From: Ralf Baechle Date: Wed, 16 Feb 2005 21:21:29 +0000 (+0000) Subject: Implement 32-bit compatibility for waitid(2). X-Git-Tag: v2.6.15-rc1~731^2~1^2~294 X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=54f2da755b7f0bf022ea204240cba824af4d80ad;p=linux-2.6 Implement 32-bit compatibility for waitid(2). Signed-off-by: Ralf Baechle --- diff --git a/arch/mips/kernel/linux32.c b/arch/mips/kernel/linux32.c index dfb448c015..120dd89716 100644 --- a/arch/mips/kernel/linux32.c +++ b/arch/mips/kernel/linux32.c @@ -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]; diff --git a/arch/mips/kernel/scall64-n32.S b/arch/mips/kernel/scall64-n32.S index 3a56056d81..982248a173 100644 --- a/arch/mips/kernel/scall64-n32.S +++ b/arch/mips/kernel/scall64-n32.S @@ -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 diff --git a/arch/mips/kernel/scall64-o32.S b/arch/mips/kernel/scall64-o32.S index 271b2cb14d..00e0d2b8fd 100644 --- a/arch/mips/kernel/scall64-o32.S +++ b/arch/mips/kernel/scall64-o32.S @@ -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 diff --git a/arch/mips/kernel/signal32.c b/arch/mips/kernel/signal32.c index 8ddfbd8d42..d50daee51f 100644 --- a/arch/mips/kernel/signal32.c +++ b/arch/mips/kernel/signal32.c @@ -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); +}