From 6355a1f8677857f613a8b3bbd209506d1634c73f Mon Sep 17 00:00:00 2001
From: "Dmitry V. Levin" <ldv@altlinux.org>
Date: Mon, 1 Dec 2014 18:24:55 +0000
Subject: [PATCH] Alias sys_mkdir and sys_mkdirat to sys_chmod and sys_fchmodat

Special parsers for mkdir and mkdirat are redundant because
sys_chmod and sys_fchmodat implement the same decoding.

* file.c (decode_mkdir, sys_mkdir, sys_mkdirat): Remove.
* linux/dummy.h (sys_mkdir): Alias to sys_chmod.
(sys_mkdirat): Alias to sys_fchmodat.
* linux/syscall.h (sys_mkdir, sys_mkdirat): Remove.
* pathtrace.c (pathtrace_match): Do not check for sys_mkdirat.
---
 file.c          | 24 ------------------------
 linux/dummy.h   |  2 ++
 linux/syscall.h |  2 --
 pathtrace.c     |  1 -
 4 files changed, 2 insertions(+), 27 deletions(-)

diff --git a/file.c b/file.c
index 522b541f..e4dd33b6 100644
--- a/file.c
+++ b/file.c
@@ -1347,30 +1347,6 @@ sys_chdir(struct tcb *tcp)
 	return 0;
 }
 
-static int
-decode_mkdir(struct tcb *tcp, int offset)
-{
-	if (entering(tcp)) {
-		printpath(tcp, tcp->u_arg[offset]);
-		tprintf(", %#lo", tcp->u_arg[offset + 1]);
-	}
-	return 0;
-}
-
-int
-sys_mkdir(struct tcb *tcp)
-{
-	return decode_mkdir(tcp, 0);
-}
-
-int
-sys_mkdirat(struct tcb *tcp)
-{
-	if (entering(tcp))
-		print_dirfd(tcp, tcp->u_arg[0]);
-	return decode_mkdir(tcp, 1);
-}
-
 int
 sys_link(struct tcb *tcp)
 {
diff --git a/linux/dummy.h b/linux/dummy.h
index 31be7b74..7a8b17ca 100644
--- a/linux/dummy.h
+++ b/linux/dummy.h
@@ -68,6 +68,8 @@
 #define	sys_getresgid		sys_getresuid
 #define	sys_lstat		sys_stat
 #define	sys_lstat64		sys_stat64
+#define	sys_mkdir		sys_chmod
+#define	sys_mkdirat		sys_fchmodat
 #define	sys_mlock		sys_munmap
 #define	sys_mq_unlink		sys_chdir
 #define	sys_munlock		sys_munmap
diff --git a/linux/syscall.h b/linux/syscall.h
index 0e695989..47c7a508 100644
--- a/linux/syscall.h
+++ b/linux/syscall.h
@@ -140,8 +140,6 @@ int sys_madvise();
 int sys_mbind();
 int sys_migrate_pages();
 int sys_mincore();
-int sys_mkdir();
-int sys_mkdirat();
 int sys_mknod();
 int sys_mknodat();
 int sys_mlockall();
diff --git a/pathtrace.c b/pathtrace.c
index ccfb3c27..28fc7c9a 100644
--- a/pathtrace.c
+++ b/pathtrace.c
@@ -181,7 +181,6 @@ pathtrace_match(struct tcb *tcp)
 	    s->sys_func == sys_faccessat ||
 	    s->sys_func == sys_fchmodat ||
 	    s->sys_func == sys_futimesat ||
-	    s->sys_func == sys_mkdirat ||
 	    s->sys_func == sys_unlinkat ||
 	    s->sys_func == sys_newfstatat ||
 	    s->sys_func == sys_mknodat ||
-- 
2.40.0