Annotation of sys/compat/linux/linux_resource.c, Revision 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: }
CVSweb