Npfcall*
diod_readlink(Npfid *fid)
{
Fid *f = fid->aux;
Npfcall *ret;
char target[PATH_MAX + 1];
int n;
if ((n = readlink (path_s (f->path), target, sizeof(target) - 1)) < 0) {
np_uerror (errno);
goto error_quiet;
}
target[n] = '\0';
if (!(ret = np_create_rreadlink(target))) {
np_uerror (ENOMEM);
goto error;
}
return ret;
error:
errn (np_rerror (), "diod_readlink %s@%s:%s",
fid->user->uname, np_conn_get_client_id (fid->conn),
path_s (f->path));
error_quiet:
return NULL;
}
int
xattr_close (Npfid *fid)
{
Fid *f = fid->aux;
int rc = 0;
if (f->xattr) {
if ((f->xattr->flags & XATTR_FLAGS_SET)) {
if (f->xattr->len > 0) {
if (lsetxattr (path_s (f->path), f->xattr->name, f->xattr->buf,
f->xattr->len, f->xattr->setflags) < 0) {
np_uerror (errno);
rc = -1;
}
} else if (f->xattr->len == 0) {
if (lremovexattr (path_s (f->path), f->xattr->name) < 0) {
np_uerror (errno);
rc = -1;
}
}
}
_xattr_destroy (&f->xattr);
}
return rc;
}
/* Tremove - remove a file or directory.
*/
Npfcall*
diod_remove (Npfid *fid)
{
Fid *f = fid->aux;
Npfcall *ret;
if ((f->flags & DIOD_FID_FLAGS_ROFS)) {
np_uerror (EROFS);
goto error_quiet;
}
if (remove (path_s (f->path)) < 0) {
np_uerror (errno);
goto error_quiet;
}
if (!(ret = np_create_rremove ())) {
np_uerror (ENOMEM);
goto error;
}
return ret;
error:
errn (np_rerror (), "diod_remove %s@%s:%s",
fid->user->uname, np_conn_get_client_id (fid->conn),
path_s (f->path));
error_quiet:
return NULL;
}
/* Tstatfs - read file system information.
*/
Npfcall*
diod_statfs (Npfid *fid)
{
Fid *f = fid->aux;
struct statfs sb;
Npfcall *ret;
u64 fsid;
u32 type = V9FS_MAGIC;
if (statfs (path_s (f->path), &sb) < 0) {
np_uerror (errno);
goto error;
}
fsid = (u64)sb.f_fsid.__val[0] | ((u64)sb.f_fsid.__val[1] << 32);
if (diod_conf_get_statfs_passthru ())
type = sb.f_type;
if (!(ret = np_create_rstatfs(type, sb.f_bsize, sb.f_blocks,
sb.f_bfree, sb.f_bavail, sb.f_files,
sb.f_ffree, fsid,
sb.f_namelen))) {
np_uerror (ENOMEM);
goto error;
}
return ret;
error:
errn (np_rerror (), "diod_statfs %s@%s:%s",
fid->user->uname, np_conn_get_client_id (fid->conn),
path_s (f->path));
return NULL;
}
Npfcall*
diod_lcreate(Npfid *fid, Npstr *name, u32 flags, u32 mode, u32 gid)
{
Npsrv *srv = fid->conn->srv;
Fid *f = fid->aux;
Npfcall *ret;
Path opath = NULL;
if ((f->flags & DIOD_FID_FLAGS_ROFS)) {
np_uerror (EROFS);
goto error_quiet;
}
flags = _remap_oflags (flags);
if (flags & O_DIRECT) {
np_uerror (EINVAL); /* O_DIRECT not allowed - see issue 110 */
goto error_quiet;
}
if (!(flags & O_CREAT)) /* can't happen? */
flags |= O_CREAT;
if (f->ioctx != NULL) {
msg ("diod_lcreate: fid is already open");
np_uerror (EINVAL);
goto error;
}
opath = f->path;
if (!(f->path = path_append (srv, opath, name))) {
np_uerror (ENOMEM);
goto error;
}
if (ioctx_open (fid, flags, mode) < 0) {
if (np_rerror () == ENOMEM)
goto error;
goto error_quiet;
}
if (!((ret = np_create_rlcreate (ioctx_qid (f->ioctx),
ioctx_iounit (f->ioctx))))) {
(void)ioctx_close (fid, 0);
(void)unlink (path_s (f->path));
np_uerror (ENOMEM);
goto error;
}
path_decref (srv, opath);
return ret;
error:
errn (np_rerror (), "diod_lcreate %s@%s:%s/%.*s",
fid->user->uname, np_conn_get_client_id (fid->conn),
opath ? path_s (opath) : path_s (f->path), name->len, name->str);
error_quiet:
if (opath) {
if (f->path)
path_decref (srv, f->path);
f->path = opath;
}
return NULL;
}
/* Tattach - attach a new user (fid->user) to aname.
