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Unix SMB/Netbios implementation.
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VFS module to get and set Solaris ACLs
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Copyright (C) Michael Adam 2006,2008
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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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/* typedef struct acl SOLARIS_ACE_T; */
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typedef aclent_t SOLARIS_ACE_T;
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typedef aclent_t *SOLARIS_ACL_T;
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typedef int SOLARIS_ACL_TAG_T; /* the type of an ACL entry */
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typedef o_mode_t SOLARIS_PERM_T;
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/* for convenience: check if solaris acl entry is a default entry? */
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#define _IS_DEFAULT(ace) ((ace).a_type & ACL_DEFAULT)
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#define _IS_OF_TYPE(ace, type) ( \
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(((type) == SMB_ACL_TYPE_ACCESS) && !_IS_DEFAULT(ace)) \
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(((type) == SMB_ACL_TYPE_DEFAULT) && _IS_DEFAULT(ace)) \
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/* prototypes for private functions */
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static SOLARIS_ACL_T solaris_acl_init(int count);
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static bool smb_acl_to_solaris_acl(SMB_ACL_T smb_acl,
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SOLARIS_ACL_T *solariacl, int *count,
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static SMB_ACL_T solaris_acl_to_smb_acl(SOLARIS_ACL_T solarisacl, int count,
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static SOLARIS_ACL_TAG_T smb_tag_to_solaris_tag(SMB_ACL_TAG_T smb_tag);
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static SMB_ACL_TAG_T solaris_tag_to_smb_tag(SOLARIS_ACL_TAG_T solaris_tag);
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static bool solaris_add_to_acl(SOLARIS_ACL_T *solaris_acl, int *count,
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SOLARIS_ACL_T add_acl, int add_count, SMB_ACL_TYPE_T type);
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static bool solaris_acl_get_file(const char *name, SOLARIS_ACL_T *solarisacl,
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static bool solaris_acl_get_fd(int fd, SOLARIS_ACL_T *solarisacl, int *count);
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static bool solaris_acl_sort(SOLARIS_ACL_T theacl, int count);
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static SMB_ACL_PERM_T solaris_perm_to_smb_perm(const SOLARIS_PERM_T perm);
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static SOLARIS_PERM_T smb_perm_to_solaris_perm(const SMB_ACL_PERM_T perm);
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static bool solaris_acl_check(SOLARIS_ACL_T solaris_acl, int count);
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/* public functions - the api */
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SMB_ACL_T solarisacl_sys_acl_get_file(vfs_handle_struct *handle,
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SMB_ACL_T result = NULL;
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SOLARIS_ACL_T solaris_acl = NULL;
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DEBUG(10, ("solarisacl_sys_acl_get_file called for file '%s'.\n",
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if (type != SMB_ACL_TYPE_ACCESS && type != SMB_ACL_TYPE_DEFAULT) {
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DEBUG(10, ("invalid SMB_ACL_TYPE given (%d)\n", type));
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DEBUGADD(10, ("getting %s acl\n",
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((type == SMB_ACL_TYPE_ACCESS) ? "access" : "default")));
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if (!solaris_acl_get_file(path_p, &solaris_acl, &count)) {
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result = solaris_acl_to_smb_acl(solaris_acl, count, type);
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DEBUG(10, ("conversion solaris_acl -> smb_acl failed (%s).\n",
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DEBUG(10, ("solarisacl_sys_acl_get_file %s.\n",
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((result == NULL) ? "failed" : "succeeded" )));
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SAFE_FREE(solaris_acl);
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* get the access ACL of a file referred to by a fd
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SMB_ACL_T solarisacl_sys_acl_get_fd(vfs_handle_struct *handle,
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SMB_ACL_T result = NULL;
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SOLARIS_ACL_T solaris_acl = NULL;
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DEBUG(10, ("entering solarisacl_sys_acl_get_fd.\n"));
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if (!solaris_acl_get_fd(fsp->fh->fd, &solaris_acl, &count)) {
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* The facl call returns both ACCESS and DEFAULT acls (as present).
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* The posix acl_get_fd function returns only the
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* access acl. So we need to filter this out here.
