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samba-mirror/source3/modules/vfs_glusterfs.c
Anoop C S 5f95744924 vfs_glusterfs: Enable caching of selinux xattr by default
Signed-off-by: Anoop C S <anoopcs@redhat.com>
Reviewed-by: Guenther Deschner <gd@samba.org>

Autobuild-User(master): Anoop C S <anoopcs@samba.org>
Autobuild-Date(master): Wed Jun 17 08:23:33 UTC 2020 on sn-devel-184
2020-06-17 08:23:33 +00:00

2173 lines
51 KiB
C

/*
Unix SMB/CIFS implementation.
Wrap GlusterFS GFAPI calls in vfs functions.
Copyright (c) 2013 Anand Avati <avati@redhat.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/>.
*/
/**
* @file vfs_glusterfs.c
* @author Anand Avati <avati@redhat.com>
* @date May 2013
* @brief Samba VFS module for glusterfs
*
* @todo
* - sendfile/recvfile support
*
* A Samba VFS module for GlusterFS, based on Gluster's libgfapi.
* This is a "bottom" vfs module (not something to be stacked on top of
* another module), and translates (most) calls to the closest actions
* available in libgfapi.
*
*/
#include "includes.h"
#include "smbd/smbd.h"
#include <stdio.h>
#include <glusterfs/api/glfs.h>
#include "lib/util/dlinklist.h"
#include "lib/util/tevent_unix.h"
#include "smbd/globals.h"
#include "lib/util/sys_rw.h"
#include "smbprofile.h"
#include "modules/posixacl_xattr.h"
#include "lib/pthreadpool/pthreadpool_tevent.h"
#define DEFAULT_VOLFILE_SERVER "localhost"
#define GLUSTER_NAME_MAX 255
/**
* Helper to convert struct stat to struct stat_ex.
*/
static void smb_stat_ex_from_stat(struct stat_ex *dst, const struct stat *src)
{
ZERO_STRUCTP(dst);
dst->st_ex_dev = src->st_dev;
dst->st_ex_ino = src->st_ino;
dst->st_ex_mode = src->st_mode;
dst->st_ex_nlink = src->st_nlink;
dst->st_ex_uid = src->st_uid;
dst->st_ex_gid = src->st_gid;
dst->st_ex_rdev = src->st_rdev;
dst->st_ex_size = src->st_size;
dst->st_ex_atime.tv_sec = src->st_atime;
dst->st_ex_mtime.tv_sec = src->st_mtime;
dst->st_ex_ctime.tv_sec = src->st_ctime;
dst->st_ex_btime.tv_sec = src->st_mtime;
dst->st_ex_blksize = src->st_blksize;
dst->st_ex_blocks = src->st_blocks;
dst->st_ex_file_id = dst->st_ex_ino;
dst->st_ex_iflags |= ST_EX_IFLAG_CALCULATED_FILE_ID;
#ifdef STAT_HAVE_NSEC
dst->st_ex_atime.tv_nsec = src->st_atime_nsec;
dst->st_ex_mtime.tv_nsec = src->st_mtime_nsec;
dst->st_ex_ctime.tv_nsec = src->st_ctime_nsec;
dst->st_ex_btime.tv_nsec = src->st_mtime_nsec;
#endif
dst->st_ex_itime = dst->st_ex_btime;
dst->st_ex_iflags |= ST_EX_IFLAG_CALCULATED_ITIME;
}
/* pre-opened glfs_t */
static struct glfs_preopened {
char *volume;
char *connectpath;
glfs_t *fs;
int ref;
struct glfs_preopened *next, *prev;
} *glfs_preopened;
static int glfs_set_preopened(const char *volume, const char *connectpath, glfs_t *fs)
{
struct glfs_preopened *entry = NULL;
entry = talloc_zero(NULL, struct glfs_preopened);
if (!entry) {
errno = ENOMEM;
return -1;
}
entry->volume = talloc_strdup(entry, volume);
if (!entry->volume) {
talloc_free(entry);
errno = ENOMEM;
return -1;
}
entry->connectpath = talloc_strdup(entry, connectpath);
if (entry->connectpath == NULL) {
talloc_free(entry);
errno = ENOMEM;
return -1;
}
entry->fs = fs;
entry->ref = 1;
DLIST_ADD(glfs_preopened, entry);
return 0;
}
static glfs_t *glfs_find_preopened(const char *volume, const char *connectpath)
{
struct glfs_preopened *entry = NULL;
for (entry = glfs_preopened; entry; entry = entry->next) {
if (strcmp(entry->volume, volume) == 0 &&
strcmp(entry->connectpath, connectpath) == 0)
{
entry->ref++;
return entry->fs;
}
}
return NULL;
}
static void glfs_clear_preopened(glfs_t *fs)
{
struct glfs_preopened *entry = NULL;
for (entry = glfs_preopened; entry; entry = entry->next) {
if (entry->fs == fs) {
if (--entry->ref)
return;
DLIST_REMOVE(glfs_preopened, entry);
glfs_fini(entry->fs);
talloc_free(entry);
}
}
}
static int vfs_gluster_set_volfile_servers(glfs_t *fs,
const char *volfile_servers)
{
char *server = NULL;
size_t server_count = 0;
size_t server_success = 0;
int ret = -1;
TALLOC_CTX *frame = talloc_stackframe();
DBG_INFO("servers list %s\n", volfile_servers);
while (next_token_talloc(frame, &volfile_servers, &server, " \t")) {
char *transport = NULL;
char *host = NULL;
int port = 0;
server_count++;
DBG_INFO("server %zu %s\n", server_count, server);
/* Determine the transport type */
if (strncmp(server, "unix+", 5) == 0) {
port = 0;
transport = talloc_strdup(frame, "unix");
if (!transport) {
errno = ENOMEM;
goto out;
}
host = talloc_strdup(frame, server + 5);
if (!host) {
errno = ENOMEM;
goto out;
}
} else {
char *p = NULL;
char *port_index = NULL;
if (strncmp(server, "tcp+", 4) == 0) {
server += 4;
}
/* IPv6 is enclosed in []
* ':' before ']' is part of IPv6
* ':' after ']' indicates port
*/
p = server;
if (server[0] == '[') {
server++;
p = index(server, ']');
if (p == NULL) {
/* Malformed IPv6 */
continue;
}
p[0] = '\0';
p++;
}
port_index = index(p, ':');
if (port_index == NULL) {
port = 0;
} else {
port = atoi(port_index + 1);
port_index[0] = '\0';
}
transport = talloc_strdup(frame, "tcp");
if (!transport) {
errno = ENOMEM;
goto out;
}
host = talloc_strdup(frame, server);
if (!host) {
errno = ENOMEM;
goto out;
}
}
DBG_INFO("Calling set volfile server with params "
"transport=%s, host=%s, port=%d\n", transport,
host, port);
ret = glfs_set_volfile_server(fs, transport, host, port);
if (ret < 0) {
DBG_WARNING("Failed to set volfile_server "
"transport=%s, host=%s, port=%d (%s)\n",
transport, host, port, strerror(errno));
} else {
server_success++;
}
}
out:
if (server_count == 0) {
ret = -1;
} else if (server_success < server_count) {
DBG_WARNING("Failed to set %zu out of %zu servers parsed\n",
server_count - server_success, server_count);
ret = 0;
}
TALLOC_FREE(frame);
return ret;
}
/* Disk Operations */
static int vfs_gluster_connect(struct vfs_handle_struct *handle,
const char *service,
const char *user)
{
const struct loadparm_substitution *lp_sub =
loadparm_s3_global_substitution();
const char *volfile_servers;
const char *volume;
char *logfile;
int loglevel;
glfs_t *fs = NULL;
TALLOC_CTX *tmp_ctx;
int ret = 0;
tmp_ctx = talloc_new(NULL);
if (tmp_ctx == NULL) {
ret = -1;
goto done;
}
logfile = lp_parm_substituted_string(tmp_ctx,
lp_sub,
SNUM(handle->conn),
"glusterfs",
"logfile",
NULL);
loglevel = lp_parm_int(SNUM(handle->conn), "glusterfs", "loglevel", -1);
volfile_servers = lp_parm_substituted_string(tmp_ctx,
lp_sub,
SNUM(handle->conn),
"glusterfs",
"volfile_server",
NULL);
if (volfile_servers == NULL) {
volfile_servers = DEFAULT_VOLFILE_SERVER;
}
volume = lp_parm_const_string(SNUM(handle->conn), "glusterfs", "volume",
NULL);
if (volume == NULL) {
volume = service;
}
fs = glfs_find_preopened(volume, handle->conn->connectpath);
if (fs) {
goto done;
}
fs = glfs_new(volume);
if (fs == NULL) {
ret = -1;
goto done;
}
