| 1 | /*
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| 2 | * Store Windows ACLs in xattrs.
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| 3 | *
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| 4 | * Copyright (C) Volker Lendecke, 2008
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| 5 | * Copyright (C) Jeremy Allison, 2008
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| 6 | *
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| 7 | * This program is free software; you can redistribute it and/or modify
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| 8 | * it under the terms of the GNU General Public License as published by
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| 9 | * the Free Software Foundation; either version 3 of the License, or
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| 10 | * (at your option) any later version.
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| 11 | *
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| 12 | * This program is distributed in the hope that it will be useful,
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| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 15 | * GNU General Public License for more details.
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| 16 | *
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| 17 | * You should have received a copy of the GNU General Public License
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| 18 | * along with this program; if not, see <http://www.gnu.org/licenses/>.
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| 19 | */
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| 20 |
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| 21 | /* NOTE: This is an experimental module, not yet finished. JRA. */
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| 22 |
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| 23 | #include "includes.h"
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| 24 | #include "smbd/smbd.h"
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| 25 | #include "librpc/gen_ndr/xattr.h"
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| 26 | #include "librpc/gen_ndr/ndr_xattr.h"
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| 27 | #include "../lib/crypto/crypto.h"
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| 28 | #include "auth.h"
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| 29 |
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| 30 | #undef DBGC_CLASS
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| 31 | #define DBGC_CLASS DBGC_VFS
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| 32 |
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| 33 | /* Pull in the common functions. */
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| 34 | #define ACL_MODULE_NAME "acl_xattr"
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| 35 |
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| 36 | #include "modules/vfs_acl_common.c"
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| 37 |
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| 38 | /*******************************************************************
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| 39 | Pull a security descriptor into a DATA_BLOB from a xattr.
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| 40 | *******************************************************************/
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| 41 |
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| 42 | static NTSTATUS get_acl_blob(TALLOC_CTX *ctx,
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| 43 | vfs_handle_struct *handle,
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| 44 | files_struct *fsp,
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| 45 | const char *name,
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| 46 | DATA_BLOB *pblob)
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| 47 | {
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| 48 | size_t size = 1024;
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| 49 | uint8_t *val = NULL;
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| 50 | uint8_t *tmp;
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| 51 | ssize_t sizeret;
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| 52 | int saved_errno = 0;
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| 53 |
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| 54 | ZERO_STRUCTP(pblob);
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| 55 |
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| 56 | again:
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| 57 |
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| 58 | tmp = TALLOC_REALLOC_ARRAY(ctx, val, uint8_t, size);
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| 59 | if (tmp == NULL) {
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| 60 | TALLOC_FREE(val);
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| 61 | return NT_STATUS_NO_MEMORY;
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| 62 | }
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| 63 | val = tmp;
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| 64 |
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| 65 | become_root();
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| 66 | if (fsp && fsp->fh->fd != -1) {
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| 67 | sizeret = SMB_VFS_FGETXATTR(fsp, XATTR_NTACL_NAME, val, size);
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| 68 | } else {
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| 69 | sizeret = SMB_VFS_GETXATTR(handle->conn, name,
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| 70 | XATTR_NTACL_NAME, val, size);
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| 71 | }
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| 72 | if (sizeret == -1) {
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