use a bounce buffer for the actual transfer to avoid crossing a 64k
boundary. To do this, we malloc a buffer twice as big as we need and then
find an aligned block within that buffer to do the transfer. The check
to see which part of the block we use used the wrong variable for part of
the condition meaning that in certain edge cases we would ask the BIOS to
cross a 64k boundary. The BIOS request would then fail resulting in file
transfers that just magically fail in the middle without any apparent
reason. Specifically, my tests for the splitfs boot floppies managed to
trigger this edge case.
MFC after: 1 week
X-MFC-info: along with fixes to libstand filesystems
- bzipfs and gzipfs now properly return errno values directly from their
read routines rather than returning -1.
- missing errno values on error returns for the seek routines on almost
all filesystems were added.
- fstat() now returns -1 if an error occurs rather than ignoring it.
- nfs's readdir() routine now reports valid errno values if an error or
EOF occurs rather than EPERM (It was just returning 0 for success and
1 for failure).
- nullfs used the wrong semantics for every function besides close() and
seek(). Getting it right for close() appears to be an accident at that.
- read() for buffered files no longer returns 0 (EOF) if an error occurs,
but returns -1 instead.
Presumably, at some point, you had to include jail.h if you included
proc.h, but that is no longer required.
Result of: self injury involving adding something to struct prison
life easier" patch: I doubt this will affect anyone else, but the FreeBSD
Update build code was getting very confused by this.
Approved by: rwatson (mentor)
PR: bin/61087
From the NEWS file of cvs 1.11.11:
* pserver can no longer be configured to run as root via the
$CVSROOT/CVSROOT/passwd file, so if your passwd file is
compromised, it no longer leads directly to a root hack. Attempts
to root will also be logged via the syslog.
* Malformed module requests could cause the CVS server to attempt
to create directories and possibly files at the root of the
filesystem holding the CVS repository. Filesystem permissions
usually prevent the creation of these misplaced directories, but
nevertheless, the CVS server now rejects the malformed requests.
Obtained from: ccvs.cvshome.org
* Remove mention of '>', 'A', and 'S' states
* Mention 'W' state.
* List 'J' state in the correct location.
* Sync with flags in sys/proc.h
Approved by: rwatson (mentor)
MFC after: 7 days
should slightly reduce the number of system calls in critical portions of
the shell, and select a more efficient path through the fdalloc code.
Reviewed by: bde
