stuff

12 files changed, 153 insertions, 33 deletions

diff --git a/userland/libc/Makefile b/userland/libc/Makefile
index 8db5a16..936bde6 100644
--- a/userland/libc/Makefile
+++ b/userland/libc/Makefile
@@ -2,7 +2,7 @@ CC="i686-sb-gcc"
 AR="i686-sb-ar"
 AS="i686-sb-as"
 CFLAGS = -ggdb -ffreestanding -nostdlib -O0 -Wall -Wextra -pedantic -Werror -Wimplicit-fallthrough -I./include/ -static -I../../include/ -Wno-int-conversion -Wno-unused-parameter
-OBJ=crt0.o libc.o malloc/malloc.o pty.o sys/mman/mmap.o sys/mman/munmap.o memset.o assert.o stdio/snprintf.o stdio/vfprintf.o string/memcpy.o string/memcmp.o string/strcmp.o ubsan.o string/strcpy.o isspace.o stdio/puts.o stdio/putchar.o dirent/opendir.o dirent/readdir.o dirent/closedir.o unistd/getopt.o dirent/scandir.o dirent/alphasort.o stdio/printf.o stdio/vdprintf.o stdio/vprintf.o stdio/dprintf.o stdio/vprintf.o string/strlen.o string/strnlen.o stdio/stdin.o stdio/getchar.o stdio/fgetc.o arpa/inet/htons.o arpa/inet/htonl.o stdio/fread.o stdio/fwrite.o stdio/fopen.o stdio/fclose.o stdio/fseek.o ctype/isascii.o stdio/fprintf.o stdlib/atoi.o stdlib/strtol.o ctype/toupper.o ctype/tolower.o string/strcat.o string/strchr.o string/sscanf.o sys/stat/stat.o stdlib/getenv.o string/strrchr.o stdio/ftell.o stdio/tmpfile.o stdio/fgets.o stdio/feof.o stdio/fscanf.o stdio/ungetc.o string/strncmp.o stdio/fputc.o string/strncpy.o stdio/remove.o stdio/ferror.o stdio/fputs.o stdlib/rand.o stdlib/srand.o unistd/getpid.o stdlib/strtoul.o stdio/fflush.o stdlib/abort.o string/strcspn.o time/localtime.o time/time.o time/clock_gettime.o time/gmtime.o time/strftime.o string/strpbrk.o ctype/isdigit.o ctype/isalpha.o ctype/isxdigit.o ctype/ispunct.o stdio/setvbuf.o stdio/fileno.o stdio/putc.o stdio/sprintf.o stdlib/abs.o string/strspn.o stdlib/qsort.o string/memmove.o setjmp/longjmp.o setjmp/setjmp.o libgen/basename.o string/strdup.o string/strndup.o string/strlcpy.o stdlib/atexit.o stdio/open_memstream.o libgen/dirname.o unistd/unlink.o string/strstr.o string/strcasecmp.o string/strncasecmp.o stdlib/mkstemp.o string/strtok.o unistd/execvp.o unistd/_exit.o ctype/isalnum.o time/ctime_r.o stdlib/strtold.o sys/time/gettimeofday.o stdio/fgetpos.o stdio/fsetpos.o ctype/isprint.o stdlib/system.o stdio/tmpnam.o unistd/msleep.o stdlib/atof.o stdlib/strtod.o stdio/rename.o sys/stat/mkdir.o unistd/uptime.o unistd/ftruncate.o sys/socket/recvfrom.o sys/socket/sendto.o signal/kill.o signal/sigaction.o unistd/chdir.o unistd/getcwd.o stdio/getdelim.o stdio/getline.o unistd/isatty.o sys/socket/listen.o stdlib/realpath.o systemcall.o sys/random/randomfill.o fcntl/open.o unistd/write.o unistd/pwrite.o fcntl/open_process.o tb/sb.o tb/sv.o string/memchr.o stdlib/atol.o stdlib/atoll.o stdlib/strtoll.o sys/stat/fstat.o unistd/lseek.o ctype/isupper.o ctype/islower.o ctype/isblank.o ctype/isgraph.o ctype/iscntrl.o math/ldexp.o sys/socket/connect.o sys/socket/setsockopt.o arpa/inet/ntohl.o arpa/inet/ntohs.o netdb/getaddrinfo.o tb/sha1.o sys/socket/getpeername.o
