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vfs_hpuxacl.c
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/*
* Unix SMB/Netbios implementation.
* VFS module to get and set HP-UX 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/>.
*/
/*
* This module supports JFS (POSIX) ACLs on VxFS (Veritas * Filesystem).
* These are available on HP-UX 11.00 if JFS 3.3 is installed.
* On HP-UX 11i (11.11 and above) these ACLs are supported out of
* the box.
*
* There is another form of ACLs on HFS. These ACLs have a
* completely different API and their own set of userland tools.
* Since HFS seems to be considered deprecated, HFS acls
* are not supported. (They could be supported through a separate
* vfs-module if there is demand.)
*/
/* =================================================================
* NOTE:
*
* The original hpux-acl code in lib/sysacls.c was based upon the
* solaris acl code in the same file. Now for the new modularized
* acl implementation, I have taken the code from vfs_solarisacls.c
* and did similar adaptations as were done before, essentially
* reusing the original internal aclsort functions.
* The check for the presence of the acl() call has been adopted, and
* a check for the presence of the aclsort() call has been added.
*
* Michael Adam <[email protected]>
*
* ================================================================= */
#include "includes.h"
#include "system/filesys.h"
#include "smbd/smbd.h"
#include "modules/vfs_hpuxacl.h"
/*
* including standard header <sys/aclv.h>
*
* included here as a quick hack for the special HP-UX-situation:
*
* The problem is that, on HP-UX, jfs/posix acls are
* defined in <sys/aclv.h>, while the deprecated hfs acls
* are defined inside <sys/acl.h>.
*
*/
/* GROUP is defined somewhere else so undef it here... */
#undef GROUP
#include <sys/aclv.h>
/* dl.h: needed to check for acl call via shl_findsym */
#include <dl.h>
typedef struct acl HPUX_ACE_T;
typedef struct acl *HPUX_ACL_T;
typedef int HPUX_ACL_TAG_T; /* the type of an ACL entry */
typedef ushort HPUX_PERM_T;
/* Structure to capture the count for each type of ACE.
* (for hpux_internal_aclsort */
struct hpux_acl_types {
int n_user;
int n_def_user;
int n_user_obj;
int n_def_user_obj;
int n_group;
int n_def_group;
int n_group_obj;
int n_def_group_obj;
int n_other;
int n_other_obj;
int n_def_other_obj;
int n_class_obj;
int n_def_class_obj;
int n_illegal_obj;
};
/* for convenience: check if hpux acl entry is a default entry? */
#define _IS_DEFAULT(ace) ((ace).a_type & ACL_DEFAULT)
#define _IS_OF_TYPE(ace, type) ( \
(((type) == SMB_ACL_TYPE_ACCESS) && !_IS_DEFAULT(ace)) \
|| \
(((type) == SMB_ACL_TYPE_DEFAULT) && _IS_DEFAULT(ace)) \
)
/* prototypes for private functions */
static HPUX_ACL_T hpux_acl_init(int count);
static bool smb_acl_to_hpux_acl(SMB_ACL_T smb_acl,
HPUX_ACL_T *solariacl, int *count,
SMB_ACL_TYPE_T type);
static SMB_ACL_T hpux_acl_to_smb_acl(HPUX_ACL_T hpuxacl, int count,
SMB_ACL_TYPE_T type, TALLOC_CTX *mem_ctx);
static HPUX_ACL_TAG_T smb_tag_to_hpux_tag(SMB_ACL_TAG_T smb_tag);
static SMB_ACL_TAG_T hpux_tag_to_smb_tag(HPUX_ACL_TAG_T hpux_tag);
