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0b62cdbed0
Makes real problems easier to spot. Jeremy.
785 lines
20 KiB
C
785 lines
20 KiB
C
/*
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* NFS4 ACL handling
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*
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* Copyright (C) Jim McDonough, 2006
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include "includes.h"
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#include "nfs4_acls.h"
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#undef DBGC_CLASS
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#define DBGC_CLASS DBGC_ACLS
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#define SMBACL4_PARAM_TYPE_NAME "nfs4"
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extern const struct generic_mapping file_generic_mapping;
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#define SMB_ACE4_INT_MAGIC 0x76F8A967
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typedef struct _SMB_ACE4_INT_T
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{
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uint32 magic;
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SMB_ACE4PROP_T prop;
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void *next;
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} SMB_ACE4_INT_T;
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#define SMB_ACL4_INT_MAGIC 0x29A3E792
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typedef struct _SMB_ACL4_INT_T
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{
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uint32 magic;
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uint32 naces;
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SMB_ACE4_INT_T *first;
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SMB_ACE4_INT_T *last;
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} SMB_ACL4_INT_T;
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static SMB_ACL4_INT_T *get_validated_aclint(SMB4ACL_T *theacl)
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{
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SMB_ACL4_INT_T *aclint = (SMB_ACL4_INT_T *)theacl;
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if (theacl==NULL)
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{
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DEBUG(2, ("acl is NULL\n"));
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errno = EINVAL;
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return NULL;
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}
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if (aclint->magic!=SMB_ACL4_INT_MAGIC)
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{
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DEBUG(2, ("aclint bad magic 0x%x\n", aclint->magic));
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errno = EINVAL;
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return NULL;
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}
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return aclint;
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}
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static SMB_ACE4_INT_T *get_validated_aceint(SMB4ACE_T *ace)
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{
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SMB_ACE4_INT_T *aceint = (SMB_ACE4_INT_T *)ace;
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if (ace==NULL)
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{
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DEBUG(2, ("ace is NULL\n"));
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errno = EINVAL;
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return NULL;
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}
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if (aceint->magic!=SMB_ACE4_INT_MAGIC)
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{
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DEBUG(2, ("aceint bad magic 0x%x\n", aceint->magic));
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errno = EINVAL;
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return NULL;
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}
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return aceint;
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}
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SMB4ACL_T *smb_create_smb4acl(void)
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{
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TALLOC_CTX *mem_ctx = talloc_tos();
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SMB_ACL4_INT_T *theacl = (SMB_ACL4_INT_T *)TALLOC_ZERO_SIZE(mem_ctx, sizeof(SMB_ACL4_INT_T));
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if (theacl==NULL)
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{
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DEBUG(0, ("TALLOC_SIZE failed\n"));
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errno = ENOMEM;
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return NULL;
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}
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theacl->magic = SMB_ACL4_INT_MAGIC;
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/* theacl->first, last = NULL not needed */
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return (SMB4ACL_T *)theacl;
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}
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SMB4ACE_T *smb_add_ace4(SMB4ACL_T *theacl, SMB_ACE4PROP_T *prop)
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{
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SMB_ACL4_INT_T *aclint = get_validated_aclint(theacl);
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TALLOC_CTX *mem_ctx = talloc_tos();
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SMB_ACE4_INT_T *ace;
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ace = (SMB_ACE4_INT_T *)TALLOC_ZERO_SIZE(mem_ctx, sizeof(SMB_ACE4_INT_T));
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if (ace==NULL)
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{
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DEBUG(0, ("TALLOC_SIZE failed\n"));
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errno = ENOMEM;
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return NULL;
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}
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ace->magic = SMB_ACE4_INT_MAGIC;
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/* ace->next = NULL not needed */
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memcpy(&ace->prop, prop, sizeof(SMB_ACE4PROP_T));
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if (aclint->first==NULL)
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{
