+++ /dev/null
-/*
- * Unix SMB/CIFS implementation.
- * Provide a connection to GPFS specific features
- * Copyright (C) Volker Lendecke 2005
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, see <http://www.gnu.org/licenses/>.
- */
-
-#include "includes.h"
-#include "system/filesys.h"
-#include "smbd/smbd.h"
-
-#include <fcntl.h>
-#include <gpfs_fcntl.h>
-#include "libcli/security/security.h"
-#include "vfs_gpfs.h"
-
-static int (*gpfs_set_share_fn)(int fd, unsigned int allow, unsigned int deny);
-static int (*gpfs_set_lease_fn)(int fd, unsigned int type);
-static int (*gpfs_getacl_fn)(char *pathname, int flags, void *acl);
-static int (*gpfs_putacl_fn)(char *pathname, int flags, void *acl);
-static int (*gpfs_get_realfilename_path_fn)(char *pathname, char *filenamep,
- int *len);
-static int (*gpfs_set_winattrs_path_fn)(char *pathname, int flags,
- struct gpfs_winattr *attrs);
-static int (*gpfs_get_winattrs_path_fn)(char *pathname,
- struct gpfs_winattr *attrs);
-static int (*gpfs_get_winattrs_fn)(int fd, struct gpfs_winattr *attrs);
-static int (*gpfs_prealloc_fn)(int fd, gpfs_off64_t start, gpfs_off64_t bytes);
-static int (*gpfs_ftruncate_fn)(int fd, gpfs_off64_t length);
-static int (*gpfs_lib_init_fn)(int flags);
-static int (*gpfs_set_times_path_fn)(char *pathname, int flags,
- gpfs_timestruc_t times[4]);
-static int (*gpfs_quotactl_fn)(char *pathname, int cmd, int id, void *bufp);
-static int (*gpfs_fcntl_fn)(int fd, void *argp);
-static int (*gpfs_getfilesetid_fn)(char *pathname, char *name, int *idP);
-
-int gpfswrap_init(void)
-{
- static void *l;
-
- if (l != NULL) {
- return 0;
- }
-
- l = dlopen("libgpfs.so", RTLD_LAZY);
- if (l == NULL) {
- return -1;
- }
-
- gpfs_set_share_fn = dlsym(l, "gpfs_set_share");
- gpfs_set_lease_fn = dlsym(l, "gpfs_set_lease");
- gpfs_getacl_fn = dlsym(l, "gpfs_getacl");
- gpfs_putacl_fn = dlsym(l, "gpfs_putacl");
- gpfs_get_realfilename_path_fn = dlsym(l, "gpfs_get_realfilename_path");
- gpfs_set_winattrs_path_fn = dlsym(l, "gpfs_set_winattrs_path");
- gpfs_get_winattrs_path_fn = dlsym(l, "gpfs_get_winattrs_path");
- gpfs_get_winattrs_fn = dlsym(l, "gpfs_get_winattrs");
- gpfs_prealloc_fn = dlsym(l, "gpfs_prealloc");
- gpfs_ftruncate_fn = dlsym(l, "gpfs_ftruncate");
- gpfs_lib_init_fn = dlsym(l, "gpfs_lib_init");
- gpfs_set_times_path_fn = dlsym(l, "gpfs_set_times_path");
- gpfs_quotactl_fn = dlsym(l, "gpfs_quotactl");
- gpfs_fcntl_fn = dlsym(l, "gpfs_fcntl");
- gpfs_getfilesetid_fn = dlsym(l, "gpfs_getfilesetid");
-
- return 0;
-}
-
-int gpfswrap_set_share(int fd, unsigned int allow, unsigned int deny)
-{
- if (gpfs_set_share_fn == NULL) {
- errno = ENOSYS;
- return -1;
- }
-
- return gpfs_set_share_fn(fd, allow, deny);
-}
-
-int gpfswrap_set_lease(int fd, unsigned int type)
-{
- if (gpfs_set_lease_fn == NULL) {
- errno = ENOSYS;
- return -1;
- }
-
- return gpfs_set_lease_fn(fd, type);
-}
-
-int gpfswrap_getacl(char *pathname, int flags, void *acl)
-{
- if (gpfs_getacl_fn == NULL) {
