diff options
Diffstat (limited to 'xlators/features/read-only/src/worm.c')
-rw-r--r-- | xlators/features/read-only/src/worm.c | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/xlators/features/read-only/src/worm.c b/xlators/features/read-only/src/worm.c new file mode 100644 index 00000000000..790bc3234dd --- /dev/null +++ b/xlators/features/read-only/src/worm.c @@ -0,0 +1,101 @@ +/* + Copyright (c) 2008-2011 Gluster, Inc. <http://www.gluster.com> + This file is part of GlusterFS. + + GlusterFS 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. + + GlusterFS 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/>. +*/ + +#ifndef _CONFIG_H +#define _CONFIG_H +#include "config.h" +#endif + +#include "xlator.h" +#include "defaults.h" +#include "read-only-common.h" + +static int32_t +worm_open_cbk (call_frame_t *frame, void *cookie, xlator_t *this, int32_t op_ret, + int32_t op_errno, fd_t *fd) +{ + STACK_UNWIND_STRICT (open, frame, op_ret, op_errno, fd); + return 0; +} + +int32_t +worm_open (call_frame_t *frame, xlator_t *this, loc_t *loc, int32_t flags, + fd_t *fd, int32_t wbflags) +{ + if ((((flags & O_ACCMODE) == O_WRONLY) || + ((flags & O_ACCMODE) == O_RDWR)) && + !(flags & O_APPEND)) { + STACK_UNWIND_STRICT (open, frame, -1, EROFS, NULL); + return 0; + } + + STACK_WIND (frame, worm_open_cbk, FIRST_CHILD(this), + FIRST_CHILD(this)->fops->open, loc, flags, fd, wbflags); + return 0; +} + +int32_t +init (xlator_t *this) +{ + if (!this->children || this->children->next) { + gf_log (this->name, GF_LOG_ERROR, + "translator not configured with exactly one child"); + return -1; + } + + if (!this->parents) { + gf_log (this->name, GF_LOG_WARNING, + "dangling volume. check volfile "); + } + + return 0; +} + + +void +fini (xlator_t *this) +{ + return; +} + +struct xlator_fops fops = { + + .open = worm_open, + + .unlink = ro_unlink, + .rmdir = ro_rmdir, + .rename = ro_rename, + .truncate = ro_truncate, + .removexattr = ro_removexattr, + .fsyncdir = ro_fsyncdir, + .xattrop = ro_xattrop, + .inodelk = ro_inodelk, + .finodelk = ro_finodelk, + .entrylk = ro_entrylk, + .fentrylk = ro_fentrylk, + .lk = ro_lk, +}; + +struct xlator_cbks cbks = { +}; + +struct volume_options options[] = { + { .key = {NULL} }, +}; + |