+OBJ=crt0.o libc.o malloc/malloc.o pty.o sys/mman/mmap.o sys/mman/munmap.o memset.o assert.o stdio/snprintf.o stdio/vfprintf.o string/memcpy.o string/memcmp.o string/strcmp.o ubsan.o string/strcpy.o isspace.o stdio/puts.o stdio/putchar.o dirent/opendir.o dirent/readdir.o dirent/closedir.o unistd/getopt.o dirent/scandir.o dirent/alphasort.o stdio/printf.o stdio/vdprintf.o stdio/vprintf.o stdio/dprintf.o stdio/vprintf.o string/strlen.o string/strnlen.o stdio/stdin.o stdio/getchar.o stdio/fgetc.o arpa/inet/htons.o arpa/inet/htonl.o stdio/fread.o stdio/fwrite.o stdio/fopen.o stdio/fclose.o stdio/fseek.o ctype/isascii.o stdio/fprintf.o stdlib/atoi.o stdlib/strtol.o ctype/toupper.o ctype/tolower.o string/strcat.o string/strchr.o string/sscanf.o sys/stat/stat.o stdlib/getenv.o string/strrchr.o stdio/ftell.o stdio/tmpfile.o stdio/fgets.o stdio/feof.o stdio/fscanf.o stdio/ungetc.o string/strncmp.o stdio/fputc.o string/strncpy.o stdio/remove.o stdio/ferror.o stdio/fputs.o stdlib/rand.o stdlib/srand.o unistd/getpid.o stdlib/strtoul.o stdio/fflush.o stdlib/abort.o string/strcspn.o time/localtime.o time/time.o time/clock_gettime.o time/gmtime.o time/strftime.o string/strpbrk.o ctype/isdigit.o ctype/isalpha.o ctype/isxdigit.o ctype/ispunct.o stdio/setvbuf.o stdio/fileno.o stdio/putc.o stdio/sprintf.o stdlib/abs.o string/strspn.o stdlib/qsort.o string/memmove.o setjmp/longjmp.o setjmp/setjmp.o libgen/basename.o string/strdup.o string/strndup.o string/strlcpy.o stdlib/atexit.o stdio/open_memstream.o libgen/dirname.o unistd/unlink.o string/strstr.o string/strcasecmp.o string/strncasecmp.o stdlib/mkstemp.o string/strtok.o unistd/execvp.o unistd/_exit.o ctype/isalnum.o time/ctime_r.o stdlib/strtold.o sys/time/gettimeofday.o stdio/fgetpos.o stdio/fsetpos.o ctype/isprint.o stdlib/system.o stdio/tmpnam.o unistd/msleep.o stdlib/atof.o stdlib/strtod.o stdio/rename.o sys/stat/mkdir.o unistd/uptime.o unistd/ftruncate.o sys/socket/recvfrom.o sys/socket/sendto.o signal/kill.o signal/sigaction.o unistd/chdir.o unistd/getcwd.o stdio/getdelim.o stdio/getline.o unistd/isatty.o sys/socket/listen.o stdlib/realpath.o systemcall.o sys/random/randomfill.o fcntl/open.o unistd/write.o unistd/pwrite.o fcntl/open_process.o tb/sb.o tb/sv.o string/memchr.o stdlib/atol.o stdlib/atoll.o stdlib/strtoll.o sys/stat/fstat.o unistd/lseek.o ctype/isupper.o ctype/islower.o ctype/isblank.o ctype/isgraph.o ctype/iscntrl.o math/ldexp.o sys/socket/connect.o sys/socket/setsockopt.o arpa/inet/ntohl.o arpa/inet/ntohs.o netdb/getaddrinfo.o tb/sha1.o sys/socket/getpeername.o fcntl/fcntl.o
 all: libc.a
 
