--- /dev/null Wed Nov 13 16:42:53 2013 +++ new/src/solaris/native/java/lang/jspawnhelper.c Wed Nov 13 16:42:52 2013 @@ -0,0 +1,149 @@ +/* + * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved. + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * This code is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 only, as + * published by the Free Software Foundation. Oracle designates this + * particular file as subject to the "Classpath" exception as provided + * by Oracle in the LICENSE file that accompanied this code. + * + * This code is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * version 2 for more details (a copy is included in the LICENSE file that + * accompanied this code). + * + * You should have received a copy of the GNU General Public License version + * 2 along with this work; if not, write to the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA + * or visit www.oracle.com if you need additional information or have any + * questions. + */ + +#include +#include +#include +#include +#include +#include +#include + +#include "childproc.h" + +extern int errno; + +#define ALLOC(X,Y) { \ + void *mptr; \ + mptr = malloc (Y); \ + if (mptr == 0) { \ + error (fdout, ERR_MALLOC); \ + } \ + X = mptr; \ +} + +#define ERR_MALLOC 1 +#define ERR_PIPE 2 +#define ERR_ARGS 3 + +void error (int fd, int err) { + write (fd, &err, sizeof(err)); + exit (1); +} + +void shutItDown() { + fprintf(stdout, "This command is not for general use and should "); + fprintf(stdout, "only be run as the result of a call to\n"); + fprintf(stdout, "ProcessBuilder.start() or Runtime.exec() in a java "); + fprintf(stdout, "application\n"); + _exit(1); +} + +/* + * read the following off the pipefd + * - the ChildStuff struct + * - the SpawnInfo struct + * - the data strings for fields in ChildStuff + */ +void initChildStuff (int fdin, int fdout, ChildStuff *c) { + int n; + int argvBytes, nargv, envvBytes, nenvv; + int dirlen; + char *buf; + SpawnInfo sp; + int bufsize, offset=0; + int magic; + int res; + + res = readFully (fdin, &magic, sizeof(magic)); + if (res != 4 || magic != magicNumber()) { + error (fdout, ERR_PIPE); + } + + if (readFully (fdin, c, sizeof(*c)) == -1) { + error (fdout, ERR_PIPE); + } + + if (readFully (fdin, &sp, sizeof(sp)) == -1) { + error (fdout, ERR_PIPE); + } + + bufsize = sp.argvBytes + sp.envvBytes + + sp.dirlen + sp.parentPathvBytes; + + ALLOC(buf, bufsize); + + if (readFully (fdin, buf, bufsize) == -1) { + error (fdout, ERR_PIPE); + } + + /* Initialize argv[] */ + ALLOC(c->argv, sizeof(char *) * sp.nargv); + initVectorFromBlock (c->argv, buf+offset, sp.nargv-1); + offset += sp.argvBytes; + + /* Initialize envv[] */ + if (sp.nenvv == 0) { + c->envv = 0; + } else { + ALLOC(c->envv, sizeof(char *) * sp.nenvv); + initVectorFromBlock (c->envv, buf+offset, sp.nenvv-1); + offset += sp.envvBytes; + } + + /* Initialize pdir */ + if (sp.dirlen == 0) { + c->pdir = 0; + } else { + c->pdir = buf+offset; + offset += sp.dirlen; + } + + /* Initialize parentPathv[] */ + ALLOC(parentPathv, sizeof (char *) * sp.nparentPathv) + initVectorFromBlock ((const char**)parentPathv, buf+offset, sp.nparentPathv-1); + offset += sp.parentPathvBytes; +} + +int main(int argc, char *argv[]) { + ChildStuff c; + int t; + struct stat buf; + /* argv[0] contains the fd number to read all the child info */ + int r, fdin, fdout; + + r = sscanf (argv[argc-1], "%d:%d", &fdin, &fdout); + if (r == 2 && fcntl(fdin, F_GETFD) != -1) { + fstat(fdin, &buf); + if (!S_ISFIFO(buf.st_mode)) + shutItDown(); + } else { + shutItDown(); + } + initChildStuff (fdin, fdout, &c); + + childProcess (&c); + return 0; /* NOT REACHED */ +}