3 files changed, 14 insertions, 4 deletions
diff --git a/src/lib/libkogata/draw.c b/src/lib/libkogata/draw.c
index 53070ad..2806df4 100644
--- a/src/lib/libkogata/draw.c
+++ b/src/lib/libkogata/draw.c
@@ -88,7 +88,7 @@ void g_hline(fb_t *fb, int x, int y, int w, color_t c) {
 		for (int u = x; u < x + w; u++) {
 			fb->data[y * fb->geom.pitch + u] = (c & 0xFF);
 		}
-	} else if (fb->geom.bpp == 15 || fb->geom.bpp == 15) {
+	} else if (fb->geom.bpp == 15 || fb->geom.bpp == 16) {
 		for (int u = x; u < x + w; u++) {
 			uint16_t *p = (uint16_t*)(fb->data + y * fb->geom.pitch + 2 * u);
 			*p = (c & 0xFFFF);
@@ -110,7 +110,7 @@ void g_vline(fb_t *fb, int x, int y, int h, color_t c) {
 		for (int v = y; v < y + h; v++) {
 			fb->data[v * fb->geom.pitch + x] = (c & 0xFF);
 		}
-	} else if (fb->geom.bpp == 15 || fb->geom.bpp == 15) {
+	} else if (fb->geom.bpp == 15 || fb->geom.bpp == 16) {
 		for (int v = y; v < y + h; v++) {
 			uint16_t *p = (uint16_t*)(fb->data + v * fb->geom.pitch + 2 * x);
 			*p = (c & 0xFFFF);
@@ -145,7 +145,7 @@ void g_fillrect(fb_t *fb, int x, int y, int w, int h, color_t c) {
 				fb->data[v * fb->geom.pitch + u] = (c & 0xFF);
 			}
 		}
-	} else if (fb->geom.bpp == 15 || fb->geom.bpp == 15) {
+	} else if (fb->geom.bpp == 15 || fb->geom.bpp == 16) {
 		for (int v = y; v < y + h; v++) {
 			for (int u = x; u < x + w; u++) {
 				uint16_t *p = (uint16_t*)(fb->data + v * fb->geom.pitch + 2 * u);
diff --git a/src/lib/libkogata/malloc.c b/src/lib/libkogata/malloc.c
index 2a3345f..3777123 100644
--- a/src/lib/libkogata/malloc.c
+++ b/src/lib/libkogata/malloc.c
@@ -1,6 +1,8 @@
 #include <malloc.h>
 #include <slab_alloc.h>
 
+#include <string.h>
+
 #include <syscall.h>
 #include <region_alloc.h>
 
@@ -50,9 +52,17 @@ void malloc_setup() {
 }
 
 void* malloc(size_t size) {
+	if (size == 0) return 0;
+
 	return slab_alloc(mem_allocator, size);
 }
 
+void* calloc(size_t nmemb, size_t sz) {
+	void* r = malloc(nmemb * sz);
+	if (r != 0) memset(r, 0, nmemb * sz);
+	return r;
+}
+
 void free(void* ptr) {
 	slab_free(mem_allocator, ptr);
 }
diff --git a/src/lib/libkogata/unistd.c b/src/lib/libkogata/unistd.c
index 80a32e4..101e02e 100644
--- a/src/lib/libkogata/unistd.c
+++ b/src/lib/libkogata/unistd.c
@@ -24,7 +24,7 @@ int chdir(const char* path) {
 
 	stat_t st;
 	if (!stat(cwd_buf2, &st)) return -1;
-	if (!st.type & FT_DIR) return -1;
+	if (!(st.type & FT_DIR)) return -1;
 
 	strcpy(cwd_buf, cwd_buf2);
 	return 0;