1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 
  22 /*
  23  * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26 
  27 #pragma ident   "%Z%%M% %I%     %E% SMI"
  28 
  29 #include <sys/types.h>
  30 #include <unistd.h>
  31 #include <errno.h>
  32 #include <sys/lx_misc.h>
  33 
  34 int
  35 lx_getpgrp(void)
  36 {
  37         int ret;
  38 
  39         ret = getpgrp();
  40 
  41         /*
  42          * If the pgrp is that of the init process, return the value Linux
  43          * expects.
  44          */
  45         if (ret == zoneinit_pid)
  46                 return (LX_INIT_PGID);
  47 
  48         return ((ret == -1) ? -errno : ret);
  49 }
  50 
  51 int
  52 lx_getpgid(uintptr_t p1)
  53 {
  54         pid_t spid;
  55         int pid = (int)p1;
  56         int ret;
  57 
  58         if (pid < 0)
  59                 return (-ESRCH);
  60 
  61         /*
  62          * If the supplied pid matches that of the init process, return
  63          * the pgid Linux expects.
  64          */
  65         if (pid == zoneinit_pid)
  66                 return (LX_INIT_PGID);
  67 
  68         if ((ret = lx_lpid_to_spid(pid, &spid)) < 0)
  69                 return (ret);
  70 
  71         ret = getpgid(spid);
  72 
  73         /*
  74          * If the pgid is that of the init process, return the value Linux
  75          * expects.
  76          */
  77         if (ret == zoneinit_pid)
  78                 return (LX_INIT_PGID);
  79 
  80         return ((ret == -1) ? -errno : ret);
  81 }
  82 
  83 int
  84 lx_setpgid(uintptr_t p1, uintptr_t p2)
  85 {
  86         pid_t pid = (pid_t)p1;
  87         pid_t pgid = (pid_t)p2;
  88         pid_t spid, spgid;
  89         int ret;
  90 
  91         if (pid < 0)
  92                 return (-ESRCH);
  93 
  94         if (pgid < 0)
  95                 return (-EINVAL);
  96 
  97         if ((ret = lx_lpid_to_spid(pid, &spid)) < 0)
  98                 return (ret);
  99 
 100         if (pgid == 0)
 101                 spgid = spid;
 102         else if ((ret = lx_lpid_to_spid(pgid, &spgid)) < 0)
 103                 return (ret);
 104 
 105         ret = setpgid(spid, spgid);
 106 
 107         return ((ret == 0) ? 0 : -errno);
 108 }
 109 
 110 int
 111 lx_getsid(uintptr_t p1)
 112 {
 113         pid_t spid;
 114         int pid = (int)p1;
 115         int ret;
 116 
 117         if (pid < 0)
 118                 return (-ESRCH);
 119 
 120         /*
 121          * If the supplied matches that of the init process, return the value
 122          * Linux expects.
 123          */
 124         if (pid == zoneinit_pid)
 125                 return (LX_INIT_SID);
 126 
 127         if ((ret = lx_lpid_to_spid(pid, &spid)) < 0)
 128                 return (ret);
 129 
 130         ret = getsid(spid);
 131 
 132         /*
 133          * If the sid is that of the init process, return the value Linux
 134          * expects.
 135          */
 136         if (ret == zoneinit_pid)
 137                 return (LX_INIT_SID);
 138 
 139         return ((ret == -1) ? -errno : ret);
 140 }
 141 
 142 int
 143 lx_setsid(void)
 144 {
 145         int ret;
 146 
 147         ret = setsid();
 148 
 149         /*
 150          * If the pgid is that of the init process, return the value Linux
 151          * expects.
 152          */
 153         if (ret == zoneinit_pid)
 154                 return (LX_INIT_SID);
 155 
 156         return ((ret == -1) ? -errno : ret);
 157 }