From: Bart Van Assche <bvanassche@acm.org>
Date: Tue, 5 Aug 2014 12:01:26 +0000 (+0000)
Subject: Linux: Add support for Lustre FID2PATH ioctl (#331829)
X-Git-Tag: svn/VALGRIND_3_10_0~225
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e7777bc86717d933ad003ad206a2223a7e3a7e3f;p=thirdparty%2Fvalgrind.git

Linux: Add support for Lustre FID2PATH ioctl (#331829)

This is a modified version of a patch provided by Frank Zago (fzago@cray.com).


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@14233
---

diff --git a/coregrind/m_syswrap/syswrap-linux.c b/coregrind/m_syswrap/syswrap-linux.c
index 20b6d0e1ce..619a096104 100644
--- a/coregrind/m_syswrap/syswrap-linux.c
+++ b/coregrind/m_syswrap/syswrap-linux.c
@@ -7069,6 +7069,12 @@ PRE(sys_ioctl)
    }
 #endif
 
+   /* To do: figure out which software layer extends the sign of 'request' */
+   case VKI_OBD_IOC_FID2PATH:
+      PRE_MEM_READ("VKI_OBD_IOC_FID2PATH(args)", ARG3,
+                   sizeof(struct vki_getinfo_fid2path));
+      break;
+
    default:
       /* EVIOC* are variable length and return size written on success */
       switch (ARG2 & ~(_VKI_IOC_SIZEMASK << _VKI_IOC_SIZESHIFT)) {
@@ -8358,6 +8364,13 @@ POST(sys_ioctl)
       break;
 #endif
 
+   /* To do: figure out which software layer extends the sign of 'request' */
+   case VKI_OBD_IOC_FID2PATH: {
+       struct vki_getinfo_fid2path *args = (void *)(ARG3);
+       POST_MEM_WRITE((Addr)args->gf_path, args->gf_pathlen);
+      }
+      break;
+
    default:
       /* EVIOC* are variable length and return size written on success */
       switch (ARG2 & ~(_VKI_IOC_SIZEMASK << _VKI_IOC_SIZESHIFT)) {
diff --git a/include/vki/vki-linux.h b/include/vki/vki-linux.h
index 6043842f86..f4e8669980 100644
--- a/include/vki/vki-linux.h
+++ b/include/vki/vki-linux.h
@@ -3420,6 +3420,40 @@ struct vki_ethtool_ts_info {
 #define VKI_ETHTOOL_SCHANNELS	0x0000003d /* Set no of channels */
 #define VKI_ETHTOOL_GET_TS_INFO	0x00000041 /* Get time stamping and PHC info */
 
+//----------------------------------------------------------------------
+// From drivers/staging/lustre/lustre/include/lustre/lustre_user.h
+//----------------------------------------------------------------------
+
+struct vki_lu_fid {
+	__vki_u64	f_seq;
+	__vki_u32	f_oid;
+	__vki_u32	f_ver;
+};
+
+//----------------------------------------------------------------------
+// From drivers/staging/lustre/lustre/include/lustre/lustre_idl.h
+//----------------------------------------------------------------------
+
+struct vki_getinfo_fid2path {
+	struct vki_lu_fid	gf_fid;
+	__vki_u64		gf_recno;
+	__vki_u32		gf_linkno;
+	__vki_u32		gf_pathlen;
+	char			gf_path[0];
+} __attribute__((packed));
+
+//----------------------------------------------------------------------
+// From drivers/staging/lustre/lustre/include/linux/lustre_lib.h
+//----------------------------------------------------------------------
+
+#define OBD_IOC_DATA_TYPE               long
+
+//----------------------------------------------------------------------
+// From drivers/staging/lustre/lustre/include/lustre_lib.h
+//----------------------------------------------------------------------
+
+#define VKI_OBD_IOC_FID2PATH            _VKI_IOWR ('f', 150, OBD_IOC_DATA_TYPE)
+
 #endif // __VKI_LINUX_H
 
 /*--------------------------------------------------------------------*/