Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753144Ab0HZLUv (ORCPT ); Thu, 26 Aug 2010 07:20:51 -0400 Received: from e28smtp01.in.ibm.com ([122.248.162.1]:49895 "EHLO e28smtp01.in.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752142Ab0HZLUV (ORCPT ); Thu, 26 Aug 2010 07:20:21 -0400 From: "Aneesh Kumar K.V" To: v9fs-developer@lists.sourceforge.net Cc: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, "Aneesh Kumar K.V" Subject: [PATCH -V2 2/6] fs/9p: Add xattr callbacks for POSIX ACL Date: Thu, 26 Aug 2010 16:49:54 +0530 Message-Id: <1282821598-16472-2-git-send-email-aneesh.kumar@linux.vnet.ibm.com> X-Mailer: git-send-email 1.7.0.4 In-Reply-To: <1282821598-16472-1-git-send-email-aneesh.kumar@linux.vnet.ibm.com> References: <1282821598-16472-1-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: 3346 Lines: 115 This patch implement fetching POSIX ACL from the server Signed-off-by: Aneesh Kumar K.V --- fs/9p/acl.c | 63 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ fs/9p/xattr.c | 4 +++ fs/9p/xattr.h | 2 + 3 files changed, 69 insertions(+), 0 deletions(-) diff --git a/fs/9p/acl.c b/fs/9p/acl.c index 5de599b..e122e63 100644 --- a/fs/9p/acl.c +++ b/fs/9p/acl.c @@ -93,3 +93,66 @@ int v9fs_check_acl(struct inode *inode, int mask) } return -EAGAIN; } + +static size_t v9fs_xattr_list_acl_access(struct dentry *dentry, char *list, + size_t list_len, const char *name, + size_t name_len, int type) +{ + const size_t size = sizeof(POSIX_ACL_XATTR_ACCESS); + if (list && size <= list_len) + memcpy(list, POSIX_ACL_XATTR_ACCESS, size); + return size; +} + +static size_t v9fs_xattr_list_acl_default(struct dentry *dentry, char *list, + size_t list_len, const char *name, + size_t name_len, int type) +{ + const size_t size = sizeof(POSIX_ACL_XATTR_DEFAULT); + if (list && size <= list_len) + memcpy(list, POSIX_ACL_XATTR_DEFAULT, size); + return size; +} + +static int v9fs_xattr_get_acl(struct dentry *dentry, const char *name, + void *buffer, size_t size, int type) +{ + struct posix_acl *acl; + int error; + + if (strcmp(name, "") != 0) + return -EINVAL; + + acl = v9fs_get_cached_acl(dentry->d_inode, type); + if (IS_ERR(acl)) + return PTR_ERR(acl); + if (acl == NULL) + return -ENODATA; + error = posix_acl_to_xattr(acl, buffer, size); + posix_acl_release(acl); + + return error; +} + +static int v9fs_xattr_set_acl(struct dentry *dentry, const char *name, + const void *value, size_t size, + int flags, int type) +{ + return 0; +} + +const struct xattr_handler v9fs_xattr_acl_access_handler = { + .prefix = POSIX_ACL_XATTR_ACCESS, + .flags = ACL_TYPE_ACCESS, + .list = v9fs_xattr_list_acl_access, + .get = v9fs_xattr_get_acl, + .set = v9fs_xattr_set_acl, +}; + +const struct xattr_handler v9fs_xattr_acl_default_handler = { + .prefix = POSIX_ACL_XATTR_DEFAULT, + .flags = ACL_TYPE_DEFAULT, + .list = v9fs_xattr_list_acl_default, + .get = v9fs_xattr_get_acl, + .set = v9fs_xattr_set_acl, +}; diff --git a/fs/9p/xattr.c b/fs/9p/xattr.c index a3696c9..a9ff0ca 100644 --- a/fs/9p/xattr.c +++ b/fs/9p/xattr.c @@ -164,5 +164,9 @@ ssize_t v9fs_listxattr(struct dentry *dentry, char *buffer, size_t buffer_size) const struct xattr_handler *v9fs_xattr_handlers[] = { &v9fs_xattr_user_handler, +#ifdef CONFIG_9P_FS_POSIX_ACL + &v9fs_xattr_acl_access_handler, + &v9fs_xattr_acl_default_handler, +#endif NULL }; diff --git a/fs/9p/xattr.h b/fs/9p/xattr.h index ec908c6..eaa837c 100644 --- a/fs/9p/xattr.h +++ b/fs/9p/xattr.h @@ -20,6 +20,8 @@ extern const struct xattr_handler *v9fs_xattr_handlers[]; extern struct xattr_handler v9fs_xattr_user_handler; +extern const struct xattr_handler v9fs_xattr_acl_access_handler; +extern const struct xattr_handler v9fs_xattr_acl_default_handler; extern ssize_t v9fs_fid_xattr_get(struct p9_fid *, const char *, void *, size_t); -- 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/