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Diffstat (limited to 'arch/um/kernel/tt/uaccess_user.c')
-rw-r--r--arch/um/kernel/tt/uaccess_user.c105
1 files changed, 0 insertions, 105 deletions
diff --git a/arch/um/kernel/tt/uaccess_user.c b/arch/um/kernel/tt/uaccess_user.c
deleted file mode 100644
index 0e5c82c5e5b7..000000000000
--- a/arch/um/kernel/tt/uaccess_user.c
+++ /dev/null
@@ -1,105 +0,0 @@
-/*
- * Copyright (C) 2001 Chris Emerson (cemerson@chiark.greenend.org.uk)
- * Copyright (C) 2001 Jeff Dike (jdike@karaya.com)
- * Licensed under the GPL
- */
-
-#include <string.h>
-#include "uml_uaccess.h"
-#include "task.h"
-#include "kern_util.h"
-#include "os.h"
-#include "longjmp.h"
-
-int __do_copy_from_user(void *to, const void *from, int n,
- void **fault_addr, void **fault_catcher)
-{
- struct tt_regs save = TASK_REGS(get_current())->tt;
- unsigned long fault;
- int faulted;
-
- fault = __do_user_copy(to, from, n, fault_addr, fault_catcher,
- __do_copy, &faulted);
- TASK_REGS(get_current())->tt = save;
-
- if(!faulted)
- return 0;
- else if (fault)
- return n - (fault - (unsigned long) from);
- else
- /* In case of a general protection fault, we don't have the
- * fault address, so NULL is used instead. Pretend we didn't
- * copy anything. */
- return n;
-}
-
-static void __do_strncpy(void *dst, const void *src, int count)
-{
- strncpy(dst, src, count);
-}
-
-int __do_strncpy_from_user(char *dst, const char *src, unsigned long count,
- void **fault_addr, void **fault_catcher)
-{
- struct tt_regs save = TASK_REGS(get_current())->tt;
- unsigned long fault;
- int faulted;
-
- fault = __do_user_copy(dst, src, count, fault_addr, fault_catcher,
- __do_strncpy, &faulted);
- TASK_REGS(get_current())->tt = save;
-
- if(!faulted) return(strlen(dst));
- else return(-1);
-}
-
-static void __do_clear(void *to, const void *from, int n)
-{
- memset(to, 0, n);
-}
-
-int __do_clear_user(void *mem, unsigned long len,
- void **fault_addr, void **fault_catcher)
-{
- struct tt_regs save = TASK_REGS(get_current())->tt;
- unsigned long fault;
- int faulted;
-
- fault = __do_user_copy(mem, NULL, len, fault_addr, fault_catcher,
- __do_clear, &faulted);
- TASK_REGS(get_current())->tt = save;
-
- if(!faulted) return(0);
- else return(len - (fault - (unsigned long) mem));
-}
-
-int __do_strnlen_user(const char *str, unsigned long n,
- void **fault_addr, void **fault_catcher)
-{
- struct tt_regs save = TASK_REGS(get_current())->tt;
- int ret;
- unsigned long *faddrp = (unsigned long *)fault_addr;
- jmp_buf jbuf;
-
- *fault_catcher = &jbuf;
- if(UML_SETJMP(&jbuf) == 0)
- ret = strlen(str) + 1;
- else ret = *faddrp - (unsigned long) str;
-
- *fault_addr = NULL;
- *fault_catcher = NULL;
-
- TASK_REGS(get_current())->tt = save;
- return ret;
-}
-
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only. This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-file-style: "linux"
- * End:
- */