1 /* $NetBSD: netbsd32_fd.c,v 1.1 2018/12/24 21:27:05 mrg Exp $ */
2
3 /*
4 * Copyright (c) 1998, 2001, 2008, 2018 Matthew R. Green
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 *
28 * from: NetBSD: netbsd32_netbsd.c,v 1.221 2018/12/24 20:44:39 mrg Exp
29 */
30
31 #include <sys/cdefs.h>
32 __KERNEL_RCSID(0, "$NetBSD: netbsd32_fd.c,v 1.1 2018/12/24 21:27:05 mrg Exp $");
33
34 #include <sys/param.h>
35 #include <sys/systm.h>
36 #include <sys/filedesc.h>
37 #include <sys/namei.h>
38 #include <sys/vnode.h>
39 #include <sys/vfs_syscalls.h>
40 #include <sys/kauth.h>
41
42 #include <compat/netbsd32/netbsd32.h>
43 #include <compat/netbsd32/netbsd32_syscall.h>
44 #include <compat/netbsd32/netbsd32_syscallargs.h>
45 #include <compat/netbsd32/netbsd32_conv.h>
46
47
48 int
netbsd32___getfh30(struct lwp * l,const struct netbsd32___getfh30_args * uap,register_t * retval)49 netbsd32___getfh30(struct lwp *l, const struct netbsd32___getfh30_args *uap, register_t *retval)
50 {
51 /* {
52 syscallarg(const netbsd32_charp) fname;
53 syscallarg(netbsd32_fhandlep_t) fhp;
54 syscallarg(netbsd32_size_tp) fh_size;
55 } */
56 struct vnode *vp;
57 fhandle_t *fh;
58 int error;
59 struct pathbuf *pb;
60 struct nameidata nd;
61 netbsd32_size_t usz32, sz32;
62 size_t sz;
63
64 /*
65 * Must be super user
66 */
67 error = kauth_authorize_system(l->l_cred, KAUTH_SYSTEM_FILEHANDLE,
68 0, NULL, NULL, NULL);
69 if (error)
70 return error;
71
72 error = pathbuf_copyin(SCARG_P32(uap, fname), &pb);
73 if (error) {
74 return error;
75 }
76
77 NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF | TRYEMULROOT, pb);
78 error = namei(&nd);
79 if (error) {
80 pathbuf_destroy(pb);
81 return error;
82 }
83 vp = nd.ni_vp;
84 pathbuf_destroy(pb);
85
86 error = vfs_composefh_alloc(vp, &fh);
87 vput(vp);
88 if (error != 0) {
89 return error;
90 }
91 error = copyin(SCARG_P32(uap, fh_size), &usz32, sizeof(usz32));
92 if (error != 0) {
93 goto out;
94 }
95 sz = FHANDLE_SIZE(fh);
96 sz32 = sz;
97
98 error = copyout(&sz32, SCARG_P32(uap, fh_size), sizeof(sz32));
99 if (error != 0) {
100 goto out;
101 }
102 if (usz32 >= sz32) {
103 error = copyout(fh, SCARG_P32(uap, fhp), sz);
104 } else {
105 error = E2BIG;
106 }
107 out:
108 vfs_composefh_free(fh);
109 return error;
110 }
111
112 int
netbsd32_pipe2(struct lwp * l,const struct netbsd32_pipe2_args * uap,register_t * retval)113 netbsd32_pipe2(struct lwp *l, const struct netbsd32_pipe2_args *uap,
114 register_t *retval)
115 {
116 /* {
117 syscallarg(netbsd32_intp) fildes;
118 syscallarg(int) flags;
119 } */
120 int fd[2], error;
121
122 error = pipe1(l, fd, SCARG(uap, flags));
123 if (error != 0)
124 return error;
125
126 error = copyout(fd, SCARG_P32(uap, fildes), sizeof(fd));
127 if (error != 0)
128 return error;
129
130 retval[0] = 0;
131 return 0;
132 }
133