- errno = ENOSYS;
- return -1;
- }
-
- return gpfs_getacl_fn(pathname, flags, acl);
-}
-
-int gpfswrap_putacl(char *pathname, int flags, void *acl)
-{
- if (gpfs_putacl_fn == NULL) {
- errno = ENOSYS;
- return -1;
- }
-
- return gpfs_putacl_fn(pathname, flags, acl);
-}
-
-int gpfswrap_get_realfilename_path(char *pathname, char *filenamep, int *len)
-{
- if (gpfs_get_realfilename_path_fn == NULL) {
- errno = ENOSYS;
- return -1;
- }
-
- return gpfs_get_realfilename_path_fn(pathname, filenamep, len);
-}
-
-int gpfswrap_set_winattrs_path(char *pathname, int flags,
- struct gpfs_winattr *attrs)
-{
- if (gpfs_set_winattrs_path_fn == NULL) {
- errno = ENOSYS;
- return -1;
- }
-
- return gpfs_set_winattrs_path_fn(pathname, flags, attrs);
-}
-
-int gpfswrap_get_winattrs_path(char *pathname, struct gpfs_winattr *attrs)
-{
- if (gpfs_get_winattrs_path_fn == NULL) {
- errno = ENOSYS;
- return -1;
- }
-
- return gpfs_get_winattrs_path_fn(pathname, attrs);
-}
-
-int gpfswrap_get_winattrs(int fd, struct gpfs_winattr *attrs)
-{
- if (gpfs_get_winattrs_fn == NULL) {
- errno = ENOSYS;
- return -1;
- }
-
- return gpfs_get_winattrs_fn(fd, attrs);
-}
-
-int gpfswrap_prealloc(int fd, gpfs_off64_t start, gpfs_off64_t bytes)
-{
- if (gpfs_prealloc_fn == NULL) {
- errno = ENOSYS;
- return -1;
- }
-
- return gpfs_prealloc_fn(fd, start, bytes);
-}
-
-int gpfswrap_ftruncate(int fd, gpfs_off64_t length)
-{
- if (gpfs_ftruncate_fn == NULL) {
- errno = ENOSYS;
- return -1;
- }
-
- return gpfs_ftruncate_fn(fd, length);
-}
-
-int gpfswrap_lib_init(int flags)
-{
- if (gpfs_lib_init_fn == NULL) {
- errno = ENOSYS;
- return -1;
- }
-
- return gpfs_lib_init_fn(flags);
-}
-
-int gpfswrap_set_times_path(char *pathname, int flags,
- gpfs_timestruc_t times[4])
-{
- if (gpfs_set_times_path_fn == NULL) {
- errno = ENOSYS;
- return -1;
- }
-
- return gpfs_set_times_path_fn(pathname, flags, times);
-}
-
-int gpfswrap_quotactl(char *pathname, int cmd, int id, void *bufp)
-{
- if (gpfs_quotactl_fn == NULL) {
- errno = ENOSYS;
- return -1;
- }
-
- return gpfs_quotactl_fn(pathname, cmd, id, bufp);
-}
-
-int gpfswrap_fcntl(int fd, void *argp)
-{
- if (gpfs_fcntl_fn == NULL) {
- errno = ENOSYS;
- return -1;
- }
-
- return gpfs_fcntl_fn(fd, argp);
-}
-
-bool set_gpfs_sharemode(files_struct *fsp, uint32 access_mask,
- uint32 share_access)
-{
- unsigned int allow = GPFS_SHARE_NONE;
- unsigned int deny = GPFS_DENY_NONE;
- int result;
-
- if ((fsp == NULL) || (fsp->fh == NULL) || (fsp->fh->fd < 0)) {
- /* No real file, don't disturb */
- return True;
- }
-
- allow |= (access_mask & (FILE_WRITE_DATA|FILE_APPEND_DATA|
- DELETE_ACCESS)) ? GPFS_SHARE_WRITE : 0;
- allow |= (access_mask & (FILE_READ_DATA|FILE_EXECUTE)) ?
- GPFS_SHARE_READ : 0;
-
- if (allow == GPFS_SHARE_NONE) {
- DEBUG(10, ("special case am=no_access:%x\n",access_mask));
- }
- else {
- deny |= (share_access & FILE_SHARE_WRITE) ?
- 0 : GPFS_DENY_WRITE;
- deny |= (share_access & (FILE_SHARE_READ)) ?
