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Diffstat (limited to 'arch/um/os-Linux/main.c')
-rw-r--r--arch/um/os-Linux/main.c80
1 files changed, 41 insertions, 39 deletions
diff --git a/arch/um/os-Linux/main.c b/arch/um/os-Linux/main.c
index aeeecc63473..1518f7a45a2 100644
--- a/arch/um/os-Linux/main.c
+++ b/arch/um/os-Linux/main.c
@@ -1,27 +1,21 @@
/*
- * Copyright (C) 2000, 2001 Jeff Dike (jdike@karaya.com)
+ * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
* Licensed under the GPL
*/
-#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
-#include <string.h>
-#include <signal.h>
+#include <unistd.h>
#include <errno.h>
+#include <signal.h>
+#include <string.h>
#include <sys/resource.h>
-#include <sys/mman.h>
-#include <sys/user.h>
-#include "kern_util.h"
#include "as-layout.h"
-#include "mem_user.h"
-#include "irq_user.h"
-#include "user.h"
#include "init.h"
-#include "uml-config.h"
+#include "kern_constants.h"
+#include "kern_util.h"
#include "os.h"
#include "um_malloc.h"
-#include "kern_constants.h"
#define PGD_BOUND (4 * 1024 * 1024)
#define STACKSIZE (8 * 1024 * 1024)
@@ -31,13 +25,13 @@ static void set_stklim(void)
{
struct rlimit lim;
- if(getrlimit(RLIMIT_STACK, &lim) < 0){
+ if (getrlimit(RLIMIT_STACK, &lim) < 0) {
perror("getrlimit");
exit(1);
}
- if((lim.rlim_cur == RLIM_INFINITY) || (lim.rlim_cur > STACKSIZE)){
+ if ((lim.rlim_cur == RLIM_INFINITY) || (lim.rlim_cur > STACKSIZE)) {
lim.rlim_cur = STACKSIZE;
- if(setrlimit(RLIMIT_STACK, &lim) < 0){
+ if (setrlimit(RLIMIT_STACK, &lim) < 0) {
perror("setrlimit");
exit(1);
}
@@ -49,7 +43,7 @@ static __init void do_uml_initcalls(void)
initcall_t *call;
call = &__uml_initcall_start;
- while (call < &__uml_initcall_end){
+ while (call < &__uml_initcall_end) {
(*call)();
call++;
}
@@ -68,7 +62,8 @@ static void install_fatal_handler(int sig)
/* All signals are enabled in this handler ... */
sigemptyset(&action.sa_mask);
- /* ... including the signal being handled, plus we want the
+ /*
+ * ... including the signal being handled, plus we want the
* handler reset to the default behavior, so that if an exit
* handler is hanging for some reason, the UML will just die
* after this signal is sent a second time.
@@ -76,7 +71,7 @@ static void install_fatal_handler(int sig)
action.sa_flags = SA_RESETHAND | SA_NODEFER;
action.sa_restorer = NULL;
action.sa_handler = last_ditch_exit;
- if(sigaction(sig, &action, NULL) < 0){
+ if (sigaction(sig, &action, NULL) < 0) {
printf("failed to install handler for signal %d - errno = %d\n",
errno);
exit(1);
@@ -92,7 +87,8 @@ static void setup_env_path(void)
int path_len = 0;
old_path = getenv("PATH");
- /* if no PATH variable is set or it has an empty value
+ /*
+ * if no PATH variable is set or it has an empty value
* just use the default + /usr/lib/uml
*/
if (!old_path || (path_len = strlen(old_path)) == 0) {
@@ -125,38 +121,41 @@ int __init main(int argc, char **argv, char **envp)
setup_env_path();
new_argv = malloc((argc + 1) * sizeof(char *));
- if(new_argv == NULL){
+ if (new_argv == NULL) {
perror("Mallocing argv");
exit(1);
}
- for(i=0;i<argc;i++){
+ for (i = 0; i < argc; i++) {
new_argv[i] = strdup(argv[i]);
- if(new_argv[i] == NULL){
+ if (new_argv[i] == NULL) {
perror("Mallocing an arg");
exit(1);
}
}
new_argv[argc] = NULL;
- /* Allow these signals to bring down a UML if all other
+ /*
+ * Allow these signals to bring down a UML if all other
* methods of control fail.
