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authorAmar Tumballi <amar@gluster.com>2009-11-30 01:20:20 +0000
committerAnand V. Avati <avati@dev.gluster.com>2009-12-01 10:03:02 -0800
commitade63327d7beaf6f8458aba9f8980e15016b6f31 (patch)
tree03b367fe2a84a69d1900d6e49664bc010cc6a92f /xlators/features/trash
parent4f7886034742709b285499aa0052fdb21e9c42f6 (diff)
trash_ftruncate fop added
Signed-off-by: Amar Tumballi <amar@gluster.com> Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 142 (enhance features/trash translator so it can work on client side too..) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=142
Diffstat (limited to 'xlators/features/trash')
-rw-r--r--xlators/features/trash/src/trash.c357
1 files changed, 357 insertions, 0 deletions
diff --git a/xlators/features/trash/src/trash.c b/xlators/features/trash/src/trash.c
index 2efca78..378c579 100644
--- a/xlators/features/trash/src/trash.c
+++ b/xlators/features/trash/src/trash.c
@@ -26,6 +26,12 @@
int32_t
+trash_ftruncate_readv_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+ int32_t op_ret, int32_t op_errno,
+ struct iovec *vector, int32_t count,
+ struct stat *stbuf, struct iobref *iobuf);
+
+int32_t
trash_truncate_writev_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
int32_t op_ret, int32_t op_errno,
struct stat *prebuf, struct stat *postbuf);
@@ -1048,6 +1054,356 @@ out:
return 0;
}
+int32_t
+trash_ftruncate_unlink_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+ int32_t op_ret, int32_t op_errno,
+ struct stat *preparent, struct stat *postparent)
+{
+ trash_local_t *local = NULL;
+
+ local = frame->local;
+
+ if (op_ret == -1) {
+ gf_log (this->name, GF_LOG_DEBUG,
+ "%s: failed to unlink new file: %s",
+ local->newloc.path, strerror(op_errno));
+
+ }
+
+ STACK_WIND (frame, trash_common_unwind_buf_cbk,
+ FIRST_CHILD(this), FIRST_CHILD(this)->fops->ftruncate,
+ local->fd, local->fop_offset);
+
+ return 0;
+}
+
+int32_t
+trash_ftruncate_writev_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+ int32_t op_ret, int32_t op_errno,
+ struct stat *prebuf, struct stat *postbuf)
+{
+ trash_local_t *local = NULL;
+
+ local = frame->local;
+
+ if (op_ret == -1) {
+ STACK_WIND (frame, trash_ftruncate_unlink_cbk,
+ FIRST_CHILD(this), FIRST_CHILD(this)->fops->unlink,
+ &local->newloc);
+ return 0;
+ }
+
+ if (local->cur_offset < local->fsize) {
+ local->cur_offset += GF_BLOCK_READV_SIZE;
+ STACK_WIND (frame, trash_ftruncate_readv_cbk,
+ FIRST_CHILD(this), FIRST_CHILD(this)->fops->readv,
+ local->fd, (size_t)GF_BLOCK_READV_SIZE,
+ local->cur_offset);
+ return 0;
+ }
+
+ STACK_WIND (frame, trash_common_unwind_buf_cbk, FIRST_CHILD(this),
+ FIRST_CHILD(this)->fops->ftruncate, local->fd,
+ local->fop_offset);
+
+ return 0;
+}
+
+
+int32_t
+trash_ftruncate_readv_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+ int32_t op_ret, int32_t op_errno,
+ struct iovec *vector, int32_t count,
+ struct stat *stbuf, struct iobref *iobuf)
+{
+ trash_local_t *local = NULL;
+
+ local = frame->local;
