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samba-mirror/source3/modules/vfs_tru64acl.c

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/*
Unix SMB/Netbios implementation.
VFS module to get and set Tru64 acls
Copyright (C) Michael Adam 2006,2008
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 "system/filesys.h"
#include "smbd/smbd.h"
#include "modules/vfs_tru64acl.h"
/* prototypes for private functions first - for clarity */
static struct smb_acl_t *tru64_acl_to_smb_acl(const struct acl *tru64_acl,
TALLOC_CTX *mem_ctx);
static bool tru64_ace_to_smb_ace(acl_entry_t tru64_ace,
struct smb_acl_entry *smb_ace);
static acl_t smb_acl_to_tru64_acl(const SMB_ACL_T smb_acl);
static acl_tag_t smb_tag_to_tru64(SMB_ACL_TAG_T smb_tag);
static SMB_ACL_TAG_T tru64_tag_to_smb(acl_tag_t tru64_tag);
static acl_perm_t smb_permset_to_tru64(SMB_ACL_PERM_T smb_permset);
static SMB_ACL_PERM_T tru64_permset_to_smb(const acl_perm_t tru64_permset);
/* public functions - the api */
SMB_ACL_T tru64acl_sys_acl_get_file(vfs_handle_struct *handle,
const struct smb_filename *smb_fname,
SMB_ACL_TYPE_T type,
TALLOC_CTX *mem_ctx)
{
struct smb_acl_t *result;
acl_type_t the_acl_type;
acl_t tru64_acl;
DEBUG(10, ("Hi! This is tru64acl_sys_acl_get_file.\n"));
switch(type) {
case SMB_ACL_TYPE_ACCESS:
the_acl_type = ACL_TYPE_ACCESS;
break;
case SMB_ACL_TYPE_DEFAULT:
the_acl_type = ACL_TYPE_DEFAULT;
break;
default:
errno = EINVAL;
return NULL;
}
tru64_acl = acl_get_file((char *)smb_fname->base_name, the_acl_type);
if (tru64_acl == NULL) {
return NULL;
}
result = tru64_acl_to_smb_acl(tru64_acl, mem_ctx);
acl_free(tru64_acl);
return result;
}
SMB_ACL_T tru64acl_sys_acl_get_fd(vfs_handle_struct *handle,
files_struct *fsp,
TALLOC_CTX *mem_ctx)
{
struct smb_acl_t *result;
acl_t tru64_acl = acl_get_fd(fsp->fh->fd, ACL_TYPE_ACCESS);
if (tru64_acl == NULL) {
return NULL;
}
result = tru64_acl_to_smb_acl(tru64_acl, mem_ctx);
acl_free(tru64_acl);
return result;
}
int tru64acl_sys_acl_set_file(vfs_handle_struct *handle,
const struct smb_filename *smb_fname,
SMB_ACL_TYPE_T type,
SMB_ACL_T theacl)
{
int res;
acl_type_t the_acl_type;
acl_t tru64_acl;
DEBUG(10, ("tru64acl_sys_acl_set_file called with name %s, type %d\n",
smb_fname->base_name, type));
switch(type) {
case SMB_ACL_TYPE_ACCESS:
DEBUGADD(10, ("got acl type ACL_TYPE_ACCESS\n"));
the_acl_type = ACL_TYPE_ACCESS;
break;
case SMB_ACL_TYPE_DEFAULT:
DEBUGADD(10, ("got acl type ACL_TYPE_DEFAULT\n"));
the_acl_type = ACL_TYPE_DEFAULT;
break;
default:
DEBUGADD(10, ("invalid acl type\n"));
errno = EINVAL;
goto fail;
}
tru64_acl = smb_acl_to_tru64_acl(theacl);
if (tru64_acl == NULL) {
DEBUG(10, ("smb_acl_to_tru64_acl failed!\n"));
goto fail;
}
DEBUG(10, ("got tru64 acl...\n"));
res = acl_set_file((char *)smb_fname->base_name,
the_acl_type, tru64_acl);
acl_free(tru64_acl);
if (res != 0) {
DEBUG(10, ("acl_set_file failed: %s\n", strerror(errno)));
goto fail;
}
return res;
fail:
DEBUG(1, ("tru64acl_sys_acl_set_file failed!\n"));
return -1;
}
int tru64acl_sys_acl_set_fd(vfs_handle_struct *handle,
