enable nanosecond stat support for everyone

Fill out the stat structure so that the nanosecond resolution support is
always available.  There is a small code size increase for a few ports
(three additional assignments in xstatconv), but otherwise everything
should remain the same.

While we're here, punt __old_kernel_stat from the few headers that still
define it as it is unused in uClibc and causes compile errors after these
nanosecond changes.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>

2 files changed, 41 insertions, 18 deletions

diff --git a/libc/sysdeps/linux/nios2/bits/kernel_stat.h b/libc/sysdeps/linux/nios2/bits/kernel_stat.h
index 9be9d115d..2b432cf52 100644
--- a/libc/sysdeps/linux/nios2/bits/kernel_stat.h
+++ b/libc/sysdeps/linux/nios2/bits/kernel_stat.h
@@ -22,12 +22,9 @@ struct kernel_stat {
 	unsigned long  st_size;
 	unsigned long  st_blksize;
 	unsigned long  st_blocks;
-	unsigned long  st_atime;
-	unsigned long  __unused1;
-	unsigned long  st_mtime;
-	unsigned long  __unused2;
-	unsigned long  st_ctime;
-	unsigned long  __unused3;
+	struct timespec st_atim;
+	struct timespec st_mtim;
+	struct timespec st_ctim;
 	unsigned long  __unused4;
 	unsigned long  __unused5;
 };
@@ -47,12 +44,9 @@ struct kernel_stat64 {
 	unsigned long	st_blksize;
 	unsigned long	st_blocks;	/* Number 512-byte blocks allocated. */
 	unsigned long	__pad4;		/* future possible st_blocks high bits */
-	unsigned long	st_atime;
-	unsigned long	__pad5;
-	unsigned long	st_mtime;
-	unsigned long	__pad6;
-	unsigned long	st_ctime;
-	unsigned long	__pad7;		/* will be high 32 bits of ctime someday */
+	struct timespec	st_atim;
+	struct timespec	st_mtim;
+	struct timespec	st_ctim;
 	unsigned long long	st_ino;
 };
 
diff --git a/libc/sysdeps/linux/nios2/bits/stat.h b/libc/sysdeps/linux/nios2/bits/stat.h
index f446a91db..c1eee0658 100644
--- a/libc/sysdeps/linux/nios2/bits/stat.h
+++ b/libc/sysdeps/linux/nios2/bits/stat.h
@@ -60,12 +60,27 @@ struct stat
 #else
     __blkcnt64_t st_blocks;		/* Number 512-byte blocks allocated. */
 #endif
+#ifdef __USE_MISC
+    /* Nanosecond resolution timestamps are stored in a format
+       equivalent to 'struct timespec'.  This is the type used
+       whenever possible but the Unix namespace rules do not allow the
+       identifier 'timespec' to appear in the <sys/stat.h> header.
+       Therefore we have to handle the use of this header in strictly
+       standard-compliant sources special.  */
+    struct timespec st_atim;		/* Time of last access.  */
+    struct timespec st_mtim;		/* Time of last modification.  */
+    struct timespec st_ctim;		/* Time of last status change.  */
+# define st_atime st_atim.tv_sec	/* Backward compatibility.  */
+# define st_mtime st_mtim.tv_sec
+# define st_ctime st_ctim.tv_sec
+#else
     __time_t st_atime;			/* Time of last access.  */
-    unsigned long int __unused1;
+    unsigned long int st_atimensec;	/* Nscecs of last access.  */
     __time_t st_mtime;			/* Time of last modification.  */
-    unsigned long int __unused2;
+    unsigned long int st_mtimensec;	/* Nsecs of last modification.  */
     __time_t st_ctime;			/* Time of last status change.  */
-    unsigned long int __unused3;
+    unsigned long int st_ctimensec;	/* Nsecs of last status change.  */
+#endif
 #ifndef __USE_FILE_OFFSET64
     unsigned long int __unused4;
     unsigned long int __unused5;
@@ -91,12 +106,24 @@ struct stat64
     __blksize_t st_blksize;		/* Optimal block size for I/O.  */
 
     __blkcnt64_t st_blocks;		/* Number 512-byte blocks allocated. */
+#ifdef __USE_MISC
+    /* Nanosecond resolution timestamps are stored in a format
+       equivalent to 'struct timespec'.  This is the type used
+       whenever possible but the Unix namespace rules do not allow the
+       identifier 'timespec' to appear in the <sys/stat.h> header.
+       Therefore we have to handle the use of this header in strictly
+       standard-compliant sources special.  */
+    struct timespec st_atim;		/* Time of last access.  */
+    struct timespec st_mtim;		/* Time of last modification.  */
+    struct timespec st_ctim;		/* Time of last status change.  */
+#else
     __time_t st_atime;			/* Time of last access.  */
-    unsigned long int __unused1;
+    unsigned long int st_atimensec;	/* Nscecs of last access.  */
     __time_t st_mtime;			/* Time of last modification.  */
-    unsigned long int __unused2;
+    unsigned long int st_mtimensec;	/* Nsecs of last modification.  */
     __time_t st_ctime;			/* Time of last status change.  */
-    unsigned long int __unused3;
+    unsigned long int st_ctimensec;	/* Nsecs of last status change.  */
+#endif
     __ino64_t st_ino;			/* File serial number.		*/
   };
 #endif
@@ -104,6 +131,8 @@ struct stat64
 /* Tell code we have these members.  */
 #define	_STATBUF_ST_BLKSIZE
 #define _STATBUF_ST_RDEV
+/* Nanosecond resolution time values are supported.  */
+#define _STATBUF_ST_NSEC
 
 /* Encoding of the file mode.  */