ret = vfs_gluster_set_volfile_servers(fs, volfile_servers);
if (ret < 0) {
DBG_ERR("Failed to set volfile_servers from list %s\n",
volfile_servers);
goto done;
}
ret = glfs_set_xlator_option(fs, "*-md-cache", "cache-posix-acl",
"true");
if (ret < 0) {
DEBUG(0, ("%s: Failed to set xlator options\n", volume));
goto done;
}
ret = glfs_set_xlator_option(fs, "*-md-cache", "cache-selinux",
"true");
if (ret < 0) {
DEBUG(0, ("%s: Failed to set xlator options\n", volume));
goto done;
}
ret = glfs_set_xlator_option(fs, "*-snapview-client",
"snapdir-entry-path",
handle->conn->connectpath);
if (ret < 0) {
DEBUG(0, ("%s: Failed to set xlator option:"
" snapdir-entry-path\n", volume));
goto done;
}
ret = glfs_set_logging(fs, logfile, loglevel);
if (ret < 0) {
DEBUG(0, ("%s: Failed to set logfile %s loglevel %d\n",
volume, logfile, loglevel));
goto done;
}
ret = glfs_init(fs);
if (ret < 0) {
DEBUG(0, ("%s: Failed to initialize volume (%s)\n",
volume, strerror(errno)));
goto done;
}
ret = glfs_set_preopened(volume, handle->conn->connectpath, fs);
if (ret < 0) {
DEBUG(0, ("%s: Failed to register volume (%s)\n",
volume, strerror(errno)));
goto done;
}
/*
* The shadow_copy2 module will fail to export subdirectories
* of a gluster volume unless we specify the mount point,
* because the detection fails if the file system is not
* locally mounted:
* https://bugzilla.samba.org/show_bug.cgi?id=13091
*/
lp_do_parameter(SNUM(handle->conn), "shadow:mountpoint", "/");
/*
* Unless we have an async implementation of getxattrat turn this off.
*/
lp_do_parameter(SNUM(handle->conn), "smbd async dosmode", "false");
done:
if (ret < 0) {
if (fs)
glfs_fini(fs);
} else {
DBG_ERR("%s: Initialized volume from servers %s\n",
volume, volfile_servers);
handle->data = fs;
}
talloc_free(tmp_ctx);
return ret;
}
static void vfs_gluster_disconnect(struct vfs_handle_struct *handle)
{
glfs_t *fs = NULL;
fs = handle->data;
glfs_clear_preopened(fs);
}
static uint64_t vfs_gluster_disk_free(struct vfs_handle_struct *handle,
const struct smb_filename *smb_fname,
uint64_t *bsize_p,
uint64_t *dfree_p,
uint64_t *dsize_p)
{
struct statvfs statvfs = { 0, };
int ret;
ret = glfs_statvfs(handle->data, smb_fname->base_name, &statvfs);
if (ret < 0) {
return -1;
}
if (bsize_p != NULL) {
*bsize_p = (uint64_t)statvfs.f_bsize; /* Block size */
}
if (dfree_p != NULL) {
*dfree_p = (uint64_t)statvfs.f_bavail; /* Available Block units */
}
if (dsize_p != NULL) {
*dsize_p = (uint64_t)statvfs.f_blocks; /* Total Block units */
}
return (uint64_t)statvfs.f_bavail;
}
static int vfs_gluster_get_quota(struct vfs_handle_struct *handle,
const struct smb_filename *smb_fname,
enum SMB_QUOTA_TYPE qtype,
unid_t id,
SMB_DISK_QUOTA *qt)
{
errno = ENOSYS;
return -1;
}
static int
vfs_gluster_set_quota(struct vfs_handle_struct *handle,
enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *qt)
{
errno = ENOSYS;
return -1;
}
static int vfs_gluster_statvfs(struct vfs_handle_struct *handle,
const struct smb_filename *smb_fname,
struct vfs_statvfs_struct *vfs_statvfs)
{
struct statvfs statvfs = { 0, };
int ret;
ret = glfs_statvfs(handle->data, smb_fname->base_name, &statvfs);
if (ret < 0) {
DEBUG(0, ("glfs_statvfs(%s) failed: %s\n",
smb_fname->base_name, strerror(errno)));
return -1;
}
ZERO_STRUCTP(vfs_statvfs);
vfs_statvfs->OptimalTransferSize = statvfs.f_frsize;
vfs_statvfs->BlockSize = statvfs.f_bsize;
vfs_statvfs->TotalBlocks = statvfs.f_blocks;
vfs_statvfs->BlocksAvail = statvfs.f_bfree;
vfs_statvfs->UserBlocksAvail = statvfs.f_bavail;
vfs_statvfs->TotalFileNodes = statvfs.f_files;
vfs_statvfs->FreeFileNodes = statvfs.f_ffree;
vfs_statvfs->FsIdentifier = statvfs.f_fsid;
vfs_statvfs->FsCapabilities =
FILE_CASE_SENSITIVE_SEARCH | FILE_CASE_PRESERVED_NAMES;
return ret;
}
static uint32_t vfs_gluster_fs_capabilities(struct vfs_handle_struct *handle,
enum timestamp_set_resolution *p_ts_res)
{
uint32_t caps = FILE_CASE_SENSITIVE_SEARCH | FILE_CASE_PRESERVED_NAMES;
#ifdef HAVE_GFAPI_VER_6
caps |= FILE_SUPPORTS_SPARSE_FILES;
#endif
#ifdef STAT_HAVE_NSEC
*p_ts_res = TIMESTAMP_SET_NT_OR_BETTER;
#endif
return caps;
}
static glfs_fd_t *vfs_gluster_fetch_glfd(struct vfs_handle_struct *handle,
files_struct *fsp)
{
glfs_fd_t **glfd = (glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp);
if (glfd == NULL) {
DBG_INFO("Failed to fetch fsp extension\n");
return NULL;
}
if (*glfd == NULL) {
DBG_INFO("Empty glfs_fd_t pointer\n");
return NULL;
}
return *glfd;
}
static DIR *vfs_gluster_fdopendir(struct vfs_handle_struct *handle,
files_struct *fsp, const char *mask,
uint32_t attributes)
{
glfs_fd_t *glfd = vfs_gluster_fetch_glfd(handle, fsp);
if (glfd == NULL) {
DBG_ERR("Failed to fetch gluster fd\n");
return NULL;
}
return (DIR *)glfd;
}
static int vfs_gluster_closedir(struct vfs_handle_struct *handle, DIR *dirp)
{
int ret;
START_PROFILE(syscall_closedir);
ret = glfs_closedir((void *)dirp);
END_PROFILE(syscall_closedir);
return ret;
}
static struct dirent *vfs_gluster_readdir(struct vfs_handle_struct *handle,
DIR *dirp, SMB_STRUCT_STAT *sbuf)
{
static char direntbuf[512];
int ret;
struct stat stat;
struct dirent *dirent = 0;
START_PROFILE(syscall_readdir);
if (sbuf != NULL) {
ret = glfs_readdirplus_r((void *)dirp, &stat, (void *)direntbuf,
&dirent);
} else {
ret = glfs_readdir_r((void *)dirp, (void *)direntbuf, &dirent);
}
if ((ret < 0) || (dirent == NULL)) {
END_PROFILE(syscall_readdir);
return NULL;
}
if (sbuf != NULL) {
SET_STAT_INVALID(*sbuf);
if (!S_ISLNK(stat.st_mode)) {
smb_stat_ex_from_stat(sbuf, &stat);
}
}
END_PROFILE(syscall_readdir);
return dirent;
}
static long vfs_gluster_telldir(struct vfs_handle_struct *handle, DIR *dirp)
{
long ret;
START_PROFILE(syscall_telldir);
ret = glfs_telldir((void *)dirp);
END_PROFILE(syscall_telldir);
return ret;
}
static void vfs_gluster_seekdir(struct vfs_handle_struct *handle, DIR *dirp,
long offset)
{
START_PROFILE(syscall_seekdir);
glfs_seekdir((void *)dirp, offset);
END_PROFILE(syscall_seekdir);
}
static void vfs_gluster_rewinddir(struct vfs_handle_struct *handle, DIR *dirp)
{
START_PROFILE(syscall_rewinddir);
glfs_seekdir((void *)dirp, 0);
END_PROFILE(syscall_rewinddir);
}
static int vfs_gluster_mkdirat(struct vfs_handle_struct *handle,
struct files_struct *dirfsp,
const struct smb_filename *smb_fname,
mode_t mode)
{
int ret;
START_PROFILE(syscall_mkdirat);
SMB_ASSERT(dirfsp == dirfsp->conn->cwd_fsp);
ret = glfs_mkdir(handle->data, smb_fname->base_name, mode);
END_PROFILE(syscall_mkdirat);
return ret;
}
static int vfs_gluster_openat(struct vfs_handle_struct *handle,
const struct files_struct *dirfsp,
const struct smb_filename *smb_fname,
files_struct *fsp,
int flags,
mode_t mode)
{
glfs_fd_t *glfd;
glfs_fd_t **p_tmp;
START_PROFILE(syscall_openat);
/*
* Looks like glfs API doesn't have openat().
