| 1 | /*
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| 2 | * NFS4 ACL handling
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| 3 | *
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| 4 | * Copyright (C) Jim McDonough, 2006
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| 5 | *
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| 6 | * This program is free software; you can redistribute it and/or modify
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| 7 | * it under the terms of the GNU General Public License as published by
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| 8 | * the Free Software Foundation; either version 2 of the License, or
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| 9 | * (at your option) any later version.
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| 10 | *
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| 11 | * This program is distributed in the hope that it will be useful,
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| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 14 | * GNU General Public License for more details.
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| 15 | *
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| 16 | * You should have received a copy of the GNU General Public License
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| 17 | * along with this program; if not, write to the Free Software
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| 18 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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| 19 | */
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| 20 |
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| 21 | #include "includes.h"
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| 22 | #include "nfs4_acls.h"
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| 23 |
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| 24 | #define SMBACL4_PARAM_TYPE_NAME "nfs4"
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| 25 |
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| 26 | #define SMB_ACE4_INT_MAGIC 0x76F8A967
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| 27 | typedef struct _SMB_ACE4_INT_T
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| 28 | {
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| 29 | uint32 magic;
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| 30 | SMB_ACE4PROP_T prop;
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| 31 | void *next;
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| 32 | } SMB_ACE4_INT_T;
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| 33 |
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| 34 | #define SMB_ACL4_INT_MAGIC 0x29A3E792
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| 35 | typedef struct _SMB_ACL4_INT_T
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| 36 | {
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| 37 | uint32 magic;
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| 38 | uint32 naces;
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| 39 | SMB_ACE4_INT_T *first;
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| 40 | SMB_ACE4_INT_T *last;
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| 41 | } SMB_ACL4_INT_T;
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| 42 |
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| 43 | extern struct current_user current_user;
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| 44 | extern int try_chown(connection_struct *conn, const char *fname, uid_t uid, gid_t gid);
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| 45 | extern BOOL unpack_nt_owners(int snum, uid_t *puser, gid_t *pgrp,
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| 46 | uint32 security_info_sent, SEC_DESC *psd);
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| 47 |
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| 48 | static SMB_ACL4_INT_T *get_validated_aclint(SMB4ACL_T *acl)
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| 49 | {
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| 50 | SMB_ACL4_INT_T *aclint = (SMB_ACL4_INT_T *)acl;
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| 51 | if (acl==NULL)
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| 52 | {
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| 53 | DEBUG(2, ("acl is NULL\n"));
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| 54 | errno = EINVAL;
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| 55 | return NULL;
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| 56 | }
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| 57 | if (aclint->magic!=SMB_ACL4_INT_MAGIC)
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| 58 | {
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| 59 | DEBUG(2, ("aclint bad magic 0x%x\n", aclint->magic));
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| 60 | errno = EINVAL;
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| 61 | return NULL;
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| 62 | }
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| 63 | return aclint;
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| 64 | }
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| 65 |
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| 66 | static SMB_ACE4_INT_T *get_validated_aceint(SMB4ACE_T *ace)
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| 67 | {
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| 68 | SMB_ACE4_INT_T *aceint = (SMB_ACE4_INT_T *)ace;
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| 69 | if (ace==NULL)
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| 70 | {
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| 71 | DEBUG(2, ("ace is NULL\n"));
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| 72 | errno = EINVAL;
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| 73 | return NULL;
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| 74 | }
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| 75 | if (aceint->magic!=SMB_ACE4_INT_MAGIC)
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| 76 | {
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| 77 | DEBUG(2, ("aceint bad magic 0x%x\n", aceint->magic));
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| 78 | errno = EINVAL;
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| 79 | return NULL;
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| 80 | }
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| 81 | return aceint;
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| 82 | }
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| 83 |
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| 84 | SMB4ACL_T *smb_create_smb4acl(void)
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| 85 | {
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| 86 | TALLOC_CTX *mem_ctx = main_loop_talloc_get();
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| 87 | SMB_ACL4_INT_T *acl = (SMB_ACL4_INT_T *)TALLOC_SIZE(mem_ctx, sizeof(SMB_ACL4_INT_T));
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| 88 | if (acl==NULL)
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| 89 | {
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| 90 | DEBUG(0, ("TALLOC_SIZE failed\n"));
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| 91 | errno = ENOMEM;
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| 92 | return NULL;
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| 93 | }
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| 94 | memset(acl, 0, sizeof(SMB_ACL4_INT_T));
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| 95 | acl->magic = SMB_ACL4_INT_MAGIC;
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| 96 | /* acl->first, last = NULL not needed */
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| 97 | return (SMB4ACL_T *)acl;
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| 98 | }
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| 99 |