files_struct *fsp,
SMB_ACL_T theacl)
{
int res;
acl_t tru64_acl = smb_acl_to_tru64_acl(theacl);
if (tru64_acl == NULL) {
return -1;
}
res = acl_set_fd(fsp->fh->fd, ACL_TYPE_ACCESS, tru64_acl);
acl_free(tru64_acl);
return res;
}
int tru64acl_sys_acl_delete_def_file(vfs_handle_struct *handle,
const struct smb_filename *smb_fname)
{
return acl_delete_def_file((char *)smb_fname->base_name);
}
/* private functions */
static struct smb_acl_t *tru64_acl_to_smb_acl(const struct acl *tru64_acl,
TALLOC_CTX *mem_ctx)
{
struct smb_acl_t *result;
acl_entry_t entry;
DEBUG(10, ("Hi! This is tru64_acl_to_smb_acl.\n"));
if ((result = sys_acl_init(mem_ctx)) == NULL) {
DEBUG(0, ("sys_acl_init() failed in tru64_acl_to_smb_acl\n"));
errno = ENOMEM;
goto fail;
}
if (acl_first_entry((struct acl *)tru64_acl) != 0) {
DEBUG(10, ("acl_first_entry failed: %s\n", strerror(errno)));
goto fail;
}
while ((entry = acl_get_entry((struct acl *)tru64_acl)) != NULL) {
result->acl = talloc_realloc(result, result->acl, struct smb_acl_entry,
result->count + 1);
if (result->acl == NULL) {
TALLOC_FREE(result);
DEBUG(0, ("talloc_realloc failed in tru64_acl_to_smb_acl\n"));
errno = ENOMEM;
goto fail;
}
/* XYZ */
if (!tru64_ace_to_smb_ace(entry, &result->acl[result->count])) {
TALLOC_FREE(result);
goto fail;
}
result->count += 1;
}
return result;
fail:
TALLOC_FREE(result);
DEBUG(1, ("tru64_acl_to_smb_acl failed!\n"));
return NULL;
}
static bool tru64_ace_to_smb_ace(acl_entry_t tru64_ace,
struct smb_acl_entry *smb_ace)
{
acl_tag_t tru64_tag;
acl_permset_t permset;
SMB_ACL_TAG_T smb_tag_type;
SMB_ACL_PERM_T smb_permset;
void *qualifier;
if (acl_get_tag_type(tru64_ace, &tru64_tag) != 0) {
DEBUG(0, ("acl_get_tag_type failed: %s\n", strerror(errno)));
return False;
}
/* On could set the tag type directly to save a function call,
* but I like this better... */
smb_tag_type = tru64_tag_to_smb(tru64_tag);
if (smb_tag_type == 0) {
DEBUG(3, ("invalid tag type given: %d\n", tru64_tag));
return False;
}
if (sys_acl_set_tag_type(smb_ace, smb_tag_type) != 0) {
DEBUG(3, ("sys_acl_set_tag_type failed: %s\n",
strerror(errno)));
return False;
}
qualifier = acl_get_qualifier(tru64_ace);
if (qualifier != NULL) {
if (sys_acl_set_qualifier(smb_ace, qualifier) != 0) {
DEBUG(3, ("sys_acl_set_qualifier failed\n"));
return False;
}
}
if (acl_get_permset(tru64_ace, &permset) != 0) {
DEBUG(3, ("acl_get_permset failed: %s\n", strerror(errno)));
return False;
}
smb_permset = tru64_permset_to_smb(*permset);
if (sys_acl_set_permset(smb_ace, &smb_permset) != 0) {
DEBUG(3, ("sys_acl_set_permset failed: %s\n", strerror(errno)));
return False;
}
return True;
}
static acl_t smb_acl_to_tru64_acl(const SMB_ACL_T smb_acl)
{
acl_t result;
acl_entry_t tru64_entry;
int i;
char *acl_text;
ssize_t acl_text_len;
/* The tru64 acl_init function takes a size_t value
* instead of a count of entries (as with posix).
* the size parameter "Specifies the size of the working
* storage in bytes" (according to the man page).
* But it is unclear to me, how this size is to be
* calculated.