 %.o: %.c
diff --git a/userland/libc/include/stdio.h b/userland/libc/include/stdio.h
index b0bfbd1..aebf086 100644
--- a/userland/libc/include/stdio.h
+++ b/userland/libc/include/stdio.h
@@ -68,7 +68,6 @@ int puts(const char *s);
 int brk(void *addr);
 void *sbrk(intptr_t increment);
 int printf(const char *format, ...);
-int mread(int fd, void *buf, size_t count, int blocking);
 int pread(int fd, void *buf, size_t count, size_t offset);
 int read(int fd, void *buf, size_t count);
 int fork(void);
diff --git a/userland/libc/include/syscall.h b/userland/libc/include/syscall.h
index fee2e43..e1c0b07 100644
--- a/userland/libc/include/syscall.h
+++ b/userland/libc/include/syscall.h
@@ -6,7 +6,7 @@
 #include <sys/types.h>
 
 #define SYS_OPEN 0
-#define SYS_MREAD 1
+#define SYS_READ 1
 #define SYS_WRITE 2
 #define SYS_PREAD 3
 #define SYS_PWRITE 4
@@ -46,6 +46,7 @@
 #define SYS_CONNECT 38
 #define SYS_SETSOCKOPT 39
 #define SYS_GETPEERNAME 40
+#define SYS_FCNTL 41
 
 int syscall(uint32_t eax, uint32_t ebx, uint32_t ecx, uint32_t edx,
             uint32_t esi, uint32_t edi);
diff --git a/userland/libc/include/time.h b/userland/libc/include/time.h
index 567e9ef..b494f6c 100644
--- a/userland/libc/include/time.h
+++ b/userland/libc/include/time.h
@@ -4,6 +4,7 @@
 #include <stddef.h>
 
 #define CLOCK_REALTIME 0
+#define CLOCK_MONOTONIC_RAW 1
 
 struct tm {
   int tm_sec;
diff --git a/userland/libc/libc.c b/userland/libc/libc.c
index 8129448..31d8648 100644
--- a/userland/libc/libc.c
+++ b/userland/libc/libc.c
@@ -203,12 +203,8 @@ int pread(int fd, void *buf, size_t count, size_t offset) {
   RC_ERRNO(syscall(SYS_PREAD, (u32)&args, 0, 0, 0, 0));
 }
 
-int mread(int fd, void *buf, size_t count, int blocking) {
-  RC_ERRNO(syscall(SYS_MREAD, fd, buf, count, blocking, 0));
-}
-
 int read(int fd, void *buf, size_t count) {
-  return mread(fd, buf, count, 1);
+  RC_ERRNO(syscall(SYS_READ, fd, buf, count, 0, 0));
 }
 
 int dup2(int org_fd, int new_fd) {
diff --git a/userland/libgui/Makefile b/userland/libgui/Makefile
index 584fda6..bdd7530 100644
--- a/userland/libgui/Makefile
+++ b/userland/libgui/Makefile
@@ -12,5 +12,9 @@ libgui.o: libgui.c
 libgui.a: $(OBJ)
 	$(AR) rcs libgui.a $^
 
+install:
+	mkdir -p ../../sysroot/usr/include
+	cp libgui.h ../../sysroot/usr/include/
+
 clean:
 	rm $(OBJ) $(BINS)
diff --git a/userland/libgui/libgui.c b/userland/libgui/libgui.c
index 07edbdd..458ab07 100644
--- a/userland/libgui/libgui.c
+++ b/userland/libgui/libgui.c
@@ -7,6 +7,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include <sys/mman.h>
+#include <typedefs.h>
 #include <unistd.h>
 
 #define place_pixel_pos(_p, _pos)                                              \
@@ -191,6 +192,27 @@ void GUI_OverwriteFont(GUI_Window *w, uint32_t px, uint32_t py,
   }
 }
 
+void GUI_DrawLine(GUI_Window *w, uint32_t sx, uint32_t sy, uint32_t dx,
+                  uint32_t dy, uint32_t rgba) {
+  for (;;) {
+    // Bounds checking
+    if (sy * w->sx + sx > w->sy * w->sx)
+      break;
+
+    if (sx >= dx - 1 && sy >= dy - 1) {
+      break;
+    }
+    uint32_t *ptr = w->bitmap_ptr + (sy * w->sx) + sx;
+    *ptr = rgba;
+    if (sx < dx - 1) {
+      sx++;
+    }
+    if (sy < dy - 1) {
+      sy++;
+    }
+  }
+}
+
 void GUI_DrawFont(GUI_Window *w, uint32_t px, uint32_t py, const uint32_t c) {
   int sx, sy;
   sx = 8;
@@ -260,13 +282,20 @@ void GUI_EventLoop(GUI_Window *w, void (*event_handler)(WS_EVENT ev)) {
 // window can be given a sufficently large buffer such that buffers
 // don't have to be resized if the window is resized.
 #define MAX_WINDOW_SIZE (1920 * 1080)
-void GUI_Resize(GUI_Window *w, uint32_t sx, uint32_t sy) {
+int GUI_BufferResize(GUI_Window *w, uint32_t sx, uint32_t sy) {
   if (sx * sy > MAX_WINDOW_SIZE) {
-    return;
+    return 0;
   }
-
   w->sx = sx;
   w->sy = sy;
+  return 1;
+}
+
+int GUI_SendResize(GUI_Window *w, uint32_t sx, uint32_t sy) {
+  if (!GUI_BufferResize(w, sx, sy)) {
+    return 0;
+  }
+
   char buffer[sizeof(uint8_t) + sizeof(uint32_t) * 2];
   uint8_t l = 2;
   memcpy(buffer, &l, sizeof(l));
@@ -274,6 +303,19 @@ void GUI_Resize(GUI_Window *w, uint32_t sx, uint32_t sy) {
   memcpy(buffer + sizeof(uint8_t) + sizeof(uint32_t), &sy, sizeof(sy));
   int len = sizeof(uint8_t) + sizeof(uint32_t) * 2;
   write(w->ws_socket, buffer, len);
+  return 1;
+}
+
+void GUI_DrawRectangle(GUI_Window *w, uint32_t x, uint32_t y, uint32_t sx,
+                       uint32_t sy, uint32_t color) {
+  for (u32 l = y; l < y + sy; l++) {
+    for (u32 s = x; s < x + sx; s++) {
+      if(l*w->sx + s > w->sx*w->sy) {
+        break;
+      }
+      w->bitmap_ptr[l * w->sx + s] = color;
+    }
+  }
 }
 