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| 100 | SMB4ACE_T *smb_add_ace4(SMB4ACL_T *acl, SMB_ACE4PROP_T *prop)
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| 101 | {
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| 102 | SMB_ACL4_INT_T *aclint = get_validated_aclint(acl);
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| 103 | TALLOC_CTX *mem_ctx = main_loop_talloc_get();
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| 104 | SMB_ACE4_INT_T *ace;
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| 105 |
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| 106 | ace = (SMB_ACE4_INT_T *)TALLOC_SIZE(mem_ctx, sizeof(SMB_ACE4_INT_T));
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| 107 | if (ace==NULL)
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| 108 | {
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| 109 | DEBUG(0, ("TALLOC_SIZE failed\n"));
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| 110 | errno = ENOMEM;
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| 111 | return NULL;
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| 112 | }
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| 113 | memset(ace, 0, sizeof(SMB_ACE4_INT_T));
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| 114 | ace->magic = SMB_ACE4_INT_MAGIC;
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| 115 | /* ace->next = NULL not needed */
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| 116 | memcpy(&ace->prop, prop, sizeof(SMB_ACE4PROP_T));
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| 117 |
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| 118 | if (aclint->first==NULL)
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| 119 | {
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| 120 | aclint->first = ace;
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| 121 | aclint->last = ace;
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| 122 | } else {
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| 123 | aclint->last->next = (void *)ace;
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| 124 | aclint->last = ace;
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| 125 | }
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| 126 | aclint->naces++;
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| 127 |
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| 128 | return (SMB4ACE_T *)ace;
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| 129 | }
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| 130 |
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| 131 | SMB_ACE4PROP_T *smb_get_ace4(SMB4ACE_T *ace)
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| 132 | {
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| 133 | SMB_ACE4_INT_T *aceint = get_validated_aceint(ace);
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| 134 | if (aceint==NULL)
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| 135 | return NULL;
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| 136 |
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| 137 | return &aceint->prop;
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| 138 | }
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| 139 |
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| 140 | SMB4ACE_T *smb_next_ace4(SMB4ACE_T *ace)
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| 141 | {
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| 142 | SMB_ACE4_INT_T *aceint = get_validated_aceint(ace);
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| 143 | if (aceint==NULL)
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| 144 | return NULL;
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| 145 |
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| 146 | return (SMB4ACE_T *)aceint->next;
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| 147 | }
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| 148 |
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| 149 | SMB4ACE_T *smb_first_ace4(SMB4ACL_T *acl)
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| 150 | {
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| 151 | SMB_ACL4_INT_T *aclint = get_validated_aclint(acl);
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| 152 | if (aclint==NULL)
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| 153 | return NULL;
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| 154 |
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| 155 | return (SMB4ACE_T *)aclint->first;
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| 156 | }
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| 157 |
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| 158 | uint32 smb_get_naces(SMB4ACL_T *acl)
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| 159 | {
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| 160 | SMB_ACL4_INT_T *aclint = get_validated_aclint(acl);
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| 161 | if (aclint==NULL)
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| 162 | return 0;
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| 163 |
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| 164 | return aclint->naces;
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| 165 | }
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| 166 |
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| 167 | static int smbacl4_GetFileOwner(files_struct *fsp, SMB_STRUCT_STAT *psbuf)
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| 168 | {
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| 169 | memset(psbuf, 0, sizeof(SMB_STRUCT_STAT));
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| 170 | if (fsp->is_directory || fsp->fh->fd == -1) {
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| 171 | /* Get the stat struct for the owner info. */
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| 172 | if (SMB_VFS_STAT(fsp->conn,fsp->fsp_name, psbuf) != 0)
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| 173 | {
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| 174 | DEBUG(8, ("SMB_VFS_STAT failed with error %s\n",
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| 175 | strerror(errno)));
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| 176 | return -1;
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| 177 | }
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| 178 | } else {
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| 179 | if (SMB_VFS_FSTAT(fsp,fsp->fh->fd, psbuf) != 0)
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| 180 | {
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| 181 | DEBUG(8, ("SMB_VFS_FSTAT failed with error %s\n",
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| 182 | strerror(errno)));
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| 183 | return -1;
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| 184 | }
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| 185 | }
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| 186 |
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| 187 | return 0;
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| 188 | }
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| 189 |
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| 190 | static BOOL smbacl4_nfs42win(SMB4ACL_T *acl, /* in */
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| 191 | DOM_SID *psid_owner, /* in */
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| 192 | DOM_SID *psid_group, /* in */
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| 193 | SEC_ACE **ppnt_ace_list, /* out */
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| 194 | int *pgood_aces /* out */
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| 195 | )
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| 196 | {
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| 197 | SMB_ACL4_INT_T *aclint = (SMB_ACL4_INT_T *)acl;
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| 198 | SMB_ACE4_INT_T *aceint;
