src/java.base/share/native/libjli/java.c
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@@ -214,25 +214,18 @@
}
AddOption("-Dsun.java.launcher.diag=true", NULL);
}
/*
- * Make sure the specified version of the JRE is running.
+ * SelectVersion() has several responsibilities:
*
- * There are three things to note about the SelectVersion() routine:
- * 1) If the version running isn't correct, this routine doesn't
- * return (either the correct version has been exec'd or an error
- * was issued).
- * 2) Argc and Argv in this scope are *not* altered by this routine.
- * It is the responsibility of subsequent code to ignore the
- * arguments handled by this routine.
- * 3) As a side-effect, the variable "main_class" is guaranteed to
- * be set (if it should ever be set). This isn't exactly the
- * poster child for structured programming, but it is a small
- * price to pay for not processing a jar file operand twice.
- * (Note: This side effect has been disabled. See comment on
- * bugid 5030265 below.)
+ * 1) Disallow specification of another JRE. With 1.9, another
+ * version of the JRE cannot be invoked.
+ * 2) Allow for a JRE version to invoke JDK 1.9 or later. Since
+ * all mJRE directives have been stripped from the request but
+ * the pre 1.9 JRE [ 1.6 thru 1.8 ], it is as if 1.9+ has been
+ * invoked from the command line.
*/
SelectVersion(argc, argv, &main_class);
CreateExecutionEnvironment(&argc, &argv,
jrepath, sizeof(jrepath),
@@ -827,12 +820,10 @@
*/
static void
SelectVersion(int argc, char **argv, char **main_class)
{
char *arg;
- char **new_argv;
- char **new_argp;
char *operand;
char *version = NULL;
char *jre = NULL;
int jarflag = 0;
int headlessflag = 0;
@@ -847,53 +838,49 @@
/*
* If the version has already been selected, set *main_class
* with the value passed through the environment (if any) and
* simply return.
*/
+
+ /*
+ * This environmental variable can be set by mJRE capable JREs
+ * [ 1.5 thru 1.8 ]. All other aspects of mJRE processing have been
+ * stripped by those JREs. This environmental variable allows 1.9+
+ * JREs to be started by these mJRE capable JREs.
+ * Note that mJRE directives in the jar manifest file would have been
+ * ignored for a JRE started by another JRE...
+ * .. skipped for JRE 1.5 and beyond.
+ * .. not even checked for pre 1.5.
+ */
if ((env_in = getenv(ENV_ENTRY)) != NULL) {
if (*env_in != '\0')
*main_class = JLI_StringDup(env_in);
return;
}
/*
* Scan through the arguments for options relevant to multiple JRE
- * support. For reference, the command line syntax is defined as:
+ * support. Multiple JRE support existed in JRE versions 1.5 thru 1.8.
*
- * SYNOPSIS
- * java [options] class [argument...]
- *
- * java [options] -jar file.jar [argument...]
- *
- * As the scan is performed, make a copy of the argument list with
- * the version specification options (new to 1.5) removed, so that
- * a version less than 1.5 can be exec'd.
- *
- * Note that due to the syntax of the native Windows interface
- * CreateProcess(), processing similar to the following exists in
- * the Windows platform specific routine ExecJRE (in java_md.c).
- * Changes here should be reproduced there.
+ * This capability is no longer available with JRE versions 1.9 and later.
+ * These command line options are reported as errors.
*/
- new_argv = JLI_MemAlloc((argc + 1) * sizeof(char*));
- new_argv[0] = argv[0];
- new_argp = &new_argv[1];
argc--;
argv++;
while ((arg = *argv) != 0 && *arg == '-') {
if (JLI_StrCCmp(arg, "-version:") == 0) {
- version = arg + 9;
+ JLI_ReportErrorMessage(SPC_ERROR1);
} else if (JLI_StrCmp(arg, "-jre-restrict-search") == 0) {
- restrict_search = 1;
- } else if (JLI_StrCmp(arg, "-no-jre-restrict-search") == 0) {
- restrict_search = 0;
+ JLI_ReportErrorMessage(SPC_ERROR2);
+ } else if (JLI_StrCmp(arg, "-jre-no-restrict-search") == 0) {
+ JLI_ReportErrorMessage(SPC_ERROR2);
} else {
if (JLI_StrCmp(arg, "-jar") == 0)
jarflag = 1;
/* deal with "unfortunate" classpath syntax */
if ((JLI_StrCmp(arg, "-classpath") == 0 || JLI_StrCmp(arg, "-cp") == 0) &&
(argc >= 2)) {
- *new_argp++ = arg;
argc--;
argv++;
arg = *argv;
}
@@ -906,24 +893,20 @@
} else if (JLI_StrCCmp(arg, "-Djava.awt.headless=") == 0) {
headlessflag = 0;
} else if (JLI_StrCCmp(arg, "-splash:") == 0) {
splash_file_name = arg+8;
}
- *new_argp++ = arg;
}
argc--;
argv++;
}
if (argc <= 0) { /* No operand? Possibly legit with -[full]version */
operand = NULL;
} else {
argc--;
- *new_argp++ = operand = *argv++;
+ operand = *argv++;
}
- while (argc-- > 0) /* Copy over [argument...] */
- *new_argp++ = *argv++;
- *new_argp = NULL;
/*
* If there is a jar file, read the manifest. If the jarfile can't be
* read, the manifest can't be read from the jar file, or the manifest
* is corrupt, issue the appropriate error messages and exit.
