Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754265Ab0H0LEH (ORCPT ); Fri, 27 Aug 2010 07:04:07 -0400 Received: from e23smtp06.au.ibm.com ([202.81.31.148]:52547 "EHLO e23smtp06.au.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753773Ab0H0LEE (ORCPT ); Fri, 27 Aug 2010 07:04:04 -0400 From: "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 Cc: linux-fsdevel@vger.kernel.org, sfrench@us.ibm.com, philippe.deniel@CEA.FR, linux-kernel@vger.kernel.org, "Aneesh Kumar K.V" Subject: [PATCH -V19 08/15] vfs: Add handle based xattr syscalls Date: Fri, 27 Aug 2010 16:32:55 +0530 Message-Id: <1282906982-26918-9-git-send-email-aneesh.kumar@linux.vnet.ibm.com> X-Mailer: git-send-email 1.7.0.4 In-Reply-To: <1282906982-26918-1-git-send-email-aneesh.kumar@linux.vnet.ibm.com> References: <1282906982-26918-1-git-send-email-aneesh.kumar@linux.vnet.ibm.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3919 Lines: 140 Signed-off-by: Aneesh Kumar K.V --- fs/xattr.c | 70 ++++++++++++++++++++++++++++++++++++++++++++++ include/linux/syscalls.h | 15 ++++++++++ 2 files changed, 85 insertions(+), 0 deletions(-) diff --git a/fs/xattr.c b/fs/xattr.c index 01bb813..1d236c9 100644 --- a/fs/xattr.c +++ b/fs/xattr.c @@ -335,6 +335,26 @@ SYSCALL_DEFINE5(fsetxattr, int, fd, const char __user *, name, return error; } +SYSCALL_DEFINE6(handle_setxattr, int, mountdirfd, + struct file_handle __user *, ufh, + const char __user *, name, const void __user *, value, + size_t, size, int, flags) +{ + struct path path; + int error; + + error = handle_to_path(mountdirfd, ufh, &path); + if (error) + return error; + error = mnt_want_write(path.mnt); + if (!error) { + error = setxattr(path.dentry, name, value, size, flags); + mnt_drop_write(path.mnt); + } + path_put(&path); + return error; +} + /* * Extended attribute GET operations */ @@ -416,6 +436,22 @@ SYSCALL_DEFINE4(fgetxattr, int, fd, const char __user *, name, return error; } +SYSCALL_DEFINE5(handle_getxattr, int, mountdirfd, + struct file_handle __user *, ufh, + const char __user *, name, + void __user *, value, size_t, size) +{ + struct path path; + ssize_t error; + + error = handle_to_path(mountdirfd, ufh, &path); + if (error) + return error; + error = getxattr(path.dentry, name, value, size); + path_put(&path); + return error; +} + /* * Extended attribute LIST operations */ @@ -488,6 +524,21 @@ SYSCALL_DEFINE3(flistxattr, int, fd, char __user *, list, size_t, size) return error; } +SYSCALL_DEFINE4(handle_listxattr, int, mountdirfd, + struct file_handle __user *, ufh, + char __user *, list, size_t, size) +{ + struct path path; + ssize_t error; + + error = handle_to_path(mountdirfd, ufh, &path); + if (error) + return error; + error = listxattr(path.dentry, list, size); + path_put(&path); + return error; +} + /* * Extended attribute REMOVE operations */ @@ -562,6 +613,25 @@ SYSCALL_DEFINE2(fremovexattr, int, fd, const char __user *, name) return error; } +SYSCALL_DEFINE3(handle_removexattr, int, mountdirfd, + struct file_handle __user *, ufh, + const char __user *, name) +{ + struct path path; + int error; + + error = handle_to_path(mountdirfd, ufh, &path); + if (error) + return error; + error = mnt_want_write(path.mnt); + if (!error) { + error = removexattr(path.dentry, name); + mnt_drop_write(path.mnt); + } + path_put(&path); + return error; +} + static const char * strcmp_prefix(const char *a, const char *a_prefix) diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h index 6dab72b..4c7e922 100644 --- a/include/linux/syscalls.h +++ b/include/linux/syscalls.h @@ -854,4 +854,19 @@ 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); +asmlinkage long sys_handle_setxattr(int mountdirfd, + struct file_handle __user *ufh, + const char __user *name, + const void __user *value, + size_t size, int flags); +asmlinkage long sys_handle_getxattr(int mountdirfd, + struct file_handle __user *ufh, + const char __user *name, + void __user *value, size_t size); +asmlinkage long sys_handle_listxattr(int mountdirfd, + struct file_handle __user *ufh, + char __user *list, size_t size); +asmlinkage long sys_handle_removexattr(int mountdirfd, + struct file_handle __user *ufh, + const char __user *name); #endif -- 1.7.0.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/