-/*
+/*
* Copyright (C) 2000, 2002 Jeff Dike (jdike@karaya.com)
* Licensed under the GPL
*/
-#include "linux/config.h"
#include "linux/kernel.h"
#include "linux/sched.h"
#include "linux/notifier.h"
#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 "kern_util.h"
#include "kern.h"
-#include "mprot.h"
#include "mem_user.h"
#include "mem.h"
#include "umid.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"
-#define DEFAULT_COMMAND_LINE "root=6200"
+/* 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,
static int show_cpuinfo(struct seq_file *m, void *v)
{
- int index;
+ int index = 0;
- index = (struct cpuinfo_um *)v - cpu_data;
#ifdef CONFIG_SMP
+ index = (struct cpuinfo_um *) v - cpu_data;
if (!cpu_online(index))
return 0;
#endif
- seq_printf(m, "bogomips\t: %lu.%02lu\n",
+ seq_printf(m, "processor\t: %d\n", index);
+ seq_printf(m, "vendor_id\t: User Mode Linux\n");
+ seq_printf(m, "model name\t: UML\n");
+ seq_printf(m, "mode\t\t: %s\n", CHOOSE_MODE("tt", "skas"));
+ seq_printf(m, "host\t\t: %s\n", host_info);
+ seq_printf(m, "bogomips\t: %lu.%02lu\n\n",
loops_per_jiffy/(500000/HZ),
(loops_per_jiffy/(5000/HZ)) % 100);
- seq_printf(m, "host\t\t: %s\n", host_info);
return(0);
}
{
}
-struct seq_operations cpuinfo_op = {
+const struct seq_operations cpuinfo_op = {
.start = c_start,
.next = c_next,
.stop = c_stop,
.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);
+ "(%s) ", umid);
ptr = &argv1_begin[strlen(argv1_begin)];
}
else ptr = argv1_begin;
- snprintf(ptr, (argv1_end - ptr) * sizeof(*ptr), " [%s]", cmd);
+ snprintf(ptr, (argv1_end - ptr) * sizeof(*ptr), "[%s]", cmd);
memset(argv1_begin + strlen(argv1_begin), '\0',
argv1_end - argv1_begin - strlen(argv1_begin));
#endif
static int __init uml_version_setup(char *line, int *add)
{
- printf("%s\n", system_utsname.release);
+ printf("%s\n", init_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)
{
if (!sscanf(line, "%d", &ncpus)) {
- printk("Couldn't parse [%s]\n", line);
+ printf("Couldn't parse [%s]\n", line);
return -1;
}
);
#endif
-int force_tt = 0;
+static int force_tt = 0;
#if defined(CONFIG_MODE_TT) && defined(CONFIG_MODE_SKAS)
#define DEFAULT_TT 0
static int __init mode_tt_setup(char *line, int *add)
{
- printk("CONFIG_MODE_TT disabled - 'mode=tt' ignored\n");
+ printf("CONFIG_MODE_TT disabled - 'mode=tt' ignored\n");
return(0);
}
static int __init mode_tt_setup(char *line, int *add)
{
- printk("CONFIG_MODE_SKAS disabled - 'mode=tt' redundant\n");
+ printf("CONFIG_MODE_SKAS disabled - 'mode=tt' redundant\n");
return(0);
}
-#else
-
-#error Either CONFIG_MODE_TT or CONFIG_MODE_SKAS must be enabled
-
#endif
#endif
#endif
{
const char **p;
- printf(usage_string, system_utsname.release);
+ printf(usage_string, init_utsname()->release);
p = &__uml_help_start;
while (p < &__uml_help_end) {
printf("%s", *p);
p++;
}
exit(0);
+
+ return 0;
}
__uml_setup("--help", Usage,
/* Set during early boot */
unsigned long brk_start;
-static struct vm_reserved kernel_vm_reserved;
+unsigned long end_iomem;
+EXPORT_SYMBOL(end_iomem);
#define MIN_VMALLOC (32 * 1024 * 1024)
+extern char __binary_start;
+
int linux_main(int argc, char **argv)
{
- unsigned long avail;
+ unsigned long avail, diff;
unsigned long virtmem_size, max_physmem;
- unsigned int i, add, err;
+ 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();
- uml_start = CHOOSE_MODE_PROC(set_task_sizes_tt, set_task_sizes_skas, 0,
- &host_task_size, &task_size);
+#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 = (unsigned long) &__binary_start;
