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samba-mirror/source3/modules/vfs_gpfs.c

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/*
Unix SMB/CIFS implementation.
Wrap gpfs calls in vfs functions.
Copyright (C) Christian Ambach <cambach1@de.ibm.com> 2006
Major code contributions by Chetan Shringarpure <chetan.sh@in.ibm.com>
and Gomati Mohanan <gomati.mohanan@in.ibm.com>
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"
#undef DBGC_CLASS
#define DBGC_CLASS DBGC_VFS
#include <gpfs_gpl.h>
#include "nfs4_acls.h"
#include "vfs_gpfs.h"
static int vfs_gpfs_kernel_flock(vfs_handle_struct *handle, files_struct *fsp,
uint32 share_mode, uint32 access_mask)
{
START_PROFILE(syscall_kernel_flock);
kernel_flock(fsp->fh->fd, share_mode, access_mask);
if (!set_gpfs_sharemode(fsp, access_mask, fsp->share_access)) {
return -1;
}
END_PROFILE(syscall_kernel_flock);
return 0;
}
static int vfs_gpfs_close(vfs_handle_struct *handle, files_struct *fsp)
{
if ((fsp->fh != NULL) && (fsp->fh->fd != -1)) {
set_gpfs_sharemode(fsp, 0, 0);
}
return SMB_VFS_NEXT_CLOSE(handle, fsp);
}
static int vfs_gpfs_setlease(vfs_handle_struct *handle, files_struct *fsp,
int leasetype)
{
int ret;
START_PROFILE(syscall_linux_setlease);
if ( linux_set_lease_sighandler(fsp->fh->fd) == -1)
return -1;
ret = set_gpfs_lease(fsp->fh->fd,leasetype);
if ( ret < 0 ) {
/* This must have come from GPFS not being available */
/* or some other error, hence call the default */
ret = linux_setlease(fsp->fh->fd, leasetype);
}
END_PROFILE(syscall_linux_setlease);
return ret;
}
static int vfs_gpfs_get_real_filename(struct vfs_handle_struct *handle,
const char *path,
const char *name,
TALLOC_CTX *mem_ctx,
char **found_name)
{
int result;
char *full_path;
char real_pathname[PATH_MAX+1];
int buflen;
full_path = talloc_asprintf(talloc_tos(), "%s/%s", path, name);
if (full_path == NULL) {
errno = ENOMEM;
return -1;
}
buflen = sizeof(real_pathname) - 1;
result = smbd_gpfs_get_realfilename_path(full_path, real_pathname,
&buflen);
TALLOC_FREE(full_path);
if ((result == -1) && (errno == ENOSYS)) {
return SMB_VFS_NEXT_GET_REAL_FILENAME(
handle, path, name, mem_ctx, found_name);
}
if (result == -1) {
DEBUG(10, ("smbd_gpfs_get_realfilename_path returned %s\n",
strerror(errno)));
return -1;
}
/*
* GPFS does not necessarily null-terminate the returned path
* but instead returns the buffer length in buflen.
*/
if (buflen < sizeof(real_pathname)) {
real_pathname[buflen] = '\0';
} else {
real_pathname[sizeof(real_pathname)-1] = '\0';
}
DEBUG(10, ("smbd_gpfs_get_realfilename_path: %s/%s -> %s\n",
path, name, real_pathname));
name = strrchr_m(real_pathname, '/');
if (name == NULL) {
errno = ENOENT;
return -1;
}
*found_name = talloc_strdup(mem_ctx, name+1);
if (*found_name == NULL) {
errno = ENOMEM;
return -1;
}
return 0;
}
static void gpfs_dumpacl(int level, struct gpfs_acl *gacl)
{
int i;
if (gacl==NULL)
{
DEBUG(0, ("gpfs acl is NULL\n"));
return;
}
DEBUG(level, ("gpfs acl: nace: %d, type:%d, version:%d, level:%d, len:%d\n",
gacl->acl_nace, gacl->acl_type, gacl->acl_version, gacl->acl_level, gacl->acl_len));
for(i=0; i<gacl->acl_nace; i++)
{
struct gpfs_ace_v4 *gace = gacl->ace_v4 + i;
DEBUG(level, ("\tace[%d]: type:%d, flags:0x%x, mask:0x%x, iflags:0x%x, who:%u\n",
i, gace->aceType, gace->aceFlags, gace->aceMask,
gace->aceIFlags, gace->aceWho));
}
}
static struct gpfs_acl *gpfs_getacl_alloc(const char *fname, gpfs_aclType_t type)
{
struct gpfs_acl *acl;
size_t len = 200;
int ret;
TALLOC_CTX *mem_ctx = talloc_tos();
acl = (struct gpfs_acl *)TALLOC_SIZE(mem_ctx, len);
if (acl == NULL) {
errno = ENOMEM;
return NULL;
}
acl->acl_len = len;
acl->acl_level = 0;
acl->acl_version = 0;
acl->acl_type = type;
ret = smbd_gpfs_getacl((char *)fname, GPFS_GETACL_STRUCT | GPFS_ACL_SAMBA, acl);
if ((ret != 0) && (errno == ENOSPC)) {
struct gpfs_acl *new_acl = (struct gpfs_acl *)TALLOC_SIZE(
mem_ctx, acl->acl_len + sizeof(struct gpfs_acl));
if (new_acl == NULL) {
errno = ENOMEM;
return NULL;
}
new_acl->acl_len = acl->acl_len;
new_acl->acl_level = acl->acl_level;
new_acl->acl_version = acl->acl_version;
new_acl->acl_type = acl->acl_type;
acl = new_acl;
ret = smbd_gpfs_getacl((char *)fname, GPFS_GETACL_STRUCT | GPFS_ACL_SAMBA, acl);
}
if (ret != 0)
{
DEBUG(8, ("smbd_gpfs_getacl failed with %s\n",strerror(errno)));
return NULL;
}
return acl;
}
/* Tries to get nfs4 acls and returns SMB ACL allocated.
