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, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 1997-2003 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 <stdlib.h> 30 #include <unistd.h> 31 #include <errno.h> 32 #include <sys/lwp.h> 33 #include "libproc.h" 34 35 /* 36 * exit() system call -- executed by subject process. 37 */ 38 int 39 pr_exit(struct ps_prochandle *Pr, int status) 40 { 41 sysret_t rval; /* return value from exit() */ 42 argdes_t argd[1]; /* arg descriptors for exit() */ 43 argdes_t *adp; 44 int error; 45 46 if (Pr == NULL) { /* no subject process */ 47 exit(status); 48 return (0); /* not reached */ 49 } 50 51 adp = &argd[0]; /* status argument */ 52 adp->arg_value = status; 53 adp->arg_object = NULL; 54 adp->arg_type = AT_BYVAL; 55 adp->arg_inout = AI_INPUT; 56 adp->arg_size = 0; 57 58 error = Psyscall(Pr, &rval, SYS_exit, 1, &argd[0]); 59 /* actually -- never returns. Expect ENOENT */ 60 61 if (error < 0) { 62 if (errno == ENOENT) /* expected case */ 63 error = ENOENT; 64 else 65 error = ENOSYS; 66 } 67 68 if (error == 0) /* can't happen? */ 69 return (rval.sys_rval1); 70 71 if (error == ENOENT) /* expected case */ 72 return (0); 73 74 errno = error; 75 return (-1); 76 } 77 78 /* 79 * lwp_exit() system call -- executed by subject lwp. 80 */ 81 int 82 pr_lwp_exit(struct ps_prochandle *Pr) 83 { 84 sysret_t rval; /* return value from lwp_exit() */ 85 int error; 86 87 if (Pr == NULL) { /* no subject process */ 88 (void) syscall(SYS_lwp_exit); 89 return (0); /* not reached */ 90 } 91 92 error = Psyscall(Pr, &rval, SYS_lwp_exit, 0, NULL); 93 /* actually -- never returns. Expect ENOENT */ 94 95 if (error < 0) { 96 if (errno == ENOENT) /* expected case */ 97 error = ENOENT; 98 else 99 error = ENOSYS; 100 } 101 102 if (error == 0) /* can't happen? */ 103 return (rval.sys_rval1); 104 105 if (error == ENOENT) /* expected case */ 106 return (0); 107 108 errno = error; 109 return (-1); 110 } 111