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result = solaris_acl_to_smb_acl(solaris_acl, count,
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SMB_ACL_TYPE_ACCESS);
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if (result == NULL) {
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DEBUG(10, ("conversion solaris_acl -> smb_acl failed (%s).\n",
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DEBUG(10, ("solarisacl_sys_acl_get_fd %s.\n",
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((result == NULL) ? "failed" : "succeeded")));
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SAFE_FREE(solaris_acl);
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int solarisacl_sys_acl_set_file(vfs_handle_struct *handle,
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SOLARIS_ACL_T solaris_acl = NULL;
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DEBUG(10, ("solarisacl_sys_acl_set_file called for file '%s'\n",
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if ((type != SMB_ACL_TYPE_ACCESS) && (type != SMB_ACL_TYPE_DEFAULT)) {
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DEBUG(10, ("invalid smb acl type given (%d).\n", type));
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DEBUGADD(10, ("setting %s acl\n",
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((type == SMB_ACL_TYPE_ACCESS) ? "access" : "default")));
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if(!smb_acl_to_solaris_acl(theacl, &solaris_acl, &count, type)) {
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DEBUG(10, ("conversion smb_acl -> solaris_acl failed (%s).\n",
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* if the file is a directory, there is extra work to do:
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* since the solaris acl call stores both the access acl and
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* the default acl as provided, we have to get the acl part
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* that has not been specified in "type" from the file first
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* and concatenate it with the acl provided.
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if (SMB_VFS_STAT(handle->conn, name, &s) != 0) {
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DEBUG(10, ("Error in stat call: %s\n", strerror(errno)));
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if (S_ISDIR(s.st_mode)) {
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SOLARIS_ACL_T other_acl;
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SMB_ACL_TYPE_T other_type;
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other_type = (type == SMB_ACL_TYPE_ACCESS)
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? SMB_ACL_TYPE_DEFAULT
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: SMB_ACL_TYPE_ACCESS;
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DEBUGADD(10, ("getting acl from filesystem\n"));
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if (!solaris_acl_get_file(name, &other_acl, &other_count)) {
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DEBUG(10, ("error getting acl from directory\n"));
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DEBUG(10, ("adding %s part of fs acl to given acl\n",
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((other_type == SMB_ACL_TYPE_ACCESS)
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if (!solaris_add_to_acl(&solaris_acl, &count, other_acl,
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other_count, other_type))
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DEBUG(10, ("error adding other acl.\n"));
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SAFE_FREE(other_acl);
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SAFE_FREE(other_acl);
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else if (type != SMB_ACL_TYPE_ACCESS) {
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if (!solaris_acl_sort(solaris_acl, count)) {
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DEBUG(10, ("resulting acl is not valid!\n"));
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ret = acl(name, SETACL, count, solaris_acl);
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DEBUG(10, ("solarisacl_sys_acl_set_file %s.\n",
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((ret != 0) ? "failed" : "succeeded")));
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SAFE_FREE(solaris_acl);
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* set the access ACL on the file referred to by a fd
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int solarisacl_sys_acl_set_fd(vfs_handle_struct *handle,
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SOLARIS_ACL_T solaris_acl = NULL;
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SOLARIS_ACL_T default_acl = NULL;
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int count, default_count;
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DEBUG(10, ("entering solarisacl_sys_acl_set_fd\n"));
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* the posix acl_set_fd call sets the access acl of the
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* file referred to by fd. the solaris facl-SETACL call
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* sets the access and default acl as provided, so we
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* have to retrieve the default acl of the file and
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* concatenate it with the access acl provided.