* On failure returns 1 if it got non-NFSv4 ACL to prompt
* retry with POSIX ACL checks.
* On failure returns -1 if there is system (GPFS) error, check errno.
* Returns 0 on success
*/
static int gpfs_get_nfs4_acl(const char *fname, SMB4ACL_T **ppacl)
{
int i;
struct gpfs_acl *gacl = NULL;
DEBUG(10, ("gpfs_get_nfs4_acl invoked for %s\n", fname));
/* First get the real acl length */
gacl = gpfs_getacl_alloc(fname, 0);
if (gacl == NULL) {
DEBUG(9, ("gpfs_getacl failed for %s with %s\n",
fname, strerror(errno)));
return -1;
}
if (gacl->acl_type != GPFS_ACL_TYPE_NFS4) {
DEBUG(10, ("Got non-nfsv4 acl\n"));
/* Retry with POSIX ACLs check */
return 1;
}
*ppacl = smb_create_smb4acl();
DEBUG(10, ("len: %d, level: %d, version: %d, nace: %d\n",
gacl->acl_len, gacl->acl_level, gacl->acl_version,
gacl->acl_nace));
for (i=0; i<gacl->acl_nace; i++) {
struct gpfs_ace_v4 *gace = &gacl->ace_v4[i];
SMB_ACE4PROP_T smbace;
DEBUG(10, ("type: %d, iflags: %x, flags: %x, mask: %x, "
"who: %d\n", gace->aceType, gace->aceIFlags,
gace->aceFlags, gace->aceMask, gace->aceWho));
ZERO_STRUCT(smbace);
if (gace->aceIFlags & ACE4_IFLAG_SPECIAL_ID) {
smbace.flags |= SMB_ACE4_ID_SPECIAL;
switch (gace->aceWho) {
case ACE4_SPECIAL_OWNER:
smbace.who.special_id = SMB_ACE4_WHO_OWNER;
break;
case ACE4_SPECIAL_GROUP:
smbace.who.special_id = SMB_ACE4_WHO_GROUP;
break;
case ACE4_SPECIAL_EVERYONE:
smbace.who.special_id = SMB_ACE4_WHO_EVERYONE;
break;
default:
DEBUG(8, ("invalid special gpfs id %d "
"ignored\n", gace->aceWho));
continue; /* don't add it */
}
} else {
if (gace->aceFlags & ACE4_FLAG_GROUP_ID)
smbace.who.gid = gace->aceWho;
else
smbace.who.uid = gace->aceWho;
}
/* remove redundent deny entries */
if (i > 0 && gace->aceType == SMB_ACE4_ACCESS_DENIED_ACE_TYPE) {
struct gpfs_ace_v4 *prev = &gacl->ace_v4[i-1];
if (prev->aceType == SMB_ACE4_ACCESS_ALLOWED_ACE_TYPE &&
prev->aceFlags == gace->aceFlags &&
prev->aceIFlags == gace->aceIFlags &&
(gace->aceMask & prev->aceMask) == 0 &&
gace->aceWho == prev->aceWho) {
/* its redundent - skip it */
continue;
}
}
smbace.aceType = gace->aceType;
smbace.aceFlags = gace->aceFlags;
smbace.aceMask = gace->aceMask;
smb_add_ace4(*ppacl, &smbace);
}
return 0;
}
static NTSTATUS gpfsacl_fget_nt_acl(vfs_handle_struct *handle,
files_struct *fsp, uint32 security_info,
SEC_DESC **ppdesc)
{
SMB4ACL_T *pacl = NULL;
int result;
*ppdesc = NULL;
result = gpfs_get_nfs4_acl(fsp->fsp_name->base_name, &pacl);
if (result == 0)
return smb_fget_nt_acl_nfs4(fsp, security_info, ppdesc, pacl);
if (result > 0) {
DEBUG(10, ("retrying with posix acl...\n"));
return posix_fget_nt_acl(fsp, security_info, ppdesc);
}
/* GPFS ACL was not read, something wrong happened, error code is set in errno */
return map_nt_error_from_unix(errno);
}
static NTSTATUS gpfsacl_get_nt_acl(vfs_handle_struct *handle,
const char *name,
uint32 security_info, SEC_DESC **ppdesc)
{
SMB4ACL_T *pacl = NULL;
int result;
*ppdesc = NULL;
result = gpfs_get_nfs4_acl(name, &pacl);
if (result == 0)
return smb_get_nt_acl_nfs4(handle->conn, name, security_info, ppdesc, pacl);
if (result > 0) {
DEBUG(10, ("retrying with posix acl...\n"));
return posix_get_nt_acl(handle->conn, name, security_info, ppdesc);
}
/* GPFS ACL was not read, something wrong happened, error code is set in errno */
return map_nt_error_from_unix(errno);
}
static bool gpfsacl_process_smbacl(files_struct *fsp, SMB4ACL_T *smbacl)
