- bump the manpage's date (because of the next change);
- note that cp(1) does not preserve hard links (even with `-R'),
and refer to pax(1) there as well as in the `SEE ALSO' section
for such functionality (this change is based upon a similar note
in FreeBSD's version of the manpage);
- change a wording, for more overall consistency.
state of the stream. Change argument of the seek function to funopen() from
fpos_t to off_t. Make f{g,s}etpos() use the new fpos_t struct, while providing
backwards compatible entry points. Approved by releng@
char 160 in the input to csh, lead it to an infinite loop, because tcsh tables
counted this as a space character, but the word logic switch does not. Change
that character tables, so that this does not count as a spacing character
anymore, by syncing the table with the one from tcsh.
- error out when an unknown specifier is used. Do this in f_msgfmt(),
before dd(1) starts operation.
- allow buffer_write() to flush the internal buffer even when NULL is
passed as parameter.
Some whitespace fixes too.
output of the information summary returned by dd(1). This can be used
to specify messages in a more usable (or parseable) format like
human-readable values.
My intent is to re-use this for building image files and quick I/O
benchmarking.
Reviewed by tsutsui@ on tech-userlevel. See also
http://mail-index.netbsd.org/tech-userlevel/2010/12/03/msg004179.html
Some examples:
$ dd if=/dev/zero of=/dev/null bs=1m count=1 msgfmt=human
1+0 records in
1+0 records out
1048576 bytes (1,0 MB) transferred in 0.001 secs (1048576000 bytes/sec - 1,0 GB/sec)
$ dd if=/dev/zero of=/dev/null count=1 msgfmt='
> <speed>%E</speed>
> <time>%s</time>
> <bytes>%b</bytes>
> '
<speed>500 KB/sec</speed>
<time>0.001</time>
<bytes>512</bytes>
if the block has moved, arrange so that trailing newlines are never placed in the string
in the first place, by accumulating them and adding them only after we've encountered a
non-newline character. This allows also for more efficient appending since we know how much
we need beforehand. From FreeBSD.
it will always be displayed when an unprivilegied user moves files across
filesystems (mv(1) uses cp -p in that case). After all, there is no warning
that we loose a setuid bit during a move or copy, so this makes sense.
Fixes bin/45259
Also introduce library functions for copying extended attributes from one
file to another:
- extattr_copy_file, extattr_copy_fd, extattr_copy_link, with FreeBSD style,
where a namespace is to be supplied
- cpxattr, fcpxattr, lcpxattr, with Linux style, where all namespaces
accessible to the caller are copied, and the others are silently ignored.
getpagesize() to size_t. For some reason getpagesize() is defined to
return int, and several of the page counts we get come back from the
kernel as int32_t; in LP64 without the cast the byte count will be
computed in a 32-bit value and for large processes will overflow and
become negative... and then remain negative when divided by 1024 to
convert to kilobytes.
Fixes a problem I hit the other day where I saw negative RSS, which
turns out also to be PR 40642.
Note: other logic in here will break down when we first get >2TB
processes... and int32 page counts will break on >8TB processes. But
hopefully we won't see any of that for a few years yet.
Push -Wno-array-bounds down to the cases that depend on it.
Selectively disable warnings for 3rd party software or non-trivial
issues to be reviewed later to get clang -Werror to build most of the
tree.
C99ism (inlined variable declaration), which hurts when pdksh is used
for bootstrapping pkgsrc. Move the two declarations to the beginning
of the block.
"if" and "of" with the exception that the communicate with a rump
kernel instead of the host kernel.
For example, to write stdout to /tmp/file.txt in a rump kernel namespace:
dd rof=/tmp/file.txt
copy /file1 to /file2 inside a rump kernel:
dd rif=/file1 rof=/file2
copy a snippet from /dev/rmd0d on the rump kernel to the host fs:
dd rif=/dev/rmd0d of=save seek=1000 count=3
Eat that, usermode OS.
(I'll document the operands one I have some manpage to refer to
for rump client use).
Bring back fixes from revision 1.75:
- Fix a couple of bugs to make the following two echo statements print the
same output as they should:
line='#define bindir "/usr/bin" /* comment */'
echo "${line%%/\**}"
echo ${line%%/\**}
1. ISDBLQUOTE() was not working properly for non VSNORMAL expansions because
varnest was incremented before the variable was completely parsed. Add
an insub adjustment to keep track of that.
2. When we have a quoted backslash, we either need to escape twice, because
one level of escaping will be stripped later (in the variable substitution
case) or simply enter the backslash.
same output as they should:
line='#define bindir "/usr/bin" /* comment */'
echo "${line%%/\**}"
echo ${line%%/\**}
1. ISDBLQUOTE() was not working properly for non VSNORMAL expansions because
varnest was incremented before the variable was completely parsed. Add
an insub adjustment to keep track of that.
2. When we have a quoted backslash, we need to escape twice, because one
level of escaping will be stripped later. (XXX: Do that when insub == 1
only?)
- Make macros statements
Write out the mmap-ed data in small chunks to avoid locking the output
file for a long time.
Suggested by David Holland on "source-changes-d" mailing list.
a very annoying property: if the source media is slow (like a slow
network), the target file will be locked for the duration of the
entire max 8MB write and cause processes attempting to e.g. stat()
it to "tstile" (for several minutes in the worst case). Revisit
this if/when vnode locking gets a little smarter.
chs ok (although he would rather see vnode locking improvements,
but that's a slightly larger project)
