Annotation of sys/compat/freebsd/freebsd_misc.c, Revision 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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