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| 199 | SEC_ACE *nt_ace_list = NULL;
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| 200 | int good_aces = 0;
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| 201 | TALLOC_CTX *mem_ctx = main_loop_talloc_get();
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| 202 |
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| 203 | DEBUG(10, ("smbacl_nfs42win entered"));
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| 204 |
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| 205 | aclint = get_validated_aclint(acl);
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| 206 | if (aclint==NULL)
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| 207 | return False;
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| 208 |
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| 209 | if (aclint->naces) {
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| 210 | nt_ace_list = (SEC_ACE *)TALLOC_SIZE(mem_ctx, aclint->naces * sizeof(SEC_ACE));
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| 211 | if (nt_ace_list==NULL)
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| 212 | {
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| 213 | DEBUG(10, ("talloc error"));
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| 214 | errno = ENOMEM;
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| 215 | return False;
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| 216 | }
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| 217 | memset(nt_ace_list, 0, aclint->naces * sizeof(SEC_ACE));
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| 218 | } else {
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| 219 | nt_ace_list = NULL;
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| 220 | }
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| 221 |
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| 222 | for (aceint=aclint->first; aceint!=NULL; aceint=(SMB_ACE4_INT_T *)aceint->next) {
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| 223 | SEC_ACCESS mask;
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| 224 | DOM_SID sid;
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| 225 | SMB_ACE4PROP_T *ace = &aceint->prop;
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| 226 |
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| 227 | DEBUG(10, ("magic: 0x%x, type: %d, iflags: %x, flags: %x, mask: %x, "
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| 228 | "who: %d\n", aceint->magic, ace->aceType, ace->flags,
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| 229 | ace->aceFlags, ace->aceMask, ace->who.id));
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| 230 |
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| 231 | SMB_ASSERT(aceint->magic==SMB_ACE4_INT_MAGIC);
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| 232 |
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| 233 | if (ace->flags & SMB_ACE4_ID_SPECIAL) {
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| 234 | switch (ace->who.special_id) {
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| 235 | case SMB_ACE4_WHO_OWNER:
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| 236 | sid_copy(&sid, psid_owner);
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| 237 | break;
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| 238 | case SMB_ACE4_WHO_GROUP:
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| 239 | sid_copy(&sid, psid_group);
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| 240 | break;
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| 241 | case SMB_ACE4_WHO_EVERYONE:
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| 242 | sid_copy(&sid, &global_sid_World);
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| 243 | break;
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| 244 | default:
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| 245 | DEBUG(8, ("invalid special who id %d "
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| 246 | "ignored\n", ace->who.special_id));
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| 247 | }
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| 248 | } else {
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| 249 | if (ace->aceFlags & SMB_ACE4_IDENTIFIER_GROUP) {
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| 250 | gid_to_sid(&sid, ace->who.gid);
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| 251 | } else {
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| 252 | uid_to_sid(&sid, ace->who.uid);
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| 253 | }
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| 254 | }
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| 255 | DEBUG(10, ("mapped %d to %s\n", ace->who.id,
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| 256 | sid_string_static(&sid)));
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| 257 |
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| 258 | init_sec_access(&mask, ace->aceMask);
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| 259 | init_sec_ace(&nt_ace_list[good_aces++], &sid,
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| 260 | ace->aceType, mask,
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| 261 | ace->aceFlags & 0xf);
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| 262 | }
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| 263 |
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| 264 | *ppnt_ace_list = nt_ace_list;
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| 265 | *pgood_aces = good_aces;
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| 266 |
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| 267 | return True;
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| 268 | }
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| 269 |
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| 270 | size_t smb_get_nt_acl_nfs4(files_struct *fsp,
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| 271 | uint32 security_info,
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| 272 | SEC_DESC **ppdesc, SMB4ACL_T *acl)
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| 273 | {
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| 274 | int good_aces = 0;
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| 275 | SMB_STRUCT_STAT sbuf;
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| 276 | DOM_SID sid_owner, sid_group;
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| 277 | size_t sd_size = 0;
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| 278 | SEC_ACE *nt_ace_list = NULL;
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| 279 | SEC_ACL *psa = NULL;
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| 280 | TALLOC_CTX *mem_ctx = main_loop_talloc_get();
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| 281 |
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| 282 | DEBUG(10, ("smb_get_nt_acl_nfs4 invoked for %s\n", fsp->fsp_name));
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| 283 |
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| 284 | if (acl==NULL || smb_get_naces(acl)==0)
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| 285 | return 0; /* special because we shouldn't alloc 0 for win */
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| 286 |
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| 287 | if (smbacl4_GetFileOwner(fsp, &sbuf))
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| 288 | return 0;
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| 289 |
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| 290 | uid_to_sid(&sid_owner, sbuf.st_uid);
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| 291 | gid_to_sid(&sid_group, sbuf.st_gid);
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| 292 |
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| 293 | if (smbacl4_nfs42win(acl,
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| 294 | &sid_owner,
