/*
* Set attribute vnode op. called from several syscalls
*/
int
ext2fs_setattr(void *v)
{
struct vop_setattr_args /* {
struct vnode *a_vp;
struct vattr *a_vap;
kauth_cred_t a_cred;
} */ *ap = v;
struct vattr *vap = ap->a_vap;
struct vnode *vp = ap->a_vp;
struct inode *ip = VTOI(vp);
kauth_cred_t cred = ap->a_cred;
struct lwp *l = curlwp;
int error;
kauth_action_t action = KAUTH_VNODE_WRITE_FLAGS;
bool changing_sysflags = false;
/*
* Check for unsettable attributes.
*/
if ((vap->va_type != VNON) || (vap->va_nlink != (nlink_t)VNOVAL) ||
(vap->va_fsid != VNOVAL) || (vap->va_fileid != VNOVAL) ||
(vap->va_blocksize != VNOVAL) || (vap->va_rdev != VNOVAL) ||
((int)vap->va_bytes != VNOVAL) || (vap->va_gen != VNOVAL)) {
return (EINVAL);
}
if (vap->va_flags != VNOVAL) {
if (vp->v_mount->mnt_flag & MNT_RDONLY)
return (EROFS);
/*
* Check if we're allowed to change the flags.
* If EXT2FS_SYSTEM_FLAGS is set, then the flags are treated
* as system flags, otherwise they're considered to be user
* flags.
*/
#ifdef EXT2FS_SYSTEM_FLAGS
/* Indicate we're changing system flags if we are. */
if ((vap->va_flags & SF_APPEND) ||
(vap->va_flags & SF_IMMUTABLE)) {
action |= KAUTH_VNODE_WRITE_SYSFLAGS;
changing_sysflags = true;
}
/* Indicate the node has system flags if it does. */
if (ip->i_e2fs_flags & (EXT2_APPEND | EXT2_IMMUTABLE)) {
action |= KAUTH_VNODE_HAS_SYSFLAGS;
}
#endif /* EXT2FS_SYSTEM_FLAGS */
error = kauth_authorize_vnode(cred, action, vp, NULL,
genfs_can_chflags(cred, vp->v_type, ip->i_uid,
changing_sysflags));
if (error)
return (error);
#ifdef EXT2FS_SYSTEM_FLAGS
ip->i_e2fs_flags &= ~(EXT2_APPEND | EXT2_IMMUTABLE);
ip->i_e2fs_flags |=
(vap->va_flags & SF_APPEND) ? EXT2_APPEND : 0 |
(vap->va_flags & SF_IMMUTABLE) ? EXT2_IMMUTABLE : 0;
#else
ip->i_e2fs_flags &= ~(EXT2_APPEND | EXT2_IMMUTABLE);
ip->i_e2fs_flags |=
(vap->va_flags & UF_APPEND) ? EXT2_APPEND : 0 |
(vap->va_flags & UF_IMMUTABLE) ? EXT2_IMMUTABLE : 0;
#endif
ip->i_flag |= IN_CHANGE;
if (vap->va_flags & (IMMUTABLE | APPEND))
return (0);
}
if (ip->i_e2fs_flags & (EXT2_APPEND | EXT2_IMMUTABLE))
return (EPERM);
/*
* Go through the fields and update iff not VNOVAL.
*/
if (vap->va_uid != (uid_t)VNOVAL || vap->va_gid != (gid_t)VNOVAL) {
if (vp->v_mount->mnt_flag & MNT_RDONLY)
return (EROFS);
error = ext2fs_chown(vp, vap->va_uid, vap->va_gid, cred, l);
if (error)
return (error);
}
if (vap->va_size != VNOVAL) {
/*
* Disallow write attempts on read-only file systems;
* unless the file is a socket, fifo, or a block or
* character device resident on the file system.