static bool hpux_add_to_acl(HPUX_ACL_T *hpux_acl, int *count,
HPUX_ACL_T add_acl, int add_count, SMB_ACL_TYPE_T type);
static bool hpux_acl_get_file(const char *name, HPUX_ACL_T *hpuxacl,
int *count);
static SMB_ACL_PERM_T hpux_perm_to_smb_perm(const HPUX_PERM_T perm);
static HPUX_PERM_T smb_perm_to_hpux_perm(const SMB_ACL_PERM_T perm);
#if 0
static bool hpux_acl_check(HPUX_ACL_T hpux_acl, int count);
#endif
/* aclsort (internal) and helpers: */
static bool hpux_acl_sort(HPUX_ACL_T acl, int count);
static int hpux_internal_aclsort(int acl_count, int calclass, HPUX_ACL_T aclp);
static void hpux_count_obj(int acl_count, HPUX_ACL_T aclp,
struct hpux_acl_types *acl_type_count);
static void hpux_swap_acl_entries(HPUX_ACE_T *aclp0, HPUX_ACE_T *aclp1);
static bool hpux_prohibited_duplicate_type(int acl_type);
static bool hpux_acl_call_present(void);
static bool hpux_aclsort_call_present(void);
/* public functions - the api */
static SMB_ACL_T hpuxacl_sys_acl_get_file(vfs_handle_struct *handle,
const struct smb_filename *smb_fname,
SMB_ACL_TYPE_T type,
TALLOC_CTX *mem_ctx)
{
SMB_ACL_T result = NULL;
int count;
HPUX_ACL_T hpux_acl = NULL;
const char *path_p = smb_fname->base_name;
DEBUG(10, ("hpuxacl_sys_acl_get_file called for file '%s'.\n",
path_p));
if(hpux_acl_call_present() == False) {
/* Looks like we don't have the acl() system call on HPUX.
* May be the system doesn't have the latest version of JFS.
*/
goto done;
}
if (type != SMB_ACL_TYPE_ACCESS && type != SMB_ACL_TYPE_DEFAULT) {
DEBUG(10, ("invalid SMB_ACL_TYPE given (%d)\n", type));
errno = EINVAL;
goto done;
}
DEBUGADD(10, ("getting %s acl\n",
((type == SMB_ACL_TYPE_ACCESS) ? "access" : "default")));
if (!hpux_acl_get_file(path_p, &hpux_acl, &count)) {
goto done;
}
result = hpux_acl_to_smb_acl(hpux_acl, count, type, mem_ctx);
if (result == NULL) {
DEBUG(10, ("conversion hpux_acl -> smb_acl failed (%s).\n",
strerror(errno)));
}
done:
DEBUG(10, ("hpuxacl_sys_acl_get_file %s.\n",
((result == NULL) ? "failed" : "succeeded" )));
SAFE_FREE(hpux_acl);
return result;
}
/*
* get the access ACL of a file referred to by a fd
*/
SMB_ACL_T hpuxacl_sys_acl_get_fd(vfs_handle_struct *handle,
files_struct *fsp,
SMB_ACL_TYPE_T type,
TALLOC_CTX *mem_ctx)
{
/*
* HPUX doesn't have the facl call. Fake it using the path.... JRA.
*/
/*
* We know we're in the same conn context. So we
* can use the relative path.
*/
DEBUG(10, ("redirecting call of hpuxacl_sys_acl_get_fd to "
"hpuxacl_sys_acl_get_file (no facl syscall on HPUX).\n"));
return hpuxacl_sys_acl_get_file(handle,
fsp->fsp_name->base_name,
type,
mem_ctx);
}
int hpuxacl_sys_acl_set_file(vfs_handle_struct *handle,
const struct smb_filename *smb_fname_in,
SMB_ACL_TYPE_T type,
SMB_ACL_T theacl)
{
int ret = -1;
HPUX_ACL_T hpux_acl = NULL;
int count;
struct smb_filename *smb_fname = NULL;
NTSTATUS status;
DEBUG(10, ("hpuxacl_sys_acl_set_file called for file '%s'\n",
name));
smb_fname = cp_smb_filename(talloc_tos(), smb_fname_in);
if (smb_fname == NULL) {
status = NT_STATUS_NO_MEMORY;
goto done;
}
if(hpux_acl_call_present() == False) {
/* Looks like we don't have the acl() system call on HPUX.
* May be the system doesn't have the latest version of JFS.