*/
install_fatal_handler(SIGINT);
install_fatal_handler(SIGTERM);
install_fatal_handler(SIGHUP);
- scan_elf_aux( envp);
+ scan_elf_aux(envp);
do_uml_initcalls();
ret = linux_main(argc, argv);
- /* Disable SIGPROF - I have no idea why libc doesn't do this or turn
+ /*
+ * Disable SIGPROF - I have no idea why libc doesn't do this or turn
* off the profiling time, but UML dies with a SIGPROF just before
* exiting when profiling is active.
*/
change_sig(SIGPROF, 0);
- /* This signal stuff used to be in the reboot case. However,
+ /*
+ * This signal stuff used to be in the reboot case. However,
* sometimes a SIGVTALRM can come in when we're halting (reproducably
* when writing out gcov information, presumably because that takes
* some time) and cause a segfault.
@@ -167,17 +166,18 @@ int __init main(int argc, char **argv, char **envp)
/* disable SIGIO for the fds and set SIGIO to be ignored */
err = deactivate_all_fds();
- if(err)
+ if (err)
printf("deactivate_all_fds failed, errno = %d\n", -err);
- /* Let any pending signals fire now. This ensures
+ /*
+ * Let any pending signals fire now. This ensures
* that they won't be delivered after the exec, when
* they are definitely not expected.
*/
unblock_signals();
/* Reboot */
- if(ret){
+ if (ret) {
printf("\n");
execvp(new_argv[0], new_argv);
perror("Failed to exec kernel");
@@ -193,17 +193,18 @@ void *__wrap_malloc(int size)
{
void *ret;
- if(!kmalloc_ok)
+ if (!kmalloc_ok)
return __real_malloc(size);
- else if(size <= UM_KERN_PAGE_SIZE)
+ else if (size <= UM_KERN_PAGE_SIZE)
/* finding contiguous pages can be hard*/
ret = kmalloc(size, UM_GFP_KERNEL);
else ret = vmalloc(size);
- /* glibc people insist that if malloc fails, errno should be
+ /*
+ * glibc people insist that if malloc fails, errno should be
* set by malloc as well. So we do.
*/
- if(ret == NULL)
+ if (ret == NULL)
errno = ENOMEM;
return ret;
@@ -213,7 +214,7 @@ void *__wrap_calloc(int n, int size)
{
void *ptr = __wrap_malloc(n * size);
- if(ptr == NULL)
+ if (ptr == NULL)
return NULL;
memset(ptr, 0, n * size);
return ptr;
@@ -227,7 +228,8 @@ void __wrap_free(void *ptr)
{
unsigned long addr = (unsigned long) ptr;
- /* We need to know how the allocation happened, so it can be correctly
+ /*
+ * We need to know how the allocation happened, so it can be correctly
* freed. This is done by seeing what region of memory the pointer is
* in -
* physical memory - kmalloc/kfree
@@ -245,12 +247,12 @@ void __wrap_free(void *ptr)
* there is a possibility for memory leaks.
*/
- if((addr >= uml_physmem) && (addr < high_physmem)){
- if(kmalloc_ok)
+ if ((addr >= uml_physmem) && (addr < high_physmem)) {
+ if (kmalloc_ok)
kfree(ptr);
}
- else if((addr >= start_vm) && (addr < end_vm)){
- if(kmalloc_ok)
+ else if ((addr >= start_vm) && (addr < end_vm)) {
+ if (kmalloc_ok)
vfree(ptr);
}
else __real_free(ptr);
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-11 21:08:28 +0000