* diod_auth.c::diod_checkauth first authenticates/authorizes user
*/
Npfcall*
diod_attach (Npfid *fid, Npfid *afid, Npstr *aname)
{
Npfcall* ret = NULL;
Fid *f = NULL;
Npqid qid;
struct stat sb;
int xflags;
if (aname->len == 0 || *aname->str != '/') {
np_uerror (EPERM);
goto error;
}
if (!(f = diod_fidalloc (fid, aname))) {
np_uerror (ENOMEM);
goto error;
}
if (diod_conf_opt_runasuid ()) {
if (fid->user->uid != diod_conf_get_runasuid ()) {
np_uerror (EPERM);
goto error;
}
}
if (!diod_match_exports (path_s (f->path), fid->conn, fid->user, &xflags))
goto error;
if ((xflags & XFLAGS_RO))
f->flags |= DIOD_FID_FLAGS_ROFS;
if ((xflags & XFLAGS_SHAREFD))
f->flags |= DIOD_FID_FLAGS_SHAREFD;
if (stat (path_s (f->path), &sb) < 0) { /* OK to follow symbolic links */
np_uerror (errno);
goto error;
}
/* N.B. removed S_ISDIR (sb.st_mode) || return ENOTDIR check.
* Allow a regular file or a blcok device to be exported.
*/
diod_ustat2qid (&sb, &qid);
if ((ret = np_create_rattach (&qid)) == NULL) {
np_uerror (ENOMEM);
goto error;
}
return ret;
error:
errn (np_rerror (), "diod_attach %s@%s:%.*s", fid->user->uname,
np_conn_get_client_id (fid->conn), aname->len, aname->str);
diod_fiddestroy (fid);
return NULL;
}
Npfcall*
diod_symlink(Npfid *fid, Npstr *name, Npstr *symtgt, u32 gid)
{
Npsrv *srv = fid->conn->srv;
Fid *f = fid->aux;
Npfcall *ret;
char *target = NULL;
Path npath = NULL;
Npqid qid;
struct stat sb;
if ((f->flags & DIOD_FID_FLAGS_ROFS)) {
np_uerror (EROFS);
goto error_quiet;
}
if (!(npath = path_append (srv, f->path, name))) {
np_uerror (ENOMEM);
goto error;
}
if (!(target = np_strdup (symtgt))) {
np_uerror (ENOMEM);
goto error;
}
if (symlink (target, path_s (npath)) < 0 || lstat (path_s (npath),
&sb) < 0) {
np_uerror (errno);
goto error_quiet;
}
diod_ustat2qid (&sb, &qid);
if (!((ret = np_create_rsymlink (&qid)))) {
(void)unlink (path_s (npath));
np_uerror (ENOMEM);
goto error;
}
path_decref (srv, npath);
free (target);
return ret;
error:
errn (np_rerror (), "diod_symlink %s@%s:%s/%.*s",
fid->user->uname, np_conn_get_client_id (fid->conn),
path_s (f->path), name->len, name->str);
error_quiet:
if (npath)
path_decref (srv, npath);
if (target)
free (target);
return NULL;
}
char *
diod_get_path (Npfid *fid)
{
Fid *f = fid->aux;
return f ? path_s (f->path) : NULL;
}
/* Twrite - write to a file.