*/
goto done;
}
if ((type != SMB_ACL_TYPE_ACCESS) && (type != SMB_ACL_TYPE_DEFAULT)) {
errno = EINVAL;
DEBUG(10, ("invalid smb acl type given (%d).\n", type));
goto done;
}
DEBUGADD(10, ("setting %s acl\n",
((type == SMB_ACL_TYPE_ACCESS) ? "access" : "default")));
if(!smb_acl_to_hpux_acl(theacl, &hpux_acl, &count, type)) {
DEBUG(10, ("conversion smb_acl -> hpux_acl failed (%s).\n",
strerror(errno)));
goto done;
}
/*
* We can directly use SMB_VFS_STAT here, as if this was a
* POSIX call on a symlink, we've already refused it.
* For a Windows acl mapped call on a symlink, we want to follow
* it.
*/
ret = SMB_VFS_STAT(handle->conn, smb_fname);
if (ret != 0) {
DEBUG(10, ("Error in stat call: %s\n", strerror(errno)));
goto done;
}
if (S_ISDIR(smb_fname->st.st_ex_mode)) {
/*
* if the file is a directory, there is extra work to do:
* since the hpux acl call stores both the access acl and
* the default acl as provided, we have to get the acl part
* that has _not_ been specified in "type" from the file first
* and concatenate it with the acl provided.
*/
HPUX_ACL_T other_acl;
int other_count;
SMB_ACL_TYPE_T other_type;
other_type = (type == SMB_ACL_TYPE_ACCESS)
? SMB_ACL_TYPE_DEFAULT
: SMB_ACL_TYPE_ACCESS;
DEBUGADD(10, ("getting acl from filesystem\n"));
if (!hpux_acl_get_file(smb_fname->base_name, &other_acl,
&other_count)) {
DEBUG(10, ("error getting acl from directory\n"));
goto done;
}
DEBUG(10, ("adding %s part of fs acl to given acl\n",
((other_type == SMB_ACL_TYPE_ACCESS)
? "access"
: "default")));
if (!hpux_add_to_acl(&hpux_acl, &count, other_acl,
other_count, other_type))
{
DEBUG(10, ("error adding other acl.\n"));
SAFE_FREE(other_acl);
goto done;
}
SAFE_FREE(other_acl);
}
else if (type != SMB_ACL_TYPE_ACCESS) {
errno = EINVAL;
goto done;
}
if (!hpux_acl_sort(hpux_acl, count)) {
DEBUG(10, ("resulting acl is not valid!\n"));
goto done;
}
DEBUG(10, ("resulting acl is valid.\n"));
ret = acl(discard_const_p(char, smb_fname->base_name), ACL_SET, count,
hpux_acl);
if (ret != 0) {
DEBUG(0, ("ERROR calling acl: %s\n", strerror(errno)));
}
done:
DEBUG(10, ("hpuxacl_sys_acl_set_file %s.\n",
((ret != 0) ? "failed" : "succeeded")));
TALLOC_FREE(smb_fname);
SAFE_FREE(hpux_acl);
return ret;
}
/*
* set the access ACL on the file referred to by a fd
*/
int hpuxacl_sys_acl_set_fd(vfs_handle_struct *handle,
files_struct *fsp,
SMB_ACL_TYPE_T type,
SMB_ACL_T theacl)
{
/*
* HPUX doesn't have the facl call. Fake it using the path.... JRA.
*/
/*
* We know we're in the same conn context. So we
* can use the relative path.
*/
DEBUG(10, ("redirecting call of hpuxacl_sys_acl_set_fd to "
"hpuxacl_sys_acl_set_file (no facl syscall on HPUX)\n"));
return hpuxacl_sys_acl_set_file(handle,
fsp->fsp_name->base_name,
type, theacl);
}
/*
* delete the default ACL of a directory
*
* This is achieved by fetching the access ACL and rewriting it
* directly, via the hpux system call: the ACL_SET call on
* directories writes both the access and the default ACL as provided.
*
* XXX: posix acl_delete_def_file returns an error if
* the file referred to by path is not a directory.
* this function does not complain but the actions
* have no effect on a file other than a directory.
