From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Aneesh Kumar K.V" Subject: [PATCH -V19 07/15] vfs: Add handle based chown syscall Date: Fri, 27 Aug 2010 16:32:54 +0530 Message-ID: <1282906982-26918-8-git-send-email-aneesh.kumar@linux.vnet.ibm.com> References: <1282906982-26918-1-git-send-email-aneesh.kumar@linux.vnet.ibm.com> Cc: linux-fsdevel@vger.kernel.org, sfrench@us.ibm.com, philippe.deniel@CEA.FR, linux-kernel@vger.kernel.org, "Aneesh Kumar K.V" To: hch@infradead.org, viro@zeniv.linux.org.uk, adilger@sun.com, corbet@lwn.net, neilb@suse.de, npiggin@kernel.dk, hooanon05@yahoo.co.jp, bfields@fieldses.org, miklos@szeredi.hu Return-path: In-Reply-To: <1282906982-26918-1-git-send-email-aneesh.kumar@linux.vnet.ibm.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: linux-fsdevel.vger.kernel.org Signed-off-by: Aneesh Kumar K.V --- 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