sync with upstream via psm

4 files changed, 84 insertions, 6 deletions

diff --git a/libc/sysdeps/linux/x86_64/bits/fcntl.h b/libc/sysdeps/linux/x86_64/bits/fcntl.h
index 712007c36..f69bcf60e 100644
--- a/libc/sysdeps/linux/x86_64/bits/fcntl.h
+++ b/libc/sysdeps/linux/x86_64/bits/fcntl.h
@@ -21,9 +21,12 @@
 # error "Never use <bits/fcntl.h> directly; include <fcntl.h> instead."
 #endif
 
-
 #include <sys/types.h>
 #include <bits/wordsize.h>
+#ifdef __USE_GNU
+# include <bits/uio.h>
+#endif
+
 
 /* open/fcntl - O_SYNC is only implemented on blocks devices and on files
    located on an ext2 file system */
@@ -194,16 +197,45 @@ struct flock64
 # define POSIX_FADV_NOREUSE	5 /* Data will be accessed once.  */
 #endif
 
-/* Linux-specific operations for posix_fadvise.  */
+
 #ifdef __USE_GNU
-# define LINUX_FADV_ASYNC_WRITE	32 /* Start writeout on range.  */
-# define LINUX_FADV_WRITE_WAIT	33 /* Wait upon writeout to range.  */
+# define SYNC_FILE_RANGE_WAIT_BEFORE	1 /* Wait upon writeout of all pages
+					     in the range before performing the
+					     write.  */
+# define SYNC_FILE_RANGE_WRITE		2 /* Initiate writeout of all those
+					     dirty pages in the range which are
+					     not presently under writeback.  */
+# define SYNC_FILE_RANGE_WAIT_AFTER	4 /* Wait upon writeout of all pages in
+					     the range after performing the
+					     write.  */
 #endif
 
 __BEGIN_DECLS
 
+#if 0 /*def __USE_GNU*/
+
 /* Provide kernel hint to read ahead.  */
 extern ssize_t readahead (int __fd, __off64_t __offset, size_t __count)
     __THROW;
 
+
+/* Selective file content synch'ing.  */
+extern int sync_file_range (int __fd, __off64_t __from, __off64_t __to,
+			    unsigned int __flags);
+
+
+/* Splice address range into a pipe.  */
+extern int vmsplice (int __fdout, const struct iovec *__iov, size_t __count,
+		     unsigned int __flags);
+
+/* Splice two files together.  */
+extern int splice (int __fdin, int __fdout, size_t __len, unsigned int __flags)
+    __THROW;
+
+/* In-kernel implementation of tee for pipe buffers.  */
+extern int tee (int __fdin, int __fdout, size_t __len, unsigned int __flags)
+    __THROW;
+
+#endif
+
 __END_DECLS
diff --git a/libc/sysdeps/linux/x86_64/bits/mathdef.h b/libc/sysdeps/linux/x86_64/bits/mathdef.h
index 37665c209..b0567e4d4 100644
--- a/libc/sysdeps/linux/x86_64/bits/mathdef.h
+++ b/libc/sysdeps/linux/x86_64/bits/mathdef.h
@@ -23,14 +23,30 @@
 #if defined __USE_ISOC99 && defined _MATH_H && !defined _MATH_H_MATHDEF
 # define _MATH_H_MATHDEF	1
 
+# include <bits/wordsize.h>
+
+# if __WORDSIZE == 64 || (defined __FLT_EVAL_METHOD__ && __FLT_EVAL_METHOD__ == 0)
 /* The x86-64 architecture computes values with the precission of the
-   used type.  */
+   used type.  Similarly for -m32 -mfpmath=sse.  */
 typedef float float_t;		/* `float' expressions are evaluated as `float'.  */
 typedef double double_t;	/* `double' expressions are evaluated
 				   as `double'.  */
+# else
+/* The ix87 FPUs evaluate all values in the 80 bit floating-point format
+   which is also available for the user as `long double'.  Therefore we
+   define:  */
+typedef long double float_t;	/* `float' expressions are evaluated as
+				   `long double'.  */
+typedef long double double_t;	/* `double' expressions are evaluated as
+				   `long double'.  */
+# endif
 
 /* The values returned by `ilogb' for 0 and NaN respectively.  */
 # define FP_ILOGB0	(-2147483647 - 1)
 # define FP_ILOGBNAN	(-2147483647 - 1)
 
 #endif	/* ISO C99 */
+
+#if !defined __NO_LONG_DOUBLE_MATH && !defined __UCLIBC_HAS_LONG_DOUBLE_MATH__
+# define __NO_LONG_DOUBLE_MATH	1
+#endif
diff --git a/libc/sysdeps/linux/x86_64/bits/mman.h b/libc/sysdeps/linux/x86_64/bits/mman.h
index 880390055..535c9edcf 100644
--- a/libc/sysdeps/linux/x86_64/bits/mman.h
+++ b/libc/sysdeps/linux/x86_64/bits/mman.h
@@ -89,7 +89,7 @@
 # define MADV_SEQUENTIAL 2	/* Expect sequential page references.  */
 # define MADV_WILLNEED	 3	/* Will need these pages.  */
 # define MADV_DONTNEED	 4	/* Don't need these pages.  */
-# define MADV_REMOVE	 5	/* Remove these pages and resources.  */
+# define MADV_REMOVE	 9	/* Remove these pages and resources.  */
 # define MADV_DONTFORK	 10	/* Do not inherit across fork.  */
 # define MADV_DOFORK	 11	/* Do inherit across fork.  */
 #endif
diff --git a/libc/sysdeps/linux/x86_64/bits/stat.h b/libc/sysdeps/linux/x86_64/bits/stat.h
index ddc292a34..3a9c7740a 100644
--- a/libc/sysdeps/linux/x86_64/bits/stat.h
+++ b/libc/sysdeps/linux/x86_64/bits/stat.h
@@ -78,12 +78,27 @@ struct stat
 #else
     __blkcnt64_t st_blocks;		/* Number 512-byte blocks allocated. */
 #endif
+#if 0 /*def __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 st_atimensec;	/* Nscecs of last access.  */
     __time_t st_mtime;			/* Time of last modification.  */
     unsigned long int st_mtimensec;	/* Nsecs of last modification.  */
     __time_t st_ctime;			/* Time of last status change.  */
     unsigned long int st_ctimensec;	/* Nsecs of last status change.  */
+#endif
 #if __WORDSIZE == 64
     long int __unused[3];
 #else
@@ -124,12 +139,27 @@ struct stat64
 #endif
     __blksize_t st_blksize;	/* Optimal block size for I/O.  */
     __blkcnt64_t st_blocks;	/* Nr. 512-byte blocks allocated.  */
+#if 0 /*def __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 st_atimensec;	/* Nscecs of last access.  */
     __time_t st_mtime;			/* Time of last modification.  */
     unsigned long int st_mtimensec;	/* Nsecs of last modification.  */
     __time_t st_ctime;			/* Time of last status change.  */
     unsigned long int st_ctimensec;	/* Nsecs of last status change.  */
+#endif
 #if __WORDSIZE == 64
     long int __unused[3];
 #else