kern: filedes: Add SYS_open system call

Signed-off-by: Ian Moffett <ian@osmora.org>

1 files changed, 21 insertions, 0 deletions

diff --git a/src/sys/os/os_filedes.c b/src/sys/os/os_filedes.c
index dde7f22..3353a5f 100644
--- a/src/sys/os/os_filedes.c
+++ b/src/sys/os/os_filedes.c
@@ -35,6 +35,7 @@
 #include <sys/namei.h>
 #include <os/filedesc.h>
 #include <os/kalloc.h>
+#include <os/systm.h>
 #include <io/cons/cons.h>
 #include <compat/unix/syscall.h>
 #include <string.h>
@@ -181,3 +182,23 @@ write(int fd, const void *buf, size_t count)
 
     return count;
 }
+
+/*
+ * ARG0: Path
+ * ARG1: Mode
+ */
+scret_t
+sys_open(struct syscall_args *scargs)
+{
+    const char *u_path = SCARG(scargs, const char *, 0);
+    mode_t mode = SCARG(scargs, mode_t, 1);
+    char pathbuf[PATH_MAX];
+    int error;
+
+    error = copyinstr(u_path, pathbuf, sizeof(PATH_MAX));
+    if (error < 0) {
+        return error;
+    }
+
+    return fd_open(pathbuf, mode);
+}