+/*
+ * NFS4 ACL handling
+ *
+ * Copyright (C) Jim McDonough, 2006
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "includes.h"
+#include "nfs4_acls.h"
+
+#undef DBGC_CLASS
+#define DBGC_CLASS DBGC_ACLS
+
+#define SMBACL4_PARAM_TYPE_NAME "nfs4"
+
+extern const struct generic_mapping file_generic_mapping;
+
+#define SMB_ACE4_INT_MAGIC 0x76F8A967
+typedef struct _SMB_ACE4_INT_T
+{
+ uint32 magic;
+ SMB_ACE4PROP_T prop;
+ void *next;
+} SMB_ACE4_INT_T;
+
+#define SMB_ACL4_INT_MAGIC 0x29A3E792
+typedef struct _SMB_ACL4_INT_T
+{
+ uint32 magic;
+ uint32 naces;
+ SMB_ACE4_INT_T *first;
+ SMB_ACE4_INT_T *last;
+} SMB_ACL4_INT_T;
+
+static SMB_ACL4_INT_T *get_validated_aclint(SMB4ACL_T *acl)
+{
+ SMB_ACL4_INT_T *aclint = (SMB_ACL4_INT_T *)acl;
+ if (acl==NULL)
+ {
+ DEBUG(2, ("acl is NULL\n"));
+ errno = EINVAL;
+ return NULL;
+ }
+ if (aclint->magic!=SMB_ACL4_INT_MAGIC)
+ {
+ DEBUG(2, ("aclint bad magic 0x%x\n", aclint->magic));
+ errno = EINVAL;
+ return NULL;
+ }
+ return aclint;
+}
+
+static SMB_ACE4_INT_T *get_validated_aceint(SMB4ACE_T *ace)
+{
+ SMB_ACE4_INT_T *aceint = (SMB_ACE4_INT_T *)ace;
+ if (ace==NULL)
+ {
+ DEBUG(2, ("ace is NULL\n"));
+ errno = EINVAL;
+ return NULL;
+ }
+ if (aceint->magic!=SMB_ACE4_INT_MAGIC)
+ {
+ DEBUG(2, ("aceint bad magic 0x%x\n", aceint->magic));
+ errno = EINVAL;
+ return NULL;
+ }
+ return aceint;
+}
+
+SMB4ACL_T *smb_create_smb4acl(void)
+{
+ TALLOC_CTX *mem_ctx = talloc_tos();
+ SMB_ACL4_INT_T *acl = (SMB_ACL4_INT_T *)TALLOC_ZERO_SIZE(mem_ctx, sizeof(SMB_ACL4_INT_T));
+ if (acl==NULL)
+ {
+ DEBUG(0, ("TALLOC_SIZE failed\n"));
+ errno = ENOMEM;
+ return NULL;
+ }
+ acl->magic = SMB_ACL4_INT_MAGIC;
+ /* acl->first, last = NULL not needed */
+ return (SMB4ACL_T *)acl;
+}
+
+SMB4ACE_T *smb_add_ace4(SMB4ACL_T *acl, SMB_ACE4PROP_T *prop)
+{
+ SMB_ACL4_INT_T *aclint = get_validated_aclint(acl);
+ TALLOC_CTX *mem_ctx = talloc_tos();
+ SMB_ACE4_INT_T *ace;
+
+ ace = (SMB_ACE4_INT_T *)TALLOC_ZERO_SIZE(mem_ctx, sizeof(SMB_ACE4_INT_T));
+ if (ace==NULL)
+ {
+ DEBUG(0, ("TALLOC_SIZE failed\n"));
+ errno = ENOMEM;
+ return NULL;
+ }
+ ace->magic = SMB_ACE4_INT_MAGIC;
+ /* ace->next = NULL not needed */
+ memcpy(&ace->prop, prop, sizeof(SMB_ACE4PROP_T));
+
+ if (aclint->first==NULL)
+ {
+ aclint->first = ace;
+ aclint->last = ace;
+ } else {
+ aclint->last->next = (void *)ace;
+ aclint->last = ace;
+ }
+ aclint->naces++;
+
+ return (SMB4ACE_T *)ace;
+}
+
+SMB_ACE4PROP_T *smb_get_ace4(SMB4ACE_T *ace)
+{
