src/java.base/unix/native/libjli/java_md_common.c

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@@ -1,7 +1,7 @@
 /*
- * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2012, 2014, 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

@@ -188,204 +188,10 @@
 
     JLI_Snprintf(buffer, sizeof(buffer), "%s/%s/bin/java", path, dir);
     return ((access(buffer, X_OK) == 0) ? 1 : 0);
 }
 
-/*
- *      Determine if there is an acceptable JRE in the directory dirname.
- *      Upon locating the "best" one, return a fully qualified path to
- *      it. "Best" is defined as the most advanced JRE meeting the
- *      constraints contained in the manifest_info. If no JRE in this
- *      directory meets the constraints, return NULL.
- *
- *      Note that we don't check for errors in reading the directory
- *      (which would be done by checking errno).  This is because it
- *      doesn't matter if we get an error reading the directory, or
- *      we just don't find anything interesting in the directory.  We
- *      just return NULL in either case.
- *
- *      The historical names of j2sdk and j2re were changed to jdk and
- *      jre respecively as part of the 1.5 rebranding effort.  Since the
- *      former names are legacy on Linux, they must be recognized for
- *      all time.  Fortunately, this is a minor cost.
- */
-static char
-*ProcessDir(manifest_info *info, char *dirname)
-{
-    DIR     *dirp;
-    struct dirent *dp;
-    char    *best = NULL;
-    int     offset;
-    int     best_offset = 0;
-    char    *ret_str = NULL;
-    char    buffer[PATH_MAX];
-
-    if ((dirp = opendir(dirname)) == NULL)
-        return (NULL);
-
-    do {
-        if ((dp = readdir(dirp)) != NULL) {
-            offset = 0;
-            if ((JLI_StrNCmp(dp->d_name, "jre", 3) == 0) ||
-                (JLI_StrNCmp(dp->d_name, "jdk", 3) == 0))
-                offset = 3;
-            else if (JLI_StrNCmp(dp->d_name, "j2re", 4) == 0)
-                offset = 4;
-            else if (JLI_StrNCmp(dp->d_name, "j2sdk", 5) == 0)
-                offset = 5;
-            if (offset > 0) {
-                if ((JLI_AcceptableRelease(dp->d_name + offset,
-                    info->jre_version)) && CheckSanity(dirname, dp->d_name))
-                    if ((best == NULL) || (JLI_ExactVersionId(
-                      dp->d_name + offset, best + best_offset) > 0)) {
-                        if (best != NULL)
-                            JLI_MemFree(best);
-                        best = JLI_StringDup(dp->d_name);
-                        best_offset = offset;
-                    }
-            }
-        }
-    } while (dp != NULL);
-    (void) closedir(dirp);
-    if (best == NULL)
-        return (NULL);
-    else {
-        ret_str = JLI_MemAlloc(JLI_StrLen(dirname) + JLI_StrLen(best) + 2);
-        sprintf(ret_str, "%s/%s", dirname, best);
-        JLI_MemFree(best);
-        return (ret_str);
-    }
-}
-
-/*
- *      This is the global entry point. It examines the host for the optimal
- *      JRE to be used by scanning a set of directories.  The set of directories
- *      is platform dependent and can be overridden by the environment
- *      variable JAVA_VERSION_PATH.
- *
- *      This routine itself simply determines the set of appropriate
- *      directories before passing control onto ProcessDir().
- */
-char*
-LocateJRE(manifest_info* info)
-{
-    char        *path;
-    char        *home;
-    char        *target = NULL;
-    char        *dp;
-    char        *cp;
-
-    /*
-     * Start by getting JAVA_VERSION_PATH
-     */
-    if (info->jre_restrict_search) {
-        path = JLI_StringDup(system_dir);
-    } else if ((path = getenv("JAVA_VERSION_PATH")) != NULL) {
-        path = JLI_StringDup(path);
-    } else {
-        if ((home = getenv("HOME")) != NULL) {
-            path = (char *)JLI_MemAlloc(JLI_StrLen(home) + \
-                        JLI_StrLen(system_dir) + JLI_StrLen(user_dir) + 2);
-            sprintf(path, "%s%s:%s", home, user_dir, system_dir);
-        } else {
-            path = JLI_StringDup(system_dir);
-        }
-    }
-
-    /*
-     * Step through each directory on the path. Terminate the scan with
-     * the first directory with an acceptable JRE.
-     */
-    cp = dp = path;
-    while (dp != NULL) {
-        cp = JLI_StrChr(dp, (int)':');
-        if (cp != NULL)
-            *cp = '\0';
-        if ((target = ProcessDir(info, dp)) != NULL)
-            break;
-        dp = cp;
-        if (dp != NULL)
-            dp++;
-    }
-    JLI_MemFree(path);
-    return (target);
-}
-
-/*
- * Given a path to a jre to execute, this routine checks if this process
- * is indeed that jre.  If not, it exec's that jre.
- *
- * We want to actually check the paths rather than just the version string
- * built into the executable, so that given version specification (and
- * JAVA_VERSION_PATH) will yield the exact same Java environment, regardless
- * of the version of the arbitrary launcher we start with.
- */
-void
-ExecJRE(char *jre, char **argv)
-{
-    char    wanted[PATH_MAX];
-    const char* progname = GetProgramName();
-    const char* execname = NULL;
-
-    /*
-     * Resolve the real path to the directory containing the selected JRE.
-     */
-    if (realpath(jre, wanted) == NULL) {
-        JLI_ReportErrorMessage(JRE_ERROR9, jre);
-        exit(1);
-    }
-
-    /*
-     * Resolve the real path to the currently running launcher.
-     */
-    SetExecname(argv);
-    execname = GetExecName();
-    if (execname == NULL) {
-        JLI_ReportErrorMessage(JRE_ERROR10);
-        exit(1);
-    }
-
-    /*
-     * If the path to the selected JRE directory is a match to the initial
-     * portion of the path to the currently executing JRE, we have a winner!
-     * If so, just return.
-     */
-    if (JLI_StrNCmp(wanted, execname, JLI_StrLen(wanted)) == 0)
-        return;                 /* I am the droid you were looking for */
-
-
-    /*
-     * This should never happen (because of the selection code in SelectJRE),
-     * but check for "impossibly" long path names just because buffer overruns
-     * can be so deadly.
-     */
-    if (JLI_StrLen(wanted) + JLI_StrLen(progname) + 6 > PATH_MAX) {
-        JLI_ReportErrorMessage(JRE_ERROR11);
-        exit(1);
-    }
-
-    /*
-     * Construct the path and exec it.
-     */
-    (void)JLI_StrCat(JLI_StrCat(wanted, "/bin/"), progname);
-    argv[0] = JLI_StringDup(progname);
-    if (JLI_IsTraceLauncher()) {
-        int i;
-        printf("ReExec Command: %s (%s)\n", wanted, argv[0]);
-        printf("ReExec Args:");
-        for (i = 1; argv[i] != NULL; i++)
-            printf(" %s", argv[i]);
-        printf("\n");
-    }
-    JLI_TraceLauncher("TRACER_MARKER:About to EXEC\n");
-    (void)fflush(stdout);
-    (void)fflush(stderr);
-    execv(wanted, argv);
-    JLI_ReportErrorMessageSys(JRE_ERROR12, wanted);
-    exit(1);
-}
-
 /*
  * "Borrowed" from Solaris 10 where the unsetenv() function is being added
  * to libc thanks to SUSv3 (Standard Unix Specification, version 3). As
  * such, in the fullness of time this will appear in libc on all relevant
  * Solaris/Linux platforms and maybe even the Windows platform.  At that