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[PATCH] common compat_sys_timer_create

Browse source 
The comment in compat.c is wrong, every architecture provides a
get_compat_sigevent() for the IPC compat code already.

This basically moves the x86_64 version to common code and removes all the
others.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Paul Mackerras <paulus@samba.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: "David S. Miller" <davem@davemloft.net>
Acked-by: Andi Kleen <ak@muc.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Christoph Hellwig 2006-01-09 20:52:08 -08:00 committed by Linus Torvalds
parent f042e0f80b
commit 3a0f69d59b
11 changed files with 23 additions and 154 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
arch/ia64/ia32/ia32_entry.S
View file

@ -469,7 +469,7 @@ ia32_syscall_table:
data8 sys32_epoll_wait
data8 sys_remap_file_pages
data8 sys_set_tid_address
data8 sys32_timer_create
data8 compat_sys_timer_create
data8 compat_sys_timer_settime /* 260 */
data8 compat_sys_timer_gettime
data8 sys_timer_getoverrun

28
arch/ia64/ia32/sys_ia32.c
View file

@ -2553,34 +2553,6 @@ sys32_get_thread_area (struct ia32_user_desc __user *u_info)
return 0;
}
asmlinkage long
sys32_timer_create(u32 clock, struct compat_sigevent __user *se32, timer_t __user *timer_id)
{
struct sigevent se;
mm_segment_t oldfs;
timer_t t;
long err;
if (se32 == NULL)
return sys_timer_create(clock, NULL, timer_id);
if (get_compat_sigevent(&se, se32))
return -EFAULT;
if (!access_ok(VERIFY_WRITE,timer_id,sizeof(timer_t)))
return -EFAULT;
oldfs = get_fs();
set_fs(KERNEL_DS);
err = sys_timer_create(clock, (struct sigevent __user *) &se, (timer_t __user *) &t);
set_fs(oldfs);
if (!err)
err = __put_user (t, timer_id);
return err;
}
long sys32_fadvise64_64(int fd, __u32 offset_low, __u32 offset_high,
__u32 len_low, __u32 len_high, int advice)
{

32
arch/powerpc/kernel/sys_ppc32.c
View file

@ -956,38 +956,6 @@ long ppc32_fadvise64(int fd, u32 unused, u32 offset_high, u32 offset_low,
advice);
}
long ppc32_timer_create(clockid_t clock,
struct compat_sigevent __user *ev32,
timer_t __user *timer_id)
{
sigevent_t event;
timer_t t;
long err;
mm_segment_t savefs;
if (ev32 == NULL)
return sys_timer_create(clock, NULL, timer_id);
if (get_compat_sigevent(&event, ev32))
return -EFAULT;
if (!access_ok(VERIFY_WRITE, timer_id, sizeof(timer_t)))
return -EFAULT;
savefs = get_fs();
set_fs(KERNEL_DS);
/* The __user pointer casts are valid due to the set_fs() */
err = sys_timer_create(clock,
(sigevent_t __user *) &event,
(timer_t __user *) &t);
set_fs(savefs);
if (err == 0)
err = __put_user(t, timer_id);
return err;
}
asmlinkage long compat_sys_add_key(const char __user *_type,
const char __user *_description,
const void __user *_payload,

2
arch/powerpc/kernel/systbl.S
View file

@ -281,7 +281,7 @@ SYSCALL(epoll_create)
SYSCALL(epoll_ctl)
SYSCALL(epoll_wait)
SYSCALL(remap_file_pages)
SYSX(sys_timer_create,ppc32_timer_create,sys_timer_create)
SYSX(sys_timer_create,compat_sys_timer_create,sys_timer_create)
COMPAT_SYS(timer_settime)
COMPAT_SYS(timer_gettime)
SYSCALL(timer_getoverrun)

32
arch/s390/kernel/compat_linux.c
View file

@ -1013,38 +1013,6 @@ asmlinkage long sys32_clone(struct pt_regs regs)
parent_tidptr, child_tidptr);
}
/*
* Wrapper function for sys_timer_create.
*/
extern asmlinkage long
sys_timer_create(clockid_t, struct sigevent *, timer_t *);
asmlinkage long
sys32_timer_create(clockid_t which_clock, struct compat_sigevent *se32,
timer_t *timer_id)
{
struct sigevent se;
timer_t ktimer_id;
mm_segment_t old_fs;
long ret;
if (se32 == NULL)
return sys_timer_create(which_clock, NULL, timer_id);
if (get_compat_sigevent(&se, se32))
return -EFAULT;
old_fs = get_fs();
set_fs(KERNEL_DS);
ret = sys_timer_create(which_clock, &se, &ktimer_id);
set_fs(old_fs);
if (!ret)
ret = put_user (ktimer_id, timer_id);
return ret;
}
/*
* 31 bit emulation wrapper functions for sys_fadvise64/fadvise64_64.
* These need to rewrite the advise values for POSIX_FADV_{DONTNEED,NOREUSE}

