graphics!

1 files changed, 24 insertions, 0 deletions

diff --git a/src/user/knob/block.c b/src/user/knob/block.c
index 94bd073..90f79e3 100644
--- a/src/user/knob/block.c
+++ b/src/user/knob/block.c
@@ -33,4 +33,28 @@ char *strdup(const char *from) {
   char *buf = get_block(end - from);
   blockcpy(buf, from, end - from);
   return buf;
+}
+
+__attribute__ ((pure))
+bool strequ(const char *a, const char *b) {
+  while (true) {
+    if ((*a == '\0') != (*b == '\0'))
+      return false;
+    if (*a == '\0')
+      return true;
+    if (*a != *b)
+      return false;
+    ++a;
+    ++b;
+  }
+}
+
+__attribute__ ((pure))
+uint32_t strlen(const char *str) {
+  uint32_t len = 0;
+  while (*str) {
+    ++len;
+    ++str;
+  }
+  return len;
 }
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