 GUI_Window *GUI_CreateWindow(uint32_t x, uint32_t y, uint32_t sx, uint32_t sy) {
diff --git a/userland/libgui/libgui.h b/userland/libgui/libgui.h
index 1c3ac95..85e1dda 100644
--- a/userland/libgui/libgui.h
+++ b/userland/libgui/libgui.h
@@ -7,6 +7,10 @@
 #define WINDOWSERVER_EVENT_WINDOW_EXIT 1
 #define WINDOWSERVER_EVENT_WINDOW_RESIZE 2
 
+#define EV_SHIFT(_mode) ((_mode) & (1 << 0))
+#define EV_ALT(_mode) ((_mode) & (1 << 1))
+#define EV_CTRL(_mode) ((_mode) & (1 << 2))
+
 typedef struct {
   int ws_socket;
   int bitmap_fd;
@@ -38,6 +42,13 @@ void GUI_UpdateWindow(GUI_Window *w);
 void GUI_OverwriteFont(GUI_Window *w, uint32_t px, uint32_t py,
                        const uint32_t color);
 void GUI_ClearScreen(GUI_Window *w, uint32_t color);
+void GUI_DrawRectangle(GUI_Window *w, uint32_t x, uint32_t y, uint32_t sx,
+                       uint32_t sy, uint32_t color);
 void GUI_EventLoop(GUI_Window *w, void (*event_handler)(WS_EVENT ev));
-void GUI_Resize(GUI_Window *w, uint32_t sx, uint32_t sy);
+int GUI_BufferResize(GUI_Window *w, uint32_t sx, uint32_t sy);
+int GUI_SendResize(GUI_Window *w, uint32_t sx, uint32_t sy);
+void GUI_DrawLine(GUI_Window *w, uint32_t sx, uint32_t sy, uint32_t dx,
+                  uint32_t dy, uint32_t rgba);
+void GUI_DrawRectangle(GUI_Window *w, uint32_t x, uint32_t y, uint32_t sx,
+                       uint32_t sy, uint32_t color);
 #endif
diff --git a/userland/libppm/ppm.c b/userland/libppm/ppm.c
index 9013e27..ec70a6d 100644
--- a/userland/libppm/ppm.c
+++ b/userland/libppm/ppm.c
@@ -27,13 +27,19 @@ int parse_ppm_header(FILE *fp, struct PPM_IMAGE *img) {
   char c1;
   char c2;
   fscanf(fp, "%c%c\n%d %d\n%d", &c1, &c2, &width, &height, &maxval);
-  if ('P' != c1)
+  if ('P' != c1) {
+    printf("c1: %c\n", c1);
     return 0;
-  if (!isdigit(c2))
+  }
+  if (!isdigit(c2)) {
+    printf("c2: %c\n", c2);
     return 0;
+  }
   img->version = c2 - '0';
-  if (3 != img->version && 6 != img->version)
+  if (3 != img->version && 6 != img->version) {
+    printf("Not handeld version\n");
     return 0;
+  }
   if (maxval > 255) {
     printf("maxval is: %d\n", maxval);
     return 0;
@@ -42,8 +48,7 @@ int parse_ppm_header(FILE *fp, struct PPM_IMAGE *img) {
   img->height = height;
   img->maxval = maxval;
   img->file_location = ftell(fp);
-  printf("width: %d\n", img->width);
-  printf("height: %d\n", img->height);
+  img->file_location++;
   return 1;
 }
 