+ SMB_ACE4_INT_T *aceint = get_validated_aceint(ace);
+ if (aceint==NULL)
+ return NULL;
+
+ return &aceint->prop;
+}
+
+SMB4ACE_T *smb_next_ace4(SMB4ACE_T *ace)
+{
+ SMB_ACE4_INT_T *aceint = get_validated_aceint(ace);
+ if (aceint==NULL)
+ return NULL;
+
+ return (SMB4ACE_T *)aceint->next;
+}
+
+SMB4ACE_T *smb_first_ace4(SMB4ACL_T *acl)
+{
+ SMB_ACL4_INT_T *aclint = get_validated_aclint(acl);
+ if (aclint==NULL)
+ return NULL;
+
+ return (SMB4ACE_T *)aclint->first;
+}
+
+uint32 smb_get_naces(SMB4ACL_T *acl)
+{
+ SMB_ACL4_INT_T *aclint = get_validated_aclint(acl);
+ if (aclint==NULL)
+ return 0;
+
+ return aclint->naces;
+}
+
+static int smbacl4_GetFileOwner(struct connection_struct *conn,
+ const char *filename,
+ SMB_STRUCT_STAT *psbuf)
+{
+ memset(psbuf, 0, sizeof(SMB_STRUCT_STAT));
+
+ /* Get the stat struct for the owner info. */
+ if (SMB_VFS_STAT(conn, filename, psbuf) != 0)
+ {
+ DEBUG(8, ("SMB_VFS_STAT failed with error %s\n",
+ strerror(errno)));
+ return -1;
+ }
+
+ return 0;
+}
+
+static int smbacl4_fGetFileOwner(files_struct *fsp, SMB_STRUCT_STAT *psbuf)
+{
+ memset(psbuf, 0, sizeof(SMB_STRUCT_STAT));
+
+ if (fsp->is_directory || fsp->fh->fd == -1) {
+ return smbacl4_GetFileOwner(fsp->conn, fsp->fsp_name, psbuf);
+ }
+ if (SMB_VFS_FSTAT(fsp, psbuf) != 0)
+ {
+ DEBUG(8, ("SMB_VFS_FSTAT failed with error %s\n",
+ strerror(errno)));
+ return -1;
+ }
+
+ return 0;
+}
+
+static bool smbacl4_nfs42win(TALLOC_CTX *mem_ctx, SMB4ACL_T *acl, /* in */
+ DOM_SID *psid_owner, /* in */
+ DOM_SID *psid_group, /* in */
+ SEC_ACE **ppnt_ace_list, /* out */
+ int *pgood_aces /* out */
+)
+{
+ SMB_ACL4_INT_T *aclint = (SMB_ACL4_INT_T *)acl;
+ SMB_ACE4_INT_T *aceint;
+ SEC_ACE *nt_ace_list = NULL;
+ int good_aces = 0;
+
+ DEBUG(10, ("smbacl_nfs42win entered"));
+
+ aclint = get_validated_aclint(acl);
+ /* We do not check for naces being 0 or acl being NULL here because it is done upstream */
+ /* in smb_get_nt_acl_nfs4(). */
+ nt_ace_list = (SEC_ACE *)TALLOC_ZERO_SIZE(mem_ctx, aclint->naces * sizeof(SEC_ACE));
+ if (nt_ace_list==NULL)
+ {
+ DEBUG(10, ("talloc error"));
+ errno = ENOMEM;
+ return False;
+ }
+
+ for (aceint=aclint->first; aceint!=NULL; aceint=(SMB_ACE4_INT_T *)aceint->next) {
+ SEC_ACCESS mask;
+ DOM_SID sid;
+ SMB_ACE4PROP_T *ace = &aceint->prop;
+
+ DEBUG(10, ("magic: 0x%x, type: %d, iflags: %x, flags: %x, mask: %x, "
+ "who: %d\n", aceint->magic, ace->aceType, ace->flags,
+ ace->aceFlags, ace->aceMask, ace->who.id));
+
+ SMB_ASSERT(aceint->magic==SMB_ACE4_INT_MAGIC);