*/
Npfcall*
diod_write (Npfid *fid, u64 offset, u32 count, u8 *data, Npreq *req)
{
Fid *f = fid->aux;
Npfcall *ret;
ssize_t n;
if (!f->ioctx) {
msg ("diod_write: fid is not open");
np_uerror (EBADF);
goto error;
}
if ((f->flags & DIOD_FID_FLAGS_ROFS)) {
np_uerror (EROFS);
goto error_quiet;
}
if ((n = ioctx_pwrite (f->ioctx, data, count, offset)) < 0) {
np_uerror (errno);
goto error_quiet;
}
if (!(ret = np_create_rwrite (n))) {
np_uerror (ENOMEM);
goto error;
}
return ret;
error:
errn (np_rerror (), "diod_write %s@%s:%s",
fid->user->uname, np_conn_get_client_id (fid->conn),
path_s (f->path));
error_quiet:
return NULL;
}
/* Tread - read from a file or directory.
*/
Npfcall*
diod_read (Npfid *fid, u64 offset, u32 count, Npreq *req)
{
Fid *f = fid->aux;
Npfcall *ret = NULL;
ssize_t n;
if (!f->ioctx) {
msg ("diod_read: fid is not open");
np_uerror (EBADF);
goto error;
}
if (!(ret = np_alloc_rread (count))) {
np_uerror (ENOMEM);
goto error;
}
n = ioctx_pread (f->ioctx, ret->u.rread.data, count, offset);
if (n < 0) {
np_uerror (errno);
goto error_quiet;
}
np_set_rread_count (ret, n);
return ret;
error:
errn (np_rerror (), "diod_read %s@%s:%s",
fid->user->uname, np_conn_get_client_id (fid->conn),
path_s (f->path));
error_quiet:
if (ret)
free (ret);
return NULL;
}
Npfcall*
diod_readdir(Npfid *fid, u64 offset, u32 count, Npreq *req)
{
int n;
Fid *f = fid->aux;
Npfcall *ret;
if (!f->ioctx) {
msg ("diod_readdir: fid is not open");
np_uerror (EBADF);
goto error;
}
if (!(ret = np_create_rreaddir (count))) {
np_uerror (ENOMEM);
goto error;
}
n = _read_dir_linux (f, ret->u.rreaddir.data, offset, count);
if (np_rerror ()) {
free (ret);
ret = NULL;
} else
np_finalize_rreaddir (ret, n);
return ret;
error:
errn (np_rerror (), "diod_readdir %s@%s:%s",
fid->user->uname, np_conn_get_client_id (fid->conn),
path_s (f->path));
return NULL;
}
Npfcall*
diod_fsync (Npfid *fid)
{
Fid *f = fid->aux;
Npfcall *ret;
if ((f->flags & DIOD_FID_FLAGS_ROFS)) {
np_uerror (EROFS);
goto error_quiet;
}
if (!f->ioctx) {
msg ("diod_fsync: fid is not open");
np_uerror (EBADF);
goto error;
}
if (ioctx_fsync (f->ioctx) < 0) {
np_uerror (errno);
goto error_quiet;
}
if (!((ret = np_create_rfsync ()))) {
np_uerror (ENOMEM);
goto error;
}
return ret;
error:
errn (np_rerror (), "diod_fsync %s@%s:%s",
fid->user->uname, np_conn_get_client_id (fid->conn),
path_s (f->path));
error_quiet:
return NULL;
}
Npfcall*
diod_getattr(Npfid *fid, u64 request_mask)
{
Fid *f = fid->aux;
Npfcall *ret;
Npqid qid;
struct stat sb;
if ((f->flags & DIOD_FID_FLAGS_MOUNTPT)) {
if (_statmnt (path_s (f->path), &sb) < 0) {
np_uerror (errno);
goto error_quiet;
}
} else {
if (lstat (path_s (f->path), &sb) < 0) {
np_uerror (errno);
goto error_quiet;
}
}
diod_ustat2qid (&sb, &qid);
if (!(ret = np_create_rgetattr(request_mask, &qid,
sb.st_mode,
sb.st_uid,
sb.st_gid,
sb.st_nlink,
sb.st_rdev,
sb.st_size,
sb.st_blksize,
sb.st_blocks,
sb.st_atim.tv_sec,
sb.st_atim.tv_nsec,
sb.st_mtim.tv_sec,
sb.st_mtim.tv_nsec,
sb.st_ctim.tv_sec,
sb.st_ctim.tv_nsec,
0, 0, 0, 0))) {
np_uerror (ENOMEM);
goto error;
}
return ret;
error:
errn (np_rerror (), "diod_getattr %s@%s:%s",
fid->user->uname, np_conn_get_client_id (fid->conn),
path_s (f->path));
error_quiet:
return NULL;
}
/* Twalk - walk a file path
* Called from fcall.c::np_walk () on each wname component in succession.
