1*0Sstevel@tonic-gate /* 2*0Sstevel@tonic-gate * CDDL HEADER START 3*0Sstevel@tonic-gate * 4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 7*0Sstevel@tonic-gate * with the License. 8*0Sstevel@tonic-gate * 9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 11*0Sstevel@tonic-gate * See the License for the specific language governing permissions 12*0Sstevel@tonic-gate * and limitations under the License. 13*0Sstevel@tonic-gate * 14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 19*0Sstevel@tonic-gate * 20*0Sstevel@tonic-gate * CDDL HEADER END 21*0Sstevel@tonic-gate */ 22*0Sstevel@tonic-gate /* 23*0Sstevel@tonic-gate * Copyright 2004 Sun Microsystems, Inc. All rights reserved. 24*0Sstevel@tonic-gate * Use is subject to license terms. 25*0Sstevel@tonic-gate */ 26*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 27*0Sstevel@tonic-gate 28*0Sstevel@tonic-gate #include <sys/types.h> 29*0Sstevel@tonic-gate #include <stdio.h> 30*0Sstevel@tonic-gate #include <errno.h> 31*0Sstevel@tonic-gate #include <unistd.h> 32*0Sstevel@tonic-gate #include <string.h> 33*0Sstevel@tonic-gate #include <wait.h> 34*0Sstevel@tonic-gate #include <limits.h> 35*0Sstevel@tonic-gate #include "machdep.h" 36*0Sstevel@tonic-gate #include "sgs.h" 37*0Sstevel@tonic-gate #include "rtc.h" 38*0Sstevel@tonic-gate #include "conv.h" 39*0Sstevel@tonic-gate #include "_crle.h" 40*0Sstevel@tonic-gate #include "msg.h" 41*0Sstevel@tonic-gate 42*0Sstevel@tonic-gate /* 43*0Sstevel@tonic-gate * Having gathered together any dependencies, dldump(3x) any necessary images. 44*0Sstevel@tonic-gate * 45*0Sstevel@tonic-gate * All dldump(3x) processing is carried out from the audit library. The 46*0Sstevel@tonic-gate * temporary configuration file is read and all alternative marked files are 47*0Sstevel@tonic-gate * dumped. If a -E application requires RTLD_REL_EXEC then that application 48*0Sstevel@tonic-gate * acts as the new process, otherwise lddstub is used. 49*0Sstevel@tonic-gate * 50*0Sstevel@tonic-gate * Besides dldump(3x)'ing any images the audit library returns the address 51*0Sstevel@tonic-gate * range of the images which will used to update the configuration file. 52*0Sstevel@tonic-gate */ 53*0Sstevel@tonic-gate int 54*0Sstevel@tonic-gate dump(Crle_desc * crle) 55*0Sstevel@tonic-gate { 56*0Sstevel@tonic-gate const char *orgapp = (const char *)crle->c_app; 57*0Sstevel@tonic-gate int fildes[2], pid; 58*0Sstevel@tonic-gate 59*0Sstevel@tonic-gate if (orgapp == 0) 60*0Sstevel@tonic-gate orgapp = conv_lddstub(crle->c_class); 61*0Sstevel@tonic-gate 62*0Sstevel@tonic-gate /* 63*0Sstevel@tonic-gate * Set up a pipe through which the audit library will write the image 64*0Sstevel@tonic-gate * address ranges. 