The H_SET operation of the history() function takes an int argument which is
the position of the item to which the cursor should be moved to.
Submitted by: Abhinav Upadhyay <abhinav@NetBSD.org>
The sysctl(HW_PAGESIZE) call cannot fail on FreeBSD kernels at least.
And even if it failed for some improbable reason, PAGE_SIZE is a safe
value to return.
Discussed with: jilles
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
patm(4) devices.
Maintaining an address family and framework has real costs when we make
infrastructure improvements. In the case of NATM we support no devices
manufactured in the last 20 years and some will not even work in modern
motherboards (some newer devices that patm(4) could be updated to
support apparently exist, but we do not currently have support).
With this change, support remains for some netgraph modules that don't
require NATM support code. It is unclear if all these should remain,
though ng_atmllc certainly stands alone.
Note well: FreeBSD 11 supports NATM and will continue to do so until at
least September 30, 2021. Improvements to the code in FreeBSD 11 are
certainly welcome.
Reviewed by: philip
Approved by: harti
The internal array size goes through a loop and is compared with numitems
which at its limits makes can be unreachably higher than arraysz.
Prevent an hypothetical overflow by matching the types.
MFC after: 1 week
Taking some hints from the regex variant in nvi(1) and higher-level
compiler warnings, update some types in our regex(3) implementation.
Joint work with: Kyle Evans
MFC after: 2 weeks
gctl_dump(3) is only exposed when stdio.h is #include'd first, per its
addition in r112510. The reasoning noted for the conditional "exposure"
of the function was to "limit #include pollution".
This addresses an issue I found with the documentation when looking at
bug 218809, which in turn addresses a -Wimplicit-function-declaration
compiler warning in `tools/regression/geom_gpt/test.c` (it uses
gctl_dump(3)).
MFC after: 5 weeks
Sponsored by: Dell EMC Isilon
- Use .Dv when mentioning NULL per mdoc(7).
- Reword `g_device_path`, `g_open_by_ident`, and `g_providername`'s descriptions
so they're less wordy.
- Fix a typo in `g_device_path` (can not -> cannot).
MFC after: 5 weeks
Tested with: igor, make manlint
Sponsored by: Dell EMC Isilon
Make some use of reallocarray, attempting to limit it to cases where the
parameters are unsigned and there is some theoretical chance of overflow.
MFC afer: 2 weeks
Differential Revision: https://reviews.freebsd.org/D9980
properly anyway. (Upstream has reorganized this somewhat in the mean
time, but for proper backtraces we would need llvm-symbolizer in base.)
MFC after: 3 days
I inadvertedly soubled the size of the memset without noticing the
start address had changed. The size for the memset in pt_map_thread()
shouldn't actually match the reallocarray() so undo that part of r317200.
This is a re-commit of r317201 to clarify the log.
X-MFC with: r317200
Lengths are not negative, so map_len should be unsigned. Unsign the
corresponding indexes too and bring a small use of reallocarray(3).
Reorder the memset to be consistent with the realloc: it appears we
were only clearing half the memory in pt_map_thread().
MFC after: 2 weeks
When application reads large directory, calling telldir() for each entry,
like Samba does, it creates exponential performance drop as number of
entries reach tenths to hundreds of thousands. It is caused by full search
through the internal list, that never finds matches in that scenario, but
creates O(n^2) delays. This patch optimizes that search, limiting it to
entries of the same buffer, turning time closer to O(n) in case of linear
directory scan.
PR: 218622
Reviewed by: jhb, jilles
MFC after: 2 weeks
Sponsored by: iXsystems, Inc.
Differential Revision: https://reviews.freebsd.org/D10408
Unsign some variables involved in allocation as they will never be
negative anyways. Provide some bounds checking through reallocarray(3).
This is all very unlikely to have any visible effect.
Reviewed by: jamie
MFC after: 3 weeks
The maximum scale is 6 (K, M, G, T, P, E) (B is 0).
Overly large explict scales were checked correctly, but for sufficently
large numbers HN_AUTOSCALE would get to 7 resulting in an out of bounds
read.
Found with humanize_number_test and CHERI bounds checking.
Reviewed by: emaste
Obtained from: CheriBSD
MFC after: 1 week
Sponsored by: DARPA, AFRL
Differential Revision: https://reviews.freebsd.org/D10376
When the replay window size is large than UINT8_MAX, add to the request
the SADB_X_EXT_SA_REPLAY extension header that was added in r309144.