*/
SMB_ASSERT(dirfsp->fh->fd == AT_FDCWD);
p_tmp = VFS_ADD_FSP_EXTENSION(handle, fsp, glfs_fd_t *, NULL);
if (p_tmp == NULL) {
END_PROFILE(syscall_openat);
errno = ENOMEM;
return -1;
}
if (flags & O_DIRECTORY) {
glfd = glfs_opendir(handle->data, smb_fname->base_name);
} else if (flags & O_CREAT) {
glfd = glfs_creat(handle->data, smb_fname->base_name, flags,
mode);
} else {
glfd = glfs_open(handle->data, smb_fname->base_name, flags);
}
if (glfd == NULL) {
END_PROFILE(syscall_openat);
/* no extension destroy_fn, so no need to save errno */
VFS_REMOVE_FSP_EXTENSION(handle, fsp);
return -1;
}
*p_tmp = glfd;
END_PROFILE(syscall_openat);
/* An arbitrary value for error reporting, so you know its us. */
return 13371337;
}
static int vfs_gluster_close(struct vfs_handle_struct *handle,
files_struct *fsp)
{
int ret;
glfs_fd_t *glfd = NULL;
START_PROFILE(syscall_close);
glfd = vfs_gluster_fetch_glfd(handle, fsp);
if (glfd == NULL) {
END_PROFILE(syscall_close);
DBG_ERR("Failed to fetch gluster fd\n");
return -1;
}
VFS_REMOVE_FSP_EXTENSION(handle, fsp);
ret = glfs_close(glfd);
END_PROFILE(syscall_close);
return ret;
}
static ssize_t vfs_gluster_pread(struct vfs_handle_struct *handle,
files_struct *fsp, void *data, size_t n,
off_t offset)
{
ssize_t ret;
glfs_fd_t *glfd = NULL;
START_PROFILE_BYTES(syscall_pread, n);
glfd = vfs_gluster_fetch_glfd(handle, fsp);
if (glfd == NULL) {
END_PROFILE_BYTES(syscall_pread);
DBG_ERR("Failed to fetch gluster fd\n");
return -1;
}
#ifdef HAVE_GFAPI_VER_7_6
ret = glfs_pread(glfd, data, n, offset, 0, NULL);
#else
ret = glfs_pread(glfd, data, n, offset, 0);
#endif
END_PROFILE_BYTES(syscall_pread);
return ret;
}
struct vfs_gluster_pread_state {
ssize_t ret;
glfs_fd_t *fd;
void *buf;
size_t count;
off_t offset;
struct vfs_aio_state vfs_aio_state;
SMBPROFILE_BYTES_ASYNC_STATE(profile_bytes);
};
static void vfs_gluster_pread_do(void *private_data);
static void vfs_gluster_pread_done(struct tevent_req *subreq);
static int vfs_gluster_pread_state_destructor(struct vfs_gluster_pread_state *state);
static struct tevent_req *vfs_gluster_pread_send(struct vfs_handle_struct
*handle, TALLOC_CTX *mem_ctx,
struct tevent_context *ev,
files_struct *fsp,
void *data, size_t n,
off_t offset)
{
struct vfs_gluster_pread_state *state;
struct tevent_req *req, *subreq;
glfs_fd_t *glfd = vfs_gluster_fetch_glfd(handle, fsp);
if (glfd == NULL) {
DBG_ERR("Failed to fetch gluster fd\n");
return NULL;
}
req = tevent_req_create(mem_ctx, &state, struct vfs_gluster_pread_state);
if (req == NULL) {
return NULL;
}
state->ret = -1;
state->fd = glfd;
state->buf = data;
state->count = n;
state->offset = offset;
SMBPROFILE_BYTES_ASYNC_START(syscall_asys_pread, profile_p,
state->profile_bytes, n);
SMBPROFILE_BYTES_ASYNC_SET_IDLE(state->profile_bytes);
subreq = pthreadpool_tevent_job_send(
state, ev, handle->conn->sconn->pool,
vfs_gluster_pread_do, state);
if (tevent_req_nomem(subreq, req)) {
return tevent_req_post(req, ev);
}
tevent_req_set_callback(subreq, vfs_gluster_pread_done, req);
talloc_set_destructor(state, vfs_gluster_pread_state_destructor);
return req;
}
static void vfs_gluster_pread_do(void *private_data)
{
struct vfs_gluster_pread_state *state = talloc_get_type_abort(
private_data, struct vfs_gluster_pread_state);
struct timespec start_time;
struct timespec end_time;
SMBPROFILE_BYTES_ASYNC_SET_BUSY(state->profile_bytes);
PROFILE_TIMESTAMP(&start_time);
do {
#ifdef HAVE_GFAPI_VER_7_6
state->ret = glfs_pread(state->fd, state->buf, state->count,
state->offset, 0, NULL);
#else
state->ret = glfs_pread(state->fd, state->buf, state->count,
state->offset, 0);
#endif
} while ((state->ret == -1) && (errno == EINTR));
if (state->ret == -1) {
state->vfs_aio_state.error = errno;
}
PROFILE_TIMESTAMP(&end_time);
state->vfs_aio_state.duration = nsec_time_diff(&end_time, &start_time);
SMBPROFILE_BYTES_ASYNC_SET_IDLE(state->profile_bytes);
}
static int vfs_gluster_pread_state_destructor(struct vfs_gluster_pread_state *state)
{
return -1;
}
static void vfs_gluster_pread_done(struct tevent_req *subreq)
{
struct tevent_req *req = tevent_req_callback_data(
subreq, struct tevent_req);
struct vfs_gluster_pread_state *state = tevent_req_data(
req, struct vfs_gluster_pread_state);
int ret;
ret = pthreadpool_tevent_job_recv(subreq);
TALLOC_FREE(subreq);
SMBPROFILE_BYTES_ASYNC_END(state->profile_bytes);
talloc_set_destructor(state, NULL);
if (ret != 0) {
if (ret != EAGAIN) {
tevent_req_error(req, ret);
return;
}
/*
* If we get EAGAIN from pthreadpool_tevent_job_recv() this
* means the lower level pthreadpool failed to create a new
* thread. Fallback to sync processing in that case to allow
* some progress for the client.
