Add file and directory creation, mkdir

src/user/app/cat/cat.c

@@ -1,3 +1,4 @@
+#include "src/lib/syscall.h"
 #include "src/lib/util.h"
 #include "src/user/syscall.h"
 
@@ -7,7 +8,7 @@
 #define PRINT_D(s) write(1, s, string_length(s));
 
 exit_code_t cat(const char *path) {
-  uint64_t fd = open(path);
+  uint64_t fd = open(path, OPEN_FILE);
 
   if (fd == (uint64_t)-1) {
     PRINT_S("cat: path does not exist\n");

src/user/app/cp/cp.c

@@ -1,3 +1,4 @@
+#include "src/lib/syscall.h"
 #include "src/lib/util.h"
 #include "src/user/syscall.h"
 
@@ -12,15 +13,15 @@ exit_code_t main(uint64_t argc, const char **argv) {
     return EXIT_CODE_GENERAL_FAILURE;
   }
 
-  uint64_t source = open(argv[1]);
+  uint64_t source = open(argv[1], OPEN_FILE);
   if (source == (uint64_t)-1) {
     PRINT_S("cp: source does not exist\n");
     return EXIT_CODE_GENERAL_FAILURE;
   }
 
-  uint64_t target = open(argv[2]);
+  uint64_t target = open(argv[2], OPEN_FILE | OPEN_CREATE);
   if (target == (uint64_t)-1) {
-    PRINT_S("cp: target does not exist\n");
+    PRINT_S("cp: target path does not exist\n");
     close(source);
     return EXIT_CODE_GENERAL_FAILURE;
   }

src/user/app/ls/ls.c

@@ -1,4 +1,5 @@
 #include "src/lib/string.h"
+#include "src/lib/syscall.h"
 #include "src/lib/util.h"
 #include "src/user/syscall.h"
 
@@ -6,7 +7,7 @@
 #define PRINT_D(s) write(1, s, string_length(s));
 
 exit_code_t ls(const char *path) {
-  uint64_t fd = open(path);
+  uint64_t fd = open(path, OPEN_DIRECTORY);
 
   if (fd == (uint64_t)-1) {
     PRINT_S("ls: path does not exist\n");

src/user/app/mkdir/mkdir.c

@@ -0,0 +1,28 @@
+#include "src/lib/syscall.h"
+#include "src/lib/util.h"
+#include "src/user/syscall.h"
+#include <stdint.h>
+
+#define BLOCK_SIZE 65536
+
+#define PRINT_S(s) write(1, s, sizeof(s) - 1);
+#define PRINT_D(s) write(1, s, string_length(s));
+
+exit_code_t main(uint64_t argc, const char **argv) {
+  if (argc < 2) {
+    PRINT_S("mkdir: requires target(s)\n");
+    return EXIT_CODE_GENERAL_FAILURE;
+  }
+
+  for (uint64_t i = 1; i < argc; i++) {
+    uint64_t fd = open(argv[i], OPEN_DIRECTORY | OPEN_CREATE | OPEN_EXCLUSIVE);
+    if (fd == (uint64_t)-1) {
+      PRINT_S("mkdir: could not create directory\n");
+      return EXIT_CODE_GENERAL_FAILURE;
+    } else {
+      close(fd);
+    }
+  }
+
+  return EXIT_CODE_OK;
+}