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+/***
+*execle.c - execute a file with arg list and environment
+*
+* Copyright (c) 1985-1991, Microsoft Corporation. All rights reserved.
+*
+*Purpose:
+* defines _execle() - execute a file
+*
+*Revision History:
+* 10-14-83 RN written
+* 12-11-87 JCR Added "_LOAD_DS" to declaration
+* 11-20-89 GJF Fixed copyright, indents. Added const attribute to
+* types of filename and arglist. #include-d PROCESS.H
+* and added ellipsis to match prototype.
+* 03-08-90 GJF Replaced _LOAD_DS with _CALLTYPE2, added #include
+* <cruntime.h> and removed #include <register.h>
+* 07-24-90 SBM Removed redundant includes, replaced <assertm.h> by
+* <assert.h>
+* 09-27-90 GJF New-style function declarator.
+* 01-17-91 GJF ANSI naming.
+* 07-16-93 SRW ALPHA Merge
+*
+*******************************************************************************/
+
+#include <cruntime.h>
+#include <assert.h>
+#include <stddef.h>
+#include <process.h>
+#include <stdarg.h>
+#include <internal.h>
+#include <malloc.h>
+
+/***
+*int _execle(filename, arglist) - execute a file
+*
+*Purpose:
+* Execute the given file (overlays the calling process).
+* We must dig the environment vector out of the stack and pass it
+* and address of argument vector to execve.
+*
+*Entry:
+* char *filename - file to execute
+* char *arglist - argument list followed by environment
+* should be called like _execle(path, arg0, arg1, ..., argn, NULL, envp);
+*
+*Exit:
+* destroys calling process (hopefully)
+* if fails, returns -1.
+*
+*Exceptions:
+*
+*******************************************************************************/
+
+int _CALLTYPE2 _execle (
+ const char *filename,
+ const char *arglist,
+ ...
+ )
+{
+ va_list vargs;
+ char * argbuf[64];
+ char ** argv;
+ char ** envp;
+ int result;
+
+ assert(filename != NULL);
+ assert(*filename != '\0');
+ assert(arglist != NULL);
+ assert(*arglist != '\0');
+
+ va_start(vargs, arglist);
+ argv = _capture_argv(&vargs, arglist, argbuf, 64);
+ envp = va_arg(vargs, char **);
+ va_end(vargs);
+
+ result = _execve(filename,argv,envp);
+ if (argv && argv != argbuf) free(argv);
+ return result;
+}