support solaris

docs/README.md

@@ -10,9 +10,21 @@ Most of the functions are here.
 [c-env-utils: include/env_utils.h File Reference](https://matyalatte.github.io/c-env-utils/env__utils_8h.html)  
 
 c-env-utils only supports utf8 strings.  
-You should use `env_utils_windows.h` if you want to use utf16 strings on Windows.
+You should use `env_utils_windows.h` if you want to use utf16 strings on Windows.  
 [c-env-utils: include/env_utils_windows.h File Reference](https://matyalatte.github.io/c-env-utils/env__utils__windows_8h.html)  
 
+## Platforms
+
+c-env-utils supports most of the desktop operating systems.
+
+- Windows
+- macOS
+- Linux
+- BSD
+- Haiku
+- Solaris
+- Other unix variants (maybe)
+
 ## Example
 
 ```c
@@ -35,7 +47,7 @@ int main(void) {
     printf("User: %s\n", username);
     envuFree(username);
 
-    // Get an environment variable
+    // An environment variable
     char *paths = envuGetEnv("PATH");
     printf("PATH: %s\n", paths);
     envuFree(paths);

src/unix.c

@@ -215,8 +215,13 @@ static struct passwd *getpwuid_safe(char **buf) {
     if (*buf == NULL)
         return NULL;
 
+#ifdef __sun
+    // Solaris has a little bit different APIs
+    result = getpwuid_r(getuid(), &pwd, *buf, bufsize);
+#else
     int ret = getpwuid_r(getuid(), &pwd, *buf, bufsize, &result);
     if (ret != 0) return NULL;
+#endif
     return result;
 }
 
@@ -260,10 +265,11 @@ char *envuGetUsername() {
     return str;
 }
 
-// Darwin, Linux, FreeBSD, OpenBSD, NetBSD, Haiku, etc.
+// Darwin, Linux, FreeBSD, OpenBSD, NetBSD, Haiku, SunOS, etc.
 char *envuGetOS() {
     struct utsname buf = { 0 };
-    if (uname(&buf) != 0) {
+    // Note: uname(&buf) can be positive on Solaris
+    if (uname(&buf) == -1) {
         return AllocStrWithConst("");
     }
     return AllocStrWithConst(buf.sysname);