Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@xxxxxxxxxxxxxxxxxx>
---
fs/open.c | 20 ++++++++++++++++++++
include/linux/syscalls.h | 2 ++
2 files changed, 22 insertions(+), 0 deletions(-)
diff --git a/fs/open.c b/fs/open.c
index 7abdcba..5e06c12 100644
--- a/fs/open.c
+++ b/fs/open.c
@@ -623,6 +623,26 @@ out:
return error;
}
+SYSCALL_DEFINE4(handle_chown, int, mountdirfd, struct file_handle __user *, ufh,
+ uid_t, user, gid_t, group)
+{
+ struct path path;
+ int error = -EINVAL;
+
+ error = handle_to_path(mountdirfd, ufh, &path);
+ if (error)
+ goto out;
+ error = mnt_want_write(path.mnt);
+ if (error)
+ goto out_release;
+ error = chown_common(&path, user, group);
+ mnt_drop_write(path.mnt);
+out_release:
+ path_put(&path);
+out:
+ return error;
+}
+
/*
* You have to be very careful that these write
* counts get cleaned up in error cases and
diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h
index 9c82364..6dab72b 100644
--- a/include/linux/syscalls.h
+++ b/include/linux/syscalls.h
@@ -852,4 +852,6 @@ asmlinkage long sys_handle_stat(int mountdirfd,
#endif
asmlinkage long sys_handle_link(int mountdirfd, struct file_handle __user *uofh,
int newfd, const char __user *newname);
+asmlinkage long sys_handle_chown(int mountdirfd, struct file_handle __user *ufh,
+ uid_t user, gid_t group);
#endif
--
1.7.0.4
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