*/
vfs_gluster_pread_do(state);
}
tevent_req_done(req);
}
static ssize_t vfs_gluster_pread_recv(struct tevent_req *req,
struct vfs_aio_state *vfs_aio_state)
{
struct vfs_gluster_pread_state *state = tevent_req_data(
req, struct vfs_gluster_pread_state);
if (tevent_req_is_unix_error(req, &vfs_aio_state->error)) {
return -1;
}
*vfs_aio_state = state->vfs_aio_state;
return state->ret;
}
struct vfs_gluster_pwrite_state {
ssize_t ret;
glfs_fd_t *fd;
const void *buf;
size_t count;
off_t offset;
struct vfs_aio_state vfs_aio_state;
SMBPROFILE_BYTES_ASYNC_STATE(profile_bytes);
};
static void vfs_gluster_pwrite_do(void *private_data);
static void vfs_gluster_pwrite_done(struct tevent_req *subreq);
static int vfs_gluster_pwrite_state_destructor(struct vfs_gluster_pwrite_state *state);
static struct tevent_req *vfs_gluster_pwrite_send(struct vfs_handle_struct
*handle, TALLOC_CTX *mem_ctx,
struct tevent_context *ev,
files_struct *fsp,
const void *data, size_t n,
off_t offset)
{
struct tevent_req *req, *subreq;
struct vfs_gluster_pwrite_state *state;
glfs_fd_t *glfd = vfs_gluster_fetch_glfd(handle, fsp);
if (glfd == NULL) {
DBG_ERR("Failed to fetch gluster fd\n");
return NULL;
}
req = tevent_req_create(mem_ctx, &state, struct vfs_gluster_pwrite_state);
if (req == NULL) {
return NULL;
}
state->ret = -1;
state->fd = glfd;
state->buf = data;
state->count = n;
state->offset = offset;
SMBPROFILE_BYTES_ASYNC_START(syscall_asys_pwrite, profile_p,
state->profile_bytes, n);
SMBPROFILE_BYTES_ASYNC_SET_IDLE(state->profile_bytes);
subreq = pthreadpool_tevent_job_send(
state, ev, handle->conn->sconn->pool,
vfs_gluster_pwrite_do, state);
if (tevent_req_nomem(subreq, req)) {
return tevent_req_post(req, ev);
}
tevent_req_set_callback(subreq, vfs_gluster_pwrite_done, req);
talloc_set_destructor(state, vfs_gluster_pwrite_state_destructor);
return req;
}
static void vfs_gluster_pwrite_do(void *private_data)
{
struct vfs_gluster_pwrite_state *state = talloc_get_type_abort(
private_data, struct vfs_gluster_pwrite_state);
struct timespec start_time;
struct timespec end_time;
SMBPROFILE_BYTES_ASYNC_SET_BUSY(state->profile_bytes);
PROFILE_TIMESTAMP(&start_time);
do {
#ifdef HAVE_GFAPI_VER_7_6
state->ret = glfs_pwrite(state->fd, state->buf, state->count,
state->offset, 0, NULL, NULL);
#else
state->ret = glfs_pwrite(state->fd, state->buf, state->count,
state->offset, 0);
#endif
} while ((state->ret == -1) && (errno == EINTR));
if (state->ret == -1) {
state->vfs_aio_state.error = errno;
}
PROFILE_TIMESTAMP(&end_time);
state->vfs_aio_state.duration = nsec_time_diff(&end_time, &start_time);
SMBPROFILE_BYTES_ASYNC_SET_IDLE(state->profile_bytes);
}
static int vfs_gluster_pwrite_state_destructor(struct vfs_gluster_pwrite_state *state)
{
return -1;
}
static void vfs_gluster_pwrite_done(struct tevent_req *subreq)
{
struct tevent_req *req = tevent_req_callback_data(
subreq, struct tevent_req);
struct vfs_gluster_pwrite_state *state = tevent_req_data(
req, struct vfs_gluster_pwrite_state);
int ret;
ret = pthreadpool_tevent_job_recv(subreq);
TALLOC_FREE(subreq);
SMBPROFILE_BYTES_ASYNC_END(state->profile_bytes);
talloc_set_destructor(state, NULL);
if (ret != 0) {
if (ret != EAGAIN) {
tevent_req_error(req, ret);
return;
}
/*
* If we get EAGAIN from pthreadpool_tevent_job_recv() this
* means the lower level pthreadpool failed to create a new
* thread. Fallback to sync processing in that case to allow
* some progress for the client.
*/
vfs_gluster_pwrite_do(state);
}
tevent_req_done(req);
}
static ssize_t vfs_gluster_pwrite_recv(struct tevent_req *req,
struct vfs_aio_state *vfs_aio_state)
{
struct vfs_gluster_pwrite_state *state = tevent_req_data(
req, struct vfs_gluster_pwrite_state);
if (tevent_req_is_unix_error(req, &vfs_aio_state->error)) {
return -1;
}
*vfs_aio_state = state->vfs_aio_state;
return state->ret;
}
static ssize_t vfs_gluster_pwrite(struct vfs_handle_struct *handle,
files_struct *fsp, const void *data,
size_t n, off_t offset)
{
ssize_t ret;
glfs_fd_t *glfd = NULL;
START_PROFILE_BYTES(syscall_pwrite, n);
glfd = vfs_gluster_fetch_glfd(handle, fsp);
if (glfd == NULL) {
END_PROFILE_BYTES(syscall_pwrite);
DBG_ERR("Failed to fetch gluster fd\n");
return -1;
}
#ifdef HAVE_GFAPI_VER_7_6
ret = glfs_pwrite(glfd, data, n, offset, 0, NULL, NULL);
#else
ret = glfs_pwrite(glfd, data, n, offset, 0);
#endif
END_PROFILE_BYTES(syscall_pwrite);
return ret;
}
static off_t vfs_gluster_lseek(struct vfs_handle_struct *handle,
files_struct *fsp, off_t offset, int whence)
{
off_t ret = 0;
glfs_fd_t *glfd = NULL;
START_PROFILE(syscall_lseek);
glfd = vfs_gluster_fetch_glfd(handle, fsp);
if (glfd == NULL) {
END_PROFILE(syscall_lseek);
DBG_ERR("Failed to fetch gluster fd\n");
return -1;
}
ret = glfs_lseek(glfd, offset, whence);
END_PROFILE(syscall_lseek);
return ret;
}
static ssize_t vfs_gluster_sendfile(struct vfs_handle_struct *handle, int tofd,
files_struct *fromfsp,
const DATA_BLOB *hdr,
off_t offset, size_t n)
{
errno = ENOTSUP;
return -1;
}
static ssize_t vfs_gluster_recvfile(struct vfs_handle_struct *handle,
int fromfd, files_struct *tofsp,
off_t offset, size_t n)
{
errno = ENOTSUP;
return -1;
}
static int vfs_gluster_renameat(struct vfs_handle_struct *handle,
files_struct *srcfsp,
const struct smb_filename *smb_fname_src,
files_struct *dstfsp,
const struct smb_filename *smb_fname_dst)
{
int ret;
START_PROFILE(syscall_renameat);
ret = glfs_rename(handle->data, smb_fname_src->base_name,
smb_fname_dst->base_name);
END_PROFILE(syscall_renameat);
return ret;
}
struct vfs_gluster_fsync_state {
ssize_t ret;
glfs_fd_t *fd;
struct vfs_aio_state vfs_aio_state;
SMBPROFILE_BYTES_ASYNC_STATE(profile_bytes);
};
static void vfs_gluster_fsync_do(void *private_data);
