int smbfs_writevnode(struct vnode *vp, struct uio *uiop, struct ucred *cred, int ioflag) { struct smbmount *smp = VTOSMBFS(vp); struct smbnode *np = VTOSMB(vp); struct smb_cred *scred; struct thread *td; int error = 0; if (vp->v_type != VREG) { SMBERROR("vn types other than VREG unsupported !\n"); return EIO; } SMBVDEBUG("ofs=%jd,resid=%zd\n", (intmax_t)uiop->uio_offset, uiop->uio_resid); if (uiop->uio_offset < 0) return EINVAL; /* if (uiop->uio_offset + uiop->uio_resid > smp->nm_maxfilesize) return (EFBIG);*/ td = uiop->uio_td; if (ioflag & (IO_APPEND | IO_SYNC)) { if (np->n_flag & NMODIFIED) { smbfs_attr_cacheremove(vp); error = smbfs_vinvalbuf(vp, td); if (error) return error; } if (ioflag & IO_APPEND) { #ifdef notyet /* * File size can be changed by another client */ smbfs_attr_cacheremove(vp); error = VOP_GETATTR(vp, &vattr, cred); if (error) return (error); #endif uiop->uio_offset = np->n_size; } } if (uiop->uio_resid == 0) return 0; if (vn_rlimit_fsize(vp, uiop, td)) return (EFBIG); scred = smbfs_malloc_scred(); smb_makescred(scred, td, cred); error = smb_write(smp->sm_share, np->n_fid, uiop, scred); smbfs_free_scred(scred); SMBVDEBUG("after: ofs=%jd,resid=%zd\n", (intmax_t)uiop->uio_offset, uiop->uio_resid); if (!error) { if (uiop->uio_offset > np->n_size) { np->n_size = uiop->uio_offset; vnode_pager_setsize(vp, np->n_size); } } return error; }
int smbfs_readvnode(struct vnode *vp, struct uio *uiop, struct ucred *cred) { struct smbmount *smp = VFSTOSMBFS(vp->v_mount); struct smbnode *np = VTOSMB(vp); struct thread *td; struct vattr vattr; struct smb_cred scred; int error, lks; /* * Protect against method which is not supported for now */ if (uiop->uio_segflg == UIO_NOCOPY) return EOPNOTSUPP; if (vp->v_type != VREG && vp->v_type != VDIR) { SMBFSERR("vn types other than VREG or VDIR are unsupported !\n"); return EIO; } if (uiop->uio_resid == 0) return 0; if (uiop->uio_offset < 0) return EINVAL; /* if (uiop->uio_offset + uiop->uio_resid > smp->nm_maxfilesize) return EFBIG;*/ td = uiop->uio_td; if (vp->v_type == VDIR) { lks = LK_EXCLUSIVE;/*lockstatus(vp->v_vnlock, td);*/ if (lks == LK_SHARED) vn_lock(vp, LK_UPGRADE | LK_RETRY, td); error = smbfs_readvdir(vp, uiop, cred); if (lks == LK_SHARED) vn_lock(vp, LK_DOWNGRADE | LK_RETRY, td); return error; } /* biosize = SSTOCN(smp->sm_share)->sc_txmax;*/ if (np->n_flag & NMODIFIED) { smbfs_attr_cacheremove(vp); error = VOP_GETATTR(vp, &vattr, cred, td); if (error) return error; np->n_mtime.tv_sec = vattr.va_mtime.tv_sec; } else { error = VOP_GETATTR(vp, &vattr, cred, td); if (error) return error; if (np->n_mtime.tv_sec != vattr.va_mtime.tv_sec) { error = smbfs_vinvalbuf(vp, td); if (error) return error; np->n_mtime.tv_sec = vattr.va_mtime.tv_sec; } } smb_makescred(&scred, td, cred); return smb_read(smp->sm_share, np->n_fid, uiop, &scred); }
int smbfs_writevnode(struct vnode *vp, struct uio *uiop, struct ucred *cred, int ioflag) { struct thread *td; struct smbmount *smp = VTOSMBFS(vp); struct smbnode *np = VTOSMB(vp); struct smb_cred scred; int error = 0; if (vp->v_type != VREG) { SMBERROR("vn types other than VREG unsupported !