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if (!smb_acl_to_solaris_acl(theacl, &solaris_acl, &count,
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SMB_ACL_TYPE_ACCESS))
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DEBUG(10, ("conversion smb_acl -> solaris_acl failed (%s).\n",
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if (!solaris_acl_get_fd(fsp->fh->fd, &default_acl, &default_count)) {
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DEBUG(10, ("error getting (default) acl from fd\n"));
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if (!solaris_add_to_acl(&solaris_acl, &count,
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default_acl, default_count,
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SMB_ACL_TYPE_DEFAULT))
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DEBUG(10, ("error adding default acl to solaris acl\n"));
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if (!solaris_acl_sort(solaris_acl, count)) {
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DEBUG(10, ("resulting acl is not valid!\n"));
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ret = facl(fsp->fh->fd, SETACL, count, solaris_acl);
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DEBUG(10, ("call of facl failed (%s).\n", strerror(errno)));
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DEBUG(10, ("solarisacl_sys_acl_set_fd %s.\n",
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((ret == 0) ? "succeeded" : "failed" )));
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SAFE_FREE(solaris_acl);
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SAFE_FREE(default_acl);
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* delete the default ACL of a directory
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* This is achieved by fetching the access ACL and rewriting it
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* directly, via the solaris system call: the SETACL call on
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* directories writes both the access and the default ACL as provided.
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* XXX: posix acl_delete_def_file returns an error if
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* the file referred to by path is not a directory.
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* this function does not complain but the actions
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* have no effect on a file other than a directory.
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* But sys_acl_delete_default_file is only called in
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* smbd/posixacls.c after having checked that the file
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* is a directory, anyways. So implementing the extra
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* check is considered unnecessary. --- Agreed? XXX
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int solarisacl_sys_acl_delete_def_file(vfs_handle_struct *handle,
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SOLARIS_ACL_T solaris_acl = NULL;
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DEBUG(10, ("entering solarisacl_sys_acl_delete_def_file.\n"));
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smb_acl = solarisacl_sys_acl_get_file(handle, path,
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SMB_ACL_TYPE_ACCESS);
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if (smb_acl == NULL) {
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DEBUG(10, ("getting file acl failed!\n"));
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if (!smb_acl_to_solaris_acl(smb_acl, &solaris_acl, &count,
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SMB_ACL_TYPE_ACCESS))
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DEBUG(10, ("conversion smb_acl -> solaris_acl failed.\n"));
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if (!solaris_acl_sort(solaris_acl, count)) {
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DEBUG(10, ("resulting acl is not valid!\n"));
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ret = acl(path, SETACL, count, solaris_acl);
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DEBUG(10, ("settinge file acl failed!\n"));
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DEBUG(10, ("solarisacl_sys_acl_delete_def_file %s.\n",
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((ret != 0) ? "failed" : "succeeded" )));
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/* private functions */
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static SOLARIS_ACL_T solaris_acl_init(int count)
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SOLARIS_ACL_T solaris_acl =
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(SOLARIS_ACL_T)SMB_MALLOC(sizeof(aclent_t) * count);
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if (solaris_acl == NULL) {
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* Convert the SMB acl to the ACCESS or DEFAULT part of a
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* solaris ACL, as desired.
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static bool smb_acl_to_solaris_acl(SMB_ACL_T smb_acl,
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SOLARIS_ACL_T *solaris_acl, int *count,
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DEBUG(10, ("entering smb_acl_to_solaris_acl\n"));
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for (i = 0; i < smb_acl->count; i++) {
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const struct smb_acl_entry *smb_entry = &(smb_acl->acl[i]);
