From: Daniel P. Berrange <berrange@redhat.com>
Date: Wed, 8 Feb 2012 14:03:29 +0000 (+0000)
Subject: Replace truncate() with ftruncate()
X-Git-Url: http://xenbits.xensource.com/gitweb?a=commitdiff_plain;h=bc6bb3a3e8c6cad0bc9cb72f3e549eeff1de2f99;p=libvirt.git

Replace truncate() with ftruncate()

Mingw32 does not have any truncate() API defined, but it does
have ftruncate(). So replace use of the former with the latter
---

diff --git a/src/util/storage_file.c b/src/util/storage_file.c
index 8260adbd1f..a8661e3b79 100644
--- a/src/util/storage_file.c
+++ b/src/util/storage_file.c
@@ -939,12 +939,29 @@ virStorageFileFreeMetadata(virStorageFileMetadata *meta)
 int
 virStorageFileResize(const char *path, unsigned long long capacity)
 {
-    if (truncate(path, capacity) < 0) {
+    int fd = -1;
+    int ret = -1;
+
+    if ((fd = open(path, O_RDWR)) < 0) {
+        virReportSystemError(errno, _("Unable to open '%s'"), path);
+        goto cleanup;
+    }
+
+    if (ftruncate(fd, capacity) < 0) {
         virReportSystemError(errno, _("Failed to truncate file '%s'"), path);
-        return -1;
+        goto cleanup;
     }
 
-    return 0;
+    if (VIR_CLOSE(fd) < 0) {
+        virReportSystemError(errno, _("Unable to save '%s'"), path);
+        goto cleanup;
+    }
+
+    ret = 0;
+
+cleanup:
+    VIR_FORCE_CLOSE(fd);
+    return ret;
 }
 
 #ifdef __linux__