{
int ret;
gpfs_aclLen_t gacl_len;
SMB4ACE_T *smbace;
struct gpfs_acl *gacl;
TALLOC_CTX *mem_ctx = talloc_tos();
gacl_len = sizeof(struct gpfs_acl) +
(smb_get_naces(smbacl)-1)*sizeof(gpfs_ace_v4_t);
2009-04-05 09:31:30 +04:00
gacl = (struct gpfs_acl *)TALLOC_SIZE(mem_ctx, gacl_len);
if (gacl == NULL) {
DEBUG(0, ("talloc failed\n"));
errno = ENOMEM;
return False;
}
gacl->acl_len = gacl_len;
gacl->acl_level = 0;
gacl->acl_version = GPFS_ACL_VERSION_NFS4;
gacl->acl_type = GPFS_ACL_TYPE_NFS4;
gacl->acl_nace = 0; /* change later... */
for (smbace=smb_first_ace4(smbacl); smbace!=NULL; smbace = smb_next_ace4(smbace)) {
struct gpfs_ace_v4 *gace = &gacl->ace_v4[gacl->acl_nace];
SMB_ACE4PROP_T *aceprop = smb_get_ace4(smbace);
gace->aceType = aceprop->aceType;
gace->aceFlags = aceprop->aceFlags;
gace->aceMask = aceprop->aceMask;
/*
* GPFS can't distinguish between WRITE and APPEND on
* files, so one being set without the other is an
* error. Sorry for the many ()'s :-)
*/
if (!fsp->is_directory
&&
((((gace->aceMask & ACE4_MASK_WRITE) == 0)
&& ((gace->aceMask & ACE4_MASK_APPEND) != 0))
||
(((gace->aceMask & ACE4_MASK_WRITE) != 0)
&& ((gace->aceMask & ACE4_MASK_APPEND) == 0)))
&&
lp_parm_bool(fsp->conn->params->service, "gpfs",
"merge_writeappend", True)) {
DEBUG(2, ("vfs_gpfs.c: file [%s]: ACE contains "
"WRITE^APPEND, setting WRITE|APPEND\n",
fsp_str_dbg(fsp)));
gace->aceMask |= ACE4_MASK_WRITE|ACE4_MASK_APPEND;
}
gace->aceIFlags = (aceprop->flags&SMB_ACE4_ID_SPECIAL) ? ACE4_IFLAG_SPECIAL_ID : 0;
if (aceprop->flags&SMB_ACE4_ID_SPECIAL)
{
switch(aceprop->who.special_id)
{
case SMB_ACE4_WHO_EVERYONE:
gace->aceWho = ACE4_SPECIAL_EVERYONE;
break;
case SMB_ACE4_WHO_OWNER:
gace->aceWho = ACE4_SPECIAL_OWNER;
break;
case SMB_ACE4_WHO_GROUP:
gace->aceWho = ACE4_SPECIAL_GROUP;
break;
default:
DEBUG(8, ("unsupported special_id %d\n", aceprop->who.special_id));
continue; /* don't add it !!! */
}
} else {
/* just only for the type safety... */
if (aceprop->aceFlags&SMB_ACE4_IDENTIFIER_GROUP)
gace->aceWho = aceprop->who.gid;
else
gace->aceWho = aceprop->who.uid;
}
gacl->acl_nace++;
}
ret = smbd_gpfs_putacl(fsp->fsp_name->base_name,
GPFS_PUTACL_STRUCT | GPFS_ACL_SAMBA, gacl);
if (ret != 0) {
DEBUG(8, ("gpfs_putacl failed with %s\n", strerror(errno)));
gpfs_dumpacl(8, gacl);
return False;
}
DEBUG(10, ("gpfs_putacl succeeded\n"));
return True;
}
static NTSTATUS gpfsacl_set_nt_acl_internal(files_struct *fsp, uint32 security_info_sent, const SEC_DESC *psd)
{
struct gpfs_acl *acl;
NTSTATUS result = NT_STATUS_ACCESS_DENIED;
acl = gpfs_getacl_alloc(fsp->fsp_name->base_name, 0);
if (acl == NULL)
return result;
if (acl->acl_version&GPFS_ACL_VERSION_NFS4)
{
if (lp_parm_bool(fsp->conn->params->service, "gpfs",
"refuse_dacl_protected", false)
&& (psd->type&SEC_DESC_DACL_PROTECTED)) {
DEBUG(2, ("Rejecting unsupported ACL with DACL_PROTECTED bit set\n"));
return NT_STATUS_NOT_SUPPORTED;
}
result = smb_set_nt_acl_nfs4(
fsp, security_info_sent, psd,
gpfsacl_process_smbacl);
} else { /* assume POSIX ACL - by default... */
result = set_nt_acl(fsp, security_info_sent, psd);
}
return result;
}
static NTSTATUS gpfsacl_fset_nt_acl(vfs_handle_struct *handle, files_struct *fsp, uint32 security_info_sent, const SEC_DESC *psd)
{
return gpfsacl_set_nt_acl_internal(fsp, security_info_sent, psd);
}
static SMB_ACL_T gpfs2smb_acl(const struct gpfs_acl *pacl)
