Implement disk_add_alias to allow aliases to be added to disks. All
disk have a primary name (say "foo") can also have secondary names
(say "bar") such that all instances of "foo" also have a "bar"
alias. So if you have foo0, foo0p1, foo1, foo1s1 and foo1s1a nodes
created by the foo driver and gpart, device nodes bar0, bar0p1, bar1,
bar1s1 and bar1s1a will appear as symlinks back to the original nodes.
This generalizes to multiple aliases. However, since the unit number
follows the primary name, multiple device drivers can't create the
same aliases unless those drives coorinate the unit number space (eg
you couldn't add an alias 'disk' to both 'da' and 'ada' because it's
possible to have da0 and ada0, because 'disk0' is ambiguous).
Differential Revision: https://reviews.freebsd.org/D11873
o Replace __riscv64 with (__riscv && __riscv_xlen == 64)
This is required to support new GCC 7.1 compiler.
This is compatible with current GCC 6.1 compiler.
RISC-V is extensible ISA and the idea here is to have built-in define
per each extension, so together with __riscv we will have some subset
of these as well (depending on -march string passed to compiler):
__riscv_compressed
__riscv_atomic
__riscv_mul
__riscv_div
__riscv_muldiv
__riscv_fdiv
__riscv_fsqrt
__riscv_float_abi_soft
__riscv_float_abi_single
__riscv_float_abi_double
__riscv_cmodel_medlow
__riscv_cmodel_medany
__riscv_cmodel_pic
__riscv_xlen
Reviewed by: ngie
Sponsored by: DARPA, AFRL
Differential Revision: https://reviews.freebsd.org/D11901
Remove some statements which are no longer correct after ino64, and
clarify other.
The rewording is not in fact specific to ino64 and improvements are
useful on the stable branches.
Noted and reviewed by: bde
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
- Store the symbol table contents in an anonymous swap-backed object. Have
mmap(/dev/ksyms) map that object, and stop mapping the symbol table into
the calling process in ksyms_open(). Previously we would cache a pointer
to the pmap of the opening process, and mmap(/dev/ksyms) would create a
mapping using the physical address found by a pmap lookup at the initial
mapping address. However, this assumes that the cached pmap is valid,
which may not be the case. [1]
- Remove the ksyms ioctl interface. It appears to have been added to work
around a limitation in libelf that no longer exists; see r321842.
Moreover, the interface is difficult to support and isn't present in
illumos. Since ksyms was added specifically to support lockstat(1), it
is expected that this removal won't have any real impact.
- Simplify ksyms_read() to avoid unnecessary copying.
- Don't call the device handle destructor if we fail to capture a snapshot
of the kernel's symbol table. devfs will do that for us.
Reported by: Ilja van Sprundel <ivansprundel@ioactive.com> [1]
Reviewed by: kib (previous revision)
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D11789
src.conf(5) should document which knobs are which and the dependency between each;
remove the comment so the variable can apply to non-"meta mode options".
MFC after: 2 weeks
directories to SUBDIR.${MK_TESTS} idiom
This is being done to pave the way for future work (and homogenity) in
^/projects/make-check-sandbox .
No functional change intended.
MFC after: 1 weeks
- bsd.compiler.mk: Must ensure that the CCACHE_WRAPPER_PATH comes first
in PATH.
- Makefile.inc1: Must prepend the CCACHE_WRAPPER_PATH into BPATH as it
overrides the PATH set in bsd.compiler.mk in sub-makes. The PATH
set in bsd.compiler.mk is not exported and doing so would cause it to
then override the BPATH set from environment. The only sane solution
is to prepend into BPATH as needed.
CCACHE_PATH could possibly be used for some of this as well.
Sponsored by: Dell EMC Isilon
service.
For tcp-client & udp-client, use the same port in configuration snippet as used
in the comment prior to remove any ambiguity on the port number which needs to
be specified.
Reviewed by: bcr (mentor) wblock (mentor)
Approved by: gavin
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D9830
This uses the /usr/local/libexec/ccache/<cc,c++> wrappers rather than
modifying CC to be '/usr/local/bin/ccache cc'. Some forms of compilation
do not support the 'command' type.
Sponsored by: Dell EMC Isilon
Linux specific things to the native fdescfs file system.
Unlike FreeBSD, the Linux fdescfs is a directory containing a symbolic
links to the actual files, which the process has open.
A readlink(2) call on this file returns a full path in case of regular file
or a string in a special format (type:[inode], anon_inode:<file-type>, etc..).
As well as in a FreeBSD, opening the file in the Linux fdescfs directory is
equivalent to duplicating the corresponding file descriptor.
Here we have mutually exclusive requirements:
- in case of readlink(2) call fdescfs lookup() method should return VLNK
vnode otherwise our kern_readlink() fail with EINVAL error;
- in the other calls fdescfs lookup() method should return non VLNK vnode.
For what new vnode v_flag VV_READLINK was added, which is set if fdescfs has beed
mounted with linrdlnk option an modified kern_readlinkat() to properly handle it.