* On error, call np_uerror () and return 0.
*/
int
diod_walk (Npfid *fid, Npstr* wname, Npqid *wqid)
{
Npsrv *srv = fid->conn->srv;
Fid *f = fid->aux;
struct stat sb, sb2;
Path npath = NULL;
if ((f->flags & DIOD_FID_FLAGS_MOUNTPT)) {
np_uerror (ENOENT);
goto error_quiet;
}
if (!(npath = path_append (srv, f->path, wname))) {
np_uerror (ENOMEM);
goto error;
}
if (lstat (path_s (npath), &sb) < 0) {
np_uerror (errno);
goto error_quiet;
}
if (lstat (path_s (f->path), &sb2) < 0) {
np_uerror (errno);
goto error;
}
if (sb.st_dev != sb2.st_dev) {
if (_statmnt (path_s (npath), &sb) < 0)
goto error;
f->flags |= DIOD_FID_FLAGS_MOUNTPT;
}
path_decref (srv, f->path);
f->path = npath;
diod_ustat2qid (&sb, wqid);
return 1;
error:
errn (np_rerror (), "diod_walk %s@%s:%s/%.*s",
fid->user->uname, np_conn_get_client_id (fid->conn), path_s (f->path),
wname->len, wname->str);
error_quiet:
if (npath)
path_decref (srv, npath);
return 0;
}
/* Locking note:
* Implement POSIX locks in terms of BSD flock locks.
* This at least gets distributed whole-file locking to work.
* Strategies for distributed record locking will deadlock.
*/
Npfcall*
diod_lock (Npfid *fid, u8 type, u32 flags, u64 start, u64 length, u32 proc_id,
Npstr *client_id)
{
Fid *f = fid->aux;
Npfcall *ret;
u8 status = P9_LOCK_ERROR;
if ((f->flags & DIOD_FID_FLAGS_ROFS)) {
np_uerror (EROFS);
goto error_quiet;
}
if (flags & ~P9_LOCK_FLAGS_BLOCK) { /* only one valid flag for now */
np_uerror (EINVAL); /* (which we ignore) */
goto error;
}
if (!f->ioctx) {
msg ("diod_lock: fid is not open");
np_uerror (EBADF);
goto error;
}
switch (type) {
case P9_LOCK_TYPE_UNLCK:
if (ioctx_flock (f->ioctx, LOCK_UN) == 0)
status = P9_LOCK_SUCCESS;
break;
case P9_LOCK_TYPE_RDLCK:
if (ioctx_flock (f->ioctx, LOCK_SH | LOCK_NB) == 0)
status = P9_LOCK_SUCCESS;
else if (errno == EWOULDBLOCK)
status = P9_LOCK_BLOCKED;
break;
case P9_LOCK_TYPE_WRLCK:
if (ioctx_flock (f->ioctx, LOCK_EX | LOCK_NB) == 0)
status = P9_LOCK_SUCCESS;
else if (errno == EWOULDBLOCK)
status = P9_LOCK_BLOCKED;
break;
default:
np_uerror (EINVAL);
goto error;
}
if (!((ret = np_create_rlock (status)))) {
np_uerror (ENOMEM);
goto error;
}
return ret;
error:
errn (np_rerror (), "diod_lock %s@%s:%s",
fid->user->uname, np_conn_get_client_id (fid->conn),
path_s (f->path));
error_quiet:
return NULL;
}
Npfcall*
diod_mknod(Npfid *fid, Npstr *name, u32 mode, u32 major, u32 minor, u32 gid)
{
Npsrv *srv = fid->conn->srv;
Npfcall *ret;
Fid *f = fid->aux;
Path npath = NULL;
Npqid qid;
struct stat sb;
if ((f->flags & DIOD_FID_FLAGS_ROFS)) {
np_uerror (EROFS);
goto error_quiet;
}
if (!(npath = path_append (srv, f->path, name))) {
np_uerror (ENOMEM);
goto error;
}
if (mknod (path_s (npath), mode, makedev (major, minor)) < 0
|| lstat (path_s (npath), &sb) < 0) {
np_uerror (errno);
goto error_quiet;
}
diod_ustat2qid (&sb, &qid);
if (!((ret = np_create_rmknod (&qid)))) {
(void)unlink (path_s (npath));
np_uerror (ENOMEM);
goto error;
}
path_decref (srv, npath);
return ret;
error:
errn (np_rerror (), "diod_mknod %s@%s:%s/%.*s",
fid->user->uname, np_conn_get_client_id (fid->conn), path_s (f->path),
name->len, name->str);
error_quiet:
if (npath)
path_decref (srv, npath);
return NULL;
}
Npfcall*
diod_link (Npfid *dfid, Npfid *fid, Npstr *name)
{
Npsrv *srv = fid->conn->srv;
Fid *f = fid->aux;
Npfcall *ret;