{
SMB_ACL_T result;
int i;
result = sys_acl_init(pacl->acl_nace);
if (result == NULL) {
errno = ENOMEM;
return NULL;
}
result->count = pacl->acl_nace;
for (i=0; i<pacl->acl_nace; i++) {
struct smb_acl_entry *ace = &result->acl[i];
const struct gpfs_ace_v1 *g_ace = &pacl->ace_v1[i];
DEBUG(10, ("Converting type %d id %lu perm %x\n",
(int)g_ace->ace_type, (unsigned long)g_ace->ace_who,
(int)g_ace->ace_perm));
switch (g_ace->ace_type) {
case GPFS_ACL_USER:
ace->a_type = SMB_ACL_USER;
ace->uid = (uid_t)g_ace->ace_who;
break;
case GPFS_ACL_USER_OBJ:
ace->a_type = SMB_ACL_USER_OBJ;
break;
case GPFS_ACL_GROUP:
ace->a_type = SMB_ACL_GROUP;
ace->gid = (gid_t)g_ace->ace_who;
break;
case GPFS_ACL_GROUP_OBJ:
ace->a_type = SMB_ACL_GROUP_OBJ;
break;
case GPFS_ACL_OTHER:
ace->a_type = SMB_ACL_OTHER;
break;
case GPFS_ACL_MASK:
ace->a_type = SMB_ACL_MASK;
break;
default:
DEBUG(10, ("Got invalid ace_type: %d\n",
g_ace->ace_type));
errno = EINVAL;
SAFE_FREE(result);
return NULL;
}
ace->a_perm = 0;
ace->a_perm |= (g_ace->ace_perm & ACL_PERM_READ) ?
SMB_ACL_READ : 0;
ace->a_perm |= (g_ace->ace_perm & ACL_PERM_WRITE) ?
SMB_ACL_WRITE : 0;
ace->a_perm |= (g_ace->ace_perm & ACL_PERM_EXECUTE) ?
SMB_ACL_EXECUTE : 0;
DEBUGADD(10, ("Converted to %d perm %x\n",
ace->a_type, ace->a_perm));
}
return result;
}
static SMB_ACL_T gpfsacl_get_posix_acl(const char *path, gpfs_aclType_t type)
{
struct gpfs_acl *pacl;
SMB_ACL_T result = NULL;
pacl = gpfs_getacl_alloc(path, type);
if (pacl == NULL) {
DEBUG(10, ("gpfs_getacl failed for %s with %s\n",
path, strerror(errno)));
if (errno == 0) {
errno = EINVAL;
}
goto done;
}
if (pacl->acl_version != GPFS_ACL_VERSION_POSIX) {
DEBUG(10, ("Got acl version %d, expected %d\n",
pacl->acl_version, GPFS_ACL_VERSION_POSIX));
errno = EINVAL;
goto done;
}
DEBUG(10, ("len: %d, level: %d, version: %d, nace: %d\n",
pacl->acl_len, pacl->acl_level, pacl->acl_version,
pacl->acl_nace));
result = gpfs2smb_acl(pacl);
if (result == NULL) {
goto done;
}
done:
if (errno != 0) {
SAFE_FREE(result);
}
return result;
}
static SMB_ACL_T gpfsacl_sys_acl_get_file(vfs_handle_struct *handle,
const char *path_p,
SMB_ACL_TYPE_T type)
{
gpfs_aclType_t gpfs_type;
switch(type) {
case SMB_ACL_TYPE_ACCESS:
gpfs_type = GPFS_ACL_TYPE_ACCESS;
break;
case SMB_ACL_TYPE_DEFAULT:
gpfs_type = GPFS_ACL_TYPE_DEFAULT;
break;
default:
DEBUG(0, ("Got invalid type: %d\n", type));
smb_panic("exiting");
}
return gpfsacl_get_posix_acl(path_p, gpfs_type);
}
static SMB_ACL_T gpfsacl_sys_acl_get_fd(vfs_handle_struct *handle,
files_struct *fsp)
{
return gpfsacl_get_posix_acl(fsp->fsp_name->base_name,
GPFS_ACL_TYPE_ACCESS);
}
static struct gpfs_acl *smb2gpfs_acl(const SMB_ACL_T pacl,
SMB_ACL_TYPE_T type)
{
gpfs_aclLen_t len;
struct gpfs_acl *result;
int i;
union gpfs_ace_union
{
gpfs_ace_v1_t ace_v1[1]; /* when GPFS_ACL_VERSION_POSIX */
gpfs_ace_v4_t ace_v4[1]; /* when GPFS_ACL_VERSION_NFS4 */
};
DEBUG(10, ("smb2gpfs_acl: Got ACL with %d entries\n", pacl->count));
len = sizeof(struct gpfs_acl) - sizeof(union gpfs_ace_union) +
(pacl->count)*sizeof(gpfs_ace_v1_t);
2009-04-05 09:31:30 +04:00
result = (struct gpfs_acl *)SMB_MALLOC(len);
if (result == NULL) {
errno = ENOMEM;
return result;
}
result->acl_len = len;
result->acl_level = 0;
result->acl_version = GPFS_ACL_VERSION_POSIX;
result->acl_type = (type == SMB_ACL_TYPE_DEFAULT) ?
