From: Volker Lendecke <vl@samba.org>
Date: Fri, 23 Jan 2026 17:34:57 +0000 (+0100)
Subject: lib: Add statvfs2fsusage
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=85685fbd7e3f5fda2577fbbabee8e2caa4977e75;p=thirdparty%2Fsamba.git

lib: Add statvfs2fsusage

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Anoop C S <anoopcs@samba.org>
---

diff --git a/lib/util/statvfs.c b/lib/util/statvfs.c
index 91a7152c66a..40149c3407b 100644
--- a/lib/util/statvfs.c
+++ b/lib/util/statvfs.c
@@ -255,3 +255,32 @@ int sys_fstatvfs(int fd, struct vfs_statvfs_struct *statbuf)
 #endif /* EOPNOTSUPP */
 #endif /* LINUX */
 }
+
+/*
+ * Return the number of TOSIZE-byte blocks used by BLOCKS
+ * FROMSIZE-byte blocks, rounding away from zero.
+ */
+static uint64_t adjust_blocks(uint64_t blocks, uint64_t fromsize)
+{
+	if (fromsize == 512) {
+		return blocks;
+	}
+
+	if (fromsize > 512) {
+		return blocks * (fromsize / 512);
+	}
+
+	if (fromsize == 0) {
+		fromsize = 512;
+	}
+
+	return (blocks + 1) / (512 / fromsize);
+}
+
+void statvfs2fsusage(const struct vfs_statvfs_struct *statbuf,
+		     uint64_t *dfree,
+		     uint64_t *dsize)
+{
+	*dfree = adjust_blocks(statbuf->UserBlocksAvail, statbuf->BlockSize);
+	*dsize = adjust_blocks(statbuf->TotalBlocks, statbuf->BlockSize);
+}
diff --git a/lib/util/statvfs.h b/lib/util/statvfs.h
index 3309f83dbda..301cbc25873 100644
--- a/lib/util/statvfs.h
+++ b/lib/util/statvfs.h
@@ -54,5 +54,8 @@ struct vfs_statvfs_struct {
 
 int sys_statvfs(const char *path, struct vfs_statvfs_struct *statbuf);
 int sys_fstatvfs(int fd, struct vfs_statvfs_struct *statbuf);
+void statvfs2fsusage(const struct vfs_statvfs_struct *statbuf,
+		     uint64_t *dfree,
+		     uint64_t *dsize);
 
 #endif