*/
switch (vp->v_type) {
case VDIR:
return (EISDIR);
case VLNK:
case VREG:
if (vp->v_mount->mnt_flag & MNT_RDONLY)
return (EROFS);
default:
break;
}
error = ext2fs_truncate(vp, vap->va_size, 0, cred);
if (error)
return (error);
}
ip = VTOI(vp);
if (vap->va_atime.tv_sec != VNOVAL || vap->va_mtime.tv_sec != VNOVAL) {
if (vp->v_mount->mnt_flag & MNT_RDONLY)
return (EROFS);
error = kauth_authorize_vnode(cred, KAUTH_VNODE_WRITE_TIMES, vp,
NULL, genfs_can_chtimes(vp, vap->va_vaflags, ip->i_uid,
cred));
if (error)
return (error);
if (vap->va_atime.tv_sec != VNOVAL)
if (!(vp->v_mount->mnt_flag & MNT_NOATIME))
ip->i_flag |= IN_ACCESS;
if (vap->va_mtime.tv_sec != VNOVAL) {
ip->i_flag |= IN_CHANGE | IN_UPDATE;
if (vp->v_mount->mnt_flag & MNT_RELATIME)
ip->i_flag |= IN_ACCESS;
}
error = ext2fs_update(vp, &vap->va_atime, &vap->va_mtime,
UPDATE_WAIT);
if (error)
return (error);
}
error = 0;
if (vap->va_mode != (mode_t)VNOVAL) {
if (vp->v_mount->mnt_flag & MNT_RDONLY)
return (EROFS);
error = ext2fs_chmod(vp, (int)vap->va_mode, cred, l);
}
VN_KNOTE(vp, NOTE_ATTRIB);
return (error);
}
/*ARGSUSED*/
int
ptyfs_setattr(void *v)
{
struct vop_setattr_args /* {
struct vnodeop_desc *a_desc;
struct vnode *a_vp;
struct vattr *a_vap;
kauth_cred_t a_cred;
} */ *ap = v;
struct vnode *vp = ap->a_vp;
struct ptyfsnode *ptyfs = VTOPTYFS(vp);
struct vattr *vap = ap->a_vap;
kauth_cred_t cred = ap->a_cred;
struct lwp *l = curlwp;
int error;
kauth_action_t action = KAUTH_VNODE_WRITE_FLAGS;
bool changing_sysflags = false;
if (vap->va_size != VNOVAL) {
switch (ptyfs->ptyfs_type) {
case PTYFSroot:
return EISDIR;
case PTYFSpts:
case PTYFSptc:
break;
default:
return EINVAL;
}
}
if (vap->va_flags != VNOVAL) {
if (vp->v_mount->mnt_flag & MNT_RDONLY)
return EROFS;
/* Immutable and append-only flags are not supported on ptyfs. */
if (vap->va_flags & (IMMUTABLE | APPEND))
return EINVAL;
/* Snapshot flag cannot be set or cleared */
if ((vap->va_flags & SF_SNAPSHOT) != (ptyfs->ptyfs_flags & SF_SNAPSHOT))
return EPERM;
if ((ptyfs->ptyfs_flags & SF_SETTABLE) != (vap->va_flags & SF_SETTABLE)) {
changing_sysflags = true;
action |= KAUTH_VNODE_WRITE_SYSFLAGS;
}
error = kauth_authorize_vnode(cred, action, vp, NULL,
genfs_can_chflags(cred, vp->v_type, ptyfs->ptyfs_uid,
changing_sysflags));
if (error)
return error;
if (changing_sysflags) {
ptyfs->ptyfs_flags = vap->va_flags;
} else {
ptyfs->ptyfs_flags &= SF_SETTABLE;
ptyfs->ptyfs_flags |= (vap->va_flags & UF_SETTABLE);
}
ptyfs->ptyfs_status |= PTYFS_CHANGE;
}
/*
* Go through the fields and update iff not VNOVAL.
