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-rw-r--r--xlators/encryption/crypt/src/crypt.c3906
1 files changed, 0 insertions, 3906 deletions
diff --git a/xlators/encryption/crypt/src/crypt.c b/xlators/encryption/crypt/src/crypt.c
deleted file mode 100644
index 02253642cc9..00000000000
--- a/xlators/encryption/crypt/src/crypt.c
+++ /dev/null
@@ -1,3906 +0,0 @@
-/*
- Copyright (c) 2008-2012 Red Hat, Inc. <http://www.redhat.com>
- This file is part of GlusterFS.
-
- This file is licensed to you under your choice of the GNU Lesser
- General Public License, version 3 or any later version (LGPLv3 or
- later), or the GNU General Public License, version 2 (GPLv2), in all
- cases as published by the Free Software Foundation.
-*/
-#include <ctype.h>
-#include <sys/uio.h>
-
-#include <glusterfs/glusterfs.h>
-#include <glusterfs/xlator.h>
-#include <glusterfs/logging.h>
-#include <glusterfs/defaults.h>
-
-#include "crypt-common.h"
-#include "crypt.h"
-
-static void
-init_inode_info_head(struct crypt_inode_info *info, fd_t *fd);
-static int32_t
-init_inode_info_tail(struct crypt_inode_info *info,
- struct master_cipher_info *master);
-static int32_t
-prepare_for_submit_hole(call_frame_t *frame, xlator_t *this, uint64_t from,
- off_t size);
-static int32_t
-load_file_size(call_frame_t *frame, void *cookie, xlator_t *this,
- int32_t op_ret, int32_t op_errno, dict_t *dict, dict_t *xdata);
-static void
-do_ordered_submit(call_frame_t *frame, xlator_t *this, atom_data_type dtype);
-static void
-do_parallel_submit(call_frame_t *frame, xlator_t *this, atom_data_type dtype);
-static void
-put_one_call_open(call_frame_t *frame);
-static void
-put_one_call_readv(call_frame_t *frame, xlator_t *this);
-static void
-put_one_call_writev(call_frame_t *frame, xlator_t *this);
-static void
-put_one_call_ftruncate(call_frame_t *frame, xlator_t *this);
-static void
-free_avec(struct iovec *avec, char **pool, int blocks_in_pool);
-static void
-free_avec_data(crypt_local_t *local);
-static void
-free_avec_hole(crypt_local_t *local);
-
-static crypt_local_t *
-crypt_alloc_local(call_frame_t *frame, xlator_t *this, glusterfs_fop_t fop)
-{
- crypt_local_t *local = NULL;
-
- local = GF_CALLOC(1, sizeof(crypt_local_t), gf_crypt_mt_local);
- if (!local) {
- gf_log(this->name, GF_LOG_ERROR, "out of memory");
- return NULL;
- }
- local->fop = fop;
- LOCK_INIT(&local->hole_lock);
- LOCK_INIT(&local->call_lock);
- LOCK_INIT(&local->rw_count_lock);
-
- frame->local = local;
- return local;
-}
-
-struct crypt_inode_info *
-get_crypt_inode_info(inode_t *inode, xlator_t *this)
-{
- int ret;
- uint64_t value = 0;
- struct crypt_inode_info *info;
-
- ret = inode_ctx_get(inode, this, &value);
- if (ret == -1) {
- gf_log(this->name, GF_LOG_WARNING, "Can not get inode info");
- return NULL;
- }
- info = (struct crypt_inode_info *)(long)value;
- if (info == NULL) {
- gf_log(this->name, GF_LOG_WARNING, "Can not obtain inode info");
- return NULL;
- }
- return info;
-}
-
-static struct crypt_inode_info *
-local_get_inode_info(crypt_local_t *local, xlator_t *this)
-{
- if (local->info)
- return local->info;
- local->info = get_crypt_inode_info(local->fd->inode, this);
- return local->info;
-}
-
-static struct crypt_inode_info *
-alloc_inode_info(crypt_local_t *local, loc_t *loc)
-{
- struct crypt_inode_info *info;
-
- info = GF_CALLOC(1, sizeof(struct crypt_inode_info), gf_crypt_mt_inode);
- if (!info) {
- local->op_ret = -1;
- local->op_errno = ENOMEM;
- gf_log("crypt", GF_LOG_WARNING, "Can not allocate inode info");
- return NULL;
- }
-#if DEBUG_CRYPT
- info->loc = GF_CALLOC(1, sizeof(loc_t), gf_crypt_mt_loc);
- if (!info->loc) {
- gf_log("crypt", GF_LOG_WARNING, "Can not allocate loc");
- GF_FREE(info);
- return NULL;
- }
- if (loc_copy(info->loc, loc)) {
- GF_FREE(info->loc);
- GF_FREE(info);
- return NULL;
- }
-#endif /* DEBUG_CRYPT */
-
- local->info = info;
- return info;
-}
-
-static void
-free_inode_info(struct crypt_inode_info *info)
-{
-#if DEBUG_CRYPT
- loc_wipe(info->loc);
- GF_FREE(info->loc);
-#endif
- memset(info, 0, sizeof(*info));
- GF_FREE(info);
-}
-
-int
-crypt_forget(xlator_t *this, inode_t *inode)
-{
- uint64_t ctx_addr = 0;
- if (!inode_ctx_del(inode, this, &ctx_addr))
- free_inode_info((struct crypt_inode_info *)(long)ctx_addr);
- return 0;
-}
-
-#if DEBUG_CRYPT
-static void
-check_read(call_frame_t *frame, xlator_t *this, int32_t read, struct iovec *vec,
- int32_t count, struct iatt *stbuf)
-{
- crypt_local_t *local = frame->local;
- struct object_cipher_info *object = get_object_cinfo(local->info);
- struct avec_config *conf = &local->data_conf;
- uint32_t resid = stbuf->ia_size & (object_alg_blksize(object) - 1);
-
- if (read <= 0)
- return;
- if (read != iov_length(vec, count))
- gf_log("crypt", GF_LOG_DEBUG,
- "op_ret differs from amount of read bytes");
-
- if (object_alg_should_pad(object) &&
- (read & (object_alg_blksize(object) - 1)))
- gf_log("crypt", GF_LOG_DEBUG,
- "bad amount of read bytes (!= 0 mod(cblock size))");
-
- if (conf->aligned_offset + read >
- stbuf->ia_size + (resid ? object_alg_blksize(object) - resid : 0))
- gf_log("crypt", GF_LOG_DEBUG, "bad amount of read bytes (too large))");
-}
-
-#define PT_BYTES_TO_DUMP (32)
-static void
-dump_plain_text(crypt_local_t *local, struct iovec *avec)
-{
- int32_t to_dump;
- char str[PT_BYTES_TO_DUMP + 1];
-
- if (!avec)
- return;
- to_dump = avec->iov_len;
- if (to_dump > PT_BYTES_TO_DUMP)
- to_dump = PT_BYTES_TO_DUMP;
- memcpy(str, avec->iov_base, to_dump);
- memset(str + to_dump, '0', 1);
- gf_log("crypt", GF_LOG_DEBUG, "Read file: %s", str);
-}
-
-static int32_t
-data_conf_invariant(struct avec_config *conf)
-{
- return conf->acount == !!has_head_block(conf) + !!has_tail_block(conf) +
- conf->nr_full_blocks;
-}
-
-static int32_t
-hole_conf_invariant(struct avec_config *conf)
-{
- return conf->blocks_in_pool == !!has_head_block(conf) +
- !!has_tail_block(conf) +
- !!has_full_blocks(conf);
-}
-
-static void
-crypt_check_conf(struct avec_config *conf)
-{
- int32_t ret = 0;
- const char *msg;
-
- switch (conf->type) {
- case DATA_ATOM:
- msg = "data";
- ret = data_conf_invariant(conf);
- break;
- case HOLE_ATOM:
- msg = "hole";
- ret = hole_conf_invariant(conf);
- break;
- default:
- msg = "unknown";
- }
- if (!ret)
- gf_log("crypt", GF_LOG_DEBUG, "bad %s conf", msg);
-}
-
-static void
-check_buf(call_frame_t *frame, xlator_t *this, struct iatt *buf)
-{
- crypt_local_t *local = frame->local;
- struct object_cipher_info *object = &local->info->cinfo;
- uint64_t local_file_size;
-
- switch (local->fop) {
- case GF_FOP_FTRUNCATE:
- return;
- case GF_FOP_WRITE:
- local_file_size = local->new_file_size;
- break;
- case GF_FOP_READ:
- if (parent_is_crypt_xlator(frame, this))
- return;
- local_file_size = local->cur_file_size;
- break;
- default:
- gf_log("crypt", GF_LOG_DEBUG, "bad file operation");
- return;
- }
- if (buf->ia_size != round_up(local_file_size, object_alg_blksize(object)))
- gf_log("crypt", GF_LOG_DEBUG,
- "bad ia_size in buf (%llu), should be %llu",
- (unsigned long long)buf->ia_size,
- (unsigned long long)round_up(local_file_size,
- object_alg_blksize(object)));
-}
-
-#else
-#define check_read(frame, this, op_ret, vec, count, stbuf) noop
-#define dump_plain_text(local, avec) noop
-#define crypt_check_conf(conf) noop
-#define check_buf(frame, this, buf) noop
-#endif /* DEBUG_CRYPT */
-
-/*
- * Pre-conditions:
- * @vec represents a ciphertext of expanded size and
- * aligned offset.
- *
- * Compound a temporal vector @avec with block-aligned
- * components, decrypt and fix it up to represent a chunk
- * of data corresponding to the original size and offset.
- * Pass the result to the next translator.
- */
-int32_t
-crypt_readv_cbk(call_frame_t *frame, void *cookie, xlator_t *this,
- int32_t op_ret, int32_t op_errno, struct iovec *vec,
- int32_t count, struct iatt *stbuf, struct iobref *iobref,
- dict_t *xdata)
-{
- crypt_local_t *local = frame->local;
- struct avec_config *conf = &local->data_conf;
- struct object_cipher_info *object = &local->info->cinfo;
-
- struct iovec *avec;
- uint32_t i;
- uint32_t to_vec;
- uint32_t to_user;
-
- check_buf(frame, this, stbuf);
- check_read(frame, this, op_ret, vec, count, stbuf);
-
- local->op_ret = op_ret;
- local->op_errno = op_errno;
- local->iobref = iobref_ref(iobref);
-
- local->buf = *stbuf;
- local->buf.ia_size = local->cur_file_size;
-
- if (op_ret <= 0 || count == 0 || vec[0].iov_len == 0)
- goto put_one_call;
-
- if (conf->orig_offset >= local->cur_file_size) {
- local->op_ret = 0;
- goto put_one_call;
- }
- /*
- * correct config params with real file size
- * and actual amount of bytes read
- */
- set_config_offsets(frame, this, conf->orig_offset, op_ret, DATA_ATOM, 0);
-
- if (conf->orig_offset + conf->orig_size > local->cur_file_size)
- conf->orig_size = local->cur_file_size - conf->orig_offset;
- /*
- * calculate amount of data to be returned
- * to user.