Also add support of SADB_X_EXT_NAT_T_TYPE, SADB_X_EXT_NAT_T_SPORT,
SADB_X_EXT_NAT_T_DPORT, SADB_X_EXT_NAT_T_OAI, SADB_X_EXT_NAT_T_OAR,
SADB_X_EXT_SA_REPLAY, SADB_X_EXT_NEW_ADDRESS_SRC, SADB_X_EXT_NEW_ADDRESS_DST
extension headers to the key_debug that is used by `setkey -x`.
Modify kdebug_sockaddr() to use inet_ntop() for IP addresses formatting.
And modify kdebug_sadb_x_policy() to show policy scope and priority.
Reviewed by: gnn, Emeric Poupon
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D10375
of the current usermode implementation of the POSIX semaphores.
For NSEMS_MAX, return -1 without changing errno, which indicates that
the variable has no limit. Before, sysconf(3) returned parameters
queried from the ksem(9) legacy implementation, which apparently has
low defaults for NSEMS_MAX.
Reported and tested by: jbeich
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
The conditional jump can only be performed to targets up to 1MB in
either direction and does not work too well when linker places cerror
further that that from the caller. In that case linker will complain
about relocation overflows.
Reviewed by: emaste, andrew
Differential Revision: https://reviews.freebsd.org/D10305
On most architectures crt objects are compiled in a multiple-step process
so that sed can be run on the generated assembly. As the final step,
the C compiler generates an object file from the modified assembly output.
Currently this last step uses $CC with only $ACFLAGS. However, for other
uses in the tree, $ACFLAGS is meant to include assembly-specific compiler
flags that are in addition to $CFLAGS (see default .S.o rules
bsd.suffixes.mk). In particular, external toolchains may require
additional flags to select a non-default target which will be present
in CFLAGS but not ACFLAGS. To support this while still mitigating the
issue with CFLAGS described in r234502, include a modified CFLAGS that
excludes "-g" when assembling the modified assembly files.
Note that normally an assembler ($AS) is used to assemble .s flags to
object files (see bsd.suffixes.mk). However, llvm-based toolchains do
not currently have a stand-alone assembler.
Reviewed by: imp
Sponsored by: DARPA / AFRL
Differential Revision: https://reviews.freebsd.org/D10085
Start new sentences on new lines.
Sentences affected by the change are wrapped at <80 columns. Other
potentially offending lines have been left alone to reduce churn.
MFC after: 2 months
Sponsored by: Dell EMC Isilon
These functions are already referenced throughout the manpage -- this makes their
presence more apparent.
MFC after: 2 months
Sponsored by: Dell EMC Isilon
Current implementation of dosfs in libstand reads full File Allocation Table to
the RAM in the initialization code. In the extreme case of FAT32 filesystem,
this structure will take up to 256-1024 Mb of loader memory, depending on the
cluster size.
Proposed patch reduces libstands/dosfs memory requirements to 128 Kb for all
variants of dosfs filesystem. For FAT12 and FAT16 filesystems, File Allocation
Table is cached in full, as before. For FAT32, File Allocation Table is broken
into the equal blocks of 128 Kilobytes (32768 entries), and only current block
is cached.
Because per-filesystem context is now small, global FAT cache (for all
instances of dosfs filesystem) is replaced by local per-instance cache.
Submitted by: Mikhail.Kupchik_gmail.com
Reviewed by: tsoome, allanjude
Differential Revision: https://reviews.freebsd.org/D9547
While we have mechanisms in place to protect ourselves against the read
behind the disk end, there is still one corner case. As the GPT
partition table has backup table at the end of the disk, and we yet
do not know the size of the disk (if the wrong size is provided by the
firmware/bios), we need to limit the reads to avoid read ahead in such case.
Note: this update does add constant into stand.h, so the incremental build
will need to get local stand.h updated first.
Reviewed by: allanjude
Differential Revision: https://reviews.freebsd.org/D10187
These are error-checked versions of memory allocation routines used by
NetBSD code, and are being added to facilitate updates to makefs.
Reviewed by: ngie
Differential Revision: https://reviews.freebsd.org/D10291
Areas not covered still [positive functionality wise] are:
- sbuf_{clear,get,set}_flags
- sbuf_new (in particular, with fixed buffers, etc).
Some basic negative testing has been added, but more will be added in the
future.
This work was in part to validate work done by cem in r288223, and ian
before that.
MFC after: 2 months
Sponsored by: Dell EMC Isilon
