blob: 034bbf0a7d95e718e2a195da4dd21bd9495d4c0d (
plain)
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
|
#include <u.h>
#include <libc.h>
int
putenv(char *name, char *val)
{
char ename[100];
int f, n;
if(name[0]=='\0' || strcmp(name, ".")==0 || strcmp(name, "..")==0 || strchr(name, '/')!=nil
|| strlen(name) >= sizeof(ename)-5){
werrstr("bad env name: %s", name);
return -1;
}
snprint(ename, sizeof(ename), "/env/%s", name);
f = create(ename, OWRITE|OCEXEC, 0664);
if(f < 0)
return -1;
n = strlen(val);
if(write(f, val, n) != n){
close(f);
return -1;
}
close(f);
return 0;
}
|
