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vfs_gpfs.c
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/*
* Unix SMB/CIFS implementation.
* Samba VFS module for GPFS filesystem
* Copyright (C) Christian Ambach <[email protected]> 2006
* Copyright (C) Christof Schmitt 2015
* Major code contributions by Chetan Shringarpure <[email protected]>
* and Gomati Mohanan <[email protected]>
*
* 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 "smbd/smbd.h"
#include "include/smbprofile.h"
#include "modules/non_posix_acls.h"
#include "libcli/security/security.h"
#include "nfs4_acls.h"
#include "system/filesys.h"
#include "auth.h"
#include "lib/util/tevent_unix.h"
#include "lib/util/gpfswrap.h"
#include <gnutls/gnutls.h>
#include <gnutls/crypto.h>
#include "lib/crypto/gnutls_helpers.h"
#undef DBGC_CLASS
#define DBGC_CLASS DBGC_VFS
#ifndef GPFS_GETACL_NATIVE
#define GPFS_GETACL_NATIVE 0x00000004
#endif
struct gpfs_config_data {
struct smbacl4_vfs_params nfs4_params;
bool sharemodes;
bool leases;
bool hsm;
bool syncio;
bool winattr;
bool ftruncate;
bool getrealfilename;
bool dfreequota;
bool acl;
bool settimes;
bool recalls;
struct {
bool gpfs_fstat_x;
} pathref_ok;
};
struct gpfs_fsp_extension {
bool offline;
};
static inline unsigned int gpfs_acl_flags(gpfs_acl_t *gacl)
{
if (gacl->acl_level == GPFS_ACL_LEVEL_V4FLAGS) {
return gacl->v4Level1.acl_flags;
}
return 0;
}
static inline gpfs_ace_v4_t *gpfs_ace_ptr(gpfs_acl_t *gacl, unsigned int i)
{
if (gacl->acl_level == GPFS_ACL_LEVEL_V4FLAGS) {
return &gacl->v4Level1.ace_v4[i];
}
return &gacl->ace_v4[i];
}
static unsigned int vfs_gpfs_access_mask_to_allow(uint32_t access_mask)
{
unsigned int allow = GPFS_SHARE_NONE;
if (access_mask & (FILE_WRITE_DATA|FILE_APPEND_DATA)) {
allow |= GPFS_SHARE_WRITE;
}
if (access_mask & (FILE_READ_DATA|FILE_EXECUTE)) {
allow |= GPFS_SHARE_READ;
}
return allow;
}
static unsigned int vfs_gpfs_share_access_to_deny(uint32_t share_access)
{
unsigned int deny = GPFS_DENY_NONE;
if (!(share_access & FILE_SHARE_WRITE)) {
deny |= GPFS_DENY_WRITE;
}
if (!(share_access & FILE_SHARE_READ)) {
deny |= GPFS_DENY_READ;
}
/*
* GPFS_DENY_DELETE can only be set together with either
* GPFS_DENY_WRITE or GPFS_DENY_READ.
