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[PATCH] uml: skas0 stubs now check system call return values

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Change syscall-stub's data to include a "expected retval".

Stub now checks syscalls retval and aborts execution of syscall list, if
retval != expected retval.

run_syscall_stub prints the data of the failed syscall, using the data pointer
and retval written by the stub to the beginning of the stack.

one_syscall_stub is removed, to simplify code, because only some instructions
are saved by one_syscall_stub, no host-syscall.

Using the stub with additional data (modify_ldt via stub)
is prepared also.

Signed-off-by: Bodo Stroesser <bstroesser@fujitsu-siemens.com>
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Bodo Stroesser
2005-09-03 15:57:50 -07:00
committed by Linus Torvalds
parent 8b51304ed3
commit 07bf731e4b
8 changed files with 354 additions and 244 deletions
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6
arch/um/include/tlb.h
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@@ -38,9 +38,9 @@ extern void mprotect_kernel_vm(int w);
extern void force_flush_all(void);
extern void fix_range_common(struct mm_struct *mm, unsigned long start_addr,
unsigned long end_addr, int force,
void *(*do_ops)(union mm_context *,
struct host_vm_op *, int, int,
void *));
int (*do_ops)(union mm_context *,
struct host_vm_op *, int, int,
void **));
extern int flush_tlb_kernel_range_common(unsigned long start,
unsigned long end);