dd77aec07a
Copy the definition of struct user_desc (with another name) for use by userspace sources (where we use the host headers, and we can't be sure about their content) to make sure UML compiles. Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Acked-by: Jeff Dike <jdike@addtoit.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
77 lines
1.4 KiB
C
77 lines
1.4 KiB
C
#include <errno.h>
|
|
#include <sys/ptrace.h>
|
|
#include <asm/ldt.h>
|
|
#include "sysdep/tls.h"
|
|
#include "uml-config.h"
|
|
|
|
/* TLS support - we basically rely on the host's one.*/
|
|
|
|
/* In TT mode, this should be called only by the tracing thread, and makes sense
|
|
* only for PTRACE_SET_THREAD_AREA. In SKAS mode, it's used normally.
|
|
*
|
|
*/
|
|
|
|
#ifndef PTRACE_GET_THREAD_AREA
|
|
#define PTRACE_GET_THREAD_AREA 25
|
|
#endif
|
|
|
|
#ifndef PTRACE_SET_THREAD_AREA
|
|
#define PTRACE_SET_THREAD_AREA 26
|
|
#endif
|
|
|
|
int os_set_thread_area(user_desc_t *info, int pid)
|
|
{
|
|
int ret;
|
|
|
|
ret = ptrace(PTRACE_SET_THREAD_AREA, pid, info->entry_number,
|
|
(unsigned long) info);
|
|
if (ret < 0)
|
|
ret = -errno;
|
|
return ret;
|
|
}
|
|
|
|
#ifdef UML_CONFIG_MODE_SKAS
|
|
|
|
int os_get_thread_area(user_desc_t *info, int pid)
|
|
{
|
|
int ret;
|
|
|
|
ret = ptrace(PTRACE_GET_THREAD_AREA, pid, info->entry_number,
|
|
(unsigned long) info);
|
|
if (ret < 0)
|
|
ret = -errno;
|
|
return ret;
|
|
}
|
|
|
|
#endif
|
|
|
|
#ifdef UML_CONFIG_MODE_TT
|
|
#include "linux/unistd.h"
|
|
|
|
_syscall1(int, get_thread_area, user_desc_t *, u_info);
|
|
_syscall1(int, set_thread_area, user_desc_t *, u_info);
|
|
|
|
int do_set_thread_area_tt(user_desc_t *info)
|
|
{
|
|
int ret;
|
|
|
|
ret = set_thread_area(info);
|
|
if (ret < 0) {
|
|
ret = -errno;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
int do_get_thread_area_tt(user_desc_t *info)
|
|
{
|
|
int ret;
|
|
|
|
ret = get_thread_area(info);
|
|
if (ret < 0) {
|
|
ret = -errno;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
#endif /* UML_CONFIG_MODE_TT */
|