From: Dirk Mueller <daywalker@users.sourceforge.net>
Date: Wed, 31 Jan 2007 23:06:08 +0000 (+0000)
Subject: implement support for AT_FDCWD in openat()
X-Git-Tag: svn/VALGRIND_3_3_0~398
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ac2bbadda53005fcf3afff7014cab526eb2d8b62;p=thirdparty%2Fvalgrind.git

implement support for AT_FDCWD in openat()


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@6566
---

diff --git a/coregrind/m_syswrap/syswrap-linux.c b/coregrind/m_syswrap/syswrap-linux.c
index d8cbf87829..c34ca68f36 100644
--- a/coregrind/m_syswrap/syswrap-linux.c
+++ b/coregrind/m_syswrap/syswrap-linux.c
@@ -2435,7 +2435,7 @@ PRE(sys_openat)
                     int, dfd, const char *, filename, int, flags);
    }
 
-   if (!ML_(fd_allowed)(ARG1, "openat", tid, False))
+   if (ARG1 != VKI_AT_FDCWD && !ML_(fd_allowed)(ARG1, "openat", tid, False))
       SET_STATUS_Failure( VKI_EBADF );
    else
       PRE_MEM_RASCIIZ( "openat(filename)", ARG2 );
diff --git a/include/vki/vki-amd64-linux.h b/include/vki/vki-amd64-linux.h
index e1d05823aa..0187f0d3b5 100644
--- a/include/vki/vki-amd64-linux.h
+++ b/include/vki/vki-amd64-linux.h
@@ -240,6 +240,8 @@ struct vki_sigcontext {
 #define VKI_O_NONBLOCK	  04000
 #define VKI_O_LARGEFILE	0100000
 
+#define VKI_AT_FDCWD            -100
+
 #define VKI_F_DUPFD		0	/* dup */
 #define VKI_F_GETFD		1	/* get close_on_exec */
 #define VKI_F_SETFD		2	/* set/clear close_on_exec */
diff --git a/include/vki/vki-ppc32-linux.h b/include/vki/vki-ppc32-linux.h
index 63a2c3f48a..a5a14d382a 100644
--- a/include/vki/vki-ppc32-linux.h
+++ b/include/vki/vki-ppc32-linux.h
@@ -301,6 +301,8 @@ struct vki_sigcontext {
 #define VKI_O_NONBLOCK		04000
 #define VKI_O_LARGEFILE     0200000
 
+#define VKI_AT_FDCWD            -100
+
 #define VKI_F_DUPFD		 0			/* dup */
 #define VKI_F_GETFD		 1			/* get close_on_exec */
 #define VKI_F_SETFD		 2			/* set/clear close_on_exec */
diff --git a/include/vki/vki-ppc64-linux.h b/include/vki/vki-ppc64-linux.h
index 90446c3265..5dfde3bf07 100644
--- a/include/vki/vki-ppc64-linux.h
+++ b/include/vki/vki-ppc64-linux.h
@@ -358,6 +358,8 @@ struct vki_sigcontext {
 #define VKI_O_NONBLOCK        04000
 #define VKI_O_LARGEFILE     0200000
 
+#define VKI_AT_FDCWD            -100
+
 #define VKI_F_DUPFD         0       /* dup */
 #define VKI_F_GETFD         1       /* get close_on_exec */
 #define VKI_F_SETFD         2       /* set/clear close_on_exec */
diff --git a/include/vki/vki-x86-linux.h b/include/vki/vki-x86-linux.h
index 8c0184a293..05b1ed12c3 100644
--- a/include/vki/vki-x86-linux.h
+++ b/include/vki/vki-x86-linux.h
@@ -272,6 +272,8 @@ struct vki_sigcontext {
 #define VKI_O_NONBLOCK	  04000
 #define VKI_O_LARGEFILE	0100000
 
+#define VKI_AT_FDCWD            -100
+
 #define VKI_F_DUPFD		0	/* dup */
 #define VKI_F_GETFD		1	/* get close_on_exec */
 #define VKI_F_SETFD		2	/* set/clear close_on_exec */