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. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 * $FreeBSD: src/sys/miscfs/procfs/procfs_type.c,v 1.6 1999/08/28 00:46:56 peter Exp $
34 */
35
36 #include <sys/param.h>
37 #include <sys/systm.h>
38 #include <sys/uio.h>
39 #include <sys/proc.h>
40 #include <sys/sysent.h>
41 #include <sys/vnode.h>
42 #include <vfs/procfs/procfs.h>
43
44 int
procfs_dotype(struct proc * curp,struct lwp * lp,struct pfsnode * pfs,struct uio * uio)45 procfs_dotype(struct proc *curp, struct lwp *lp, struct pfsnode *pfs,
46 struct uio *uio)
47 {
48 struct proc *p = lp->lwp_proc;
49 int len;
50 int error;
51 /*
52 * buffer for emulation type
53 */
54 char mebuffer[256];
55 char *none = "Not Available";
56
57 if (uio->uio_rw != UIO_READ)
58 return (EOPNOTSUPP);
59
60 if (uio->uio_offset != 0)
61 return (0);
62
63 if (p && p->p_sysent && p->p_sysent->sv_name) {
64 len = strlen(p->p_sysent->sv_name);
65 bcopy(p->p_sysent->sv_name, mebuffer, len);
66 } else {
67 len = strlen(none);
68 bcopy(none, mebuffer, len);
69 }
70 mebuffer[len++] = '\n';
71 error = uiomove(mebuffer, len, uio);
72 return error;
73 }
74
75 int
procfs_validtype(struct lwp * lp)76 procfs_validtype(struct lwp *lp)
77 {
78 return ((lp->lwp_proc->p_flags & P_SYSTEM) == 0);
79 }
80