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authorErlang/OTP <[email protected]>2009-11-20 14:54:40 +0000
committerErlang/OTP <[email protected]>2009-11-20 14:54:40 +0000
commit84adefa331c4159d432d22840663c38f155cd4c1 (patch)
treebff9a9c66adda4df2106dfd0e5c053ab182a12bd /erts/etc/vxworks/erl.exec.c
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The R13B03 release.OTP_R13B03
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diff --git a/erts/etc/vxworks/erl.exec.c b/erts/etc/vxworks/erl.exec.c
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+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 1997-2009. All Rights Reserved.
+ *
+ * The contents of this file are subject to the Erlang Public License,
+ * Version 1.1, (the "License"); you may not use this file except in
+ * compliance with the License. You should have received a copy of the
+ * Erlang Public License along with this software. If not, it can be
+ * retrieved online at http://www.erlang.org/.
+ *
+ * Software distributed under the License is distributed on an "AS IS"
+ * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+ * the License for the specific language governing rights and limitations
+ * under the License.
+ *
+ * %CopyrightEnd%
+ */
+/*
+ A simpified version of the 'erl.exec' "startup script".
+ Called (e.g. from VxWorks shell) with all arguments in a
+ single string, e.g.: erl "-name thisnode -s mymod myfunc".
+ These arguments are handled as in 'erl.exec':
+ -name
+ -sname
+ -noshell
+ -noinput
+ anything else is just passed on to the emulator. Note that there
+ is no automatic start of epmd, that -oldshell is implicit, and
+ that you need to set current directory appropriately if you want
+ auto-load of port programs
+*/
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#ifndef DEFAULT_HOMEDIR /* used if environment HOME isn't set */
+#define DEFAULT_HOMEDIR "/"
+#endif
+
+#define ARGLEN 2048 /* Total length of args passed to erl_main */
+#define ARGMAX 64 /* Max no of "extra" args */
+
+static char *erl_cmd = "erl_main -n ";
+
+static toomuch()
+{
+ fprintf(stderr, "erl: Too many arguments\n");
+ return(-1);
+}
+
+static toolittle(arg)
+char *arg;
+{
+ fprintf(stderr, "erl.exec: Missing argument for %s\n", arg);
+ return(-1);
+}
+
+erl_exec(arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8, arg9, arg10)
+int arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8, arg9, arg10;
+{
+ char *shell = "-oldshell ", *noshell = "",
+ *home, *rootdir, *bindir, *progname;
+ char cmd[ARGLEN], eargs[ARGLEN], iargs[ARGLEN];
+ char *args[ARGMAX], *arglast = NULL, *argp;
+ int nargs = 0, len, i;
+
+ if ((rootdir = getenv("ROOTDIR")) == NULL ||
+ (bindir = getenv("BINDIR")) == NULL ||
+ (progname = getenv("PROGNAME")) == NULL) {
+ fprintf(stderr, "erl.exec: ROOTDIR, BINDIR, and PROGNAME must be set.");
+ return -1;
+ }
+ eargs[0] = '\0';
+ iargs[0] = '\0';
+ if ((home = getenv("HOME")) == NULL)
+ home = DEFAULT_HOMEDIR;
+ argp = strtok_r((char *)arg1, " \t", &arglast);
+ while (argp != NULL) {
+ if (strcmp(argp, "-name") == 0) {
+ if ((argp = strtok_r((char *)NULL, " \t", &arglast)) == NULL)
+ return(toolittle("-name"));
+ strcat(iargs, "-name ");
+ strcat(iargs, argp);
+ strcat(iargs, " ");
+ } else if (strcmp(argp, "-sname") == 0) {
+ if ((argp = strtok_r((char *)NULL, " \t", &arglast)) == NULL)
+ return(toolittle("-sname"));
+ strcat(iargs, "-sname ");
+ strcat(iargs, argp);
+ strcat(iargs, " ");
+ } else if (strcmp(argp, "-noshell") == 0) {
+ strcat(iargs, "-noshell -noinp_shell ");
+ } else if (strcmp(argp, "-noinput") == 0) {
+ strcat(iargs, "-noshell -noinput ");
+ } else {
+ if (nargs > ARGMAX - 1)
+ return(toomuch());
+ args[nargs++] = argp;
+ }
+ argp = strtok_r((char *)NULL, " \t", &arglast);
+ }
+ strcpy(cmd, erl_cmd);
+ strcat(cmd, eargs);
+ strcat(cmd, " -- -root ");
+ strcat(cmd, rootdir);
+ strcat(cmd, " -progname ");
+ strcat(cmd, progname);
+ strcat(cmd, " -- ");
+ strcat(cmd, "-home ");
+ strcat(cmd, home);
+ strcat(cmd, " ");
+ strcat(cmd, iargs);
+
+ len = strlen(cmd);
+ for (i = 0; i < nargs; i++) {
+ if (len + strlen(args[i]) + 2 >= ARGLEN)
+ return(toomuch());
+ cmd[len++] = ' ';
+ strcpy(&cmd[len], args[i]);
+ len += strlen(args[i]);
+ }
+ argcall(cmd);
+}
+