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[PATCH] uml: tls support: hack to make it compile on any host

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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>
This commit is contained in:
Paolo 'Blaisorblade' Giarrusso 2006-03-31 02:30:23 -08:00 committed by Linus Torvalds
parent aa6758d486
commit dd77aec07a
4 changed files with 68 additions and 11 deletions
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7
arch/um/include/os.h
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@ -13,6 +13,7 @@
#include "kern_util.h"
#include "skas/mm_id.h"
#include "irq_user.h"
#include "sysdep/tls.h"
#define OS_TYPE_FILE 1
#define OS_TYPE_DIR 2
@ -238,10 +239,10 @@ extern int helper_wait(int pid);
/* tls.c */
extern int os_set_thread_area(void *data, int pid);
extern int os_get_thread_area(void *data, int pid);
/* umid.c */
extern int os_set_thread_area(user_desc_t *info, int pid);
extern int os_get_thread_area(user_desc_t *info, int pid);
/* umid.c */
extern int umid_file_name(char *name, char *buf, int len);
extern int set_umid(char *name);
extern char *get_umid(void);

28
arch/um/include/sysdep-i386/tls.h Normal file
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@ -0,0 +1,28 @@
#ifndef _SYSDEP_TLS_H
#define _SYSDEP_TLS_H
# ifndef __KERNEL__
/* Change name to avoid conflicts with the original one from <asm/ldt.h>, which
* may be named user_desc (but in 2.4 and in header matching its API was named
* modify_ldt_ldt_s). */
typedef struct um_dup_user_desc {
unsigned int entry_number;
unsigned int base_addr;
unsigned int limit;
unsigned int seg_32bit:1;
unsigned int contents:2;
unsigned int read_exec_only:1;
unsigned int limit_in_pages:1;
unsigned int seg_not_present:1;
unsigned int useable:1;
} user_desc_t;
# else /* __KERNEL__ */
# include <asm/ldt.h>
typedef struct user_desc user_desc_t;
# endif /* __KERNEL__ */
#endif /* _SYSDEP_TLS_H */

29
arch/um/include/sysdep-x86_64/tls.h Normal file
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@ -0,0 +1,29 @@
#ifndef _SYSDEP_TLS_H
#define _SYSDEP_TLS_H
# ifndef __KERNEL__
/* Change name to avoid conflicts with the original one from <asm/ldt.h>, which
* may be named user_desc (but in 2.4 and in header matching its API was named
* modify_ldt_ldt_s). */
typedef struct um_dup_user_desc {
unsigned int entry_number;
unsigned int base_addr;
unsigned int limit;
unsigned int seg_32bit:1;
unsigned int contents:2;
unsigned int read_exec_only:1;
unsigned int limit_in_pages:1;
unsigned int seg_not_present:1;
unsigned int useable:1;
unsigned int lm:1;
} user_desc_t;
# else /* __KERNEL__ */
# include <asm/ldt.h>
typedef struct user_desc user_desc_t;
# endif /* __KERNEL__ */
#endif /* _SYSDEP_TLS_H */

15
arch/um/os-Linux/tls.c
View File

@ -1,6 +1,7 @@
#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.*/
@ -18,9 +19,8 @@
#define PTRACE_SET_THREAD_AREA 26
#endif
int os_set_thread_area(void *data, int pid)
int os_set_thread_area(user_desc_t *info, int pid)
{
struct user_desc *info = data;
int ret;
ret = ptrace(PTRACE_SET_THREAD_AREA, pid, info->entry_number,
@ -32,9 +32,8 @@ int os_set_thread_area(void *data, int pid)
#ifdef UML_CONFIG_MODE_SKAS
int os_get_thread_area(void *data, int pid)
int os_get_thread_area(user_desc_t *info, int pid)
{
struct user_desc *info = data;
int ret;
ret = ptrace(PTRACE_GET_THREAD_AREA, pid, info->entry_number,
@ -49,10 +48,10 @@ int os_get_thread_area(void *data, int pid)
#ifdef UML_CONFIG_MODE_TT
#include "linux/unistd.h"
_syscall1(int, get_thread_area, struct user_desc *, u_info);
_syscall1(int, set_thread_area, struct user_desc *, u_info);
_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(struct user_desc *info)
int do_set_thread_area_tt(user_desc_t *info)
{
int ret;
@ -63,7 +62,7 @@ int do_set_thread_area_tt(struct user_desc *info)
return ret;
}
int do_get_thread_area_tt(struct user_desc *info)
int do_get_thread_area_tt(user_desc_t *info)
{
int ret;