| 1 | #include <stdlib.h> |
| 2 | #include <string.h> |
| 3 | #include <unistd.h> |
| 4 | |
| 5 | char *getenv(const char *name) |
| 6 | { |
| 7 | #ifdef __wasilibc_unmodified_upstream // Lazy environment variable init. |
| 8 | #else |
| 9 | // This specialized header is included within the function body to arranges for |
| 10 | // the environment variables to be lazily initialized. It redefined `__environ`, |
| 11 | // so don't remove or reorder it with respect to other code. |
| 12 | #include "wasi/libc-environ-compat.h" |
| 13 | #endif |
| 14 | size_t l = __strchrnul(name, '=') - name; |
| 15 | if (l && !name[l] && __environ) |
| 16 | for (char **e = __environ; *e; e++) |
| 17 | if (!strncmp(name, *e, l) && l[*e] == '=') |
| 18 | return *e + l+1; |
| 19 | return 0; |
| 20 | } |