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IA-32: Support for new system call: waitid

PATCH New Arun Sharma 1 participant 1 message Oct 6, 2004

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Arun Sharma

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PATCH 1/1 IA-32: Support for new system call: waitid

Hi Tony,

The attached patch adds support for the new system call waitid that was introduced recently.

-Arun

Added support for the new syscall sys_waitid()

Signed-off-by Arun Sharma <[email protected]>

Index: linux-2.6-cvs/arch/ia64/ia32/ia32_entry.S
===================================================================
RCS file: /home/adsharma/disk2/cvs/linux-2.5/arch/ia64/ia32/ia32_entry.S,v retrieving revision 1.37

arch/ia64/ia32/ia32_entry.S +2 -0
diff -u -r1.37 ia32_entry.S
@@ -493,6 +493,8 @@
   	data8 compat_sys_mq_timedreceive	/* 280 */
   	data8 compat_sys_mq_notify
   	data8 compat_sys_mq_getsetattr
+	data8 sys_ni_syscall		/* reserved for kexec */
+	data8 sys32_waitid
 
 	// guard against failures to increase IA32_NR_syscalls
 	.org ia32_syscall_table + 8*IA32_NR_syscalls

Index: linux-2.6-cvs/arch/ia64/ia32/sys_ia32.c
===================================================================
RCS file: /home/adsharma/disk2/cvs/linux-2.5/arch/ia64/ia32/sys_ia32.c,v retrieving revision 1.71

arch/ia64/ia32/sys_ia32.c +26 -0
diff -u -r1.71 sys_ia32.c
@@ -2728,6 +2728,32 @@
 			       advice); 
 } 
 
+asmlinkage long sys32_waitid(int which, compat_pid_t pid,
+			     siginfo_t32 __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 ? &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);
+}
+
 #ifdef	NOTYET  /* UNTESTED FOR IA64 FROM HERE DOWN */
 
 asmlinkage long sys32_setreuid(compat_uid_t ruid, compat_uid_t euid)

Index: linux-2.6-cvs/include/asm-ia64/ia32.h
===================================================================
RCS file: /home/adsharma/disk2/cvs/linux-2.5/include/asm-ia64/ia32.h,v retrieving revision 1.22

include/asm-ia64/ia32.h +1 -1
diff -u -r1.22 ia32.h
@@ -6,7 +6,7 @@
 #include <asm/ptrace.h>
 #include <asm/signal.h>
 
-#define IA32_NR_syscalls		283	/* length of syscall table */
+#define IA32_NR_syscalls		285	/* length of syscall table */
 #define IA32_PAGE_SHIFT			12	/* 4KB pages */
 
 #ifndef __ASSEMBLY__