int
ncp_make_open(struct inode *i, int right)
{
struct nw_file_info *finfo;
if (i == NULL)
{
printk("ncp_make_open: got NULL inode\n");
return -EINVAL;
}
finfo = NCP_FINFO(i);
DPRINTK("ncp_make_open: dirent->opened = %d\n", finfo->opened);
lock_super(i->i_sb);
if (finfo->opened == 0)
{
finfo->access = -1;
/* tries max. rights */
if (ncp_open_create_file_or_subdir(NCP_SERVER(i),
NULL, NULL,
OC_MODE_OPEN, 0,
AR_READ | AR_WRITE,
finfo) == 0)
{
finfo->access = O_RDWR;
}
else if (ncp_open_create_file_or_subdir(NCP_SERVER(i),
NULL, NULL,
OC_MODE_OPEN, 0,
AR_READ,
finfo) == 0)
{
finfo->access = O_RDONLY;
}
}
unlock_super(i->i_sb);
if ( ((right == O_RDONLY) && ( (finfo->access == O_RDONLY)
|| (finfo->access == O_RDWR)))
|| ((right == O_WRONLY) && ( (finfo->access == O_WRONLY)
|| (finfo->access == O_RDWR)))
|| ((right == O_RDWR) && (finfo->access == O_RDWR)))
return 0;
return -EACCES;
}
/*
* nwfs_create call
* Create a regular file. On entry the directory to contain the file being
* created is locked. We must release before we return.
*
* nwfs_create(struct vnode *a_dvp, struct vnode **a_vpp,
* struct componentname *a_cnpl, struct vattr *a_vap)
*/
static int
nwfs_create(struct vop_old_create_args *ap)
{
struct vnode *dvp = ap->a_dvp;
struct vattr *vap = ap->a_vap;
struct vnode **vpp=ap->a_vpp;
struct componentname *cnp = ap->a_cnp;
struct vnode *vp = NULL;
int error = 0, fmode;
struct vattr vattr;
struct nwnode *np;
struct ncp_open_info no;
struct nwmount *nmp=VTONWFS(dvp);
ncpfid fid;
NCPVNDEBUG("\n");
*vpp = NULL;
if (vap->va_type == VSOCK)
return (EOPNOTSUPP);
if ((error = VOP_GETATTR(dvp, &vattr))) {
return (error);
}
fmode = AR_READ | AR_WRITE;
/* if (vap->va_vaflags & VA_EXCLUSIVE)
fmode |= AR_DENY_READ | AR_DENY_WRITE;*/
error = ncp_open_create_file_or_subdir(nmp,dvp,cnp->cn_namelen,cnp->cn_nameptr,
OC_MODE_CREATE | OC_MODE_OPEN | OC_MODE_REPLACE,
0, fmode, &no, cnp->cn_td, cnp->cn_cred);
if (!error) {
error = ncp_close_file(NWFSTOCONN(nmp), &no.fh, cnp->cn_td,cnp->cn_cred);
fid.f_parent = VTONW(dvp)->n_fid.f_id;
fid.f_id = no.fattr.dirEntNum;
error = nwfs_nget(VTOVFS(dvp), fid, &no.fattr, dvp, &vp);
if (!error) {
np = VTONW(vp);
np->opened = 0;
*vpp = vp;
}
}
return (error);
}
/*
* nwfs_mkdir call
*
* nwfs_mkdir(struct vnode *a_dvp, struct vnode **a_vpp,
* struct componentname *a_cnp, struct vattr *a_vap)
*/
static int
nwfs_mkdir(struct vop_old_mkdir_args *ap)
{
struct vnode *dvp = ap->a_dvp;
/* struct vattr *vap = ap->a_vap;*/
struct componentname *cnp = ap->a_cnp;
int len=cnp->cn_namelen;
struct ncp_open_info no;
struct vnode *newvp = NULL;
ncpfid fid;
int error = 0;
struct vattr vattr;
char *name=cnp->cn_nameptr;
if ((error = VOP_GETATTR(dvp, &vattr))) {
return (error);
}
if ((name[0] == '.') && ((len == 1) || ((len == 2) && (name[1] == '.')))) {
return EEXIST;
}
if (ncp_open_create_file_or_subdir(VTONWFS(dvp),dvp, cnp->cn_namelen,
cnp->cn_nameptr,OC_MODE_CREATE, aDIR, 0xffff,
&no, cnp->cn_td, cnp->cn_cred) != 0) {
error = EACCES;
} else {
error = 0;
}
if (!error) {
fid.f_parent = VTONW(dvp)->n_fid.f_id;
fid.f_id = no.fattr.dirEntNum;
error = nwfs_nget(VTOVFS(dvp), fid, &no.fattr, dvp, &newvp);
if (!error) {
newvp->v_type = VDIR;
*ap->a_vpp = newvp;
}
}
return (error);
}
/*
* Open a file with the specified read/write mode.
