diff options
Diffstat (limited to 'sys/gnu/fs/xfs/xfs_cap.c')
| -rw-r--r-- | sys/gnu/fs/xfs/xfs_cap.c | 207 |
1 files changed, 0 insertions, 207 deletions
diff --git a/sys/gnu/fs/xfs/xfs_cap.c b/sys/gnu/fs/xfs/xfs_cap.c deleted file mode 100644 index 7f8e038..0000000 --- a/sys/gnu/fs/xfs/xfs_cap.c +++ /dev/null @@ -1,207 +0,0 @@ -/* - * Copyright (c) 2002 Silicon Graphics, Inc. All Rights Reserved. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of version 2 of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. - * - * Further, this software is distributed without any warranty that it is - * free of the rightful claim of any third person regarding infringement - * or the like. Any license provided herein, whether implied or - * otherwise, applies only to this software file. Patent licenses, if - * any, provided herein do not apply to combinations of this program with - * other software, or any other product whatsoever. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write the Free Software Foundation, Inc., 59 - * Temple Place - Suite 330, Boston MA 02111-1307, USA. - * - * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy, - * Mountain View, CA 94043, or: - * - * http://www.sgi.com - * - * For further information regarding this notice, see: - * - * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/ - */ - -#include "xfs.h" - -STATIC int xfs_cap_allow_set(xfs_vnode_t *); - - -/* - * Test for existence of capability attribute as efficiently as possible. - */ -int -xfs_cap_vhascap( - xfs_vnode_t *vp) -{ - int error; - int len = sizeof(xfs_cap_set_t); - int flags = ATTR_KERNOVAL|ATTR_ROOT; - - XVOP_ATTR_GET(vp, SGI_CAP_LINUX, NULL, &len, flags, sys_cred, error); - return (error == 0); -} - -/* - * Convert from extended attribute representation to in-memory for XFS. - */ -STATIC int -posix_cap_xattr_to_xfs( - posix_cap_xattr *src, - size_t size, - xfs_cap_set_t *dest) -{ - if (!src || !dest) - return EINVAL; - - if (src->c_version != cpu_to_le32(POSIX_CAP_XATTR_VERSION)) - return EINVAL; - if (src->c_abiversion != cpu_to_le32(_LINUX_CAPABILITY_VERSION)) - return EINVAL; - - if (size < sizeof(posix_cap_xattr)) - return EINVAL; - - ASSERT(sizeof(dest->cap_effective) == sizeof(src->c_effective)); - - dest->cap_effective = src->c_effective; - dest->cap_permitted = src->c_permitted; - dest->cap_inheritable = src->c_inheritable; - - return 0; -} - -/* - * Convert from in-memory XFS to extended attribute representation. - */ -STATIC int -posix_cap_xfs_to_xattr( - xfs_cap_set_t *src, - posix_cap_xattr *xattr_cap, - size_t size) -{ - size_t new_size = posix_cap_xattr_size(); - - if (size < new_size) - return -ERANGE; - - ASSERT(sizeof(xattr_cap->c_effective) == sizeof(src->cap_effective)); - - xattr_cap->c_version = cpu_to_le32(POSIX_CAP_XATTR_VERSION); - xattr_cap->c_abiversion = cpu_to_le32(_LINUX_CAPABILITY_VERSION); - xattr_cap->c_effective = src->cap_effective; - xattr_cap->c_permitted = src->cap_permitted; - xattr_cap->c_inheritable= src->cap_inheritable; - - return new_size; -} - -int -xfs_cap_vget( - xfs_vnode_t *vp, - void *cap, - size_t size) -{ - int error; - int len = sizeof(xfs_cap_set_t); - int flags = ATTR_ROOT; - xfs_cap_set_t xfs_cap = { 0 }; - posix_cap_xattr *xattr_cap = cap; - char *data = (char *)&xfs_cap; - - VN_HOLD(vp); - if ((error = _MAC_VACCESS(vp, NULL, VREAD))) - goto out; - - if (!size) { - flags |= ATTR_KERNOVAL; - data = NULL; - } - XVOP_ATTR_GET(vp, SGI_CAP_LINUX, data, &len, flags, sys_cred, error); - if (error) - goto out; - ASSERT(len == sizeof(xfs_cap_set_t)); - - error = (size)? -posix_cap_xattr_size() : - -posix_cap_xfs_to_xattr(&xfs_cap, xattr_cap, size); -out: - VN_RELE(vp); - return -error; -} - -int -xfs_cap_vremove( - xfs_vnode_t *vp) -{ - int error; - - VN_HOLD(vp); - error = xfs_cap_allow_set(vp); - if (!error) { - XVOP_ATTR_REMOVE(vp, SGI_CAP_LINUX, ATTR_ROOT, sys_cred, error); - if (error == ENOATTR) - error = 0; /* 'scool */ - } - VN_RELE(vp); - return -error; -} - -int -xfs_cap_vset( - xfs_vnode_t *vp, - void *cap, - size_t size) -{ - posix_cap_xattr *xattr_cap = cap; - xfs_cap_set_t xfs_cap; - int error; - - if (!cap) - return -EINVAL; - - error = posix_cap_xattr_to_xfs(xattr_cap, size, &xfs_cap); - if (error) - return -error; - - VN_HOLD(vp); - error = xfs_cap_allow_set(vp); - if (error) - goto out; - - XVOP_ATTR_SET(vp, SGI_CAP_LINUX, (char *)&xfs_cap, - sizeof(xfs_cap_set_t), ATTR_ROOT, sys_cred, error); -out: - VN_RELE(vp); - return -error; -} - -STATIC int -xfs_cap_allow_set( - xfs_vnode_t *vp) -{ - vattr_t va; - int error; - - if (vp->v_vfsp->vfs_flag & VFS_RDONLY) - return EROFS; - if (vp->v_inode.i_flags & (S_IMMUTABLE|S_APPEND)) - return EPERM; - if ((error = _MAC_VACCESS(vp, NULL, VWRITE))) - return error; - va.va_mask = XFS_AT_UID; - XVOP_GETATTR(vp, &va, 0, NULL, error); - if (error) - return error; - if (va.va_uid != current->fsuid && !capable(CAP_FOWNER)) - return EPERM; - return error; -} - |