+
+ if (ace->flags & SMB_ACE4_ID_SPECIAL) {
+ switch (ace->who.special_id) {
+ case SMB_ACE4_WHO_OWNER:
+ sid_copy(&sid, psid_owner);
+ break;
+ case SMB_ACE4_WHO_GROUP:
+ sid_copy(&sid, psid_group);
+ break;
+ case SMB_ACE4_WHO_EVERYONE:
+ sid_copy(&sid, &global_sid_World);
+ break;
+ default:
+ DEBUG(8, ("invalid special who id %d "
+ "ignored\n", ace->who.special_id));
+ }
+ } else {
+ if (ace->aceFlags & SMB_ACE4_IDENTIFIER_GROUP) {
+ gid_to_sid(&sid, ace->who.gid);
+ } else {
+ uid_to_sid(&sid, ace->who.uid);
+ }
+ }
+ DEBUG(10, ("mapped %d to %s\n", ace->who.id,
+ sid_string_dbg(&sid)));
+
+ init_sec_access(&mask, ace->aceMask);
+ init_sec_ace(&nt_ace_list[good_aces++], &sid,
+ ace->aceType, mask,
+ ace->aceFlags & 0xf);
+ }
+
+ *ppnt_ace_list = nt_ace_list;
+ *pgood_aces = good_aces;
+
+ return True;
+}
+
+static NTSTATUS smb_get_nt_acl_nfs4_common(const SMB_STRUCT_STAT *sbuf,
+ uint32 security_info,
+ SEC_DESC **ppdesc, SMB4ACL_T *acl)
+{
+ int good_aces = 0;
+ DOM_SID sid_owner, sid_group;
+ size_t sd_size = 0;
+ SEC_ACE *nt_ace_list = NULL;
+ SEC_ACL *psa = NULL;
+ TALLOC_CTX *mem_ctx = talloc_tos();
+
+ if (acl==NULL || smb_get_naces(acl)==0)
+ return NT_STATUS_ACCESS_DENIED; /* special because we
+ * shouldn't alloc 0 for
+ * win */
+
+ uid_to_sid(&sid_owner, sbuf->st_uid);
+ gid_to_sid(&sid_group, sbuf->st_gid);
+
+ if (smbacl4_nfs42win(mem_ctx, acl, &sid_owner, &sid_group, &nt_ace_list, &good_aces)==False) {
+ DEBUG(8,("smbacl4_nfs42win failed\n"));
+ return map_nt_error_from_unix(errno);
+ }
+
+ psa = make_sec_acl(mem_ctx, NT4_ACL_REVISION, good_aces, nt_ace_list);
+ if (psa == NULL) {
+ DEBUG(2,("make_sec_acl failed\n"));
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ DEBUG(10,("after make sec_acl\n"));
+ *ppdesc = make_sec_desc(mem_ctx, SEC_DESC_REVISION, SEC_DESC_SELF_RELATIVE,
+ (security_info & OWNER_SECURITY_INFORMATION) ? &sid_owner : NULL,
+ (security_info & GROUP_SECURITY_INFORMATION) ? &sid_group : NULL,
+ NULL, psa, &sd_size);
+ if (*ppdesc==NULL) {
+ DEBUG(2,("make_sec_desc failed\n"));
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ DEBUG(10, ("smb_get_nt_acl_nfs4_common successfully exited with sd_size %d\n",
+ ndr_size_security_descriptor(*ppdesc, 0)));
+
+ return NT_STATUS_OK;
+}
+
+NTSTATUS smb_fget_nt_acl_nfs4(files_struct *fsp,
+ uint32 security_info,
+ SEC_DESC **ppdesc, SMB4ACL_T *acl)
+{
+ SMB_STRUCT_STAT sbuf;
+
+ DEBUG(10, ("smb_fget_nt_acl_nfs4 invoked for %s\n", fsp->fsp_name));
+
