stdlib.c

   1 #include <stdlib.h>
   2 #include <string.h>
   3
   4 char **environ;
   5
   6 int exit(int status)
   7 {
   8         return _exit(status);
   9 }
  10
  11 char *getenv(char *name)
  12 {
  13         char **p = environ;
  14         int len = strlen(name);
  15         for (; *p; p++)
  16                 if (!memcmp(name, *p, len) && (*p)[len] == '=')
  17                         return *p + len + 1;
  18         return NULL;
  19 }