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| 295 | &sid_group,
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| 296 | &nt_ace_list,
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| 297 | &good_aces
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| 298 | )==False) {
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| 299 | DEBUG(8,("smbacl4_nfs42win failed\n"));
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| 300 | return 0;
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| 301 | }
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| 302 |
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| 303 | psa = make_sec_acl(mem_ctx, NT4_ACL_REVISION,
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| 304 | good_aces, nt_ace_list);
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| 305 | if (psa == NULL) {
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| 306 | DEBUG(2,("make_sec_acl failed\n"));
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| 307 | return 0;
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| 308 | }
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| 309 |
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| 310 | DEBUG(10,("after make sec_acl\n"));
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| 311 | *ppdesc = make_sec_desc(mem_ctx, SEC_DESC_REVISION,
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| 312 | SEC_DESC_SELF_RELATIVE,
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| 313 | (security_info & OWNER_SECURITY_INFORMATION)
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| 314 | ? &sid_owner : NULL,
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| 315 | (security_info & GROUP_SECURITY_INFORMATION)
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| 316 | ? &sid_group : NULL,
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| 317 | NULL, psa, &sd_size);
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| 318 | if (*ppdesc==NULL) {
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| 319 | DEBUG(2,("make_sec_desc failed\n"));
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| 320 | return 0;
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| 321 | }
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| 322 |
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| 323 | DEBUG(10, ("smb_get_nt_acl_nfs4 successfully exited with sd_size %d\n", sd_size));
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| 324 | return sd_size;
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| 325 | }
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| 326 |
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| 327 | enum smbacl4_mode_enum {e_simple=0, e_special=1};
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| 328 | enum smbacl4_acedup_enum {e_dontcare=0, e_reject=1, e_ignore=2, e_merge=3};
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| 329 |
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| 330 | typedef struct _smbacl4_vfs_params {
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| 331 | enum smbacl4_mode_enum mode;
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| 332 | BOOL do_chown;
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| 333 | enum smbacl4_acedup_enum acedup;
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| 334 | } smbacl4_vfs_params;
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| 335 |
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| 336 | /*
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| 337 | * Gather special parameters for NFS4 ACL handling
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| 338 | */
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| 339 | static int smbacl4_get_vfs_params(
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| 340 | const char *type_name,
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| 341 | files_struct *fsp,
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| 342 | smbacl4_vfs_params *params
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| 343 | )
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| 344 | {
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| 345 | static const struct enum_list enum_smbacl4_modes[] = {
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| 346 | { e_simple, "simple" },
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| 347 | { e_special, "special" }
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| 348 | };
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| 349 | static const struct enum_list enum_smbacl4_acedups[] = {
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| 350 | { e_dontcare, "dontcare" },
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| 351 | { e_reject, "reject" },
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| 352 | { e_ignore, "ignore" },
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| 353 | { e_merge, "merge" },
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| 354 | };
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| 355 |
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| 356 | memset(params, 0, sizeof(smbacl4_vfs_params));
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| 357 | params->mode = (enum smbacl4_mode_enum)lp_parm_enum(
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| 358 | SNUM(fsp->conn), type_name,
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| 359 | "mode", enum_smbacl4_modes, e_simple);
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| 360 | params->do_chown = lp_parm_bool(SNUM(fsp->conn), type_name,
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| 361 | "chown", True);
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| 362 | params->acedup = (enum smbacl4_acedup_enum)lp_parm_enum(
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| 363 | SNUM(fsp->conn), type_name,
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| 364 | "acedup", enum_smbacl4_acedups, e_dontcare);
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| 365 |
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| 366 | DEBUG(10, ("mode:%s, do_chown:%s, acedup: %s\n",
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| 367 | enum_smbacl4_modes[params->mode].name,
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| 368 | params->do_chown ? "true" : "false",
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| 369 | enum_smbacl4_acedups[params->acedup].name));
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| 370 |
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| 371 | return 0;
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| 372 | }
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| 373 |
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| 374 | static void smbacl4_dump_nfs4acl(int level, SMB4ACL_T *acl)
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| 375 | {
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| 376 | SMB_ACL4_INT_T *aclint = get_validated_aclint(acl);
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| 377 | SMB_ACE4_INT_T *aceint;
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| 378 |
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| 379 | DEBUG(level, ("NFS4ACL: size=%d\n", aclint->naces));
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| 380 |
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| 381 | for(aceint = aclint->first; aceint!=NULL; aceint=(SMB_ACE4_INT_T *)aceint->next) {
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| 382 | SMB_ACE4PROP_T *ace = &aceint->prop;
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| 383 |
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| 384 | DEBUG(level, ("\tACE: type=%d, flags=0x%x, fflags=0x%x, mask=0x%x, id=%d\n",
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| 385 | ace->aceType,
|
|---|
| 386 | ace->aceFlags, ace->flags,
|
|---|
| 387 | ace->aceMask,
|
|---|
| 388 | ace->who.id));
|
|---|
| 389 | }
|
|---|
| 390 | }
|
|---|
| 391 |
|
|---|
| 392 | /*
|
|---|
| 393 | * Find 2 NFS4 who-special ACE property (non-copy!!!)