GPFS_ACL_TYPE_DEFAULT : GPFS_ACL_TYPE_ACCESS;
result->acl_nace = pacl->count;
for (i=0; i<pacl->count; i++) {
const struct smb_acl_entry *ace = &pacl->acl[i];
struct gpfs_ace_v1 *g_ace = &result->ace_v1[i];
DEBUG(10, ("Converting type %d perm %x\n",
(int)ace->a_type, (int)ace->a_perm));
g_ace->ace_perm = 0;
switch(ace->a_type) {
case SMB_ACL_USER:
g_ace->ace_type = GPFS_ACL_USER;
g_ace->ace_who = (gpfs_uid_t)ace->uid;
break;
case SMB_ACL_USER_OBJ:
g_ace->ace_type = GPFS_ACL_USER_OBJ;
g_ace->ace_perm |= ACL_PERM_CONTROL;
g_ace->ace_who = 0;
break;
case SMB_ACL_GROUP:
g_ace->ace_type = GPFS_ACL_GROUP;
g_ace->ace_who = (gpfs_uid_t)ace->gid;
break;
case SMB_ACL_GROUP_OBJ:
g_ace->ace_type = GPFS_ACL_GROUP_OBJ;
g_ace->ace_who = 0;
break;
case SMB_ACL_MASK:
g_ace->ace_type = GPFS_ACL_MASK;
g_ace->ace_perm = 0x8f;
g_ace->ace_who = 0;
break;
case SMB_ACL_OTHER:
g_ace->ace_type = GPFS_ACL_OTHER;
g_ace->ace_who = 0;
break;
default:
DEBUG(10, ("Got invalid ace_type: %d\n", ace->a_type));
errno = EINVAL;
SAFE_FREE(result);
return NULL;
}
g_ace->ace_perm |= (ace->a_perm & SMB_ACL_READ) ?
ACL_PERM_READ : 0;
g_ace->ace_perm |= (ace->a_perm & SMB_ACL_WRITE) ?
ACL_PERM_WRITE : 0;
g_ace->ace_perm |= (ace->a_perm & SMB_ACL_EXECUTE) ?
ACL_PERM_EXECUTE : 0;
DEBUGADD(10, ("Converted to %d id %d perm %x\n",
g_ace->ace_type, g_ace->ace_who, g_ace->ace_perm));
}
return result;
}
static int gpfsacl_sys_acl_set_file(vfs_handle_struct *handle,
const char *name,
SMB_ACL_TYPE_T type,
SMB_ACL_T theacl)
{
struct gpfs_acl *gpfs_acl;
int result;
gpfs_acl = smb2gpfs_acl(theacl, type);
if (gpfs_acl == NULL) {
return -1;
}
result = smbd_gpfs_putacl((char *)name, GPFS_PUTACL_STRUCT | GPFS_ACL_SAMBA, gpfs_acl);
SAFE_FREE(gpfs_acl);
return result;
}
static int gpfsacl_sys_acl_set_fd(vfs_handle_struct *handle,
files_struct *fsp,
SMB_ACL_T theacl)
{
return gpfsacl_sys_acl_set_file(handle, fsp->fsp_name->base_name,
SMB_ACL_TYPE_ACCESS, theacl);
}
static int gpfsacl_sys_acl_delete_def_file(vfs_handle_struct *handle,
const char *path)
{
errno = ENOTSUP;
return -1;
}
/*
* Assumed: mode bits are shiftable and standard
* Output: the new aceMask field for an smb nfs4 ace
*/
static uint32 gpfsacl_mask_filter(uint32 aceType, uint32 aceMask, uint32 rwx)
{
const uint32 posix_nfs4map[3] = {
SMB_ACE4_EXECUTE, /* execute */
SMB_ACE4_WRITE_DATA | SMB_ACE4_APPEND_DATA, /* write; GPFS specific */
SMB_ACE4_READ_DATA /* read */
};
int i;
uint32_t posix_mask = 0x01;
uint32_t posix_bit;
uint32_t nfs4_bits;
for(i=0; i<3; i++) {
nfs4_bits = posix_nfs4map[i];
posix_bit = rwx & posix_mask;
if (aceType==SMB_ACE4_ACCESS_ALLOWED_ACE_TYPE) {
if (posix_bit)
aceMask |= nfs4_bits;
else
aceMask &= ~nfs4_bits;
} else {
/* add deny bits when suitable */
if (!posix_bit)
aceMask |= nfs4_bits;
else
aceMask &= ~nfs4_bits;
} /* other ace types are unexpected */
posix_mask <<= 1;
}
return aceMask;
}
static int gpfsacl_emu_chmod(const char *path, mode_t mode)
{
SMB4ACL_T *pacl = NULL;
int result;
bool haveAllowEntry[SMB_ACE4_WHO_EVERYONE + 1] = {False, False, False, False};
int i;
files_struct fake_fsp; /* TODO: rationalize parametrization */
SMB4ACE_T *smbace;
NTSTATUS status;
DEBUG(10, ("gpfsacl_emu_chmod invoked for %s mode %o\n", path, mode));
result = gpfs_get_nfs4_acl(path, &pacl);
if (result)
return result;
if (mode & ~(S_IRWXU | S_IRWXG | S_IRWXO)) {
