blob: 0a458968669a6280f070271a80a6069af9152b43 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
|
#include <stdlib.h>
#include <string.h>
#include <errno.h>
int __putenv(char *s, int a);
int setenv(const char *var, const char *value, int overwrite)
{
char *s;
int l1, l2;
if (!var || !*var || strchr(var, '=')) {
errno = EINVAL;
return -1;
}
if (!overwrite && getenv(var)) return 0;
l1 = strlen(var);
l2 = strlen(value);
s = malloc(l1+l2+2);
if (s) {
memcpy(s, var, l1);
s[l1] = '=';
memcpy(s+l1+1, value, l2);
s[l1+l2+1] = 0;
if (!__putenv(s, 1)) return 0;
}
free(s);
errno = ENOMEM;
return -1;
}
|