static void vfs_gluster_fsync_done(struct tevent_req *subreq);
static int vfs_gluster_fsync_state_destructor(struct vfs_gluster_fsync_state *state);
static struct tevent_req *vfs_gluster_fsync_send(struct vfs_handle_struct
*handle, TALLOC_CTX *mem_ctx,
struct tevent_context *ev,
files_struct *fsp)
{
struct tevent_req *req, *subreq;
struct vfs_gluster_fsync_state *state;
glfs_fd_t *glfd = vfs_gluster_fetch_glfd(handle, fsp);
if (glfd == NULL) {
DBG_ERR("Failed to fetch gluster fd\n");
return NULL;
}
req = tevent_req_create(mem_ctx, &state, struct vfs_gluster_fsync_state);
if (req == NULL) {
return NULL;
}
state->ret = -1;
state->fd = glfd;
SMBPROFILE_BYTES_ASYNC_START(syscall_asys_fsync, profile_p,
state->profile_bytes, 0);
SMBPROFILE_BYTES_ASYNC_SET_IDLE(state->profile_bytes);
subreq = pthreadpool_tevent_job_send(
state, ev, handle->conn->sconn->pool, vfs_gluster_fsync_do, state);
if (tevent_req_nomem(subreq, req)) {
return tevent_req_post(req, ev);
}
tevent_req_set_callback(subreq, vfs_gluster_fsync_done, req);
talloc_set_destructor(state, vfs_gluster_fsync_state_destructor);
return req;
}
static void vfs_gluster_fsync_do(void *private_data)
{
struct vfs_gluster_fsync_state *state = talloc_get_type_abort(
private_data, struct vfs_gluster_fsync_state);
struct timespec start_time;
struct timespec end_time;
SMBPROFILE_BYTES_ASYNC_SET_BUSY(state->profile_bytes);
PROFILE_TIMESTAMP(&start_time);
do {
#ifdef HAVE_GFAPI_VER_7_6
state->ret = glfs_fsync(state->fd, NULL, NULL);
#else
state->ret = glfs_fsync(state->fd);
#endif
} while ((state->ret == -1) && (errno == EINTR));
if (state->ret == -1) {
state->vfs_aio_state.error = errno;
}
PROFILE_TIMESTAMP(&end_time);
state->vfs_aio_state.duration = nsec_time_diff(&end_time, &start_time);
SMBPROFILE_BYTES_ASYNC_SET_IDLE(state->profile_bytes);
}
static int vfs_gluster_fsync_state_destructor(struct vfs_gluster_fsync_state *state)
{
return -1;
}
static void vfs_gluster_fsync_done(struct tevent_req *subreq)
{
struct tevent_req *req = tevent_req_callback_data(
subreq, struct tevent_req);
struct vfs_gluster_fsync_state *state = tevent_req_data(
req, struct vfs_gluster_fsync_state);
int ret;
ret = pthreadpool_tevent_job_recv(subreq);
TALLOC_FREE(subreq);
SMBPROFILE_BYTES_ASYNC_END(state->profile_bytes);
talloc_set_destructor(state, NULL);
if (ret != 0) {
if (ret != EAGAIN) {
tevent_req_error(req, ret);
return;
}
/*
* If we get EAGAIN from pthreadpool_tevent_job_recv() this
* means the lower level pthreadpool failed to create a new
* thread. Fallback to sync processing in that case to allow
* some progress for the client.
*/
vfs_gluster_fsync_do(state);
}
tevent_req_done(req);
}
static int vfs_gluster_fsync_recv(struct tevent_req *req,
struct vfs_aio_state *vfs_aio_state)
{
struct vfs_gluster_fsync_state *state = tevent_req_data(
req, struct vfs_gluster_fsync_state);
if (tevent_req_is_unix_error(req, &vfs_aio_state->error)) {
return -1;
}
*vfs_aio_state = state->vfs_aio_state;
return state->ret;
}
static int vfs_gluster_stat(struct vfs_handle_struct *handle,
struct smb_filename *smb_fname)
{
struct stat st;
int ret;
START_PROFILE(syscall_stat);
ret = glfs_stat(handle->data, smb_fname->base_name, &st);
if (ret == 0) {
smb_stat_ex_from_stat(&smb_fname->st, &st);
}
if (ret < 0 && errno != ENOENT) {
DEBUG(0, ("glfs_stat(%s) failed: %s\n",
smb_fname->base_name, strerror(errno)));
}
END_PROFILE(syscall_stat);
return ret;
}
static int vfs_gluster_fstat(struct vfs_handle_struct *handle,
files_struct *fsp, SMB_STRUCT_STAT *sbuf)
{
struct stat st;
int ret;
glfs_fd_t *glfd = NULL;
START_PROFILE(syscall_fstat);
glfd = vfs_gluster_fetch_glfd(handle, fsp);
if (glfd == NULL) {
END_PROFILE(syscall_fstat);
DBG_ERR("Failed to fetch gluster fd\n");
return -1;
}
ret = glfs_fstat(glfd, &st);
if (ret == 0) {
smb_stat_ex_from_stat(sbuf, &st);
}
if (ret < 0) {
DEBUG(0, ("glfs_fstat(%d) failed: %s\n",
fsp->fh->fd, strerror(errno)));
}
END_PROFILE(syscall_fstat);
return ret;
}
static int vfs_gluster_lstat(struct vfs_handle_struct *handle,
struct smb_filename *smb_fname)
{
struct stat st;
int ret;
START_PROFILE(syscall_lstat);
ret = glfs_lstat(handle->data, smb_fname->base_name, &st);
if (ret == 0) {
smb_stat_ex_from_stat(&smb_fname->st, &st);
}
if (ret < 0 && errno != ENOENT) {
DEBUG(0, ("glfs_lstat(%s) failed: %s\n",
smb_fname->base_name, strerror(errno)));
}
END_PROFILE(syscall_lstat);
return ret;
}
static uint64_t vfs_gluster_get_alloc_size(struct vfs_handle_struct *handle,
files_struct *fsp,
const SMB_STRUCT_STAT *sbuf)
{
uint64_t ret;
START_PROFILE(syscall_get_alloc_size);
ret = sbuf->st_ex_blocks * 512;
END_PROFILE(syscall_get_alloc_size);
return ret;
}
static int vfs_gluster_unlinkat(struct vfs_handle_struct *handle,
struct files_struct *dirfsp,
const struct smb_filename *smb_fname,
int flags)
{
int ret;
START_PROFILE(syscall_unlinkat);
SMB_ASSERT(dirfsp == dirfsp->conn->cwd_fsp);
if (flags & AT_REMOVEDIR) {
ret = glfs_rmdir(handle->data, smb_fname->base_name);
} else {
ret = glfs_unlink(handle->data, smb_fname->base_name);
}
END_PROFILE(syscall_unlinkat);
return ret;
}
static int vfs_gluster_chmod(struct vfs_handle_struct *handle,
const struct smb_filename *smb_fname,
mode_t mode)
{
int ret;
START_PROFILE(syscall_chmod);
ret = glfs_chmod(handle->data, smb_fname->base_name, mode);
END_PROFILE(syscall_chmod);
return ret;
}
static int vfs_gluster_fchmod(struct vfs_handle_struct *handle,
files_struct *fsp, mode_t mode)
{
int ret;
glfs_fd_t *glfd = NULL;
START_PROFILE(syscall_fchmod);
glfd = vfs_gluster_fetch_glfd(handle, fsp);
if (glfd == NULL) {
END_PROFILE(syscall_fchmod);
DBG_ERR("Failed to fetch gluster fd\n");
return -1;
}
ret = glfs_fchmod(glfd, mode);
END_PROFILE(syscall_fchmod);
