-/*
+/*
* Copyright (C) 2000, 2002 Jeff Dike (jdike@karaya.com)
* Licensed under the GPL
*/
#include "linux/sysrq.h"
#include "linux/seq_file.h"
#include "linux/delay.h"
+#include "linux/module.h"
#include "asm/page.h"
#include "asm/pgtable.h"
#include "asm/ptrace.h"
#include "asm/elf.h"
#include "asm/user.h"
+#include "asm/setup.h"
#include "ubd_user.h"
#include "asm/current.h"
#include "user_util.h"
#include "choose-mode.h"
#include "mode_kern.h"
#include "mode.h"
+#ifdef UML_CONFIG_MODE_SKAS
+#include "skas.h"
+#endif
#define DEFAULT_COMMAND_LINE "root=98:0"
+/* Changed in linux_main and setup_arch, which run before SMP is started */
+static char command_line[COMMAND_LINE_SIZE] = { 0 };
+
+static void add_arg(char *arg)
+{
+ if (strlen(command_line) + strlen(arg) + 1 > COMMAND_LINE_SIZE) {
+ printf("add_arg: Too many command line arguments!\n");
+ exit(1);
+ }
+ if(strlen(command_line) > 0)
+ strcat(command_line, " ");
+ strcat(command_line, arg);
+}
+
struct cpuinfo_um boot_cpu_data = {
.loops_per_jiffy = 0,
.ipi_pipe = { -1, -1 }
};
-/* Placeholder to make UML link until the vsyscall stuff is actually
- * implemented
- */
-void *__kernel_vsyscall;
-
unsigned long thread_saved_pc(struct task_struct *task)
{
return(os_process_pc(CHOOSE_MODE_PROC(thread_pid_tt, thread_pid_skas,
.show = show_cpuinfo,
};
-pte_t * __bad_pagetable(void)
-{
- panic("Someone should implement __bad_pagetable");
- return(NULL);
-}
-
/* Set in linux_main */
unsigned long host_task_size;
unsigned long task_size;
unsigned long end_vm;
int ncpus = 1;
-#ifdef CONFIG_MODE_TT
+#ifdef CONFIG_CMDLINE_ON_HOST
/* Pointer set in linux_main, the array itself is private to each thread,
* and changed at address space creation time so this poses no concurrency
* problems.
/* Set in early boot */
static int have_root __initdata = 0;
-long physmem_size = 32 * 1024 * 1024;
+long long physmem_size = 32 * 1024 * 1024;
void set_cmdline(char *cmd)
{
-#ifdef CONFIG_MODE_TT
+#ifdef CONFIG_CMDLINE_ON_HOST
char *umid, *ptr;
if(CHOOSE_MODE(honeypot, 0)) return;
- umid = get_umid(1);
- if(umid != NULL){
+ umid = get_umid();
+ if(*umid != '\0'){
snprintf(argv1_begin,
(argv1_end - argv1_begin) * sizeof(*ptr),
"(%s) ", umid);
{
printf("%s\n", system_utsname.release);
exit(0);
+
+ return 0;
}
__uml_setup("--version", uml_version_setup,
" root=/dev/ubd5\n\n"
);
+#ifndef CONFIG_MODE_TT
+
+static int __init no_skas_debug_setup(char *line, int *add)
+{
+ printf("'debug' is not necessary to gdb UML in skas mode - run \n");
+ printf("'gdb linux' and disable CONFIG_CMDLINE_ON_HOST if gdb \n");
+ printf("doesn't work as expected\n");
+
+ return 0;
+}
+
+__uml_setup("debug", no_skas_debug_setup,
+"debug\n"
+" this flag is not needed to run gdb on UML in skas mode\n\n"
+);
+
+#endif
+
#ifdef CONFIG_SMP
static int __init uml_ncpus_setup(char *line, int *add)
{
);
#endif
-int force_tt = 0;
+static int force_tt = 0;
#if defined(CONFIG_MODE_TT) && defined(CONFIG_MODE_SKAS)
#define DEFAULT_TT 0
return(0);
}
-#else
-
-#error Either CONFIG_MODE_TT or CONFIG_MODE_SKAS must be enabled
-
#endif
#endif
#endif
p++;
}
exit(0);
+
+ return 0;
}
__uml_setup("--help", Usage,
/* Set during early boot */
unsigned long brk_start;
