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/***
*execvp.c - execute a file and search along PATH
*
* Copyright (c) 1985-1991, Microsoft Corporation. All rights reserved.
*
*Purpose:
* defines _execvp() - execute a file and search along PATH
*
*Revision History:
* 10-17-83 RN written
* 10-29-85 TC added execvpe capability
* 12-11-87 JCR Added "_LOAD_DS" to declaration
* 11-20-89 GJF Fixed copyright, indents. Added const attribute to
* types of filename and argvector.
* 03-08-90 GJF Replaced _LOAD_DS with _CALLTYPE1, added #include
* <cruntime.h> and removed #include <register.h>
* 05-21-90 GJF Fixed stack checking pragma syntax.
* 08-24-90 SBM Removed check_stack pragma since workhorse execve
* does stack checks
* 09-27-90 GJF New-style function declarator.
* 01-17-91 GJF ANSI naming.
* 02-14-90 SRW Use NULL instead of _environ to get default.
*
*******************************************************************************/
#include <cruntime.h>
#include <stdlib.h>
#include <process.h>
/***
*int _execvp(filename, argvector) - execute file; search along PATH
*
*Purpose:
* Execute the given file with given path and current environ.
* try to execute the file. start with the name itself (directory '.'),
* and if that doesn't work start prepending pathnames from the
* environment until one works or we run out. if the file is a pathname,
* don't go to the environment to get alternate paths. if errno comes
* back ENOEXEC, try it as a shell command file with up to MAXARGS-2
* arguments from the original vector. if a needed text file is busy,
* wait a little while and try again before despairing completely
* Actually calls _execvpe() to do all the work.
*
*Entry:
* char *filename - file to execute
* char **argvector - vector of arguments
*
*Exit:
* destroys the calling process (hopefully)
* if fails, returns -1
*
*Exceptions:
*
*******************************************************************************/
int _CALLTYPE1 _execvp (
REG3 const char *filename,
const char * const *argvector
)
{
return _execvpe( filename, argvector, NULL );
}
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