* But sys_acl_delete_default_file is only called in
* smbd/posixacls.c after having checked that the file
* is a directory, anyways. So implementing the extra
* check is considered unnecessary. --- Agreed? XXX
*/
int hpuxacl_sys_acl_delete_def_fd(vfs_handle_struct *handle,
files_struct *fsp)
{
SMB_ACL_T smb_acl;
int ret = -1;
HPUX_ACL_T hpux_acl;
int count;
DBG_DEBUG("entering hpuxacl_sys_acl_delete_def_fd.\n");
smb_acl = hpuxacl_sys_acl_get_file(handle, fsp->fsp_name->base_name,
SMB_ACL_TYPE_ACCESS);
if (smb_acl == NULL) {
DBG_DEBUG("getting file acl failed!\n");
goto done;
}
if (!smb_acl_to_hpux_acl(smb_acl, &hpux_acl, &count,
SMB_ACL_TYPE_ACCESS))
{
DBG_DEBUG("conversion smb_acl -> hpux_acl failed.\n");
goto done;
}
if (!hpux_acl_sort(hpux_acl, count)) {
DBG_DEBUG("resulting acl is not valid!\n");
goto done;
}
ret = acl(discard_const_p(char, fsp->fsp_name->base_name),
ACL_SET, count, hpux_acl);
if (ret != 0) {
DBG_DEBUG("settinge file acl failed!\n");
}
done:
DBG_DEBUG("hpuxacl_sys_acl_delete_def_fd %s.\n",
((ret != 0) ? "failed" : "succeeded" ));
TALLOC_FREE(smb_acl);
return ret;
}
/*
* private functions
*/
static HPUX_ACL_T hpux_acl_init(int count)
{
HPUX_ACL_T hpux_acl =
(HPUX_ACL_T)SMB_MALLOC(sizeof(HPUX_ACE_T) * count);
if (hpux_acl == NULL) {
errno = ENOMEM;
}
return hpux_acl;
}
/*
* Convert the SMB acl to the ACCESS or DEFAULT part of a
* hpux ACL, as desired.
*/
static bool smb_acl_to_hpux_acl(SMB_ACL_T smb_acl,
HPUX_ACL_T *hpux_acl, int *count,
SMB_ACL_TYPE_T type)
{
bool ret = False;
int i;
int check_which, check_rc;
DEBUG(10, ("entering smb_acl_to_hpux_acl\n"));
*hpux_acl = NULL;
*count = 0;
for (i = 0; i < smb_acl->count; i++) {
const struct smb_acl_entry *smb_entry = &(smb_acl->acl[i]);
HPUX_ACE_T hpux_entry;
ZERO_STRUCT(hpux_entry);
hpux_entry.a_type = smb_tag_to_hpux_tag(smb_entry->a_type);
if (hpux_entry.a_type == 0) {
DEBUG(10, ("smb_tag to hpux_tag failed\n"));
goto fail;
}
switch(hpux_entry.a_type) {
case USER:
DEBUG(10, ("got tag type USER with uid %d\n",
smb_entry->info.user.uid));
hpux_entry.a_id = (uid_t)smb_entry->info.user.uid;
break;
case GROUP:
DEBUG(10, ("got tag type GROUP with gid %d\n",
smb_entry->info.group.gid));
hpux_entry.a_id = (uid_t)smb_entry->info.group.gid;
break;
default:
break;
}
if (type == SMB_ACL_TYPE_DEFAULT) {
DEBUG(10, ("adding default bit to hpux ace\n"));
hpux_entry.a_type |= ACL_DEFAULT;
}
hpux_entry.a_perm =
smb_perm_to_hpux_perm(smb_entry->a_perm);
DEBUG(10, ("assembled the following hpux ace:\n"));
DEBUGADD(10, (" - type: 0x%04x\n", hpux_entry.a_type));
DEBUGADD(10, (" - id: %d\n", hpux_entry.a_id));
DEBUGADD(10, (" - perm: o%o\n", hpux_entry.a_perm));
if (!hpux_add_to_acl(hpux_acl, count, &hpux_entry,
1, type))
{
DEBUG(10, ("error adding acl entry\n"));
goto fail;
}
DEBUG(10, ("count after adding: %d (i: %d)\n", *count, i));
DEBUG(10, ("test, if entry has been copied into acl:\n"));
DEBUGADD(10, (" - type: 0x%04x\n",
(*hpux_acl)[(*count)-1].a_type));
DEBUGADD(10, (" - id: %d\n",
(*hpux_acl)[(*count)-1].a_id));
DEBUGADD(10, (" - perm: o%o\n",
(*hpux_acl)[(*count)-1].a_perm));
}
ret = True;
goto done;
fail:
SAFE_FREE(*hpux_acl);
done:
DEBUG(10, ("smb_acl_to_hpux_acl %s\n",
((ret == True) ? "succeeded" : "failed")));
return ret;
}
/*
* convert either the access or the default part of a
* soaris acl to the SMB_ACL format.
