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authorAmar Tumballi <amar@gluster.com>2009-11-30 01:18:41 +0000
committerAnand V. Avati <avati@dev.gluster.com>2009-12-01 10:02:56 -0800
commit7bb52eb192f9541e70bf48a206c2d78b5dbb5cb2 (patch)
tree3396f4ed8839ebb4936938bf304546bf27ce3edf /xlators/features/trash
parent056e3e7a56a24291c6f07b9ef572ee8c8ff7c700 (diff)
trash_rename 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.c258
1 files changed, 258 insertions, 0 deletions
diff --git a/xlators/features/trash/src/trash.c b/xlators/features/trash/src/trash.c
index 89cb122..ad8d1a7 100644
--- a/xlators/features/trash/src/trash.c
+++ b/xlators/features/trash/src/trash.c
@@ -154,6 +154,11 @@ out:
return 0;
}
+int32_t
+trash_rename_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);
int32_t
trash_unlink_rename_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
@@ -227,6 +232,18 @@ trash_unlink_rename_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
}
+int
+trash_common_rename_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+ int32_t op_ret, int32_t op_errno, struct stat *stbuf,
+ struct stat *preoldparent, struct stat *postoldparent,
+ struct stat *prenewparent, struct stat *postnewparent)
+{
+ TRASH_STACK_UNWIND (frame, op_ret, op_errno, stbuf, preoldparent,
+ postoldparent, prenewparent, postnewparent);
+ return 0;
+}
+
+
int32_t
trash_unlink_stat_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
int32_t op_ret, int32_t op_errno, struct stat *buf)
@@ -278,6 +295,246 @@ fail:
}
+int32_t
+trash_rename_rename_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+ int32_t op_ret, int32_t op_errno, struct stat *buf,
+ struct stat *preoldparent, struct stat *postoldparent,
+ struct stat *prenewparent, struct stat *postnewparent)
+{
+ 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);
+
+ /* check for the errno, if its ENOENT create directory and call
+ * rename later
+ */
+ 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_rename_mkdir_cbk, tmp_path,
+ this->children->xlator,
+ this->children->xlator->fops->mkdir,
+ &tmp_loc, 0755);
+
+ free (tmp_str);
+ return 0;
+ }
+
+ if ((op_ret == -1) && (op_errno == ENOTDIR)) {
+ gf_log (this->name, GF_LOG_DEBUG,
+ "target(%s) exists, cannot keep the dest entry(%s): "
+ "renaming", local->newpath, local->origpath);
+ } else if ((op_ret == -1) && (op_errno == EISDIR)) {
+ gf_log (this->name, GF_LOG_DEBUG,
+ "target(%s) exists as a directory, cannot keep the "
+ "copy (%s), renaming", local->newpath, local->origpath);
+ }
+
+ STACK_WIND (frame, trash_common_rename_cbk,
+ this->children->xlator,
+ this->children->xlator->fops->rename, &local->loc,
+ &local->newloc);
+
+ return 0;
+}
+
+
+int32_t
+trash_rename_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;
+ loc_t tmp_loc = {0,};
+
+ local = frame->local;
+ 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;
+
+ 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;
+
+ /* TODO: create the directory with proper permissions */
+ STACK_WIND_COOKIE (frame, trash_rename_mkdir_cbk,
+ tmp_path, this->children->xlator,
+ this->children->xlator->fops->mkdir,
+ &tmp_loc, 0755);
+ }
+
+ goto out;
+ }
+
+ dir_name = dirname (tmp_str);
+ if (strcmp ((char*)cookie, dir_name) == 0) {
+ tmp_loc.path = local->newpath;
+
+ STACK_WIND (frame, trash_rename_rename_cbk,