@@ -59,26 +64,25 @@ int load_ppm6_file(FILE *fp, const struct PPM_IMAGE *img, uint32_t buf_width,
   int cx = 0;
   int cy = 0;
   const int n_pixels = img->width * img->height;
-  printf("malloc\n");
   uint8_t *rgb = malloc(3 * n_pixels);
-  printf("end malloc\n");
 
-  printf("fread");
   const int rc = fread(rgb, 3, n_pixels, fp);
   if (0 == rc)
     return 0;
-  printf("end fread");
 
   uint32_t *p = rgb;
   u32 buf_size = buf_height * buf_width;
   if (1 == modifier) {
-    for (int i = 0; i < rc && i < buf_size; i++, p = ((uint8_t *)p) + 3) {
+    int c = 0;
+    for (int i = 0; i < rc && i < buf_size; i++, c += 3) {
       if (cx > buf_width) {
         i--;
       } else {
-        uint32_t v = *p;
+        u8 red = rgb[c];
+        u8 green = rgb[c + 1];
+        u8 blue = rgb[c + 2];
         buffer[cy * buf_width + cx] =
-            ((v & 0xFF) << 16) | ((v & 0xFF00)) | ((v & 0xFF0000) >> 16);
+            (red << (8 * 2)) | (green << (8 * 1)) | (blue << (8 * 0));
       }
       cx++;
       if (cx == img->width) {
diff --git a/userland/terminal/term.c b/userland/terminal/term.c
index ced3a60..246474f 100644
--- a/userland/terminal/term.c
+++ b/userland/terminal/term.c
@@ -228,12 +228,15 @@ void handle_escape_codes_or_print(char *buffer, int len) {
 }
 
 void terminal_resize(uint32_t sx, uint32_t sy) {
-  GUI_Resize(global_w, sx, sy);
+  assert(GUI_BufferResize(global_w, sx, sy));
   for (int y = 0; y < sy; y += 8) {
-    for (int x = 0; x < sx; x += 8) {
+    int x = 0;
+    for (; x < sx; x += 8) {
       GUI_DrawFont(global_w, x, y, terminal_char_buffer[y / 8][x / 8]);
     }
+    GUI_DrawLine(global_w, x, y, sx, y, 0xFF00FF);
   }
+  assert(GUI_SendResize(global_w, sx, sy));
 }
 
 void run() {
diff --git a/userland/test/linux.sh b/userland/test/linux.sh
index d40d6cc..1cb1668 100755
--- a/userland/test/linux.sh
+++ b/userland/test/linux.sh
@@ -1,4 +1,4 @@
 #!/bin/bash
-gcc -DLINUX test.c -o ./local/a.out
+gcc -DLINUX test.c -g -o ./local/a.out || exit
 cd local
-./a.out
+valgrind ./a.out
diff --git a/userland/test/test.c b/userland/test/test.c
index 33361a5..1bebee7 100644
--- a/userland/test/test.c
+++ b/userland/test/test.c
@@ -1,13 +1,14 @@
 #include <assert.h>
 #include <fcntl.h>
-//#include <json.h>
 #include <ctype.h>
 #include <errno.h>
+#include <limits.h>
 #include <stddef.h>
 #include <stdint.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <tb/sha1.h>
 
 #if 1
 void dbgln(const char *fmt) {
@@ -53,7 +54,6 @@ void isx_test() {
 void malloc_test(void) {
   dbgln("malloc TEST");
   for (int j = 0; j < 100; j++) {
-    //    printf("j : %x\n", j);
     uint8_t *t = malloc(400 + j);
     memset(t, 0x43 + (j % 10), 400 + j);
     uint8_t *p = malloc(900 + j);
@@ -269,6 +269,7 @@ void strncpy_test(void) {
   dbgln("strncpy TEST PASSED");
 }
 
