From: Timo Sirainen <tss@iki.fi>
Date: Thu, 21 Oct 2010 21:56:02 +0000 (+0100)
Subject: file_preallocate(): Added support for OS X.
X-Git-Tag: 2.0.7~58
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ed7dbb42dd41a237b2ae737eb59482c640fd6f77;p=thirdparty%2Fdovecot%2Fcore.git

file_preallocate(): Added support for OS X.
---

diff --git a/src/lib/file-set-size.c b/src/lib/file-set-size.c
index 8908cc25e3..c2370feda1 100644
--- a/src/lib/file-set-size.c
+++ b/src/lib/file-set-size.c
@@ -88,6 +88,24 @@ int file_preallocate(int fd ATTR_UNUSED, off_t size ATTR_UNUSED)
 	if (fallocate(fd, FALLOC_FL_KEEP_SIZE, 0, size) < 0)
 		return errno == ENOSYS ? 0 : -1;
 	return 1;
+#elif defined (F_PREALLOCATE)
+	/* OSX */
+	fstore_t fs;
+
+	memset(&fs, 0, sizeof(fs));
+	fs.fst_flags = F_ALLOCATECONTIG;
+	fs.fst_posmode = F_PEOFPOSMODE;
+	fs.fst_offset = 0;
+	fs.fst_length = size;
+	fs.fst_bytesalloc = 0;
+	if (fcntl(fd, F_PREALLOCATE, &fs) < 0) {
+		if (errno == ENOSPC) {
+			/* can't allocate contiguous block. just forget it. */
+			return 0;
+		}
+		return -1;
+	}
+	return 0;
 #else
 	return 0;
 #endif