*/
if (vap->va_uid != (uid_t)VNOVAL || vap->va_gid != (gid_t)VNOVAL) {
if (vp->v_mount->mnt_flag & MNT_RDONLY)
return EROFS;
if (ptyfs->ptyfs_type == PTYFSroot)
return EPERM;
error = ptyfs_chown(vp, vap->va_uid, vap->va_gid, cred, l);
if (error)
return error;
}
if (vap->va_atime.tv_sec != VNOVAL || vap->va_mtime.tv_sec != VNOVAL ||
vap->va_birthtime.tv_sec != VNOVAL) {
if (vp->v_mount->mnt_flag & MNT_RDONLY)
return EROFS;
if ((ptyfs->ptyfs_flags & SF_SNAPSHOT) != 0)
return EPERM;
error = kauth_authorize_vnode(cred, KAUTH_VNODE_WRITE_TIMES, vp,
NULL, genfs_can_chtimes(vp, vap->va_vaflags,
ptyfs->ptyfs_uid, cred));
if (error)
return (error);
if (vap->va_atime.tv_sec != VNOVAL)
if (!(vp->v_mount->mnt_flag & MNT_NOATIME))
ptyfs->ptyfs_status |= PTYFS_ACCESS;
if (vap->va_mtime.tv_sec != VNOVAL) {
ptyfs->ptyfs_status |= PTYFS_CHANGE | PTYFS_MODIFY;
if (vp->v_mount->mnt_flag & MNT_RELATIME)
ptyfs->ptyfs_status |= PTYFS_ACCESS;
}
if (vap->va_birthtime.tv_sec != VNOVAL)
ptyfs->ptyfs_birthtime = vap->va_birthtime;
ptyfs->ptyfs_status |= PTYFS_CHANGE;
error = ptyfs_update(vp, &vap->va_atime, &vap->va_mtime, 0);
if (error)
return error;
}
if (vap->va_mode != (mode_t)VNOVAL) {
if (vp->v_mount->mnt_flag & MNT_RDONLY)
return EROFS;
if (ptyfs->ptyfs_type == PTYFSroot)
return EPERM;
if ((ptyfs->ptyfs_flags & SF_SNAPSHOT) != 0 &&
(vap->va_mode &
(S_IXUSR|S_IWUSR|S_IXGRP|S_IWGRP|S_IXOTH|S_IWOTH)))
return EPERM;
error = ptyfs_chmod(vp, vap->va_mode, cred, l);
if (error)
return error;
}
VN_KNOTE(vp, NOTE_ATTRIB);
return 0;
}
/*
* Set attribute vnode op. called from several syscalls
*/
int
ufs_setattr(void *v)
{
struct vop_setattr_args /* {
struct vnode *a_vp;
struct vattr *a_vap;
kauth_cred_t a_cred;
} */ *ap = v;
struct vattr *vap;
struct vnode *vp;
struct inode *ip;
kauth_cred_t cred;
struct lwp *l;
int error;
kauth_action_t action;
bool changing_sysflags;
vap = ap->a_vap;
vp = ap->a_vp;
ip = VTOI(vp);
cred = ap->a_cred;
l = curlwp;
action = KAUTH_VNODE_WRITE_FLAGS;
changing_sysflags = false;
/*
* Check for unsettable attributes.
*/
if ((vap->va_type != VNON) || (vap->va_nlink != VNOVAL) ||
(vap->va_fsid != VNOVAL) || (vap->va_fileid != VNOVAL) ||
(vap->va_blocksize != VNOVAL) || (vap->va_rdev != VNOVAL) ||
((int)vap->va_bytes != VNOVAL) || (vap->va_gen != VNOVAL)) {
return (EINVAL);
}
fstrans_start(vp->v_mount, FSTRANS_SHARED);
if (vap->va_flags != VNOVAL) {
if (vp->v_mount->mnt_flag & MNT_RDONLY) {
error = EROFS;
goto out;
}
/* Snapshot flag cannot be set or cleared */
if ((vap->va_flags & (SF_SNAPSHOT | SF_SNAPINVAL)) !=
(ip->i_flags & (SF_SNAPSHOT | SF_SNAPINVAL))) {
error = EPERM;
goto out;
}
if (ip->i_flags & (SF_IMMUTABLE | SF_APPEND)) {
action |= KAUTH_VNODE_HAS_SYSFLAGS;
}
if ((vap->va_flags & SF_SETTABLE) !=
(ip->i_flags & SF_SETTABLE)) {
action |= KAUTH_VNODE_WRITE_SYSFLAGS;
changing_sysflags = true;
}
error = kauth_authorize_vnode(cred, action, vp, NULL,
genfs_can_chflags(cred, vp->v_type, ip->i_uid,
changing_sysflags));
if (error)
goto out;
if (changing_sysflags) {
error = UFS_WAPBL_BEGIN(vp->v_mount);
if (error)
goto out;
ip->i_flags = vap->va_flags;
DIP_ASSIGN(ip, flags, ip->i_flags);
} else {
error = UFS_WAPBL_BEGIN(vp->v_mount);
if (error)
goto out;
ip->i_flags &= SF_SETTABLE;
ip->i_flags |= (vap->va_flags & UF_SETTABLE);
DIP_ASSIGN(ip, flags, ip->i_flags);
}
ip->i_flag |= IN_CHANGE;
UFS_WAPBL_UPDATE(vp, NULL, NULL, 0);
UFS_WAPBL_END(vp->v_mount);
if (vap->va_flags & (IMMUTABLE | APPEND)) {
error = 0;
goto out;
}
}
if (ip->i_flags & (IMMUTABLE | APPEND)) {
error = EPERM;
goto out;
}
/*
* Go through the fields and update iff not VNOVAL.
