mirror of
https://gitlab.com/apparmor/apparmor.git
synced 2025-03-04 08:24:42 +01:00
72 lines
2.4 KiB
Diff
72 lines
2.4 KiB
Diff
Index: b/include/linux/dcache.h
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===================================================================
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--- a/include/linux/dcache.h
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+++ b/include/linux/dcache.h
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@@ -293,6 +293,8 @@ extern struct dentry * d_hash_and_lookup
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/* validate "insecure" dentry pointer */
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extern int d_validate(struct dentry *, struct dentry *);
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+extern char *__d_path(struct dentry *, struct vfsmount *, struct dentry *,
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+ struct vfsmount *, char *, int, int);
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extern char * d_path(struct dentry *, struct vfsmount *, char *, int);
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/* Allocation counts.. */
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Index: b/fs/dcache.c
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===================================================================
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--- a/fs/dcache.c
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+++ b/fs/dcache.c
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@@ -1750,9 +1750,9 @@ shouldnt_be_hashed:
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*
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* Returns the buffer or an error code.
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*/
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-static char *__d_path(struct dentry *dentry, struct vfsmount *vfsmnt,
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- struct dentry *root, struct vfsmount *rootmnt,
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- char *buffer, int buflen, int fail_deleted)
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+char *__d_path(struct dentry *dentry, struct vfsmount *vfsmnt,
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+ struct dentry *root, struct vfsmount *rootmnt,
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+ char *buffer, int buflen, int fail_deleted)
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{
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int namelen, is_slash, vfsmount_locked = 0;
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Index: b/fs/namespace.c
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===================================================================
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--- a/fs/namespace.c
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+++ b/fs/namespace.c
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@@ -1894,3 +1894,25 @@ void __put_mnt_ns(struct mnt_namespace *
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release_mounts(&umount_list);
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kfree(ns);
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}
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+
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+char *d_namespace_path(struct dentry *dentry, struct vfsmount *vfsmnt,
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+ char *buf, int buflen)
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+{
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+ char *res;
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+ struct vfsmount *rootmnt, *nsrootmnt;
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+ struct dentry *root;
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+
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+ read_lock(¤t->fs->lock);
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+ rootmnt = mntget(current->fs->rootmnt);
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+ read_unlock(¤t->fs->lock);
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+ spin_lock(&vfsmount_lock);
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+ nsrootmnt = mntget(rootmnt->mnt_ns->root);
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+ root = dget(nsrootmnt->mnt_root);
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+ spin_unlock(&vfsmount_lock);
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+ mntput(rootmnt);
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+ res = __d_path(dentry, vfsmnt, root, nsrootmnt, buf, buflen, 1);
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+ dput(root);
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+ mntput(nsrootmnt);
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+ return res;
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+}
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+EXPORT_SYMBOL(d_namespace_path);
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Index: b/include/linux/mount.h
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===================================================================
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--- a/include/linux/mount.h
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+++ b/include/linux/mount.h
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@@ -103,5 +103,7 @@ extern void shrink_submounts(struct vfsm
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extern spinlock_t vfsmount_lock;
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extern dev_t name_to_dev_t(char *name);
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+extern char *d_namespace_path(struct dentry *, struct vfsmount *, char *, int);
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+
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#endif
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#endif /* _LINUX_MOUNT_H */
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