TheCloud/fuse-overlayfs
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main: reload directory only when necessary

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Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
This commit is contained in:
Giuseppe Scrivano 2019-07-20 12:42:15 +02:00
parent 216ef5ef48
commit 58e9351619
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GPG Key ID: E4730F97F60286ED
1 changed files with 16 additions and 8 deletions
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24
main.c
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@ -1383,6 +1383,14 @@ load_dir (struct ovl_data *lo, struct ovl_node *n, struct ovl_layer *layer, char
return n;
}
static struct ovl_node *
reload_dir (struct ovl_data *lo, struct ovl_node *node)
{
if (! node->loaded)
node = load_dir (lo, node, node->layer, node->path, node->name);
return node;
}
static void
free_layers (struct ovl_layer *layers)
{
@ -1678,7 +1686,7 @@ ovl_opendir (fuse_req_t req, fuse_ino_t ino, struct fuse_file_info *fi)
goto out_errno;
}
node = load_dir (lo, node, node->layer, node->path, node->name);
node = reload_dir (lo, node);
if (node == NULL)
goto out_errno;
@ -1724,7 +1732,7 @@ create_missing_whiteouts (struct ovl_data *lo, struct ovl_node *node, const char
if (! node_dirp (node))
return 0;
node = load_dir (lo, node, node->layer, node->path, node->name);
node = reload_dir (lo, node);
if (node == NULL)
return -1;
@ -1783,7 +1791,7 @@ create_missing_whiteouts (struct ovl_data *lo, struct ovl_node *node, const char
{
char c[PATH_MAX];
n = load_dir (lo, n, n->layer, n->path, n->name);
n = reload_dir (lo, n);
if (n == NULL)
return -1;
@ -2516,7 +2524,7 @@ do_rm (fuse_req_t req, fuse_ino_t parent, const char *name, bool dirp)
size_t c;
/* Re-load the directory. */
node = load_dir (lo, node, node->layer, node->path, node->name);
node = reload_dir (lo, node);
if (node == NULL)
{
fuse_reply_err (req, errno);
@ -3418,7 +3426,7 @@ ovl_rename_exchange (fuse_req_t req, fuse_ino_t parent, const char *name,
if (node_dirp (node))
{
node = load_dir (lo, node, node->layer, node->path, node->name);
node = reload_dir (lo, node);
if (node == NULL)
{
fuse_reply_err (req, errno);
@ -3550,7 +3558,7 @@ ovl_rename_direct (fuse_req_t req, fuse_ino_t parent, const char *name,
if (node_dirp (node))
{
node = load_dir (lo, node, node->layer, node->path, node->name);
node = reload_dir (lo, node);
if (node == NULL)
{
fuse_reply_err (req, errno);
@ -3610,7 +3618,7 @@ ovl_rename_direct (fuse_req_t req, fuse_ino_t parent, const char *name,
if (!destnode->whiteout && node_dirp (destnode))
{
destnode = load_dir (lo, destnode, destnode->layer, destnode->path, destnode->name);
destnode = reload_dir (lo, destnode);
if (destnode == NULL)
goto error;
@ -3817,7 +3825,7 @@ hide_all (struct ovl_data *lo, struct ovl_node *node)
struct ovl_node **nodes;
size_t i, nodes_size;
node = load_dir (lo, node, node->layer, node->path, node->name);
node = reload_dir (lo, node);
if (node == NULL)
return -1;