*/
if ((deny & (GPFS_DENY_WRITE|GPFS_DENY_READ)) &&
!(share_access & FILE_SHARE_DELETE)) {
deny |= GPFS_DENY_DELETE;
}
return deny;
}
static int set_gpfs_sharemode(files_struct *fsp, uint32_t access_mask,
uint32_t share_access)
{
unsigned int allow = GPFS_SHARE_NONE;
unsigned int deny = GPFS_DENY_NONE;
int result;
if (access_mask == 0) {
DBG_DEBUG("Clearing file system share mode.\n");
} else {
allow = vfs_gpfs_access_mask_to_allow(access_mask);
deny = vfs_gpfs_share_access_to_deny(share_access);
}
DBG_DEBUG("access_mask=0x%x, allow=0x%x, share_access=0x%x, "
"deny=0x%x\n", access_mask, allow, share_access, deny);
result = gpfswrap_set_share(fsp_get_io_fd(fsp), allow, deny);
if (result == 0) {
return 0;
}
if (errno == EACCES) {
DBG_NOTICE("GPFS share mode denied for %s/%s.\n",
fsp->conn->connectpath,
fsp->fsp_name->base_name);
} else if (errno == EPERM) {
DBG_ERR("Samba requested GPFS sharemode for %s/%s, but the "
"GPFS file system is not configured accordingly. "
"Configure file system with mmchfs -D nfs4 or "
"set gpfs:sharemodes=no in Samba.\n",
fsp->conn->connectpath,
fsp->fsp_name->base_name);
} else {
DBG_ERR("gpfs_set_share failed: %s\n", strerror(errno));
}
return result;
}
static int vfs_gpfs_filesystem_sharemode(vfs_handle_struct *handle,
files_struct *fsp,
uint32_t share_access,
uint32_t access_mask)
{
struct gpfs_config_data *config;
int ret = 0;
SMB_VFS_HANDLE_GET_DATA(handle, config,
struct gpfs_config_data,
return -1);
if(!config->sharemodes) {
return 0;
}
/*
* A named stream fsp will have the basefile open in the fsp
* fd, so lacking a distinct fd for the stream we have to skip
* set_gpfs_sharemode for stream.
*/
if (is_named_stream(fsp->fsp_name)) {
DBG_NOTICE("Not requesting GPFS sharemode on stream: %s/%s\n",
fsp->conn->connectpath,
fsp_str_dbg(fsp));
return 0;
}
ret = set_gpfs_sharemode(fsp, access_mask, share_access);
return ret;
}
static int vfs_gpfs_close(vfs_handle_struct *handle, files_struct *fsp)
{
struct gpfs_config_data *config;
SMB_VFS_HANDLE_GET_DATA(handle, config,
struct gpfs_config_data,
return -1);
if (config->sharemodes &&
(fsp->fsp_flags.kernel_share_modes_taken))
{
/*
* Always clear GPFS sharemode in case the actual
* close gets deferred due to outstanding POSIX locks
* (see fd_close_posix)
*/
int ret = gpfswrap_set_share(fsp_get_io_fd(fsp), 0, 0);
if (ret != 0) {
DBG_ERR("Clearing GPFS sharemode on close failed for "
" %s/%s: %s\n",
fsp->conn->connectpath,
fsp->fsp_name->base_name,
strerror(errno));
}
}
return SMB_VFS_NEXT_CLOSE(handle, fsp);
}
static int lease_type_to_gpfs(int leasetype)
{
if (leasetype == F_RDLCK) {
return GPFS_LEASE_READ;
}
if (leasetype == F_WRLCK) {
return GPFS_LEASE_WRITE;
}
return GPFS_LEASE_NONE;
}
static int vfs_gpfs_setlease(vfs_handle_struct *handle,
files_struct *fsp,
int leasetype)
{
struct gpfs_config_data *config;
int ret=0;
START_PROFILE(syscall_linux_setlease);
SMB_VFS_HANDLE_GET_DATA(handle, config,
struct gpfs_config_data,
return -1);
ret = linux_set_lease_sighandler(fsp_get_io_fd(fsp));
if (ret == -1) {
goto failure;
}
if (config->leases) {
int gpfs_lease_type = lease_type_to_gpfs(leasetype);
int saved_errno = 0;
/*
* Ensure the lease owner is root to allow
* correct delivery of lease-break signals.
