stuff

TTOS/src/fs/fs.c

@@ -0,0 +1,57 @@
+#include <unistd.h>
+#include <sys/syscall.h>
+
+#include "errorCode.h"
+
+errorCode_t fs_open(const char* path, int flags, int* fd) {
+    if(fd == 0) {
+        return EBADPARM;
+    }
+    int rc = syscall(SYS_open, path, flags);
+    if(rc == -1) {
+        return EFILESYS;
+    }
+    *fd = rc;
+    return SUCCESS;
+}
+
+errorCode_t fs_write(int fd, const void *buf, int count, int* bytes_written) {
+    int rc = syscall(SYS_write, fd, buf, count);
+    if(rc == -1) {
+        return EFILESYS;
+    }
+    if(bytes_written != 0) {
+        *bytes_written = rc;
+    }
+    return SUCCESS;
+}
+
+errorCode_t fs_read(int fd, void *buf, int count, int* bytes_read) {
+    int rc = syscall(SYS_read, fd, buf, count);
+    if(rc == -1) {
+        return EFILESYS;
+    }
+    if(bytes_read != 0) {
+        *bytes_read = rc;
+    }
+    return SUCCESS;
+}
+
+errorCode_t fs_seek(int fd, int offset, int whence, int* distance) {
+    int rc = syscall(SYS_lseek, fd, offset, whence);
+    if(rc == -1) {
+        return EFILESYS;
+    }
+    if(distance != 0) {
+        *distance = rc;
+    }
+    return SUCCESS;
+}
+
+errorCode_t fs_close(int fd) {
+    int rc = syscall(SYS_close, fd);
+    if(rc == -1) {
+        return EFILESYS;
+    }
+    return SUCCESS;
+}