- */
- to_user = op_ret;
- if (conf->aligned_offset + to_user <= conf->orig_offset) {
- gf_log(this->name, GF_LOG_WARNING, "Incomplete read");
- local->op_ret = -1;
- local->op_errno = EIO;
- goto put_one_call;
- }
- to_user -= (conf->aligned_offset - conf->orig_offset);
-
- if (to_user > conf->orig_size)
- to_user = conf->orig_size;
- local->rw_count = to_user;
-
- op_errno = set_config_avec_data(this, local, conf, object, vec, count);
- if (op_errno) {
- local->op_ret = -1;
- local->op_errno = op_errno;
- goto put_one_call;
- }
- avec = conf->avec;
-#if DEBUG_CRYPT
- if (conf->off_in_tail != 0 &&
- conf->off_in_tail < object_alg_blksize(object) &&
- object_alg_should_pad(object))
- gf_log(this->name, GF_LOG_DEBUG, "Bad offset in tail %d",
- conf->off_in_tail);
- if (iov_length(vec, count) != 0 &&
- in_same_lblock(conf->orig_offset + iov_length(vec, count) - 1,
- local->cur_file_size - 1, object_alg_blkbits(object))) {
- gf_log(this->name, GF_LOG_DEBUG, "Compound last cblock");
- dump_cblock(this, (unsigned char *)(avec[conf->acount - 1].iov_base) +
- avec[conf->acount - 1].iov_len -
- object_alg_blksize(object));
- dump_cblock(this, (unsigned char *)(vec[count - 1].iov_base) +
- vec[count - 1].iov_len -
- object_alg_blksize(object));
- }
-#endif
- decrypt_aligned_iov(object, avec, conf->acount, conf->aligned_offset);
- /*
- * pass proper plain data to user
- */
- avec[0].iov_base += (conf->aligned_offset - conf->orig_offset);
- avec[0].iov_len -= (conf->aligned_offset - conf->orig_offset);
-
- to_vec = to_user;
- for (i = 0; i < conf->acount; i++) {
- if (avec[i].iov_len > to_vec)
- avec[i].iov_len = to_vec;
- to_vec -= avec[i].iov_len;
- }
-put_one_call:
- put_one_call_readv(frame, this);
- return 0;
-}
-
-static int32_t
-do_readv(call_frame_t *frame, void *cookie, xlator_t *this, int32_t op_ret,
- int32_t op_errno, dict_t *dict, dict_t *xdata)
-{
- data_t *data;
- crypt_local_t *local = frame->local;
-
- if (op_ret < 0)
- goto error;
- /*
- * extract regular file size
- */
- data = dict_get(dict, FSIZE_XATTR_PREFIX);
- if (!data) {
- gf_log("crypt", GF_LOG_WARNING, "Regular file size not found");
- op_errno = EIO;
- goto error;
- }
- local->cur_file_size = data_to_uint64(data);
-
- get_one_call(frame);
- STACK_WIND(frame, crypt_readv_cbk, FIRST_CHILD(this),
- FIRST_CHILD(this)->fops->readv, local->fd,
- /*
- * FIXME: read amount can be reduced
- */
- local->data_conf.expanded_size, local->data_conf.aligned_offset,
- local->flags, local->xdata);
- return 0;
-error:
- local->op_ret = -1;
- local->op_errno = op_errno;
-
- get_one_call(frame);
- put_one_call_readv(frame, this);
- return 0;
-}
-
-static int32_t
-crypt_readv_finodelk_cbk(call_frame_t *frame, void *cookie, xlator_t *this,
- int32_t op_ret, int32_t op_errno, dict_t *xdata)
-{
- crypt_local_t *local = frame->local;
-
- if (op_ret < 0)
- goto error;
- /*
- * An access has been granted,
- * retrieve file size
- */
- STACK_WIND(frame, do_readv, FIRST_CHILD(this),
- FIRST_CHILD(this)->fops->fgetxattr, local->fd,
- FSIZE_XATTR_PREFIX, NULL);
- return 0;
-error:
- fd_unref(local->fd);
- if (local->xdata)
- dict_unref(local->xdata);
- CRYPT_STACK_UNWIND(readv, frame, -1, op_errno, NULL, 0, NULL, NULL, NULL);
- return 0;
-}
-
-static int32_t
-readv_trivial_completion(call_frame_t *frame, void *cookie, xlator_t *this,
- int32_t op_ret, int32_t op_errno, struct iatt *buf,
- dict_t *xdata)
-{
- crypt_local_t *local = frame->local;
-
- local->op_ret = op_ret;
- local->op_errno = op_errno;
-
- if (op_ret < 0) {
- gf_log(this->name, GF_LOG_WARNING, "stat failed (%d)", op_errno);
- goto error;
- }
- local->buf = *buf;
- STACK_WIND(frame, load_file_size, FIRST_CHILD(this),
- FIRST_CHILD(this)->fops->getxattr, local->loc,
- FSIZE_XATTR_PREFIX, NULL);
- return 0;
-error:
- CRYPT_STACK_UNWIND(readv, frame, op_ret, op_errno, NULL, 0, NULL, NULL,
- NULL);
- return 0;
-}
-
-int32_t
-crypt_readv(call_frame_t *frame, xlator_t *this, fd_t *fd, size_t size,
- off_t offset, uint32_t flags, dict_t *xdata)
-{
- int32_t ret;
- crypt_local_t *local;
- struct crypt_inode_info *info;
- struct gf_flock lock = {
- 0,
- };
-
-#if DEBUG_CRYPT
- gf_log("crypt", GF_LOG_DEBUG, "reading %d bytes from offset %llu",
- (int)size, (long long)offset);
- if (parent_is_crypt_xlator(frame, this))
- gf_log("crypt", GF_LOG_DEBUG, "parent is crypt");
-#endif
- local = crypt_alloc_local(frame, this, GF_FOP_READ);
- if (!local) {
- ret = ENOMEM;
- goto error;
- }
- if (size == 0)
- goto trivial;
-
- local->fd = fd_ref(fd);
- local->flags = flags;
-
- info = local_get_inode_info(local, this);
- if (info == NULL) {
- ret = EINVAL;
- fd_unref(fd);
- goto error;
- }
- if (!object_alg_atomic(&info->cinfo)) {
- ret = EINVAL;
- fd_unref(fd);
- goto error;
- }
- set_config_offsets(frame, this, offset, size, DATA_ATOM, 0);
- if (parent_is_crypt_xlator(frame, this)) {
- data_t *data;
- /*
- * We are called by crypt_writev (or cypt_ftruncate)
- * to perform the "read" component of the read-modify-write
- * (or read-prune-write) sequence for some atom;
- *
- * don't ask for access:
- * it has already been acquired
- *
- * Retrieve current file size
- */
- if (!xdata) {
- gf_log("crypt", GF_LOG_WARNING,
- "Regular file size hasn't been passed");
- ret = EIO;
- goto error;
- }
- data = dict_get(xdata, FSIZE_XATTR_PREFIX);
- if (!data) {
- gf_log("crypt", GF_LOG_WARNING, "Regular file size not found");
- ret = EIO;
- goto error;
- }
- local->old_file_size = local->cur_file_size = data_to_uint64(data);
-
- get_one_call(frame);
- STACK_WIND(frame, crypt_readv_cbk, FIRST_CHILD(this),
- FIRST_CHILD(this)->fops->readv, local->fd,
- /*
- * FIXME: read amount can be reduced
- */
- local->data_conf.expanded_size,
- local->data_conf.aligned_offset, flags, NULL);
- return 0;
- }
- if (xdata)
- local->xdata = dict_ref(xdata);
-
- lock.l_len = 0;
- lock.l_start = 0;
- lock.l_type = F_RDLCK;
- lock.l_whence = SEEK_SET;
-
- STACK_WIND(frame, crypt_readv_finodelk_cbk, FIRST_CHILD(this),
- FIRST_CHILD(this)->fops->finodelk, this->name, fd, F_SETLKW,
- &lock, NULL);
- return 0;
-trivial:
- STACK_WIND(frame, readv_trivial_completion, FIRST_CHILD(this),
- FIRST_CHILD(this)->fops->fstat, fd, NULL);
- return 0;
-error:
- CRYPT_STACK_UNWIND(readv, frame, -1, ret, NULL, 0, NULL, NULL, NULL);
- return 0;
-}
-
-void
-set_local_io_params_writev(call_frame_t *frame,
- struct object_cipher_info *object,
- struct rmw_atom *atom, off_t io_offset,
- uint32_t io_size)
-{
- crypt_local_t *local = frame->local;
-
- local->io_offset = io_offset;
- local->io_size = io_size;
-
- local->io_offset_nopad = atom->offset_at(frame, object) +
- atom->offset_in(frame, object);
-
- gf_log("crypt", GF_LOG_DEBUG, "set nopad offset to %llu",
- (unsigned long long)local->io_offset_nopad);
-
- local->io_size_nopad = atom->io_size_nopad(frame, object);
-
- gf_log("crypt", GF_LOG_DEBUG, "set nopad size to %llu",
- (unsigned long long)local->io_size_nopad);
-
- local->update_disk_file_size = 0;
- /*
- * NOTE: eof_padding_size is 0 for all full atoms;
- * For head and tail atoms it will be set up at rmw_partial block()
- */
- local->new_file_size = local->cur_file_size;
-
- if (local->io_offset_nopad + local->io_size_nopad > local->cur_file_size) {
- local->new_file_size = local->io_offset_nopad + local->io_size_nopad;
-
- gf_log("crypt", GF_LOG_DEBUG, "set new file size to %llu",
- (unsigned long long)local->new_file_size);
-
- local->update_disk_file_size = 1;
- }
-}
-
-void
-set_local_io_params_ftruncate(call_frame_t *frame,
- struct object_cipher_info *object)
-{
- uint32_t resid;
- crypt_local_t *local = frame->local;
- struct avec_config *conf = &local->data_conf;
-
- resid = conf->orig_offset & (object_alg_blksize(object) - 1);
- if (resid) {
- local->eof_padding_size = object_alg_blksize(object) - resid;
- local->new_file_size = conf->aligned_offset;
- local->update_disk_file_size = 0;
- /*
- * file size will be updated
- * in the ->writev() stack,
- * when submitting file tail
- */
- } else {
- local->eof_padding_size = 0;
- local->new_file_size = conf->orig_offset;
- local->update_disk_file_size = 1;
- /*
- * file size will be updated
- * in this ->ftruncate stack
- */
- }
-}
-
-static void
-submit_head(call_frame_t *frame, xlator_t *this)
-{
- crypt_local_t *local = frame->local;
- submit_partial(frame, this, local->fd, HEAD_ATOM);
-}
-
-static void
-submit_tail(call_frame_t *frame, xlator_t *this)
-{
- crypt_local_t *local = frame->local;
- submit_partial(frame, this, local->fd, TAIL_ATOM);
-}
-
-static void
-submit_hole(call_frame_t *frame, xlator_t *this)
-{
- /*
- * hole conversion always means
- * appended write and goes in ordered fashion
- */
- do_ordered_submit(frame, this, HOLE_ATOM);
-}
-
-static void
-submit_data(call_frame_t *frame, xlator_t *this)
-{
- if (is_ordered_mode(frame)) {
- do_ordered_submit(frame, this, DATA_ATOM);
- return;
- }
- gf_log("crypt", GF_LOG_WARNING, "Bad submit mode");
- get_nr_calls(frame, nr_calls_data(frame));
- do_parallel_submit(frame, this, DATA_ATOM);
- return;
-}
-
-/*
- * heplers called by writev_cbk, fruncate_cbk in ordered mode
- */
-
-static int32_t
-should_submit_hole(crypt_local_t *local)
-{
- struct avec_config *conf = &local->hole_conf;
-
- return conf->avec != NULL;
-}
-
-static int32_t
-should_resume_submit_hole(crypt_local_t *local)
-{
- struct avec_config *conf = &local->hole_conf;
-
- if (local->fop == GF_FOP_WRITE && has_tail_block(conf))
- /*
- * Don't submit a part of hole, which
- * fits into a data block:
- * this part of hole will be converted
- * as a gap filled by zeros in data head
- * block.
- */
- return conf->cursor < conf->acount - 1;
- else
- return conf->cursor < conf->acount;
-}
-
-static int32_t
-should_resume_submit_data(call_frame_t *frame)
-{
- crypt_local_t *local = frame->local;
- struct avec_config *conf = &local->data_conf;
-
- if (is_ordered_mode(frame))
- return conf->cursor < conf->acount;
- /*
- * parallel writes
- */
- return 0;
-}
-
-static int32_t
-should_submit_data_after_hole(crypt_local_t *local)
-{
- return local->data_conf.avec != NULL;
-}
-
-static void
-update_local_file_params(call_frame_t *frame, xlator_t *this,
- struct iatt *prebuf, struct iatt *postbuf)
-{
- crypt_local_t *local = frame->local;
-
- check_buf(frame, this, postbuf);
-
- local->prebuf = *prebuf;
- local->postbuf = *postbuf;
-
- local->prebuf.ia_size = local->cur_file_size;
- local->postbuf.ia_size = local->new_file_size;
-
- local->cur_file_size = local->new_file_size;
-}
-
-static int32_t
-end_writeback_writev(call_frame_t *frame, void *cookie, xlator_t *this,
- int32_t op_ret, int32_t op_errno, struct iatt *prebuf,
- struct iatt *postbuf, dict_t *xdata)
-{
- crypt_local_t *local = frame->local;
-
- local->op_ret = op_ret;
- local->op_errno = op_errno;
-
- if (op_ret <= 0) {
- gf_log(this->name, GF_LOG_WARNING, "writev iteration failed");
- goto put_one_call;
- }
- /*
- * op_ret includes paddings (atom's head, atom's tail and EOF)
- */
- if (op_ret < local->io_size) {
- gf_log(this->name, GF_LOG_WARNING, "Incomplete writev iteration");
- goto put_one_call;
- }
- op_ret -= local->eof_padding_size;
- local->op_ret = op_ret;
-
- update_local_file_params(frame, this, prebuf, postbuf);
-
- if (data_write_in_progress(local)) {
- LOCK(&local->rw_count_lock);
- local->rw_count += op_ret;
- UNLOCK(&local->rw_count_lock);
-
- if (should_resume_submit_data(frame))
- submit_data(frame, this);
- } else {
- /*
- * hole conversion is going on;
- * don't take into account written zeros
- */
- if (should_resume_submit_hole(local))
- submit_hole(frame, this);
-
- else if (should_submit_data_after_hole(local))
- submit_data(frame, this);
- }
-put_one_call:
- put_one_call_writev(frame, this);
- return 0;
-}
-
-#define crypt_writev_cbk end_writeback_writev
-
-#define HOLE_WRITE_CHUNK_BITS 12
-#define HOLE_WRITE_CHUNK_SIZE (1 << HOLE_WRITE_CHUNK_BITS)
-
-/*
- * Convert hole of size @size at offset @off to
- * zeros and prepare respective iovecs for submit.
- * The hole lock should be held.
- *
- * Pre-conditions:
- * @local->file_size is set and valid.
- */
-int32_t
-prepare_for_submit_hole(call_frame_t *frame, xlator_t *this, uint64_t off,
- off_t size)
-{
- int32_t ret;
- crypt_local_t *local = frame->local;
- struct object_cipher_info *object = &local->info->cinfo;
-
- set_config_offsets(frame, this, off, size, HOLE_ATOM, 1);
-
- ret = set_config_avec_hole(this, local, &local->hole_conf, object,
- local->fop);
- crypt_check_conf(&local->hole_conf);
-
- return ret;
-}
-
-/*
- * prepare for submit @count bytes at offset @from
- */
-int32_t
-prepare_for_submit_data(call_frame_t *frame, xlator_t *this, off_t from,
- int32_t size, struct iovec *vec, int32_t vec_count,
- int32_t setup_gap)
-{
- uint32_t ret;
- crypt_local_t *local = frame->local;
- struct object_cipher_info *object = &local->info->cinfo;
-
- set_config_offsets(frame, this, from, size, DATA_ATOM, setup_gap);
-
- ret = set_config_avec_data(this, local, &local->data_conf, object, vec,
- vec_count);
- crypt_check_conf(&local->data_conf);
-
- return ret;
-}
-
-static void
-free_avec(struct iovec *avec, char **pool, int blocks_in_pool)
-{
- if (!avec)
- return;
- GF_FREE(pool);
- GF_FREE(avec);
-}
-
-static void
-free_avec_data(crypt_local_t *local)
-{
- return free_avec(local->data_conf.avec, local->data_conf.pool,
- local->data_conf.blocks_in_pool);
-}
-
-static void
-free_avec_hole(crypt_local_t *local)
