lib/mksh/mksh.cc

10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe/*
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe * CDDL HEADER START
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe *
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe * The contents of this file are subject to the terms of the
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe * Common Development and Distribution License (the "License").
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe * You may not use this file except in compliance with the License.
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe *
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe * or http://www.opensolaris.org/os/licensing.
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe * See the License for the specific language governing permissions
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe * and limitations under the License.
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe *
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe * When distributing Covered Code, include this CDDL HEADER in each
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe * If applicable, add the following below this CDDL HEADER, with the
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe * fields enclosed by brackets "[]" replaced with your own identifying
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe * information: Portions Copyright [yyyy] [name of copyright owner]
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe *
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe * CDDL HEADER END
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe */
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe/*
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe * Copyright 2004 Sun Microsystems, Inc. All rights reserved.
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe * Use is subject to license terms.
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe */
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe/*
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe *  mksh.cc
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe *
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe *  Execute the command(s) of one Make or DMake rule
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe */
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe/*
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe * Included files
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe */
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe#include <mksh/dosys.h>     /* redirect_io() */
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe#include <mksh/misc.h>      /* retmem() */
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe#include <mksh/mksh.h>
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe#include <errno.h>
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe#include <signal.h>
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe/*
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe * Workaround for NFS bug. Sometimes, when running 'chdir' on a remote
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe * dmake server, it fails with "Stale NFS file handle" error.
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe * The second attempt seems to work.
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe */
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Loweint
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowemy_chdir(char * dir) {
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe    int res = chdir(dir);
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe    if (res != 0 && (errno == ESTALE || errno == EAGAIN)) {
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe        /* Stale NFS file handle. Try again */
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe        res = chdir(dir);
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe    }
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe    return res;
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe}
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe/*
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe * File table of contents
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe */
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowestatic void change_sunpro_dependencies_value(char *oldpath, char *newpath);
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowestatic void init_mksh_globals(char *shell);
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowestatic void set_env_vars(char *env_list[]);
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowestatic void
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Loweset_env_vars(char *env_list[])
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe{
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe    char            **env_list_p;
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe    for (env_list_p = env_list;
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe         *env_list_p != (char *) NULL;
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe         env_list_p++) {
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe        putenv(*env_list_p);
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe    }
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe}
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowestatic void
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Loweinit_mksh_globals(char *shell)
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe{
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe/*
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe    MBSTOWCS(wcs_buffer, "SHELL");
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe    shell_name = GETNAME(wcs_buffer, FIND_LENGTH);
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe    MBSTOWCS(wcs_buffer, shell);
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe    (void) SETVAR(shell_name, GETNAME(wcs_buffer, FIND_LENGTH), false);
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe */
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe    char * dmake_shell;
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe    if ((dmake_shell = getenv("DMAKE_SHELL")) == NULL) {
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe        dmake_shell = shell;
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe    }
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe    MBSTOWCS(wcs_buffer, dmake_shell);
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe    shell_name = GETNAME(wcs_buffer, FIND_LENGTH);
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe}
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe/*
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe * Change the pathname in the value of the SUNPRO_DEPENDENCIES env variable
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe * from oldpath to newpath.
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe */
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowestatic void
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowechange_sunpro_dependencies_value(char *oldpath, char *newpath)
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe{
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe    char        buf[MAXPATHLEN];
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe    static char *env;
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe    int     length;
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe    int     oldpathlen;
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe    char        *sp_dep_value;
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe    /* check if SUNPRO_DEPENDENCIES is set in the environment */
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe    if ((sp_dep_value = getenv("SUNPRO_DEPENDENCIES")) != NULL) {
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe        oldpathlen = strlen(oldpath);
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe        /* check if oldpath is indeed in the value of SUNPRO_DEPENDENCIES */
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe        if (strncmp(oldpath, sp_dep_value, oldpathlen) == 0) {
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe            (void) sprintf(buf,
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe                       "%s%s",
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe                       newpath,
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe                       sp_dep_value + oldpathlen);
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe            length = 2 +
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe                strlen("SUNPRO_DEPENDENCIES") +
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe                strlen(buf);
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe            env = getmem(length);
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe            (void) sprintf(env,
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe                       "%s=%s",
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe                       "SUNPRO_DEPENDENCIES",
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe                       buf);
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe            (void) putenv(env);
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe        }
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe    }
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe}
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe
10d63b7db37a83b39c7f511cf9426c9d03ea0760Richard Lowe