Patchwork [review] Define __STATFS_MATCHES_STATFS64

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Submitter Simon Marchi (Code Review)
Date Oct. 24, 2019, 7:23 p.m.
Message ID <gerrit.1571944987000.I3d07f40852bd591ce7b9106dd0bac5088c6e078b@gnutoolchain-gerrit.osci.io>
Download mbox | patch
Permalink /patch/35290/
State New
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Simon Marchi (Code Review) - Oct. 24, 2019, 7:23 p.m.
Change URL: https://gnutoolchain-gerrit.osci.io/r/c/glibc/+/302
......................................................................

Define __STATFS_MATCHES_STATFS64

Add a new macro __STATFS_MATCHES_STATFS64 that specifies if fsblkcnt_t
matches fsblkcnt64_t and if fsfilcnt_t matches fsfilcnt64_t.

As we don't have the padding we also need to update the overflow checker
to not access the undefined members.

Change-Id: I3d07f40852bd591ce7b9106dd0bac5088c6e078b
---
M bits/typesizes.h
M sysdeps/mach/hurd/bits/typesizes.h
M sysdeps/unix/sysv/linux/alpha/bits/typesizes.h
M sysdeps/unix/sysv/linux/generic/bits/statfs.h
M sysdeps/unix/sysv/linux/generic/bits/typesizes.h
M sysdeps/unix/sysv/linux/generic/wordsize-32/overflow.h
M sysdeps/unix/sysv/linux/s390/bits/typesizes.h
M sysdeps/unix/sysv/linux/sparc/bits/typesizes.h
M sysdeps/unix/sysv/linux/x86/bits/typesizes.h
9 files changed, 37 insertions(+), 2 deletions(-)
Simon Marchi (Code Review) - Oct. 24, 2019, 7:26 p.m.
Carlos O'Donell has abandoned this change. ( https://gnutoolchain-gerrit.osci.io/r/c/glibc/+/302 )

Change subject: Define __STATFS_MATCHES_STATFS64
......................................................................


Abandoned

Already on master.

Patch

diff --git a/bits/typesizes.h b/bits/typesizes.h
index 779945b..ae6eff5 100644
--- a/bits/typesizes.h
+++ b/bits/typesizes.h
@@ -72,8 +72,13 @@ 
 
 /* And for rlim_t and rlim64_t.  */
 # define __RLIM_T_MATCHES_RLIM64_T	1
+
+/* And for fsblkcnt_t, fsblkcnt64_t, fsfilcnt_t and fsfilcnt64_t.  */
+# define __STATFS_MATCHES_STATFS64  1
 #else
 # define __RLIM_T_MATCHES_RLIM64_T	0
+
+# define __STATFS_MATCHES_STATFS64  0
 #endif
 
 /* Number of descriptors that can fit in an `fd_set'.  */
diff --git a/sysdeps/mach/hurd/bits/typesizes.h b/sysdeps/mach/hurd/bits/typesizes.h
index c30de12..3600137 100644
--- a/sysdeps/mach/hurd/bits/typesizes.h
+++ b/sysdeps/mach/hurd/bits/typesizes.h
@@ -64,5 +64,9 @@ 
 /* Number of descriptors that can fit in an `fd_set'.  */
 #define	__FD_SETSIZE		256
 
+/* Tell the libc code that fsblkcnt_t, fsblkcnt64_t, fsfilcnt_t and
+   fsfilcnt64_t are not the same type for all ABI purposes.  */
+# define __STATFS_MATCHES_STATFS64  0
+
 
 #endif /* bits/typesizes.h */
diff --git a/sysdeps/unix/sysv/linux/alpha/bits/typesizes.h b/sysdeps/unix/sysv/linux/alpha/bits/typesizes.h
index 2023115..687b4df 100644
--- a/sysdeps/unix/sysv/linux/alpha/bits/typesizes.h
+++ b/sysdeps/unix/sysv/linux/alpha/bits/typesizes.h
@@ -69,6 +69,9 @@ 
 /* And for __rlim_t and __rlim64_t.  */
 #define __RLIM_T_MATCHES_RLIM64_T 1
 
+/* Not for fsblkcnt_t, fsblkcnt64_t, fsfilcnt_t and fsfilcnt64_t.  */
+# define __STATFS_MATCHES_STATFS64  0
+
 /* Number of descriptors that can fit in an `fd_set'.  */
 #define	__FD_SETSIZE		1024
 
diff --git a/sysdeps/unix/sysv/linux/generic/bits/statfs.h b/sysdeps/unix/sysv/linux/generic/bits/statfs.h
index c4069ab..e622daf 100644
--- a/sysdeps/unix/sysv/linux/generic/bits/statfs.h
+++ b/sysdeps/unix/sysv/linux/generic/bits/statfs.h
@@ -34,7 +34,7 @@ 
 
