Squash commits for public release

userland/utilities/uname/.info.mk

@@ -0,0 +1,5 @@
+APPS += UNAME
+
+UNAME_NAME = uname
+UNAME_LIBS = c
+UNAME_INSTALL_PATH = bin/

userland/utilities/uname/BUILD.gn

@@ -0,0 +1,8 @@
+import("//build/userland/TEMPLATE.gni")
+
+xOS_executable("uname") {
+  install_path = "bin/"
+  sources = [ "main.c" ]
+  configs = [ "//build/userland:userland_flags" ]
+  deplibs = [ "libc" ]
+}

userland/utilities/uname/main.c

@@ -0,0 +1,68 @@
+#include <stdio.h>
+#include <string.h>
+#include <sys/utsname.h>
+#include <unistd.h>
+
+int main(int argc, char** argv)
+{
+    int fd, i;
+
+    utsname_t uts;
+    int rc = uname(&uts);
+    if (rc < 0) {
+        return 1;
+    }
+
+    int flag_s = 0;
+    int flag_n = 0;
+    int flag_r = 0;
+    int flag_m = 0;
+    if (argc == 1) {
+        flag_s = 1;
+    } else {
+        for (int i = 1; i < argc; ++i) {
+            if (argv[i][0] == '-') {
+                for (const char* o = &argv[i][1]; *o; ++o) {
+                    switch (*o) {
+                    case 's':
+                        flag_s = 1;
+                        break;
+                    case 'n':
+                        flag_n = 1;
+                        break;
+                    case 'r':
+                        flag_r = 1;
+                        break;
+                    case 'm':
+                        flag_m = 1;
+                        break;
+                    case 'a':
+                        flag_s = flag_n = flag_r = flag_m = 1;
+                        break;
+                    }
+                }
+            }
+        }
+    }
+
+    if (!flag_s && !flag_n && !flag_r && !flag_m) {
+        flag_s = 1;
+    }
+
+    if (flag_s) {
+        printf("%s ", uts.sysname);
+    }
+    if (flag_n) {
+        printf("%s ", uts.nodename);
+        // write(1, uts.nodename, strlen(uts.nodename));
+    }
+    if (flag_r) {
+        printf("%s ", uts.release);
+        // write(1, uts.release, strlen(uts.release));
+    }
+    if (flag_m) {
+        printf("%s ", uts.machine);
+        // write(1, uts.machine, strlen(uts.machine));
+    }
+    return 0;
+}