|
|---|
| 394 | * match nonzero if "special" and who is equal
|
|---|
| 395 | * return ace if found matching; otherwise NULL
|
|---|
| 396 | */
|
|---|
| 397 | static SMB_ACE4PROP_T *smbacl4_find_equal_special(
|
|---|
| 398 | SMB4ACL_T *acl,
|
|---|
| 399 | SMB_ACE4PROP_T *aceNew)
|
|---|
| 400 | {
|
|---|
| 401 | SMB_ACL4_INT_T *aclint = get_validated_aclint(acl);
|
|---|
| 402 | SMB_ACE4_INT_T *aceint;
|
|---|
| 403 |
|
|---|
| 404 | for(aceint = aclint->first; aceint!=NULL; aceint=(SMB_ACE4_INT_T *)aceint->next) {
|
|---|
| 405 | SMB_ACE4PROP_T *ace = &aceint->prop;
|
|---|
| 406 |
|
|---|
| 407 | if (ace->flags == aceNew->flags &&
|
|---|
| 408 | ace->aceType==aceNew->aceType &&
|
|---|
| 409 | (ace->aceFlags&SMB_ACE4_IDENTIFIER_GROUP)==
|
|---|
| 410 | (aceNew->aceFlags&SMB_ACE4_IDENTIFIER_GROUP)
|
|---|
| 411 | ) {
|
|---|
| 412 | /* keep type safety; e.g. gid is an u.short */
|
|---|
| 413 | if (ace->flags & SMB_ACE4_ID_SPECIAL)
|
|---|
| 414 | {
|
|---|
| 415 | if (ace->who.special_id==aceNew->who.special_id)
|
|---|
| 416 | return ace;
|
|---|
| 417 | } else {
|
|---|
| 418 | if (ace->aceFlags & SMB_ACE4_IDENTIFIER_GROUP)
|
|---|
| 419 | {
|
|---|
| 420 | if (ace->who.gid==aceNew->who.gid)
|
|---|
| 421 | return ace;
|
|---|
| 422 | } else {
|
|---|
| 423 | if (ace->who.uid==aceNew->who.uid)
|
|---|
| 424 | return ace;
|
|---|
| 425 | }
|
|---|
| 426 | }
|
|---|
| 427 | }
|
|---|
| 428 | }
|
|---|
| 429 |
|
|---|
| 430 | return NULL;
|
|---|
| 431 | }
|
|---|
| 432 |
|
|---|
| 433 | static int smbacl4_fill_ace4(
|
|---|
| 434 | TALLOC_CTX *mem_ctx,
|
|---|
| 435 | smbacl4_vfs_params *params,
|
|---|
| 436 | uid_t ownerUID,
|
|---|
| 437 | gid_t ownerGID,
|
|---|
| 438 | SEC_ACE *ace_nt, /* input */
|
|---|
| 439 | SMB_ACE4PROP_T *ace_v4 /* output */
|
|---|
| 440 | )
|
|---|
| 441 | {
|
|---|
| 442 | const char *dom, *name;
|
|---|
| 443 | enum lsa_SidType type;
|
|---|
| 444 | uid_t uid;
|
|---|
| 445 | gid_t gid;
|
|---|
| 446 |
|
|---|
| 447 | DEBUG(10, ("got ace for %s\n",
|
|---|
| 448 | sid_string_static(&ace_nt->trustee)));
|
|---|
| 449 |
|
|---|
| 450 | memset(ace_v4, 0, sizeof(SMB_ACE4PROP_T));
|
|---|
| 451 | ace_v4->aceType = ace_nt->type; /* only ACCES|DENY supported right now */
|
|---|
| 452 | ace_v4->aceFlags = ace_nt->flags & SEC_ACE_FLAG_VALID_INHERIT;
|
|---|
| 453 | ace_v4->aceMask = ace_nt->access_mask &
|
|---|
| 454 | (STD_RIGHT_ALL_ACCESS | SA_RIGHT_FILE_ALL_ACCESS);
|
|---|
| 455 |
|
|---|
| 456 | if (ace_v4->aceFlags!=ace_nt->flags)
|
|---|
| 457 | DEBUG(9, ("ace_v4->aceFlags(0x%x)!=ace_nt->flags(0x%x)\n",
|
|---|
| 458 | ace_v4->aceFlags, ace_nt->flags));
|
|---|
| 459 |
|
|---|
| 460 | if (ace_v4->aceMask!=ace_nt->access_mask)
|
|---|
| 461 | DEBUG(9, ("ace_v4->aceMask(0x%x)!=ace_nt->access_mask(0x%x)\n",
|
|---|
| 462 | ace_v4->aceMask, ace_nt->access_mask));