*/
become_root();
ret = gpfswrap_set_lease(fsp_get_io_fd(fsp), gpfs_lease_type);
if (ret < 0) {
saved_errno = errno;
}
unbecome_root();
if (saved_errno != 0) {
errno = saved_errno;
}
}
failure:
END_PROFILE(syscall_linux_setlease);
return ret;
}
static int vfs_gpfs_get_real_filename(struct vfs_handle_struct *handle,
const struct smb_filename *path,
const char *name,
TALLOC_CTX *mem_ctx,
char **found_name)
{
int result;
char *full_path = NULL;
char *to_free = NULL;
char real_pathname[PATH_MAX+1], tmpbuf[PATH_MAX];
size_t full_path_len;
int buflen;
bool mangled;
struct gpfs_config_data *config;
SMB_VFS_HANDLE_GET_DATA(handle, config,
struct gpfs_config_data,
return -1);
if (!config->getrealfilename) {
return SMB_VFS_NEXT_GET_REAL_FILENAME(handle, path, name,
mem_ctx, found_name);
}
mangled = mangle_is_mangled(name, handle->conn->params);
if (mangled) {
return SMB_VFS_NEXT_GET_REAL_FILENAME(handle, path, name,
mem_ctx, found_name);
}
full_path_len = full_path_tos(path->base_name, name,
tmpbuf, sizeof(tmpbuf),
&full_path, &to_free);
if (full_path_len == -1) {
errno = ENOMEM;
return -1;
}
buflen = sizeof(real_pathname) - 1;
result = gpfswrap_get_realfilename_path(full_path, real_pathname,
&buflen);
TALLOC_FREE(to_free);
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->base_name, 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 sd2gpfs_control(uint16_t control, struct gpfs_acl *gacl)
{
unsigned int gpfs_aclflags = 0;
control &= SEC_DESC_DACL_PROTECTED | SEC_DESC_SACL_PROTECTED |
SEC_DESC_DACL_AUTO_INHERITED | SEC_DESC_SACL_AUTO_INHERITED |
SEC_DESC_DACL_DEFAULTED | SEC_DESC_SACL_DEFAULTED |
SEC_DESC_DACL_PRESENT | SEC_DESC_SACL_PRESENT;
gpfs_aclflags = control << 8;
if (!(control & SEC_DESC_DACL_PRESENT))
gpfs_aclflags |= ACL4_FLAG_NULL_DACL;
if (!(control & SEC_DESC_SACL_PRESENT))
gpfs_aclflags |= ACL4_FLAG_NULL_SACL;
gacl->acl_level = GPFS_ACL_LEVEL_V4FLAGS;
gacl->v4Level1.acl_flags = gpfs_aclflags;
}
static uint16_t gpfs2sd_control(unsigned int gpfs_aclflags)
{
uint16_t control = gpfs_aclflags >> 8;
control &= SEC_DESC_DACL_PROTECTED | SEC_DESC_SACL_PROTECTED |
SEC_DESC_DACL_AUTO_INHERITED | SEC_DESC_SACL_AUTO_INHERITED |
SEC_DESC_DACL_DEFAULTED | SEC_DESC_SACL_DEFAULTED |
SEC_DESC_DACL_PRESENT | SEC_DESC_SACL_PRESENT;
control |= SEC_DESC_SELF_RELATIVE;
return control;
}
static void gpfs_dumpacl(int level, struct gpfs_acl *gacl)
{
gpfs_aclCount_t i;
if (gacl==NULL)
{
DEBUG(0, ("gpfs acl is NULL\n"));
return;
}
DEBUG(level, ("len: %d, level: %d, version: %d, nace: %d, "
"control: %x\n",
gacl->acl_len, gacl->acl_level, gacl->acl_version,
gacl->acl_nace, gpfs_acl_flags(gacl)));
for(i=0; i<gacl->acl_nace; i++)
{
struct gpfs_ace_v4 *gace = gpfs_ace_ptr(gacl, 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 int gpfs_getacl_with_capability(const char *fname, int flags, void *buf)