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aclint->first = ace;
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aclint->last = ace;
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} else {
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aclint->last->next = (void *)ace;
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aclint->last = ace;
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}
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aclint->naces++;
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return (SMB4ACE_T *)ace;
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}
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SMB_ACE4PROP_T *smb_get_ace4(SMB4ACE_T *ace)
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{
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SMB_ACE4_INT_T *aceint = get_validated_aceint(ace);
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if (aceint==NULL)
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return NULL;
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return &aceint->prop;
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}
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SMB4ACE_T *smb_next_ace4(SMB4ACE_T *ace)
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{
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SMB_ACE4_INT_T *aceint = get_validated_aceint(ace);
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if (aceint==NULL)
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return NULL;
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return (SMB4ACE_T *)aceint->next;
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}
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SMB4ACE_T *smb_first_ace4(SMB4ACL_T *theacl)
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{
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SMB_ACL4_INT_T *aclint = get_validated_aclint(theacl);
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if (aclint==NULL)
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return NULL;
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return (SMB4ACE_T *)aclint->first;
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}
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uint32 smb_get_naces(SMB4ACL_T *theacl)
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{
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SMB_ACL4_INT_T *aclint = get_validated_aclint(theacl);
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if (aclint==NULL)
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return 0;
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return aclint->naces;
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}
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static int smbacl4_GetFileOwner(struct connection_struct *conn,
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const char *filename,
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SMB_STRUCT_STAT *psbuf)
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{
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memset(psbuf, 0, sizeof(SMB_STRUCT_STAT));
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/* Get the stat struct for the owner info. */
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if (SMB_VFS_STAT(conn, filename, psbuf) != 0)
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{
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DEBUG(8, ("SMB_VFS_STAT failed with error %s\n",
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strerror(errno)));
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return -1;
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}
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return 0;
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}
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static int smbacl4_fGetFileOwner(files_struct *fsp, SMB_STRUCT_STAT *psbuf)
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{
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memset(psbuf, 0, sizeof(SMB_STRUCT_STAT));
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if (fsp->is_directory || fsp->fh->fd == -1) {
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return smbacl4_GetFileOwner(fsp->conn, fsp->fsp_name, psbuf);
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}
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if (SMB_VFS_FSTAT(fsp, psbuf) != 0)
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{
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DEBUG(8, ("SMB_VFS_FSTAT failed with error %s\n",
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strerror(errno)));
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return -1;
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}
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return 0;
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}
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static bool smbacl4_nfs42win(TALLOC_CTX *mem_ctx, SMB4ACL_T *theacl, /* in */
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DOM_SID *psid_owner, /* in */
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DOM_SID *psid_group, /* in */
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bool is_directory, /* in */
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SEC_ACE **ppnt_ace_list, /* out */
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int *pgood_aces /* out */
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)
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{
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SMB_ACL4_INT_T *aclint = (SMB_ACL4_INT_T *)theacl;
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SMB_ACE4_INT_T *aceint;
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SEC_ACE *nt_ace_list = NULL;
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int good_aces = 0;
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DEBUG(10, ("smbacl_nfs42win entered"));
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aclint = get_validated_aclint(theacl);
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/* We do not check for naces being 0 or theacl being NULL here because it is done upstream */
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/* in smb_get_nt_acl_nfs4(). */
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nt_ace_list = (SEC_ACE *)TALLOC_ZERO_SIZE(mem_ctx, aclint->naces * sizeof(SEC_ACE));
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if (nt_ace_list==NULL)
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{
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DEBUG(10, ("talloc error"));
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errno = ENOMEM;
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return False;
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}
