From 68e9c0e73b1466b7e43c77a75cd38913afcfcafe Mon Sep 17 00:00:00 2001
From: Brandon Potter <brandon.potter@amd.com>
Date: Thu, 15 Dec 2016 13:16:03 -0500
Subject: syscall_emul: add support for x86 statfs system calls

---
 src/sim/syscall_emul.hh | 32 ++++++++++++++++++++++++++++++--
 1 file changed, 30 insertions(+), 2 deletions(-)

(limited to 'src/sim/syscall_emul.hh')

diff --git a/src/sim/syscall_emul.hh b/src/sim/syscall_emul.hh
index 53da9197b..bf7ec1ae7 100644
--- a/src/sim/syscall_emul.hh
+++ b/src/sim/syscall_emul.hh
@@ -62,6 +62,7 @@
 #include <fcntl.h>
 #include <sys/mman.h>
 #include <sys/stat.h>
+#include <sys/statfs.h>
 #include <sys/time.h>
 #include <sys/uio.h>
 #include <unistd.h>
@@ -451,6 +452,7 @@ getElapsedTimeNano(T1 &sec, T2 &nsec)
 //
 //////////////////////////////////////////////////////////////////////
 
+    typedef struct statfs hst_statfs;
 #if NO_STAT64
     typedef struct stat hst_stat;
     typedef struct stat hst_stat64;
@@ -556,6 +558,32 @@ copyOutStat64Buf(SETranslatingPortProxy &mem, Addr addr,
     tgt.copyOut(mem);
 }
 
+template <class OS>
+static void
+copyOutStatfsBuf(SETranslatingPortProxy &mem, Addr addr,
+                 hst_statfs *host)
+{
+    TypedBufferArg<typename OS::tgt_statfs> tgt(addr);
+
+#if defined(__OpenBSD__) || defined(__APPLE__) || defined(__FreeBSD__)
+    tgt->f_type = 0;
+#else
+    tgt->f_type = TheISA::htog(host->f_type);
+#endif
+    tgt->f_bsize = TheISA::htog(host->f_bsize);
+    tgt->f_blocks = TheISA::htog(host->f_blocks);
+    tgt->f_bfree = TheISA::htog(host->f_bfree);
+    tgt->f_bavail = TheISA::htog(host->f_bavail);
+    tgt->f_files = TheISA::htog(host->f_files);
+    tgt->f_ffree = TheISA::htog(host->f_ffree);
+    memcpy(&tgt->f_fsid, &host->f_fsid, sizeof(host->f_fsid));
+    tgt->f_namelen = TheISA::htog(host->f_namelen);
+    tgt->f_frsize = TheISA::htog(host->f_frsize);
+    memcpy(&tgt->f_spare, &host->f_spare, sizeof(host->f_spare));
+
+    tgt.copyOut(mem);
+}
+
 /// Target ioctl() handler.  For the most part, programs call ioctl()
 /// only to find out if their stdout is a tty, to determine whether to
 /// do line or block buffering.  We always claim that output fds are
@@ -1156,7 +1184,7 @@ statfsFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
     if (result < 0)
         return -errno;
 
-    OS::copyOutStatfsBuf(tc->getMemProxy(), bufPtr, &hostBuf);
+    copyOutStatfsBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf);
 
     return 0;
 }
@@ -1182,7 +1210,7 @@ fstatfsFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
     if (result < 0)
         return -errno;
 
-    OS::copyOutStatfsBuf(tc->getMemProxy(), bufPtr, &hostBuf);
+    copyOutStatfsBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf);
 
     return 0;
 }
-- 
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