{
int ret, saved_errno;
set_effective_capability(DAC_OVERRIDE_CAPABILITY);
ret = gpfswrap_getacl(fname, flags, buf);
saved_errno = errno;
drop_effective_capability(DAC_OVERRIDE_CAPABILITY);
errno = saved_errno;
return ret;
}
/*
* get the ACL from GPFS, allocated on the specified mem_ctx
* internally retries when initial buffer was too small
*
* caller needs to cast result to either
* raw = yes: struct gpfs_opaque_acl
* raw = no: struct gpfs_acl
*
*/
static void *vfs_gpfs_getacl(TALLOC_CTX *mem_ctx,
const char *fname,
const bool raw,
const gpfs_aclType_t type)
{
void *aclbuf;
size_t size = 512;
int ret, flags;
unsigned int *len;
size_t struct_size;
bool use_capability = false;
again:
aclbuf = talloc_zero_size(mem_ctx, size);
if (aclbuf == NULL) {
errno = ENOMEM;
return NULL;
}
if (raw) {
struct gpfs_opaque_acl *buf = (struct gpfs_opaque_acl *) aclbuf;
buf->acl_type = type;
flags = GPFS_GETACL_NATIVE;
len = (unsigned int *) &(buf->acl_buffer_len);
struct_size = sizeof(struct gpfs_opaque_acl);
} else {
struct gpfs_acl *buf = (struct gpfs_acl *) aclbuf;
buf->acl_type = type;
buf->acl_level = GPFS_ACL_LEVEL_V4FLAGS;
flags = GPFS_GETACL_STRUCT;
len = &(buf->acl_len);
/* reserve space for control flags in gpfs 3.5 and beyond */
struct_size = sizeof(struct gpfs_acl) + sizeof(unsigned int);
}
/* set the length of the buffer as input value */
*len = size;
if (use_capability) {
ret = gpfs_getacl_with_capability(fname, flags, aclbuf);
} else {
ret = gpfswrap_getacl(fname, flags, aclbuf);
if ((ret != 0) && (errno == EACCES)) {
DBG_DEBUG("Retry with DAC capability for %s\n", fname);
use_capability = true;
ret = gpfs_getacl_with_capability(fname, flags, aclbuf);
}
}
if ((ret != 0) && (errno == ENOSPC)) {
/*
* get the size needed to accommodate the complete buffer
*
* the value returned only applies to the ACL blob in the
* struct so make sure to also have headroom for the first
* struct members by adding room for the complete struct
* (might be a few bytes too much then)
*/
size = *len + struct_size;
talloc_free(aclbuf);
DEBUG(10, ("Increasing ACL buffer size to %zu\n", size));
goto again;
}
if (ret != 0) {
DEBUG(5, ("smbd_gpfs_getacl failed with %s\n",
strerror(errno)));
talloc_free(aclbuf);
return NULL;
}
return aclbuf;
}
/* 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(TALLOC_CTX *mem_ctx, const char *fname,
struct SMB4ACL_T **ppacl)
{
gpfs_aclCount_t i;
struct gpfs_acl *gacl = NULL;
DEBUG(10, ("gpfs_get_nfs4_acl invoked for %s\n", fname));
/* Get the ACL */
gacl = (struct gpfs_acl*) vfs_gpfs_getacl(talloc_tos(), fname,
false, 0);
if (gacl == NULL) {
DEBUG(9, ("gpfs_getacl failed for %s with %s\n",
fname, strerror(errno)));
if (errno == ENODATA) {
/*
* GPFS returns ENODATA for snapshot
* directories. Retry with POSIX ACLs check.