65*0Sstevel@tonic-gate */ 66*0Sstevel@tonic-gate if (pipe(fildes) == -1) { 67*0Sstevel@tonic-gate int err = errno; 68*0Sstevel@tonic-gate (void) fprintf(stderr, MSG_INTL(MSG_SYS_PIPE), 69*0Sstevel@tonic-gate crle->c_name, strerror(err)); 70*0Sstevel@tonic-gate return (1); 71*0Sstevel@tonic-gate } 72*0Sstevel@tonic-gate 73*0Sstevel@tonic-gate /* 74*0Sstevel@tonic-gate * Fork ourselves to run the application and collect its dependencies. 75*0Sstevel@tonic-gate */ 76*0Sstevel@tonic-gate if ((pid = fork()) == -1) { 77*0Sstevel@tonic-gate int err = errno; 78*0Sstevel@tonic-gate (void) fprintf(stderr, MSG_INTL(MSG_SYS_FORK), 79*0Sstevel@tonic-gate crle->c_name, strerror(err)); 80*0Sstevel@tonic-gate return (1); 81*0Sstevel@tonic-gate } 82*0Sstevel@tonic-gate 83*0Sstevel@tonic-gate if (pid) { 84*0Sstevel@tonic-gate /* 85*0Sstevel@tonic-gate * Parent. Read memory range entries from the audit library. 86*0Sstevel@tonic-gate * The read side of the pipe is attached to stdio to make 87*0Sstevel@tonic-gate * obtaining the individual dependencies easier. 88*0Sstevel@tonic-gate */ 89*0Sstevel@tonic-gate int error = 0, status; 90*0Sstevel@tonic-gate FILE *fd; 91*0Sstevel@tonic-gate char buffer[PATH_MAX]; 92*0Sstevel@tonic-gate 93*0Sstevel@tonic-gate (void) close(fildes[1]); 94*0Sstevel@tonic-gate if ((fd = fdopen(fildes[0], MSG_ORIG(MSG_STR_READ))) != NULL) { 95*0Sstevel@tonic-gate char *str; 96*0Sstevel@tonic-gate Rtc_head *rtc = (Rtc_head *)crle->c_tempaddr; 97*0Sstevel@tonic-gate 98*0Sstevel@tonic-gate while (fgets(buffer, PATH_MAX, fd) != NULL) { 99*0Sstevel@tonic-gate /* 100*0Sstevel@tonic-gate * Make sure we recognize the message, remove 101*0Sstevel@tonic-gate * the newline (which allowed fgets() use) and 102*0Sstevel@tonic-gate * register the memory range entry; 103*0Sstevel@tonic-gate */ 104*0Sstevel@tonic-gate if (strncmp(MSG_ORIG(MSG_AUD_PRF), buffer, 105*0Sstevel@tonic-gate MSG_AUD_PRF_SIZE)) 106*0Sstevel@tonic-gate continue; 107*0Sstevel@tonic-gate 108*0Sstevel@tonic-gate str = strrchr(buffer, '\n'); 109*0Sstevel@tonic-gate *str = '\0'; 110*0Sstevel@tonic-gate str = buffer + MSG_AUD_PRF_SIZE; 111*0Sstevel@tonic-gate 112*0Sstevel@tonic-gate if (strncmp(MSG_ORIG(MSG_AUD_RESBGN), 113*0Sstevel@tonic-gate str, MSG_AUD_RESBGN_SIZE) == 0) { 114*0Sstevel@tonic-gate rtc->ch_resbgn = 115*0Sstevel@tonic-gate strtoull(str + MSG_AUD_RESBGN_SIZE, 116*0Sstevel@tonic-gate (char **)NULL, 0); 117*0Sstevel@tonic-gate } else if (strncmp(MSG_ORIG(MSG_AUD_RESEND), 118*0Sstevel@tonic-gate str, MSG_AUD_RESEND_SIZE) == 0) { 119*0Sstevel@tonic-gate rtc->ch_resend = 120*0Sstevel@tonic-gate strtoull(str + MSG_AUD_RESEND_SIZE, 121*0Sstevel@tonic-gate (char **)NULL, 0); 122*0Sstevel@tonic-gate } else 123*0Sstevel@tonic-gate continue; 124*0Sstevel@tonic-gate } 125*0Sstevel@tonic-gate (void) fclose(fd); 126*0Sstevel@tonic-gate } else 127*0Sstevel@tonic-gate error = errno; 128*0Sstevel@tonic-gate 129*0Sstevel@tonic-gate while (wait(&status) != pid) 130*0Sstevel@tonic-gate ; 131*0Sstevel@tonic-gate if (status) { 132*0Sstevel@tonic-gate if (WIFSIGNALED(status)) { 133*0Sstevel@tonic-gate (void) fprintf(stderr, 134*0Sstevel@tonic-gate MSG_INTL(MSG_SYS_EXEC), crle->c_name, 135*0Sstevel@tonic-gate orgapp, (WSIGMASK & status), 136*0Sstevel@tonic-gate ((status & WCOREFLG) ? 