53 lines
1.5 KiB
C
53 lines
1.5 KiB
C
/*
|
|
* Copyright (c) 2011, 2012, 2013 Jonas 'Sortie' Termansen.
|
|
*
|
|
* Permission to use, copy, modify, and distribute this software for any
|
|
* purpose with or without fee is hereby granted, provided that the above
|
|
* copyright notice and this permission notice appear in all copies.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
|
|
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
|
|
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
|
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
|
|
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
|
|
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
|
*
|
|
* unistd/execlp.c
|
|
* Loads a program image.
|
|
*/
|
|
|
|
#include <stdarg.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
|
|
int execlp(const char* filename, const char* argv0, ...)
|
|
{
|
|
if ( !argv0 )
|
|
return execvp(filename, (char* const*) &argv0);
|
|
|
|
va_list args;
|
|
va_start(args, argv0);
|
|
size_t numargs = 1;
|
|
while ( argv0 && va_arg(args, const char*) )
|
|
numargs++;
|
|
va_end(args);
|
|
|
|
char** argv = (char**) malloc(sizeof(char*) * (numargs+1));
|
|
if ( !argv )
|
|
return -1;
|
|
|
|
argv[0] = (char*) argv0;
|
|
va_start(args, argv0);
|
|
for ( size_t i = 1; i <= numargs; i++ )
|
|
argv[i] = (char*) va_arg(args, const char*);
|
|
va_end(args);
|
|
argv[numargs] = NULL;
|
|
|
|
int result = execvp(filename, argv);
|
|
|
|
free(argv);
|
|
|
|
return result;
|
|
}
|