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for (aceint=aclint->first; aceint!=NULL; aceint=(SMB_ACE4_INT_T *)aceint->next) {
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uint32_t mask;
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DOM_SID sid;
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SMB_ACE4PROP_T *ace = &aceint->prop;
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DEBUG(10, ("magic: 0x%x, type: %d, iflags: %x, flags: %x, mask: %x, "
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"who: %d\n", aceint->magic, ace->aceType, ace->flags,
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ace->aceFlags, ace->aceMask, ace->who.id));
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SMB_ASSERT(aceint->magic==SMB_ACE4_INT_MAGIC);
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if (ace->flags & SMB_ACE4_ID_SPECIAL) {
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switch (ace->who.special_id) {
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case SMB_ACE4_WHO_OWNER:
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sid_copy(&sid, psid_owner);
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break;
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case SMB_ACE4_WHO_GROUP:
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sid_copy(&sid, psid_group);
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break;
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case SMB_ACE4_WHO_EVERYONE:
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sid_copy(&sid, &global_sid_World);
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break;
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default:
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DEBUG(8, ("invalid special who id %d "
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"ignored\n", ace->who.special_id));
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}
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} else {
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if (ace->aceFlags & SMB_ACE4_IDENTIFIER_GROUP) {
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gid_to_sid(&sid, ace->who.gid);
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} else {
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uid_to_sid(&sid, ace->who.uid);
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}
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}
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DEBUG(10, ("mapped %d to %s\n", ace->who.id,
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sid_string_dbg(&sid)));
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if (is_directory && (ace->aceMask & SMB_ACE4_ADD_FILE)) {
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ace->aceMask |= SMB_ACE4_DELETE_CHILD;
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}
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mask = ace->aceMask;
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init_sec_ace(&nt_ace_list[good_aces++], &sid,
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ace->aceType, mask,
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ace->aceFlags & 0xf);
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}
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*ppnt_ace_list = nt_ace_list;
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*pgood_aces = good_aces;
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return True;
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}
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static NTSTATUS smb_get_nt_acl_nfs4_common(const SMB_STRUCT_STAT *sbuf,
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uint32 security_info,
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SEC_DESC **ppdesc, SMB4ACL_T *theacl)
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{
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int good_aces = 0;
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DOM_SID sid_owner, sid_group;
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size_t sd_size = 0;
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SEC_ACE *nt_ace_list = NULL;
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SEC_ACL *psa = NULL;
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TALLOC_CTX *mem_ctx = talloc_tos();
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if (theacl==NULL || smb_get_naces(theacl)==0)
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return NT_STATUS_ACCESS_DENIED; /* special because we
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* shouldn't alloc 0 for
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* win */
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uid_to_sid(&sid_owner, sbuf->st_uid);
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gid_to_sid(&sid_group, sbuf->st_gid);
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if (smbacl4_nfs42win(mem_ctx, theacl, &sid_owner, &sid_group, S_ISDIR(sbuf->st_mode),
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&nt_ace_list, &good_aces)==False) {
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DEBUG(8,("smbacl4_nfs42win failed\n"));
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return map_nt_error_from_unix(errno);
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}
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psa = make_sec_acl(mem_ctx, NT4_ACL_REVISION, good_aces, nt_ace_list);
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if (psa == NULL) {
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DEBUG(2,("make_sec_acl failed\n"));
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return NT_STATUS_NO_MEMORY;
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}
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DEBUG(10,("after make sec_acl\n"));
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*ppdesc = make_sec_desc(mem_ctx, SEC_DESC_REVISION, SEC_DESC_SELF_RELATIVE,
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(security_info & OWNER_SECURITY_INFORMATION) ? &sid_owner : NULL,
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(security_info & GROUP_SECURITY_INFORMATION) ? &sid_group : NULL,
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NULL, psa, &sd_size);
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if (*ppdesc==NULL) {
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DEBUG(2,("make_sec_desc failed\n"));
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return NT_STATUS_NO_MEMORY;
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}
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DEBUG(10, ("smb_get_nt_acl_nfs4_common successfully exited with sd_size %d\n",
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ndr_size_security_descriptor(*ppdesc, 0)));
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return NT_STATUS_OK;