-{
- return free_avec(local->hole_conf.avec, local->hole_conf.pool,
- local->hole_conf.blocks_in_pool);
-}
-
-static void
-do_parallel_submit(call_frame_t *frame, xlator_t *this, atom_data_type dtype)
-{
- crypt_local_t *local = frame->local;
- struct avec_config *conf;
-
- local->active_setup = dtype;
- conf = conf_by_type(frame, dtype);
-
- if (has_head_block(conf))
- submit_head(frame, this);
-
- if (has_full_blocks(conf))
- submit_full(frame, this);
-
- if (has_tail_block(conf))
- submit_tail(frame, this);
- return;
-}
-
-static void
-do_ordered_submit(call_frame_t *frame, xlator_t *this, atom_data_type dtype)
-{
- crypt_local_t *local = frame->local;
- struct avec_config *conf;
-
- local->active_setup = dtype;
- conf = conf_by_type(frame, dtype);
-
- if (should_submit_head_block(conf)) {
- get_one_call_nolock(frame);
- submit_head(frame, this);
- } else if (should_submit_full_block(conf)) {
- get_one_call_nolock(frame);
- submit_full(frame, this);
- } else if (should_submit_tail_block(conf)) {
- get_one_call_nolock(frame);
- submit_tail(frame, this);
- } else
- gf_log("crypt", GF_LOG_DEBUG,
- "nothing has been submitted in ordered mode");
- return;
-}
-
-static int32_t
-do_writev(call_frame_t *frame, void *cookie, xlator_t *this, int32_t op_ret,
- int32_t op_errno, dict_t *dict, dict_t *xdata)
-{
- data_t *data;
- crypt_local_t *local = frame->local;
- struct object_cipher_info *object = &local->info->cinfo;
- /*
- * extract regular file size
- */
- data = dict_get(dict, FSIZE_XATTR_PREFIX);
- if (!data) {
- gf_log("crypt", GF_LOG_WARNING, "Regular file size not found");
- op_ret = -1;
- op_errno = EIO;
- goto error;
- }
- local->old_file_size = local->cur_file_size = data_to_uint64(data);
-
- set_gap_at_end(frame, object, &local->data_conf, DATA_ATOM);
-
- if (local->cur_file_size < local->data_conf.orig_offset) {
- /*
- * Set up hole config
- */
- op_errno = prepare_for_submit_hole(
- frame, this, local->cur_file_size,
- local->data_conf.orig_offset - local->cur_file_size);
- if (op_errno) {
- local->op_ret = -1;
- local->op_errno = op_errno;
- goto error;
- }
- }
- if (should_submit_hole(local))
- submit_hole(frame, this);
- else
- submit_data(frame, this);
- return 0;
-error:
- get_one_call_nolock(frame);
- put_one_call_writev(frame, this);
- return 0;
-}
-
-static int32_t
-crypt_writev_finodelk_cbk(call_frame_t *frame, void *cookie, xlator_t *this,
- int32_t op_ret, int32_t op_errno, dict_t *xdata)
-{
- crypt_local_t *local = frame->local;
-
- local->op_ret = op_ret;
- local->op_errno = op_errno;
-
- if (op_ret < 0)
- goto error;
- /*
- * An access has been granted,
- * retrieve file size first
- */
- STACK_WIND(frame, do_writev, FIRST_CHILD(this),
- FIRST_CHILD(this)->fops->fgetxattr, local->fd,
- FSIZE_XATTR_PREFIX, NULL);
- return 0;
-error:
- get_one_call_nolock(frame);
- put_one_call_writev(frame, this);
- return 0;
-}
-
-static int32_t
-writev_trivial_completion(call_frame_t *frame, void *cookie, xlator_t *this,
- int32_t op_ret, int32_t op_errno, struct iatt *buf,
- dict_t *dict)
-{
- crypt_local_t *local = frame->local;
-
- local->op_ret = op_ret;
- local->op_errno = op_errno;
- local->prebuf = *buf;
- local->postbuf = *buf;
-
- local->prebuf.ia_size = local->cur_file_size;
- local->postbuf.ia_size = local->cur_file_size;
-
- get_one_call(frame);
- put_one_call_writev(frame, this);
- return 0;
-}
-
-int
-crypt_writev(call_frame_t *frame, xlator_t *this, fd_t *fd, struct iovec *vec,
- int32_t count, off_t offset, uint32_t flags, struct iobref *iobref,
- dict_t *xdata)
-{
- int32_t ret;
- crypt_local_t *local;
- struct crypt_inode_info *info;
- struct gf_flock lock = {
- 0,
- };
-#if DEBUG_CRYPT
- gf_log("crypt", GF_LOG_DEBUG, "writing %d bytes from offset %llu",
- (int)iov_length(vec, count), (long long)offset);
-#endif
- local = crypt_alloc_local(frame, this, GF_FOP_WRITE);
- if (!local) {
- ret = ENOMEM;
- goto error;
- }
- local->fd = fd_ref(fd);
-
- if (iobref)
- local->iobref = iobref_ref(iobref);
- /*
- * to update real file size on the server
- */
- local->xattr = dict_new();
- if (!local->xattr) {
- ret = ENOMEM;
- goto error;
- }
- local->flags = flags;
-
- info = local_get_inode_info(local, this);
- if (info == NULL) {
- ret = EINVAL;
- goto error;
- }
- if (!object_alg_atomic(&info->cinfo)) {
- ret = EINVAL;
- goto error;
- }
- if (iov_length(vec, count) == 0)
- goto trivial;
-
- ret = prepare_for_submit_data(frame, this, offset,
- iov_length(vec, count),
- vec, count, 0 /* don't setup gup
- in tail: we don't
- know file size yet */);
- if (ret) {
- ret = ENOMEM;
- goto error;
- }
-
- if (parent_is_crypt_xlator(frame, this)) {
- data_t *data;
- /*
- * we are called by shinking crypt_ftruncate(),
- * which doesn't perform hole conversion;
- *
- * don't ask for access:
- * it has already been acquired
- */
-
- /*
- * extract file size
- */
- if (!xdata) {
- gf_log("crypt", GF_LOG_WARNING,
- "Regular file size hasn't been passed");
- ret = EIO;
- goto error;
- }
- data = dict_get(xdata, FSIZE_XATTR_PREFIX);
- if (!data) {
- gf_log("crypt", GF_LOG_WARNING, "Regular file size not found");
- ret = EIO;
- goto error;
- }
- local->old_file_size = local->cur_file_size = data_to_uint64(data);
-
- submit_data(frame, this);
- return 0;
- }
- if (xdata)
- local->xdata = dict_ref(xdata);
- /*
- * lock the file and retrieve its size
- */
- lock.l_len = 0;
- lock.l_start = 0;
- lock.l_type = F_WRLCK;
- lock.l_whence = SEEK_SET;
-
- STACK_WIND(frame, crypt_writev_finodelk_cbk, FIRST_CHILD(this),
- FIRST_CHILD(this)->fops->finodelk, this->name, fd, F_SETLKW,
- &lock, NULL);
- return 0;
-trivial:
- STACK_WIND(frame, writev_trivial_completion, FIRST_CHILD(this),
- FIRST_CHILD(this)->fops->fstat, fd, NULL);
- return 0;
-error:
- if (local && local->fd)
- fd_unref(fd);
- if (local && local->iobref)
- iobref_unref(iobref);
- if (local && local->xdata)
- dict_unref(xdata);
- if (local && local->xattr)
- dict_unref(local->xattr);
- if (local && local->info)
- free_inode_info(local->info);
-
- CRYPT_STACK_UNWIND(writev, frame, -1, ret, NULL, NULL, NULL);
- return 0;
-}
-
-int32_t
-prepare_for_prune(call_frame_t *frame, xlator_t *this, uint64_t offset)
-{
- set_config_offsets(frame, this,
- offset,
- 0, /* count */
- DATA_ATOM,
- 0 /* since we prune, there is no
- gap in tail to uptodate */);
- return 0;
-}
-
-/*
- * Finish the read-prune-modify sequence
- *
- * Can be invoked as
- * 1) ->ftruncate_cbk() for cblock-aligned, or trivial prune
- * 2) ->writev_cbk() for non-cblock-aligned prune
- */
-
-static int32_t
-prune_complete(call_frame_t *frame, void *cookie, xlator_t *this,
- int32_t op_ret, int32_t op_errno, struct iatt *prebuf,
- struct iatt *postbuf, dict_t *xdata)
-{
- crypt_local_t *local = frame->local;
-
- local->op_ret = op_ret;
- local->op_errno = op_errno;
-
- update_local_file_params(frame, this, prebuf, postbuf);
-
- put_one_call_ftruncate(frame, this);
- return 0;
-}
-
-/*
- * This is called as ->ftruncate_cbk()
- *
- * Perform the "write" component of the
- * read-prune-write sequence.
- *
- * submuit the rest of the file
- */
-static int32_t
-prune_submit_file_tail(call_frame_t *frame, void *cookie, xlator_t *this,
- int32_t op_ret, int32_t op_errno, struct iatt *prebuf,
- struct iatt *postbuf, dict_t *xdata)
-{
- crypt_local_t *local = frame->local;
- struct avec_config *conf = &local->data_conf;
- dict_t *dict;
-
- if (op_ret < 0)
- goto put_one_call;
-
- if (local->xdata) {
- dict_unref(local->xdata);
- local->xdata = NULL;
- }
- if (xdata)
- local->xdata = dict_ref(xdata);
-
- dict = dict_new();
- if (!dict) {
- op_errno = ENOMEM;
- goto error;
- }
-
- update_local_file_params(frame, this, prebuf, postbuf);
- local->new_file_size = conf->orig_offset;
-
- /*
- * The rest of the file is a partial block and, hence,
- * should be written via RMW sequence, so the crypt xlator
- * does STACK_WIND to itself.
- *
- * Pass current file size to crypt_writev()
- */
- op_errno = dict_set(dict, FSIZE_XATTR_PREFIX,
- data_from_uint64(local->cur_file_size));
- if (op_errno) {
- gf_log("crypt", GF_LOG_WARNING, "can not set key to update file size");
- dict_unref(dict);
- goto error;
- }
- gf_log("crypt", GF_LOG_DEBUG,
- "passing current file size (%llu) to crypt_writev",
- (unsigned long long)local->cur_file_size);
- /*
- * Padding will be filled with
- * zeros by rmw_partial_block()
- */
- STACK_WIND(frame, prune_complete, this,
- this->fops->writev, /* crypt_writev */
- local->fd, &local->vec, 1,
- conf->aligned_offset, /* offset to write from */
- 0, local->iobref, dict);
-
- dict_unref(dict);
- return 0;
-error:
- local->op_ret = -1;
- local->op_errno = op_errno;
-put_one_call:
- put_one_call_ftruncate(frame, this);
- return 0;
-}
-
-/*
- * This is called as a callback of ->writev() invoked in behalf
- * of ftruncate(): it can be
- * 1) ordered writes issued by hole conversion in the case of
- * expanded truncate, or
- * 2) an rmw partial data block issued by non-cblock-aligned
- * prune.
- */
-int32_t
-end_writeback_ftruncate(call_frame_t *frame, void *cookie, xlator_t *this,
- int32_t op_ret, int32_t op_errno, struct iatt *prebuf,
- struct iatt *postbuf, dict_t *xdata)
-{
- crypt_local_t *local = frame->local;
- /*
- * if nothing has been written,
- * then it must be an error
- */
- local->op_ret = op_ret;
- local->op_errno = op_errno;
-
- if (op_ret < 0)
- goto put_one_call;
-
- update_local_file_params(frame, this, prebuf, postbuf);
-
- if (data_write_in_progress(local))
- /* case (2) */
- goto put_one_call;
- /* case (1) */
- if (should_resume_submit_hole(local))
- submit_hole(frame, this);
- /*
- * case of hole, when we shouldn't resume
- */
-put_one_call:
- put_one_call_ftruncate(frame, this);
- return 0;
-}
-
-/*
- * Perform prune and write components of the
- * read-prune-write sequence.
- *
- * Called as ->readv_cbk()
- *
- * Pre-conditions:
- * @vec contains the latest atom of the file
- * (plain text)
- */
-static int32_t
-prune_write(call_frame_t *frame, void *cookie, xlator_t *this, int32_t op_ret,
- int32_t op_errno, struct iovec *vec, int32_t count,
- struct iatt *stbuf, struct iobref *iobref, dict_t *xdata)
-{
- int32_t i;
- size_t to_copy;
- size_t copied = 0;
- crypt_local_t *local = frame->local;
- struct avec_config *conf = &local->data_conf;
-
- local->op_ret = op_ret;
- local->op_errno = op_errno;
- if (op_ret == -1)
- goto put_one_call;
-
- /*
- * At first, uptodate head block
- */
- if (iov_length(vec, count) < conf->off_in_head) {
- gf_log(this->name, GF_LOG_WARNING,
- "Failed to uptodate head block for prune");
- local->op_ret = -1;
- local->op_errno = EIO;
- goto put_one_call;
- }
- local->vec.iov_len = conf->off_in_head;
- local->vec.iov_base = GF_CALLOC(1, local->vec.iov_len, gf_crypt_mt_data);
-
- if (local->vec.iov_base == NULL) {
- gf_log(this->name, GF_LOG_WARNING,
- "Failed to calloc head block for prune");
- local->op_ret = -1;
- local->op_errno = ENOMEM;
- goto put_one_call;
- }
- for (i = 0; i < count; i++) {
- to_copy = vec[i].iov_len;
- if (to_copy > local->vec.iov_len - copied)
- to_copy = local->vec.iov_len - copied;
-
- memcpy((char *)local->vec.iov_base + copied, vec[i].iov_base, to_copy);
- copied += to_copy;
- if (copied == local->vec.iov_len)
- break;
- }
- /*
- * perform prune with aligned offset
- * (i.e. at this step we prune a bit
- * more then it is needed
- */
- STACK_WIND(frame, prune_submit_file_tail, FIRST_CHILD(this),
- FIRST_CHILD(this)->fops->ftruncate, local->fd,
- conf->aligned_offset, local->xdata);
- return 0;
-put_one_call:
- put_one_call_ftruncate(frame, this);
- return 0;
-}
-
-/*
- * Perform a read-prune-write sequence
- */
-int32_t
-read_prune_write(call_frame_t *frame, xlator_t *this)
-{
- int32_t ret = 0;
- dict_t *dict = NULL;
- crypt_local_t *local = frame->local;
- struct avec_config *conf = &local->data_conf;
- struct object_cipher_info *object = &local->info->cinfo;
-
- set_local_io_params_ftruncate(frame, object);
- get_one_call_nolock(frame);
-
- if ((conf->orig_offset & (object_alg_blksize(object) - 1)) == 0) {
- /*
- * cblock-aligned prune:
- * we don't need read and write components,
- * just cut file body
- */
- gf_log("crypt", GF_LOG_DEBUG, "prune without RMW (at offset %llu",
- (unsigned long long)conf->orig_offset);
-
- STACK_WIND(frame, prune_complete, FIRST_CHILD(this),
- FIRST_CHILD(this)->fops->ftruncate, local->fd,
- conf->orig_offset, local->xdata);
- return 0;
- }
- gf_log("crypt", GF_LOG_DEBUG, "prune with RMW (at offset %llu",
- (unsigned long long)conf->orig_offset);
- /*
- * We are about to perform the "read" component of the
- * read-prune-write sequence. It means that we need to
- * read encrypted data from disk and decrypt it.
- * So, the crypt translator does STACK_WIND to itself.
- *
- * Pass current file size to crypt_readv()
-
- */
- dict = dict_new();
- if (!dict) {
- gf_log("crypt", GF_LOG_WARNING, "Can not alloc dict");
- ret = ENOMEM;
- goto exit;
- }
- ret = dict_set(dict, FSIZE_XATTR_PREFIX,
- data_from_uint64(local->cur_file_size));
- if (ret) {
- gf_log("crypt", GF_LOG_WARNING, "Can not set dict");
- goto exit;
- }
- STACK_WIND(frame, prune_write, this, this->fops->readv, /* crypt_readv */
- local->fd, get_atom_size(object), /* bytes to read */
- conf->aligned_offset, /* offset to read from */
- 0, dict);
-exit:
- if (dict)
- dict_unref(dict);
- return ret;
-}
-
-/*
- * File prune is more complicated than expand.