unsigned long end_iomem;
+EXPORT_SYMBOL(end_iomem);
#define MIN_VMALLOC (32 * 1024 * 1024)
unsigned long avail, diff;
unsigned long virtmem_size, max_physmem;
unsigned int i, add;
+ char * mode;
for (i = 1; i < argc; i++){
if((i == 1) && (argv[i][0] == ' ')) continue;
add = 1;
uml_checksetup(argv[i], &add);
- if(add) add_arg(saved_command_line, argv[i]);
+ if (add)
+ add_arg(argv[i]);
}
- if(have_root == 0) add_arg(saved_command_line, DEFAULT_COMMAND_LINE);
+ if(have_root == 0)
+ add_arg(DEFAULT_COMMAND_LINE);
+ os_early_checks();
+ if (force_tt)
+ clear_can_do_skas();
mode_tt = force_tt ? 1 : !can_do_skas();
+#ifndef CONFIG_MODE_TT
+ if (mode_tt) {
+ /*Since CONFIG_MODE_TT is #undef'ed, force_tt cannot be 1. So,
+ * can_do_skas() returned 0, and the message is correct. */
+ printf("Support for TT mode is disabled, and no SKAS support is present on the host.\n");
+ exit(1);
+ }
+#endif
+
+#ifndef CONFIG_MODE_SKAS
+ mode = "TT";
+#else
+ /* Show to the user the result of selection */
+ if (mode_tt)
+ mode = "TT";
+ else if (proc_mm && ptrace_faultinfo)
+ mode = "SKAS3";
+ else
+ mode = "SKAS0";
+#endif
+
+ printf("UML running in %s mode\n", mode);
+
uml_start = CHOOSE_MODE_PROC(set_task_sizes_tt, set_task_sizes_skas, 0,
&host_task_size, &task_size);
+ /*
+ * Setting up handlers to 'sig_info' struct
+ */
+ os_fill_handlinfo(handlinfo_kern);
+
brk_start = (unsigned long) sbrk(0);
CHOOSE_MODE_PROC(before_mem_tt, before_mem_skas, brk_start);
/* Increase physical memory size for exec-shield users
setup_machinename(system_utsname.machine);
-#ifdef CONFIG_MODE_TT
+#ifdef CONFIG_CMDLINE_ON_HOST
argv1_begin = argv[1];
argv1_end = &argv[1][strlen(argv[1])];
#endif
#ifndef CONFIG_HIGHMEM
highmem = 0;
printf("CONFIG_HIGHMEM not enabled - physical memory shrunk "
- "to %ld bytes\n", physmem_size);
+ "to %lu bytes\n", physmem_size);
#endif
}
setup_physmem(uml_physmem, uml_reserved, physmem_size, highmem);
if(init_maps(physmem_size, iomem_size, highmem)){
- printf("Failed to allocate mem_map for %ld bytes of physical "
- "memory and %ld bytes of highmem\n", physmem_size,
+ printf("Failed to allocate mem_map for %lu bytes of physical "
+ "memory and %lu bytes of highmem\n", physmem_size,
highmem);
exit(1);
}
end_vm = start_vm + virtmem_size;
if(virtmem_size < physmem_size)
- printf("Kernel virtual memory size shrunk to %ld bytes\n",
+ printf("Kernel virtual memory size shrunk to %lu bytes\n",
virtmem_size);
uml_postsetup();
static int panic_exit(struct notifier_block *self, unsigned long unused1,
void *unused2)
{
-#ifdef CONFIG_MAGIC_SYSRQ
- handle_sysrq('p', ¤t->thread.regs, NULL);
-#endif
+ bust_spinlocks(1);
+ show_regs(&(current->thread.regs));
+ bust_spinlocks(0);
uml_exitcode = 1;
machine_halt();
return(0);
{
notifier_chain_register(&panic_notifier_list, &panic_exit_notifier);
paging_init();
- strcpy(command_line, saved_command_line);
+ strlcpy(saved_command_line, command_line, COMMAND_LINE_SIZE);
*cmdline_p = command_line;
setup_hostinfo();
}
void __init check_bugs(void)
{
arch_check_bugs();
- check_ptrace();
check_sigio();
check_devanon();
}
void apply_alternatives(void *start, void *end)
{
}
-
-/*
- * 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:
- */