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}
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NTSTATUS smb_fget_nt_acl_nfs4(files_struct *fsp,
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uint32 security_info,
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SEC_DESC **ppdesc, SMB4ACL_T *theacl)
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{
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SMB_STRUCT_STAT sbuf;
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DEBUG(10, ("smb_fget_nt_acl_nfs4 invoked for %s\n", fsp->fsp_name));
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if (smbacl4_fGetFileOwner(fsp, &sbuf)) {
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return map_nt_error_from_unix(errno);
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}
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return smb_get_nt_acl_nfs4_common(&sbuf, security_info, ppdesc, theacl);
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}
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NTSTATUS smb_get_nt_acl_nfs4(struct connection_struct *conn,
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const char *name,
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uint32 security_info,
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SEC_DESC **ppdesc, SMB4ACL_T *theacl)
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{
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SMB_STRUCT_STAT sbuf;
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DEBUG(10, ("smb_get_nt_acl_nfs4 invoked for %s\n", name));
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if (smbacl4_GetFileOwner(conn, name, &sbuf)) {
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return map_nt_error_from_unix(errno);
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}
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return smb_get_nt_acl_nfs4_common(&sbuf, security_info, ppdesc, theacl);
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}
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enum smbacl4_mode_enum {e_simple=0, e_special=1};
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enum smbacl4_acedup_enum {e_dontcare=0, e_reject=1, e_ignore=2, e_merge=3};
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typedef struct _smbacl4_vfs_params {
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enum smbacl4_mode_enum mode;
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bool do_chown;
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enum smbacl4_acedup_enum acedup;
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struct db_context *sid_mapping_table;
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} smbacl4_vfs_params;
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/*
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* Gather special parameters for NFS4 ACL handling
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*/
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static int smbacl4_get_vfs_params(
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const char *type_name,
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files_struct *fsp,
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smbacl4_vfs_params *params
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)
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{
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static const struct enum_list enum_smbacl4_modes[] = {
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{ e_simple, "simple" },
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{ e_special, "special" }
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};
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static const struct enum_list enum_smbacl4_acedups[] = {
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{ e_dontcare, "dontcare" },
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{ e_reject, "reject" },
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{ e_ignore, "ignore" },
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{ e_merge, "merge" },
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};
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memset(params, 0, sizeof(smbacl4_vfs_params));
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params->mode = (enum smbacl4_mode_enum)lp_parm_enum(
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SNUM(fsp->conn), type_name,
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"mode", enum_smbacl4_modes, e_simple);
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params->do_chown = lp_parm_bool(SNUM(fsp->conn), type_name,
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"chown", True);
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params->acedup = (enum smbacl4_acedup_enum)lp_parm_enum(
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SNUM(fsp->conn), type_name,
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"acedup", enum_smbacl4_acedups, e_dontcare);
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DEBUG(10, ("mode:%s, do_chown:%s, acedup: %s\n",
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enum_smbacl4_modes[params->mode].name,
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params->do_chown ? "true" : "false",
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enum_smbacl4_acedups[params->acedup].name));
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return 0;
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}
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static void smbacl4_dump_nfs4acl(int level, SMB4ACL_T *theacl)
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{
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SMB_ACL4_INT_T *aclint = get_validated_aclint(theacl);
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SMB_ACE4_INT_T *aceint;
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DEBUG(level, ("NFS4ACL: size=%d\n", aclint->naces));
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for(aceint = aclint->first; aceint!=NULL; aceint=(SMB_ACE4_INT_T *)aceint->next) {
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SMB_ACE4PROP_T *ace = &aceint->prop;
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DEBUG(level, ("\tACE: type=%d, flags=0x%x, fflags=0x%x, mask=0x%x, id=%d\n",
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ace->aceType,
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ace->aceFlags, ace->flags,
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ace->aceMask,
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ace->who.id));
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}
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}
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/*
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* Find 2 NFS4 who-special ACE property (non-copy!!!)