@@ -972,92 +955,23 @@
JLI_StrCpy(splash_jar_entry, SPLASH_JAR_ENV_ENTRY "=");
JLI_StrCat(splash_jar_entry, splash_jar_name);
putenv(splash_jar_entry);
}
- /*
- * The JRE-Version and JRE-Restrict-Search values (if any) from the
- * manifest are overwritten by any specified on the command line.
- */
- if (version != NULL)
- info.jre_version = version;
- if (restrict_search != -1)
- info.jre_restrict_search = restrict_search;
/*
* "Valid" returns (other than unrecoverable errors) follow. Set
* main_class as a side-effect of this routine.
*/
if (info.main_class != NULL)
*main_class = JLI_StringDup(info.main_class);
- /*
- * If no version selection information is found either on the command
- * line or in the manifest, simply return.
- */
if (info.jre_version == NULL) {
JLI_FreeManifest();
- JLI_MemFree(new_argv);
return;
}
- /*
- * Check for correct syntax of the version specification (JSR 56).
- */
- if (!JLI_ValidVersionString(info.jre_version)) {
- JLI_ReportErrorMessage(SPC_ERROR1, info.jre_version);
- exit(1);
- }
-
- /*
- * Find the appropriate JVM on the system. Just to be as forgiving as
- * possible, if the standard algorithms don't locate an appropriate
- * jre, check to see if the one running will satisfy the requirements.
- * This can happen on systems which haven't been set-up for multiple
- * JRE support.
- */
- jre = LocateJRE(&info);
- JLI_TraceLauncher("JRE-Version = %s, JRE-Restrict-Search = %s Selected = %s\n",
- (info.jre_version?info.jre_version:"null"),
- (info.jre_restrict_search?"true":"false"), (jre?jre:"null"));
-
- if (jre == NULL) {
- if (JLI_AcceptableRelease(GetFullVersion(), info.jre_version)) {
- JLI_FreeManifest();
- JLI_MemFree(new_argv);
- return;
- } else {
- JLI_ReportErrorMessage(CFG_ERROR4, info.jre_version);
- exit(1);
- }
- }
-
- /*
- * If I'm not the chosen one, exec the chosen one. Returning from
- * ExecJRE indicates that I am indeed the chosen one.
- *
- * The private environment variable _JAVA_VERSION_SET is used to
- * prevent the chosen one from re-reading the manifest file and
- * using the values found within to override the (potential) command
- * line flags stripped from argv (because the target may not
- * understand them). Passing the MainClass value is an optimization
- * to avoid locating, expanding and parsing the manifest extra
- * times.
- */
- if (info.main_class != NULL) {
- if (JLI_StrLen(info.main_class) <= MAXNAMELEN) {
- (void)JLI_StrCat(env_entry, info.main_class);
- } else {
- JLI_ReportErrorMessage(CLS_ERROR5, MAXNAMELEN);
- exit(1);
- }
- }
- (void)putenv(env_entry);
- ExecJRE(jre, new_argv);
- JLI_FreeManifest();
- JLI_MemFree(new_argv);
- return;
}
/*
* Parses command line arguments. Returns JNI_FALSE if launcher
* should exit without starting vm, returns JNI_TRUE if vm needs
@@ -1152,14 +1066,11 @@
} else if (JLI_StrCmp(arg, "-checksource") == 0 ||
JLI_StrCmp(arg, "-cs") == 0 ||
JLI_StrCmp(arg, "-noasyncgc") == 0) {
/* No longer supported */
JLI_ReportErrorMessage(ARG_WARN, arg);
- } else if (JLI_StrCCmp(arg, "-version:") == 0 ||
- JLI_StrCmp(arg, "-no-jre-restrict-search") == 0 ||
- JLI_StrCmp(arg, "-jre-restrict-search") == 0 ||
- JLI_StrCCmp(arg, "-splash:") == 0) {
+ } else if (JLI_StrCCmp(arg, "-splash:") == 0) {
; /* Ignore machine independent options already handled */
} else if (ProcessPlatformOption(arg)) {
; /* Processing of platform dependent options */
} else if (RemovableOption(arg)) {
; /* Do not pass option to vm. */