*/
static SMB_ACL_T hpux_acl_to_smb_acl(HPUX_ACL_T hpux_acl, int count,
SMB_ACL_TYPE_T type, TALLOC_CTX *mem_ctx)
{
SMB_ACL_T result;
int i;
if ((result = sys_acl_init(mem_ctx)) == NULL) {
DEBUG(10, ("error allocating memory for SMB_ACL\n"));
goto fail;
}
for (i = 0; i < count; i++) {
SMB_ACL_ENTRY_T smb_entry;
SMB_ACL_PERM_T smb_perm;
if (!_IS_OF_TYPE(hpux_acl[i], type)) {
continue;
}
result->acl = talloc_realloc(result, result->acl, struct smb_acl_entry, result->count + 1);
if (result->acl == NULL) {
DEBUG(10, ("error reallocating memory for SMB_ACL\n"));
goto fail;
}
smb_entry = &result->acl[result->count];
if (sys_acl_set_tag_type(smb_entry,
hpux_tag_to_smb_tag(hpux_acl[i].a_type)) != 0)
{
DEBUG(10, ("invalid tag type given: 0x%04x\n",
hpux_acl[i].a_type));
goto fail;
}
/* intentionally not checking return code here: */
sys_acl_set_qualifier(smb_entry, (void *)&hpux_acl[i].a_id);
smb_perm = hpux_perm_to_smb_perm(hpux_acl[i].a_perm);
if (sys_acl_set_permset(smb_entry, &smb_perm) != 0) {
DEBUG(10, ("invalid permset given: %d\n",
hpux_acl[i].a_perm));
goto fail;
}
result->count += 1;
}
goto done;
fail:
TALLOC_FREE(result);
done:
DEBUG(10, ("hpux_acl_to_smb_acl %s\n",
((result == NULL) ? "failed" : "succeeded")));
return result;
}
static HPUX_ACL_TAG_T smb_tag_to_hpux_tag(SMB_ACL_TAG_T smb_tag)
{
HPUX_ACL_TAG_T hpux_tag = 0;
DEBUG(10, ("smb_tag_to_hpux_tag\n"));
DEBUGADD(10, (" --> got smb tag 0x%04x\n", smb_tag));
switch (smb_tag) {
case SMB_ACL_USER:
hpux_tag = USER;
break;
case SMB_ACL_USER_OBJ:
hpux_tag = USER_OBJ;
break;
case SMB_ACL_GROUP:
hpux_tag = GROUP;
break;
case SMB_ACL_GROUP_OBJ:
hpux_tag = GROUP_OBJ;
break;
case SMB_ACL_OTHER:
hpux_tag = OTHER_OBJ;
break;
case SMB_ACL_MASK:
hpux_tag = CLASS_OBJ;
break;
default:
DEBUGADD(10, (" !!! unknown smb tag type 0x%04x\n", smb_tag));
break;
}
DEBUGADD(10, (" --> determined hpux tag 0x%04x\n", hpux_tag));
return hpux_tag;
}
static SMB_ACL_TAG_T hpux_tag_to_smb_tag(HPUX_ACL_TAG_T hpux_tag)
{
SMB_ACL_TAG_T smb_tag = 0;
DEBUG(10, ("hpux_tag_to_smb_tag:\n"));
DEBUGADD(10, (" --> got hpux tag 0x%04x\n", hpux_tag));
hpux_tag &= ~ACL_DEFAULT;
switch (hpux_tag) {
case USER:
smb_tag = SMB_ACL_USER;
break;
case USER_OBJ:
smb_tag = SMB_ACL_USER_OBJ;
break;
case GROUP:
smb_tag = SMB_ACL_GROUP;
break;
case GROUP_OBJ:
smb_tag = SMB_ACL_GROUP_OBJ;
break;
case OTHER_OBJ:
smb_tag = SMB_ACL_OTHER;
break;
case CLASS_OBJ:
smb_tag = SMB_ACL_MASK;
break;
default:
DEBUGADD(10, (" !!! unknown hpux tag type: 0x%04x\n",
hpux_tag));
break;
}
DEBUGADD(10, (" --> determined smb tag 0x%04x\n", smb_tag));
return smb_tag;
}
/*
* The permission bits used in the following two permission conversion
* functions are same, but the functions make us independent of the concrete
* permission data types.