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* match nonzero if "special" and who is equal
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* return ace if found matching; otherwise NULL
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*/
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static SMB_ACE4PROP_T *smbacl4_find_equal_special(
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SMB4ACL_T *theacl,
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SMB_ACE4PROP_T *aceNew)
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{
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SMB_ACL4_INT_T *aclint = get_validated_aclint(theacl);
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SMB_ACE4_INT_T *aceint;
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for(aceint = aclint->first; aceint!=NULL; aceint=(SMB_ACE4_INT_T *)aceint->next) {
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SMB_ACE4PROP_T *ace = &aceint->prop;
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if (ace->flags == aceNew->flags &&
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ace->aceType==aceNew->aceType &&
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(ace->aceFlags&SMB_ACE4_IDENTIFIER_GROUP)==
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(aceNew->aceFlags&SMB_ACE4_IDENTIFIER_GROUP)
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) {
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/* keep type safety; e.g. gid is an u.short */
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if (ace->flags & SMB_ACE4_ID_SPECIAL)
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{
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if (ace->who.special_id==aceNew->who.special_id)
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return ace;
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} else {
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if (ace->aceFlags & SMB_ACE4_IDENTIFIER_GROUP)
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{
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if (ace->who.gid==aceNew->who.gid)
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return ace;
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} else {
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if (ace->who.uid==aceNew->who.uid)
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return ace;
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}
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}
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}
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}
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return NULL;
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}
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static bool nfs4_map_sid(smbacl4_vfs_params *params, const DOM_SID *src,
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DOM_SID *dst)
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{
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static struct db_context *mapping_db = NULL;
