1 /* 2 * Copyright (c) 1993 Jan-Simon Pendry 3 * Copyright (c) 1993 4 * The Regents of the University of California. All rights reserved. 5 * 6 * This code is derived from software contributed to Berkeley by 7 * Jan-Simon Pendry. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed by the University of 20 * California, Berkeley and its contributors. 21 * 4. Neither the name of the University nor the names of its contributors 22 * may be used to endorse or promote products derived from this software 23 * without specific prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35 * SUCH DAMAGE. 36 * 37 * $FreeBSD: src/sys/miscfs/procfs/procfs_type.c,v 1.6 1999/08/28 00:46:56 peter Exp $ 38 * $DragonFly: src/sys/vfs/procfs/procfs_type.c,v 1.5 2007/02/19 01:14:24 corecode Exp $ 39 */ 40 41 #include <sys/param.h> 42 #include <sys/systm.h> 43 #include <sys/proc.h> 44 #include <sys/sysent.h> 45 #include <sys/vnode.h> 46 #include <vfs/procfs/procfs.h> 47 48 int 49 procfs_dotype(struct proc *curp, struct lwp *lp, struct pfsnode *pfs, 50 struct uio *uio) 51 { 52 struct proc *p = lp->lwp_proc; 53 int len; 54 int error; 55 /* 56 * buffer for emulation type 57 */ 58 char mebuffer[256]; 59 char *none = "Not Available"; 60 61 if (uio->uio_rw != UIO_READ) 62 return (EOPNOTSUPP); 63 64 if (uio->uio_offset != 0) 65 return (0); 66 67 if (p && p->p_sysent && p->p_sysent->sv_name) { 68 len = strlen(p->p_sysent->sv_name); 69 bcopy(p->p_sysent->sv_name, mebuffer, len); 70 } else { 71 len = strlen(none); 72 bcopy(none, mebuffer, len); 73 } 74 mebuffer[len++] = '\n'; 75 error = uiomove(mebuffer, len, uio); 76 return error; 77 } 78 79 int 80 procfs_validtype(struct lwp *lp) 81 { 82 return ((lp->lwp_proc->p_flag & P_SYSTEM) == 0); 83 } 84