Annotation of sys/compat/linux/linux_resource.c, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: linux_resource.c,v 1.4 2003/06/03 20:49:28 deraadt Exp $ */
2:
3: /*
4: * Copyright (c) 2000 Niklas Hallqvist
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, BUT
21: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25: * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26: */
27:
28: /*
29: * Linux "resource" syscall emulation
30: */
31:
32: #include <sys/param.h>
33: #include <sys/systm.h>
34: #include <sys/mount.h>
35: #include <sys/proc.h>
36: #include <sys/resource.h>
37: #include <sys/resourcevar.h>
38: #include <sys/syscallargs.h>
39:
40: #include <compat/linux/linux_types.h>
41: #include <compat/linux/linux_resource.h>
42: #include <compat/linux/linux_signal.h>
43: #include <compat/linux/linux_syscallargs.h>
44:
45: /* linux_resource.c */
46: int linux_to_bsd_rlimit(u_int);
47: int linux_dogetrlimit(struct proc *, void *, register_t *, rlim_t);
48:
49: static u_int linux_to_bsd_rlimit_map[] = {
50: RLIMIT_CPU,
51: RLIMIT_FSIZE,
52: RLIMIT_DATA,
53: RLIMIT_STACK,
54: RLIMIT_CORE,
55: RLIMIT_RSS,
56: RLIMIT_NPROC,
57: RLIMIT_NOFILE,
58: RLIMIT_MEMLOCK,
59: RLIM_NLIMITS /* LINUX_RLIMIT_AS not supported */
60: };
61:
62: int
63: linux_to_bsd_rlimit(which)
64: u_int which;
65: {
66: if (which >= LINUX_RLIM_NLIMITS)
67: return (RLIM_NLIMITS);
68: return (linux_to_bsd_rlimit_map[which]);
69: }
70:
71: int
72: linux_sys_setrlimit(p, v, retval)
73: struct proc *p;
74: void *v;
75: register_t *retval;
76: {
77: struct linux_sys_setrlimit_args /* {
78: syscallarg(u_int) which;
79: syscallarg(struct linux_rlimit *) rlp;
80: } */ *uap = v;
81:
82: SCARG(uap, which) = linux_to_bsd_rlimit(SCARG(uap, which));
83: if (SCARG(uap, which) == RLIM_NLIMITS)
84: return (EINVAL);
85: return (compat_43_sys_setrlimit(p, v, retval));
86: }
87:
88: int
89: linux_dogetrlimit(p, v, retval, max)
90: struct proc *p;
91: void *v;
92: register_t *retval;
93: rlim_t max;
94: {
95: struct linux_sys_getrlimit_args /* {
96: syscallarg(u_int) which;
97: syscallarg(struct linux_rlimit *) rlp;
98: } */ *uap = v;
99: u_int which;
100: struct linux_rlimit rlim;
101:
102: which = linux_to_bsd_rlimit(SCARG(uap, which));
103: if (which == RLIM_NLIMITS)
104: return (EINVAL);
105:
106: rlim.rlim_cur = MIN(p->p_rlimit[which].rlim_cur, max);
107: rlim.rlim_max = MIN(p->p_rlimit[which].rlim_max, max);
108: return (copyout(&rlim, SCARG(uap, rlp), sizeof rlim));
109: }
110:
111: int
112: linux_sys_getrlimit(p, v, retval)
113: struct proc *p;
114: void *v;
115: register_t *retval;
116: {
117: return (linux_dogetrlimit(p, v, retval, LINUX_OLD_RLIM_INFINITY));
118: }
119:
120: int
121: linux_sys_ugetrlimit(p, v, retval)
122: struct proc *p;
123: void *v;
124: register_t *retval;
125: {
126: return (linux_dogetrlimit(p, v, retval, LINUX_RLIM_INFINITY));
127: }
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