2
arch/s390/kernel/compat_wrapper.S
View file

@ -1289,7 +1289,7 @@ sys32_timer_create_wrapper:
lgfr %r2,%r2 # timer_t (int)
llgtr %r3,%r3 # struct compat_sigevent *
llgtr %r4,%r4 # timer_t *
jg sys32_timer_create
jg compat_sys_timer_create
.globl sys32_timer_settime_wrapper
sys32_timer_settime_wrapper:

36
arch/sparc64/kernel/sys_sparc32.c
View file

@ -1120,39 +1120,3 @@ long sys32_lookup_dcookie(unsigned long cookie_high,
return sys_lookup_dcookie((cookie_high << 32) | cookie_low,
buf, len);
}
extern asmlinkage long
sys_timer_create(clockid_t which_clock,
struct sigevent __user *timer_event_spec,
timer_t __user *created_timer_id);
long
sys32_timer_create(u32 clock, struct compat_sigevent __user *se32,
timer_t __user *timer_id)
{
struct sigevent se;
mm_segment_t oldfs;
timer_t t;
long err;
if (se32 == NULL)
return sys_timer_create(clock, NULL, timer_id);
if (get_compat_sigevent(&se, se32))
return -EFAULT;
if (!access_ok(VERIFY_WRITE,timer_id,sizeof(timer_t)))
return -EFAULT;
oldfs = get_fs();
set_fs(KERNEL_DS);
err = sys_timer_create(clock,
(struct sigevent __user *) &se,
(timer_t __user *) &t);
set_fs(oldfs);
if (!err)
err = __put_user (t, timer_id);
return err;
}

2
arch/sparc64/kernel/systbls.S
View file

@ -73,7 +73,7 @@ sys_call_table32:
/*250*/ .word sys32_mremap, sys32_sysctl, sys32_getsid, sys_fdatasync, sys32_nfsservctl
.word sys_ni_syscall, sys32_clock_settime, compat_sys_clock_gettime, compat_sys_clock_getres, sys32_clock_nanosleep
/*260*/ .word compat_sys_sched_getaffinity, compat_sys_sched_setaffinity, sys32_timer_settime, compat_sys_timer_gettime, sys_timer_getoverrun
.word sys_timer_delete, sys32_timer_create, sys_ni_syscall, compat_sys_io_setup, sys_io_destroy
.word sys_timer_delete, compat_sys_timer_create, sys_ni_syscall, compat_sys_io_setup, sys_io_destroy
/*270*/ .word sys32_io_submit, sys_io_cancel, compat_sys_io_getevents, sys32_mq_open, sys_mq_unlink
.word compat_sys_mq_timedsend, compat_sys_mq_timedreceive, compat_sys_mq_notify, compat_sys_mq_getsetattr, compat_sys_waitid
/*280*/ .word sys_ni_syscall, sys_add_key, sys_request_key, sys_keyctl

2
arch/x86_64/ia32/ia32entry.S
View file

@ -608,7 +608,7 @@ ia32_sys_call_table:
.quad sys_epoll_wait
.quad sys_remap_file_pages
.quad sys_set_tid_address
.quad sys32_timer_create
.quad compat_sys_timer_create
.quad compat_sys_timer_settime /* 260 */
.quad compat_sys_timer_gettime
.quad sys_timer_getoverrun

19
arch/x86_64/ia32/sys_ia32.c
View file

@ -969,25 +969,6 @@ long sys32_kill(int pid, int sig)
return sys_kill(pid, sig);
}
extern asmlinkage long
sys_timer_create(clockid_t which_clock,
struct sigevent __user *timer_event_spec,
timer_t __user * created_timer_id);
long
sys32_timer_create(u32 clock, struct compat_sigevent __user *se32, timer_t __user *timer_id)
{
struct sigevent __user *p = NULL;
if (se32) {
struct sigevent se;
p = compat_alloc_user_space(sizeof(struct sigevent));
if (get_compat_sigevent(&se, se32) ||
copy_to_user(p, &se, sizeof(se)))
return -EFAULT;
}
return sys_timer_create(clock, p, timer_id);
}
long sys32_fadvise64_64(int fd, __u32 offset_low, __u32 offset_high,
__u32 len_low, __u32 len_high, int advice)
{

20
kernel/compat.c
View file

@ -514,6 +514,24 @@ static int put_compat_itimerspec(struct compat_itimerspec __user *dst,
return 0;
}
long compat_sys_timer_create(clockid_t which_clock,
struct compat_sigevent __user *timer_event_spec,
timer_t __user *created_timer_id)
{
struct sigevent __user *event = NULL;
if (timer_event_spec) {
struct sigevent kevent;
event = compat_alloc_user_space(sizeof(*event));
if (get_compat_sigevent(&kevent, timer_event_spec) ||
copy_to_user(event, &kevent, sizeof(*event)))
return -EFAULT;
}
return sys_timer_create(which_clock, event, created_timer_id);
}
long compat_sys_timer_settime(timer_t timer_id, int flags,
struct compat_itimerspec __user *new,
struct compat_itimerspec __user *old)
@ -649,8 +667,6 @@ int get_compat_sigevent(struct sigevent *event,
? -EFAULT : 0;
}
/* timer_create is architecture specific because it needs sigevent conversion */
long compat_get_bitmap(unsigned long *mask, compat_ulong_t __user *umask,
unsigned long bitmap_size)
{