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SOLARIS_ACE_T solaris_entry;
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ZERO_STRUCT(solaris_entry);
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solaris_entry.a_type = smb_tag_to_solaris_tag(smb_entry->a_type);
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if (solaris_entry.a_type == 0) {
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DEBUG(10, ("smb_tag to solaris_tag failed\n"));
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switch(solaris_entry.a_type) {
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DEBUG(10, ("got tag type USER with uid %u\n",
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(unsigned int)smb_entry->uid));
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solaris_entry.a_id = (uid_t)smb_entry->uid;
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DEBUG(10, ("got tag type GROUP with gid %u\n",
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(unsigned int)smb_entry->gid));
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solaris_entry.a_id = (uid_t)smb_entry->gid;
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if (type == SMB_ACL_TYPE_DEFAULT) {
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DEBUG(10, ("adding default bit to solaris ace\n"));
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solaris_entry.a_type |= ACL_DEFAULT;
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solaris_entry.a_perm =
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smb_perm_to_solaris_perm(smb_entry->a_perm);
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DEBUG(10, ("assembled the following solaris ace:\n"));
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DEBUGADD(10, (" - type: 0x%04x\n", solaris_entry.a_type));
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DEBUGADD(10, (" - id: %u\n", (unsigned int)solaris_entry.a_id));
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DEBUGADD(10, (" - perm: o%o\n", solaris_entry.a_perm));
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if (!solaris_add_to_acl(solaris_acl, count, &solaris_entry,
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DEBUG(10, ("error adding acl entry\n"));
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DEBUG(10, ("count after adding: %d (i: %d)\n", *count, i));
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DEBUG(10, ("test, if entry has been copied into acl:\n"));
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DEBUGADD(10, (" - type: 0x%04x\n",
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(*solaris_acl)[(*count)-1].a_type));
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DEBUGADD(10, (" - id: %u\n",
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(unsigned int)(*solaris_acl)[(*count)-1].a_id));
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DEBUGADD(10, (" - perm: o%o\n",
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(*solaris_acl)[(*count)-1].a_perm));
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SAFE_FREE(*solaris_acl);
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DEBUG(10, ("smb_acl_to_solaris_acl %s\n",
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((ret == True) ? "succeeded" : "failed")));
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* convert either the access or the default part of a
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* soaris acl to the SMB_ACL format.
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static SMB_ACL_T solaris_acl_to_smb_acl(SOLARIS_ACL_T solaris_acl, int count,
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if ((result = sys_acl_init(0)) == NULL) {
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DEBUG(10, ("error allocating memory for SMB_ACL\n"));
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for (i = 0; i < count; i++) {
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SMB_ACL_ENTRY_T smb_entry;
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SMB_ACL_PERM_T smb_perm;
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if (!_IS_OF_TYPE(solaris_acl[i], type)) {
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result = SMB_REALLOC(result,
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sizeof(struct smb_acl_t) +
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(sizeof(struct smb_acl_entry) *
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(result->count + 1)));
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if (result == NULL) {
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DEBUG(10, ("error reallocating memory for SMB_ACL\n"));
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smb_entry = &result->acl[result->count];
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if (sys_acl_set_tag_type(smb_entry,
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solaris_tag_to_smb_tag(solaris_acl[i].a_type)) != 0)
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DEBUG(10, ("invalid tag type given: 0x%04x\n",
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solaris_acl[i].a_type));
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/* intentionally not checking return code here: */
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sys_acl_set_qualifier(smb_entry, (void *)&solaris_acl[i].a_id);
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smb_perm = solaris_perm_to_smb_perm(solaris_acl[i].a_perm);
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if (sys_acl_set_permset(smb_entry, &smb_perm) != 0) {
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DEBUG(10, ("invalid permset given: %d\n",
