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/*
* Set an environment vairable.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <rtems.h>
#include <rtems/shell.h>
#include "internal.h"
/*
* Limit examining or copying more than 256 characters at a time.
* Yes, this is very arbitrary. If there are POSIX constants, then
* they should be used.
*/
#define MAX 156
int rtems_shell_main_setenv(int argc, char *argv[])
{
char* env = NULL;
char* string = NULL;
int len = 0;
int arg;
char* p;
if (argc <= 2) {
printf("error: no variable or string\n");
return 1;
}
env = argv[1];
for (arg = 2; arg < argc; arg++)
len += strnlen(argv[arg], MAX);
len += argc - 2 - 1;
string = malloc(len + 1);
if (!string) {
printf("error: no memory\n");
return 1;
}
for (arg = 2, p = string; arg < argc; arg++) {
strncpy(p, argv[arg], MAX);
p += strnlen(argv[arg], MAX);
if (arg < (argc - 1)) {
*p = ' ';
p++;
}
}
if (setenv(env, string, 1) < 0) {
printf( "error: %s\n", strerror(errno) );
free( string );
return 1;
}
free( string );
return 0;
}
rtems_shell_cmd_t rtems_shell_SETENV_Command = {
"setenv", /* name */
"setenv [var] [string]", /* usage */
"misc", /* topic */
rtems_shell_main_setenv, /* command */
NULL, /* alias */
NULL /* next */
};
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