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TDB_DATA data;
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if (mapping_db == NULL) {
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const char *dbname = lp_parm_const_string(
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-1, SMBACL4_PARAM_TYPE_NAME, "sidmap", NULL);
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if (dbname == NULL) {
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DEBUG(10, ("%s:sidmap not defined\n",
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SMBACL4_PARAM_TYPE_NAME));
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return False;
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}
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|
become_root();
|
|
mapping_db = db_open(NULL, dbname, 0, TDB_DEFAULT,
|
|
O_RDONLY, 0600);
|
|
unbecome_root();
|
|
|
|
if (mapping_db == NULL) {
|
|
DEBUG(1, ("could not open sidmap: %s\n",
|
|
strerror(errno)));
|
|
return False;
|
|
}
|
|
}
|
|
|
|
if (mapping_db->fetch(mapping_db, NULL,
|
|
string_term_tdb_data(sid_string_tos(src)),
|
|
&data) == -1) {
|
|
DEBUG(10, ("could not find mapping for SID %s\n",
|
|
sid_string_dbg(src)));
|
|
return False;
|
|
}
|
|
|
|
if ((data.dptr == NULL) || (data.dsize <= 0)
|
|
|| (data.dptr[data.dsize-1] != '\0')) {
|
|
DEBUG(5, ("invalid mapping for SID %s\n",
|
|
sid_string_dbg(src)));
|
|
TALLOC_FREE(data.dptr);
|
|
return False;
|
|
}
|
|
|
|
if (!string_to_sid(dst, (char *)data.dptr)) {
|
|
DEBUG(1, ("invalid mapping %s for SID %s\n",
|
|
(char *)data.dptr, sid_string_dbg(src)));
|
|
TALLOC_FREE(data.dptr);
|
|
return False;
|
|
}
|
|
|
|
TALLOC_FREE(data.dptr);
|
|
|
|
return True;
|
|
}
|
|
|
|
static bool smbacl4_fill_ace4(
|
|
TALLOC_CTX *mem_ctx,
|
|
const char *filename,
|
|
smbacl4_vfs_params *params,
|
|
uid_t ownerUID,
|
|
gid_t ownerGID,
|
|
const SEC_ACE *ace_nt, /* input */
|
|
SMB_ACE4PROP_T *ace_v4 /* output */
|
|
)
|
|
{
|
|
DEBUG(10, ("got ace for %s\n", sid_string_dbg(&ace_nt->trustee)));
|
|
|
|
memset(ace_v4, 0, sizeof(SMB_ACE4PROP_T));
|
|
ace_v4->aceType = ace_nt->type; /* only ACCESS|DENY supported right now */
|
|
ace_v4->aceFlags = ace_nt->flags & SEC_ACE_FLAG_VALID_INHERIT;
|
|
ace_v4->aceMask = ace_nt->access_mask &
|
|
(STD_RIGHT_ALL_ACCESS | SA_RIGHT_FILE_ALL_ACCESS);
|
|
|
|
se_map_generic(&ace_v4->aceMask, &file_generic_mapping);
|
|
|
|
if (ace_v4->aceFlags!=ace_nt->flags)
|
|
DEBUG(9, ("ace_v4->aceFlags(0x%x)!=ace_nt->flags(0x%x)\n",
|
|
ace_v4->aceFlags, ace_nt->flags));
|
|
|
|
if (ace_v4->aceMask!=ace_nt->access_mask)
|
|
DEBUG(9, ("ace_v4->aceMask(0x%x)!=ace_nt->access_mask(0x%x)\n",
|
|
ace_v4->aceMask, ace_nt->access_mask));
|
|
|
|
if (sid_equal(&ace_nt->trustee, &global_sid_World)) {
|
|
ace_v4->who.special_id = SMB_ACE4_WHO_EVERYONE;
|
|
ace_v4->flags |= SMB_ACE4_ID_SPECIAL;
|
|
} else {
|
|
const char *dom, *name;
|
|
enum lsa_SidType type;
|
|
uid_t uid;
|
|
gid_t gid;
|
|
DOM_SID sid;
|
|
|
|
sid_copy(&sid, &ace_nt->trustee);
|
|
|
|
if (!lookup_sid(mem_ctx, &sid, &dom, &name, &type)) {
|
|
|
|
DOM_SID mapped;
|
|
|
|