*/
int ncp_make_open(struct inode *inode, int right)
{
int error;
int access;
error = -EINVAL;
if (!inode) {
pr_err("%s: got NULL inode\n", __func__);
goto out;
}
ncp_dbg(1, "opened=%d, volume # %u, dir entry # %u\n",
atomic_read(&NCP_FINFO(inode)->opened),
NCP_FINFO(inode)->volNumber,
NCP_FINFO(inode)->dirEntNum);
error = -EACCES;
mutex_lock(&NCP_FINFO(inode)->open_mutex);
if (!atomic_read(&NCP_FINFO(inode)->opened)) {
struct ncp_entry_info finfo;
int result;
/* tries max. rights */
finfo.access = O_RDWR;
result = ncp_open_create_file_or_subdir(NCP_SERVER(inode),
inode, NULL, OC_MODE_OPEN,
0, AR_READ | AR_WRITE, &finfo);
if (!result)
goto update;
/* RDWR did not succeeded, try readonly or writeonly as requested */
switch (right) {
case O_RDONLY:
finfo.access = O_RDONLY;
result = ncp_open_create_file_or_subdir(NCP_SERVER(inode),
inode, NULL, OC_MODE_OPEN,
0, AR_READ, &finfo);
break;
case O_WRONLY:
finfo.access = O_WRONLY;
result = ncp_open_create_file_or_subdir(NCP_SERVER(inode),
inode, NULL, OC_MODE_OPEN,
0, AR_WRITE, &finfo);
break;
}
if (result) {
ncp_vdbg("failed, result=%d\n", result);
goto out_unlock;
}
/*
* Update the inode information.
*/
update:
ncp_update_inode(inode, &finfo);
atomic_set(&NCP_FINFO(inode)->opened, 1);
}
access = NCP_FINFO(inode)->access;
ncp_vdbg("file open, access=%x\n", access);
if (access == right || access == O_RDWR) {
atomic_inc(&NCP_FINFO(inode)->opened);
error = 0;
}
out_unlock:
mutex_unlock(&NCP_FINFO(inode)->open_mutex);
out:
return error;
}
/* ARGSUSED */
static int
nwfs_open(struct vop_open_args *ap)
{
thread_t td = curthread; /* XXX */
struct vnode *vp = ap->a_vp;
int mode = ap->a_mode;
struct nwnode *np = VTONW(vp);
struct ncp_open_info no;
struct nwmount *nmp = VTONWFS(vp);
struct vattr vattr;
int error, nwm;
NCPVNDEBUG("%s,%d\n",np->n_name, np->opened);
if (vp->v_type != VREG && vp->v_type != VDIR) {
NCPFATAL("open vtype = %d\n", vp->v_type);
return (EACCES);
}
if (vp->v_type == VDIR) return 0; /* nothing to do now */
if (np->n_flag & NMODIFIED) {
if ((error = nwfs_vinvalbuf(vp, V_SAVE, 1)) == EINTR)
return (error);
np->n_atime = 0;
error = VOP_GETATTR(vp, &vattr);
if (error)
return (error);
np->n_mtime = vattr.va_mtime.tv_sec;
} else {
error = VOP_GETATTR(vp, &vattr);
if (error)
return (error);
if (np->n_mtime != vattr.va_mtime.tv_sec) {
if ((error = nwfs_vinvalbuf(vp, V_SAVE, 1)) == EINTR)
return (error);
np->n_mtime = vattr.va_mtime.tv_sec;
}
}
if (np->opened) {
np->opened++;
return (vop_stdopen(ap));
}
nwm = AR_READ;
if ((vp->v_mount->mnt_flag & MNT_RDONLY) == 0)
nwm |= AR_WRITE;
error = ncp_open_create_file_or_subdir(nmp, vp, 0, NULL, OC_MODE_OPEN,
0, nwm, &no, td, ap->a_cred);
if (error) {
if (mode & FWRITE)
return EACCES;
nwm = AR_READ;
error = ncp_open_create_file_or_subdir(nmp, vp, 0, NULL, OC_MODE_OPEN, 0,
nwm, &no, td, ap->a_cred);
}
np->n_atime = 0;
if (error == 0) {
np->opened++;
np->n_fh = no.fh;
np->n_origfh = no.origfh;
error = vop_stdopen(ap);
}
return (error);
}
int ncp_make_open(struct inode *inode, int right)
{
int error;
int access;
error = -EINVAL;
if (!inode) {
printk(KERN_ERR "ncp_make_open: got NULL inode\n");
goto out;
}
DPRINTK("ncp_make_open: opened=%d, volume # %u, dir entry # %u\n",
atomic_read(&NCP_FINFO(inode)->opened),
NCP_FINFO(inode)->volNumber,
NCP_FINFO(inode)->dirEntNum);
error = -EACCES;
mutex_lock(&NCP_FINFO(inode)->open_mutex);
if (!atomic_read(&NCP_FINFO(inode)->opened)) {
struct ncp_entry_info finfo;
int result;
/* */
finfo.access = O_RDWR;
result = ncp_open_create_file_or_subdir(NCP_SERVER(inode),
inode, NULL, OC_MODE_OPEN,
0, AR_READ | AR_WRITE, &finfo);
if (!result)
goto update;
/* */
switch (right) {
case O_RDONLY:
finfo.access = O_RDONLY;
result = ncp_open_create_file_or_subdir(NCP_SERVER(inode),
inode, NULL, OC_MODE_OPEN,
0, AR_READ, &finfo);
break;
case O_WRONLY:
finfo.access = O_WRONLY;
result = ncp_open_create_file_or_subdir(NCP_SERVER(inode),
inode, NULL, OC_MODE_OPEN,
0, AR_WRITE, &finfo);
break;
}
if (result) {
PPRINTK("ncp_make_open: failed, result=%d\n", result);
goto out_unlock;
}
/*
*/
update:
ncp_update_inode(inode, &finfo);
atomic_set(&NCP_FINFO(inode)->opened, 1);
}
access = NCP_FINFO(inode)->access;
PPRINTK("ncp_make_open: file open, access=%x\n", access);
if (access == right || access == O_RDWR) {
atomic_inc(&NCP_FINFO(inode)->opened);
error = 0;
}
out_unlock:
mutex_unlock(&NCP_FINFO(inode)->open_mutex);
out:
return error;
}