- * First we need to read the latest atom to not lose info
- * needed for proper update. Also we need to make sure that
- * every component of read-prune-write sequence leaves data
- * consistent
- *
- * Non-cblock aligned prune is performed as read-prune-write
- * sequence:
- *
- * 1) read the latest atom;
- * 2) perform cblock-aligned prune
- * 3) issue a write request for the end-of-file
- */
-int32_t
-prune_file(call_frame_t *frame, xlator_t *this, uint64_t offset)
-{
- int32_t ret;
-
- ret = prepare_for_prune(frame, this, offset);
- if (ret)
- return ret;
- return read_prune_write(frame, this);
-}
-
-int32_t
-expand_file(call_frame_t *frame, xlator_t *this, uint64_t offset)
-{
- int32_t ret;
- crypt_local_t *local = frame->local;
-
- ret = prepare_for_submit_hole(frame, this, local->old_file_size,
- offset - local->old_file_size);
- if (ret)
- return ret;
- submit_hole(frame, this);
- return 0;
-}
-
-static int32_t
-ftruncate_trivial_completion(call_frame_t *frame, void *cookie, xlator_t *this,
- int32_t op_ret, int32_t op_errno, struct iatt *buf,
- dict_t *dict)
-{
- crypt_local_t *local = frame->local;
-
- local->op_ret = op_ret;
- local->op_errno = op_errno;
- local->prebuf = *buf;
- local->postbuf = *buf;
-
- local->prebuf.ia_size = local->cur_file_size;
- local->postbuf.ia_size = local->cur_file_size;
-
- get_one_call(frame);
- put_one_call_ftruncate(frame, this);
- return 0;
-}
-
-static int32_t
-do_ftruncate(call_frame_t *frame, void *cookie, xlator_t *this, int32_t op_ret,
- int32_t op_errno, dict_t *dict, dict_t *xdata)
-{
- data_t *data;
- crypt_local_t *local = frame->local;
-
- if (op_ret)
- goto error;
- /*
- * extract regular file size
- */
- data = dict_get(dict, FSIZE_XATTR_PREFIX);
- if (!data) {
- gf_log("crypt", GF_LOG_WARNING, "Regular file size not found");
- op_errno = EIO;
- goto error;
- }
- local->old_file_size = local->cur_file_size = data_to_uint64(data);
-
- if (local->data_conf.orig_offset == local->cur_file_size) {
-#if DEBUG_CRYPT
- gf_log("crypt", GF_LOG_DEBUG,
- "trivial ftruncate (current file size %llu)",
- (unsigned long long)local->cur_file_size);
-#endif
- goto trivial;
- } else if (local->data_conf.orig_offset < local->cur_file_size) {
-#if DEBUG_CRYPT
- gf_log("crypt", GF_LOG_DEBUG, "prune from %llu to %llu",
- (unsigned long long)local->cur_file_size,
- (unsigned long long)local->data_conf.orig_offset);
-#endif
- op_errno = prune_file(frame, this, local->data_conf.orig_offset);
- } else {
-#if DEBUG_CRYPT
- gf_log("crypt", GF_LOG_DEBUG, "expand from %llu to %llu",
- (unsigned long long)local->cur_file_size,
- (unsigned long long)local->data_conf.orig_offset);
-#endif
- op_errno = expand_file(frame, this, local->data_conf.orig_offset);
- }
- if (op_errno)
- goto error;
- return 0;
-trivial:
- STACK_WIND(frame, ftruncate_trivial_completion, FIRST_CHILD(this),
- FIRST_CHILD(this)->fops->fstat, local->fd, NULL);
- return 0;
-error:
- /*
- * finish with ftruncate
- */
- local->op_ret = -1;
- local->op_errno = op_errno;
-
- get_one_call_nolock(frame);
- put_one_call_ftruncate(frame, this);
- return 0;
-}
-
-static int32_t
-crypt_ftruncate_finodelk_cbk(call_frame_t *frame, void *cookie, xlator_t *this,
- int32_t op_ret, int32_t op_errno, dict_t *xdata)
-{
- crypt_local_t *local = frame->local;
-
- local->op_ret = op_ret;
- local->op_errno = op_errno;
-
- if (op_ret < 0)
- goto error;
- /*
- * An access has been granted,
- * retrieve file size first
- */
- STACK_WIND(frame, do_ftruncate, FIRST_CHILD(this),
- FIRST_CHILD(this)->fops->fgetxattr, local->fd,
- FSIZE_XATTR_PREFIX, NULL);
- return 0;
-error:
- get_one_call_nolock(frame);
- put_one_call_ftruncate(frame, this);
- return 0;
-}
-
-/*
- * ftruncate is performed in 2 steps:
- * . receive file size;
- * . expand or prune file.
- */
-static int32_t
-crypt_ftruncate(call_frame_t *frame, xlator_t *this, fd_t *fd, off_t offset,
- dict_t *xdata)
-{
- int32_t ret;
- crypt_local_t *local;
- struct crypt_inode_info *info;
- struct gf_flock lock = {
- 0,
- };
-
- local = crypt_alloc_local(frame, this, GF_FOP_FTRUNCATE);
- if (!local) {
- ret = ENOMEM;
- goto error;
- }
- local->xattr = dict_new();
- if (!local->xattr) {
- ret = ENOMEM;
- goto error;
- }
- local->fd = fd_ref(fd);
- info = local_get_inode_info(local, this);
- if (info == NULL) {
- ret = EINVAL;
- goto error;
- }
- if (!object_alg_atomic(&info->cinfo)) {
- ret = EINVAL;
- goto error;
- }
- local->data_conf.orig_offset = offset;
- if (xdata)
- local->xdata = dict_ref(xdata);
-
- lock.l_len = 0;
- lock.l_start = 0;
- lock.l_type = F_WRLCK;
- lock.l_whence = SEEK_SET;
-
- STACK_WIND(frame, crypt_ftruncate_finodelk_cbk, FIRST_CHILD(this),
- FIRST_CHILD(this)->fops->finodelk, this->name, fd, F_SETLKW,
- &lock, NULL);
- return 0;
-error:
- if (local && local->fd)
- fd_unref(fd);
- if (local && local->xdata)
- dict_unref(xdata);
- if (local && local->xattr)
- dict_unref(local->xattr);
- if (local && local->info)
- free_inode_info(local->info);
-
- CRYPT_STACK_UNWIND(ftruncate, frame, -1, ret, NULL, NULL, NULL);
- return 0;
-}
-
-/* ->flush_cbk() */
-int32_t
-truncate_end(call_frame_t *frame, void *cookie, xlator_t *this, int32_t op_ret,
- int32_t op_errno, dict_t *xdata)
-{
- crypt_local_t *local = frame->local;
-
- CRYPT_STACK_UNWIND(truncate, frame, op_ret, op_errno, &local->prebuf,
- &local->postbuf, local->xdata);
- return 0;
-}
-
-/* ftruncate_cbk() */
-int32_t
-truncate_flush(call_frame_t *frame, void *cookie, xlator_t *this,
- int32_t op_ret, int32_t op_errno, struct iatt *prebuf,
- struct iatt *postbuf, dict_t *xdata)
-{
- crypt_local_t *local = frame->local;
- fd_t *fd = local->fd;
- local->prebuf = *prebuf;
- local->postbuf = *postbuf;
-
- STACK_WIND(frame, truncate_end, FIRST_CHILD(this),
- FIRST_CHILD(this)->fops->flush, fd, NULL);
- fd_unref(fd);
- return 0;
-}
-
-/*
- * is called as ->open_cbk()
- */
-static int32_t
-truncate_begin(call_frame_t *frame, void *cookie, xlator_t *this,
- int32_t op_ret, int32_t op_errno, fd_t *fd, dict_t *xdata)
-{
- crypt_local_t *local = frame->local;
-
- if (op_ret < 0) {
- fd_unref(fd);
- CRYPT_STACK_UNWIND(truncate, frame, op_ret, op_errno, NULL, NULL, NULL);
- return 0;
- } else {
- fd_bind(fd);
- }
- /*
- * crypt_truncate() is implemented via crypt_ftruncate(),
- * so the crypt xlator does STACK_WIND to itself here
- */
- STACK_WIND(frame, truncate_flush, this,
- this->fops->ftruncate, /* crypt_ftruncate */
- fd, local->offset, NULL);
- return 0;
-}
-
-/*
- * crypt_truncate() is implemented via crypt_ftruncate() as a
- * sequence crypt_open() - crypt_ftruncate() - truncate_flush()
- */
-int32_t
-crypt_truncate(call_frame_t *frame, xlator_t *this, loc_t *loc, off_t offset,
- dict_t *xdata)
-{
- fd_t *fd;
- crypt_local_t *local;
-
-#if DEBUG_CRYPT
- gf_log(this->name, GF_LOG_DEBUG, "truncate file %s at offset %llu",
- loc->path, (unsigned long long)offset);
-#endif
- local = crypt_alloc_local(frame, this, GF_FOP_TRUNCATE);
- if (!local)
- goto error;
-
- fd = fd_create(loc->inode, frame->root->pid);
- if (!fd) {
- gf_log(this->name, GF_LOG_ERROR, "Can not create fd");
- goto error;
- }
- local->fd = fd;
- local->offset = offset;
- local->xdata = xdata;
- STACK_WIND(frame, truncate_begin, this, this->fops->open, /* crypt_open() */
- loc, O_RDWR, fd, NULL);
- return 0;
-error:
- CRYPT_STACK_UNWIND(truncate, frame, -1, EINVAL, NULL, NULL, NULL);
- return 0;
-}
-
-end_writeback_handler_t
-dispatch_end_writeback(glusterfs_fop_t fop)
-{
- switch (fop) {
- case GF_FOP_WRITE:
- return end_writeback_writev;
- case GF_FOP_FTRUNCATE:
- return end_writeback_ftruncate;
- default:
- gf_log("crypt", GF_LOG_WARNING, "Bad wb operation %d", fop);
- return NULL;
- }
-}
-
-/*
- * true, if the caller needs metadata string
- */
-static int32_t
-is_custom_mtd(dict_t *xdata)
-{
- data_t *data;
- uint32_t flags;
-
- if (!xdata)
- return 0;
-
- data = dict_get(xdata, MSGFLAGS_PREFIX);
- if (!data)
- return 0;
- if (data->len != sizeof(uint32_t)) {
- gf_log("crypt", GF_LOG_WARNING, "Bad msgflags size (%d)", data->len);
- return -1;
- }
- flags = *((uint32_t *)data->data);
- return msgflags_check_mtd_lock(&flags);
-}
-
-static int32_t
-crypt_open_done(call_frame_t *frame, void *cookie, xlator_t *this,
- int32_t op_ret, int32_t op_errno, dict_t *xdata)
-{
- crypt_local_t *local = frame->local;
-
- local->op_ret = op_ret;
- local->op_errno = op_errno;
- if (op_ret < 0)
- gf_log(this->name, GF_LOG_WARNING, "mtd unlock failed (%d)", op_errno);
- put_one_call_open(frame);
- return 0;
-}
-
-static void
-crypt_open_tail(call_frame_t *frame, xlator_t *this)
-{
- struct gf_flock lock = {
- 0,
- };
- crypt_local_t *local = frame->local;
-
- lock.l_type = F_UNLCK;
- lock.l_whence = SEEK_SET;
- lock.l_start = 0;
- lock.l_len = 0;
- lock.l_pid = 0;
-
- STACK_WIND(frame, crypt_open_done, FIRST_CHILD(this),
- FIRST_CHILD(this)->fops->finodelk, this->name, local->fd,
- F_SETLKW, &lock, NULL);
-}
-
-/*
- * load private inode info at open time
- * called as ->fgetxattr_cbk()
- */
-static int
-load_mtd_open(call_frame_t *frame, void *cookie, xlator_t *this, int32_t op_ret,
- int32_t op_errno, dict_t *dict, dict_t *xdata)
-{
- int32_t ret;
- gf_boolean_t upload_info;
- data_t *mtd;
- uint64_t value = 0;
- struct crypt_inode_info *info;
- crypt_local_t *local = frame->local;
- crypt_private_t *priv = this->private;
-
- local->op_ret = op_ret;
- local->op_errno = op_errno;
-
- if (local->fd->inode->ia_type == IA_IFLNK)
- goto exit;
- if (op_ret < 0)
- goto exit;
- /*
- * first, check for cached info
- */
- ret = inode_ctx_get(local->fd->inode, this, &value);
- if (ret != -1) {
- info = (struct crypt_inode_info *)(long)value;
- if (info == NULL) {
- gf_log(this->name, GF_LOG_WARNING,
- "Inode info expected, but not found");
- local->op_ret = -1;
- local->op_errno = EIO;
- goto exit;
- }
- /*
- * info has been found in the cache
- */
- upload_info = _gf_false;
- } else {
- /*
- * info hasn't been found in the cache.
- */
- info = alloc_inode_info(local, local->loc);
- if (!info) {
- local->op_ret = -1;
- local->op_errno = ENOMEM;
- goto exit;
- }
- init_inode_info_head(info, local->fd);
- upload_info = _gf_true;
- }
- /*
- * extract metadata
- */
- mtd = dict_get(dict, CRYPTO_FORMAT_PREFIX);
- if (!mtd) {
- local->op_ret = -1;
- local->op_errno = ENOENT;
- gf_log(this->name, GF_LOG_WARNING, "Format string wasn't found");
- goto exit;
- }
- /*
- * authenticate metadata against the path
- */
- ret = open_format((unsigned char *)mtd->data, mtd->len, local->loc, info,
- get_master_cinfo(priv), local, upload_info);
- if (ret) {
- local->op_ret = -1;
- local->op_errno = ret;
- goto exit;
- }
- if (upload_info) {
- ret = init_inode_info_tail(info, get_master_cinfo(priv));
- if (ret) {
- local->op_ret = -1;
- local->op_errno = ret;
- goto exit;
- }
- ret = inode_ctx_put(local->fd->inode, this, (uint64_t)(long)info);
- if (ret == -1) {
- local->op_ret = -1;
- local->op_errno = EIO;
- goto exit;
- }
- }
- if (local->custom_mtd) {
- /*
- * pass the metadata string to the customer
- */
- ret = dict_set_static_bin(local->xdata, CRYPTO_FORMAT_PREFIX, mtd->data,
- mtd->len);
- if (ret) {
- local->op_ret = -1;
- local->op_errno = ret;
- goto exit;
- }
- }
-exit:
- if (!local->custom_mtd)
- crypt_open_tail(frame, this);
- else
- put_one_call_open(frame);
- return 0;
-}
-
-static int32_t
-crypt_open_finodelk_cbk(call_frame_t *frame, void *cookie, xlator_t *this,
- int32_t op_ret, int32_t op_errno, dict_t *xdata)
-{
- crypt_local_t *local = frame->local;
-
- local->op_ret = op_ret;
- local->op_errno = op_errno;
-
- if (op_ret < 0) {
- gf_log(this->name, GF_LOG_WARNING, "finodelk (LOCK) failed");
- goto exit;
- }
- STACK_WIND(frame, load_mtd_open, FIRST_CHILD(this),
- FIRST_CHILD(this)->fops->fgetxattr, local->fd,
- CRYPTO_FORMAT_PREFIX, NULL);
- return 0;
-exit:
- put_one_call_open(frame);
- return 0;
-}
-
-/*
- * verify metadata against the specified pathname
- */
-static int32_t
-crypt_open_cbk(call_frame_t *frame, void *cookie, xlator_t *this,
- int32_t op_ret, int32_t op_errno, fd_t *fd, dict_t *xdata)
-{
- struct gf_flock lock = {
- 0,
- };
- crypt_local_t *local = frame->local;
-
- local->op_ret = op_ret;
- local->op_errno = op_errno;
-
- if (local->fd->inode->ia_type == IA_IFLNK)
- goto exit;
- if (op_ret < 0)
- goto exit;
- if (xdata)
- local->xdata = dict_ref(xdata);
- else if (local->custom_mtd) {
- local->xdata = dict_new();
- if (!local->xdata) {
- local->op_ret = -1;
- local->op_errno = ENOMEM;
- gf_log("crypt", GF_LOG_ERROR,
- "Can not get new dict for mtd string");
- goto exit;
- }
- }
- lock.l_len = 0;
- lock.l_start = 0;
- lock.l_type = local->custom_mtd ? F_WRLCK : F_RDLCK;
- lock.l_whence = SEEK_SET;
-
- STACK_WIND(frame, crypt_open_finodelk_cbk, FIRST_CHILD(this),
- FIRST_CHILD(this)->fops->finodelk, this->name, fd, F_SETLKW,
- &lock, NULL);
- return 0;
-exit:
- put_one_call_open(frame);
- return 0;
-}
-
-static int32_t
-crypt_open(call_frame_t *frame, xlator_t *this, loc_t *loc, int32_t flags,
- fd_t *fd, dict_t *xdata)
-{
- int32_t ret = ENOMEM;
- crypt_local_t *local;
-
- local = crypt_alloc_local(frame, this, GF_FOP_OPEN);
- if (!local)
- goto error;
- local->loc = GF_CALLOC(1, sizeof(loc_t), gf_crypt_mt_loc);
- if (!local->loc) {
- ret = ENOMEM;
- goto error;
- }
- ret = loc_copy(local->loc, loc);
- if (ret) {
- GF_FREE(local->loc);
- ret = ENOMEM;
- goto error;
- }
- local->fd = fd_ref(fd);
-
- ret = is_custom_mtd(xdata);
- if (ret < 0) {
- loc_wipe(local->loc);
- GF_FREE(local->loc);
- ret = EINVAL;
- goto error;
- }
- local->custom_mtd = ret;
-
- if ((flags & O_ACCMODE) == O_WRONLY)
- /*
- * we can't open O_WRONLY, because
- * we need to do read-modify-write
- */
- flags = (flags & ~O_ACCMODE) | O_RDWR;
- /*
- * Make sure that out translated offsets
- * and counts won't be ignored
- */
- flags &= ~O_APPEND;
- get_one_call_nolock(frame);
- STACK_WIND(frame, crypt_open_cbk, FIRST_CHILD(this),
- FIRST_CHILD(this)->fops->open, loc, flags, fd, xdata);
- return 0;
-error:
- CRYPT_STACK_UNWIND(open, frame, -1, ret, NULL, NULL);
- return 0;
-}
-
-static int32_t
-init_inode_info_tail(struct crypt_inode_info *info,
- struct master_cipher_info *master)
-{
- int32_t ret;
- struct object_cipher_info *object = &info->cinfo;
-
-#if DEBUG_CRYPT
- gf_log("crypt", GF_LOG_DEBUG, "Init inode info for object %s",
- uuid_utoa(info->oid));
-#endif
- ret = data_cipher_algs[object->o_alg][object->o_mode].set_private(info,
- master);
- if (ret) {
- gf_log("crypt", GF_LOG_ERROR, "Set private info failed");
- return ret;
- }
- return 0;
-}
-
-/*
- * Init inode info at ->create() time
- */
-static void
-init_inode_info_create(struct crypt_inode_info *info,
- struct master_cipher_info *master, data_t *data)
-{
- struct object_cipher_info *object;
-
- info->nr_minor = CRYPT_XLATOR_ID;
- memcpy(info->oid, data->data, data->len);
-
- object = &info->cinfo;
-
- object->o_alg = master->m_alg;
- object->o_mode = master->m_mode;
- object->o_block_bits = master->m_block_bits;
- object->o_dkey_size = master->m_dkey_size;
-}
-
-static void
-init_inode_info_head(struct crypt_inode_info *info, fd_t *fd)
-{
- memcpy(info->oid, fd->inode->gfid, sizeof(uuid_t));
-}
-
-static int32_t
-crypt_create_done(call_frame_t *frame, void *cookie, xlator_t *this,
- int32_t op_ret, int32_t op_errno, dict_t *xdata)
-{
- crypt_private_t *priv = this->private;
- crypt_local_t *local = frame->local;
- struct crypt_inode_info *info = local->info;
- fd_t *local_fd = local->fd;
- dict_t *local_xdata = local->xdata;
- inode_t *local_inode = local->inode;
-
- if (op_ret < 0) {
- free_inode_info(info);
- goto unwind;
- }
- op_errno = init_inode_info_tail(info, get_master_cinfo(priv));
- if (op_errno) {
- op_ret = -1;
- free_inode_info(info);
- goto unwind;
- }
- /*
- * FIXME: drop major subversion number
- */
- op_ret = inode_ctx_put(local->fd->inode, this, (uint64_t)(long)info);
- if (op_ret == -1) {
- op_errno = EIO;
- free_inode_info(info);
- goto unwind;
- }
-unwind:
- free_format(local);
- CRYPT_STACK_UNWIND(create, frame, op_ret, op_errno, local_fd, local_inode,
- &local->buf, &local->prebuf, &local->postbuf,
- local_xdata);
- fd_unref(local_fd);
- inode_unref(local_inode);
- if (local_xdata)
- dict_unref(local_xdata);
- return 0;
-}
-
-static int
-crypt_create_tail(call_frame_t *frame, void *cookie, xlator_t *this,
- int32_t op_ret, int32_t op_errno, dict_t *xdata)
-{
- struct gf_flock lock = {
- 0,
- };
- crypt_local_t *local = frame->local;
- fd_t *local_fd = local->fd;
- dict_t *local_xdata = local->xdata;
- inode_t *local_inode = local->inode;
-
- dict_unref(local->xattr);
-
- if (op_ret < 0)
- goto error;
-
- lock.l_type = F_UNLCK;
- lock.l_whence = SEEK_SET;
- lock.l_start = 0;
- lock.l_len = 0;
- lock.l_pid = 0;
-
- STACK_WIND(frame, crypt_create_done, FIRST_CHILD(this),
- FIRST_CHILD(this)->fops->finodelk, this->name, local->fd,
- F_SETLKW, &lock, NULL);
- return 0;
-error:
- free_inode_info(local->info);
- free_format(local);
-
- CRYPT_STACK_UNWIND(create, frame, op_ret, op_errno, local_fd, local_inode,
- &local->buf, &local->prebuf, &local->postbuf,
- local_xdata);
-
- fd_unref(local_fd);
- inode_unref(local_inode);
- if (local_xdata)
- dict_unref(local_xdata);
- return 0;
-}
-
-static int32_t
-crypt_create_finodelk_cbk(call_frame_t *frame, void *cookie, xlator_t *this,
- int32_t op_ret, int32_t op_errno, dict_t *xdata)
-{
- crypt_local_t *local = frame->local;
- struct crypt_inode_info *info = local->info;
-
- if (op_ret < 0)
- goto error;
-
- STACK_WIND(frame, crypt_create_tail, FIRST_CHILD(this),
- FIRST_CHILD(this)->fops->fsetxattr, local->fd,
- local->xattr, /* CRYPTO_FORMAT_PREFIX */
- 0, NULL);
- return 0;
-error:
- free_inode_info(info);
- free_format(local);
- fd_unref(local->fd);
- dict_unref(local->xattr);
- if (local->xdata)
- dict_unref(local->xdata);
-
- CRYPT_STACK_UNWIND(create, frame, op_ret, op_errno, NULL, NULL, NULL, NULL,
- NULL, NULL);
- return 0;
-}
-
-/*
- * Create and store crypt-specific format on disk;
- * Populate cache with private inode info
- */
-static int32_t
-crypt_create_cbk(call_frame_t *frame, void *cookie, xlator_t *this,
- int32_t op_ret, int32_t op_errno, fd_t *fd, inode_t *inode,
- struct iatt *buf, struct iatt *preparent,
- struct iatt *postparent, dict_t *xdata)
-{
- struct gf_flock lock = {
- 0,
- };
- crypt_local_t *local = frame->local;
- struct crypt_inode_info *info = local->info;
-
- if (op_ret < 0)
- goto error;
- if (xdata)
- local->xdata = dict_ref(xdata);
- local->inode = inode_ref(inode);
- local->buf = *buf;
- local->prebuf = *preparent;
- local->postbuf = *postparent;
-
- lock.l_len = 0;
- lock.l_start = 0;
- lock.l_type = F_WRLCK;
- lock.l_whence = SEEK_SET;
-
- STACK_WIND(frame, crypt_create_finodelk_cbk, FIRST_CHILD(this),
- FIRST_CHILD(this)->fops->finodelk, this->name, local->fd,
- F_SETLKW, &lock, NULL);
- return 0;
-error:
- free_inode_info(info);
- free_format(local);
- fd_unref(local->fd);
- dict_unref(local->xattr);
-
- CRYPT_STACK_UNWIND(create, frame, op_ret, op_errno, NULL, NULL, NULL, NULL,
- NULL, NULL);
- return 0;
-}
-
-static int32_t
-crypt_create(call_frame_t *frame, xlator_t *this, loc_t *loc, int32_t flags,
- mode_t mode, mode_t umask, fd_t *fd, dict_t *xdata)
-{
- int ret;
- data_t *data;
- crypt_local_t *local;
- crypt_private_t *priv;
- struct master_cipher_info *master;
- struct crypt_inode_info *info;
-
- priv = this->private;
- master = get_master_cinfo(priv);
-
- if (master_alg_atomic(master)) {
- /*
- * We can't open O_WRONLY, because we
- * need to do read-modify-write.
- */
- if ((flags & O_ACCMODE) == O_WRONLY)
- flags = (flags & ~O_ACCMODE) | O_RDWR;
- /*
- * Make sure that out translated offsets
- * and counts won't be ignored
- */
- flags &= ~O_APPEND;
- }
- local = crypt_alloc_local(frame, this, GF_FOP_CREATE);
- if (!local) {
- ret = ENOMEM;
- goto error;
- }
- data = dict_get(xdata, "gfid-req");
- if (!data) {
- ret = EINVAL;
- gf_log("crypt", GF_LOG_WARNING, "gfid not found");
- goto error;
- }
- if (data->len != sizeof(uuid_t)) {
- ret = EINVAL;
- gf_log("crypt", GF_LOG_WARNING, "bad gfid size (%d), should be %d",
- (int)data->len, (int)sizeof(uuid_t));
- goto error;
- }
- info = alloc_inode_info(local, loc);
- if (!info) {
- ret = ENOMEM;
- goto error;
- }
- /*
- * NOTE:
- * format has to be created BEFORE
- * proceeding to the untrusted server
- */
- ret = alloc_format_create(local);
- if (ret) {
- free_inode_info(info);
- goto error;
- }
- init_inode_info_create(info, master, data);
-
- ret = create_format(local->format, loc, info, master);
- if (ret) {
- free_inode_info(info);
- goto error;
- }
- local->xattr = dict_new();
- if (!local->xattr) {
- free_inode_info(info);
- free_format(local);
- goto error;
- }
- ret = dict_set_static_bin(local->xattr, CRYPTO_FORMAT_PREFIX, local->format,
- new_format_size());
- if (ret) {
- dict_unref(local->xattr);
- free_inode_info(info);
- free_format(local);
- ret = EINVAL;
- goto error;
- }
- ret = dict_set(local->xattr, FSIZE_XATTR_PREFIX, data_from_uint64(0));
- if (ret) {
- dict_unref(local->xattr);
- free_inode_info(info);
- free_format(local);
- ret = ENOMEM;
- goto error;
- }
- local->fd = fd_ref(fd);
-
- STACK_WIND(frame, crypt_create_cbk, FIRST_CHILD(this),
- FIRST_CHILD(this)->fops->create, loc, flags, mode, umask, fd,
- xdata);
- return 0;
-error:
- gf_log("crypt", GF_LOG_WARNING, "can not create file");
- CRYPT_STACK_UNWIND(create, frame, -1, ret, NULL, NULL, NULL, NULL, NULL,
- NULL);
- return 0;
-}
-
-/*
- * FIXME: this should depends on the version of format string
- */
-static int32_t
-filter_crypt_xattr(dict_t *dict, char *key, data_t *value, void *data)
-{
- dict_del(dict, key);
- return 0;
-}
-
-static int32_t
-crypt_fsetxattr(call_frame_t *frame, xlator_t *this, fd_t *fd, dict_t *dict,
- int32_t flags, dict_t *xdata)
-{
- dict_foreach_fnmatch(dict, "trusted.glusterfs.crypt*", filter_crypt_xattr,
- NULL);
- STACK_WIND(frame, default_fsetxattr_cbk, FIRST_CHILD(this),
- FIRST_CHILD(this)->fops->fsetxattr, fd, dict, flags, xdata);
- return 0;
-}
-
-/*
- * TBD: verify file metadata before wind
- */
-static int32_t
-crypt_setxattr(call_frame_t *frame, xlator_t *this, loc_t *loc, dict_t *dict,
- int32_t flags, dict_t *xdata)
-{
- dict_foreach_fnmatch(dict, "trusted.glusterfs.crypt*", filter_crypt_xattr,
- NULL);
- STACK_WIND(frame, default_setxattr_cbk, FIRST_CHILD(this),
- FIRST_CHILD(this)->fops->setxattr, loc, dict, flags, xdata);
- return 0;
-}
-
-/*
- * called as flush_cbk()
- */
-static int32_t
-linkop_end(call_frame_t *frame, void *cookie, xlator_t *this, int32_t op_ret,
- int32_t op_errno, dict_t *xdata)
-{
- crypt_local_t *local = frame->local;
- linkop_unwind_handler_t unwind_fn;
- unwind_fn = linkop_unwind_dispatch(local->fop);
-
- local->op_ret = op_ret;
- local->op_errno = op_errno;
-
- if (op_ret < 0 && op_errno == ENOENT &&
- local->loc->inode->ia_type == IA_IFLNK) {
- local->op_ret = 0;
- local->op_errno = 0;
- }
- unwind_fn(frame);
- return 0;
-}
-
-/*
- * unpin inode on the server
- */
-static int32_t
-link_flush(call_frame_t *frame, void *cookie, xlator_t *this, int32_t op_ret,
- int32_t op_errno, inode_t *inode, struct iatt *buf,
- struct iatt *preparent, struct iatt *postparent, dict_t *xdata)
-{
- crypt_local_t *local = frame->local;
-
- if (op_ret < 0)
- goto error;
- if (local->xdata) {
- dict_unref(local->xdata);
- local->xdata = NULL;
- }
- if (xdata)
- local->xdata = dict_ref(xdata);
- local->inode = inode_ref(inode);
- local->buf = *buf;
- local->prebuf = *preparent;
- local->postbuf = *postparent;
-
- STACK_WIND(frame, linkop_end, FIRST_CHILD(this),
- FIRST_CHILD(this)->fops->flush, local->fd, NULL);