if (!nfs4_map_sid(params, &sid, &mapped)) {
|
|
DEBUG(1, ("nfs4_acls.c: file [%s]: SID %s "
|
|
"unknown\n", filename, sid_string_dbg(&sid)));
|
|
errno = EINVAL;
|
|
return False;
|
|
}
|
|
|
|
DEBUG(2, ("nfs4_acls.c: file [%s]: mapped SID %s "
|
|
"to %s\n", filename, sid_string_dbg(&sid), sid_string_dbg(&mapped)));
|
|
|
|
if (!lookup_sid(mem_ctx, &mapped, &dom,
|
|
&name, &type)) {
|
|
DEBUG(1, ("nfs4_acls.c: file [%s]: SID %s "
|
|
"mapped from %s is unknown\n",
|
|
filename, sid_string_dbg(&mapped), sid_string_dbg(&sid)));
|
|
errno = EINVAL;
|
|
return False;
|
|
}
|
|
|
|
sid_copy(&sid, &mapped);
|
|
}
|
|
|
|
if (type == SID_NAME_USER) {
|
|
if (!sid_to_uid(&sid, &uid)) {
|
|
DEBUG(1, ("nfs4_acls.c: file [%s]: could not "
|
|
"convert %s to uid\n", filename,
|
|
sid_string_dbg(&sid)));
|
|
return False;
|
|
}
|
|
|
|
if (params->mode==e_special && uid==ownerUID) {
|
|
ace_v4->flags |= SMB_ACE4_ID_SPECIAL;
|
|
ace_v4->who.special_id = SMB_ACE4_WHO_OWNER;
|
|
} else {
|
|
ace_v4->who.uid = uid;
|
|
}
|
|
} else { /* else group? - TODO check it... */
|
|
if (!sid_to_gid(&sid, &gid)) {
|
|
DEBUG(1, ("nfs4_acls.c: file [%s]: could not "
|
|
"convert %s to gid\n", filename,
|
|
sid_string_dbg(&sid)));
|
|
return False;
|
|
}
|
|
|
|
ace_v4->aceFlags |= SMB_ACE4_IDENTIFIER_GROUP;
|
|
|
|
if (params->mode==e_special && gid==ownerGID) {
|
|
ace_v4->flags |= SMB_ACE4_ID_SPECIAL;
|
|
ace_v4->who.special_id = SMB_ACE4_WHO_GROUP;
|
|
} else {
|
|
ace_v4->who.gid = gid;
|
|
}
|
|
}
|
|
}
|
|
|
|
return True; /* OK */
|
|
}
|
|
|
|
static int smbacl4_MergeIgnoreReject(
|
|
enum smbacl4_acedup_enum acedup,
|
|
SMB4ACL_T *theacl, /* may modify it */
|
|
SMB_ACE4PROP_T *ace, /* the "new" ACE */
|
|
bool *paddNewACE,
|
|
int i
|
|
)
|
|
{
|
|
int result = 0;
|
|
SMB_ACE4PROP_T *ace4found = smbacl4_find_equal_special(theacl, ace);
|
|
if (ace4found)
|
|
{
|
|
switch(acedup)
|
|
{
|
|
case e_merge: /* "merge" flags */
|
|
*paddNewACE = False;
|
|
ace4found->aceFlags |= ace->aceFlags;
|
|
ace4found->aceMask |= ace->aceMask;
|
|
break;
|
|
case e_ignore: /* leave out this record */
|
|
*paddNewACE = False;
|
|
break;
|
|
case e_reject: /* do an error */
|
|
DEBUG(8, ("ACL rejected by duplicate nt ace#%d\n", i));
|
|
errno = EINVAL; /* SHOULD be set on any _real_ error */
|
|
result = -1;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
static SMB4ACL_T *smbacl4_win2nfs4(
|
|
const char *filename,
|
|
const SEC_ACL *dacl,
|
|
smbacl4_vfs_params *pparams,
|
|
uid_t ownerUID,
|
|
gid_t ownerGID
|
|
)
|
|
{
|
|
SMB4ACL_T *theacl;
|
|
uint32 i;
|
|
TALLOC_CTX *mem_ctx = talloc_tos();
|
|
|
|
DEBUG(10, ("smbacl4_win2nfs4 invoked\n"));
|
|
|
|
theacl = smb_create_smb4acl();
|
|
if (theacl==NULL)
|
|
return NULL;
|
|
|
|
for(i=0; i<dacl->num_aces; i++) {
|
|
SMB_ACE4PROP_T ace_v4;
|
|
bool addNewACE = True;
|
|
|
|
if (!smbacl4_fill_ace4(mem_ctx, filename, pparams,
|
|
ownerUID, ownerGID,
|
|
dacl->aces + i, &ace_v4)) {
|
|
DEBUG(3, ("Could not fill ace for file %s, SID %s\n",
|
|
filename,
|
|
sid_string_dbg(&((dacl->aces+i)->trustee))));
|
|
continue;
|
|
}
|
|
|
|
