| #include "../git-compat-util.h" |
| |
| int gitsetenv(const char *name, const char *value, int replace) |
| { |
| int out; |
| size_t namelen, valuelen; |
| char *envstr; |
| |
| if (!name || strchr(name, '=') || !value) { |
| errno = EINVAL; |
| return -1; |
| } |
| if (!replace) { |
| char *oldval = NULL; |
| oldval = getenv(name); |
| if (oldval) return 0; |
| } |
| |
| namelen = strlen(name); |
| valuelen = strlen(value); |
| envstr = malloc((namelen + valuelen + 2)); |
| if (!envstr) { |
| errno = ENOMEM; |
| return -1; |
| } |
| |
| memcpy(envstr, name, namelen); |
| envstr[namelen] = '='; |
| memcpy(envstr + namelen + 1, value, valuelen); |
| envstr[namelen + valuelen + 1] = 0; |
| |
| out = putenv(envstr); |
| /* putenv(3) makes the argument string part of the environment, |
| * and changing that string modifies the environment --- which |
| * means we do not own that storage anymore. Do not free |
| * envstr. |
| */ |
| |
| return out; |
| } |