137*0Sstevel@tonic-gate MSG_INTL(MSG_SYS_CORE) : 138*0Sstevel@tonic-gate MSG_ORIG(MSG_STR_EMPTY))); 139*0Sstevel@tonic-gate } 140*0Sstevel@tonic-gate return (status); 141*0Sstevel@tonic-gate } 142*0Sstevel@tonic-gate return (error); 143*0Sstevel@tonic-gate } else { 144*0Sstevel@tonic-gate char efds[MSG_ENV_AUD_FD_SIZE + 10]; 145*0Sstevel@tonic-gate char eflg[MSG_ENV_AUD_FLAGS_SIZE + 10]; 146*0Sstevel@tonic-gate char ecnf[PATH_MAX]; 147*0Sstevel@tonic-gate 148*0Sstevel@tonic-gate (void) close(fildes[0]); 149*0Sstevel@tonic-gate 150*0Sstevel@tonic-gate /* 151*0Sstevel@tonic-gate * Child. Set up environment variables to enable and identify 152*0Sstevel@tonic-gate * auditing. 153*0Sstevel@tonic-gate */ 154*0Sstevel@tonic-gate (void) snprintf(efds, (MSG_ENV_AUD_FD_SIZE + 10), 155*0Sstevel@tonic-gate MSG_ORIG(MSG_ENV_AUD_FD), fildes[1]); 156*0Sstevel@tonic-gate (void) snprintf(eflg, (MSG_ENV_AUD_FLAGS_SIZE + 10), 157*0Sstevel@tonic-gate MSG_ORIG(MSG_ENV_AUD_FLAGS), crle->c_dlflags); 158*0Sstevel@tonic-gate (void) snprintf(ecnf, PATH_MAX, MSG_ORIG(MSG_ENV_LD_CONFIG), 159*0Sstevel@tonic-gate crle->c_tempname); 160*0Sstevel@tonic-gate 161*0Sstevel@tonic-gate /* 162*0Sstevel@tonic-gate * Put strings in the environment for exec(). 163*0Sstevel@tonic-gate * NOTE, use of automatic variables for construction of the 164*0Sstevel@tonic-gate * environment variables is legitimate here, as they are local 165*0Sstevel@tonic-gate * to the child process and are established solely for exec(). 166*0Sstevel@tonic-gate */ 167*0Sstevel@tonic-gate if ((putenv(efds) != 0) || (putenv(eflg) != 0) || 168*0Sstevel@tonic-gate (putenv(ecnf) != 0) || (putenv(crle->c_audit) != 0) || 169*0Sstevel@tonic-gate (putenv((char *)MSG_ORIG(MSG_ENV_LD_FLAGS)) != 0)) { 170*0Sstevel@tonic-gate int err = errno; 171*0Sstevel@tonic-gate (void) fprintf(stderr, MSG_INTL(MSG_SYS_PUTENV), 172*0Sstevel@tonic-gate crle->c_name, strerror(err)); 173*0Sstevel@tonic-gate return (1); 174*0Sstevel@tonic-gate } 175*0Sstevel@tonic-gate 176*0Sstevel@tonic-gate if (execlp(orgapp, orgapp, 0) == -1) { 177*0Sstevel@tonic-gate int err = errno; 178*0Sstevel@tonic-gate (void) fprintf(stderr, MSG_INTL(MSG_SYS_EXECLP), 179*0Sstevel@tonic-gate crle->c_name, orgapp, strerror(err)); 180*0Sstevel@tonic-gate _exit(err); 181*0Sstevel@tonic-gate /* NOTREACHED */ 182*0Sstevel@tonic-gate } 183*0Sstevel@tonic-gate } 184*0Sstevel@tonic-gate /* NOTREACHED */ 185*0Sstevel@tonic-gate } 186