return ret;
}
static int vfs_gluster_fchown(struct vfs_handle_struct *handle,
files_struct *fsp, uid_t uid, gid_t gid)
{
int ret;
glfs_fd_t *glfd = NULL;
START_PROFILE(syscall_fchown);
glfd = vfs_gluster_fetch_glfd(handle, fsp);
if (glfd == NULL) {
END_PROFILE(syscall_fchown);
DBG_ERR("Failed to fetch gluster fd\n");
return -1;
}
ret = glfs_fchown(glfd, uid, gid);
END_PROFILE(syscall_fchown);
return ret;
}
static int vfs_gluster_lchown(struct vfs_handle_struct *handle,
const struct smb_filename *smb_fname,
uid_t uid,
gid_t gid)
{
int ret;
START_PROFILE(syscall_lchown);
ret = glfs_lchown(handle->data, smb_fname->base_name, uid, gid);
END_PROFILE(syscall_lchown);
return ret;
}
static int vfs_gluster_chdir(struct vfs_handle_struct *handle,
const struct smb_filename *smb_fname)
{
int ret;
START_PROFILE(syscall_chdir);
ret = glfs_chdir(handle->data, smb_fname->base_name);
END_PROFILE(syscall_chdir);
return ret;
}
static struct smb_filename *vfs_gluster_getwd(struct vfs_handle_struct *handle,
TALLOC_CTX *ctx)
{
char *cwd;
char *ret;
struct smb_filename *smb_fname = NULL;
START_PROFILE(syscall_getwd);
cwd = SMB_CALLOC_ARRAY(char, PATH_MAX);
if (cwd == NULL) {
END_PROFILE(syscall_getwd);
return NULL;
}
ret = glfs_getcwd(handle->data, cwd, PATH_MAX - 1);
END_PROFILE(syscall_getwd);
if (ret == NULL) {
SAFE_FREE(cwd);
return NULL;
}
smb_fname = synthetic_smb_fname(ctx,
ret,
NULL,
NULL,
0,
0);
SAFE_FREE(cwd);
return smb_fname;
}
static int vfs_gluster_ntimes(struct vfs_handle_struct *handle,
const struct smb_filename *smb_fname,
struct smb_file_time *ft)
{
int ret = -1;
struct timespec times[2];
START_PROFILE(syscall_ntimes);
if (is_omit_timespec(&ft->atime)) {
times[0].tv_sec = smb_fname->st.st_ex_atime.tv_sec;
times[0].tv_nsec = smb_fname->st.st_ex_atime.tv_nsec;
} else {
times[0].tv_sec = ft->atime.tv_sec;
times[0].tv_nsec = ft->atime.tv_nsec;
}
if (is_omit_timespec(&ft->mtime)) {
times[1].tv_sec = smb_fname->st.st_ex_mtime.tv_sec;
times[1].tv_nsec = smb_fname->st.st_ex_mtime.tv_nsec;
} else {
times[1].tv_sec = ft->mtime.tv_sec;
times[1].tv_nsec = ft->mtime.tv_nsec;
}
if ((timespec_compare(&times[0],
&smb_fname->st.st_ex_atime) == 0) &&
(timespec_compare(&times[1],
&smb_fname->st.st_ex_mtime) == 0)) {
END_PROFILE(syscall_ntimes);
return 0;
}
ret = glfs_utimens(handle->data, smb_fname->base_name, times);
END_PROFILE(syscall_ntimes);
return ret;
}
static int vfs_gluster_ftruncate(struct vfs_handle_struct *handle,
files_struct *fsp, off_t offset)
{
int ret;
glfs_fd_t *glfd = NULL;
START_PROFILE(syscall_ftruncate);
glfd = vfs_gluster_fetch_glfd(handle, fsp);
if (glfd == NULL) {
END_PROFILE(syscall_ftruncate);
DBG_ERR("Failed to fetch gluster fd\n");
return -1;
}
#ifdef HAVE_GFAPI_VER_7_6
ret = glfs_ftruncate(glfd, offset, NULL, NULL);
#else
ret = glfs_ftruncate(glfd, offset);
#endif
END_PROFILE(syscall_ftruncate);
return ret;
}
static int vfs_gluster_fallocate(struct vfs_handle_struct *handle,
struct files_struct *fsp,
uint32_t mode,
off_t offset, off_t len)
{
int ret;
#ifdef HAVE_GFAPI_VER_6
glfs_fd_t *glfd = NULL;
int keep_size, punch_hole;
START_PROFILE(syscall_fallocate);
glfd = vfs_gluster_fetch_glfd(handle, fsp);
if (glfd == NULL) {
END_PROFILE(syscall_fallocate);
DBG_ERR("Failed to fetch gluster fd\n");
return -1;
}
keep_size = mode & VFS_FALLOCATE_FL_KEEP_SIZE;
punch_hole = mode & VFS_FALLOCATE_FL_PUNCH_HOLE;
mode &= ~(VFS_FALLOCATE_FL_KEEP_SIZE|VFS_FALLOCATE_FL_PUNCH_HOLE);
if (mode != 0) {
END_PROFILE(syscall_fallocate);
errno = ENOTSUP;
return -1;
}
if (punch_hole) {
ret = glfs_discard(glfd, offset, len);
if (ret != 0) {
DBG_DEBUG("glfs_discard failed: %s\n",
strerror(errno));
}
}
ret = glfs_fallocate(glfd, keep_size, offset, len);
END_PROFILE(syscall_fallocate);
#else
errno = ENOTSUP;
ret = -1;
#endif
return ret;
}
static struct smb_filename *vfs_gluster_realpath(struct vfs_handle_struct *handle,
TALLOC_CTX *ctx,
const struct smb_filename *smb_fname)
{
char *result = NULL;
struct smb_filename *result_fname = NULL;
char *resolved_path = NULL;
START_PROFILE(syscall_realpath);
resolved_path = SMB_MALLOC_ARRAY(char, PATH_MAX+1);
if (resolved_path == NULL) {
END_PROFILE(syscall_realpath);
errno = ENOMEM;
return NULL;
}
result = glfs_realpath(handle->data,
smb_fname->base_name,
resolved_path);
if (result != NULL) {
result_fname = synthetic_smb_fname(ctx,
result,
NULL,
NULL,
0,
0);
}
SAFE_FREE(resolved_path);
END_PROFILE(syscall_realpath);
return result_fname;
}
static bool vfs_gluster_lock(struct vfs_handle_struct *handle,
files_struct *fsp, int op, off_t offset,
off_t count, int type)
{
struct flock flock = { 0, };
int ret;
glfs_fd_t *glfd = NULL;
bool ok = false;
START_PROFILE(syscall_fcntl_lock);
glfd = vfs_gluster_fetch_glfd(handle, fsp);
if (glfd == NULL) {
DBG_ERR("Failed to fetch gluster fd\n");
ok = false;
goto out;
}
flock.l_type = type;
flock.l_whence = SEEK_SET;
flock.l_start = offset;
flock.l_len = count;
flock.l_pid = 0;
ret = glfs_posix_lock(glfd, op, &flock);
if (op == F_GETLK) {
/* lock query, true if someone else has locked */
if ((ret != -1) &&
(flock.l_type != F_UNLCK) &&
(flock.l_pid != 0) && (flock.l_pid != getpid())) {
ok = true;
goto out;
}
/* not me */
ok = false;
goto out;
}
if (ret == -1) {
ok = false;
goto out;
}
ok = true;
out:
END_PROFILE(syscall_fcntl_lock);
return ok;
}
static int vfs_gluster_kernel_flock(struct vfs_handle_struct *handle,
files_struct *fsp, uint32_t share_access,
uint32_t access_mask)
{
errno = ENOSYS;
return -1;
}
static int vfs_gluster_fcntl(vfs_handle_struct *handle,
files_struct *fsp, int cmd, va_list cmd_arg)
{
/*
* SMB_VFS_FCNTL() is currently only called by vfs_set_blocking() to
* clear O_NONBLOCK, etc for LOCK_MAND and FIFOs. Ignore it.