*
* It should not matter, since acl_create_entry enlarges
* the working storage at need. ... */
DEBUG(10, ("Hi! This is smb_acl_to_tru64_acl.\n"));
result = acl_init(1);
if (result == NULL) {
DEBUG(3, ("acl_init failed!\n"));
goto fail;
}
DEBUGADD(10, ("parsing acl entries...\n"));
for (i = 0; i < smb_acl->count; i++) {
/* XYZ - maybe eliminate this direct access? */
const struct smb_acl_entry *smb_entry = &smb_acl->acl[i];
acl_tag_t tru64_tag;
acl_perm_t tru64_permset;
tru64_tag = smb_tag_to_tru64(smb_entry->a_type);
if (tru64_tag == -1) {
DEBUG(3, ("smb_tag_to_tru64 failed!\n"));
goto fail;
}
if (tru64_tag == ACL_MASK) {
DEBUGADD(10, (" - acl type ACL_MASK: not implemented on Tru64 ==> skipping\n"));
continue;
}
tru64_entry = acl_create_entry(&result);
if (tru64_entry == NULL) {
DEBUG(3, ("acl_create_entry failed: %s\n",
strerror(errno)));
goto fail;
}
if (acl_set_tag_type(tru64_entry, tru64_tag) != 0) {
DEBUG(3, ("acl_set_tag_type(%d) failed: %s\n",
strerror(errno)));
goto fail;
}
switch (smb_entry->a_type) {
case SMB_ACL_USER:
if (acl_set_qualifier(tru64_entry,
(int *)&smb_entry->info.user.uid) != 0)
{
DEBUG(3, ("acl_set_qualifier failed: %s\n",
strerror(errno)));
goto fail;
}
DEBUGADD(10, (" - setting uid to %d\n", smb_entry->info.user.uid));
break;
case SMB_ACL_GROUP:
if (acl_set_qualifier(tru64_entry,
(int *)&smb_entry->info.group.gid) != 0)
{
DEBUG(3, ("acl_set_qualifier failed: %s\n",
strerror(errno)));
goto fail;
}
DEBUGADD(10, (" - setting gid to %d\n", smb_entry->info.group.gid));
break;
default:
break;
}
tru64_permset = smb_permset_to_tru64(smb_entry->a_perm);
if (tru64_permset == -1) {
DEBUG(3, ("smb_permset_to_tru64 failed!\n"));
goto fail;
}
DEBUGADD(10, (" - setting perms to %0d\n", tru64_permset));
if (acl_set_permset(tru64_entry, &tru64_permset) != 0)
{
DEBUG(3, ("acl_set_permset failed: %s\n", strerror(errno)));
goto fail;
}
} /* for */
DEBUGADD(10, ("done parsing acl entries\n"));
tru64_entry = NULL;
if (acl_valid(result, &tru64_entry) != 0) {
DEBUG(1, ("smb_acl_to_tru64_acl: ACL is invalid (%s)\n",
strerror(errno)));
if (tru64_entry != NULL) {
DEBUGADD(1, ("the acl contains duplicate entries\n"));
}
goto fail;
}
DEBUGADD(10, ("acl is valid\n"));
acl_text = acl_to_text(result, &acl_text_len);
if (acl_text == NULL) {
DEBUG(3, ("acl_to_text failed: %s\n", strerror(errno)));
goto fail;
}
DEBUG(1, ("acl_text: %s\n", acl_text));
free(acl_text);
return result;
fail:
if (result != NULL) {
acl_free(result);
}
DEBUG(1, ("smb_acl_to_tru64_acl failed!\n"));
return NULL;
}
static acl_tag_t smb_tag_to_tru64(SMB_ACL_TAG_T smb_tag)
{
acl_tag_t result;
switch (smb_tag) {
case SMB_ACL_USER:
result = ACL_USER;
DEBUGADD(10, ("got acl type ACL_USER\n"));
break;
case SMB_ACL_USER_OBJ:
result = ACL_USER_OBJ;
DEBUGADD(10, ("got acl type ACL_USER_OBJ\n"));
break;
case SMB_ACL_GROUP:
result = ACL_GROUP;
DEBUGADD(10, ("got acl type ACL_GROUP\n"));
break;
case SMB_ACL_GROUP_OBJ:
result = ACL_GROUP_OBJ;
