc = smb_mbc_decodef(&si->si_data, "%#U",
            sr, namelen, &fname);
    }
    if (rc != 0)
        return (NT_STATUS_INFO_LENGTH_MISMATCH);

    if ((rootdir != 0) || (namelen == 0) || (namelen >= SMB_MAXPATHLEN)) {
        return (NT_STATUS_INVALID_PARAMETER);
    }

    status = smb_setinfo_link(sr, si->si_node, fname, flags);

    return (status);
}


/*
 * FilePositionInformation
 */
static uint32_t
smb2_setf_seek(smb_request_t *sr, smb_setinfo_t *si)
{
    smb_ofile_t *of = sr->fid_ofile;
    uint64_t newoff;

    if (smb_mbc_decodef(&si->si_data, "q", &newoff) != 0)
        return (NT_STATUS_INVALID_PARAMETER);

    ASSERT(of->f_magic == SMB_OFILE_MAGIC);
    mutex_enter(&of->f_mutex);
    of->f_seek_pos = newoff;
    mutex_exit(&of->f_mutex);

    return (0);
}

/*
 * FileFullEaInformation
 * We could put EAs in a named stream...
 */
/* ARGSUSED */
static uint32_t
smb2_setf_full_ea(smb_request_t *sr, smb_setinfo_t *si)
{
    return (NT_STATUS_EAS_NOT_SUPPORTED);
}

/*
 * FileModeInformation [MS-FSCC 2.4.24]
 *  FILE_WRITE_THROUGH
 *  FILE_SEQUENTIAL_ONLY
 *  FILE_NO_INTERMEDIATE_BUFFERING
 *  etc.
 */
static uint32_t
smb2_setf_mode(smb_request_t *sr, smb_setinfo_t *si)
{
    _NOTE(ARGUNUSED(sr))
    uint32_t    Mode;

    if (smb_mbc_decodef(&si->si_data, "l", &Mode) != 0)
        return (NT_STATUS_INVALID_PARAMETER);

#if 0   /* XXX - todo */
    if (Mode & FILE_WRITE_THROUGH) {
        /* store this in the ofile */
    }
#endif

    return (NT_STATUS_SUCCESS);
}


/*
 * FilePipeInformation
 */
static uint32_t
smb2_setf_pipe(smb_request_t *sr, smb_setinfo_t *si)
{
    _NOTE(ARGUNUSED(si))
    smb_ofile_t *of = sr->fid_ofile;
    uint32_t    ReadMode;
    uint32_t    CompletionMode;
    uint32_t    status;

    if (smb_mbc_decodef(&si->si_data, "ll",
        &ReadMode, &CompletionMode) != 0)
        return (NT_STATUS_INFO_LENGTH_MISMATCH);

    switch (of->f_ftype) {
    case SMB_FTYPE_BYTE_PIPE:
    case SMB_FTYPE_MESG_PIPE:
        /*
         * XXX: Do we need to actually do anything with
         * ReadMode or CompletionMode?  If so, (later)
         * store these in the opipe object.
         *
         * See also: smb2_sif_pipe()
         */
        status = 0;
        break;
    case SMB_FTYPE_DISK:
    case SMB_FTYPE_PRINTER:
    default:
        status = NT_STATUS_INVALID_PARAMETER;
    }

    return (status);
}

/*
 * FileValidDataLengthInformation
 */
/* ARGSUSED */
static uint32_t
smb2_setf_valid_len(smb_request_t *sr, smb_setinfo_t *si)
{
    smb_ofile_t *of = sr->fid_ofile;
    uint64_t eod;
    int rc;

    if (smb_mbc_decodef(&si->si_data, "q", &eod) != 0)
        return (NT_STATUS_INFO_LENGTH_MISMATCH);

    rc = smb_fsop_set_data_length(sr, of->f_cr, of->f_node, eod);
    if (rc != 0)
        return (smb_errno2status(rc));

    return (0);
}

/*
 * FileShortNameInformation
 *  We can (optionally) support supply short names,
 *  but you can't change them.
 */
static uint32_t
smb2_setf_shortname(smb_request_t *sr, smb_setinfo_t *si)
{
    _NOTE(ARGUNUSED(si))
    smb_ofile_t *of = sr->fid_ofile;

    if (of->f_ftype != SMB_FTYPE_DISK)
        return (NT_STATUS_INVALID_PARAMETER);
    if ((of->f_tree->t_flags & SMB_TREE_SHORTNAMES) == 0)
        return (NT_STATUS_SHORT_NAMES_NOT_ENABLED_ON_VOLUME);

    return (NT_STATUS_ACCESS_DENIED);
}