The cd handles should be collected as list of partitions. Some systems also
provide base name for block device (like PciRoot(0x0)/Pci(0x5,0x0)), we need
to be careful about those.
To make out life a bit easier, we prepare not just an array of handles, but we
allocate pdinfo struct for each handle and devicepath, then we can simplify
our work to sort the devices.
Differential Revision: https://reviews.freebsd.org/D21187
Add FAT support to makefs by copying some files from sys/fs/msdosfs/ and
updating others with changes from NetBSD.
The six files copied from sys/fs/msdosfs at r348251 and modified are:
denode.h direntry.h fat.h msdosfs_fat.c msdosfs_lookup.c msdosfsmount.h
I would prefer to avoid the duplication, but reluctance to doing so was
expressed in a previous review (D11197); for now copy the files and
revisit in the future.
Submitted by: Siva Mahadevan
Discussed with: cem, imp
MFC after: 1 month
Relnotes: Yes
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D16438
Otherwise the mutex needs to be dropped when copying out the midistat
sbuf, leading to a race which allows one to read kernel memory beyond
the end of the sbuf buffer.
Reported and tested by: pho
Security: CVE-2019-5612
Rework recursive_timed_mutex so that it uses __thread_id instead of
using the lower-level __libcpp_thread_id. This is prep for fixing
PR42918. Reviewed as https://reviews.llvm.org/D65895
Pull in r368916 from upstream libc++ trunk (by Marshall Clow):
Fix thread comparison by making sure we never pass our special 'not a
thread' value to the underlying implementation. Fixes PR#42918.
This should fix std:🧵🆔:operator==() attempting to call
pthread_equal(3) with zero values.
Reported by: andrew@tao11.riddles.org.uk
PR: 239038, 239550
MFC after: 3 days
In Seventh Edition UNIX, the last pointer passed to free() was
guaranteed to not actually have been freed allowing memory to be
"compacted" via the following pattern:
free(foo);
foo = realloc(foo, newsize);
Further, Andrew Koenig reports in "C Traps and Pitfalls" that the
original realloc() implementation required this pattern.
The C standard is clear that this is Undefined Behavior. Modern
allocators don't support it and no portable code could rely on it so
remove this support.
Note: the removed implementation contains an off-by-one error and if
an item isn't found on the freelist, then twice as much memory as the
largest possible allocation will be copied.
Reviewed by: kib, imp
Obtained from: CheriBSD
Sponsored by: DARPA, AFRL
Differential Revision: https://reviews.freebsd.org/D21296
