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e1b4df414f
Make use of the passed in TALLOC_CTX * from the init function to remove a talloc_autofree_context() use. Signed-off-by: Jeremy Allison <jra@samba.org> Reviewed-by: Ralph Boehme <slow@samba.org>
105 lines
2.6 KiB
C
105 lines
2.6 KiB
C
/*
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Unix SMB/CIFS implementation.
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POSIX NTVFS backend - NT ACLs in xattrs
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Copyright (C) Andrew Tridgell 2006
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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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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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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 "vfs_posix.h"
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#include "../lib/util/unix_privs.h"
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#include "librpc/gen_ndr/ndr_xattr.h"
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NTSTATUS pvfs_acl_xattr_init(TALLOC_CTX *);
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/*
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load the current ACL from extended attributes
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*/
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static NTSTATUS pvfs_acl_load_xattr(struct pvfs_state *pvfs, struct pvfs_filename *name, int fd,
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TALLOC_CTX *mem_ctx,
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struct security_descriptor **sd)
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{
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NTSTATUS status;
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struct xattr_NTACL *acl;
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if (!(pvfs->flags & PVFS_FLAG_XATTR_ENABLE)) {
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return NT_STATUS_NOT_FOUND;
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}
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acl = talloc_zero(mem_ctx, struct xattr_NTACL);
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NT_STATUS_HAVE_NO_MEMORY(acl);
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status = pvfs_xattr_ndr_load(pvfs, mem_ctx, name->full_name, fd,
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XATTR_NTACL_NAME,
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acl, (void *) ndr_pull_xattr_NTACL);
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if (!NT_STATUS_IS_OK(status)) {
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talloc_free(acl);
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return status;
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}
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if (acl->version != 1) {
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talloc_free(acl);
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return NT_STATUS_INVALID_ACL;
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}
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*sd = talloc_steal(mem_ctx, acl->info.sd);
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return NT_STATUS_OK;
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}
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/*
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save the acl for a file into filesystem xattr
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*/
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static NTSTATUS pvfs_acl_save_xattr(struct pvfs_state *pvfs, struct pvfs_filename *name, int fd,
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struct security_descriptor *sd)
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{
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NTSTATUS status;
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void *privs;
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struct xattr_NTACL acl;
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if (!(pvfs->flags & PVFS_FLAG_XATTR_ENABLE)) {
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return NT_STATUS_OK;
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}
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acl.version = 1;
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acl.info.sd = sd;
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/* this xattr is in the "system" namespace, so we need
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admin privileges to set it */
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privs = root_privileges();
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status = pvfs_xattr_ndr_save(pvfs, name->full_name, fd,
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XATTR_NTACL_NAME,
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&acl, (void *) ndr_push_xattr_NTACL);
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talloc_free(privs);
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return status;
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}
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/*
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initialise pvfs acl xattr backend
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*/
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NTSTATUS pvfs_acl_xattr_init(TALLOC_CTX *ctx)
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{
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struct pvfs_acl_ops ops = {
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.name = "xattr",
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.acl_load = pvfs_acl_load_xattr,
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.acl_save = pvfs_acl_save_xattr
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};
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return pvfs_acl_register(ctx, &ops);
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}
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