*/
return 1;
}
return -1;
}
if (gacl->acl_type != GPFS_ACL_TYPE_NFS4) {
DEBUG(10, ("Got non-nfsv4 acl\n"));
/* Retry with POSIX ACLs check */
talloc_free(gacl);
return 1;
}
*ppacl = smb_create_smb4acl(mem_ctx);
if (gacl->acl_level == GPFS_ACL_LEVEL_V4FLAGS) {
uint16_t control = gpfs2sd_control(gpfs_acl_flags(gacl));
smbacl4_set_controlflags(*ppacl, control);
}
DEBUG(10, ("len: %d, level: %d, version: %d, nace: %d, control: %x\n",
gacl->acl_len, gacl->acl_level, gacl->acl_version,
gacl->acl_nace, gpfs_acl_flags(gacl)));
for (i=0; i<gacl->acl_nace; i++) {
struct gpfs_ace_v4 *gace = gpfs_ace_ptr(gacl, i);
SMB_ACE4PROP_T smbace = { 0 };
DEBUG(10, ("type: %d, iflags: %x, flags: %x, mask: %x, "
"who: %d\n", gace->aceType, gace->aceIFlags,
gace->aceFlags, gace->aceMask, gace->aceWho));
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 redundant deny entries */
if (i > 0 && gace->aceType == SMB_ACE4_ACCESS_DENIED_ACE_TYPE) {
struct gpfs_ace_v4 *prev = gpfs_ace_ptr(gacl, 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) {
/* it's redundant - skip it */
continue;
}
}
smbace.aceType = gace->aceType;
smbace.aceFlags = gace->aceFlags;
smbace.aceMask = gace->aceMask;
smb_add_ace4(*ppacl, &smbace);
}
talloc_free(gacl);
return 0;
}
static NTSTATUS gpfsacl_fget_nt_acl(vfs_handle_struct *handle,
files_struct *fsp, uint32_t security_info,
TALLOC_CTX *mem_ctx,
struct security_descriptor **ppdesc)
{
struct SMB4ACL_T *pacl = NULL;
int result;
struct gpfs_config_data *config;
TALLOC_CTX *frame = talloc_stackframe();
NTSTATUS status;
*ppdesc = NULL;
SMB_VFS_HANDLE_GET_DATA(handle, config,
struct gpfs_config_data,
return NT_STATUS_INTERNAL_ERROR);
if (!config->acl) {
status = SMB_VFS_NEXT_FGET_NT_ACL(handle, fsp, security_info,
mem_ctx, ppdesc);
TALLOC_FREE(frame);
return status;
}
result = gpfs_get_nfs4_acl(frame, fsp->fsp_name->base_name, &pacl);
if (result == 0) {
status = smb_fget_nt_acl_nfs4(fsp, &config->nfs4_params,
security_info,
mem_ctx, ppdesc, pacl);
TALLOC_FREE(frame);
return status;
}
if (result > 0) {
DEBUG(10, ("retrying with posix acl...\n"));
status = posix_fget_nt_acl(fsp, security_info,
mem_ctx, ppdesc);
TALLOC_FREE(frame);
return status;
}
TALLOC_FREE(frame);
/* GPFS ACL was not read, something wrong happened, error code is set in errno */
return map_nt_error_from_unix(errno);
}
static bool vfs_gpfs_nfs4_ace_to_gpfs_ace(SMB_ACE4PROP_T *nfs4_ace,
struct gpfs_ace_v4 *gace,
uid_t owner_uid)
{
gace->aceType = nfs4_ace->aceType;
gace->aceFlags = nfs4_ace->aceFlags;
gace->aceMask = nfs4_ace->aceMask;
if (nfs4_ace->flags & SMB_ACE4_ID_SPECIAL) {
switch(nfs4_ace->who.special_id) {
case SMB_ACE4_WHO_EVERYONE:
gace->aceIFlags = ACE4_IFLAG_SPECIAL_ID;
gace->aceWho = ACE4_SPECIAL_EVERYONE;
break;
case SMB_ACE4_WHO_OWNER:
/*
* With GPFS it is not possible to deny ACL or
* attribute access to the owner. Setting an
* ACL with such an entry is not possible.
* Denying ACL or attribute access for the
* owner through a named ACL entry can be
* stored in an ACL, it is just not effective.
*
* Map this case to a named entry to allow at
* least setting this ACL, which will be
* enforced by the smbd permission check. Do
* not do this for an inheriting OWNER entry,
* as this represents a CREATOR OWNER ACE. The
* remaining limitation is that CREATOR OWNER
* cannot deny ACL or attribute access.