DEBUG(2, ("WARNING: cutting extra mode bits %o on %s\n", mode, path));
}
for (smbace=smb_first_ace4(pacl); smbace!=NULL; smbace = smb_next_ace4(smbace)) {
SMB_ACE4PROP_T *ace = smb_get_ace4(smbace);
uint32_t specid = ace->who.special_id;
if (ace->flags&SMB_ACE4_ID_SPECIAL &&
ace->aceType<=SMB_ACE4_ACCESS_DENIED_ACE_TYPE &&
specid <= SMB_ACE4_WHO_EVERYONE) {
uint32_t newMask;
if (ace->aceType==SMB_ACE4_ACCESS_ALLOWED_ACE_TYPE)
haveAllowEntry[specid] = True;
/* mode >> 6 for @owner, mode >> 3 for @group,
* mode >> 0 for @everyone */
newMask = gpfsacl_mask_filter(ace->aceType, ace->aceMask,
mode >> ((SMB_ACE4_WHO_EVERYONE - specid) * 3));
if (ace->aceMask!=newMask) {
DEBUG(10, ("ace changed for %s (%o -> %o) id=%d\n",
path, ace->aceMask, newMask, specid));
}
ace->aceMask = newMask;
}
}
/* make sure we have at least ALLOW entries
* for all the 3 special ids (@EVERYONE, @OWNER, @GROUP)
* - if necessary
*/
for(i = SMB_ACE4_WHO_OWNER; i<=SMB_ACE4_WHO_EVERYONE; i++) {
SMB_ACE4PROP_T ace;
if (haveAllowEntry[i]==True)
continue;
ZERO_STRUCT(ace);
ace.aceType = SMB_ACE4_ACCESS_ALLOWED_ACE_TYPE;
ace.flags |= SMB_ACE4_ID_SPECIAL;
ace.who.special_id = i;
if (i==SMB_ACE4_WHO_GROUP) /* not sure it's necessary... */
ace.aceFlags |= SMB_ACE4_IDENTIFIER_GROUP;
ace.aceMask = gpfsacl_mask_filter(ace.aceType, ace.aceMask,
mode >> ((SMB_ACE4_WHO_EVERYONE - i) * 3));
/* don't add unnecessary aces */
if (!ace.aceMask)
continue;
/* we add it to the END - as windows expects allow aces */
smb_add_ace4(pacl, &ace);
DEBUG(10, ("Added ALLOW ace for %s, mode=%o, id=%d, aceMask=%x\n",
path, mode, i, ace.aceMask));
}
/* don't add complementary DENY ACEs here */
ZERO_STRUCT(fake_fsp);
status = create_synthetic_smb_fname(talloc_tos(), path, NULL, NULL,
&fake_fsp.fsp_name);
if (!NT_STATUS_IS_OK(status)) {
errno = map_errno_from_nt_status(status);
return -1;
}
/* put the acl */
if (gpfsacl_process_smbacl(&fake_fsp, pacl) == False) {
TALLOC_FREE(fake_fsp.fsp_name);
return -1;
}
TALLOC_FREE(fake_fsp.fsp_name);
return 0; /* ok for [f]chmod */
}
static int vfs_gpfs_chmod(vfs_handle_struct *handle, const char *path, mode_t mode)
{
struct smb_filename *smb_fname_cpath;
int rc;
NTSTATUS status;
status = create_synthetic_smb_fname(
talloc_tos(), path, NULL, NULL, &smb_fname_cpath);
if (SMB_VFS_NEXT_STAT(handle, smb_fname_cpath) != 0) {
return -1;
}
/* avoid chmod() if possible, to preserve acls */
if ((smb_fname_cpath->st.st_ex_mode & ~S_IFMT) == mode) {
return 0;
}
rc = gpfsacl_emu_chmod(path, mode);
if (rc == 1)
return SMB_VFS_NEXT_CHMOD(handle, path, mode);
return rc;
}
static int vfs_gpfs_fchmod(vfs_handle_struct *handle, files_struct *fsp, mode_t mode)
{
SMB_STRUCT_STAT st;
int rc;
if (SMB_VFS_NEXT_FSTAT(handle, fsp, &st) != 0) {
return -1;
}
/* avoid chmod() if possible, to preserve acls */
if ((st.st_ex_mode & ~S_IFMT) == mode) {
return 0;
}
rc = gpfsacl_emu_chmod(fsp->fsp_name->base_name, mode);
if (rc == 1)
return SMB_VFS_NEXT_FCHMOD(handle, fsp, mode);
return rc;
}
static int gpfs_set_xattr(struct vfs_handle_struct *handle, const char *path,
const char *name, const void *value, size_t size, int flags){
const char *attrstr = value;
unsigned int dosmode=0;
struct gpfs_winattr attrs;
int ret = 0;
DEBUG(10, ("gpfs_set_xattr: %s \n",path));
/* Only handle DOS Attributes */