*/
static SMB_ACL_PERM_T hpux_perm_to_smb_perm(const HPUX_PERM_T perm)
{
SMB_ACL_PERM_T smb_perm = 0;
smb_perm |= ((perm & SMB_ACL_READ) ? SMB_ACL_READ : 0);
smb_perm |= ((perm & SMB_ACL_WRITE) ? SMB_ACL_WRITE : 0);
smb_perm |= ((perm & SMB_ACL_EXECUTE) ? SMB_ACL_EXECUTE : 0);
return smb_perm;
}
static HPUX_PERM_T smb_perm_to_hpux_perm(const SMB_ACL_PERM_T perm)
{
HPUX_PERM_T hpux_perm = 0;
hpux_perm |= ((perm & SMB_ACL_READ) ? SMB_ACL_READ : 0);
hpux_perm |= ((perm & SMB_ACL_WRITE) ? SMB_ACL_WRITE : 0);
hpux_perm |= ((perm & SMB_ACL_EXECUTE) ? SMB_ACL_EXECUTE : 0);
return hpux_perm;
}
static bool hpux_acl_get_file(const char *name, HPUX_ACL_T *hpux_acl,
int *count)
{
bool result = False;
static HPUX_ACE_T dummy_ace;
DEBUG(10, ("hpux_acl_get_file called for file '%s'\n", name));
/*
* The original code tries some INITIAL_ACL_SIZE
* and only did the ACL_CNT call upon failure
* (for performance reasons).
* For the sake of simplicity, I skip this for now.
*
* NOTE: There is a catch here on HP-UX: acl with cmd parameter
* ACL_CNT fails with errno EINVAL when called with a NULL
* pointer as last argument. So we need to use a dummy acl
* struct here (we make it static so it does not need to be
* instantiated or malloced each time this function is
* called). Btw: the count parameter does not seem to matter...
*/
*count = acl(discard_const_p(char, name), ACL_CNT, 0, &dummy_ace);
if (*count < 0) {
DEBUG(10, ("acl ACL_CNT failed: %s\n", strerror(errno)));
goto done;
}
*hpux_acl = hpux_acl_init(*count);
if (*hpux_acl == NULL) {
DEBUG(10, ("error allocating memory for hpux acl...\n"));
goto done;
}
*count = acl(discard_const_p(char, name), ACL_GET, *count, *hpux_acl);
if (*count < 0) {
DEBUG(10, ("acl ACL_GET failed: %s\n", strerror(errno)));
goto done;
}
result = True;
done:
DEBUG(10, ("hpux_acl_get_file %s.\n",
((result == True) ? "succeeded" : "failed" )));
return result;
}
/*
* Add entries to a hpux ACL.
*
* Entries are directly added to the hpuxacl parameter.
* if memory allocation fails, this may result in hpuxacl
* being NULL. if the resulting acl is to be checked and is
* not valid, it is kept in hpuxacl but False is returned.
*
* The type of ACEs (access/default) to be added to the ACL can
* be selected via the type parameter.
* I use the SMB_ACL_TYPE_T type here. Since SMB_ACL_TYPE_ACCESS
* is defined as "0", this means that one can only add either
* access or default ACEs from the given ACL, not both at the same
* time. If it should become necessary to add all of an ACL, one
* would have to replace this parameter by another type.
