[libvirt] [PATCH 1/3] virfile: Provide stub for virFileInData
Some older systems (such as RHEL6) lack SEEK_HOLE and SEEK_DATA
which virFileInData relies on. Provide a stub for these systems.
Signed-off-by: Michal Privoznik <mprivozn(a)redhat.com>
---
configure.ac | 5 +++++
src/util/virfile.c | 15 +++++++++++++++
2 files changed, 20 insertions(+)
diff --git a/configure.ac b/configure.ac
index f20b9ea4d..2e6051354 100644
--- a/configure.ac
+++ b/configure.ac
@@ -352,6 +352,11 @@ AC_CHECK_DECLS([ETH_FLAG_TXVLAN, ETH_FLAG_NTUPLE, ETH_FLAG_RXHASH,
ETH_FLAG_LRO,
[], [], [[#include <linux/ethtool.h>
]])
+AC_CHECK_DECLS([SEEK_HOLE], [], [],
+ [#include <sys/types.h>
+ #include <unistd.h>])
+
+
dnl Our only use of libtasn1.h is in the testsuite, and can be skipped
dnl if the header is not present. Assume -ltasn1 is present if the
dnl header could be found.
diff --git a/src/util/virfile.c b/src/util/virfile.c
index 2f4bc42b6..b7645fbfc 100644
--- a/src/util/virfile.c
+++ b/src/util/virfile.c
@@ -3798,6 +3798,7 @@ virFileComparePaths(const char *p1, const char *p2)
}
+#if HAVE_DECL_SEEK_HOLE
/**
* virFileInData:
* @fd: file to check
@@ -3904,6 +3905,20 @@ virFileInData(int fd,
return ret;
}
+#else /* !HAVE_DECL_SEEK_HOLE */
+
+int
+virFileInData(int fd ATTRIBUTE_UNUSED,
+ int *inData ATTRIBUTE_UNUSED,
+ long long *length ATTRIBUTE_UNUSED)
+{
+ virReportSystemError(ENOSYS, "%s",
+ _("sparse files not supported"));
+ return -1;
+}
+
+#endif /* !HAVE_DECL_SEEK_HOLE */
+
/**
* virFileReadValueInt:
--
2.13.0