- return 0;
-error:
- local->op_ret = -1;
- local->op_errno = op_errno;
- link_unwind(frame);
- return 0;
-}
-
-void
-link_unwind(call_frame_t *frame)
-{
- crypt_local_t *local = frame->local;
- dict_t *xdata;
- dict_t *xattr;
- inode_t *inode;
-
- if (!local) {
- CRYPT_STACK_UNWIND(link, frame, -1, ENOMEM, NULL, NULL, NULL, NULL,
- NULL);
- return;
- }
- xdata = local->xdata;
- xattr = local->xattr;
- inode = local->inode;
-
- if (local->loc) {
- loc_wipe(local->loc);
- GF_FREE(local->loc);
- }
- if (local->newloc) {
- loc_wipe(local->newloc);
- GF_FREE(local->newloc);
- }
- if (local->fd)
- fd_unref(local->fd);
- if (local->format)
- GF_FREE(local->format);
-
- CRYPT_STACK_UNWIND(link, frame, local->op_ret, local->op_errno, inode,
- &local->buf, &local->prebuf, &local->postbuf, xdata);
- if (xdata)
- dict_unref(xdata);
- if (xattr)
- dict_unref(xattr);
- if (inode)
- inode_unref(inode);
-}
-
-void
-link_wind(call_frame_t *frame, xlator_t *this)
-{
- crypt_local_t *local = frame->local;
-
- STACK_WIND(frame, link_flush, FIRST_CHILD(this),
- FIRST_CHILD(this)->fops->link, local->loc, local->newloc,
- local->xdata);
-}
-
-/*
- * unlink()
- */
-static int32_t
-unlink_flush(call_frame_t *frame, void *cookie, xlator_t *this, int32_t op_ret,
- int32_t op_errno, struct iatt *preparent, struct iatt *postparent,
- dict_t *xdata)
-{
- crypt_local_t *local = frame->local;
-
- if (op_ret < 0)
- goto error;
- local->prebuf = *preparent;
- local->postbuf = *postparent;
- if (local->xdata) {
- dict_unref(local->xdata);
- local->xdata = NULL;
- }
- if (xdata)
- local->xdata = dict_ref(xdata);
-
- STACK_WIND(frame, linkop_end, FIRST_CHILD(this),
- FIRST_CHILD(this)->fops->flush, local->fd, NULL);
- return 0;
-error:
- local->op_ret = -1;
- local->op_errno = op_errno;
- unlink_unwind(frame);
- return 0;
-}
-
-void
-unlink_unwind(call_frame_t *frame)
-{
- crypt_local_t *local = frame->local;
- dict_t *xdata;
- dict_t *xattr;
-
- if (!local) {
- CRYPT_STACK_UNWIND(unlink, frame, -1, ENOMEM, NULL, NULL, NULL);
- return;
- }
- xdata = local->xdata;
- xattr = local->xattr;
- if (local->loc) {
- loc_wipe(local->loc);
- GF_FREE(local->loc);
- }
- if (local->fd)
- fd_unref(local->fd);
- if (local->format)
- GF_FREE(local->format);
-
- CRYPT_STACK_UNWIND(unlink, frame, local->op_ret, local->op_errno,
- &local->prebuf, &local->postbuf, xdata);
- if (xdata)
- dict_unref(xdata);
- if (xattr)
- dict_unref(xattr);
-}
-
-void
-unlink_wind(call_frame_t *frame, xlator_t *this)
-{
- crypt_local_t *local = frame->local;
-
- STACK_WIND(frame, unlink_flush, FIRST_CHILD(this),
- FIRST_CHILD(this)->fops->unlink, local->loc, local->flags,
- local->xdata);
-}
-
-void
-rename_unwind(call_frame_t *frame)
-{
- crypt_local_t *local = frame->local;
- dict_t *xdata;
- dict_t *xattr;
- struct iatt *prenewparent;
- struct iatt *postnewparent;
-
- if (!local) {
- CRYPT_STACK_UNWIND(rename, frame, -1, ENOMEM, NULL, NULL, NULL, NULL,
- NULL, NULL);
- return;
- }
- xdata = local->xdata;
- xattr = local->xattr;
- prenewparent = local->prenewparent;
- postnewparent = local->postnewparent;
-
- if (local->loc) {
- loc_wipe(local->loc);
- GF_FREE(local->loc);
- }
- if (local->newloc) {
- loc_wipe(local->newloc);
- GF_FREE(local->newloc);
- }
- if (local->fd)
- fd_unref(local->fd);
- if (local->format)
- GF_FREE(local->format);
-
- CRYPT_STACK_UNWIND(rename, frame, local->op_ret, local->op_errno,
- &local->buf, &local->prebuf, &local->postbuf,
- prenewparent, postnewparent, xdata);
- if (xdata)
- dict_unref(xdata);
- if (xattr)
- dict_unref(xattr);
- if (prenewparent)
- GF_FREE(prenewparent);
- if (postnewparent)
- GF_FREE(postnewparent);
-}
-
-/*
- * called as flush_cbk()
- */
-static int32_t
-rename_end(call_frame_t *frame, void *cookie, xlator_t *this, int32_t op_ret,
- int32_t op_errno, dict_t *xdata)
-{
- crypt_local_t *local = frame->local;
-
- local->op_ret = op_ret;
- local->op_errno = op_errno;
-
- rename_unwind(frame);
- return 0;
-}
-
-static int32_t
-rename_flush(call_frame_t *frame, void *cookie, xlator_t *this, int32_t op_ret,
- int32_t op_errno, struct iatt *buf, struct iatt *preoldparent,
- struct iatt *postoldparent, struct iatt *prenewparent,
- struct iatt *postnewparent, dict_t *xdata)
-{
- crypt_local_t *local = frame->local;
-
- if (op_ret < 0)
- goto error;
- dict_unref(local->xdata);
- local->xdata = NULL;
- if (xdata)
- local->xdata = dict_ref(xdata);
-
- local->buf = *buf;
- local->prebuf = *preoldparent;
- local->postbuf = *postoldparent;
- if (prenewparent) {
- local->prenewparent = GF_CALLOC(1, sizeof(*prenewparent),
- gf_crypt_mt_iatt);
- if (!local->prenewparent) {
- op_errno = ENOMEM;
- goto error;
- }
- *local->prenewparent = *prenewparent;
- }
- if (postnewparent) {
- local->postnewparent = GF_CALLOC(1, sizeof(*postnewparent),
- gf_crypt_mt_iatt);
- if (!local->postnewparent) {
- op_errno = ENOMEM;
- goto error;
- }
- *local->postnewparent = *postnewparent;
- }
- STACK_WIND(frame, rename_end, FIRST_CHILD(this),
- FIRST_CHILD(this)->fops->flush, local->fd, NULL);
- return 0;
-error:
- local->op_ret = -1;
- local->op_errno = op_errno;
- rename_unwind(frame);
- return 0;
-}
-
-void
-rename_wind(call_frame_t *frame, xlator_t *this)
-{
- crypt_local_t *local = frame->local;
-
- STACK_WIND(frame, rename_flush, FIRST_CHILD(this),
- FIRST_CHILD(this)->fops->rename, local->loc, local->newloc,
- local->xdata);
-}
-
-static int32_t
-__do_linkop(call_frame_t *frame, void *cookie, xlator_t *this, int32_t op_ret,
- int32_t op_errno, dict_t *xdata)
-{
- crypt_local_t *local = frame->local;
- linkop_wind_handler_t wind_fn;
- linkop_unwind_handler_t unwind_fn;
-
- wind_fn = linkop_wind_dispatch(local->fop);
- unwind_fn = linkop_unwind_dispatch(local->fop);
-
- local->op_ret = op_ret;
- local->op_errno = op_errno;
-
- if (op_ret >= 0)
- wind_fn(frame, this);
- else {
- gf_log(this->name, GF_LOG_WARNING, "mtd unlock failed (%d)", op_errno);
- unwind_fn(frame);
- }
- return 0;
-}
-
-static int32_t
-do_linkop(call_frame_t *frame, void *cookie, xlator_t *this, int32_t op_ret,
- int32_t op_errno, dict_t *xdata)
-{
- struct gf_flock lock = {
- 0,
- };
- crypt_local_t *local = frame->local;
- linkop_unwind_handler_t unwind_fn;
-
- unwind_fn = linkop_unwind_dispatch(local->fop);
- local->op_ret = op_ret;
- local->op_errno = op_errno;
-
- if (op_ret < 0)
- goto error;
-
- lock.l_type = F_UNLCK;
- lock.l_whence = SEEK_SET;
- lock.l_start = 0;
- lock.l_len = 0;
- lock.l_pid = 0;
-
- STACK_WIND(frame, __do_linkop, FIRST_CHILD(this),
- FIRST_CHILD(this)->fops->finodelk, this->name, local->fd,
- F_SETLKW, &lock, NULL);
- return 0;
-error:
- unwind_fn(frame);
- return 0;
-}
-
-/*
- * Update the metadata string (against the new pathname);
- * submit the result
- */
-static int32_t
-linkop_begin(call_frame_t *frame, void *cookie, xlator_t *this, int32_t op_ret,
- int32_t op_errno, fd_t *fd, dict_t *xdata)
-{
- gf_boolean_t upload_info;
- crypt_local_t *local = frame->local;
- crypt_private_t *priv = this->private;
- struct crypt_inode_info *info;
- data_t *old_mtd;
- uint32_t new_mtd_size;
- uint64_t value = 0;
- void (*unwind_fn)(call_frame_t * frame);
- mtd_op_t mop;
-
- unwind_fn = linkop_unwind_dispatch(local->fop);
- mop = linkop_mtdop_dispatch(local->fop);
-
- if (op_ret < 0) {
- /*
- * verification failed
- */
- goto error;
- } else {
- fd_bind(fd);
- }
-
- old_mtd = dict_get(xdata, CRYPTO_FORMAT_PREFIX);
- if (!old_mtd) {
- op_errno = EIO;
- gf_log(this->name, GF_LOG_DEBUG, "Metadata string wasn't found");
- goto error;
- }
- new_mtd_size = format_size(mop, old_mtd->len);
- op_errno = alloc_format(local, new_mtd_size);
- if (op_errno)
- goto error;
- /*
- * check for cached info
- */
- op_ret = inode_ctx_get(fd->inode, this, &value);
- if (op_ret != -1) {
- info = (struct crypt_inode_info *)(long)value;
- if (info == NULL) {
- gf_log(this->name, GF_LOG_WARNING, "Inode info was not found");
- op_errno = EINVAL;
- goto error;
- }
- /*
- * info was found in the cache
- */
- local->info = info;
- upload_info = _gf_false;
- } else {
- /*
- * info wasn't found in the cache;
- */
- info = alloc_inode_info(local, local->loc);
- if (!info)
- goto error;
- init_inode_info_head(info, fd);
- local->info = info;
- upload_info = _gf_true;
- }
- op_errno = open_format((unsigned char *)old_mtd->data, old_mtd->len,
- local->loc, info, get_master_cinfo(priv), local,
- upload_info);
- if (op_errno)
- goto error;
- if (upload_info == _gf_true) {
- op_errno = init_inode_info_tail(info, get_master_cinfo(priv));
- if (op_errno)
- goto error;
- op_errno = inode_ctx_put(fd->inode, this, (uint64_t)(long)(info));
- if (op_errno == -1) {
- op_errno = EIO;
- goto error;
- }
- }
- /*
- * update the format string (append/update/cup a MAC)
- */
- op_errno = update_format(local->format, (unsigned char *)old_mtd->data,
- old_mtd->len, local->mac_idx, mop, local->newloc,
- info, get_master_cinfo(priv), local);
- if (op_errno)
- goto error;
- /*
- * store the new format string on the server
- */
- if (new_mtd_size) {
- op_errno = dict_set_static_bin(local->xattr, CRYPTO_FORMAT_PREFIX,
- local->format, new_mtd_size);
- if (op_errno)
- goto error;
- }
- STACK_WIND(frame, do_linkop, FIRST_CHILD(this),
- FIRST_CHILD(this)->fops->setxattr, local->loc, local->xattr, 0,
- NULL);
- return 0;
-error:
- local->op_ret = -1;
- local->op_errno = op_errno;
- unwind_fn(frame);
- return 0;
-}
-
-static int32_t
-linkop_grab_local(call_frame_t *frame, xlator_t *this, loc_t *oldloc,
- loc_t *newloc, int flags, dict_t *xdata, glusterfs_fop_t op)
-{
- int32_t ret = ENOMEM;
- fd_t *fd;
- crypt_local_t *local;
-
- local = crypt_alloc_local(frame, this, op);
- if (!local)
- goto error;
- if (xdata)
- local->xdata = dict_ref(xdata);
-
- fd = fd_create(oldloc->inode, frame->root->pid);
- if (!fd) {
- gf_log(this->name, GF_LOG_ERROR, "Can not create fd");
- goto error;
- }
- local->fd = fd;
- local->flags = flags;
- local->loc = GF_CALLOC(1, sizeof(loc_t), gf_crypt_mt_loc);
- if (!local->loc)
- goto error;
- ret = loc_copy(local->loc, oldloc);
- if (ret) {
- GF_FREE(local->loc);
- local->loc = NULL;
- goto error;
- }
- if (newloc) {
- local->newloc = GF_CALLOC(1, sizeof(loc_t), gf_crypt_mt_loc);
- if (!local->newloc) {
- loc_wipe(local->loc);
- GF_FREE(local->loc);
- goto error;
- }
- ret = loc_copy(local->newloc, newloc);
- if (ret) {
- loc_wipe(local->loc);
- GF_FREE(local->loc);
- GF_FREE(local->newloc);
- goto error;
- }
- }
- local->xattr = dict_new();
- if (!local->xattr) {
- gf_log(this->name, GF_LOG_ERROR, "Can not create dict");
- ret = ENOMEM;
- goto error;
- }
- return 0;
-
-error:
- if (local) {
- if (local->xdata)
- dict_unref(local->xdata);
- if (local->fd)
- fd_unref(local->fd);
- local->fd = 0;
- local->loc = NULL;
- local->newloc = NULL;
- local->op_ret = -1;
- local->op_errno = ret;
- }
-
- return ret;
-}
-
-/*
- * read and verify locked metadata against the old pathname (via open);
- * update the metadata string in accordance with the new pathname;
- * submit modified metadata;
- * wind;
- */
-static int32_t
-linkop(call_frame_t *frame, xlator_t *this, loc_t *oldloc, loc_t *newloc,
- int flags, dict_t *xdata, glusterfs_fop_t op)
-{
- int32_t ret;
- dict_t *dict;
- crypt_local_t *local;
- void (*unwind_fn)(call_frame_t * frame);
- void (*wind_fn)(call_frame_t * frame, xlator_t * this);
-
- wind_fn = linkop_wind_dispatch(op);
- unwind_fn = linkop_unwind_dispatch(op);
-
- ret = linkop_grab_local(frame, this, oldloc, newloc, flags, xdata, op);
- local = frame->local;
- if (ret)
- goto error;
-
- if (local->fd->inode->ia_type == IA_IFLNK)
- goto wind;
-
- dict = dict_new();
- if (!dict) {
- gf_log(this->name, GF_LOG_ERROR, "Can not create dict");
- ret = ENOMEM;
- goto error;
- }
- /*
- * Set a message to crypt_open() that we need
- * locked metadata string.