\n"); return EIO; } SMBVDEBUG("ofs=%d,resid=%d\n",(int)uiop->uio_offset, uiop->uio_resid); if (uiop->uio_offset < 0) return EINVAL; td = uiop->uio_td; if (ioflag & (IO_APPEND | IO_SYNC)) { if (np->n_flag & NMODIFIED) { smbfs_attr_cacheremove(vp); error = smbfs_vinvalbuf(vp, V_SAVE, 1); if (error) return error; } if (ioflag & IO_APPEND) { #if 0 /* notyet */ /* * File size can be changed by another client */ smbfs_attr_cacheremove(vp); error = VOP_GETATTR(vp, &vattr); if (error) return (error); #endif uiop->uio_offset = np->n_size; } } if (uiop->uio_resid == 0) return 0; if (td->td_proc && uiop->uio_offset + uiop->uio_resid > td->td_proc->p_rlimit[RLIMIT_FSIZE].rlim_cur) { lwpsignal(td->td_proc, td->td_lwp, SIGXFSZ); return EFBIG; } smb_makescred(&scred, td, cred); error = smb_write(smp->sm_share, np->n_fid, uiop, &scred); SMBVDEBUG("after: ofs=%d,resid=%d\n",(int)uiop->uio_offset, uiop->uio_resid); if (!error) { if (uiop->uio_offset > np->n_size) { np->n_size = uiop->uio_offset; vnode_pager_setsize(vp, np->n_size); } } return error; }
/* * Close called. */ int smbfs_close(void *v) { struct vop_close_args /* { struct vnodeop_desc *a_desc; struct vnode *a_vp; int a_fflag; kauth_cred_t a_cred; } */ *ap = v; int error; struct lwp *l = curlwp; struct vnode *vp = ap->a_vp; struct smbnode *np = VTOSMB(vp); /* Flush all file data */ error = smbfs_vinvalbuf(vp, V_SAVE, ap->a_cred, l, 1); if (error) return (error); /* * We must close the directory lookup context now, so that * later directory changes would be properly detected. * Ideally, the lookup routines should handle such case, and * the context would be removed only in smbfs_inactive(). */ if (vp->v_type == VDIR && (np->n_flag & NOPEN) != 0) { struct smb_share *ssp = np->n_mount->sm_share; struct smb_cred scred; smb_makescred(&scred, l, ap->a_cred); if (np->n_dirseq != NULL) { smbfs_findclose(np->n_dirseq, &scred); np->n_dirseq = NULL; } if (SMB_CAPS(SSTOVC(ssp)) & SMB_CAP_NT_SMBS) smbfs_smb_close(ssp, np->n_fid, &np->n_mtime, &scred); np->n_flag &= ~NOPEN; smbfs_attr_cacheremove(vp); } return (0); }
/* ARGSUSED */ int smbfs_open(void *v) { struct vop_open_args /* { struct vnode *a_vp; int a_mode; kauth_cred_t a_cred; } */ *ap = v; struct lwp *l = curlwp; struct vnode *vp = ap->a_vp; struct smbnode *np = VTOSMB(vp); struct smb_cred scred; struct vattr vattr; u_int32_t sv_caps = SMB_CAPS(SSTOVC(np->n_mount->sm_share)); int error, accmode; SMBVDEBUG("%.*s,%d\n", (int) np->n_nmlen, np->n_name, (np->n_flag & NOPEN) != 0); if (vp->v_type != VREG && vp->v_type != VDIR) { SMBFSERR("open eacces vtype=%d\n", vp->v_type); return EACCES; } if (vp->v_type == VDIR) { if ((sv_caps & SMB_CAP_NT_SMBS) == 0) { np->n_flag |= NOPEN; return 0; } goto do_open; /* skip 'modified' check */ } if (np->n_flag & NMODIFIED) { if ((error = smbfs_vinvalbuf(vp, V_SAVE, ap->a_cred, l, 1)) == EINTR) return error; smbfs_attr_cacheremove(vp); error = VOP_GETATTR(vp, &vattr, ap->a_cred); if (error) return error; np->n_mtime.tv_sec = vattr.va_mtime.tv_sec; } else { error = VOP_GETATTR(vp, &vattr, ap->a_cred); if (error) return error; if (np->n_mtime.tv_sec != vattr.va_mtime.tv_sec) { error = smbfs_vinvalbuf(vp, V_SAVE, ap->a_cred, l, 1); if (error == EINTR) return error; np->n_mtime.tv_sec = vattr.va_mtime.tv_sec; } } do_open: if ((np->n_flag & NOPEN) != 0) return 0; smb_makescred(&scred, l, ap->a_cred); if (vp->v_type == VDIR) error = smbfs_smb_ntcreatex(np, SMB_SM_DENYNONE|SMB_AM_OPENREAD, &scred); else { /* * Use DENYNONE to give unixy semantics of permitting * everything not forbidden by permissions. Ie denial * is up to server with clients/openers needing to use * advisory locks for further control. */ accmode = SMB_SM_DENYNONE|SMB_AM_OPENREAD; if ((vp->v_mount->mnt_flag & MNT_RDONLY) == 0) accmode = SMB_SM_DENYNONE|SMB_AM_OPENRW; error = smbfs_smb_open(np, accmode, &scred); if (error) { if (ap->a_mode & FWRITE) return EACCES; error = smbfs_smb_open(np, SMB_SM_DENYNONE|SMB_AM_OPENREAD, &scred); } } if (!error) np->n_flag |= NOPEN; smbfs_attr_cacheremove(vp); return error; }