 #if defined __USE_FILE_OFFSET64
 # define __field64(type, type64, name) type64 name
-#elif __WORDSIZE == 64
+#elif __WORDSIZE == 64 || __STATFS_MATCHES_STATFS64
 # define __field64(type, type64, name) type name
 #elif __BYTE_ORDER == __LITTLE_ENDIAN
 # define __field64(type, type64, name) \
diff --git a/sysdeps/unix/sysv/linux/generic/bits/typesizes.h b/sysdeps/unix/sysv/linux/generic/bits/typesizes.h
index 05e3cfe..0c8c2e0 100644
--- a/sysdeps/unix/sysv/linux/generic/bits/typesizes.h
+++ b/sysdeps/unix/sysv/linux/generic/bits/typesizes.h
@@ -73,10 +73,14 @@ 
 
 /* And for __rlim_t and __rlim64_t.  */
 # define __RLIM_T_MATCHES_RLIM64_T	1
+
+/* And for fsblkcnt_t, fsblkcnt64_t, fsfilcnt_t and fsfilcnt64_t.  */
+# define __STATFS_MATCHES_STATFS64  1
 #else
 # define __RLIM_T_MATCHES_RLIM64_T	0
-#endif
 
+# define __STATFS_MATCHES_STATFS64  0
+#endif
 /* Number of descriptors that can fit in an `fd_set'.  */
 #define	__FD_SETSIZE		1024
 
diff --git a/sysdeps/unix/sysv/linux/generic/wordsize-32/overflow.h b/sysdeps/unix/sysv/linux/generic/wordsize-32/overflow.h
index 66546b0..f63dbfa 100644
--- a/sysdeps/unix/sysv/linux/generic/wordsize-32/overflow.h
+++ b/sysdeps/unix/sysv/linux/generic/wordsize-32/overflow.h
@@ -51,6 +51,9 @@ 
 /* Note that f_files and f_ffree may validly be a sign-extended -1.  */
 static inline int statfs_overflow (struct statfs *buf)
 {
+#if __STATFS_MATCHES_STATFS64
+  return 0;
+#else
   if (buf->__f_blocks_pad == 0 && buf->__f_bfree_pad == 0
       && buf->__f_bavail_pad == 0
       && (buf->__f_files_pad == 0
@@ -61,4 +64,5 @@ 
 
   __set_errno (EOVERFLOW);
   return -1;
+#endif
 }
diff --git a/sysdeps/unix/sysv/linux/s390/bits/typesizes.h b/sysdeps/unix/sysv/linux/s390/bits/typesizes.h
index 94234f9..38034e3 100644
--- a/sysdeps/unix/sysv/linux/s390/bits/typesizes.h
+++ b/sysdeps/unix/sysv/linux/s390/bits/typesizes.h
@@ -78,8 +78,13 @@ 
 
 /* And for __rlim_t and __rlim64_t.  */
 # define __RLIM_T_MATCHES_RLIM64_T	1
+
+/* And for fsblkcnt_t, fsblkcnt64_t, fsfilcnt_t and fsfilcnt64_t.  */
+# define __STATFS_MATCHES_STATFS64  1
 #else
 # define __RLIM_T_MATCHES_RLIM64_T	0
+
+# define __STATFS_MATCHES_STATFS64  0
 #endif
 
 /* Number of descriptors that can fit in an `fd_set'.  */
diff --git a/sysdeps/unix/sysv/linux/sparc/bits/typesizes.h b/sysdeps/unix/sysv/linux/sparc/bits/typesizes.h
index 037f530..c93f428 100644
--- a/sysdeps/unix/sysv/linux/sparc/bits/typesizes.h
+++ b/sysdeps/unix/sysv/linux/sparc/bits/typesizes.h
@@ -72,8 +72,13 @@ 
 
 /* And for __rlim_t and __rlim64_t.  */
 # define __RLIM_T_MATCHES_RLIM64_T	1
+
+/* And for fsblkcnt_t, fsblkcnt64_t, fsfilcnt_t and fsfilcnt64_t.  */
+# define __STATFS_MATCHES_STATFS64  1
 #else
 # define __RLIM_T_MATCHES_RLIM64_T	0
+
+# define __STATFS_MATCHES_STATFS64  0
 #endif
 
 /* Number of descriptors that can fit in an `fd_set'.  */
diff --git a/sysdeps/unix/sysv/linux/x86/bits/typesizes.h b/sysdeps/unix/sysv/linux/x86/bits/typesizes.h
index 012651b..168990f 100644
--- a/sysdeps/unix/sysv/linux/x86/bits/typesizes.h
+++ b/sysdeps/unix/sysv/linux/x86/bits/typesizes.h
@@ -84,8 +84,13 @@ 
 
 /* And for __rlim_t and __rlim64_t.  */
 # define __RLIM_T_MATCHES_RLIM64_T	1
+
+/* And for fsblkcnt_t, fsblkcnt64_t, fsfilcnt_t and fsfilcnt64_t.  */
+# define __STATFS_MATCHES_STATFS64  1
 #else
 # define __RLIM_T_MATCHES_RLIM64_T	0
+
+# define __STATFS_MATCHES_STATFS64  0
 #endif
 
 /* Number of descriptors that can fit in an `fd_set'.  */