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 #include <stdlib.h> 28 #include <unistd.h> 29 #include <errno.h> 30 #include <sys/lwp.h> 31 #include "libproc.h" 32 33 /* 34 * exit() system call -- executed by subject process. 35 */ 36 int 37 pr_exit(struct ps_prochandle *Pr, int status) 38 { 39 sysret_t rval; /* return value from exit() */ 40 argdes_t argd[1]; /* arg descriptors for exit() */ 41 argdes_t *adp; 42 int error; 43 44 if (Pr == NULL) { /* no subject process */ 45 exit(status); 46 return (0); /* not reached */ 47 } 48 49 adp = &argd[0]; /* status argument */ 50 adp->arg_value = status; 51 adp->arg_object = NULL; 52 adp->arg_type = AT_BYVAL; 53 adp->arg_inout = AI_INPUT; 54 adp->arg_size = 0; 55 56 error = Psyscall(Pr, &rval, SYS_exit, 1, &argd[0]); 57 /* actually -- never returns. Expect ENOENT */ 58 59 if (error < 0) { 60 if (errno == ENOENT) /* expected case */ 61 error = ENOENT; 62 else 63 error = ENOSYS; 64 } 65 66 if (error == 0) /* can't happen? */ 67 return (rval.sys_rval1); 68 69 if (error == ENOENT) /* expected case */ 70 return (0); 71 72 errno = error; 73 return (-1); 74 } 75 76 /* 77 * lwp_exit() system call -- executed by subject lwp. 78 */ 79 int 80 pr_lwp_exit(struct ps_prochandle *Pr) 81 { 82 sysret_t rval; /* return value from lwp_exit() */ 83 int error; 84 85 if (Pr == NULL) { /* no subject process */ 86 (void) syscall(SYS_lwp_exit); 87 return (0); /* not reached */ 88 } 89 90 error = Psyscall(Pr, &rval, SYS_lwp_exit, 0, NULL); 91 /* actually -- never returns. Expect ENOENT */ 92 93 if (error < 0) { 94 if (errno == ENOENT) /* expected case */ 95 error = ENOENT; 96 else 97 error = ENOSYS; 98 } 99 100 if (error == 0) /* can't happen? */ 101 return (rval.sys_rval1); 102 103 if (error == ENOENT) /* expected case */ 104 return (0); 105 106 errno = error; 107 return (-1); 108 } 109