*/
if (!nfs_ace_is_inherit(nfs4_ace) &&
nfs4_ace->aceType ==
SMB_ACE4_ACCESS_DENIED_ACE_TYPE &&
nfs4_ace->aceMask & (SMB_ACE4_READ_ATTRIBUTES|
SMB_ACE4_WRITE_ATTRIBUTES|
SMB_ACE4_READ_ACL|
SMB_ACE4_WRITE_ACL)) {
gace->aceIFlags = 0;
gace->aceWho = owner_uid;
} else {
gace->aceIFlags = ACE4_IFLAG_SPECIAL_ID;
gace->aceWho = ACE4_SPECIAL_OWNER;
}
break;
case SMB_ACE4_WHO_GROUP:
gace->aceIFlags = ACE4_IFLAG_SPECIAL_ID;
gace->aceWho = ACE4_SPECIAL_GROUP;
break;
default:
DBG_WARNING("Unsupported special_id %d\n",
nfs4_ace->who.special_id);
return false;
}
return true;
}
gace->aceIFlags = 0;
gace->aceWho = (nfs4_ace->aceFlags & SMB_ACE4_IDENTIFIER_GROUP) ?
nfs4_ace->who.gid : nfs4_ace->who.uid;
return true;
}
static struct gpfs_acl *vfs_gpfs_smbacl2gpfsacl(TALLOC_CTX *mem_ctx,
files_struct *fsp,
struct SMB4ACL_T *smbacl,
bool controlflags)
{
struct gpfs_acl *gacl;
gpfs_aclLen_t gacl_len;
struct SMB4ACE_T *smbace;
gacl_len = offsetof(gpfs_acl_t, ace_v4) + sizeof(unsigned int)
+ smb_get_naces(smbacl) * sizeof(gpfs_ace_v4_t);
gacl = (struct gpfs_acl *)TALLOC_SIZE(mem_ctx, gacl_len);
if (gacl == NULL) {
DEBUG(0, ("talloc failed\n"));
errno = ENOMEM;
return NULL;
}
gacl->acl_level = GPFS_ACL_LEVEL_BASE;
gacl->acl_version = GPFS_ACL_VERSION_NFS4;
gacl->acl_type = GPFS_ACL_TYPE_NFS4;
gacl->acl_nace = 0; /* change later... */
if (controlflags) {
gacl->acl_level = GPFS_ACL_LEVEL_V4FLAGS;
sd2gpfs_control(smbacl4_get_controlflags(smbacl), gacl);
}
for (smbace=smb_first_ace4(smbacl); smbace!=NULL; smbace = smb_next_ace4(smbace)) {
struct gpfs_ace_v4 *gace = gpfs_ace_ptr(gacl, gacl->acl_nace);
SMB_ACE4PROP_T *aceprop = smb_get_ace4(smbace);
bool add_ace;
add_ace = vfs_gpfs_nfs4_ace_to_gpfs_ace(aceprop, gace,
fsp->fsp_name->st.st_ex_uid);
if (!add_ace) {
continue;
}
gacl->acl_nace++;
}
gacl->acl_len = (char *)gpfs_ace_ptr(gacl, gacl->acl_nace)
- (char *)gacl;
return gacl;
}
static bool gpfsacl_process_smbacl(vfs_handle_struct *handle,
files_struct *fsp,
struct SMB4ACL_T *smbacl)
{
int ret;
struct gpfs_acl *gacl;
TALLOC_CTX *mem_ctx = talloc_tos();
gacl = vfs_gpfs_smbacl2gpfsacl(mem_ctx, fsp, smbacl, true);
if (gacl == NULL) { /* out of memory */
return False;
}
ret = gpfswrap_putacl(fsp->fsp_name->base_name,
GPFS_PUTACL_STRUCT | GPFS_ACL_SAMBA, gacl);
if ((ret != 0) && (errno == EINVAL)) {
DEBUG(10, ("Retry without nfs41 control flags\n"));
talloc_free(gacl);
gacl = vfs_gpfs_smbacl2gpfsacl(mem_ctx, fsp, smbacl, false);
if (gacl == NULL) { /* out of memory */
return False;
}
ret = gpfswrap_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(vfs_handle_struct *handle, files_struct *fsp, uint32_t security_info_sent, const struct security_descriptor *psd)