Fid *df = dfid->aux;
Path npath = NULL;
if ((f->flags & DIOD_FID_FLAGS_ROFS)) {
np_uerror (EROFS);
goto error_quiet;
}
if (!(npath = path_append (srv, df->path, name))) {
np_uerror (ENOMEM);
goto error;
}
if (link (path_s (f->path), path_s (npath)) < 0) {
np_uerror (errno);
goto error_quiet;
}
if (!((ret = np_create_rlink ()))) {
(void)unlink (path_s (npath));
np_uerror (ENOMEM);
goto error;
}
path_decref (srv, npath);
return ret;
error:
errn (np_rerror (), "diod_link %s@%s:%s %s/%.*s",
fid->user->uname, np_conn_get_client_id (fid->conn), path_s (f->path),
path_s (df->path), name->len, name->str);
error_quiet:
if (npath)
path_decref (srv, npath);
return NULL;
}
int
xattr_open (Npfid *fid, Npstr *name, u64 *sizep)
{
Fid *f = fid->aux;
assert (f->xattr == NULL);
f->xattr = _xattr_create (name, 0, XATTR_FLAGS_GET, 0);
if (_lgetxattr (f->xattr, path_s (f->path)) < 0)
goto error;
*sizep = (u64)f->xattr->len;
return 0;
error:
_xattr_destroy (&f->xattr);
return -1;
}
/* Twalk - walk a file path
* Called from fcall.c::np_walk () to clone the fid.
* On error, call np_uerror () and return 0.
*/
int
diod_clone (Npfid *fid, Npfid *newfid)
{
Fid *f = fid->aux;
if (!(diod_fidclone (newfid, fid))) {
np_uerror (ENOMEM);
goto error;
}
return 1;
error:
errn (np_rerror (), "diod_clone %s@%s:%s",
fid->user->uname, np_conn_get_client_id (fid->conn),
path_s (f->path));
return 0;
}
Npfcall*
diod_lopen (Npfid *fid, u32 flags)
{
Fid *f = fid->aux;
Npfcall *res;
if ((f->flags & DIOD_FID_FLAGS_ROFS) && ((flags & O_WRONLY)
|| (flags & O_RDWR))) {
np_uerror (EROFS);
goto error_quiet;
}
flags = _remap_oflags (flags);
if (flags & O_DIRECT) {
np_uerror (EINVAL); /* O_DIRECT not allowed - see issue 110 */
goto error_quiet;
}
if ((flags & O_CREAT)) /* can't happen? */
flags &= ~O_CREAT; /* clear and allow to fail with ENOENT */
if (f->ioctx != NULL) {
msg ("diod_lopen: fid is already open");
np_uerror (EINVAL);
goto error;
}
if (ioctx_open (fid, flags, 0) < 0) {
if (np_rerror () == ENOMEM)
goto error;
goto error_quiet;
}
if (!(res = np_create_rlopen (ioctx_qid (f->ioctx),
ioctx_iounit (f->ioctx)))) {
(void)ioctx_close (fid, 0);
np_uerror (ENOMEM);
goto error;
}
return res;
error:
errn (np_rerror (), "diod_lopen %s@%s:%s",
fid->user->uname, np_conn_get_client_id (fid->conn),
path_s (f->path));
error_quiet:
return NULL;
}
Npfcall*
diod_getlock (Npfid *fid, u8 type, u64 start, u64 length, u32 proc_id,
Npstr *client_id)
{
Fid *f = fid->aux;
Npfcall *ret;
char *cid = NULL;
int ftype;
if ((f->flags & DIOD_FID_FLAGS_ROFS)) {
np_uerror (EROFS);
goto error_quiet;
}
if (!f->ioctx) {
msg ("diod_getlock: fid is not open");
np_uerror (EBADF);
goto error;
}
if (!(cid = np_strdup (client_id))) {
np_uerror (ENOMEM);
goto error;
}
if (type != P9_LOCK_TYPE_RDLCK && type != P9_LOCK_TYPE_WRLCK) {
np_uerror (EINVAL);
goto error;
}
ftype = (type == P9_LOCK_TYPE_RDLCK) ? LOCK_SH : LOCK_EX;
ftype = ioctx_testlock (f->ioctx, ftype);
type = (ftype == LOCK_EX) ? P9_LOCK_TYPE_WRLCK : P9_LOCK_TYPE_UNLCK;
if (!((ret = np_create_rgetlock(type, start, length, proc_id, cid)))) {
np_uerror (ENOMEM);
goto error;
}
free (cid);
return ret;
error:
errn (np_rerror (), "diod_getlock %s@%s:%s",
fid->user->uname, np_conn_get_client_id (fid->conn),
path_s (f->path));
error_quiet:
if (cid)
free (cid);
return NULL;
}
/* Tclunk - close a file.