DEBUGADD(10, ("got acl type ACL_GROUP_OBJ\n"));
break;
case SMB_ACL_OTHER:
result = ACL_OTHER;
DEBUGADD(10, ("got acl type ACL_OTHER\n"));
break;
case SMB_ACL_MASK:
result = ACL_MASK;
DEBUGADD(10, ("got acl type ACL_MASK\n"));
break;
default:
DEBUG(1, ("Unknown tag type %d\n", smb_tag));
result = -1;
}
return result;
}
static SMB_ACL_TAG_T tru64_tag_to_smb(acl_tag_t tru64_tag)
{
SMB_ACL_TAG_T smb_tag_type;
switch(tru64_tag) {
case ACL_USER:
smb_tag_type = SMB_ACL_USER;
DEBUGADD(10, ("got smb acl tag type SMB_ACL_USER\n"));
break;
case ACL_USER_OBJ:
smb_tag_type = SMB_ACL_USER_OBJ;
DEBUGADD(10, ("got smb acl tag type SMB_ACL_USER_OBJ\n"));
break;
case ACL_GROUP:
smb_tag_type = SMB_ACL_GROUP;
DEBUGADD(10, ("got smb acl tag type SMB_ACL_GROUP\n"));
break;
case ACL_GROUP_OBJ:
smb_tag_type = SMB_ACL_GROUP_OBJ;
DEBUGADD(10, ("got smb acl tag type SMB_ACL_GROUP_OBJ\n"));
break;
case ACL_OTHER:
smb_tag_type = SMB_ACL_OTHER;
DEBUGADD(10, ("got smb acl tag type SMB_ACL_OTHER\n"));
break;
case ACL_MASK:
smb_tag_type = SMB_ACL_MASK;
DEBUGADD(10, ("got smb acl tag type SMB_ACL_MASK\n"));
break;
default:
DEBUG(0, ("Unknown tag type %d\n", (unsigned int)tru64_tag));
smb_tag_type = 0;
}
return smb_tag_type;
}
static acl_perm_t smb_permset_to_tru64(SMB_ACL_PERM_T smb_permset)
{
/* originally, I thought that acl_clear_perm was the
* proper way to reset the permset to 0. but without
* initializing it to 0, acl_clear_perm fails.
* so probably, acl_clear_perm is not necessary here... ?! */
acl_perm_t tru64_permset = 0;
if (acl_clear_perm(&tru64_permset) != 0) {
DEBUG(5, ("acl_clear_perm failed: %s\n", strerror(errno)));
return -1;
}
/* according to original lib/sysacls.c, acl_add_perm is
* broken on tru64 ... */
tru64_permset |= ((smb_permset & SMB_ACL_READ) ? ACL_READ : 0);
tru64_permset |= ((smb_permset & SMB_ACL_WRITE) ? ACL_WRITE : 0);
tru64_permset |= ((smb_permset & SMB_ACL_EXECUTE) ? ACL_EXECUTE : 0);
return tru64_permset;
}
static SMB_ACL_PERM_T tru64_permset_to_smb(const acl_perm_t tru64_permset)
{
SMB_ACL_PERM_T smb_permset = 0;
smb_permset |= ((tru64_permset & ACL_READ) ? SMB_ACL_READ : 0);
smb_permset |= ((tru64_permset & ACL_WRITE) ? SMB_ACL_WRITE : 0);
smb_permset |= ((tru64_permset & ACL_EXECUTE) ? SMB_ACL_EXECUTE : 0);
return smb_permset;
}
/* VFS operations structure */
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static struct vfs_fn_pointers tru64acl_fns = {
.sys_acl_get_file_fn = tru64acl_sys_acl_get_file,
.sys_acl_get_fd_fn = tru64acl_sys_acl_get_fd,
.sys_acl_blob_get_file_fn = posix_sys_acl_blob_get_file,
.sys_acl_blob_get_fd_fn = posix_sys_acl_blob_get_fd,
.sys_acl_set_file_fn = tru64acl_sys_acl_set_file,
.sys_acl_set_fd_fn = tru64acl_sys_acl_set_fd,
.sys_acl_delete_def_file_fn = tru64acl_sys_acl_delete_def_file,
};
static_decl_vfs;
NTSTATUS vfs_tru64acl_init(TALLOC_CTX *ctx)
{
return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "tru64acl",
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&tru64acl_fns);
}
/* ENTE */