- * All link operations (link, unlink, rename)
- * need write lock
- */
- msgflags_set_mtd_wlock(&local->msgflags);
- ret = dict_set_static_bin(dict, MSGFLAGS_PREFIX, &local->msgflags,
- sizeof(local->msgflags));
- if (ret) {
- gf_log(this->name, GF_LOG_ERROR, "Can not set dict");
- dict_unref(dict);
- goto error;
- }
- /*
- * verify metadata against the old pathname
- * and retrieve locked metadata string
- */
- STACK_WIND(frame, linkop_begin, this, this->fops->open, /* crypt_open() */
- oldloc, O_RDWR, local->fd, dict);
- dict_unref(dict);
- return 0;
-
-wind:
- wind_fn(frame, this);
- return 0;
-
-error:
- local->op_ret = -1;
- local->op_errno = ret;
- unwind_fn(frame);
- return 0;
-}
-
-static int32_t
-crypt_link(call_frame_t *frame, xlator_t *this, loc_t *oldloc, loc_t *newloc,
- dict_t *xdata)
-{
- return linkop(frame, this, oldloc, newloc, 0, xdata, GF_FOP_LINK);
-}
-
-static int32_t
-crypt_unlink(call_frame_t *frame, xlator_t *this, loc_t *loc, int flags,
- dict_t *xdata)
-{
- return linkop(frame, this, loc, NULL, flags, xdata, GF_FOP_UNLINK);
-}
-
-static int32_t
-crypt_rename(call_frame_t *frame, xlator_t *this, loc_t *oldloc, loc_t *newloc,
- dict_t *xdata)
-{
- return linkop(frame, this, oldloc, newloc, 0, xdata, GF_FOP_RENAME);
-}
-
-static void
-put_one_call_open(call_frame_t *frame)
-{
- crypt_local_t *local = frame->local;
- if (put_one_call(local)) {
- fd_t *fd = local->fd;
- loc_t *loc = local->loc;
- dict_t *xdata = local->xdata;
-
- CRYPT_STACK_UNWIND(open, frame, local->op_ret, local->op_errno, fd,
- xdata);
- fd_unref(fd);
- if (xdata)
- dict_unref(xdata);
- loc_wipe(loc);
- GF_FREE(loc);
- }
-}
-
-static int32_t
-__crypt_readv_done(call_frame_t *frame, void *cookie, xlator_t *this,
- int32_t op_ret, int32_t op_errno, dict_t *xdata)
-{
- crypt_local_t *local = frame->local;
- fd_t *local_fd = local->fd;
- dict_t *local_xdata = local->xdata;
- /* read deals with data configs only */
- struct iovec *avec = local->data_conf.avec;
- char **pool = local->data_conf.pool;
- int blocks_in_pool = local->data_conf.blocks_in_pool;
- struct iobref *iobref = local->iobref;
- struct iobref *iobref_data = local->iobref_data;
-
- if (op_ret < 0) {
- gf_log(this->name, GF_LOG_WARNING, "readv unlock failed (%d)",
- op_errno);
- if (local->op_ret >= 0) {
- local->op_ret = op_ret;
- local->op_errno = op_errno;
- }
- }
- dump_plain_text(local, avec);
-
- gf_log("crypt", GF_LOG_DEBUG,
- "readv: ret_to_user: %d, iovec len: %d, ia_size: %llu",
- (int)(local->rw_count > 0 ? local->rw_count : local->op_ret),
- (int)(local->rw_count > 0 ? iov_length(avec, local->data_conf.acount)
- : 0),
- (unsigned long long)local->buf.ia_size);
-
- CRYPT_STACK_UNWIND(
- readv, frame, local->rw_count > 0 ? local->rw_count : local->op_ret,
- local->op_errno, avec, avec ? local->data_conf.acount : 0, &local->buf,
- local->iobref, local_xdata);
-
- free_avec(avec, pool, blocks_in_pool);
- fd_unref(local_fd);
- if (local_xdata)
- dict_unref(local_xdata);
- if (iobref)
- iobref_unref(iobref);
- if (iobref_data)
- iobref_unref(iobref_data);
- return 0;
-}
-
-static void
-crypt_readv_done(call_frame_t *frame, xlator_t *this)
-{
- if (parent_is_crypt_xlator(frame, this))
- /*
- * don't unlock (it will be done by the parent)
- */
- __crypt_readv_done(frame, NULL, this, 0, 0, NULL);
- else {
- crypt_local_t *local = frame->local;
- struct gf_flock lock = {
- 0,
- };
-
- lock.l_type = F_UNLCK;
- lock.l_whence = SEEK_SET;
- lock.l_start = 0;
- lock.l_len = 0;
- lock.l_pid = 0;
-
- STACK_WIND(frame, __crypt_readv_done, FIRST_CHILD(this),
- FIRST_CHILD(this)->fops->finodelk, this->name, local->fd,
- F_SETLKW, &lock, NULL);
- }
-}
-
-static void
-put_one_call_readv(call_frame_t *frame, xlator_t *this)
-{
- crypt_local_t *local = frame->local;
- if (put_one_call(local))
- crypt_readv_done(frame, this);
-}
-
-static int32_t
-__crypt_writev_done(call_frame_t *frame, void *cookie, xlator_t *this,
- int32_t op_ret, int32_t op_errno, dict_t *xdata)
-{
- crypt_local_t *local = frame->local;
- fd_t *local_fd = local->fd;
- dict_t *local_xdata = local->xdata;
- int32_t ret_to_user;
-
- if (local->xattr)
- dict_unref(local->xattr);
- /*
- * Calculate amount of butes to be returned
- * to user. We need to subtract paddings that
- * have been written as a part of atom.
- */
- /*
- * subtract head padding
- */
- if (local->rw_count == 0)
- /*
- * Nothing has been written, it must be an error
- */
- ret_to_user = local->op_ret;
- else if (local->rw_count <= local->data_conf.off_in_head) {
- gf_log("crypt", GF_LOG_WARNING, "Incomplete write");
- ret_to_user = 0;
- } else
- ret_to_user = local->rw_count - local->data_conf.off_in_head;
- /*
- * subtract tail padding
- */
- if (ret_to_user > local->data_conf.orig_size)
- ret_to_user = local->data_conf.orig_size;
-
- if (local->iobref)
- iobref_unref(local->iobref);
- if (local->iobref_data)
- iobref_unref(local->iobref_data);
- free_avec_data(local);
- free_avec_hole(local);
-
- gf_log("crypt", GF_LOG_DEBUG, "writev: ret_to_user: %d", ret_to_user);
-
- CRYPT_STACK_UNWIND(writev, frame, ret_to_user, local->op_errno,
- &local->prebuf, &local->postbuf, local_xdata);
- fd_unref(local_fd);
- if (local_xdata)
- dict_unref(local_xdata);
- return 0;
-}
-
-static int32_t
-crypt_writev_done(call_frame_t *frame, void *cookie, xlator_t *this,
- int32_t op_ret, int32_t op_errno, dict_t *xdata)
-{
- crypt_local_t *local = frame->local;
-
- if (op_ret < 0)
- gf_log("crypt", GF_LOG_WARNING, "can not update file size");
-
- if (parent_is_crypt_xlator(frame, this))
- /*
- * don't unlock (it will be done by the parent)
- */
- __crypt_writev_done(frame, NULL, this, 0, 0, NULL);
- else {
- struct gf_flock lock = {
- 0,
- };
-
- lock.l_type = F_UNLCK;
- lock.l_whence = SEEK_SET;
- lock.l_start = 0;
- lock.l_len = 0;
- lock.l_pid = 0;
-
- STACK_WIND(frame, __crypt_writev_done, FIRST_CHILD(this),
- FIRST_CHILD(this)->fops->finodelk, this->name, local->fd,
- F_SETLKW, &lock, NULL);
- }
- return 0;
-}
-
-static void
-put_one_call_writev(call_frame_t *frame, xlator_t *this)
-{
- crypt_local_t *local = frame->local;
- if (put_one_call(local)) {
- if (local->update_disk_file_size) {
- int32_t ret;
- /*
- * update file size, unlock the file and unwind
- */
- ret = dict_set(local->xattr, FSIZE_XATTR_PREFIX,
- data_from_uint64(local->cur_file_size));
- if (ret) {
- gf_log("crypt", GF_LOG_WARNING,
- "can not set key to update file size");
- crypt_writev_done(frame, NULL, this, 0, 0, NULL);
- return;
- }
- gf_log("crypt", GF_LOG_DEBUG, "Updating disk file size to %llu",
- (unsigned long long)local->cur_file_size);
- STACK_WIND(frame, crypt_writev_done, FIRST_CHILD(this),
- FIRST_CHILD(this)->fops->fsetxattr, local->fd,
- local->xattr, /* CRYPTO_FORMAT_PREFIX */
- 0, NULL);
- } else
- crypt_writev_done(frame, NULL, this, 0, 0, NULL);
- }
-}
-
-static int32_t
-__crypt_ftruncate_done(call_frame_t *frame, void *cookie, xlator_t *this,
- int32_t op_ret, int32_t op_errno, dict_t *xdata)
-{
- crypt_local_t *local = frame->local;
- fd_t *local_fd = local->fd;
- dict_t *local_xdata = local->xdata;
- char *iobase = local->vec.iov_base;
-
- if (op_ret < 0) {
- gf_log(this->name, GF_LOG_WARNING, "ftruncate unlock failed (%d)",
- op_errno);
- if (local->op_ret >= 0) {
- local->op_ret = op_ret;
- local->op_errno = op_errno;
- }
- }
- if (local->iobref_data)
- iobref_unref(local->iobref_data);
- free_avec_data(local);
- free_avec_hole(local);
-
- gf_log("crypt", GF_LOG_DEBUG,
- "ftruncate, return to user: presize=%llu, postsize=%llu",
- (unsigned long long)local->prebuf.ia_size,
- (unsigned long long)local->postbuf.ia_size);
-
- CRYPT_STACK_UNWIND(ftruncate, frame, ((local->op_ret < 0) ? -1 : 0),
- local->op_errno, &local->prebuf, &local->postbuf,
- local_xdata);
- fd_unref(local_fd);
- if (local_xdata)
- dict_unref(local_xdata);
- if (iobase)
- GF_FREE(iobase);
- return 0;
-}
-
-static int32_t
-crypt_ftruncate_done(call_frame_t *frame, void *cookie, xlator_t *this,
- int32_t op_ret, int32_t op_errno, dict_t *xdata)
-{
- crypt_local_t *local = frame->local;
- struct gf_flock lock = {
- 0,
- };
-
- dict_unref(local->xattr);
- if (op_ret < 0)
- gf_log("crypt", GF_LOG_WARNING, "can not update file size");
-
- lock.l_type = F_UNLCK;
- lock.l_whence = SEEK_SET;
- lock.l_start = 0;
- lock.l_len = 0;
- lock.l_pid = 0;
-
- STACK_WIND(frame, __crypt_ftruncate_done, FIRST_CHILD(this),
- FIRST_CHILD(this)->fops->finodelk, this->name, local->fd,
- F_SETLKW, &lock, NULL);
- return 0;
-}
-
-static void
-put_one_call_ftruncate(call_frame_t *frame, xlator_t *this)
-{
- crypt_local_t *local = frame->local;
- if (put_one_call(local)) {
- if (local->update_disk_file_size) {
- int32_t ret;
- /*
- * update file size, unlock the file and unwind
- */
- ret = dict_set(local->xattr, FSIZE_XATTR_PREFIX,
- data_from_uint64(local->cur_file_size));
- if (ret) {
- gf_log("crypt", GF_LOG_WARNING,
- "can not set key to update file size");
- crypt_ftruncate_done(frame, NULL, this, 0, 0, NULL);
- return;
- }
- gf_log("crypt", GF_LOG_DEBUG, "Updating disk file size to %llu",
- (unsigned long long)local->cur_file_size);
- STACK_WIND(frame, crypt_ftruncate_done, FIRST_CHILD(this),
- FIRST_CHILD(this)->fops->fsetxattr, local->fd,
- local->xattr, /* CRYPTO_FORMAT_PREFIX */
- 0, NULL);
- } else
- crypt_ftruncate_done(frame, NULL, this, 0, 0, NULL);
- }
-}
-
-/*
- * load regular file size for some FOPs
- */
-static int32_t
-load_file_size(call_frame_t *frame, void *cookie, xlator_t *this,
- int32_t op_ret, int32_t op_errno, dict_t *dict, dict_t *xdata)
-{
- data_t *data;
- crypt_local_t *local = frame->local;
-
- dict_t *local_xdata = local->xdata;
- inode_t *local_inode = local->inode;
-
- if (op_ret < 0)
- goto unwind;
- /*
- * load regular file size
- */
- data = dict_get(dict, FSIZE_XATTR_PREFIX);
- if (!data) {
- if (local->xdata)
- dict_unref(local->xdata);
- gf_log("crypt", GF_LOG_WARNING, "Regular file size not found");
- op_ret = -1;
- op_errno = EIO;
- goto unwind;
- }
- local->buf.ia_size = data_to_uint64(data);
-
- gf_log(this->name, GF_LOG_DEBUG, "FOP %d: Translate regular file to %llu",
- local->fop, (unsigned long long)local->buf.ia_size);
-unwind:
- if (local->fd)
- fd_unref(local->fd);
- if (local->loc) {
- loc_wipe(local->loc);
- GF_FREE(local->loc);
- }
- switch (local->fop) {
- case GF_FOP_FSTAT:
- CRYPT_STACK_UNWIND(fstat, frame, op_ret, op_errno,
- op_ret >= 0 ? &local->buf : NULL, local->xdata);
- break;
- case GF_FOP_STAT:
- CRYPT_STACK_UNWIND(stat, frame, op_ret, op_errno,
- op_ret >= 0 ? &local->buf : NULL, local->xdata);
- break;
- case GF_FOP_LOOKUP:
- CRYPT_STACK_UNWIND(lookup, frame, op_ret, op_errno,
- op_ret >= 0 ? local->inode : NULL,
- op_ret >= 0 ? &local->buf : NULL, local->xdata,
- op_ret >= 0 ? &local->postbuf : NULL);
- break;
- case GF_FOP_READ:
- CRYPT_STACK_UNWIND(readv, frame, op_ret, op_errno, NULL, 0,
- op_ret >= 0 ? &local->buf : NULL, NULL, NULL);
- break;
- default:
- gf_log(this->name, GF_LOG_WARNING, "Improper file operation %d",
- local->fop);
- }
- if (local_xdata)
- dict_unref(local_xdata);
- if (local_inode)
- inode_unref(local_inode);
- return 0;
-}
-
-static int32_t
-crypt_stat_common_cbk(call_frame_t *frame, void *cookie, xlator_t *this,
- int32_t op_ret, int32_t op_errno, struct iatt *buf,
- dict_t *xdata)
-{
- crypt_local_t *local = frame->local;
-
- if (op_ret < 0)
- goto unwind;
- if (!IA_ISREG(buf->ia_type))
- goto unwind;
-
- local->buf = *buf;
- if (xdata)
- local->xdata = dict_ref(xdata);
-
- switch (local->fop) {
- case GF_FOP_FSTAT:
- STACK_WIND(frame, load_file_size, FIRST_CHILD(this),
- FIRST_CHILD(this)->fops->fgetxattr, local->fd,
- FSIZE_XATTR_PREFIX, NULL);
- break;
- case GF_FOP_STAT:
- STACK_WIND(frame, load_file_size, FIRST_CHILD(this),
- FIRST_CHILD(this)->fops->getxattr, local->loc,
- FSIZE_XATTR_PREFIX, NULL);
- break;
- default:
- gf_log(this->name, GF_LOG_WARNING, "Improper file operation %d",
- local->fop);
- }
- return 0;
-unwind:
- if (local->fd)
- fd_unref(local->fd);
- if (local->loc) {
- loc_wipe(local->loc);
- GF_FREE(local->loc);
- }
- switch (local->fop) {
- case GF_FOP_FSTAT:
- CRYPT_STACK_UNWIND(fstat, frame, op_ret, op_errno,
- op_ret >= 0 ? buf : NULL,
- op_ret >= 0 ? xdata : NULL);
- break;
- case GF_FOP_STAT:
- CRYPT_STACK_UNWIND(stat, frame, op_ret, op_errno,
- op_ret >= 0 ? buf : NULL,
- op_ret >= 0 ? xdata : NULL);
- break;
- default:
- gf_log(this->name, GF_LOG_WARNING, "Improper file operation %d",
- local->fop);
- }
- return 0;
-}
-
-static int32_t
-crypt_fstat(call_frame_t *frame, xlator_t *this, fd_t *fd, dict_t *xdata)
-{
- crypt_local_t *local;
-
- local = crypt_alloc_local(frame, this, GF_FOP_FSTAT);
- if (!local)
- goto error;
- local->fd = fd_ref(fd);
- STACK_WIND(frame, crypt_stat_common_cbk, FIRST_CHILD(this),
- FIRST_CHILD(this)->fops->fstat, fd, xdata);
- return 0;
-error:
- CRYPT_STACK_UNWIND(fstat, frame, -1, ENOMEM, NULL, NULL);
- return 0;
-}
-
-static int32_t
-crypt_stat(call_frame_t *frame, xlator_t *this, loc_t *loc, dict_t *xdata)
-{
- int32_t ret;
- crypt_local_t *local;
-
- local = crypt_alloc_local(frame, this, GF_FOP_STAT);
- if (!local)
- goto error;
- local->loc = GF_CALLOC(1, sizeof(loc_t), gf_crypt_mt_loc);
- if (!local->loc)
- goto error;
- ret = loc_copy(local->loc, loc);
- if (ret) {
- GF_FREE(local->loc);
- goto error;
- }
- STACK_WIND(frame, crypt_stat_common_cbk, FIRST_CHILD(this),
- FIRST_CHILD(this)->fops->stat, loc, xdata);
- return 0;
-error:
- CRYPT_STACK_UNWIND(stat, frame, -1, ENOMEM, NULL, NULL);
- return 0;
-}
-
-static int32_t
-crypt_lookup_cbk(call_frame_t *frame, void *cookie, xlator_t *this,
- int32_t op_ret, int32_t op_errno, inode_t *inode,
- struct iatt *buf, dict_t *xdata, struct iatt *postparent)
-{
- crypt_local_t *local = frame->local;
-
- if (op_ret < 0)
- goto unwind;
- if (!IA_ISREG(buf->ia_type))
- goto unwind;
-
- local->inode = inode_ref(inode);
- local->buf = *buf;
- local->postbuf = *postparent;
- if (xdata)
- local->xdata = dict_ref(xdata);
- gf_uuid_copy(local->loc->gfid, buf->ia_gfid);
-
- STACK_WIND(frame, load_file_size, FIRST_CHILD(this),
- FIRST_CHILD(this)->fops->getxattr, local->loc,
- FSIZE_XATTR_PREFIX, NULL);
- return 0;
-unwind:
- loc_wipe(local->loc);
- GF_FREE(local->loc);
- CRYPT_STACK_UNWIND(lookup, frame, op_ret, op_errno, inode, buf, xdata,
- postparent);
- return 0;
-}
-
-static int32_t
-crypt_lookup(call_frame_t *frame, xlator_t *this, loc_t *loc, dict_t *xdata)
-{
- int32_t ret;
- crypt_local_t *local;
-
- local = crypt_alloc_local(frame, this, GF_FOP_LOOKUP);
- if (!local)
- goto error;
- local->loc = GF_CALLOC(1, sizeof(loc_t), gf_crypt_mt_loc);
- if (!local->loc)
- goto error;
- ret = loc_copy(local->loc, loc);
- if (ret) {
- GF_FREE(local->loc);
- goto error;
- }
- gf_log(this->name, GF_LOG_DEBUG, "Lookup %s", loc->path);
- STACK_WIND(frame, crypt_lookup_cbk, FIRST_CHILD(this),
- FIRST_CHILD(this)->fops->lookup, loc, xdata);
- return 0;
-error:
- CRYPT_STACK_UNWIND(lookup, frame, -1, ENOMEM, NULL, NULL, NULL, NULL);
- return 0;
-}
-
-/*
- * for every regular directory entry find its real file size
- * and update stat's buf properly
- */
-static int32_t
-crypt_readdirp_cbk(call_frame_t *frame, void *cookie, xlator_t *this,
- int32_t op_ret, int32_t op_errno, gf_dirent_t *entries,
- dict_t *xdata)
-{
- gf_dirent_t *entry = NULL;
-
- if (op_ret < 0)
- goto unwind;
-
- list_for_each_entry(entry, (&entries->list), list)
- {
- data_t *data;
-
- if (!IA_ISREG(entry->d_stat.ia_type))
- continue;
- data = dict_get(entry->dict, FSIZE_XATTR_PREFIX);
- if (!data) {
- gf_log("crypt", GF_LOG_WARNING,
- "Regular file size of direntry not found");
- op_errno = EIO;
- op_ret = -1;
- break;
- }
- entry->d_stat.ia_size = data_to_uint64(data);
- }
-unwind:
- CRYPT_STACK_UNWIND(readdirp, frame, op_ret, op_errno, entries, xdata);
- return 0;
-}
-
-/*
- * ->readdirp() fills in-core inodes, so we need to set proper
- * file sizes for all directory entries of the parent @fd.
