fork.2, read.2, sendfile.2, splice.2, write.2, aio_read.3, aio_write.3, proc.5: Wording fix: "current file offset" ==> "file offset"

"File offset" is the preferred POSIX terminology.

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

man2/fork.2

@@ -175,7 +175,7 @@ open file description (see
 .BR open (2))
 as the corresponding file descriptor in the parent.
 This means that the two file descriptors share open file status flags,
-current file offset,
+file offset,
 and signal-driven I/O attributes (see the description of
 .B F_SETOWN
 and

man2/read.2

@@ -51,9 +51,9 @@ into the buffer starting at
 .IR buf .
 
 On files that support seeking,
-the read operation commences at the current file offset,
+the read operation commences at the file offset,
 and the file offset is incremented by the number of bytes read.
-If the current file offset is at or past the end of file,
+If the file offset is at or past the end of file,
 no bytes are read, and
 .BR read ()
 returns zero.
@@ -140,7 +140,7 @@ flag, and either the address specified in
 .IR buf ,
 the value specified in
 .IR count ,
-or the current file offset is not suitably aligned.
+or the file offset is not suitably aligned.
 .TP
 .B EINVAL
 .I fd

man2/sendfile.2

@@ -75,9 +75,9 @@ If
 .I offset
 is not NULL, then
 .BR sendfile ()
-does not modify the current file offset of
+does not modify the file offset of
 .IR in_fd ;
-otherwise the current file offset is adjusted to reflect
+otherwise the file offset is adjusted to reflect
 the number of bytes read from
 .IR in_fd .
 
@@ -85,7 +85,7 @@ If
 .I offset
 is NULL, then data will be read from
 .IR in_fd
-starting at the current file offset,
+starting at the file offset,
 and the file offset will be updated by the call.
 
 .I count

man2/splice.2

@@ -65,8 +65,8 @@ does not refer to a pipe and
 .I off_in
 is NULL, then bytes are read from
 .I fd_in
-starting from the current file offset,
-and the current file offset is adjusted appropriately.
+starting from the file offset,
+and the file offset is adjusted appropriately.
 .IP *
 If
 .I fd_in
@@ -77,7 +77,7 @@ is not NULL, then
 must point to a buffer which specifies the starting
 offset from which bytes will be read from
 .IR fd_in ;
-in this case, the current file offset of
+in this case, the file offset of
 .I fd_in
 is not changed.
 .PP

man2/write.2

@@ -69,7 +69,7 @@ bytes.
 For a seekable file (i.e., one to which
 .BR lseek (2)
 may be applied, for example, a regular file)
-writing takes place at the current file offset,
+writing takes place at the file offset,
 and the file offset is incremented by
 the number of bytes actually written.
 If the file was
@@ -170,7 +170,7 @@ flag, and either the address specified in
 .IR buf ,
 the value specified in
 .IR count ,
-or the current file offset is not suitably aligned.
+or the file offset is not suitably aligned.
 .TP
 .B EIO
 A low-level I/O error occurred while modifying the inode.

man3/aio_read.3

@@ -54,11 +54,11 @@ for a description of the
 .I aiocb
 structure.)
 .LP
-The data is read starting at the absolute file offset
+The data is read starting at the absolute position
 .IR aiocbp\->aio_offset ,
-regardless of the current file offset.
+regardless of the file offset.
 After the call,
-the value of the current file offset is unspecified.
+the value of the file offset is unspecified.
 .LP
 The "asynchronous" means that this call returns as soon as the
 request has been enqueued; the read may or may not have completed

man3/aio_write.3

@@ -57,15 +57,15 @@ structure.)
 If
 .B O_APPEND
 is not set, the data is written starting at the
-absolute file offset
+absolute position
 .IR aiocbp\->aio_offset ,
-regardless of the current file offset.
+regardless of the file offset.
 If
 .B O_APPEND
 is set, data is written at the end of the file in the same order as
 .BR aio_write ()
 calls are made.
-After the call, the value of the current file offset is unspecified.
+After the call, the value of the file offset is unspecified.
 .LP
 The "asynchronous" means that this call returns as soon as the
 request has been enqueued; the write may or may not have completed

man5/proc.5

@@ -634,7 +634,7 @@ mnt_id: 21
 
 The
 .I pos
-field is a decimal number showing the current file offset.
+field is a decimal number showing the file offset.
 The
 .I flags
 field is an octal number that displays the