+ if (smbacl4_fGetFileOwner(fsp, &sbuf)) {
+ return map_nt_error_from_unix(errno);
+ }
+
+ return smb_get_nt_acl_nfs4_common(&sbuf, security_info, ppdesc, acl);
+}
+
+NTSTATUS smb_get_nt_acl_nfs4(struct connection_struct *conn,
+ const char *name,
+ uint32 security_info,
+ SEC_DESC **ppdesc, SMB4ACL_T *acl)
+{
+ SMB_STRUCT_STAT sbuf;
+
+ DEBUG(10, ("smb_get_nt_acl_nfs4 invoked for %s\n", name));
+
+ if (smbacl4_GetFileOwner(conn, name, &sbuf)) {
+ return map_nt_error_from_unix(errno);
+ }
+
+ return smb_get_nt_acl_nfs4_common(&sbuf, security_info, ppdesc, acl);
+}
+
+enum smbacl4_mode_enum {e_simple=0, e_special=1};
+enum smbacl4_acedup_enum {e_dontcare=0, e_reject=1, e_ignore=2, e_merge=3};
+
+typedef struct _smbacl4_vfs_params {
+ enum smbacl4_mode_enum mode;
+ bool do_chown;
+ enum smbacl4_acedup_enum acedup;
+ struct db_context *sid_mapping_table;
+} smbacl4_vfs_params;
+
+/*
+ * Gather special parameters for NFS4 ACL handling
+ */
+static int smbacl4_get_vfs_params(
+ const char *type_name,
+ files_struct *fsp,
+ smbacl4_vfs_params *params
+)
+{
+ static const struct enum_list enum_smbacl4_modes[] = {
+ { e_simple, "simple" },
+ { e_special, "special" }
+ };
+ static const struct enum_list enum_smbacl4_acedups[] = {
+ { e_dontcare, "dontcare" },
+ { e_reject, "reject" },
+ { e_ignore, "ignore" },
+ { e_merge, "merge" },
+ };
+
+ memset(params, 0, sizeof(smbacl4_vfs_params));
+ params->mode = (enum smbacl4_mode_enum)lp_parm_enum(
+ SNUM(fsp->conn), type_name,
+ "mode", enum_smbacl4_modes, e_simple);
+ params->do_chown = lp_parm_bool(SNUM(fsp->conn), type_name,
+ "chown", True);
+ params->acedup = (enum smbacl4_acedup_enum)lp_parm_enum(
+ SNUM(fsp->conn), type_name,
+ "acedup", enum_smbacl4_acedups, e_dontcare);
+
+ DEBUG(10, ("mode:%s, do_chown:%s, acedup: %s\n",
+ enum_smbacl4_modes[params->mode].name,
+ params->do_chown ? "true" : "false",
+ enum_smbacl4_acedups[params->acedup].name));
+
+ return 0;
+}
+
+static void smbacl4_dump_nfs4acl(int level, SMB4ACL_T *acl)
+{
+ SMB_ACL4_INT_T *aclint = get_validated_aclint(acl);
+ SMB_ACE4_INT_T *aceint;
+
+ DEBUG(level, ("NFS4ACL: size=%d\n", aclint->naces));
+
+ for(aceint = aclint->first; aceint!=NULL; aceint=(SMB_ACE4_INT_T *)aceint->next) {
+ SMB_ACE4PROP_T *ace = &aceint->prop;
+
+ DEBUG(level, ("\tACE: type=%d, flags=0x%x, fflags=0x%x, mask=0x%x, id=%d\n",
+ ace->aceType,
+ ace->aceFlags, ace->flags,
+ ace->aceMask,
+ ace->who.id));
+ }
+}
+
+/*
+ * Find 2 NFS4 who-special ACE property (non-copy!!!)
