158 lines
5.3 KiB
Diff
158 lines
5.3 KiB
Diff
--- a/fs/mini_fo/aux.c
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+++ b/fs/mini_fo/aux.c
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@@ -86,8 +86,10 @@ int get_neg_sto_dentry(dentry_t *dentry)
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len = dentry->d_name.len;
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name = dentry->d_name.name;
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+ mutex_lock(&dtohd2(dentry->d_parent)->d_inode->i_mutex);
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dtohd2(dentry) =
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lookup_one_len(name, dtohd2(dentry->d_parent), len);
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+ mutex_unlock(&dtohd2(dentry->d_parent)->d_inode->i_mutex);
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out:
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return err;
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@@ -426,7 +428,9 @@ int build_sto_structure(dentry_t *dir, d
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const unsigned char *name;
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len = dtohd(dentry)->d_name.len;
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name = dtohd(dentry)->d_name.name;
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+ mutex_lock(&dtohd2(dir)->d_inode->i_mutex);
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hidden_sto_dentry = lookup_one_len(name, dtohd2(dir), len);
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+ mutex_unlock(&dtohd2(dir)->d_inode->i_mutex);
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dtohd2(dentry) = hidden_sto_dentry;
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}
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--- a/fs/mini_fo/inode.c
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+++ b/fs/mini_fo/inode.c
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@@ -113,17 +113,23 @@ mini_fo_lookup(inode_t *dir, dentry_t *d
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hidden_dir_dentry = hidden_dentry->d_parent;
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kfree(bpath);
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}
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- else if(hidden_dir_dentry && hidden_dir_dentry->d_inode)
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+ else if(hidden_dir_dentry && hidden_dir_dentry->d_inode) {
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+ mutex_lock(&hidden_dir_dentry->d_inode->i_mutex);
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hidden_dentry =
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lookup_one_len(name, hidden_dir_dentry, namelen);
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- else
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+ mutex_unlock(&hidden_dir_dentry->d_inode->i_mutex);
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+ } else {
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hidden_dentry = NULL;
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+ }
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- if(hidden_sto_dir_dentry && hidden_sto_dir_dentry->d_inode)
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+ if(hidden_sto_dir_dentry && hidden_sto_dir_dentry->d_inode) {
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+ mutex_lock(&hidden_sto_dir_dentry->d_inode->i_mutex);
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hidden_sto_dentry =
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lookup_one_len(name, hidden_sto_dir_dentry, namelen);
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- else
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+ mutex_unlock(&hidden_sto_dir_dentry->d_inode->i_mutex);
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+ } else {
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hidden_sto_dentry = NULL;
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+ }
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/* catch error in lookup */
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if (IS_ERR(hidden_dentry) || IS_ERR(hidden_sto_dentry)) {
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@@ -553,9 +559,11 @@ mini_fo_rmdir(inode_t *dir, dentry_t *de
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#endif
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/* Delete an old WOL file contained in the storage dir */
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+ mutex_lock(&hidden_sto_dentry->d_inode->i_mutex);
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meta_dentry = lookup_one_len(META_FILENAME,
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hidden_sto_dentry,
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strlen(META_FILENAME));
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+ mutex_unlock(&hidden_sto_dentry->d_inode->i_mutex);
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if(meta_dentry->d_inode) {
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err = vfs_unlink(hidden_sto_dentry->d_inode, meta_dentry);
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dput(meta_dentry);
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@@ -643,9 +651,11 @@ mini_fo_rmdir(inode_t *dir, dentry_t *de
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#endif
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/* Delete an old WOL file contained in the storage dir */
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+ mutex_lock(&hidden_sto_dentry->d_inode->i_mutex);
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meta_dentry = lookup_one_len(META_FILENAME,
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hidden_sto_dentry,
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strlen(META_FILENAME));
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+ mutex_unlock(&hidden_sto_dentry->d_inode->i_mutex);
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if(meta_dentry->d_inode) {
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/* is this necessary? dget(meta_dentry); */
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err = vfs_unlink(hidden_sto_dentry->d_inode,
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@@ -688,9 +698,11 @@ mini_fo_rmdir(inode_t *dir, dentry_t *de
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#endif
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/* Delete an old WOL file contained in the storage dir */
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+ mutex_lock(&hidden_sto_dentry->d_inode->i_mutex);
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meta_dentry = lookup_one_len(META_FILENAME,
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hidden_sto_dentry,
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strlen(META_FILENAME));
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+ mutex_unlock(&hidden_sto_dentry->d_inode->i_mutex);
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if(meta_dentry->d_inode) {
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/* is this necessary? dget(meta_dentry); */
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err = vfs_unlink(hidden_sto_dentry->d_inode,
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--- a/fs/mini_fo/meta.c
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+++ b/fs/mini_fo/meta.c
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@@ -43,9 +43,11 @@ int meta_build_lists(dentry_t *dentry)
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/* might there be a META-file? */
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if(dtohd2(dentry) && dtohd2(dentry)->d_inode) {
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+ mutex_lock(&dtohd2(dentry)->d_inode->i_mutex);
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meta_dentry = lookup_one_len(META_FILENAME,
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dtohd2(dentry),
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strlen(META_FILENAME));
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+ mutex_unlock(&dtohd2(dentry)->d_inode->i_mutex);
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if(!meta_dentry->d_inode) {
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dput(meta_dentry);
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goto out_ok;
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@@ -426,8 +428,11 @@ int meta_write_d_entry(dentry_t *dentry,
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goto out;
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}
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}
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+
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+ mutex_lock(&dtohd2(dentry)->d_inode->i_mutex);
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meta_dentry = lookup_one_len(META_FILENAME,
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dtohd2(dentry), strlen (META_FILENAME));
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+ mutex_unlock(&dtohd2(dentry)->d_inode->i_mutex);
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/* We need to create a META-file */
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if(!meta_dentry->d_inode) {
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@@ -527,9 +532,13 @@ int meta_write_r_entry(dentry_t *dentry,
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goto out;
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}
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}
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+
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+ mutex_lock(&dtohd2(dentry)->d_inode->i_mutex);
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meta_dentry = lookup_one_len(META_FILENAME,
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dtohd2(dentry),
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strlen (META_FILENAME));
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+ mutex_unlock(&dtohd2(dentry)->d_inode->i_mutex);
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+
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if(!meta_dentry->d_inode) {
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/* We need to create a META-file */
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#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
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@@ -641,9 +650,13 @@ int meta_sync_d_list(dentry_t *dentry, i
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goto out;
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}
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}
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+
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+ mutex_lock(&dtohd2(dentry)->d_inode->i_mutex);
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meta_dentry = lookup_one_len(META_FILENAME,
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dtohd2(dentry),
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strlen(META_FILENAME));
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+ mutex_unlock(&dtohd2(dentry)->d_inode->i_mutex);
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+
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if(!meta_dentry->d_inode) {
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/* We need to create a META-file */
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#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
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@@ -784,9 +797,13 @@ int meta_sync_r_list(dentry_t *dentry, i
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goto out;
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}
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}
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+
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+ mutex_lock(&dtohd2(dentry)->d_inode->i_mutex);
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meta_dentry = lookup_one_len(META_FILENAME,
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dtohd2(dentry),
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strlen(META_FILENAME));
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+ mutex_unlock(&dtohd2(dentry)->d_inode->i_mutex);
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+
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if(!meta_dentry->d_inode) {
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/* We need to create a META-file */
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#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
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