From: Dmitry V. Levin <ldv@altlinux.org>
Date: Sat, 10 Mar 2012 14:14:49 +0000 (+0000)
Subject: Implement process_vm_writev decoder
X-Git-Tag: v4.7~132
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=039521051e566420b48dc9f2e01691973ec39c02;p=strace

Implement process_vm_writev decoder

* process.c (sys_process_vm_writev): New function.
* linux/syscall.h (sys_process_vm_writev): New prototype.
---

diff --git a/linux/syscall.h b/linux/syscall.h
index 4eb7368b..a2600480 100644
--- a/linux/syscall.h
+++ b/linux/syscall.h
@@ -175,6 +175,7 @@ int sys_preadv();
 int sys_pselect6();
 int sys_ptrace();
 int sys_process_vm_readv();
+int sys_process_vm_writev();
 int sys_putpmsg();
 int sys_pwrite();
 int sys_pwritev();
diff --git a/process.c b/process.c
index 39e6f781..a9b0eb30 100644
--- a/process.c
+++ b/process.c
@@ -2774,3 +2774,28 @@ sys_process_vm_readv(struct tcb *tcp)
 	}
 	return 0;
 }
+
+int
+sys_process_vm_writev(struct tcb *tcp)
+{
+	if (entering(tcp)) {
+		/* arg 1: pid */
+		tprintf("%ld, ", tcp->u_arg[0]);
+		/* arg 2: local iov */
+		if (syserror(tcp))
+			tprintf("%#lx", tcp->u_arg[1]);
+		else
+			tprint_iov(tcp, tcp->u_arg[2], tcp->u_arg[1], 1);
+		/* arg 3: local iovcnt */
+		tprintf(", %lu, ", tcp->u_arg[2]);
+		/* arg 4: remote iov */
+		if (syserror(tcp))
+			tprintf("%#lx", tcp->u_arg[3]);
+		else
+			tprint_iov(tcp, tcp->u_arg[4], tcp->u_arg[3], 0);
+		/* arg 5: remote iovcnt */
+		/* arg 6: flags */
+		tprintf(", %lu, %lu", tcp->u_arg[4], tcp->u_arg[5]);
+	}
+	return 0;
+}