Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/arch/um/sys-x86_64/syscalls.c b/arch/um/sys-x86_64/syscalls.c
new file mode 100644
index 0000000..68205a0
--- /dev/null
+++ b/arch/um/sys-x86_64/syscalls.c
@@ -0,0 +1,186 @@
+/*
+ * Copyright 2003 PathScale, Inc.
+ *
+ * Licensed under the GPL
+ */
+
+#include "linux/linkage.h"
+#include "linux/slab.h"
+#include "linux/shm.h"
+#include "asm/uaccess.h"
+#define __FRAME_OFFSETS
+#include "asm/ptrace.h"
+#include "asm/unistd.h"
+#include "asm/prctl.h" /* XXX This should get the constants from libc */
+#include "choose-mode.h"
+
+asmlinkage long wrap_sys_shmat(int shmid, char __user *shmaddr, int shmflg)
+{
+ unsigned long raddr;
+
+ return do_shmat(shmid, shmaddr, shmflg, &raddr) ?: (long) raddr;
+}
+
+#ifdef CONFIG_MODE_TT
+extern int modify_ldt(int func, void *ptr, unsigned long bytecount);
+
+long sys_modify_ldt_tt(int func, void *ptr, unsigned long bytecount)
+{
+ /* XXX This should check VERIFY_WRITE depending on func, check this
+ * in i386 as well.
+ */
+ if (!access_ok(VERIFY_READ, ptr, bytecount))
+ return -EFAULT;
+ return(modify_ldt(func, ptr, bytecount));
+}
+#endif
+
+#ifdef CONFIG_MODE_SKAS
+extern int userspace_pid[];
+
+long sys_modify_ldt_skas(int func, void *ptr, unsigned long bytecount)
+{
+ struct ptrace_ldt ldt;
+ void *buf;
+ int res, n;
+
+ buf = kmalloc(bytecount, GFP_KERNEL);
+ if(buf == NULL)
+ return(-ENOMEM);
+
+ res = 0;
+
+ switch(func){
+ case 1:
+ case 0x11:
+ res = copy_from_user(buf, ptr, bytecount);
+ break;
+ }
+
+ if(res != 0){
+ res = -EFAULT;
+ goto out;
+ }
+
+ ldt = ((struct ptrace_ldt) { .func = func,
+ .ptr = buf,
+ .bytecount = bytecount });
+#warning Need to look up userspace_pid by cpu
+ res = ptrace(PTRACE_LDT, userspace_pid[0], 0, (unsigned long) &ldt);
+ if(res < 0)
+ goto out;
+
+ switch(func){
+ case 0:
+ case 2:
+ n = res;
+ res = copy_to_user(ptr, buf, n);
+ if(res != 0)
+ res = -EFAULT;
+ else
+ res = n;
+ break;
+ }
+
+ out:
+ kfree(buf);
+ return(res);
+}
+#endif
+
+long sys_modify_ldt(int func, void *ptr, unsigned long bytecount)
+{
+ return(CHOOSE_MODE_PROC(sys_modify_ldt_tt, sys_modify_ldt_skas, func,
+ ptr, bytecount));
+}
+
+#ifdef CONFIG_MODE_TT
+extern long arch_prctl(int code, unsigned long addr);
+
+static long arch_prctl_tt(int code, unsigned long addr)
+{
+ unsigned long tmp;
+ long ret;
+
+ switch(code){
+ case ARCH_SET_GS:
+ case ARCH_SET_FS:
+ ret = arch_prctl(code, addr);
+ break;
+ case ARCH_GET_FS:
+ case ARCH_GET_GS:
+ ret = arch_prctl(code, (unsigned long) &tmp);
+ if(!ret)
+ ret = put_user(tmp, &addr);
+ break;
+ default:
+ ret = -EINVAL;
+ break;
+ }
+
+ return(ret);
+}
+#endif
+
+#ifdef CONFIG_MODE_SKAS
+
+static long arch_prctl_skas(int code, unsigned long addr)
+{
+ long ret = 0;
+
+ switch(code){
+ case ARCH_SET_GS:
+ current->thread.regs.regs.skas.regs[GS_BASE / sizeof(unsigned long)] = addr;
+ break;
+ case ARCH_SET_FS:
+ current->thread.regs.regs.skas.regs[FS_BASE / sizeof(unsigned long)] = addr;
+ break;
+ case ARCH_GET_FS:
+ ret = put_user(current->thread.regs.regs.skas.regs[GS / sizeof(unsigned long)], &addr);
+ break;
+ case ARCH_GET_GS:
+ ret = put_user(current->thread.regs.regs.skas.regs[FS / sizeof(unsigned \
+long)], &addr);
+ break;
+ default:
+ ret = -EINVAL;
+ break;
+ }
+
+ return(ret);
+}
+#endif
+
+long sys_arch_prctl(int code, unsigned long addr)
+{
+ return(CHOOSE_MODE_PROC(arch_prctl_tt, arch_prctl_skas, code, addr));
+}
+
+long sys_clone(unsigned long clone_flags, unsigned long newsp,
+ void __user *parent_tid, void __user *child_tid)
+{
+ long ret;
+
+ /* XXX: normal arch do here this pass, and also pass the regs to
+ * do_fork, instead of NULL. Currently the arch-independent code
+ * ignores these values, while the UML code (actually it's
+ * copy_thread) does the right thing. But this should change,
+ probably. */
+ /*if (!newsp)
+ newsp = UPT_SP(current->thread.regs);*/
+ current->thread.forking = 1;
+ ret = do_fork(clone_flags, newsp, NULL, 0, parent_tid, child_tid);
+ current->thread.forking = 0;
+ 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:
+ */