if (strcmp(name,SAMBA_XATTR_DOS_ATTRIB) != 0){
DEBUG(1, ("gpfs_set_xattr:name is %s\n",name));
return SMB_VFS_NEXT_SETXATTR(handle,path,name,value,size,flags);
}
if (size < 2 || attrstr[0] != '0' || attrstr[1] != 'x' ||
sscanf(attrstr, "%x", &dosmode) != 1) {
DEBUG(1,("gpfs_set_xattr: Trying to set badly formed DOSATTRIB on file %s - %s\n", path, attrstr));
return False;
}
attrs.winAttrs = 0;
/*Just map RD_ONLY, ARCHIVE, SYSTEM and HIDDEN. Ignore the others*/
if (dosmode & FILE_ATTRIBUTE_ARCHIVE){
attrs.winAttrs |= GPFS_WINATTR_ARCHIVE;
}
if (dosmode & FILE_ATTRIBUTE_HIDDEN){
attrs.winAttrs |= GPFS_WINATTR_HIDDEN;
}
if (dosmode & FILE_ATTRIBUTE_SYSTEM){
attrs.winAttrs |= GPFS_WINATTR_SYSTEM;
}
if (dosmode & FILE_ATTRIBUTE_READONLY){
attrs.winAttrs |= GPFS_WINATTR_READONLY;
}
ret = set_gpfs_winattrs(CONST_DISCARD(char *, path),
GPFS_WINATTR_SET_ATTRS, &attrs);
if ( ret == -1){
DEBUG(1, ("gpfs_set_xattr:Set GPFS attributes failed %d\n",ret));
return -1;
}
DEBUG(10, ("gpfs_set_xattr:Set attributes: 0x%x\n",attrs.winAttrs));
return 0;
}
static ssize_t gpfs_get_xattr(struct vfs_handle_struct *handle, const char *path,
const char *name, void *value, size_t size){
char *attrstr = value;
unsigned int dosmode = 0;
struct gpfs_winattr attrs;
int ret = 0;
DEBUG(10, ("gpfs_get_xattr: %s \n",path));
/* Only handle DOS Attributes */
if (strcmp(name,SAMBA_XATTR_DOS_ATTRIB) != 0){
DEBUG(1, ("gpfs_get_xattr:name is %s\n",name));
return SMB_VFS_NEXT_GETXATTR(handle,path,name,value,size);
}
ret = get_gpfs_winattrs(CONST_DISCARD(char *, path), &attrs);
if ( ret == -1){
DEBUG(1, ("gpfs_get_xattr: Get GPFS attributes failed: %d\n",ret));
return -1;
}
DEBUG(10, ("gpfs_get_xattr:Got attributes: 0x%x\n",attrs.winAttrs));
/*Just map RD_ONLY, ARCHIVE, SYSTEM and HIDDEN. Ignore the others*/
if (attrs.winAttrs & GPFS_WINATTR_ARCHIVE){
dosmode |= FILE_ATTRIBUTE_ARCHIVE;
}
if (attrs.winAttrs & GPFS_WINATTR_HIDDEN){
dosmode |= FILE_ATTRIBUTE_HIDDEN;
}
if (attrs.winAttrs & GPFS_WINATTR_SYSTEM){
dosmode |= FILE_ATTRIBUTE_SYSTEM;
}
if (attrs.winAttrs & GPFS_WINATTR_READONLY){
dosmode |= FILE_ATTRIBUTE_READONLY;
}
snprintf(attrstr, size, "0x%x", dosmode & SAMBA_ATTRIBUTES_MASK);
DEBUG(10, ("gpfs_get_xattr: returning %s\n",attrstr));
return size;
}
static int vfs_gpfs_stat(struct vfs_handle_struct *handle,
struct smb_filename *smb_fname)
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{
struct gpfs_winattr attrs;
char *fname = NULL;
NTSTATUS status;
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int ret;
ret = SMB_VFS_NEXT_STAT(handle, smb_fname);
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if (ret == -1) {
return -1;
}
status = get_full_smb_filename(talloc_tos(), smb_fname, &fname);
if (!NT_STATUS_IS_OK(status)) {
errno = map_errno_from_nt_status(status);
return -1;
}
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ret = get_gpfs_winattrs(CONST_DISCARD(char *, fname), &attrs);
TALLOC_FREE(fname);
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if (ret == 0) {
smb_fname->st.st_ex_btime.tv_sec = attrs.creationTime.tv_sec;
smb_fname->st.st_ex_btime.tv_nsec = attrs.creationTime.tv_nsec;
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}
return 0;
}
static int vfs_gpfs_fstat(struct vfs_handle_struct *handle,
struct files_struct *fsp, SMB_STRUCT_STAT *sbuf)
{
struct gpfs_winattr attrs;
