| 1 | /*
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| 2 | * Fake Perms VFS module. Implements passthrough operation of all VFS
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| 3 | * calls to disk functions, except for file permissions, which are now
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| 4 | * mode 0700 for the current uid/gid.
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| 5 | *
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| 6 | * Copyright (C) Tim Potter, 1999-2000
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| 7 | * Copyright (C) Alexander Bokovoy, 2002
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| 8 | * Copyright (C) Andrew Bartlett, 2002
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| 9 | *
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| 10 | * This program is free software; you can redistribute it and/or modify
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| 11 | * it under the terms of the GNU General Public License as published by
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| 12 | * the Free Software Foundation; either version 2 of the License, or
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| 13 | * (at your option) any later version.
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| 14 | *
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| 15 | * This program is distributed in the hope that it will be useful,
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| 16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 18 | * GNU General Public License for more details.
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| 19 | *
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| 20 | * You should have received a copy of the GNU General Public License
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| 21 | * along with this program; if not, write to the Free Software
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| 22 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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| 23 | */
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| 24 |
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| 25 | #include "includes.h"
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| 26 |
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| 27 | extern struct current_user current_user;
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| 28 |
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| 29 | #undef DBGC_CLASS
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| 30 | #define DBGC_CLASS DBGC_VFS
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| 31 |
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| 32 | static int fake_perms_stat(vfs_handle_struct *handle, const char *fname, SMB_STRUCT_STAT *sbuf)
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| 33 | {
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| 34 | int ret = -1;
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| 35 |
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| 36 | ret = SMB_VFS_NEXT_STAT(handle, fname, sbuf);
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| 37 | if (ret == 0) {
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| 38 | if (S_ISDIR(sbuf->st_mode)) {
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| 39 | sbuf->st_mode = S_IFDIR | S_IRWXU;
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| 40 | } else {
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| 41 | sbuf->st_mode = S_IRWXU;
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| 42 | }
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| 43 | sbuf->st_uid = current_user.ut.uid;
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| 44 | sbuf->st_gid = current_user.ut.gid;
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| 45 | }
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| 46 |
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| 47 | return ret;
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| 48 | }
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| 49 |
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| 50 | static int fake_perms_fstat(vfs_handle_struct *handle, files_struct *fsp, int fd, SMB_STRUCT_STAT *sbuf)
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| 51 | {
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| 52 | int ret = -1;
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| 53 |
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| 54 | ret = SMB_VFS_NEXT_FSTAT(handle, fsp, fd, sbuf);
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| 55 | if (ret == 0) {
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| 56 | if (S_ISDIR(sbuf->st_mode)) {
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| 57 | sbuf->st_mode = S_IFDIR | S_IRWXU;
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| 58 | } else {
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| 59 | sbuf->st_mode = S_IRWXU;
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| 60 | }
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| 61 | sbuf->st_uid = current_user.ut.uid;
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| 62 | sbuf->st_gid = current_user.ut.gid;
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| 63 | }
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| 64 | return ret;
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| 65 | }
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| 66 |
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| 67 | /* VFS operations structure */
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| 68 |
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| 69 | static vfs_op_tuple fake_perms_ops[] = {
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| 70 | {SMB_VFS_OP(fake_perms_stat), SMB_VFS_OP_STAT, SMB_VFS_LAYER_TRANSPARENT},
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| 71 | {SMB_VFS_OP(fake_perms_fstat), SMB_VFS_OP_FSTAT, SMB_VFS_LAYER_TRANSPARENT},
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| 72 |
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| 73 | {SMB_VFS_OP(NULL), SMB_VFS_OP_NOOP, SMB_VFS_LAYER_NOOP}
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| 74 | };
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| 75 |
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| 76 | NTSTATUS vfs_fake_perms_init(void);
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| 77 | NTSTATUS vfs_fake_perms_init(void)
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| 78 | {
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| 79 | return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "fake_perms", fake_perms_ops);
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| 80 | }
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