+ local->fsize = stbuf->st_size;
+
+ if (op_ret == -1) {
+ STACK_WIND (frame, trash_ftruncate_unlink_cbk,
+ FIRST_CHILD(this), FIRST_CHILD(this)->fops->unlink,
+ &local->newloc);
+ return 0;
+ }
+
+ STACK_WIND (frame, trash_ftruncate_writev_cbk,
+ FIRST_CHILD(this), FIRST_CHILD(this)->fops->writev,
+ local->newfd, vector, count, local->cur_offset, NULL);
+
+ return 0;
+}
+
+
+int32_t
+trash_ftruncate_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 stat *buf,
+ struct stat *preparent, struct stat *postparent)
+{
+ trash_local_t *local = NULL;
+ char *tmp_str = NULL;
+ char *dir_name = NULL;
+ char *tmp_path = NULL;
+ loc_t tmp_loc = {0,};
+
+ local = frame->local;
+
+ if ((op_ret == -1) && (op_errno == ENOENT)) {
+ tmp_str = strdup (local->newpath);
+ if (!tmp_str) {
+ gf_log (this->name, GF_LOG_DEBUG, "out of memory");
+ }
+ dir_name = dirname (tmp_str);
+
+ tmp_path = strdup (dir_name);
+ if (!tmp_path) {
+ gf_log (this->name, GF_LOG_DEBUG, "out of memory");
+ }
+ tmp_loc.path = tmp_path;
+
+ /* TODO: create the directory with proper permissions */
+ STACK_WIND_COOKIE (frame, trash_truncate_mkdir_cbk,
+ tmp_path, FIRST_CHILD(this),
+ FIRST_CHILD(this)->fops->mkdir,
+ &tmp_loc, 0755);
+ free (tmp_str);
+ return 0;
+ }
+
+ if (op_ret == -1) {
+ STACK_WIND (frame, trash_common_unwind_buf_cbk,
+ FIRST_CHILD(this),
+ FIRST_CHILD(this)->fops->ftruncate,
+ local->fd, local->fop_offset);
+ return 0;
+ }
+
+ STACK_WIND (frame, trash_ftruncate_readv_cbk, FIRST_CHILD(this),
+ FIRST_CHILD(this)->fops->readv, local->fd,
+ (size_t)GF_BLOCK_READV_SIZE, local->cur_offset);
+
+ return 0;
+}
+
+
+int32_t
+trash_ftruncate_mkdir_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+ int32_t op_ret, int32_t op_errno, inode_t *inode,
+ struct stat *stbuf, struct stat *preparent,
+ struct stat *postparent)
+{
+ trash_local_t *local = NULL;
+ char *tmp_str = NULL;
+ char *tmp_path = NULL;
+ char *tmp_dirname = NULL;
+ char *dir_name = NULL;
+ int32_t count = 0;
+ int32_t flags = 0;
+ int32_t loop_count = 0;
+ int i = 0;
+ loc_t tmp_loc = {0,};
+
+ local = frame->local;
+ if (!local)
+ return 0;
+
+ loop_count = local->loop_count;
+
+ tmp_str = strdup (local->newpath);
+ if (!tmp_str) {
+ gf_log (this->name, GF_LOG_DEBUG, "out of memory");
+ }
+
+ if ((op_ret == -1) && (op_errno == ENOENT)) {
+ tmp_dirname = strchr (tmp_str, '/');
+ while (tmp_dirname) {
+ count = tmp_dirname - tmp_str;
+ if (count == 0)
+ count = 1;
+ i++;
+ if (i > loop_count)
+ break;
+ tmp_dirname = strchr (tmp_str + count + 1, '/');
+ }
+ tmp_path = strndup (local->newpath, count);
+ if (!tmp_path) {
+ gf_log (this->name, GF_LOG_DEBUG, "out of memory");
+ }
+ tmp_loc.path = tmp_path;
+ STACK_WIND_COOKIE (frame, trash_ftruncate_mkdir_cbk,
+ tmp_path, this->children->xlator,
+ this->children->xlator->fops->mkdir,
+ &tmp_loc, 0755);
+
+ goto out;
+ }
+
+ if (op_ret == 0) {
+ dir_name = dirname (tmp_str);
+ if (strcmp ((char*)cookie, dir_name) == 0) {
+ flags = O_CREAT|O_EXCL|O_WRONLY;
+
+ //Call create again once directory structure is created.