*/
static bool hpux_add_to_acl(HPUX_ACL_T *hpux_acl, int *count,
HPUX_ACL_T add_acl, int add_count,
SMB_ACL_TYPE_T type)
{
int i;
if ((type != SMB_ACL_TYPE_ACCESS) && (type != SMB_ACL_TYPE_DEFAULT))
{
DEBUG(10, ("invalid acl type given: %d\n", type));
errno = EINVAL;
return False;
}
for (i = 0; i < add_count; i++) {
if (!_IS_OF_TYPE(add_acl[i], type)) {
continue;
}
ADD_TO_ARRAY(NULL, HPUX_ACE_T, add_acl[i],
hpux_acl, count);
if (hpux_acl == NULL) {
DEBUG(10, ("error enlarging acl.\n"));
errno = ENOMEM;
return False;
}
}
return True;
}
/*
* sort the ACL and check it for validity
*
* [original comment from lib/sysacls.c:]
*
* if it's a minimal ACL with only 4 entries then we
* need to recalculate the mask permissions to make
* sure that they are the same as the GROUP_OBJ
* permissions as required by the UnixWare acl() system call.
*
* (note: since POSIX allows minimal ACLs which only contain
* 3 entries - ie there is no mask entry - we should, in theory,
* check for this and add a mask entry if necessary - however
* we "know" that the caller of this interface always specifies
* a mask, so in practice "this never happens" (tm) - if it *does*
* happen aclsort() will fail and return an error and someone will
* have to fix it...)
*/
static bool hpux_acl_sort(HPUX_ACL_T hpux_acl, int count)
{
int fixmask = (count <= 4);
if (hpux_internal_aclsort(count, fixmask, hpux_acl) != 0) {
errno = EINVAL;
return False;
}
return True;
}
/*
* Helpers for hpux_internal_aclsort:
* - hpux_count_obj
* - hpux_swap_acl_entries
* - hpux_prohibited_duplicate_type
* - hpux_get_needed_class_perm
*/
/* hpux_count_obj:
* Counts the different number of objects in a given array of ACL
* structures.
* Inputs:
*
* acl_count - Count of ACLs in the array of ACL strucutres.
* aclp - Array of ACL structures.
* acl_type_count - Pointer to acl_types structure. Should already be
* allocated.
* Output:
*
* acl_type_count - This structure is filled up with counts of various
* acl types.
*/
static void hpux_count_obj(int acl_count, HPUX_ACL_T aclp, struct hpux_acl_types *acl_type_count)
{
int i;
memset(acl_type_count, 0, sizeof(struct hpux_acl_types));
for(i=0;i<acl_count;i++) {
switch(aclp[i].a_type) {
case USER:
acl_type_count->n_user++;
break;
case USER_OBJ:
acl_type_count->n_user_obj++;
break;
case DEF_USER_OBJ:
acl_type_count->n_def_user_obj++;
break;
case GROUP:
acl_type_count->n_group++;
break;
case GROUP_OBJ:
acl_type_count->n_group_obj++;
break;
case DEF_GROUP_OBJ:
acl_type_count->n_def_group_obj++;
break;
case OTHER_OBJ:
acl_type_count->n_other_obj++;
break;
case DEF_OTHER_OBJ:
acl_type_count->n_def_other_obj++;
break;
case CLASS_OBJ:
acl_type_count->n_class_obj++;
break;
case DEF_CLASS_OBJ:
acl_type_count->n_def_class_obj++;
break;
case DEF_USER:
acl_type_count->n_def_user++;
break;
case DEF_GROUP:
acl_type_count->n_def_group++;
break;
default:
acl_type_count->n_illegal_obj++;
break;
}
}
}
/* hpux_swap_acl_entries: Swaps two ACL entries.
*
* Inputs: aclp0, aclp1 - ACL entries to be swapped.
*/
static void hpux_swap_acl_entries(HPUX_ACE_T *aclp0, HPUX_ACE_T *aclp1)
{
HPUX_ACE_T temp_acl;
temp_acl.a_type = aclp0->a_type;
temp_acl.a_id = aclp0->a_id;
temp_acl.a_perm = aclp0->a_perm;
aclp0->a_type = aclp1->a_type;
aclp0->a_id = aclp1->a_id;
aclp0->a_perm = aclp1->a_perm;
aclp1->a_type = temp_acl.a_type;
aclp1->a_id = temp_acl.a_id;
aclp1->a_perm = temp_acl.a_perm;
}
/* hpux_prohibited_duplicate_type
* Identifies if given ACL type can have duplicate entries or
* not.
