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powerpc: switch to generic compat rt_sigqueueinfo()

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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2012-12-25 15:47:10 -05:00
parent cfe0467c4e
commit 309e44b39e
2 changed files with 1 additions and 24 deletions
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1
arch/powerpc/Kconfig
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@ -145,6 +145,7 @@ config PPC
select MODULES_USE_ELF_RELA
select CLONE_BACKWARDS
select GENERIC_SIGALTSTACK
select GENERIC_COMPAT_RT_SIGQUEUEINFO
select GENERIC_COMPAT_RT_SIGPROCMASK
select GENERIC_COMPAT_RT_SIGPENDING

24
arch/powerpc/kernel/signal_32.c
View File

@ -688,30 +688,6 @@ int copy_siginfo_from_user32(siginfo_t *to, struct compat_siginfo __user *from)
return 0;
}
/*
* Note: it is necessary to treat pid and sig as unsigned ints, with the
* corresponding cast to a signed int to insure that the proper conversion
* (sign extension) between the register representation of a signed int
* (msr in 32-bit mode) and the register representation of a signed int
* (msr in 64-bit mode) is performed.
*/
long compat_sys_rt_sigqueueinfo(u32 pid, u32 sig, compat_siginfo_t __user *uinfo)
{
siginfo_t info;
int ret;
mm_segment_t old_fs = get_fs();
ret = copy_siginfo_from_user32(&info, uinfo);
if (unlikely(ret))
return ret;
set_fs (KERNEL_DS);
/* The __user pointer cast is valid becasuse of the set_fs() */
ret = sys_rt_sigqueueinfo((int)pid, (int)sig, (siginfo_t __user *) &info);
set_fs (old_fs);
return ret;
}
#endif /* CONFIG_PPC64 */
/*