*/
if (cmd == F_GETFL) {
return 0;
} else if (cmd == F_SETFL) {
va_list dup_cmd_arg;
int opt;
va_copy(dup_cmd_arg, cmd_arg);
opt = va_arg(dup_cmd_arg, int);
va_end(dup_cmd_arg);
if (opt == 0) {
return 0;
}
DBG_ERR("unexpected fcntl SETFL(%d)\n", opt);
goto err_out;
}
DBG_ERR("unexpected fcntl: %d\n", cmd);
err_out:
errno = EINVAL;
return -1;
}
static int vfs_gluster_linux_setlease(struct vfs_handle_struct *handle,
files_struct *fsp, int leasetype)
{
errno = ENOSYS;
return -1;
}
static bool vfs_gluster_getlock(struct vfs_handle_struct *handle,
files_struct *fsp, off_t *poffset,
off_t *pcount, int *ptype, pid_t *ppid)
{
struct flock flock = { 0, };
int ret;
glfs_fd_t *glfd = NULL;
START_PROFILE(syscall_fcntl_getlock);
glfd = vfs_gluster_fetch_glfd(handle, fsp);
if (glfd == NULL) {
END_PROFILE(syscall_fcntl_getlock);
DBG_ERR("Failed to fetch gluster fd\n");
return false;
}
flock.l_type = *ptype;
flock.l_whence = SEEK_SET;
flock.l_start = *poffset;
flock.l_len = *pcount;
flock.l_pid = 0;
ret = glfs_posix_lock(glfd, F_GETLK, &flock);
if (ret == -1) {
END_PROFILE(syscall_fcntl_getlock);
return false;
}
*ptype = flock.l_type;
*poffset = flock.l_start;
*pcount = flock.l_len;
*ppid = flock.l_pid;
END_PROFILE(syscall_fcntl_getlock);
return true;
}
static int vfs_gluster_symlinkat(struct vfs_handle_struct *handle,
const struct smb_filename *link_target,
struct files_struct *dirfsp,
const struct smb_filename *new_smb_fname)
{
int ret;
START_PROFILE(syscall_symlinkat);
SMB_ASSERT(dirfsp == dirfsp->conn->cwd_fsp);
ret = glfs_symlink(handle->data,
link_target->base_name,
new_smb_fname->base_name);
END_PROFILE(syscall_symlinkat);
return ret;
}
static int vfs_gluster_readlinkat(struct vfs_handle_struct *handle,
files_struct *dirfsp,
const struct smb_filename *smb_fname,
char *buf,
size_t bufsiz)
{
int ret;
START_PROFILE(syscall_readlinkat);
SMB_ASSERT(dirfsp == dirfsp->conn->cwd_fsp);
ret = glfs_readlink(handle->data, smb_fname->base_name, buf, bufsiz);
END_PROFILE(syscall_readlinkat);
return ret;
}
static int vfs_gluster_linkat(struct vfs_handle_struct *handle,
files_struct *srcfsp,
const struct smb_filename *old_smb_fname,
files_struct *dstfsp,
const struct smb_filename *new_smb_fname,
int flags)
{
int ret;
START_PROFILE(syscall_linkat);
SMB_ASSERT(srcfsp == srcfsp->conn->cwd_fsp);
SMB_ASSERT(dstfsp == dstfsp->conn->cwd_fsp);
ret = glfs_link(handle->data,
old_smb_fname->base_name,
new_smb_fname->base_name);
END_PROFILE(syscall_linkat);
return ret;
}
static int vfs_gluster_mknodat(struct vfs_handle_struct *handle,
files_struct *dirfsp,
const struct smb_filename *smb_fname,
mode_t mode,
SMB_DEV_T dev)
{
int ret;
START_PROFILE(syscall_mknodat);
SMB_ASSERT(dirfsp == dirfsp->conn->cwd_fsp);
ret = glfs_mknod(handle->data, smb_fname->base_name, mode, dev);
END_PROFILE(syscall_mknodat);
return ret;
}
static int vfs_gluster_chflags(struct vfs_handle_struct *handle,
const struct smb_filename *smb_fname,
unsigned int flags)
{
errno = ENOSYS;
return -1;
}
static int vfs_gluster_get_real_filename(struct vfs_handle_struct *handle,
const struct smb_filename *path,
const char *name,
TALLOC_CTX *mem_ctx,
char **found_name)
{
int ret;
char key_buf[GLUSTER_NAME_MAX + 64];
char val_buf[GLUSTER_NAME_MAX + 1];
if (strlen(name) >= GLUSTER_NAME_MAX) {
errno = ENAMETOOLONG;
return -1;
}
snprintf(key_buf, GLUSTER_NAME_MAX + 64,
"glusterfs.get_real_filename:%s", name);
ret = glfs_getxattr(handle->data, path->base_name, key_buf, val_buf,
GLUSTER_NAME_MAX + 1);
if (ret == -1) {
if (errno == ENOATTR) {
errno = ENOENT;
}
return -1;
}
*found_name = talloc_strdup(mem_ctx, val_buf);
if (found_name[0] == NULL) {
errno = ENOMEM;
return -1;
}
return 0;
}
static const char *vfs_gluster_connectpath(struct vfs_handle_struct *handle,
const struct smb_filename *smb_fname)
{
return handle->conn->connectpath;
}
/* EA Operations */
static ssize_t vfs_gluster_getxattr(struct vfs_handle_struct *handle,
const struct smb_filename *smb_fname,
const char *name,
void *value,
size_t size)
{
return glfs_getxattr(handle->data, smb_fname->base_name,
name, value, size);
}
static ssize_t vfs_gluster_fgetxattr(struct vfs_handle_struct *handle,
files_struct *fsp, const char *name,
void *value, size_t size)
{
glfs_fd_t *glfd = vfs_gluster_fetch_glfd(handle, fsp);
if (glfd == NULL) {
DBG_ERR("Failed to fetch gluster fd\n");
return -1;
}
return glfs_fgetxattr(glfd, name, value, size);
}
static ssize_t vfs_gluster_listxattr(struct vfs_handle_struct *handle,
const struct smb_filename *smb_fname,
char *list,
size_t size)
{
return glfs_listxattr(handle->data, smb_fname->base_name, list, size);
}
static ssize_t vfs_gluster_flistxattr(struct vfs_handle_struct *handle,
files_struct *fsp, char *list,
size_t size)
{
glfs_fd_t *glfd = vfs_gluster_fetch_glfd(handle, fsp);
if (glfd == NULL) {
DBG_ERR("Failed to fetch gluster fd\n");
return -1;
}
return glfs_flistxattr(glfd, list, size);
}
static int vfs_gluster_removexattr(struct vfs_handle_struct *handle,
const struct smb_filename *smb_fname,
const char *name)
{
return glfs_removexattr(handle->data, smb_fname->base_name, name);
}
static int vfs_gluster_fremovexattr(struct vfs_handle_struct *handle,
files_struct *fsp, const char *name)
{
glfs_fd_t *glfd = vfs_gluster_fetch_glfd(handle, fsp);
if (glfd == NULL) {
DBG_ERR("Failed to fetch gluster fd\n");
return -1;
}
return glfs_fremovexattr(glfd, name);
}
static int vfs_gluster_setxattr(struct vfs_handle_struct *handle,
const struct smb_filename *smb_fname,
const char *name,
const void *value, size_t size, int flags)
{
return glfs_setxattr(handle->data, smb_fname->base_name, name, value, size, flags);
}
static int vfs_gluster_fsetxattr(struct vfs_handle_struct *handle,
files_struct *fsp, const char *name,
const void *value, size_t size, int flags)
{
glfs_fd_t *glfd = vfs_gluster_fetch_glfd(handle, fsp);
if (glfd == NULL) {
DBG_ERR("Failed to fetch gluster fd\n");
return -1;
}
return glfs_fsetxattr(glfd, name, value, size, flags);
}
/* AIO Operations */
static bool vfs_gluster_aio_force(struct vfs_handle_struct *handle,
files_struct *fsp)
{
return false;
}
static NTSTATUS vfs_gluster_create_dfs_pathat(struct vfs_handle_struct *handle,
struct files_struct *dirfsp,
const struct smb_filename *smb_fname,
const struct referral *reflist,
size_t referral_count)
{
TALLOC_CTX *frame = talloc_stackframe();
NTSTATUS status = NT_STATUS_NO_MEMORY;
int ret;
char *msdfs_link = NULL;
SMB_ASSERT(dirfsp == dirfsp->conn->cwd_fsp);
/* Form the msdfs_link contents */
msdfs_link = msdfs_link_string(frame,
reflist,
referral_count);
if (msdfs_link == NULL) {
goto out;
}
ret = glfs_symlink(handle->data,
msdfs_link,
smb_fname->base_name);
if (ret == 0) {
status = NT_STATUS_OK;
} else {
status = map_nt_error_from_unix(errno);
}
out:
TALLOC_FREE(frame);
return status;
}
/*
* Read and return the contents of a DFS redirect given a
* pathname. A caller can pass in NULL for ppreflist and
* preferral_count but still determine if this was a
* DFS redirect point by getting NT_STATUS_OK back
* without incurring the overhead of reading and parsing
* the referral contents.