*/
if (vap->va_uid != (uid_t)VNOVAL || vap->va_gid != (gid_t)VNOVAL) {
if (vp->v_mount->mnt_flag & MNT_RDONLY) {
error = EROFS;
goto out;
}
error = UFS_WAPBL_BEGIN(vp->v_mount);
if (error)
goto out;
error = ufs_chown(vp, vap->va_uid, vap->va_gid, cred, l);
UFS_WAPBL_END(vp->v_mount);
if (error)
goto out;
}
if (vap->va_size != VNOVAL) {
/*
* Disallow write attempts on read-only file systems;
* unless the file is a socket, fifo, or a block or
* character device resident on the file system.
*/
switch (vp->v_type) {
case VDIR:
error = EISDIR;
goto out;
case VCHR:
case VBLK:
case VFIFO:
break;
case VREG:
if (vp->v_mount->mnt_flag & MNT_RDONLY) {
error = EROFS;
goto out;
}
if ((ip->i_flags & SF_SNAPSHOT) != 0) {
error = EPERM;
goto out;
}
error = ufs_truncate(vp, vap->va_size, cred);
if (error)
goto out;
break;
default:
error = EOPNOTSUPP;
goto out;
}
}
ip = VTOI(vp);
if (vap->va_atime.tv_sec != VNOVAL || vap->va_mtime.tv_sec != VNOVAL ||
vap->va_birthtime.tv_sec != VNOVAL) {
if (vp->v_mount->mnt_flag & MNT_RDONLY) {
error = EROFS;
goto out;
}
if ((ip->i_flags & SF_SNAPSHOT) != 0) {
error = EPERM;
goto out;
}
error = kauth_authorize_vnode(cred, KAUTH_VNODE_WRITE_TIMES, vp,
NULL, genfs_can_chtimes(vp, vap->va_vaflags, ip->i_uid, cred));
if (error)
goto out;
error = UFS_WAPBL_BEGIN(vp->v_mount);
if (error)
goto out;
if (vap->va_atime.tv_sec != VNOVAL)
if (!(vp->v_mount->mnt_flag & MNT_NOATIME))
ip->i_flag |= IN_ACCESS;
if (vap->va_mtime.tv_sec != VNOVAL) {
ip->i_flag |= IN_CHANGE | IN_UPDATE;
if (vp->v_mount->mnt_flag & MNT_RELATIME)
ip->i_flag |= IN_ACCESS;
}
if (vap->va_birthtime.tv_sec != VNOVAL &&
ip->i_ump->um_fstype == UFS2) {
ip->i_ffs2_birthtime = vap->va_birthtime.tv_sec;
ip->i_ffs2_birthnsec = vap->va_birthtime.tv_nsec;
}
error = UFS_UPDATE(vp, &vap->va_atime, &vap->va_mtime, 0);
UFS_WAPBL_END(vp->v_mount);
if (error)
goto out;
}
error = 0;
if (vap->va_mode != (mode_t)VNOVAL) {
if (vp->v_mount->mnt_flag & MNT_RDONLY) {
error = EROFS;
goto out;
}
if ((ip->i_flags & SF_SNAPSHOT) != 0 &&
(vap->va_mode & (S_IXUSR | S_IWUSR | S_IXGRP | S_IWGRP |
S_IXOTH | S_IWOTH))) {
error = EPERM;
goto out;
}
error = UFS_WAPBL_BEGIN(vp->v_mount);
if (error)
goto out;
error = ufs_chmod(vp, (int)vap->va_mode, cred, l);
UFS_WAPBL_END(vp->v_mount);
}
VN_KNOTE(vp, NOTE_ATTRIB);
out:
fstrans_done(vp->v_mount);
return (error);
}
int
v7fs_setattr(void *v)
{
struct vop_setattr_args /* {
struct vnode *a_vp;
struct vattr *a_vap;
kauth_cred_t a_cred;
struct proc *p;
} */ *ap = v;
struct vnode *vp = ap->a_vp;
struct vattr *vap = ap->a_vap;
