usr/src/cmd/make/lib/mksh/mksh.cc

   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 (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 /*
  22  * Copyright 2004 Sun Microsystems, Inc. All rights reserved.
  23  * Use is subject to license terms.
  24  */
  25
  26
  27 /*
  28  *      mksh.cc
  29  *
  30  *      Execute the command(s) of one Make or DMake rule
  31  */
  32
  33 /*
  34  * Included files
  35  */
  36 #include <mksh/dosys.h>         /* redirect_io() */
  37 #include <mksh/misc.h>          /* retmem() */
  38 #include <mksh/mksh.h>
  39 #include <errno.h>
  40 #include <signal.h>
  41
  42
  43 /*
  44  * Workaround for NFS bug. Sometimes, when running 'chdir' on a remote
  45  * dmake server, it fails with "Stale NFS file handle" error.
  46  * The second attempt seems to work.
  47  */
  48 int
  49 my_chdir(char * dir) {
  50         int res = chdir(dir);
  51         if (res != 0 && (errno == ESTALE || errno == EAGAIN)) {
  52                 /* Stale NFS file handle. Try again */
  53                 res = chdir(dir);
  54         }
  55         return res;
  56 }
  57
  58
  59 /*
  60  * File table of contents
  61  */
  62 static void     change_sunpro_dependencies_value(char *oldpath, char *newpath);
  63 static void     init_mksh_globals(char *shell);
  64 static void     set_env_vars(char *env_list[]);
  65
  66
  67 static void
  68 set_env_vars(char *env_list[])
  69 {
  70         char                    **env_list_p;
  71
  72         for (env_list_p = env_list;
  73              *env_list_p != (char *) NULL;
  74              env_list_p++) {
  75                 putenv(*env_list_p);
  76         }
  77 }
  78
  79 static void
  80 init_mksh_globals(char *shell)
  81 {
  82 /*
  83         MBSTOWCS(wcs_buffer, "SHELL");
  84         shell_name = GETNAME(wcs_buffer, FIND_LENGTH);
  85         MBSTOWCS(wcs_buffer, shell);
  86         (void) SETVAR(shell_name, GETNAME(wcs_buffer, FIND_LENGTH), false);
  87  */
  88         char * dmake_shell;
  89         if ((dmake_shell = getenv("DMAKE_SHELL")) == NULL) {
  90                 dmake_shell = shell;
  91         }
  92         MBSTOWCS(wcs_buffer, dmake_shell);
  93         shell_name = GETNAME(wcs_buffer, FIND_LENGTH);
  94 }
  95
  96 /*
  97  * Change the pathname in the value of the SUNPRO_DEPENDENCIES env variable
  98  * from oldpath to newpath.
  99  */
 100 static void
 101 change_sunpro_dependencies_value(char *oldpath, char *newpath)
 102 {
 103         char            buf[MAXPATHLEN];
 104         static char     *env;
 105         int             length;
 106         int             oldpathlen;
 107         char            *sp_dep_value;
 108
 109         /* check if SUNPRO_DEPENDENCIES is set in the environment */
 110         if ((sp_dep_value = getenv("SUNPRO_DEPENDENCIES")) != NULL) {
 111                 oldpathlen = strlen(oldpath);
 112                 /* check if oldpath is indeed in the value of SUNPRO_DEPENDENCIES */
 113                 if (strncmp(oldpath, sp_dep_value, oldpathlen) == 0) {
 114                         (void) sprintf(buf,
 115                                        "%s%s",
 116                                        newpath,
 117                                        sp_dep_value + oldpathlen);
 118                         length = 2 +
 119                                 strlen("SUNPRO_DEPENDENCIES") +
 120                                 strlen(buf);
 121                         env = getmem(length);
 122                         (void) sprintf(env,
 123                                        "%s=%s",
 124                                        "SUNPRO_DEPENDENCIES",
 125                                        buf);
 126                         (void) putenv(env);
 127                 }
 128         }
 129 }
 130
 131