[PATCH] uml: system call path cleanup
This merges two sets of files which had no business being split apart in the
first place.
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/arch/um/kernel/skas/syscall.c b/arch/um/kernel/skas/syscall.c
new file mode 100644
index 0000000..51fb940
--- /dev/null
+++ b/arch/um/kernel/skas/syscall.c
@@ -0,0 +1,50 @@
+/*
+ * Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
+ * Licensed under the GPL
+ */
+
+#include "linux/sys.h"
+#include "linux/ptrace.h"
+#include "asm/errno.h"
+#include "asm/unistd.h"
+#include "asm/ptrace.h"
+#include "asm/current.h"
+#include "sysdep/syscalls.h"
+#include "kern_util.h"
+#include "syscall.h"
+
+void handle_syscall(union uml_pt_regs *r)
+{
+ struct pt_regs *regs = container_of(r, struct pt_regs, regs);
+ long result;
+ int syscall;
+#ifdef UML_CONFIG_SYSCALL_DEBUG
+ int index;
+
+ index = record_syscall_start(UPT_SYSCALL_NR(r));
+#endif
+ syscall_trace(r, 0);
+
+ current->thread.nsyscalls++;
+ nsyscalls++;
+
+ /* This should go in the declaration of syscall, but when I do that,
+ * strace -f -c bash -c 'ls ; ls' breaks, sometimes not tracing
+ * children at all, sometimes hanging when bash doesn't see the first
+ * ls exit.
+ * The assembly looks functionally the same to me. This is
+ * gcc version 4.0.1 20050727 (Red Hat 4.0.1-5)
+ * in case it's a compiler bug.
+ */
+ syscall = UPT_SYSCALL_NR(r);
+ if((syscall >= NR_syscalls) || (syscall < 0))
+ result = -ENOSYS;
+ else result = EXECUTE_SYSCALL(syscall, regs);
+
+ REGS_SET_SYSCALL_RETURN(r->skas.regs, result);
+
+ syscall_trace(r, 1);
+#ifdef UML_CONFIG_SYSCALL_DEBUG
+ record_syscall_end(index, result);
+#endif
+}