- 0 : GPFS_DENY_READ;
- }
- DEBUG(10, ("am=%x, allow=%d, sa=%x, deny=%d\n",
- access_mask, allow, share_access, deny));
-
- result = gpfswrap_set_share(fsp->fh->fd, allow, deny);
- if (result != 0) {
- if (errno == ENOSYS) {
- DEBUG(5, ("VFS module vfs_gpfs loaded, but gpfs "
- "set_share function support not available. "
- "Allowing access\n"));
- return True;
- } else {
- DEBUG(10, ("gpfs_set_share failed: %s\n",
- strerror(errno)));
- }
- }
-
- return (result == 0);
-}
-
-int set_gpfs_lease(int fd, int leasetype)
-{
- int gpfs_type = GPFS_LEASE_NONE;
-
- if (leasetype == F_RDLCK) {
- gpfs_type = GPFS_LEASE_READ;
- }
- if (leasetype == F_WRLCK) {
- gpfs_type = GPFS_LEASE_WRITE;
- }
-
- /* we unconditionally set CAP_LEASE, rather than looking for
- -1/EACCES as there is a bug in some versions of
- libgpfs_gpl.so which results in a leaked fd on /dev/ss0
- each time we try this with the wrong capabilities set
- */
- linux_set_lease_capability();
- return gpfswrap_set_lease(fd, gpfs_type);
-}
-
-int get_gpfs_quota(const char *pathname, int type, int id,
- struct gpfs_quotaInfo *qi)
-{
- int ret;
-
- ZERO_STRUCTP(qi);
- ret = gpfswrap_quotactl(discard_const_p(char, pathname),
- GPFS_QCMD(Q_GETQUOTA, type), id, qi);
-
- if (ret) {
- if (errno == GPFS_E_NO_QUOTA_INST) {
- DEBUG(10, ("Quotas disabled on GPFS filesystem.\n"));
- } else if (errno != ENOSYS) {
- DEBUG(0, ("Get quota failed, type %d, id, %d, "
- "errno %d.\n", type, id, errno));
- }
-
- return ret;
- }
-
- DEBUG(10, ("quota type %d, id %d, blk u:%lld h:%lld s:%lld gt:%u\n",
- type, id, qi->blockUsage, qi->blockHardLimit,
- qi->blockSoftLimit, qi->blockGraceTime));
-
- return ret;
-}
-
-int get_gpfs_fset_id(const char *pathname, int *fset_id)
-{
- int err, fd, errno_fcntl;
-
- struct {
- gpfsFcntlHeader_t hdr;
- gpfsGetFilesetName_t fsn;
- } arg;
-
- if (!gpfs_getfilesetid_fn) {
- errno = ENOSYS;
- return -1;
- }
-
- arg.hdr.totalLength = sizeof(arg);
- arg.hdr.fcntlVersion = GPFS_FCNTL_CURRENT_VERSION;
- arg.hdr.fcntlReserved = 0;
- arg.fsn.structLen = sizeof(arg.fsn);
- arg.fsn.structType = GPFS_FCNTL_GET_FILESETNAME;
-
- fd = open(pathname, O_RDONLY);
- if (fd == -1) {
- DEBUG(1, ("Could not open %s: %s\n",
- pathname, strerror(errno)));
- return fd;
- }
-
- err = gpfswrap_fcntl(fd, &arg);
- errno_fcntl = errno;
- close(fd);
-
- if (err) {
- errno = errno_fcntl;
- if (errno != ENOSYS) {
- DEBUG(1, ("GPFS_FCNTL_GET_FILESETNAME for %s failed: "
- "%s\n", pathname, strerror(errno)));
- }
- return err;
- }
-
- err = gpfs_getfilesetid_fn(discard_const_p(char, pathname),
- arg.fsn.buffer, fset_id);
- if (err) {
- DEBUG(1, ("gpfs_getfilesetid for %s failed: %s\n",
- pathname, strerror(errno)));
- }
- return err;
-}
-
-static void timespec_to_gpfs_time(struct timespec ts, gpfs_timestruc_t *gt,
- int idx, int *flags)
-{
- if (!null_timespec(ts)) {
- *flags |= 1 << idx;
- gt[idx].tv_sec = ts.tv_sec;
- gt[idx].tv_nsec = ts.tv_nsec;
- DEBUG(10, ("Setting GPFS time %d, flags 0x%x\n", idx, *flags));
- }
-}
-
-int smbd_gpfs_set_times_path(char *path, struct smb_file_time *ft)
-{
- gpfs_timestruc_t gpfs_times[4];
- int flags = 0;
- int rc;
-
- ZERO_ARRAY(gpfs_times);
- timespec_to_gpfs_time(ft->atime, gpfs_times, 0, &flags);
- timespec_to_gpfs_time(ft->mtime, gpfs_times, 1, &flags);
- /* No good mapping from LastChangeTime to ctime, not storing */
- timespec_to_gpfs_time(ft->create_time, gpfs_times, 3, &flags);
-
- if (!flags) {
- DEBUG(10, ("nothing to do, return to avoid EINVAL\n"));
- return 0;
- }
-
- rc = gpfswrap_set_times_path(path, flags, gpfs_times);
-
- if (rc != 0 && errno != ENOSYS) {
- DEBUG(1,("gpfs_set_times() returned with error %s\n",
- strerror(errno)));
- }
-
- return rc;
-}
git.samba.org / samba.git / blobdiff