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selinuxfs: merge dentry allocation into sel_make_dir()

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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2012-03-18 20:36:59 -04:00
parent e152c38aba
commit a1c2aa1e86
1 changed files with 44 additions and 66 deletions
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110
security/selinux/selinuxfs.c
View file

@ -344,7 +344,7 @@ static int sel_make_classes(void);
static int sel_make_policycap(void);
/* declaration for sel_make_class_dirs */
static int sel_make_dir(struct inode *dir, struct dentry *dentry,
static struct dentry *sel_make_dir(struct dentry *dir, const char *name,
unsigned long *ino);
static ssize_t sel_read_mls(struct file *filp, char __user *buf,
@ -1678,13 +1678,9 @@ static int sel_make_class_dir_entries(char *classname, int index,
inode->i_ino = sel_class_to_ino(index);
d_add(dentry, inode);
dentry = d_alloc_name(dir, "perms");
if (!dentry)
return -ENOMEM;
rc = sel_make_dir(dir->d_inode, dentry, &last_class_ino);
if (rc)
return rc;
dentry = sel_make_dir(dir, "perms", &last_class_ino);
if (IS_ERR(dentry))
return PTR_ERR(dentry);
rc = sel_make_perm_files(classname, index, dentry);
@ -1733,15 +1729,12 @@ static int sel_make_classes(void)
for (i = 0; i < nclasses; i++) {
struct dentry *class_name_dir;
rc = -ENOMEM;
class_name_dir = d_alloc_name(class_dir, classes[i]);
if (!class_name_dir)
goto out;
rc = sel_make_dir(class_dir->d_inode, class_name_dir,
class_name_dir = sel_make_dir(class_dir, classes[i],
&last_class_ino);
if (rc)
if (IS_ERR(class_name_dir)) {
rc = PTR_ERR(class_name_dir);
goto out;
}
/* i+1 since class values are 1-indexed */
rc = sel_make_class_dir_entries(classes[i], i + 1,
@ -1787,14 +1780,20 @@ static int sel_make_policycap(void)
return 0;
}
static int sel_make_dir(struct inode *dir, struct dentry *dentry,
static struct dentry *sel_make_dir(struct dentry *dir, const char *name,
unsigned long *ino)
{
struct dentry *dentry = d_alloc_name(dir, name);
struct inode *inode;
inode = sel_make_inode(dir->i_sb, S_IFDIR | S_IRUGO | S_IXUGO);
if (!inode)
return -ENOMEM;
if (!dentry)
return ERR_PTR(-ENOMEM);
inode = sel_make_inode(dir->d_sb, S_IFDIR | S_IRUGO | S_IXUGO);
if (!inode) {
dput(dentry);
return ERR_PTR(-ENOMEM);
}
inode->i_op = &simple_dir_inode_operations;
inode->i_fop = &simple_dir_operations;
@ -1803,16 +1802,16 @@ static int sel_make_dir(struct inode *dir, struct dentry *dentry,
inc_nlink(inode);
d_add(dentry, inode);
/* bump link count on parent directory, too */
inc_nlink(dir);
inc_nlink(dir->d_inode);
return 0;
return dentry;
}
static int sel_fill_super(struct super_block *sb, void *data, int silent)
{
int ret;
struct dentry *dentry;
struct inode *inode, *root_inode;
struct inode *inode;
struct inode_security_struct *isec;
static struct tree_descr selinux_files[] = {
@ -1839,18 +1838,12 @@ static int sel_fill_super(struct super_block *sb, void *data, int silent)
if (ret)
goto err;
root_inode = sb->s_root->d_inode;
ret = -ENOMEM;
dentry = d_alloc_name(sb->s_root, BOOL_DIR_NAME);
if (!dentry)
bool_dir = sel_make_dir(sb->s_root, BOOL_DIR_NAME, &sel_last_ino);
if (IS_ERR(bool_dir)) {
ret = PTR_ERR(bool_dir);
bool_dir = NULL;
goto err;
ret = sel_make_dir(root_inode, dentry, &sel_last_ino);
if (ret)
goto err;
bool_dir = dentry;
}
ret = -ENOMEM;
dentry = d_alloc_name(sb->s_root, NULL_FILE_NAME);
@ -1872,54 +1865,39 @@ static int sel_fill_super(struct super_block *sb, void *data, int silent)
d_add(dentry, inode);
selinux_null = dentry;
ret = -ENOMEM;
dentry = d_alloc_name(sb->s_root, "avc");
if (!dentry)
goto err;
ret = sel_make_dir(root_inode, dentry, &sel_last_ino);
if (ret)
dentry = sel_make_dir(sb->s_root, "avc", &sel_last_ino);
if (IS_ERR(dentry)) {
ret = PTR_ERR(dentry);
goto err;
}
ret = sel_make_avc_files(dentry);
if (ret)
goto err;
ret = -ENOMEM;
dentry = d_alloc_name(sb->s_root, "initial_contexts");
if (!dentry)
goto err;
ret = sel_make_dir(root_inode, dentry, &sel_last_ino);
if (ret)
dentry = sel_make_dir(sb->s_root, "initial_contexts", &sel_last_ino);
if (IS_ERR(dentry)) {
ret = PTR_ERR(dentry);
goto err;
}
ret = sel_make_initcon_files(dentry);
if (ret)
goto err;
ret = -ENOMEM;
dentry = d_alloc_name(sb->s_root, "class");
if (!dentry)
class_dir = sel_make_dir(sb->s_root, "class", &sel_last_ino);
if (IS_ERR(class_dir)) {
ret = PTR_ERR(class_dir);
class_dir = NULL;
goto err;
}
ret = sel_make_dir(root_inode, dentry, &sel_last_ino);
if (ret)
policycap_dir = sel_make_dir(sb->s_root, "policy_capabilities", &sel_last_ino);
if (IS_ERR(policycap_dir)) {
ret = PTR_ERR(policycap_dir);
policycap_dir = NULL;
goto err;
class_dir = dentry;
ret = -ENOMEM;
dentry = d_alloc_name(sb->s_root, "policy_capabilities");
if (!dentry)
goto err;
ret = sel_make_dir(root_inode, dentry, &sel_last_ino);
if (ret)
goto err;
policycap_dir = dentry;
}
return 0;
err:
printk(KERN_ERR "SELinux: %s: failed while creating inodes\n",