|
|---|
| 463 |
|
|---|
| 464 | if (sid_equal(&ace_nt->trustee, &global_sid_World)) {
|
|---|
| 465 | ace_v4->who.special_id = SMB_ACE4_WHO_EVERYONE;
|
|---|
| 466 | ace_v4->flags |= SMB_ACE4_ID_SPECIAL;
|
|---|
| 467 | } else {
|
|---|
| 468 | if (!lookup_sid(mem_ctx, &ace_nt->trustee, &dom, &name, &type)) {
|
|---|
| 469 | DEBUG(8, ("Could not find %s' type\n",
|
|---|
| 470 | sid_string_static(&ace_nt->trustee)));
|
|---|
| 471 | errno = EINVAL;
|
|---|
| 472 | return -1;
|
|---|
| 473 | }
|
|---|
| 474 |
|
|---|
| 475 | if (type == SID_NAME_USER) {
|
|---|
| 476 | if (!sid_to_uid(&ace_nt->trustee, &uid)) {
|
|---|
| 477 | DEBUG(2, ("Could not convert %s to uid\n",
|
|---|
| 478 | sid_string_static(&ace_nt->trustee)));
|
|---|
| 479 | return -1;
|
|---|
| 480 | }
|
|---|
| 481 |
|
|---|
| 482 | if (params->mode==e_special && uid==ownerUID) {
|
|---|
| 483 | ace_v4->flags |= SMB_ACE4_ID_SPECIAL;
|
|---|
| 484 | ace_v4->who.special_id = SMB_ACE4_WHO_OWNER;
|
|---|
| 485 | } else {
|
|---|
| 486 | ace_v4->who.uid = uid;
|
|---|
| 487 | }
|
|---|
| 488 | } else { /* else group? - TODO check it... */
|
|---|
| 489 | if (!sid_to_gid(&ace_nt->trustee, &gid)) {
|
|---|
| 490 | DEBUG(2, ("Could not convert %s to gid\n",
|
|---|
| 491 | sid_string_static(&ace_nt->trustee)));
|
|---|
| 492 | return -1;
|
|---|
| 493 | }
|
|---|
| 494 | ace_v4->aceFlags |= SMB_ACE4_IDENTIFIER_GROUP;
|
|---|
| 495 |
|
|---|
| 496 | if (params->mode==e_special && gid==ownerGID) {
|
|---|
| 497 | ace_v4->flags |= SMB_ACE4_ID_SPECIAL;
|
|---|
| 498 | ace_v4->who.special_id = SMB_ACE4_WHO_GROUP;
|
|---|
| 499 | } else {
|
|---|
| 500 | ace_v4->who.gid = gid;
|
|---|
| 501 | }
|
|---|
| 502 | }
|
|---|
| 503 | }
|
|---|
| 504 |
|
|---|
| 505 | return 0; /* OK */
|
|---|
| 506 | }
|
|---|
| 507 |
|
|---|
| 508 | static int smbacl4_MergeIgnoreReject(
|
|---|
| 509 | enum smbacl4_acedup_enum acedup,
|
|---|
| 510 | SMB4ACL_T *acl, /* may modify it */
|
|---|
| 511 | SMB_ACE4PROP_T *ace, /* the "new" ACE */
|
|---|
| 512 | BOOL *paddNewACE,
|
|---|
| 513 | int i
|
|---|
| 514 | )
|
|---|
| 515 | {
|
|---|
| 516 | int result = 0;
|
|---|
| 517 | SMB_ACE4PROP_T *ace4found = smbacl4_find_equal_special(acl, ace);
|
|---|
| 518 | if (ace4found)
|
|---|
| 519 | {
|
|---|
| 520 | switch(acedup)
|
|---|
| 521 | {
|
|---|
| 522 | case e_merge: /* "merge" flags */
|
|---|
| 523 | *paddNewACE = False;
|
|---|
| 524 | ace4found->aceFlags |= ace->aceFlags;
|
|---|
| 525 | ace4found->aceMask |= ace->aceMask;
|
|---|
| 526 | break;
|
|---|
| 527 | case e_ignore: /* leave out this record */
|
|---|
| 528 | *paddNewACE = False;
|
|---|
| 529 | break;
|
|---|
| 530 | case e_reject: /* do an error */
|
|---|
| 531 | DEBUG(8, ("ACL rejected by duplicate nt ace#%d\n", i));
|
|---|
| 532 | errno = EINVAL; /* SHOULD be set on any _real_ error */
|
