X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=lib%2Ffsusage.c;h=660e33c120418a1ce339138982766aad36057285;hb=6aae241f16ed2dbe57475cb4c8b3a5b1ca1e9699;hp=d60a4c6a73f7981ea7b3457fcd24720392e7d397;hpb=68eb0d909e6de636f9af9a621e34eeaafa5fbac9;p=gnulib.git

diff --git a/lib/fsusage.c b/lib/fsusage.c
index d60a4c6a7..660e33c12 100644
--- a/lib/fsusage.c
+++ b/lib/fsusage.c
@@ -16,59 +16,50 @@
    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
 
 #ifdef HAVE_CONFIG_H
-#if defined (CONFIG_BROKETS)
-/* We use <config.h> instead of "config.h" so that a compilation
-   using -I. -I$srcdir will use ./config.h rather than $srcdir/config.h
-   (which it would do because it found this file in $srcdir).  */
 #include <config.h>
-#else
-#include "config.h"
-#endif
 #endif
 
 #include <sys/types.h>
+#include <sys/stat.h>
 #include "fsusage.h"
-#include "safe-stat.h"
 
 int statfs ();
 
-#if defined (STAT_STATFS3_OSF1)	/* DEC Alpha running OSF/1 */
-#  include <sys/mount.h>
+#ifdef HAVE_SYS_PARAM_H
+#include <sys/param.h>
 #endif
 
-#if defined(STAT_STATFS2_BSIZE) && !defined(_IBMR2) /* 4.3BSD, SunOS 4, HP-UX, AIX PS/2.  */
-#include <sys/vfs.h>
+#ifdef HAVE_SYS_MOUNT_H
+#include <sys/mount.h>
 #endif
 
-#ifdef STAT_STATFS2_FSIZE	/* 4.4BSD.  */
-#include <sys/mount.h>
+#ifdef HAVE_SYS_VFS_H
+#include <sys/vfs.h>
 #endif
 
-#ifdef STAT_STATFS2_FS_DATA	/* Ultrix.  */
-#include <sys/param.h>
-#include <sys/mount.h>
+#ifdef HAVE_SYS_FILSYS_H
+#include <sys/filsys.h>		/* SVR2.  */
 #endif
 
-#ifdef STAT_READ		/* SVR2.  */
-#include <sys/param.h>
-#include <sys/filsys.h>
+#ifdef HAVE_FCNTL_H
 #include <fcntl.h>
 #endif
 
-#if defined(STAT_STATFS4) || (defined(_AIX) && defined(_IBMR2)) /* SVR3, Dynix, Irix, AIX RS6000.  */
+#ifdef HAVE_SYS_STATFS_H
 #include <sys/statfs.h>
 #endif
 
-#if defined(_AIX) && defined(_I386) /* AIX PS/2.  */
-#include <sys/stat.h>
+#ifdef HAVE_DUSTAT_H		/* AIX PS/2.  */
 #include <sys/dustat.h>
 #endif
 
-#ifdef STAT_STATVFS		/* SVR4.  */
+#ifdef HAVE_SYS_STATVFS_H	/* SVR4.  */
 #include <sys/statvfs.h>
 int statvfs ();
 #endif
 
+int safe_read ();
+
 /* Return the number of TOSIZE-byte blocks used by
    BLOCKS FROMSIZE-byte blocks, rounding away from zero.
    TOSIZE must be positive.  Return -1 if FROMSIZE is not positive.  */
@@ -82,7 +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.  */
@@ -123,7 +114,7 @@ get_fs_usage (path, disk, fsp)
   fsp->fsu_ffree = fsd.fd_req.gfree;
 #endif
 
-#ifdef STAT_READ		/* SVR2.  */
+#ifdef STAT_READ_FILSYS		/* SVR2.  */
 #ifndef SUPERBOFF
 #define SUPERBOFF (SUPERB * 512)
 #endif
@@ -134,7 +125,7 @@ get_fs_usage (path, disk, fsp)
   if (fd < 0)
     return -1;
   lseek (fd, (long) SUPERBOFF, 0);
-  if (read (fd, (char *) &fsd, sizeof fsd) != sizeof fsd)
+  if (safe_read (fd, (char *) &fsd, sizeof fsd) != sizeof fsd)
     {
       close (fd);
       return -1;
@@ -153,6 +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
 
@@ -164,7 +170,7 @@ get_fs_usage (path, disk, fsp)
 #define CONVERT_BLOCKS(b) adjust_blocks ((b), fsd.f_fsize, 512)
 #endif
 
-#ifdef STAT_STATFS4		/* SVR3, Dynix, Irix.  */
+#ifdef STAT_STATFS4		/* SVR3, Dynix, Irix, AIX.  */
   struct statfs fsd;
 
   if (statfs (path, &fsd, sizeof fsd, 0) < 0)
@@ -172,12 +178,16 @@ get_fs_usage (path, disk, fsp)
   /* Empirically, the block counts on most SVR3 and SVR3-derived
      systems seem to always be in terms of 512-byte blocks,
      no matter what value f_bsize has.  */
-#define CONVERT_BLOCKS(b) (b)
-#ifndef _SEQUENT_		/* _SEQUENT_ is DYNIX/ptx.  */
-#ifndef DOLPHIN			/* DOLPHIN 3.8.alfa/7.18 has f_bavail */
-#define f_bavail f_bfree
-#endif
-#endif
+# if _AIX
+#  define CONVERT_BLOCKS(b) adjust_blocks ((b), fsd.f_bsize, 512)
+# else
+#  define CONVERT_BLOCKS(b) (b)
+#  ifndef _SEQUENT_		/* _SEQUENT_ is DYNIX/ptx.  */
+#   ifndef DOLPHIN		/* DOLPHIN 3.8.alfa/7.18 has f_bavail */
+#    define f_bavail f_bfree
+#   endif
+#  endif
+# endif
 #endif
 
 #ifdef STAT_STATVFS		/* SVR4.  */
@@ -190,7 +200,7 @@ get_fs_usage (path, disk, fsp)
   adjust_blocks ((b), fsd.f_frsize ? fsd.f_frsize : fsd.f_bsize, 512)
 #endif
 
-#if !defined(STAT_STATFS2_FS_DATA) && !defined(STAT_READ) /* !Ultrix && !SVR2.  */
+#if !defined(STAT_STATFS2_FS_DATA) && !defined(STAT_READ_FILSYS) /* !Ultrix && !SVR2.  */
   fsp->fsu_blocks = CONVERT_BLOCKS (fsd.f_blocks);
   fsp->fsu_bfree = CONVERT_BLOCKS (fsd.f_bfree);
   fsp->fsu_bavail = CONVERT_BLOCKS (fsd.f_bavail);
@@ -212,7 +222,7 @@ statfs (path, fsb)
   struct stat stats;
   struct dustat fsd;
 
-  if (SAFE_STAT (path, &stats))
+  if (stat (path, &stats))
     return -1;
   if (dustat (stats.st_dev, 0, &fsd, sizeof (fsd)))
     return -1;