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solaris_acl[i].a_perm));
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DEBUG(10, ("solaris_acl_to_smb_acl %s\n",
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((result == NULL) ? "failed" : "succeeded")));
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static SOLARIS_ACL_TAG_T smb_tag_to_solaris_tag(SMB_ACL_TAG_T smb_tag)
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SOLARIS_ACL_TAG_T solaris_tag = 0;
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DEBUG(10, ("smb_tag_to_solaris_tag\n"));
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DEBUGADD(10, (" --> got smb tag 0x%04x\n", smb_tag));
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case SMB_ACL_USER_OBJ:
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solaris_tag = USER_OBJ;
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case SMB_ACL_GROUP_OBJ:
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solaris_tag = GROUP_OBJ;
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solaris_tag = OTHER_OBJ;
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solaris_tag = CLASS_OBJ;
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DEBUGADD(10, (" !!! unknown smb tag type 0x%04x\n", smb_tag));
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DEBUGADD(10, (" --> determined solaris tag 0x%04x\n", solaris_tag));
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static SMB_ACL_TAG_T solaris_tag_to_smb_tag(SOLARIS_ACL_TAG_T solaris_tag)
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SMB_ACL_TAG_T smb_tag = 0;
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DEBUG(10, ("solaris_tag_to_smb_tag:\n"));
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DEBUGADD(10, (" --> got solaris tag 0x%04x\n", solaris_tag));
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solaris_tag &= ~ACL_DEFAULT;
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switch (solaris_tag) {
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smb_tag = SMB_ACL_USER;
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smb_tag = SMB_ACL_USER_OBJ;
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smb_tag = SMB_ACL_GROUP;
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smb_tag = SMB_ACL_GROUP_OBJ;
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smb_tag = SMB_ACL_OTHER;
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smb_tag = SMB_ACL_MASK;
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DEBUGADD(10, (" !!! unknown solaris tag type: 0x%04x\n",
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DEBUGADD(10, (" --> determined smb tag 0x%04x\n", smb_tag));
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static SMB_ACL_PERM_T solaris_perm_to_smb_perm(const SOLARIS_PERM_T perm)
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SMB_ACL_PERM_T smb_perm = 0;
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smb_perm |= ((perm & SMB_ACL_READ) ? SMB_ACL_READ : 0);
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smb_perm |= ((perm & SMB_ACL_WRITE) ? SMB_ACL_WRITE : 0);
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smb_perm |= ((perm & SMB_ACL_EXECUTE) ? SMB_ACL_EXECUTE : 0);
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static SOLARIS_PERM_T smb_perm_to_solaris_perm(const SMB_ACL_PERM_T perm)
567
SOLARIS_PERM_T solaris_perm = 0;
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solaris_perm |= ((perm & SMB_ACL_READ) ? SMB_ACL_READ : 0);
569
solaris_perm |= ((perm & SMB_ACL_WRITE) ? SMB_ACL_WRITE : 0);
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solaris_perm |= ((perm & SMB_ACL_EXECUTE) ? SMB_ACL_EXECUTE : 0);
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static bool solaris_acl_get_file(const char *name, SOLARIS_ACL_T *solaris_acl,
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DEBUG(10, ("solaris_acl_get_file called for file '%s'\n", name));
583
* The original code tries some INITIAL_ACL_SIZE
584
* and only did the GETACLCNT call upon failure
585
* (for performance reasons).
586
* For the sake of simplicity, I skip this for now.
588
*count = acl(name, GETACLCNT, 0, NULL);
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DEBUG(10, ("acl GETACLCNT failed: %s\n", strerror(errno)));
593
*solaris_acl = solaris_acl_init(*count);
594
if (*solaris_acl == NULL) {
595
DEBUG(10, ("error allocating memory for solaris acl...\n"));
598
*count = acl(name, GETACL, *count, *solaris_acl);
600
DEBUG(10, ("acl GETACL failed: %s\n", strerror(errno)));
606
DEBUG(10, ("solaris_acl_get_file %s.\n",
607
((result == True) ? "succeeded" : "failed" )));
612
static bool solaris_acl_get_fd(int fd, SOLARIS_ACL_T *solaris_acl, int *count)
616
DEBUG(10, ("entering solaris_acl_get_fd\n"));
619
* see solaris_acl_get_file for comment about omission
620
* of INITIAL_ACL_SIZE...
622
*count = facl(fd, GETACLCNT, 0, NULL);
624
DEBUG(10, ("facl GETACLCNT failed: %s\n", strerror(errno)));
627
*solaris_acl = solaris_acl_init(*count);
628
if (*solaris_acl == NULL) {
629
DEBUG(10, ("error allocating memory for solaris acl...\n"));
632
*count = facl(fd, GETACL, *count, *solaris_acl);
634
DEBUG(10, ("facl GETACL failed: %s\n", strerror(errno)));
640
DEBUG(10, ("solaris_acl_get_fd %s\n",
641
((ret == True) ? "succeeded" : "failed")));
648
* Add entries to a solaris ACL.
650
* Entries are directly added to the solarisacl parameter.
651
* if memory allocation fails, this may result in solarisacl
652
* being NULL. if the resulting acl is to be checked and is
653
* not valid, it is kept in solarisacl but False is returned.
655
* The type of ACEs (access/default) to be added to the ACL can
656
* be selected via the type parameter.