if (pparams->acedup!=e_dontcare) {
|
|
if (smbacl4_MergeIgnoreReject(pparams->acedup, theacl,
|
|
&ace_v4, &addNewACE, i))
|
|
return NULL;
|
|
}
|
|
|
|
if (addNewACE)
|
|
smb_add_ace4(theacl, &ace_v4);
|
|
}
|
|
|
|
return theacl;
|
|
}
|
|
|
|
NTSTATUS smb_set_nt_acl_nfs4(files_struct *fsp,
|
|
uint32 security_info_sent,
|
|
const SEC_DESC *psd,
|
|
set_nfs4acl_native_fn_t set_nfs4_native)
|
|
{
|
|
smbacl4_vfs_params params;
|
|
SMB4ACL_T *theacl = NULL;
|
|
bool result;
|
|
|
|
SMB_STRUCT_STAT sbuf;
|
|
bool set_acl_as_root = false;
|
|
uid_t newUID = (uid_t)-1;
|
|
gid_t newGID = (gid_t)-1;
|
|
int saved_errno;
|
|
|
|
DEBUG(10, ("smb_set_nt_acl_nfs4 invoked for %s\n", fsp->fsp_name));
|
|
|
|
if ((security_info_sent & (DACL_SECURITY_INFORMATION |
|
|
GROUP_SECURITY_INFORMATION | OWNER_SECURITY_INFORMATION)) == 0)
|
|
{
|
|
DEBUG(9, ("security_info_sent (0x%x) ignored\n",
|
|
security_info_sent));
|
|
return NT_STATUS_OK; /* won't show error - later to be refined... */
|
|
}
|
|
|
|
/* Special behaviours */
|
|
if (smbacl4_get_vfs_params(SMBACL4_PARAM_TYPE_NAME, fsp, ¶ms))
|
|
return NT_STATUS_NO_MEMORY;
|
|
|
|
if (smbacl4_fGetFileOwner(fsp, &sbuf))
|
|
return map_nt_error_from_unix(errno);
|
|
|
|
if (params.do_chown) {
|
|
/* chown logic is a copy/paste from posix_acl.c:set_nt_acl */
|
|
NTSTATUS status = unpack_nt_owners(SNUM(fsp->conn), &newUID, &newGID, security_info_sent, psd);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DEBUG(8, ("unpack_nt_owners failed"));
|
|
return status;
|
|
}
|
|
if (((newUID != (uid_t)-1) && (sbuf.st_uid != newUID)) ||
|
|
((newGID != (gid_t)-1) && (sbuf.st_gid != newGID))) {
|
|
if(try_chown(fsp->conn, fsp->fsp_name, newUID, newGID)) {
|
|
DEBUG(3,("chown %s, %u, %u failed. Error = %s.\n",
|
|
fsp->fsp_name, (unsigned int)newUID, (unsigned int)newGID,
|
|
strerror(errno)));
|
|
return map_nt_error_from_unix(errno);
|
|
}
|
|
|
|
DEBUG(10,("chown %s, %u, %u succeeded.\n",
|
|
fsp->fsp_name, (unsigned int)newUID, (unsigned int)newGID));
|
|
if (smbacl4_GetFileOwner(fsp->conn, fsp->fsp_name, &sbuf))
|
|
return map_nt_error_from_unix(errno);
|
|
|
|
/* If we successfully chowned, we know we must
|
|
* be able to set the acl, so do it as root.
|
|
*/
|
|
set_acl_as_root = true;
|
|
}
|
|
}
|
|
|
|
if (!(security_info_sent & DACL_SECURITY_INFORMATION) || psd->dacl ==NULL) {
|
|
DEBUG(10, ("no dacl found; security_info_sent = 0x%x\n", security_info_sent));
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
theacl = smbacl4_win2nfs4(fsp->fsp_name, psd->dacl, ¶ms, sbuf.st_uid, sbuf.st_gid);
|
|
if (!theacl)
|
|
return map_nt_error_from_unix(errno);
|
|
|
|
smbacl4_dump_nfs4acl(10, theacl);
|
|
|
|
if (set_acl_as_root) {
|
|
become_root();
|
|
}
|
|
result = set_nfs4_native(fsp, theacl);
|
|
saved_errno = errno;
|
|
if (set_acl_as_root) {
|
|
unbecome_root();
|
|
}
|
|
if (result!=True) {
|
|
errno = saved_errno;
|
|
DEBUG(10, ("set_nfs4_native failed with %s\n", strerror(errno)));
|
|
return map_nt_error_from_unix(errno);
|
|
}
|
|
|
|
DEBUG(10, ("smb_set_nt_acl_nfs4 succeeded\n"));
|
|
return NT_STATUS_OK;
|
|
}
|