Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/fs/jfs/acl.c b/fs/jfs/acl.c
new file mode 100644
index 0000000..8d2a9ab
--- /dev/null
+++ b/fs/jfs/acl.c
@@ -0,0 +1,234 @@
+/*
+ * Copyright (C) International Business Machines Corp., 2002-2004
+ * Copyright (C) Andreas Gruenbacher, 2001
+ * Copyright (C) Linus Torvalds, 1991, 1992
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
+ * the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <linux/sched.h>
+#include <linux/fs.h>
+#include <linux/quotaops.h>
+#include "jfs_incore.h"
+#include "jfs_xattr.h"
+#include "jfs_acl.h"
+
+static struct posix_acl *jfs_get_acl(struct inode *inode, int type)
+{
+ struct posix_acl *acl;
+ char *ea_name;
+ struct jfs_inode_info *ji = JFS_IP(inode);
+ struct posix_acl **p_acl;
+ int size;
+ char *value = NULL;
+
+ switch(type) {
+ case ACL_TYPE_ACCESS:
+ ea_name = XATTR_NAME_ACL_ACCESS;
+ p_acl = &ji->i_acl;
+ break;
+ case ACL_TYPE_DEFAULT:
+ ea_name = XATTR_NAME_ACL_DEFAULT;
+ p_acl = &ji->i_default_acl;
+ break;
+ default:
+ return ERR_PTR(-EINVAL);
+ }
+
+ if (*p_acl != JFS_ACL_NOT_CACHED)
+ return posix_acl_dup(*p_acl);
+
+ size = __jfs_getxattr(inode, ea_name, NULL, 0);
+
+ if (size > 0) {
+ value = kmalloc(size, GFP_KERNEL);
+ if (!value)
+ return ERR_PTR(-ENOMEM);
+ size = __jfs_getxattr(inode, ea_name, value, size);
+ }
+
+ if (size < 0) {
+ if (size == -ENODATA) {
+ *p_acl = NULL;
+ acl = NULL;
+ } else
+ acl = ERR_PTR(size);
+ } else {
+ acl = posix_acl_from_xattr(value, size);
+ if (!IS_ERR(acl))
+ *p_acl = posix_acl_dup(acl);
+ }
+ if (value)
+ kfree(value);
+ return acl;
+}
+
+static int jfs_set_acl(struct inode *inode, int type, struct posix_acl *acl)
+{
+ char *ea_name;
+ struct jfs_inode_info *ji = JFS_IP(inode);
+ struct posix_acl **p_acl;
+ int rc;
+ int size = 0;
+ char *value = NULL;
+
+ if (S_ISLNK(inode->i_mode))
+ return -EOPNOTSUPP;
+
+ switch(type) {
+ case ACL_TYPE_ACCESS:
+ ea_name = XATTR_NAME_ACL_ACCESS;
+ p_acl = &ji->i_acl;
+ break;
+ case ACL_TYPE_DEFAULT:
+ ea_name = XATTR_NAME_ACL_DEFAULT;
+ p_acl = &ji->i_default_acl;
+ if (!S_ISDIR(inode->i_mode))
+ return acl ? -EACCES : 0;
+ break;
+ default:
+ return -EINVAL;
+ }
+ if (acl) {
+ size = xattr_acl_size(acl->a_count);
+ value = kmalloc(size, GFP_KERNEL);
+ if (!value)
+ return -ENOMEM;
+ rc = posix_acl_to_xattr(acl, value, size);
+ if (rc < 0)
+ goto out;
+ }
+ rc = __jfs_setxattr(inode, ea_name, value, size, 0);
+out:
+ if (value)
+ kfree(value);
+
+ if (!rc) {
+ if (*p_acl && (*p_acl != JFS_ACL_NOT_CACHED))
+ posix_acl_release(*p_acl);
+ *p_acl = posix_acl_dup(acl);
+ }
+ return rc;
+}
+
+static int jfs_check_acl(struct inode *inode, int mask)
+{
+ struct jfs_inode_info *ji = JFS_IP(inode);
+
+ if (ji->i_acl == JFS_ACL_NOT_CACHED) {
+ struct posix_acl *acl = jfs_get_acl(inode, ACL_TYPE_ACCESS);
+ if (IS_ERR(acl))
+ return PTR_ERR(acl);
+ posix_acl_release(acl);
+ }
+
+ if (ji->i_acl)
+ return posix_acl_permission(inode, ji->i_acl, mask);
+ return -EAGAIN;
+}
+
+int jfs_permission(struct inode *inode, int mask, struct nameidata *nd)
+{
+ return generic_permission(inode, mask, jfs_check_acl);
+}
+
+int jfs_init_acl(struct inode *inode, struct inode *dir)
+{
+ struct posix_acl *acl = NULL;
+ struct posix_acl *clone;
+ mode_t mode;
+ int rc = 0;
+
+ if (S_ISLNK(inode->i_mode))
+ return 0;
+
+ acl = jfs_get_acl(dir, ACL_TYPE_DEFAULT);
+ if (IS_ERR(acl))
+ return PTR_ERR(acl);
+
+ if (acl) {
+ if (S_ISDIR(inode->i_mode)) {
+ rc = jfs_set_acl(inode, ACL_TYPE_DEFAULT, acl);
+ if (rc)
+ goto cleanup;
+ }
+ clone = posix_acl_clone(acl, GFP_KERNEL);
+ if (!clone) {
+ rc = -ENOMEM;
+ goto cleanup;
+ }
+ mode = inode->i_mode;
+ rc = posix_acl_create_masq(clone, &mode);
+ if (rc >= 0) {
+ inode->i_mode = mode;
+ if (rc > 0)
+ rc = jfs_set_acl(inode, ACL_TYPE_ACCESS, clone);
+ }
+ posix_acl_release(clone);
+cleanup:
+ posix_acl_release(acl);
+ } else
+ inode->i_mode &= ~current->fs->umask;
+
+ return rc;
+}
+
+static int jfs_acl_chmod(struct inode *inode)
+{
+ struct posix_acl *acl, *clone;
+ int rc;
+
+ if (S_ISLNK(inode->i_mode))
+ return -EOPNOTSUPP;
+
+ acl = jfs_get_acl(inode, ACL_TYPE_ACCESS);
+ if (IS_ERR(acl) || !acl)
+ return PTR_ERR(acl);
+
+ clone = posix_acl_clone(acl, GFP_KERNEL);
+ posix_acl_release(acl);
+ if (!clone)
+ return -ENOMEM;
+
+ rc = posix_acl_chmod_masq(clone, inode->i_mode);
+ if (!rc)
+ rc = jfs_set_acl(inode, ACL_TYPE_ACCESS, clone);
+
+ posix_acl_release(clone);
+ return rc;
+}
+
+int jfs_setattr(struct dentry *dentry, struct iattr *iattr)
+{
+ struct inode *inode = dentry->d_inode;
+ int rc;
+
+ rc = inode_change_ok(inode, iattr);
+ if (rc)
+ return rc;
+
+ if ((iattr->ia_valid & ATTR_UID && iattr->ia_uid != inode->i_uid) ||
+ (iattr->ia_valid & ATTR_GID && iattr->ia_gid != inode->i_gid)) {
+ if (DQUOT_TRANSFER(inode, iattr))
+ return -EDQUOT;
+ }
+
+ rc = inode_setattr(inode, iattr);
+
+ if (!rc && (iattr->ia_valid & ATTR_MODE))
+ rc = jfs_acl_chmod(inode);
+
+ return rc;
+}