{
struct gpfs_acl *acl;
NTSTATUS result = NT_STATUS_ACCESS_DENIED;
acl = (struct gpfs_acl*) vfs_gpfs_getacl(talloc_tos(),
fsp->fsp_name->base_name,
false, 0);
if (acl == NULL) {
return map_nt_error_from_unix(errno);
}
if (acl->acl_version == GPFS_ACL_VERSION_NFS4) {
struct gpfs_config_data *config;
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"));
talloc_free(acl);
return NT_STATUS_NOT_SUPPORTED;
}
SMB_VFS_HANDLE_GET_DATA(handle, config,
struct gpfs_config_data,
return NT_STATUS_INTERNAL_ERROR);
result = smb_set_nt_acl_nfs4(handle,
fsp, &config->nfs4_params, security_info_sent, psd,
gpfsacl_process_smbacl);
} else { /* assume POSIX ACL - by default... */
result = set_nt_acl(fsp, security_info_sent, psd);
}
talloc_free(acl);
return result;
}
static NTSTATUS gpfsacl_fset_nt_acl(vfs_handle_struct *handle, files_struct *fsp, uint32_t security_info_sent, const struct security_descriptor *psd)
{
struct gpfs_config_data *config;
SMB_VFS_HANDLE_GET_DATA(handle, config,
struct gpfs_config_data,
return NT_STATUS_INTERNAL_ERROR);
if (!config->acl) {
return SMB_VFS_NEXT_FSET_NT_ACL(handle, fsp, security_info_sent, psd);
}
return gpfsacl_set_nt_acl_internal(handle, fsp, security_info_sent, psd);
}
static SMB_ACL_T gpfs2smb_acl(const struct gpfs_acl *pacl, TALLOC_CTX *mem_ctx)
{
SMB_ACL_T result;
gpfs_aclCount_t i;
result = sys_acl_init(mem_ctx);
if (result == NULL) {
errno = ENOMEM;
return NULL;
}
result->count = pacl->acl_nace;
result->acl = talloc_realloc(result, result->acl, struct smb_acl_entry,
result->count);
if (result->acl == NULL) {
TALLOC_FREE(result);
errno = ENOMEM;
return NULL;
}
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->info.user.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->info.group.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));
TALLOC_FREE(result);
errno = EINVAL;
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,
TALLOC_CTX *mem_ctx)
{
struct gpfs_acl *pacl;
SMB_ACL_T result = NULL;
pacl = vfs_gpfs_getacl(talloc_tos(), path, false, type);
if (pacl == NULL) {
DEBUG(10, ("vfs_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, mem_ctx);
if (result != NULL) {
errno = 0;
}
done:
if (pacl != NULL) {
talloc_free(pacl);
}
if (errno != 0) {
TALLOC_FREE(result);
}
return result;
}
static SMB_ACL_T gpfsacl_sys_acl_get_fd(vfs_handle_struct *handle,
files_struct *fsp,
SMB_ACL_TYPE_T type,
TALLOC_CTX *mem_ctx)
{
gpfs_aclType_t gpfs_type;
struct gpfs_config_data *config;
SMB_VFS_HANDLE_GET_DATA(handle, config,
struct gpfs_config_data,
return NULL);
if (!config->acl) {
return SMB_VFS_NEXT_SYS_ACL_GET_FD(handle, fsp, type, mem_ctx);
}