*/
static NTSTATUS vfs_gluster_read_dfs_pathat(struct vfs_handle_struct *handle,
TALLOC_CTX *mem_ctx,
struct files_struct *dirfsp,
struct smb_filename *smb_fname,
struct referral **ppreflist,
size_t *preferral_count)
{
NTSTATUS status = NT_STATUS_NO_MEMORY;
size_t bufsize;
char *link_target = NULL;
int referral_len;
bool ok;
#if defined(HAVE_BROKEN_READLINK)
char link_target_buf[PATH_MAX];
#else
char link_target_buf[7];
#endif
struct stat st;
int ret;
SMB_ASSERT(dirfsp == dirfsp->conn->cwd_fsp);
if (is_named_stream(smb_fname)) {
status = NT_STATUS_OBJECT_NAME_NOT_FOUND;
goto err;
}
if (ppreflist == NULL && preferral_count == NULL) {
/*
* We're only checking if this is a DFS
* redirect. We don't need to return data.
*/
bufsize = sizeof(link_target_buf);
link_target = link_target_buf;
} else {
bufsize = PATH_MAX;
link_target = talloc_array(mem_ctx, char, bufsize);
if (!link_target) {
goto err;
}
}
ret = glfs_lstat(handle->data, smb_fname->base_name, &st);
if (ret < 0) {
status = map_nt_error_from_unix(errno);
goto err;
}
referral_len = glfs_readlink(handle->data,
smb_fname->base_name,
link_target,
bufsize - 1);
if (referral_len < 0) {
if (errno == EINVAL) {
DBG_INFO("%s is not a link.\n", smb_fname->base_name);
status = NT_STATUS_OBJECT_TYPE_MISMATCH;
} else {
status = map_nt_error_from_unix(errno);
DBG_ERR("Error reading "
"msdfs link %s: %s\n",
smb_fname->base_name,
strerror(errno));
}
goto err;
}
link_target[referral_len] = '\0';
DBG_INFO("%s -> %s\n",
smb_fname->base_name,
link_target);
if (!strnequal(link_target, "msdfs:", 6)) {
status = NT_STATUS_OBJECT_TYPE_MISMATCH;
goto err;
}
if (ppreflist == NULL && preferral_count == NULL) {
/* Early return for checking if this is a DFS link. */
smb_stat_ex_from_stat(&smb_fname->st, &st);
return NT_STATUS_OK;
}
ok = parse_msdfs_symlink(mem_ctx,
lp_msdfs_shuffle_referrals(SNUM(handle->conn)),
link_target,
ppreflist,
preferral_count);
if (ok) {
smb_stat_ex_from_stat(&smb_fname->st, &st);
status = NT_STATUS_OK;
} else {
status = NT_STATUS_NO_MEMORY;
}
err:
if (link_target != link_target_buf) {
TALLOC_FREE(link_target);
}
return status;
}
static struct vfs_fn_pointers glusterfs_fns = {
/* Disk Operations */
.connect_fn = vfs_gluster_connect,
.disconnect_fn = vfs_gluster_disconnect,
.disk_free_fn = vfs_gluster_disk_free,
.get_quota_fn = vfs_gluster_get_quota,
.set_quota_fn = vfs_gluster_set_quota,
.statvfs_fn = vfs_gluster_statvfs,
.fs_capabilities_fn = vfs_gluster_fs_capabilities,
.get_dfs_referrals_fn = NULL,
/* Directory Operations */
.fdopendir_fn = vfs_gluster_fdopendir,
.readdir_fn = vfs_gluster_readdir,
.seekdir_fn = vfs_gluster_seekdir,
.telldir_fn = vfs_gluster_telldir,
.rewind_dir_fn = vfs_gluster_rewinddir,
.mkdirat_fn = vfs_gluster_mkdirat,
.closedir_fn = vfs_gluster_closedir,
/* File Operations */
.openat_fn = vfs_gluster_openat,
.create_file_fn = NULL,
.close_fn = vfs_gluster_close,
.pread_fn = vfs_gluster_pread,
.pread_send_fn = vfs_gluster_pread_send,
.pread_recv_fn = vfs_gluster_pread_recv,
.pwrite_fn = vfs_gluster_pwrite,
.pwrite_send_fn = vfs_gluster_pwrite_send,
.pwrite_recv_fn = vfs_gluster_pwrite_recv,
.lseek_fn = vfs_gluster_lseek,
.sendfile_fn = vfs_gluster_sendfile,
.recvfile_fn = vfs_gluster_recvfile,
.renameat_fn = vfs_gluster_renameat,
.fsync_send_fn = vfs_gluster_fsync_send,
.fsync_recv_fn = vfs_gluster_fsync_recv,
.stat_fn = vfs_gluster_stat,
.fstat_fn = vfs_gluster_fstat,
.lstat_fn = vfs_gluster_lstat,
.get_alloc_size_fn = vfs_gluster_get_alloc_size,
.unlinkat_fn = vfs_gluster_unlinkat,
.chmod_fn = vfs_gluster_chmod,
.fchmod_fn = vfs_gluster_fchmod,
.fchown_fn = vfs_gluster_fchown,
.lchown_fn = vfs_gluster_lchown,
.chdir_fn = vfs_gluster_chdir,
.getwd_fn = vfs_gluster_getwd,
.ntimes_fn = vfs_gluster_ntimes,
.ftruncate_fn = vfs_gluster_ftruncate,
.fallocate_fn = vfs_gluster_fallocate,
.lock_fn = vfs_gluster_lock,
.kernel_flock_fn = vfs_gluster_kernel_flock,
.fcntl_fn = vfs_gluster_fcntl,
.linux_setlease_fn = vfs_gluster_linux_setlease,
.getlock_fn = vfs_gluster_getlock,
.symlinkat_fn = vfs_gluster_symlinkat,
.readlinkat_fn = vfs_gluster_readlinkat,
.linkat_fn = vfs_gluster_linkat,
.mknodat_fn = vfs_gluster_mknodat,
.realpath_fn = vfs_gluster_realpath,
.chflags_fn = vfs_gluster_chflags,
.file_id_create_fn = NULL,
.streaminfo_fn = NULL,
.get_real_filename_fn = vfs_gluster_get_real_filename,
.connectpath_fn = vfs_gluster_connectpath,
.create_dfs_pathat_fn = vfs_gluster_create_dfs_pathat,
.read_dfs_pathat_fn = vfs_gluster_read_dfs_pathat,
.brl_lock_windows_fn = NULL,
.brl_unlock_windows_fn = NULL,
.strict_lock_check_fn = NULL,
.translate_name_fn = NULL,
.fsctl_fn = NULL,
/* NT ACL Operations */
.fget_nt_acl_fn = NULL,
.get_nt_acl_at_fn = NULL,
.fset_nt_acl_fn = NULL,
.audit_file_fn = NULL,
/* Posix ACL Operations */
.sys_acl_get_file_fn = posixacl_xattr_acl_get_file,
.sys_acl_get_fd_fn = posixacl_xattr_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 = posixacl_xattr_acl_set_file,
.sys_acl_set_fd_fn = posixacl_xattr_acl_set_fd,
.sys_acl_delete_def_file_fn = posixacl_xattr_acl_delete_def_file,
/* EA Operations */
.getxattr_fn = vfs_gluster_getxattr,
.getxattrat_send_fn = vfs_not_implemented_getxattrat_send,
.getxattrat_recv_fn = vfs_not_implemented_getxattrat_recv,
.fgetxattr_fn = vfs_gluster_fgetxattr,
.listxattr_fn = vfs_gluster_listxattr,
.flistxattr_fn = vfs_gluster_flistxattr,
.removexattr_fn = vfs_gluster_removexattr,
.fremovexattr_fn = vfs_gluster_fremovexattr,
.setxattr_fn = vfs_gluster_setxattr,
.fsetxattr_fn = vfs_gluster_fsetxattr,
/* AIO Operations */
.aio_force_fn = vfs_gluster_aio_force,
/* Durable handle Operations */
.durable_cookie_fn = NULL,
.durable_disconnect_fn = NULL,
.durable_reconnect_fn = NULL,
};
static_decl_vfs;
NTSTATUS vfs_glusterfs_init(TALLOC_CTX *ctx)
{
return smb_register_vfs(SMB_VFS_INTERFACE_VERSION,
"glusterfs", &glusterfs_fns);
}