+ this->children->xlator,
+ this->children->xlator->fops->rename,
+ &local->newloc, &tmp_loc);
+ }
+
+out:
+ free (cookie); /* strdup (dir_name) was sent here :) */
+ free (tmp_str);
+
+ return 0;
+}
+
+int32_t
+trash_rename_lookup_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+ int32_t op_ret, int32_t op_errno, inode_t *inode,
+ struct stat *buf, dict_t *xattr,
+ struct stat *postparent)
+{
+ trash_private_t *priv = NULL;
+ trash_local_t *local = NULL;
+ loc_t tmp_loc = {0,};
+
+ local = frame->local;
+ priv = this->private;
+
+ if (op_ret == -1) {
+ STACK_WIND (frame, trash_common_rename_cbk,
+ this->children->xlator,
+ this->children->xlator->fops->rename,
+ &local->loc, &local->newloc);
+ return 0;
+ }
+ if ((buf->st_size == 0) ||
+ (buf->st_size > priv->max_trash_file_size)) {
+ /* if the file is too big or zero, just unlink it */
+
+ if (buf->st_size > priv->max_trash_file_size) {
+ gf_log (this->name, GF_LOG_DEBUG,
+ "%s: file size too big (%"GF_PRI_SIZET") to "
+ "move into trash directory",
+ local->newloc.path, buf->st_size);
+ }
+
+ STACK_WIND (frame, trash_common_rename_cbk,
+ this->children->xlator,
+ this->children->xlator->fops->rename,
+ &local->loc, &local->newloc);
+ return 0;
+ }
+
+ tmp_loc.path = local->newpath;
+
+ STACK_WIND (frame, trash_rename_rename_cbk,
+ this->children->xlator,
+ this->children->xlator->fops->rename,
+ &local->newloc, &tmp_loc);
+
+ return 0;
+}
+
+
+int32_t
+trash_rename (call_frame_t *frame, xlator_t *this, loc_t *oldloc,
+ loc_t *newloc)
+{
+ trash_elim_pattern_t *trav = NULL;
+ trash_private_t *priv = NULL;
+ trash_local_t *local = NULL;
+ struct tm *tm = NULL;
+ char timestr[256] = {0,};
+ time_t utime = 0;
+ int32_t match = 0;
+
+ priv = this->private;
+ if (priv->eliminate) {
+ trav = priv->eliminate;
+ while (trav) {
+ if (fnmatch(trav->pattern, newloc->name, 0) == 0) {
+ match++;
+ break;
+ }
+ trav = trav->next;
+ }
+ }
+
+ if ((strncmp (oldloc->path, priv->trash_dir,
+ strlen (priv->trash_dir)) == 0) || match) {
+ /* Trying to rename from the trash dir,
+ do the actual rename */
+ STACK_WIND (frame, trash_common_rename_cbk,
+ this->children->xlator,
+ this->children->xlator->fops->rename,
+ oldloc, newloc);
+
+ return 0;
+ }
+
+ local = CALLOC (1, sizeof (trash_local_t));
+ if (!local) {
+ gf_log (this->name, GF_LOG_ERROR, "out of memory");
+ TRASH_STACK_UNWIND (frame, -1, ENOMEM,
+ NULL, NULL, NULL, NULL, NULL);
+ return 0;
+ }
+
+ frame->local = local;
+ loc_copy (&local->loc, oldloc);
+
+ loc_copy (&local->newloc, newloc);
+
+ strcpy (local->origpath, newloc->path);
+ strcpy (local->newpath, priv->trash_dir);
+ strcat (local->newpath, newloc->path);
+
+ {
+ /* append timestamp to file name */
+ /* TODO: can we make it optional? */
+ utime = time (NULL);
+ tm = localtime (&utime);
+ strftime (timestr, 256, ".%Y-%m-%d-%H%M%S", tm);
+ strcat (local->newpath, timestr);
+ }
+
+ /* Send a lookup call on newloc, to ensure we are not
+ overwriting */
+ STACK_WIND (frame, trash_rename_lookup_cbk,
+ this->children->xlator,
+ this->children->xlator->fops->lookup, newloc, 0);
+
+ return 0;
+}
int32_t
trash_unlink (call_frame_t *frame, xlator_t *this, loc_t *loc)
@@ -467,6 +724,7 @@ fini (xlator_t *this)
struct xlator_fops fops = {
.unlink = trash_unlink,
+ .rename = trash_rename,
};
struct xlator_mops mops = {