*/
Npfcall*
diod_clunk (Npfid *fid)
{
Fid *f = fid->aux;
Npfcall *ret;
if (f->ioctx) {
if (ioctx_close (fid, 1) < 0)
goto error_quiet;
}
if (!(ret = np_create_rclunk ())) {
np_uerror (ENOMEM);
goto error;
}
return ret;
error:
errn (np_rerror (), "diod_clunk %s@%s:%s",
fid->user->uname, np_conn_get_client_id (fid->conn),
path_s (f->path));
error_quiet:
return NULL;
}
static u32
_copy_dirent_linux (Fid *f, struct dirent *dp, u8 *buf, u32 buflen)
{
Npqid qid;
u32 ret = 0;
if (dp->d_type == DT_UNKNOWN) {
char path[PATH_MAX + 1];
struct stat sb;
snprintf (path, sizeof(path), "%s/%s", path_s (f->path), dp->d_name);
if (lstat (path, &sb) < 0) {
np_uerror (errno);
goto done;
}
diod_ustat2qid (&sb, &qid);
} else {
_dirent2qid (dp, &qid);
}
ret = np_serialize_p9dirent(&qid, dp->d_off, dp->d_type,
dp->d_name, buf, buflen);
done:
return ret;
}
/* Trename - rename a file, potentially to another directory
*/
Npfcall*
diod_rename (Npfid *fid, Npfid *dfid, Npstr *name)
{
Npsrv *srv = fid->conn->srv;
Fid *f = fid->aux;
Fid *d = dfid->aux;
Npfcall *ret;
Path npath = NULL;
int renamed = 0;
if ((f->flags & DIOD_FID_FLAGS_ROFS)) {
np_uerror (EROFS);
goto error_quiet;
}
if (!(npath = path_append (srv, d->path, name))) {
np_uerror (ENOMEM);
goto error;
}
if (rename (path_s (f->path), path_s (npath)) < 0) {
np_uerror (errno);
goto error_quiet;
}
renamed = 1;
if (!(ret = np_create_rrename ())) {
np_uerror (ENOMEM);
goto error;
}
path_decref (srv, f->path);
f->path = npath;
return ret;
error:
errn (np_rerror (), "diod_rename %s@%s:%s to %s/%.*s",
fid->user->uname, np_conn_get_client_id (fid->conn), path_s (f->path),
path_s (d->path), name->len, name->str);
error_quiet:
if (renamed && npath)
(void)rename (path_s (npath), path_s (f->path));
if (npath)
path_decref (srv, npath);
return NULL;
}
Npfcall*
diod_setattr (Npfid *fid, u32 valid, u32 mode, u32 uid, u32 gid, u64 size,
u64 atime_sec, u64 atime_nsec, u64 mtime_sec, u64 mtime_nsec)
{
Npfcall *ret;
Fid *f = fid->aux;
int ctime_updated = 0;
if ((f->flags & DIOD_FID_FLAGS_ROFS)) {
np_uerror (EROFS);
goto error_quiet;
}
if ((valid & P9_ATTR_MODE)) { /* N.B. derefs symlinks */
if (chmod (path_s (f->path), mode) < 0) {
np_uerror(errno);
goto error_quiet;
}
ctime_updated = 1;
}
if ((valid & P9_ATTR_UID) || (valid & P9_ATTR_GID)) {
if (lchown (path_s (f->path), (valid & P9_ATTR_UID) ? uid : -1,
