X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=lib%2Ffsusage.c;h=660e33c120418a1ce339138982766aad36057285;hb=692c4b6ea764fd34a53142b53c53a2d54b33ae6a;hp=2c1c7f0e24b50ce6218bfd5c609d613637a20041;hpb=47a70ed9f7a874deda74aff3c33fc61376775860;p=gnulib.git

diff --git a/lib/fsusage.c b/lib/fsusage.c
index 2c1c7f0e2..660e33c12 100644
--- a/lib/fsusage.c
+++ b/lib/fsusage.c
@@ -73,7 +73,7 @@ adjust_blocks (blocks, fromsize, tosize)
     abort ();
   if (fromsize <= 0)
     return -1;
-								    
+
   if (fromsize == tosize)	/* E.g., from 512 to 512.  */
     return blocks;
   else if (fromsize > tosize)	/* E.g., from 2048 to 512.  */
@@ -144,6 +144,21 @@ get_fs_usage (path, disk, fsp)
 
   if (statfs (path, &fsd) < 0)
     return -1;
+
+#ifdef STATFS_TRUNCATES_BLOCK_COUNTS
+  /* In SunOS 4.1.2, 4.1.3, and 4.1.3_U1, the block counts in the
+     struct statfs are truncated to 2GB.  These conditions detect that
+     truncation, presumably without botching the 4.1.1 case, in which
+     the values are not truncated.  The correct counts are stored in
+     undocumented spare fields.  */
+  if (fsd.f_blocks == 0x1fffff && fsd.f_spare[0] > 0)
+    {
+      fsd.f_blocks = fsd.f_spare[0];
+      fsd.f_bfree = fsd.f_spare[1];
+      fsd.f_bavail = fsd.f_spare[2];
+    }
+#endif /* STATFS_TRUNCATES_BLOCK_COUNTS */
+
 #define CONVERT_BLOCKS(b) adjust_blocks ((b), fsd.f_bsize, 512)
 #endif