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Implement 32-bit compatibility for waitid(2). 

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Ralf Baechle 2005-02-16 21:21:29 +00:00
parent a19050f301
commit 54f2da755b
4 changed files with 51 additions and 2 deletions
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22
arch/mips/kernel/linux32.c
View File

@ -221,6 +221,28 @@ sys32_waitpid(compat_pid_t pid, unsigned int *stat_addr, int options)
return compat_sys_wait4(pid, stat_addr, options, NULL);
}
asmlinkage long
sysn32_waitid(int which, compat_pid_t pid,
siginfo_t __user *uinfo, int options,
struct compat_rusage __user *uru)
{
struct rusage ru;
long ret;
mm_segment_t old_fs = get_fs();
set_fs (KERNEL_DS);
ret = sys_waitid(which, pid, uinfo, options,
uru ? (struct rusage __user *) &ru : NULL);
set_fs (old_fs);
if (ret < 0 || uinfo->si_signo == 0)
return ret;
if (uru)
ret = put_compat_rusage(&ru, uru);
return ret;
}
struct sysinfo32 {
s32 uptime;
u32 loads[3];

2
arch/mips/kernel/scall64-n32.S
View File

@ -358,7 +358,7 @@ EXPORT(sysn32_call_table)
PTR compat_sys_mq_notify
PTR compat_sys_mq_getsetattr
PTR sys_ni_syscall /* 6240, sys_vserver */
PTR sys_waitid
PTR sysn32_waitid
PTR sys_ni_syscall /* available, was setaltroot */
PTR sys_add_key
PTR sys_request_key

2
arch/mips/kernel/scall64-o32.S
View File

@ -480,7 +480,7 @@ sys_call_table:
PTR compat_sys_mq_notify /* 4275 */
PTR compat_sys_mq_getsetattr
PTR sys_ni_syscall /* sys_vserver */
PTR sys_waitid
PTR sys32_waitid
PTR sys_ni_syscall /* available, was setaltroot */
PTR sys_add_key /* 4280 */
PTR sys_request_key

27
arch/mips/kernel/signal32.c
View File

@ -902,3 +902,30 @@ asmlinkage int sys32_rt_sigqueueinfo(int pid, int sig, compat_siginfo_t *uinfo)
set_fs (old_fs);
return ret;
}
asmlinkage long
sys32_waitid(int which, compat_pid_t pid,
compat_siginfo_t __user *uinfo, int options,
struct compat_rusage __user *uru)
{
siginfo_t info;
struct rusage ru;
long ret;
mm_segment_t old_fs = get_fs();
info.si_signo = 0;
set_fs (KERNEL_DS);
ret = sys_waitid(which, pid, (siginfo_t __user *) &info, options,
uru ? (struct rusage __user *) &ru : NULL);
set_fs (old_fs);
if (ret < 0 || info.si_signo == 0)
return ret;
if (uru && (ret = put_compat_rusage(&ru, uru)))
return ret;
BUG_ON(info.si_code & __SI_MASK);
info.si_code |= __SI_CHLD;
return copy_siginfo_to_user32(uinfo, &info);
}