+ host_task_size = CHOOSE_MODE_PROC(set_task_sizes_tt,
+ set_task_sizes_skas, &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
+ so they actually get what they asked for. This should
+ add zero for non-exec shield users */
+
+ diff = UML_ROUND_UP(brk_start) - UML_ROUND_UP(&_end);
+ if(diff > 1024 * 1024){
+ printf("Adding %ld bytes to physical memory to account for "
+ "exec-shield gap\n", diff);
+ physmem_size += UML_ROUND_UP(brk_start) - UML_ROUND_UP(&_end);
+ }
- uml_physmem = uml_start;
+ uml_physmem = uml_start & PAGE_MASK;
/* Reserve up to 4M after the current brk */
uml_reserved = ROUND_4M(brk_start) + (1 << 22);
- setup_machinename(system_utsname.machine);
+ setup_machinename(init_utsname()->machine);
-#ifdef CONFIG_MODE_TT
+#ifdef CONFIG_CMDLINE_ON_HOST
argv1_begin = argv[1];
argv1_end = &argv[1][strlen(argv[1])];
#endif
- set_usable_vm(uml_physmem, get_kmem_end());
-
highmem = 0;
- max_physmem = get_kmem_end() - uml_physmem - MIN_VMALLOC;
- if(physmem_size > max_physmem){
- highmem = physmem_size - max_physmem;
+ iomem_size = (iomem_size + PAGE_SIZE - 1) & PAGE_MASK;
+ max_physmem = get_kmem_end() - uml_physmem - iomem_size - MIN_VMALLOC;
+
+ /* Zones have to begin on a 1 << MAX_ORDER page boundary,
+ * so this makes sure that's true for highmem
+ */
+ max_physmem &= ~((1 << (PAGE_SHIFT + MAX_ORDER)) - 1);
+ if(physmem_size + iomem_size > max_physmem){
+ highmem = physmem_size + iomem_size - max_physmem;
physmem_size -= highmem;
#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
}
high_physmem = uml_physmem + physmem_size;
- high_memory = (void *) high_physmem;
+ end_iomem = high_physmem + iomem_size;
+ high_memory = (void *) end_iomem;
start_vm = VMALLOC_START;
- setup_physmem(uml_physmem, uml_reserved, physmem_size);
+ setup_physmem(uml_physmem, uml_reserved, physmem_size, highmem);
+ if(init_maps(physmem_size, iomem_size, highmem)){
+ printf("Failed to allocate mem_map for %Lu bytes of physical "
+ "memory and %Lu bytes of highmem\n", physmem_size,
+ highmem);
+ exit(1);
+ }
+
virtmem_size = physmem_size;
avail = get_kmem_end() - start_vm;
if(physmem_size > avail) virtmem_size = avail;
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);
- err = reserve_vm(high_physmem, end_vm, &kernel_vm_reserved);
- if(err){
- printf("Failed to reserve VM area for kernel VM\n");
- exit(1);
- }
-
uml_postsetup();
- init_task.thread.kernel_stack = (unsigned long) &init_thread_info +
- 2 * PAGE_SIZE;
-
task_protections((unsigned long) &init_thread_info);
+ os_flush_stdout();
return(CHOOSE_MODE(start_uml_tt(), start_uml_skas()));
}
+extern int uml_exitcode;
+
static int panic_exit(struct notifier_block *self, unsigned long unused1,
void *unused2)
{
-#ifdef CONFIG_MAGIC_SYSRQ
- handle_sysrq('p', ¤t->thread.regs, NULL, NULL);
-#endif
+ bust_spinlocks(1);
+ show_regs(&(current->thread.regs));
+ bust_spinlocks(0);
+ uml_exitcode = 1;
machine_halt();
return(0);
}
void __init setup_arch(char **cmdline_p)
{
- notifier_chain_register(&panic_notifier_list, &panic_exit_notifier);
+ atomic_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();
+ os_check_bugs();
}
-/*
- * 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:
- */
+void apply_alternatives(struct alt_instr *start, struct alt_instr *end)
+{
+}
+
+#ifdef CONFIG_SMP
+void alternatives_smp_module_add(struct module *mod, char *name,
+ void *locks, void *locks_end,
+ void *text, void *text_end)
+{
+}
+
+void alternatives_smp_module_del(struct module *mod)
+{
+}
+#endif
git://git.onelab.eu / linux-2.6.git / blobdiff