+ STACK_WIND (frame, trash_ftruncate_create_cbk,
+ FIRST_CHILD(this),
+ FIRST_CHILD(this)->fops->create,
+ &local->newloc, flags,
+ local->loc.inode->st_mode, local->newfd);
+ goto out;
+ }
+ }
+
+ LOCK (&frame->lock);
+ {
+ loop_count = ++local->loop_count;
+ }
+ UNLOCK (&frame->lock);
+ tmp_dirname = strchr (tmp_str, '/');
+ while (tmp_dirname) {
+ count = tmp_dirname - tmp_str;
+ if (count == 0)
+ count = 1;
+
+ i++;
+ if ((i > loop_count) || (count > PATH_MAX))
+ break;
+ tmp_dirname = strchr (tmp_str + count + 1, '/');
+ }
+ tmp_path = strndup (local->newpath, count);
+ if (!tmp_path) {
+ gf_log (this->name, GF_LOG_DEBUG, "out of memory");
+ }
+ tmp_loc.path = tmp_path;
+
+ STACK_WIND_COOKIE (frame, trash_ftruncate_mkdir_cbk, tmp_path,
+ this->children->xlator,
+ this->children->xlator->fops->mkdir,
+ &tmp_loc, 0755);
+
+out:
+ free (cookie); /* strdup (dir_name) was sent here :) */
+ free (tmp_str);
+
+ return 0;
+}
+
+
+int32_t
+trash_ftruncate_fstat_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+ int32_t op_ret, int32_t op_errno, struct stat *buf)
+{
+ trash_private_t *priv = NULL;
+ trash_local_t *local = NULL;
+
+ priv = this->private;
+ local = frame->local;
+
+ if (op_ret == -1) {
+ gf_log (this->name, GF_LOG_DEBUG,
+ "%s: %s",local->newloc.path, strerror(op_errno));
+
+ TRASH_STACK_UNWIND (frame, -1, op_errno, buf, NULL);
+ return 0;
+ }
+ if ((buf->st_size == 0) || (buf->st_size > priv->max_trash_file_size))
+ {
+ STACK_WIND (frame, trash_common_unwind_buf_cbk,
+ this->children->xlator,
+ this->children->xlator->fops->ftruncate,
+ local->fd, local->fop_offset);
+ return 0;
+ }
+
+
+ STACK_WIND (frame, trash_ftruncate_create_cbk, FIRST_CHILD(this),
+ FIRST_CHILD(this)->fops->create, &local->newloc,
+ ( O_CREAT | O_EXCL | O_WRONLY ),
+ local->loc.inode->st_mode, local->newfd);
+
+ return 0;
+}
+
+int32_t
+trash_ftruncate (call_frame_t *frame, xlator_t *this, fd_t *fd, off_t offset)
+{
+ trash_elim_pattern_t *trav = NULL;
+ trash_private_t *priv = NULL;
+ trash_local_t *local = NULL;
+ dentry_t *dir_entry = NULL;
+ struct tm *tm = NULL;
+ char *pathbuf = NULL;
+ inode_t *newinode = NULL;
+ time_t utime = 0;
+ char timestr[256];
+ int32_t retval = 0;
+ int32_t match = 0;
+
+ priv = this->private;
+
+ dir_entry = __dentry_search_arbit (fd->inode);
+ retval = inode_path (fd->inode, NULL, &pathbuf);
+
+ if (priv->eliminate) {
+ trav = priv->eliminate;
+ while (trav) {
+ if (fnmatch(trav->pattern, dir_entry->name, 0) == 0) {
+ match++;
+ break;
+ }
+ trav = trav->next;
+ }
+ }
+
+ if ((strncmp (pathbuf, priv->trash_dir,
+ strlen (priv->trash_dir)) == 0) ||
+ (offset >= priv->max_trash_file_size) ||
+ (!retval) ||
+ match) {
+ STACK_WIND (frame, trash_common_unwind_buf_cbk,
+ FIRST_CHILD(this),
+ FIRST_CHILD(this)->fops->ftruncate,
+ fd, offset);
+ return 0;
+ }
+
+ local = CALLOC (1, sizeof (trash_local_t));
+ if (!local) {
+ gf_log (this->name, GF_LOG_DEBUG, "out of memory");
+ TRASH_STACK_UNWIND (frame, -1, ENOMEM, NULL, NULL);
+ return 0;
+ }
+
+ utime = time (NULL);
+ tm = localtime (&utime);
+ strftime (timestr, 256, ".%Y-%m-%d-%H%M%S", tm);
+
+ strcpy (local->newpath, priv->trash_dir);
+ strcat (local->newpath, pathbuf);
+ strcat (local->newpath, timestr);
+
+ local->fd = fd_ref (fd);
+ newinode = inode_new (fd->inode->table);
+ local->newfd = fd_create (newinode, frame->root->pid);
+ frame->local=local;
+
+ local->newloc.inode = newinode;
+ local->newloc.path = local->newpath;
+
+ local->loc.inode = inode_ref (fd->inode);
+ local->loc.ino = fd->inode->ino;
+ local->loc.path = pathbuf;
+
+ local->fop_offset = offset;
+ local->cur_offset = offset;
+
+ STACK_WIND (frame, trash_ftruncate_fstat_cbk, this->children->xlator,
+ this->children->xlator->fops->fstat, fd);
+
+ return 0;
+}
+
/**
* trash_init -
*/
@@ -1166,6 +1522,7 @@ struct xlator_fops fops = {
.unlink = trash_unlink,
.rename = trash_rename,
.truncate = trash_truncate,
+ .ftruncate = trash_ftruncate,
};
struct xlator_mops mops = {