Clean out for expt

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

1 files changed, 0 insertions, 134 deletions

diff --git a/sys/kern/kern_subr.c b/sys/kern/kern_subr.c
deleted file mode 100644
index d9b1b3a..0000000
--- a/sys/kern/kern_subr.c
+++ /dev/null
@@ -1,134 +0,0 @@
-/*
- * Copyright (c) 2023-2024 Ian Marco Moffett and the Osmora Team.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice,
- *    this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. Neither the name of Hyra nor the names of its
- *    contributors may be used to endorse or promote products derived from
- *    this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <sys/system.h>
-#include <sys/types.h>
-#include <sys/errno.h>
-#include <sys/sched.h>
-#include <vm/vm.h>
-#include <string.h>
-
-/*
- * Check if a user address is valid.
- *
- * @uaddr: User address to check.
- *
- * Returns true if valid, otherwise false.
- */
-static bool
-check_uaddr(uintptr_t uaddr)
-{
-    struct proc *td = this_td();
-    struct vm_range exec_range = td->addr_range[ADDR_RANGE_EXEC];
-    struct vm_range stack_range = td->addr_range[ADDR_RANGE_STACK];
-
-    if (uaddr >= exec_range.start && uaddr <= exec_range.end) {
-        return true;
-    }
-    if (uaddr >= stack_range.start && uaddr <= stack_range.end) {
-        return true;
-    }
-
-    return false;
-}
-
-/*
- * Copy from userspace to the kernel.
- *
- * @uaddr: Userspace address.
- * @kaddr: Kernelspace address.
- * @len: Length of data.
- */
-int
-copyin(uintptr_t uaddr, void *kaddr, size_t len)
-{
-    if (!check_uaddr(uaddr) || !check_uaddr(uaddr + len)) {
-        return -EFAULT;
-    }
-
-    memcpy(kaddr, (void *)uaddr, len);
-    return 0;
-}
-
-/*
- * Copy from the kernel to userspace.
- *
- * @kaddr: Kernelspace address.
- * @uaddr: Userspace address.
- * @len: Length of data.
- */
-int
-copyout(const void *kaddr, uintptr_t uaddr, size_t len)
-{
-    if (!check_uaddr(uaddr) || !check_uaddr(uaddr + len)) {
-        return -EFAULT;
-    }
-
-    memcpy((void *)uaddr, kaddr, len);
-    return 0;
-}
-
-/*
- * Copy in a string from userspace
- *
- * Unlike the typical copyin(), this routine will
- * copy until we've hit NUL ('\0')
- *
- * @uaddr: Userspace address.
- * @kaddr: Kernelspace address.
- * @len: Length of string.
- *
- * XXX: Please note that if `len' is less than the actual
- *      string length, the returned value will not be
- *      NUL terminated.
- */
-int
-copyinstr(uintptr_t uaddr, char *kaddr, size_t len)
-{
-    char *dest = (char *)kaddr;
-    char *src = (char *)uaddr;
-
-    if (!check_uaddr(uaddr)) {
-        return -EFAULT;
-    }
-
-    for (size_t i = 0; i < len; ++i) {
-        if (!check_uaddr(uaddr + i)) {
-            return -EFAULT;
-        }
-
-        dest[i] = src[i];
-
-        if (src[i] == '\0') {
-            break;
-        }
-    }
-
-    return 0;
-}