X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;ds=sidebyside;f=arch%2Fum%2Fkernel%2Ftt%2Fsyscall_kern.c;h=c02e504e54c1b331d56b9f198e43f5050a8e1d0c;hb=6a77f38946aaee1cd85eeec6cf4229b204c15071;hp=1b71f9ce51843193d9aa33be1a1b8ff07f043ab8;hpb=5273a3df6485dc2ad6aa7ddd441b9a21970f003b;p=linux-2.6.git

diff --git a/arch/um/kernel/tt/syscall_kern.c b/arch/um/kernel/tt/syscall_kern.c
index 1b71f9ce5..c02e504e5 100644
--- a/arch/um/kernel/tt/syscall_kern.c
+++ b/arch/um/kernel/tt/syscall_kern.c
@@ -1,5 +1,5 @@
 /* 
- * Copyright (C) 2000 Jeff Dike (jdike@karaya.com)
+ * Copyright (C) 2000 - 2003 Jeff Dike (jdike@addtoit.com)
  * Licensed under the GPL
  */
 
@@ -14,95 +14,6 @@
 #include "sysdep/syscalls.h"
 #include "kern_util.h"
 
-static inline int check_area(void *ptr, int size)
-{
-	return(verify_area(VERIFY_WRITE, ptr, size));
-}
-
-static int check_readlink(struct pt_regs *regs)
-{
-	return(check_area((void *) UPT_SYSCALL_ARG1(&regs->regs),
-			  UPT_SYSCALL_ARG2(&regs->regs)));
-}
-
-static int check_utime(struct pt_regs *regs)
-{
-	return(check_area((void *) UPT_SYSCALL_ARG1(&regs->regs),
-			  sizeof(struct utimbuf)));
-}
-
-static int check_oldstat(struct pt_regs *regs)
-{
-	return(check_area((void *) UPT_SYSCALL_ARG1(&regs->regs), 
-			  sizeof(struct __old_kernel_stat)));
-}
-
-static int check_stat(struct pt_regs *regs)
-{
-	return(check_area((void *) UPT_SYSCALL_ARG1(&regs->regs), 
-			  sizeof(struct stat)));
-}
-
-static int check_stat64(struct pt_regs *regs)
-{
-	return(check_area((void *) UPT_SYSCALL_ARG1(&regs->regs), 
-			  sizeof(struct stat64)));
-}
-
-struct bogus {
-	int kernel_ds;
-	int (*check_params)(struct pt_regs *);
-};
-
-struct bogus this_is_bogus[256] = {
-	[ __NR_mknod ] = { 1, NULL },
-	[ __NR_mkdir ] = { 1, NULL },
-	[ __NR_rmdir ] = { 1, NULL },
-	[ __NR_unlink ] = { 1, NULL },
-	[ __NR_symlink ] = { 1, NULL },
-	[ __NR_link ] = { 1, NULL },
-	[ __NR_rename ] = { 1, NULL },
-	[ __NR_umount ] = { 1, NULL },
-	[ __NR_mount ] = { 1, NULL },
-	[ __NR_pivot_root ] = { 1, NULL },
-	[ __NR_chdir ] = { 1, NULL },
-	[ __NR_chroot ] = { 1, NULL },
-	[ __NR_open ] = { 1, NULL },
-	[ __NR_quotactl ] = { 1, NULL },
-	[ __NR_sysfs ] = { 1, NULL },
-	[ __NR_readlink ] = { 1, check_readlink },
-	[ __NR_acct ] = { 1, NULL },
-	[ __NR_execve ] = { 1, NULL },
-	[ __NR_uselib ] = { 1, NULL },
-	[ __NR_statfs ] = { 1, NULL },
-	[ __NR_truncate ] = { 1, NULL },
-	[ __NR_access ] = { 1, NULL },
-	[ __NR_chmod ] = { 1, NULL },
-	[ __NR_chown ] = { 1, NULL },
-	[ __NR_lchown ] = { 1, NULL },
-	[ __NR_utime ] = { 1, check_utime },
-	[ __NR_oldlstat ] = { 1, check_oldstat },
-	[ __NR_oldstat ] = { 1, check_oldstat },
-	[ __NR_stat ] = { 1, check_stat },
-	[ __NR_lstat ] = { 1, check_stat },
-	[ __NR_stat64 ] = { 1, check_stat64 },
-	[ __NR_lstat64 ] = { 1, check_stat64 },
-	[ __NR_chown32 ] = { 1, NULL },
-};
-
-/* sys_utimes */
-
-static int check_bogosity(struct pt_regs *regs)
-{
-	struct bogus *bogon = &this_is_bogus[UPT_SYSCALL_NR(&regs->regs)];
-
-	if(!bogon->kernel_ds) return(0);
-	if(bogon->check_params && (*bogon->check_params)(regs))
-		return(-EFAULT);
-	set_fs(KERNEL_DS);
-	return(0);
-}
-
 extern syscall_handler_t *sys_call_table[];
 
 long execute_syscall_tt(void *r)
@@ -117,18 +28,8 @@ long execute_syscall_tt(void *r)
 
 	if((syscall >= NR_syscalls) || (syscall < 0))
 		res = -ENOSYS;
-	else if(honeypot && check_bogosity(regs))
-		res = -EFAULT;
 	else res = EXECUTE_SYSCALL(syscall, regs);
 
-	set_fs(USER_DS);
-
-	if(current->thread.mode.tt.singlestep_syscall){
-		current->thread.mode.tt.singlestep_syscall = 0;
-		current->ptrace &= ~PT_DTRACE;
-		force_sig(SIGTRAP, current);
-	}
-
 	return(res);
 }