+#ifndef linux
 void strlcpy_test(void) {
   dbgln("strlcpy TEST");
   {
@@ -279,6 +280,7 @@ void strlcpy_test(void) {
   }
   dbgln("strlcpy TEST PASSED");
 }
+#endif
 
 void strcat_test(void) {
   dbgln("strcat TEST");
@@ -429,7 +431,7 @@ void strcasecmp_test(void) {
   {
     assert(0 == strcasecmp("foobar", "FOObar"));
     assert(0 == strcasecmp("foobar", "foobar"));
-    assert(6 == strcasecmp("foobar", "bar"));
+    assert(0 < strcasecmp("foobar", "bar"));
   }
   dbgln("strcasecmp TEST PASSED");
 }
@@ -458,12 +460,14 @@ void strstr_test(void) {
 void strtok_test(void) {
   dbgln("strtok TEST");
   {
-    char *s = "hello,world,goodbye";
+    char s[4096];
+    strcpy(s, "hello,world,goodbye");
     assert(0 == strcmp(strtok(s, ","), "hello"));
     assert(0 == strcmp(strtok(NULL, ","), "world"));
     assert(0 == strcmp(strtok(NULL, ","), "goodbye"));
     assert(NULL == strtok(NULL, ","));
-    char *s2 = "hello,,world,,goodbye,test";
+    char s2[4096];
+    strcpy(s2, "hello,,world,,goodbye,test");
     assert(0 == strcmp(strtok(s2, ",,"), "hello"));
     assert(0 == strcmp(strtok(NULL, ",,"), "world"));
     assert(0 == strcmp(strtok(NULL, ","), "goodbye"));
@@ -660,6 +664,7 @@ void qsort_test(void) {
   dbgln("qsort TEST PASSED");
 }
 
+#ifndef linux
 void basename_test(void) {
   dbgln("basename TEST");
   {
@@ -690,7 +695,9 @@ void basename_test(void) {
   }
   dbgln("basename TEST PASSED");
 }
+#endif
 
+#ifndef linux
 void dirname_test(void) {
   dbgln("dirname TEST");
   {
@@ -710,6 +717,7 @@ void dirname_test(void) {
   }
   dbgln("dirname TEST PASSED");
 }
+#endif
 
 void getline_test(void) {
   dbgln("getline TEST");
@@ -773,6 +781,7 @@ void memchr_test(void) {
   dbgln("memchr TEST PASSED");
 }
 
+#ifndef linux
 void randomfill_test(void) {
   dbgln("randomfill TEST");
   {
@@ -792,6 +801,49 @@ void randomfill_test(void) {
   }
   dbgln("randomfill TEST PASSED");
 }
+#endif
+
+void fs_test() {
+  dbgln("filesystem TEST");
+  {
+    u8 file_digest[SHA1_LEN];
+    u8 direct_digest[SHA1_LEN];
+    SHA1_CTX ctx;
+    char buffer[4096];
+    {
+      SHA1_Init(&ctx);
+      int fd = open("hashfile", O_RDWR | O_CREAT);
+      assert(-1 != fd);
+
+      memset(buffer, 'A', 4096);
+
+      for (int i = 0; i < 2; i++) {
+        write(fd, buffer, 4096);
+      }
+
+      memset(buffer, 0, 4096);
+      lseek(fd, 0, SEEK_SET);
+
+      for (int i = 0; i < 2; i++) {
+        int rc = read(fd, buffer, 4096);
+        assert(4096 == rc);
+        SHA1_Update(&ctx, buffer, 4096);
+      }
+      SHA1_Final(&ctx, file_digest);
+      close(fd);
+    }
+    {
+      SHA1_Init(&ctx);
+      memset(buffer, 'A', 4096);
+      for (int i = 0; i < 2; i++) {
+        SHA1_Update(&ctx, buffer, 4096);
+      }
+      SHA1_Final(&ctx, direct_digest);
+    }
+    assert(0 == memcmp(file_digest, direct_digest, SHA1_LEN));
+  }
+  dbgln("filesystem TEST PASSED");
+}
 
 int main(void) {
   dbgln("START");
@@ -810,7 +862,9 @@ int main(void) {
   strpbrk_test();
   strcpy_test();
   strncpy_test();
+#ifndef linux
   strlcpy_test();
+#endif
   strcat_test();
   strchr_test();
   strrchr_test();
@@ -829,12 +883,17 @@ int main(void) {
   //  fseek_test();
   printf_test();
   qsort_test();
+#ifndef linux
   basename_test();
   dirname_test();
+#endif
   getline_test();
   realpath_test();
   memchr_test();
+  fs_test();
+#ifndef linux
   randomfill_test();
+#endif
   // TODO: Add mkstemp
   return 0;
 }