int ret;
ret = SMB_VFS_NEXT_FSTAT(handle, fsp, sbuf);
if (ret == -1) {
return -1;
}
if ((fsp->fh == NULL) || (fsp->fh->fd == -1)) {
return 0;
}
ret = smbd_fget_gpfs_winattrs(fsp->fh->fd, &attrs);
if (ret == 0) {
sbuf->st_ex_btime.tv_sec = attrs.creationTime.tv_sec;
sbuf->st_ex_btime.tv_nsec = attrs.creationTime.tv_nsec;
}
return 0;
}
static int vfs_gpfs_lstat(struct vfs_handle_struct *handle,
struct smb_filename *smb_fname)
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{
struct gpfs_winattr attrs;
char *path = NULL;
NTSTATUS status;
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int ret;
ret = SMB_VFS_NEXT_LSTAT(handle, smb_fname);
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if (ret == -1) {
return -1;
}
status = get_full_smb_filename(talloc_tos(), smb_fname, &path);
if (!NT_STATUS_IS_OK(status)) {
errno = map_errno_from_nt_status(status);
return -1;
}
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ret = get_gpfs_winattrs(CONST_DISCARD(char *, path), &attrs);
TALLOC_FREE(path);
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if (ret == 0) {
smb_fname->st.st_ex_btime.tv_sec = attrs.creationTime.tv_sec;
smb_fname->st.st_ex_btime.tv_nsec = attrs.creationTime.tv_nsec;
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}
return 0;
}
static int vfs_gpfs_ntimes(struct vfs_handle_struct *handle,
const struct smb_filename *smb_fname,
struct smb_file_time *ft)
{
struct gpfs_winattr attrs;
int ret;
char *path = NULL;
NTSTATUS status;
ret = SMB_VFS_NEXT_NTIMES(handle, smb_fname, ft);
if(ret == -1){
DEBUG(1,("vfs_gpfs_ntimes: SMB_VFS_NEXT_NTIMES failed\n"));
return -1;
}
if(null_timespec(ft->create_time)){
DEBUG(10,("vfs_gpfs_ntimes:Create Time is NULL\n"));
return 0;
}
status = get_full_smb_filename(talloc_tos(), smb_fname, &path);
if (!NT_STATUS_IS_OK(status)) {
errno = map_errno_from_nt_status(status);
return -1;
}
attrs.winAttrs = 0;
attrs.creationTime.tv_sec = ft->create_time.tv_sec;
attrs.creationTime.tv_nsec = ft->create_time.tv_nsec;
ret = set_gpfs_winattrs(CONST_DISCARD(char *, path),
GPFS_WINATTR_SET_CREATION_TIME, &attrs);
if(ret == -1){
DEBUG(1,("vfs_gpfs_ntimes: set GPFS ntimes failed %d\n",ret));
return -1;
}
return 0;
}
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static struct vfs_fn_pointers vfs_gpfs_fns = {
.kernel_flock = vfs_gpfs_kernel_flock,
.linux_setlease = vfs_gpfs_setlease,
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.get_real_filename = vfs_gpfs_get_real_filename,
.fget_nt_acl = gpfsacl_fget_nt_acl,
.get_nt_acl = gpfsacl_get_nt_acl,
.fset_nt_acl = gpfsacl_fset_nt_acl,
.sys_acl_get_file = gpfsacl_sys_acl_get_file,
.sys_acl_get_fd = gpfsacl_sys_acl_get_fd,
.sys_acl_set_file = gpfsacl_sys_acl_set_file,
.sys_acl_set_fd = gpfsacl_sys_acl_set_fd,
.sys_acl_delete_def_file = gpfsacl_sys_acl_delete_def_file,
.chmod = vfs_gpfs_chmod,
.fchmod = vfs_gpfs_fchmod,
.close_fn = vfs_gpfs_close,
.setxattr = gpfs_set_xattr,
.getxattr = gpfs_get_xattr,
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.stat = vfs_gpfs_stat,
.fstat = vfs_gpfs_fstat,
.lstat = vfs_gpfs_lstat,
.ntimes = vfs_gpfs_ntimes,
};
NTSTATUS vfs_gpfs_init(void);
NTSTATUS vfs_gpfs_init(void)
{
init_gpfs();
return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "gpfs",
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&vfs_gpfs_fns);
}