- * Actual updates take place in ->crypt_readdirp_cbk()
- */
-static int32_t
-crypt_readdirp(call_frame_t *frame, xlator_t *this, fd_t *fd, size_t size,
- off_t offset, dict_t *xdata)
-{
- int32_t ret = ENOMEM;
-
- if (!xdata) {
- xdata = dict_new();
- if (!xdata)
- goto error;
- } else
- dict_ref(xdata);
- /*
- * make sure that we'll have real file sizes at ->readdirp_cbk()
- */
- ret = dict_set(xdata, FSIZE_XATTR_PREFIX, data_from_uint64(0));
- if (ret) {
- dict_unref(xdata);
- ret = ENOMEM;
- goto error;
- }
- STACK_WIND(frame, crypt_readdirp_cbk, FIRST_CHILD(this),
- FIRST_CHILD(this)->fops->readdirp, fd, size, offset, xdata);
- dict_unref(xdata);
- return 0;
-error:
- CRYPT_STACK_UNWIND(readdirp, frame, -1, ret, NULL, NULL);
- return 0;
-}
-
-static int32_t
-crypt_access(call_frame_t *frame, xlator_t *this, loc_t *loc, int32_t mask,
- dict_t *xdata)
-{
- gf_log(this->name, GF_LOG_WARNING,
- "NFS mounts of encrypted volumes are unsupported");
- CRYPT_STACK_UNWIND(access, frame, -1, EPERM, NULL);
- return 0;
-}
-
-int32_t
-master_set_block_size(xlator_t *this, crypt_private_t *priv, dict_t *options)
-{
- uint64_t block_size = 0;
- struct master_cipher_info *master = get_master_cinfo(priv);
-
- if (options != NULL)
- GF_OPTION_RECONF("block-size", block_size, options, size_uint64, error);
- else
- GF_OPTION_INIT("block-size", block_size, size_uint64, error);
-
- switch (block_size) {
- case 512:
- master->m_block_bits = 9;
- break;
- case 1024:
- master->m_block_bits = 10;
- break;
- case 2048:
- master->m_block_bits = 11;
- break;
- case 4096:
- master->m_block_bits = 12;
- break;
- default:
- gf_log("crypt", GF_LOG_ERROR, "FATAL: unsupported block size %llu",
- (unsigned long long)block_size);
- goto error;
- }
- return 0;
-error:
- return -1;
-}
-
-int32_t
-master_set_alg(xlator_t *this, crypt_private_t *priv)
-{
- struct master_cipher_info *master = get_master_cinfo(priv);
- master->m_alg = AES_CIPHER_ALG;
- return 0;
-}
-
-int32_t
-master_set_mode(xlator_t *this, crypt_private_t *priv)
-{
- struct master_cipher_info *master = get_master_cinfo(priv);
- master->m_mode = XTS_CIPHER_MODE;
- return 0;
-}
-
-/*
- * set key size in bits to the master info
- * Pre-conditions: cipher mode in the master info is uptodate.
- */
-static int
-master_set_data_key_size(xlator_t *this, crypt_private_t *priv, dict_t *options)
-{
- int32_t ret;
- uint64_t key_size = 0;
- struct master_cipher_info *master = get_master_cinfo(priv);
-
- if (options != NULL)
- GF_OPTION_RECONF("data-key-size", key_size, options, uint64, error);
- else
- GF_OPTION_INIT("data-key-size", key_size, uint64, error);
-
- ret = data_cipher_algs[master->m_alg][master->m_mode].check_key(key_size);
- if (ret) {
- gf_log("crypt", GF_LOG_ERROR,
- "FATAL: wrong bin key size %llu for alg %d mode %d",
- (unsigned long long)key_size, (int)master->m_alg,
- (int)master->m_mode);
- goto error;
- }
- master->m_dkey_size = key_size;
- return 0;
-error:
- return -1;
-}
-
-static int
-is_hex(char *s)
-{
- return ('0' <= *s && *s <= '9') || ('a' <= *s && *s <= 'f');
-}
-
-static int
-parse_hex_buf(xlator_t *this, char *src, unsigned char *dst, int hex_size)
-{
- int i;
- int hex_byte = 0;
-
- for (i = 0; i < (hex_size / 2); i++) {
- if (!is_hex(src + i * 2) || !is_hex(src + i * 2 + 1)) {
- gf_log("crypt", GF_LOG_ERROR, "FATAL: not hex symbol in key");
- return -1;
- }
- if (sscanf(src + i * 2, "%2x", &hex_byte) != 1) {
- gf_log("crypt", GF_LOG_ERROR, "FATAL: can not parse hex key");
- return -1;
- }
- dst[i] = hex_byte & 0xff;
- }
- return 0;
-}
-
-/*
- * Parse options;
- * install master volume key
- */
-int32_t
-master_set_master_vol_key(xlator_t *this, crypt_private_t *priv)
-{
- int32_t ret;
- FILE *file = NULL;
-
- int32_t key_size;
- char *opt_key_file_pathname = NULL;
-
- unsigned char bin_buf[MASTER_VOL_KEY_SIZE];
- char hex_buf[2 * MASTER_VOL_KEY_SIZE];
-
- struct master_cipher_info *master = get_master_cinfo(priv);
- /*
- * extract master key passed via option
- */
- GF_OPTION_INIT("master-key", opt_key_file_pathname, path, bad_key);
-
- if (!opt_key_file_pathname) {
- gf_log(this->name, GF_LOG_ERROR, "FATAL: missing master key");
- return -1;
- }
- gf_log(this->name, GF_LOG_DEBUG, "handling file key %s",
- opt_key_file_pathname);
-
- file = fopen(opt_key_file_pathname, "r");
- if (file == NULL) {
- gf_log(this->name, GF_LOG_ERROR,
- "FATAL: can not open file with master key");
- return -1;
- }
- /*
- * extract hex key
- */
- key_size = fread(hex_buf, 1, sizeof(hex_buf), file);
- if (key_size < sizeof(hex_buf)) {
- gf_log(this->name, GF_LOG_ERROR, "FATAL: master key is too short");
- goto bad_key;
- }
- ret = parse_hex_buf(this, hex_buf, bin_buf, key_size);
- if (ret)
- goto bad_key;
- memcpy(master->m_key, bin_buf, MASTER_VOL_KEY_SIZE);
- memset(hex_buf, 0, sizeof(hex_buf));
- fclose(file);
-
- memset(bin_buf, 0, sizeof(bin_buf));
- return 0;
-bad_key:
- gf_log(this->name, GF_LOG_ERROR, "FATAL: bad master key");
- if (file)
- fclose(file);
- memset(bin_buf, 0, sizeof(bin_buf));
- return -1;
-}
-
-/*
- * Derive volume key for object-id authentication
- */
-int32_t
-master_set_nmtd_vol_key(xlator_t *this, crypt_private_t *priv)
-{
- return get_nmtd_vol_key(get_master_cinfo(priv));
-}
-
-int32_t
-crypt_init_xlator(xlator_t *this)
-{
- int32_t ret;
- crypt_private_t *priv = this->private;
-
- ret = master_set_alg(this, priv);
- if (ret)
- return ret;
- ret = master_set_mode(this, priv);
- if (ret)
- return ret;
- ret = master_set_block_size(this, priv, NULL);
- if (ret)
- return ret;
- ret = master_set_data_key_size(this, priv, NULL);
- if (ret)
- return ret;
- ret = master_set_master_vol_key(this, priv);
- if (ret)
- return ret;
- return master_set_nmtd_vol_key(this, priv);
-}
-
-static int32_t
-crypt_alloc_private(xlator_t *this)
-{
- this->private = GF_CALLOC(1, sizeof(crypt_private_t), gf_crypt_mt_priv);
- if (!this->private) {
- gf_log("crypt", GF_LOG_ERROR,
- "Can not allocate memory for private data");
- return ENOMEM;
- }
- return 0;
-}
-
-static void
-crypt_free_private(xlator_t *this)
-{
- crypt_private_t *priv = this->private;
- if (priv) {
- memset(priv, 0, sizeof(*priv));
- GF_FREE(priv);
- }
-}
-
-int32_t
-mem_acct_init(xlator_t *this)
-{
- int ret = -1;
-
- if (!this)
- return ret;
-
- ret = xlator_mem_acct_init(this, gf_crypt_mt_end);
-
- if (ret != 0) {
- gf_log(this->name, GF_LOG_ERROR,
- "Memory accounting init"
- "failed");
- return ret;
- }
-
- return ret;
-}
-
-int32_t
-reconfigure(xlator_t *this, dict_t *options)
-{
- int32_t ret = -1;
- crypt_private_t *priv = NULL;
-
- GF_VALIDATE_OR_GOTO("crypt", this, error);
- GF_VALIDATE_OR_GOTO(this->name, this->private, error);
- GF_VALIDATE_OR_GOTO(this->name, options, error);
-
- priv = this->private;
-
- ret = master_set_block_size(this, priv, options);
- if (ret) {
- gf_log("this->name", GF_LOG_ERROR, "Failed to reconfure block size");
- goto error;
- }
- ret = master_set_data_key_size(this, priv, options);
- if (ret) {
- gf_log("this->name", GF_LOG_ERROR, "Failed to reconfure data key size");
- goto error;
- }
- return 0;
-error:
- return ret;
-}
-
-int32_t
-init(xlator_t *this)
-{
- int32_t ret;
-
- if (!this->children || this->children->next) {
- gf_log("crypt", GF_LOG_ERROR,
- "FATAL: crypt should have exactly one child");
- return EINVAL;
- }
- if (!this->parents) {
- gf_log(this->name, GF_LOG_WARNING, "dangling volume. check volfile ");
- }
- ret = crypt_alloc_private(this);
- if (ret)
- return ret;
- ret = crypt_init_xlator(this);
- if (ret)
- goto error;
- this->local_pool = mem_pool_new(crypt_local_t, 64);
- if (!this->local_pool) {
- gf_log(this->name, GF_LOG_ERROR,
- "failed to create local_t's memory pool");
- ret = ENOMEM;
- goto error;
- }
- gf_log("crypt", GF_LOG_INFO, "crypt xlator loaded");
- return 0;
-error:
- crypt_free_private(this);
- return ret;
-}
-
-void
-fini(xlator_t *this)
-{
- crypt_free_private(this);
-}
-
-struct xlator_fops fops = {.readv = crypt_readv,
- .writev = crypt_writev,
- .truncate = crypt_truncate,
- .ftruncate = crypt_ftruncate,
- .setxattr = crypt_setxattr,
- .fsetxattr = crypt_fsetxattr,
- .link = crypt_link,
- .unlink = crypt_unlink,
- .rename = crypt_rename,
- .open = crypt_open,
- .create = crypt_create,
- .stat = crypt_stat,
- .fstat = crypt_fstat,
- .lookup = crypt_lookup,
- .readdirp = crypt_readdirp,
- .access = crypt_access};
-
-struct xlator_cbks cbks = {.forget = crypt_forget};
-
-struct volume_options options[] = {
- {.key = {"master-key"},
- .type = GF_OPTION_TYPE_PATH,
- .description =
- "Pathname of regular file which contains master volume key"},
- {
- .key = {"data-key-size"},
- .type = GF_OPTION_TYPE_SIZET,
- .description = "Data key size (bits)",
- .min = 256,
- .max = 512,
- .default_value = "256",
- },
- {.key = {"block-size"},
- .type = GF_OPTION_TYPE_SIZET,
- .description = "Atom size (bits)",
- .min = 512,
- .max = 4096,
- .default_value = "4096"},
- {.key = {NULL}},
-};
-
-/*
- Local variables:
- c-indentation-style: "K&R"
- mode-name: "LC"
- c-basic-offset: 8
- tab-width: 8
- fill-column: 80
- scroll-step: 1
- End:
-*/
generated by cgit (git 2.34.1) at 2025-11-04 15:10:15 +0000