sys/compat/linux32/common/linux32_wait.c

   1 /*      $NetBSD: linux32_wait.c,v 1.10 2009/01/17 22:28:53 njoly Exp $ */
   2
   3 /*-
   4  * Copyright (c) 2006 Emmanuel Dreyfus, all rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  * 3. All advertising materials mentioning features or use of this software
  15  *    must display the following acknowledgement:
  16  *      This product includes software developed by Emmanuel Dreyfus
  17  * 4. The name of the author may not be used to endorse or promote
  18  *    products derived from this software without specific prior written
  19  *    permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE THE AUTHOR AND CONTRIBUTORS ``AS IS''
  22  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  23  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  24  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
  25  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  26  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  27  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  28  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  29  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  30  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  31  * POSSIBILITY OF SUCH DAMAGE.
  32  */
  33
  34 #include <sys/cdefs.h>
  35
  36 __KERNEL_RCSID(0, "$NetBSD: linux32_wait.c,v 1.10 2009/01/17 22:28:53 njoly Exp $");
  37
  38 #include <sys/types.h>
  39 #include <sys/param.h>
  40 #include <sys/fstypes.h>
  41 #include <sys/signal.h>
  42 #include <sys/dirent.h>
  43 #include <sys/kernel.h>
  44 #include <sys/fcntl.h>
  45 #include <sys/select.h>
  46 #include <sys/proc.h>
  47 #include <sys/ucred.h>
  48 #include <sys/swap.h>
  49 #include <sys/wait.h>
  50
  51 #include <machine/types.h>
  52
  53 #include <sys/syscallargs.h>
  54
  55 #include <compat/netbsd32/netbsd32.h>
  56 #include <compat/netbsd32/netbsd32_conv.h>
  57 #include <compat/netbsd32/netbsd32_syscallargs.h>
  58
  59 #include <compat/linux/common/linux_types.h>
  60 #include <compat/linux/common/linux_signal.h>
  61 #include <compat/linux/common/linux_machdep.h>
  62 #include <compat/linux/common/linux_misc.h>
  63 #include <compat/linux/common/linux_oldolduname.h>
  64 #include <compat/linux/common/linux_ipc.h>
  65 #include <compat/linux/common/linux_sem.h>
  66 #include <compat/linux/linux_syscallargs.h>
  67
  68 #include <compat/linux32/common/linux32_types.h>
  69 #include <compat/linux32/common/linux32_signal.h>
  70 #include <compat/linux32/common/linux32_machdep.h>
  71 #include <compat/linux32/common/linux32_sysctl.h>
  72 #include <compat/linux32/common/linux32_socketcall.h>
  73 #include <compat/linux32/linux32_syscallargs.h>
  74
  75 int
  76 linux32_sys_waitpid(struct lwp *l, const struct linux32_sys_waitpid_args *uap, register_t *retval)
  77 {
  78         /* {
  79                 syscallarg(int) pid;
  80                 syscallarg(netbsd32_intp) status;
  81                 syscallarg(int) options;
  82         } */
  83         struct linux32_sys_wait4_args ua;
  84
  85         SCARG(&ua, pid) = SCARG(uap, pid);
  86         SCARG(&ua, status) = SCARG(uap, status);
  87         SCARG(&ua, options) = SCARG(uap, options);
  88         NETBSD32PTR32(SCARG(&ua, rusage), NULL);
  89
  90         return linux32_sys_wait4(l, &ua, retval);
  91 }
  92
  93 int
  94 linux32_sys_wait4(struct lwp *l, const struct linux32_sys_wait4_args *uap, register_t *retval)
  95 {
  96         /* {
  97                 syscallarg(int) pid;
  98                 syscallarg(netbsd32_intp) status;
  99                 syscallarg(int) options;
 100                 syscallarg(netbsd32_rusage50p_t) rusage;
 101         } */
 102         int error, status, linux_options, options, pid;
 103         struct netbsd32_rusage50 ru32;
 104         struct rusage ru;
 105         proc_t *p;
 106
 107         linux_options = SCARG(uap, options);
 108         options = WOPTSCHECKED;
 109         if (linux_options & ~(LINUX_WAIT4_KNOWNFLAGS))
 110                 return EINVAL;
 111
 112         if (linux_options & LINUX_WAIT4_WNOHANG)
 113                 options |= WNOHANG;
 114         if (linux_options & LINUX_WAIT4_WUNTRACED)
 115                 options |= WUNTRACED;
 116         if (linux_options & LINUX_WAIT4_WALL)
 117                 options |= WALLSIG;
 118         if (linux_options & LINUX_WAIT4_WCLONE)
 119                 options |= WALTSIG;
 120
 121         pid = SCARG(uap, pid);
 122         error = do_sys_wait(&pid, &status, options,
 123             SCARG_P32(uap, rusage) != NULL ? &ru : NULL);
 124         retval[0] = pid;
 125         if (pid == 0)
 126                 return error;
 127
 128         p = curproc;
 129         mutex_enter(p->p_lock);
 130         sigdelset(&p->p_sigpend.sp_set, SIGCHLD);       /* XXXAD ksiginfo leak */
 131         mutex_exit(p->p_lock);
 132
 133         if (SCARG_P32(uap, rusage) != NULL) {
 134                 netbsd32_from_rusage50(&ru, &ru32);
 135                 error = copyout(&ru32, SCARG_P32(uap, rusage), sizeof(ru32));
 136         }
 137
 138         if (error == 0 && SCARG_P32(uap, status) != NULL) {
 139                 status = bsd_to_linux_wstat(status);
 140                 error = copyout(&status, SCARG_P32(uap, status), sizeof(status));
 141         }
 142
 143         return error;
 144 }