struct v7fs_node *v7node = vp->v_data;
struct v7fs_self *fs = v7node->v7fsmount->core;
struct v7fs_inode *inode = &v7node->inode;
kauth_cred_t cred = ap->a_cred;
struct timespec *acc, *mod;
int error = 0;
acc = mod = NULL;
DPRINTF("\n");
if (vp->v_mount->mnt_flag & MNT_RDONLY) {
switch (vp->v_type) {
default:
/* special file is always writable. */
break;
case VDIR:
case VLNK:
case VREG:
DPRINTF("read-only mount\n");
return EROFS;
}
}
if ((vap->va_type != VNON) || (vap->va_nlink != VNOVAL) ||
(vap->va_fsid != VNOVAL) || (vap->va_fileid != VNOVAL) ||
(vap->va_blocksize != VNOVAL) || (vap->va_rdev != VNOVAL) ||
((int)vap->va_bytes != VNOVAL) || (vap->va_gen != VNOVAL)) {
DPRINTF("invalid request\n");
return EINVAL;
}
/* File pointer mode. */
if (vap->va_flags != VNOVAL) {
error = kauth_authorize_vnode(cred, KAUTH_VNODE_WRITE_FLAGS,
vp, NULL, genfs_can_chflags(cred, vp->v_type, inode->uid,
false));
if (error)
return error;
inode->append_mode = vap->va_flags & SF_APPEND;
}
/* File size change. */
if ((vap->va_size != VNOVAL) && (vp->v_type == VREG)) {
error = v7fs_datablock_size_change(fs, vap->va_size, inode);
if (error == 0)
uvm_vnp_setsize(vp, vap->va_size);
}
uid_t uid = inode->uid;
gid_t gid = inode->gid;
if (vap->va_uid != (uid_t)VNOVAL) {
uid = vap->va_uid;
error = kauth_authorize_vnode(cred,
KAUTH_VNODE_CHANGE_OWNERSHIP, vp, NULL,
genfs_can_chown(cred, inode->uid, inode->gid, uid,
gid));
if (error)
return error;
inode->uid = uid;
}
if (vap->va_gid != (uid_t)VNOVAL) {
gid = vap->va_gid;
error = kauth_authorize_vnode(cred,
KAUTH_VNODE_CHANGE_OWNERSHIP, vp, NULL,
genfs_can_chown(cred, inode->uid, inode->gid, uid,
gid));
if (error)
return error;
inode->gid = gid;
}
if (vap->va_mode != (mode_t)VNOVAL) {
mode_t mode = vap->va_mode;
error = kauth_authorize_vnode(cred, KAUTH_VNODE_WRITE_SECURITY,
vp, NULL, genfs_can_chmod(vp->v_type, cred, inode->uid, inode->gid,
mode));
if (error) {
return error;
}
v7fs_inode_chmod(inode, mode);
}
if ((vap->va_atime.tv_sec != VNOVAL) ||
(vap->va_mtime.tv_sec != VNOVAL) ||
(vap->va_ctime.tv_sec != VNOVAL)) {
error = kauth_authorize_vnode(cred, KAUTH_VNODE_WRITE_TIMES, vp,
NULL, genfs_can_chtimes(vp, vap->va_vaflags, inode->uid,
cred));
if (error)
return error;
if (vap->va_atime.tv_sec != VNOVAL) {
acc = &vap->va_atime;
}
if (vap->va_mtime.tv_sec != VNOVAL) {
mod = &vap->va_mtime;
v7node->update_mtime = true;
}
if (vap->va_ctime.tv_sec != VNOVAL) {
v7node->update_ctime = true;
}
}
v7node->update_atime = true;
v7fs_update(vp, acc, mod, 0);
return error;
}