657
* I use the SMB_ACL_TYPE_T type here. Since SMB_ACL_TYPE_ACCESS
658
* is defined as "0", this means that one can only add either
659
* access or default ACEs, not both at the same time. If it
660
* should become necessary to add all of an ACL, one would have
661
* to replace this parameter by another type.
663
static bool solaris_add_to_acl(SOLARIS_ACL_T *solaris_acl, int *count,
664
SOLARIS_ACL_T add_acl, int add_count,
669
if ((type != SMB_ACL_TYPE_ACCESS) && (type != SMB_ACL_TYPE_DEFAULT))
671
DEBUG(10, ("invalid acl type given: %d\n", type));
675
for (i = 0; i < add_count; i++) {
676
if (!_IS_OF_TYPE(add_acl[i], type)) {
679
ADD_TO_ARRAY(NULL, SOLARIS_ACE_T, add_acl[i],
681
if (solaris_acl == NULL) {
682
DEBUG(10, ("error enlarging acl.\n"));
692
* sort the ACL and check it for validity
694
* [original comment from lib/sysacls.c:]
696
* if it's a minimal ACL with only 4 entries then we
697
* need to recalculate the mask permissions to make
698
* sure that they are the same as the GROUP_OBJ
699
* permissions as required by the UnixWare acl() system call.
701
* (note: since POSIX allows minimal ACLs which only contain
702
* 3 entries - ie there is no mask entry - we should, in theory,
703
* check for this and add a mask entry if necessary - however
704
* we "know" that the caller of this interface always specifies
705
* a mask, so in practice "this never happens" (tm) - if it *does*
706
* happen aclsort() will fail and return an error and someone will
709
static bool solaris_acl_sort(SOLARIS_ACL_T solaris_acl, int count)
711
int fixmask = (count <= 4);
713
if (aclsort(count, fixmask, solaris_acl) != 0) {
722
* acl check function:
723
* unused at the moment but could be used to get more
724
* concrete error messages for debugging...
725
* (acl sort just says that the acl is invalid...)
727
static bool solaris_acl_check(SOLARIS_ACL_T solaris_acl, int count)
732
check_rc = aclcheck(solaris_acl, count, &check_which);
734
DEBUG(10, ("acl is not valid:\n"));
735
DEBUGADD(10, (" - return code: %d\n", check_rc));
736
DEBUGADD(10, (" - which: %d\n", check_which));
737
if (check_which != -1) {
738
DEBUGADD(10, (" - invalid entry:\n"));
739
DEBUGADD(10, (" * type: %d:\n",
740
solaris_acl[check_which].a_type));
741
DEBUGADD(10, (" * id: %d\n",
742
solaris_acl[check_which].a_id));
743
DEBUGADD(10, (" * perm: 0o%o\n",
744
solaris_acl[check_which].a_perm));
752
/* VFS operations structure */
754
static vfs_op_tuple solarisacl_op_tuples[] = {
755
/* Disk operations */
756
{SMB_VFS_OP(solarisacl_sys_acl_get_file),
757
SMB_VFS_OP_SYS_ACL_GET_FILE,
758
SMB_VFS_LAYER_TRANSPARENT},
760
{SMB_VFS_OP(solarisacl_sys_acl_get_fd),
761
SMB_VFS_OP_SYS_ACL_GET_FD,
762
SMB_VFS_LAYER_TRANSPARENT},
764
{SMB_VFS_OP(solarisacl_sys_acl_set_file),
765
SMB_VFS_OP_SYS_ACL_SET_FILE,
766
SMB_VFS_LAYER_TRANSPARENT},
768
{SMB_VFS_OP(solarisacl_sys_acl_set_fd),
769
SMB_VFS_OP_SYS_ACL_SET_FD,
770
SMB_VFS_LAYER_TRANSPARENT},
772
{SMB_VFS_OP(solarisacl_sys_acl_delete_def_file),
773
SMB_VFS_OP_SYS_ACL_DELETE_DEF_FILE,
774
SMB_VFS_LAYER_TRANSPARENT},
781
NTSTATUS vfs_solarisacl_init(void);
782
NTSTATUS vfs_solarisacl_init(void)
784
return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "solarisacl",
785
solarisacl_op_tuples);