(valid & P9_ATTR_GID) ? gid : -1) < 0){
np_uerror(errno);
goto error_quiet;
}
ctime_updated = 1;
}
if ((valid & P9_ATTR_SIZE)) {
if (truncate (path_s (f->path), size) < 0) {
np_uerror(errno);
goto error_quiet;
}
ctime_updated = 1;
}
if ((valid & P9_ATTR_ATIME) || (valid & P9_ATTR_MTIME)) {
#if HAVE_UTIMENSAT
struct timespec ts[2];
if (!(valid & P9_ATTR_ATIME)) {
ts[0].tv_sec = 0;
ts[0].tv_nsec = UTIME_OMIT;
} else if (!(valid & P9_ATTR_ATIME_SET)) {
ts[0].tv_sec = 0;
ts[0].tv_nsec = UTIME_NOW;
} else {
ts[0].tv_sec = atime_sec;
ts[0].tv_nsec = atime_nsec;
}
if (!(valid & P9_ATTR_MTIME)) {
ts[1].tv_sec = 0;
ts[1].tv_nsec = UTIME_OMIT;
} else if (!(valid & P9_ATTR_MTIME_SET)) {
ts[1].tv_sec = 0;
ts[1].tv_nsec = UTIME_NOW;
} else {
ts[1].tv_sec = mtime_sec;
ts[1].tv_nsec = mtime_nsec;
}
if (utimensat(-1, path_s (f->path), ts, AT_SYMLINK_NOFOLLOW) < 0) {
np_uerror(errno);
goto error_quiet;
}
#else /* HAVE_UTIMENSAT */
struct timeval tv[2], now, *tvp;
struct stat sb;
if ((valid & P9_ATTR_ATIME) && !(valid & P9_ATTR_ATIME_SET)
&& (valid & P9_ATTR_MTIME) && !(valid & P9_ATTR_MTIME_SET)) {
tvp = NULL; /* set both to now */
} else {
if (lstat(path_s (f->path), &sb) < 0) {
np_uerror (errno);
goto error_quiet;
}
if (gettimeofday (&now, NULL) < 0) {
np_uerror (errno);
goto error_quiet;
}
if (!(valid & P9_ATTR_ATIME)) {
tv[0].tv_sec = sb.st_atim.tv_sec;
tv[0].tv_usec = sb.st_atim.tv_nsec / 1000;
} else if (!(valid & P9_ATTR_ATIME_SET)) {
tv[0].tv_sec = now.tv_sec;
tv[0].tv_usec = now.tv_usec;
} else {
tv[0].tv_sec = atime_sec;
tv[0].tv_usec = atime_nsec / 1000;
}
if (!(valid & P9_ATTR_MTIME)) {
tv[1].tv_sec = sb.st_mtim.tv_sec;
tv[1].tv_usec = sb.st_mtim.tv_nsec / 1000;
} else if (!(valid & P9_ATTR_MTIME_SET)) {
tv[1].tv_sec = now.tv_sec;
tv[1].tv_usec = now.tv_usec;
} else {
tv[1].tv_sec = mtime_sec;
tv[1].tv_usec = mtime_nsec / 1000;
}
tvp = tv;
}
if (utimes (path_s (f->path), tvp) < 0) {
np_uerror(errno);
goto error_quiet;
}
#endif /* HAVE_UTIMENSAT */
ctime_updated = 1;
}
if ((valid & P9_ATTR_CTIME) && !ctime_updated) {
if (lchown (path_s (f->path), -1, -1) < 0) {
np_uerror (errno);
goto error_quiet;
}
}
if (!(ret = np_create_rsetattr())) {
np_uerror (ENOMEM);
goto error;
}
return ret;
error:
errn (np_rerror (), "diod_setattr %s@%s:%s (valid=0x%x)",
fid->user->uname, np_conn_get_client_id (fid->conn), path_s (f->path),
valid);
error_quiet:
return NULL;
}