For now For Linux ABI compatibility mount fdescfs volume with linrdlnk option:
mount -t fdescfs -o linrdlnk null /compat/linux/dev/fd
Reviewed by: kib@
MFC after: 1 week
Relnotes: yes
over the scheduling precision than 'ticks' can offer, and because sometimes
you're already working with sbintime_t units and it's dumb to convert them
to ticks just so they can get converted back to sbintime_t under the hood.
- Remove 'if_rtwn_load="YES"' line from loader.conf; the module was
renamed in r319733 + it will be loaded automatically as a dependency.
- Move new sentence to new line.
- Add short description for dev.rtwn.%d.rx_buf_size tunable.
already built with this flag so libstand should also be build as such.
This will be needed when moving to lld as it refuses to link due to
incompatible relocations.
Sponsored by: DARPA, AFRL
This fixes 'make cleandir' to use the same ordering as 'make cleanobj'.
Meaning that SUBDIR will be recursed before the current directory is
handled. This avoids an 'rm -rf /usr/obj/usr/src/lib/libc' while
a child 'rm -rf /usr/obj/usr/src/lib/libc/tests' is being ran next,
or even removing the current directory and then recursing into a child
and using the 'missing OBJDIR' logic to remove files rather than the
directory.
The most ideal ordering here would be for 'cleanobj' and 'cleandir' to
simply remove the .OBJDIR and then not recurse at all. This is only
safe if it is guaranteed that all children directories have no orphaned
files in their source checkout and are only using obj directories. This
is usually safe from the top-level build targets and when using
WITH_AUTO_OBJ. Improving the build for those cases is coming.
Reported by: cperciva, scottl
X-MFC-With: r321427
MFC after: 2 weeks
Sponsored by: Dell EMC Isilon
- Only recurse on cleanobj/cleandir if there is no .OBJDIR being used.
If we don't recurse then bsd.obj.mk will just rm -rf the OBJDIR dir.
- When recursing on cleanobj/cleandir don't remove dependfiles/dirs
redundantly from the child and main processes. Meaning '.depend', and
'tags', and '.depend.*' will now only be removed from the main
process.
- Stop recursing on 'cleandepend' since the main process can handle
removing all files via the default glob patterns in CLEANDEPENDFILES.
- This reverts r288201, by readding recursion on 'cleanobj', due to
r291635 changing how bsd.subdir.mk handles recursion.
This is primarily targeting ESTALE NFS errors from rm(1) during a
buildworld but is also a performance optimization as both issues fixed
were redundant anyway.
Reported by: cperciva, scottl
MFC after: 2 weeks
Sponsored by: Dell EMC Isilon
Also switch the logic to enable this for any non-lld linker, since
filter library support is fairly simple and is very likely supported
by any other linker capable of linking the FreeBSD base system.
MFC after: 2 months
MFC with: r321369
Sponsored by: The FreeBSD Foundation
If ipfw_netflow_fib, the ipfw rule will only match packets in that FIB.
While here correct some value in rc.conf(5) to be int and not str.
Sponsored by: Gandi.net
Create libdl.so.1 as a filter for libc.so.7 which exports public dl*
functions. The functions are resolved from the rtld instead, the goal
of creating library is to avoid errors from the static linker due to
missed libdl. For static binaries, an empty .o is compiled into
libdl.a so that static binaries still get dl stubs from libc.a.
Right now lld cannot create filter objects, disable libdl on arm64
when binutils are not used.
Reviewed by: bdrewery, dim (previos version); emaste
Exp run: PR 220525, done by antoine
Sponsored by: The FreeBSD Foundation
MFC after: 1 month
Differential revision: https://reviews.freebsd.org/D11504
The benefit of BIT_FLS() is that ffsl() can be implemented with a
count leading zeros instruction which is more widespread available.
Submitted by: Sebastian Huber <sebastian.huber@embedded-brains.de>
MFC after: 1 week
`MK_ZONEINFO_LEAPSECONDS_SUPPORT == yes` and
`MK_ZONEINFO_OLD_TIMEZONES_SUPPORT == yes`.
Keep `LEAPSECONDS` and `OLDTIMEZONES` for backwards compatibility,
but print out a warning notifying users that they should use the new
variables, in an effort to migrate them to the variables. This is being
done mostly for automated build tools, etc, that might rely on these
variables being set. The variables will be removed in the future on
^/head, e.g., after ^/stable/12 is cut.
MFC after: 1 month
Relnotes: yes
Reviewed by: bdrewery
Differential Revision: D11376
the terminal work properly out of the box when logging over a serial
line, which is quite important for the user experience on boards like
Raspberry Pi. It doesn't affect cases where the terminal size is
already non-zero, such as SSH or vt(4) sessions.
Note that this doesn't handle a scenario pointed out by rgrimes@:
when the terminal is resized after login, the terminal size won't
get updated even after logging out and back in.
Reviewed by: imp
Obtained from: CheriBSD
Sponsored by: DARPA, AFRL
Differential Revision: https://reviews.freebsd.org/D10642
