ref: 2f307820bc3dab666974d065749aef367982f420
dir: /src/libc/arch/posix/getenv.c/
#include <stdlib.h> #include <string.h> #undef getenv extern char **_environ; char * getenv(const char *name) { char **p, *s; size_t len = strlen(name); for (p = _environ; s = *p; ++p) { if (!strncmp(name, s, len) && s[len] == '=') return s + len + 1; } return NULL; }