Annotation of sys/compat/freebsd/freebsd_misc.c, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: freebsd_misc.c,v 1.10 2007/04/05 15:33:42 tedu Exp $ */
2: /* $NetBSD: freebsd_misc.c,v 1.2 1996/05/03 17:03:10 christos Exp $ */
3:
4: /*
5: * Copyright (c) 1995 Frank van der Linden
6: * All rights reserved.
7: *
8: * Redistribution and use in source and binary forms, with or without
9: * modification, are permitted provided that the following conditions
10: * are met:
11: * 1. Redistributions of source code must retain the above copyright
12: * notice, this list of conditions and the following disclaimer.
13: * 2. Redistributions in binary form must reproduce the above copyright
14: * notice, this list of conditions and the following disclaimer in the
15: * documentation and/or other materials provided with the distribution.
16: * 3. All advertising materials mentioning features or use of this software
17: * must display the following acknowledgement:
18: * This product includes software developed for the NetBSD Project
19: * by Frank van der Linden
20: * 4. The name of the author may not be used to endorse or promote products
21: * derived from this software without specific prior written permission
22: *
23: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
24: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
25: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
26: * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
27: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
28: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
29: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
30: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
31: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
32: * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
33: */
34:
35: /*
36: * FreeBSD compatibility module. Try to deal with various FreeBSD system calls.
37: */
38:
39: #include <sys/param.h>
40: #include <sys/systm.h>
41: #include <sys/proc.h>
42: #include <sys/mount.h>
43: #include <sys/file.h>
44: #include <sys/dirent.h>
45: #include <sys/filedesc.h>
46: #include <sys/mman.h>
47: #include <sys/vnode.h>
48:
49: #include <sys/syscallargs.h>
50:
51: #include <compat/freebsd/freebsd_signal.h>
52: #include <compat/freebsd/freebsd_syscallargs.h>
53: #include <compat/freebsd/freebsd_util.h>
54: #include <compat/freebsd/freebsd_rtprio.h>
55:
56: #include <compat/common/compat_dir.h>
57:
58: /* just a place holder */
59:
60: int
61: freebsd_sys_rtprio(p, v, retval)
62: struct proc *p;
63: void *v;
64: register_t *retval;
65: {
66: #ifdef notyet
67: struct freebsd_sys_rtprio_args /* {
68: syscallarg(int) function;
69: syscallarg(pid_t) pid;
70: syscallarg(struct freebsd_rtprio *) rtp;
71: } */ *uap = v;
72: #endif
73:
74: return ENOSYS; /* XXX */
75: }
76:
77: /*
78: * Argh.
79: * The syscalls.master mechanism cannot handle a system call that is in
80: * two spots in the table.
81: */
82: int
83: freebsd_sys_poll2(p, v, retval)
84: struct proc *p;
85: void *v;
86: register_t *retval;
87: {
88: return (sys_poll(p, v, retval));
89: }
90:
91: /*
92: * Our madvise is currently dead (always returns EOPNOTSUPP).
93: */
94: int
95: freebsd_sys_madvise(p, v, retval)
96: struct proc *p;
97: void *v;
98: register_t *retval;
99: {
100: return (0);
101: }
102:
103:
104: int freebsd_readdir_callback(void *, struct dirent *, off_t);
105:
106: struct freebsd_readdir_callback_args {
107: caddr_t outp;
108: int resid;
109: };
110:
111: int
112: freebsd_readdir_callback(void *arg, struct dirent *bdp, off_t cookie)
113: {
114: struct freebsd_readdir_callback_args *cb = arg;
115: struct dirent idb;
116: int error;
117:
118: if (cb->resid < bdp->d_reclen)
119: return (ENOMEM);
120: idb.d_fileno = bdp->d_fileno;
121: idb.d_reclen = bdp->d_reclen;
122: idb.d_type = bdp->d_type;
123: idb.d_namlen = bdp->d_namlen;
124: strlcpy(idb.d_name, bdp->d_name, sizeof(idb.d_name));
125:
126: if ((error = copyout((caddr_t)&idb, cb->outp, bdp->d_reclen)))
127: return (error);
128: cb->outp += bdp->d_reclen;
129: cb->resid -= bdp->d_reclen;
130:
131: return (0);
132: }
133:
134: int
135: freebsd_sys_getdents(struct proc *p, void *v, register_t *retval)
136: {
137: struct freebsd_sys_getdents_args /* {
138: syscallarg(int) fd;
139: syscallarg(void *) dirent;
140: syscallarg(unsigned) count;
141: } */ *uap = v;
142: struct vnode *vp;
143: struct file *fp;
144: int error;
145: struct freebsd_readdir_callback_args args;
146:
147: if ((error = getvnode(p->p_fd, SCARG(uap, fd), &fp)) != 0)
148: return (error);
149:
150: vp = (struct vnode *)fp->f_data;
151:
152: args.resid = SCARG(uap, count);
153: args.outp = (caddr_t)SCARG(uap, dirent);
154:
155: error = readdir_with_callback(fp, &fp->f_offset, args.resid,
156: freebsd_readdir_callback, &args);
157:
158: FRELE(fp);
159: if (error)
160: return (error);
161:
162: *retval = SCARG(uap, count) - args.resid;
163: return (0);
164: }
165:
166: #define FBSD_MAP_NOCORE 0x20000
167: int
168: freebsd_sys_mmap(struct proc *p, void *v, register_t *retval)
169: {
170: struct freebsd_sys_mmap_args /* {
171: syscallarg(caddr_t) addr;
172: syscallarg(size_t) len;
173: syscallarg(int) prot;
174: syscallarg(int) flags;
175: syscallarg(int) fd;
176: syscallarg(long) pad;
177: syscallarg(off_t) pos;
178: } */ *uap = v;
179: SCARG(uap, flags) &= ~FBSD_MAP_NOCORE;
180: return (sys_mmap(p, uap, retval));
181: }
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