mirror of
https://gitlab.com/apparmor/apparmor.git
synced 2025-03-06 09:21:00 +01:00
114 lines
4.5 KiB
Diff
114 lines
4.5 KiB
Diff
Pass the struct vfsmounts to the inode_link LSM hook
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Signed-off-by: Tony Jones <tonyj@suse.de>
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Signed-off-by: Andreas Gruenbacher <agruen@suse.de>
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Index: linux-2.6.19/fs/namei.c
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===================================================================
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--- linux-2.6.19.orig/fs/namei.c
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+++ linux-2.6.19/fs/namei.c
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@@ -2279,7 +2279,8 @@ int vfs_link(struct vfsmount *old_mnt, s
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if (S_ISDIR(old_dentry->d_inode->i_mode))
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return -EPERM;
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- error = security_inode_link(old_dentry, dir, new_dentry);
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+ error = security_inode_link(old_mnt, old_dentry, dir, new_mnt,
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+ new_dentry);
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if (error)
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return error;
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Index: linux-2.6.19/include/linux/security.h
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===================================================================
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--- linux-2.6.19.orig/include/linux/security.h
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+++ linux-2.6.19/include/linux/security.h
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@@ -288,8 +288,10 @@ struct request_sock;
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* Return 0 if permission is granted.
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* @inode_link:
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* Check permission before creating a new hard link to a file.
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+ * @old_mnt is the vfsmount where @old_dentry was looked up (may be NULL)
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* @old_dentry contains the dentry structure for an existing link to the file.
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* @dir contains the inode structure of the parent directory of the new link.
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+ * @new_mnt is the vfsmount for @new_dentry (may be NULL)
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* @new_dentry contains the dentry structure for the new link.
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* Return 0 if permission is granted.
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* @inode_unlink:
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@@ -1220,8 +1222,9 @@ struct security_operations {
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char **name, void **value, size_t *len);
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int (*inode_create) (struct inode *dir, struct vfsmount *mnt,
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struct dentry *dentry, int mode);
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- int (*inode_link) (struct dentry *old_dentry,
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- struct inode *dir, struct dentry *new_dentry);
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+ int (*inode_link) (struct vfsmount *old_mnt, struct dentry *old_dentry,
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+ struct inode *dir, struct vfsmount *new_mnt,
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+ struct dentry *new_dentry);
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int (*inode_unlink) (struct inode *dir, struct dentry *dentry);
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int (*inode_symlink) (struct inode *dir, struct vfsmount *mnt,
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struct dentry *dentry, const char *old_name);
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@@ -1636,13 +1639,16 @@ static inline int security_inode_create
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return security_ops->inode_create (dir, mnt, dentry, mode);
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}
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-static inline int security_inode_link (struct dentry *old_dentry,
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+static inline int security_inode_link (struct vfsmount *old_mnt,
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+ struct dentry *old_dentry,
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struct inode *dir,
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+ struct vfsmount *new_mnt,
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struct dentry *new_dentry)
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{
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if (unlikely (IS_PRIVATE (old_dentry->d_inode)))
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return 0;
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- return security_ops->inode_link (old_dentry, dir, new_dentry);
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+ return security_ops->inode_link (old_mnt, old_dentry, dir,
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+ new_mnt, new_dentry);
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}
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static inline int security_inode_unlink (struct inode *dir,
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@@ -2367,8 +2373,10 @@ static inline int security_inode_create
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return 0;
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}
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-static inline int security_inode_link (struct dentry *old_dentry,
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+static inline int security_inode_link (struct vfsmount *old_mnt,
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+ struct dentry *old_dentry,
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struct inode *dir,
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+ struct vfsmount *new_mnt,
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struct dentry *new_dentry)
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{
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return 0;
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Index: linux-2.6.19/security/dummy.c
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===================================================================
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--- linux-2.6.19.orig/security/dummy.c
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+++ linux-2.6.19/security/dummy.c
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@@ -270,7 +270,9 @@ static int dummy_inode_create (struct in
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return 0;
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}
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-static int dummy_inode_link (struct dentry *old_dentry, struct inode *inode,
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+static int dummy_inode_link (struct vfsmount *old_mnt,
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+ struct dentry *old_dentry, struct inode *inode,
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+ struct vfsmount *new_mnt,
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struct dentry *new_dentry)
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{
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return 0;
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Index: linux-2.6.19/security/selinux/hooks.c
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===================================================================
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--- linux-2.6.19.orig/security/selinux/hooks.c
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+++ linux-2.6.19/security/selinux/hooks.c
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@@ -2135,11 +2135,15 @@ static int selinux_inode_create(struct i
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return may_create(dir, dentry, SECCLASS_FILE);
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}
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-static int selinux_inode_link(struct dentry *old_dentry, struct inode *dir, struct dentry *new_dentry)
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+static int selinux_inode_link(struct vfsmount *old_mnt,
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+ struct dentry *old_dentry, struct inode *dir,
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+ struct vfsmount *new_mnt,
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+ struct dentry *new_dentry)
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{
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int rc;
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- rc = secondary_ops->inode_link(old_dentry,dir,new_dentry);
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+ rc = secondary_ops->inode_link(old_mnt, old_dentry, dir, new_mnt,
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+ new_dentry);
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if (rc)
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return rc;
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return may_link(dir, old_dentry, MAY_LINK);
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