|---|
| 533 | result = -1;
|
|---|
| 534 | break;
|
|---|
| 535 | default:
|
|---|
| 536 | break;
|
|---|
| 537 | }
|
|---|
| 538 | }
|
|---|
| 539 | return result;
|
|---|
| 540 | }
|
|---|
| 541 |
|
|---|
| 542 | static SMB4ACL_T *smbacl4_win2nfs4(
|
|---|
| 543 | SEC_ACL *dacl,
|
|---|
| 544 | smbacl4_vfs_params *pparams,
|
|---|
| 545 | uid_t ownerUID,
|
|---|
| 546 | gid_t ownerGID
|
|---|
| 547 | )
|
|---|
| 548 | {
|
|---|
| 549 | SMB4ACL_T *acl;
|
|---|
| 550 | uint32 i;
|
|---|
| 551 | TALLOC_CTX *mem_ctx = main_loop_talloc_get();
|
|---|
| 552 |
|
|---|
| 553 | DEBUG(10, ("smbacl4_win2nfs4 invoked\n"));
|
|---|
| 554 |
|
|---|
| 555 | acl = smb_create_smb4acl();
|
|---|
| 556 | if (acl==NULL)
|
|---|
| 557 | return NULL;
|
|---|
| 558 |
|
|---|
| 559 | for(i=0; i<dacl->num_aces; i++) {
|
|---|
| 560 | SMB_ACE4PROP_T ace_v4;
|
|---|
| 561 | BOOL addNewACE = True;
|
|---|
| 562 |
|
|---|
| 563 | if (smbacl4_fill_ace4(mem_ctx, pparams, ownerUID, ownerGID,
|
|---|
| 564 | dacl->aces + i, &ace_v4))
|
|---|
| 565 | return NULL;
|
|---|
| 566 |
|
|---|
| 567 | if (pparams->acedup!=e_dontcare) {
|
|---|
| 568 | if (smbacl4_MergeIgnoreReject(pparams->acedup, acl,
|
|---|
| 569 | &ace_v4, &addNewACE, i))
|
|---|
| 570 | return NULL;
|
|---|
| 571 | }
|
|---|
| 572 |
|
|---|
| 573 | if (addNewACE)
|
|---|
| 574 | smb_add_ace4(acl, &ace_v4);
|
|---|
| 575 | }
|
|---|
| 576 |
|
|---|
| 577 | return acl;
|
|---|
| 578 | }
|
|---|
| 579 |
|
|---|
| 580 | BOOL smb_set_nt_acl_nfs4(files_struct *fsp,
|
|---|
| 581 | uint32 security_info_sent,
|
|---|
| 582 | SEC_DESC *psd,
|
|---|
| 583 | set_nfs4acl_native_fn_t set_nfs4_native)
|
|---|
| 584 | {
|
|---|
| 585 | smbacl4_vfs_params params;
|
|---|
| 586 | SMB4ACL_T *acl = NULL;
|
|---|
| 587 | BOOL result;
|
|---|
| 588 |
|
|---|
| 589 | SMB_STRUCT_STAT sbuf;
|
|---|
| 590 | BOOL need_chown = False;
|
|---|
| 591 | uid_t newUID = (uid_t)-1;
|
|---|
| 592 | gid_t newGID = (gid_t)-1;
|
|---|
| 593 |
|
|---|
| 594 | DEBUG(10, ("smb_set_nt_acl_nfs4 invoked for %s\n", fsp->fsp_name));
|
|---|
| 595 |
|
|---|
| 596 | if ((security_info_sent & (DACL_SECURITY_INFORMATION |
|
|---|
| 597 | GROUP_SECURITY_INFORMATION | OWNER_SECURITY_INFORMATION)) == 0)
|
|---|
| 598 | {
|
|---|
| 599 | DEBUG(9, ("security_info_sent (0x%x) ignored\n",
|
|---|
| 600 | security_info_sent));
|
|---|
| 601 | return True; /* won't show error - later to be refined... */
|
|---|
| 602 | }
|
|---|
| 603 |
|
|---|
| 604 | /* Special behaviours */
|
|---|
| 605 | if (smbacl4_get_vfs_params(SMBACL4_PARAM_TYPE_NAME, fsp, ¶ms))
|
|---|
| 606 | return False;
|
|---|
| 607 |
|
|---|
| 608 | if (smbacl4_GetFileOwner(fsp, &sbuf))
|
|---|
| 609 | return False;
|
|---|
| 610 |
|
|---|
| 611 | if (params.do_chown) {
|
|---|
| 612 | /* chown logic is a copy/paste from posix_acl.c:set_nt_acl */
|
|---|