+ * match nonzero if "special" and who is equal
+ * return ace if found matching; otherwise NULL
+ */
+static SMB_ACE4PROP_T *smbacl4_find_equal_special(
+ SMB4ACL_T *acl,
+ SMB_ACE4PROP_T *aceNew)
+{
+ SMB_ACL4_INT_T *aclint = get_validated_aclint(acl);
+ SMB_ACE4_INT_T *aceint;
+
+ for(aceint = aclint->first; aceint!=NULL; aceint=(SMB_ACE4_INT_T *)aceint->next) {
+ SMB_ACE4PROP_T *ace = &aceint->prop;
+
+ if (ace->flags == aceNew->flags &&
+ ace->aceType==aceNew->aceType &&
+ (ace->aceFlags&SMB_ACE4_IDENTIFIER_GROUP)==
+ (aceNew->aceFlags&SMB_ACE4_IDENTIFIER_GROUP)
+ ) {
+ /* keep type safety; e.g. gid is an u.short */
+ if (ace->flags & SMB_ACE4_ID_SPECIAL)
+ {
+ if (ace->who.special_id==aceNew->who.special_id)
+ return ace;
+ } else {
+ if (ace->aceFlags & SMB_ACE4_IDENTIFIER_GROUP)
+ {
+ if (ace->who.gid==aceNew->who.gid)
+ return ace;
+ } else {
+ if (ace->who.uid==aceNew->who.uid)
+ return ace;
+ }
+ }
+ }
+ }
+
+ return NULL;
+}
+
+static bool nfs4_map_sid(smbacl4_vfs_params *params, const DOM_SID *src,
+ DOM_SID *dst)
+{
+ static struct db_context *mapping_db = NULL;
+ TDB_DATA data;
+
+ if (mapping_db == NULL) {
+ const char *dbname = lp_parm_const_string(
+ -1, SMBACL4_PARAM_TYPE_NAME, "sidmap", NULL);
+
+ if (dbname == NULL) {
+ DEBUG(10, ("%s:sidmap not defined\n",
+ SMBACL4_PARAM_TYPE_NAME));
+ return False;
+ }
+
+ 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 *acl, /* 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(acl, 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 *acl;
+ uint32 i;
+ TALLOC_CTX *mem_ctx = talloc_tos();
+
+ DEBUG(10, ("smbacl4_win2nfs4 invoked\n"));
+
+ acl = smb_create_smb4acl();
+ if (acl==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, acl,
+ &ace_v4, &addNewACE, i))
+ return NULL;
+ }
+
+ if (addNewACE)
+ smb_add_ace4(acl, &ace_v4);
+ }
+
+ return acl;
+}
+
+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 *acl = NULL;
+ bool result;
+
+ SMB_STRUCT_STAT sbuf;
+ bool need_chown = False;
+ uid_t newUID = (uid_t)-1;
+ gid_t newGID = (gid_t)-1;
+
+ 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))) {
+ need_chown = True;
+ }
+ if (need_chown) {
+ if ((newUID == (uid_t)-1
+ || newUID == fsp->conn->server_info->utok.uid)) {
+ 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);
+ need_chown = False;
+ } else { /* chown is needed, but _after_ changing acl */
+ sbuf.st_uid = newUID; /* OWNER@ in case of e_special */
+ sbuf.st_gid = newGID; /* GROUP@ in case of e_special */
+ }
+ }
+ }
+
+ if ((security_info_sent & DACL_SECURITY_INFORMATION)!=0 && psd->dacl!=NULL)
+ {
+ acl = smbacl4_win2nfs4(fsp->fsp_name, psd->dacl, ¶ms, sbuf.st_uid, sbuf.st_gid);
+ if (!acl)
+ return map_nt_error_from_unix(errno);
+
+ smbacl4_dump_nfs4acl(10, acl);
+
+ result = set_nfs4_native(fsp, acl);
+ if (result!=True)
+ {
+ DEBUG(10, ("set_nfs4_native failed with %s\n", strerror(errno)));
+ return map_nt_error_from_unix(errno);
+ }
+ } else
+ DEBUG(10, ("no dacl found; security_info_sent = 0x%x\n", security_info_sent));
+
+ /* Any chown pending? */
+ if (need_chown) {
+ DEBUG(3,("chown#2 %s. uid = %u, gid = %u.\n",
+ fsp->fsp_name, (unsigned int)newUID, (unsigned int)newGID));
+ if (try_chown(fsp->conn, fsp->fsp_name, newUID, newGID)) {
+ DEBUG(2,("chown#2 %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#2 %s, %u, %u succeeded.\n",
+ fsp->fsp_name, (unsigned int)newUID, (unsigned int)newGID));
+ }
+
+ DEBUG(10, ("smb_set_nt_acl_nfs4 succeeded\n"));
+ return NT_STATUS_OK;
+}
git.samba.org / jra / samba / .git / blobdiff