*
* Inputs: acl_type - ACL Type.
*
* Outputs:
*
* Return..
*
* True - If the ACL type matches any of the prohibited types.
* False - If the ACL type doesn't match any of the prohibited types.
*/
static bool hpux_prohibited_duplicate_type(int acl_type)
{
switch(acl_type) {
case USER:
case GROUP:
case DEF_USER:
case DEF_GROUP:
return True;
default:
return False;
}
}
/* hpux_get_needed_class_perm
* Returns the permissions of a ACL structure only if the ACL
* type matches one of the pre-determined types for computing
* CLASS_OBJ permissions.
*
* Inputs: aclp - Pointer to ACL structure.
*/
static int hpux_get_needed_class_perm(struct acl *aclp)
{
switch(aclp->a_type) {
case USER:
case GROUP_OBJ:
case GROUP:
case DEF_USER_OBJ:
case DEF_USER:
case DEF_GROUP_OBJ:
case DEF_GROUP:
case DEF_CLASS_OBJ:
case DEF_OTHER_OBJ:
return aclp->a_perm;
default:
return 0;
}
}
/* hpux_internal_aclsort: aclsort for HPUX.
*
* -> The aclsort() system call is available on the latest HPUX General
* -> Patch Bundles. So for HPUX, we developed our version of aclsort
* -> function. Because, we don't want to update to a new
* -> HPUX GR bundle just for aclsort() call.
*
* aclsort sorts the array of ACL structures as per the description in
* aclsort man page. Refer to aclsort man page for more details
*
* Inputs:
*
* acl_count - Count of ACLs in the array of ACL structures.
* calclass - If this is not zero, then we compute the CLASS_OBJ
* permissions.
* aclp - Array of ACL structures.
*
* Outputs:
*
* aclp - Sorted array of ACL structures.
*
* Outputs:
*
* Returns 0 for success -1 for failure. Prints a message to the Samba
* debug log in case of failure.
*/
static int hpux_internal_aclsort(int acl_count, int calclass, HPUX_ACL_T aclp)
{
struct hpux_acl_types acl_obj_count;
int n_class_obj_perm = 0;
int i, j;
DEBUG(10,("Entering hpux_internal_aclsort. (calclass = %d)\n", calclass));
if (hpux_aclsort_call_present()) {
DEBUG(10, ("calling hpux aclsort\n"));
return aclsort(acl_count, calclass, aclp);
}
DEBUG(10, ("using internal aclsort\n"));
if(!acl_count) {
DEBUG(10,("Zero acl count passed. Returning Success\n"));
return 0;
}
if(aclp == NULL) {
DEBUG(0,("Null ACL pointer in hpux_acl_sort. Returning Failure. \n"));
return -1;
}
/* Count different types of ACLs in the ACLs array */
hpux_count_obj(acl_count, aclp, &acl_obj_count);
/* There should be only one entry each of type USER_OBJ, GROUP_OBJ,
* CLASS_OBJ and OTHER_OBJ
*/
if ( (acl_obj_count.n_user_obj != 1) ||
(acl_obj_count.n_group_obj != 1) ||
(acl_obj_count.n_class_obj != 1) ||
(acl_obj_count.n_other_obj != 1) )
{
DEBUG(0,("hpux_internal_aclsort: More than one entry or no entries for \
USER OBJ or GROUP_OBJ or OTHER_OBJ or CLASS_OBJ\n"));
return -1;
}
/* If any of the default objects are present, there should be only
* one of them each.
*/
if ( (acl_obj_count.n_def_user_obj > 1) ||
(acl_obj_count.n_def_group_obj > 1) ||
(acl_obj_count.n_def_other_obj > 1) ||
(acl_obj_count.n_def_class_obj > 1) )
{
DEBUG(0,("hpux_internal_aclsort: More than one entry for DEF_CLASS_OBJ \