| 613 | if (!unpack_nt_owners(SNUM(fsp->conn), &newUID, &newGID, security_info_sent, psd))
|
|---|
| 614 | {
|
|---|
| 615 | DEBUG(8, ("unpack_nt_owners failed"));
|
|---|
| 616 | return False;
|
|---|
| 617 | }
|
|---|
| 618 | if (((newUID != (uid_t)-1) && (sbuf.st_uid != newUID)) ||
|
|---|
| 619 | ((newGID != (gid_t)-1) && (sbuf.st_gid != newGID))) {
|
|---|
| 620 | need_chown = True;
|
|---|
| 621 | }
|
|---|
| 622 | if (need_chown) {
|
|---|
| 623 | if ((newUID == (uid_t)-1 || newUID == current_user.ut.uid)) {
|
|---|
| 624 | if(try_chown(fsp->conn, fsp->fsp_name, newUID, newGID)) {
|
|---|
| 625 | DEBUG(3,("chown %s, %u, %u failed. Error = %s.\n",
|
|---|
| 626 | fsp->fsp_name, (unsigned int)newUID, (unsigned int)newGID, strerror(errno) ));
|
|---|
| 627 | return False;
|
|---|
| 628 | }
|
|---|
| 629 | DEBUG(10,("chown %s, %u, %u succeeded.\n",
|
|---|
| 630 | fsp->fsp_name, (unsigned int)newUID, (unsigned int)newGID));
|
|---|
| 631 | if (smbacl4_GetFileOwner(fsp, &sbuf))
|
|---|
| 632 | return False;
|
|---|
| 633 | need_chown = False;
|
|---|
| 634 | } else { /* chown is needed, but _after_ changing acl */
|
|---|
| 635 | sbuf.st_uid = newUID; /* OWNER@ in case of e_special */
|
|---|
| 636 | sbuf.st_gid = newGID; /* GROUP@ in case of e_special */
|
|---|
| 637 | }
|
|---|
| 638 | }
|
|---|
| 639 | }
|
|---|
| 640 |
|
|---|
| 641 | if ((security_info_sent & DACL_SECURITY_INFORMATION)!=0 && psd->dacl!=NULL)
|
|---|
| 642 | {
|
|---|
| 643 | acl = smbacl4_win2nfs4(psd->dacl, ¶ms, sbuf.st_uid, sbuf.st_gid);
|
|---|
| 644 | if (!acl)
|
|---|
| 645 | return False;
|
|---|
| 646 |
|
|---|
| 647 | smbacl4_dump_nfs4acl(10, acl);
|
|---|
| 648 |
|
|---|
| 649 | result = set_nfs4_native(fsp, acl);
|
|---|
| 650 | if (result!=True)
|
|---|
| 651 | {
|
|---|
| 652 | DEBUG(10, ("set_nfs4_native failed with %s\n", strerror(errno)));
|
|---|
| 653 | return False;
|
|---|
| 654 | }
|
|---|
| 655 | } else
|
|---|
| 656 | DEBUG(10, ("no dacl found; security_info_sent = 0x%x\n", security_info_sent));
|
|---|
| 657 |
|
|---|
| 658 | /* Any chown pending? */
|
|---|
| 659 | if (need_chown) {
|
|---|
| 660 | DEBUG(3,("chown#2 %s. uid = %u, gid = %u.\n",
|
|---|
| 661 | fsp->fsp_name, (unsigned int)newUID, (unsigned int)newGID));
|
|---|
| 662 | if (try_chown(fsp->conn, fsp->fsp_name, newUID, newGID)) {
|
|---|
| 663 | DEBUG(2,("chown#2 %s, %u, %u failed. Error = %s.\n",
|
|---|
| 664 | fsp->fsp_name, (unsigned int)newUID, (unsigned int)newGID,
|
|---|
| 665 | strerror(errno)));
|
|---|
| 666 | return False;
|
|---|
| 667 | }
|
|---|
| 668 | DEBUG(10,("chown#2 %s, %u, %u succeeded.\n",
|
|---|
| 669 | fsp->fsp_name, (unsigned int)newUID, (unsigned int)newGID));
|
|---|
| 670 | }
|
|---|
| 671 |
|
|---|
| 672 | DEBUG(10, ("smb_set_nt_acl_nfs4 succeeded\n"));
|
|---|
| 673 | return True;
|
|---|
| 674 | }
|
|---|