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configfs: Add permission and ownership to configfs objects.

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configfs always made item and attribute ownership root.root and
permissions based on a umask of 022.  Add ->setattr() to allow
chown(2)/chmod(2), and persist the changes for the lifetime of the
items and attributes.

Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
This commit is contained in:
Joel Becker
2006-01-25 13:31:07 -08:00
committed by Mark Fasheh
parent 62ca3d2603
commit 3d0f89bb16
8 changed files with 181 additions and 39 deletions
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40
fs/configfs/dir.c
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@@ -72,7 +72,7 @@ static struct configfs_dirent *configfs_new_dirent(struct configfs_dirent * pare
{
struct configfs_dirent * sd;
sd = kmalloc(sizeof(*sd), GFP_KERNEL);
sd = kmem_cache_alloc(configfs_dir_cachep, GFP_KERNEL);
if (!sd)
return NULL;
@@ -136,13 +136,19 @@ static int create_dir(struct config_item * k, struct dentry * p,
int error;
umode_t mode = S_IFDIR| S_IRWXU | S_IRUGO | S_IXUGO;
error = configfs_create(d, mode, init_dir);
error = configfs_make_dirent(p->d_fsdata, d, k, mode,
CONFIGFS_DIR);
if (!error) {
error = configfs_make_dirent(p->d_fsdata, d, k, mode,
CONFIGFS_DIR);
error = configfs_create(d, mode, init_dir);
if (!error) {
p->d_inode->i_nlink++;
(d)->d_op = &configfs_dentry_ops;
} else {
struct configfs_dirent *sd = d->d_fsdata;
if (sd) {
list_del_init(&sd->s_sibling);
configfs_put(sd);
}
}
}
return error;
@@ -182,12 +188,19 @@ int configfs_create_link(struct configfs_symlink *sl,
int err = 0;
umode_t mode = S_IFLNK | S_IRWXUGO;
err = configfs_create(dentry, mode, init_symlink);
err = configfs_make_dirent(parent->d_fsdata, dentry, sl, mode,
CONFIGFS_ITEM_LINK);
if (!err) {
err = configfs_make_dirent(parent->d_fsdata, dentry, sl,
mode, CONFIGFS_ITEM_LINK);
err = configfs_create(dentry, mode, init_symlink);
if (!err)
dentry->d_op = &configfs_dentry_ops;
else {
struct configfs_dirent *sd = dentry->d_fsdata;
if (sd) {
list_del_init(&sd->s_sibling);
configfs_put(sd);
}
}
}
return err;
}
@@ -241,13 +254,15 @@ static int configfs_attach_attr(struct configfs_dirent * sd, struct dentry * den
struct configfs_attribute * attr = sd->s_element;
int error;
error = configfs_create(dentry, (attr->ca_mode & S_IALLUGO) | S_IFREG, init_file);
if (error)
return error;
dentry->d_op = &configfs_dentry_ops;
dentry->d_fsdata = configfs_get(sd);
sd->s_dentry = dentry;
error = configfs_create(dentry, (attr->ca_mode & S_IALLUGO) | S_IFREG, init_file);
if (error) {
configfs_put(sd);
return error;
}
dentry->d_op = &configfs_dentry_ops;
d_rehash(dentry);
return 0;
@@ -839,6 +854,7 @@ struct inode_operations configfs_dir_inode_operations = {
.symlink = configfs_symlink,
.unlink = configfs_unlink,
.lookup = configfs_lookup,
.setattr = configfs_setattr,
};
#if 0