kthread_add() takes the same parameters as the old kthread_create()
plus a pointer to a process structure, and adds a kernel thread
to that process.
kproc_kthread_add() takes the parameters for kthread_add,
plus a process name and a pointer to a pointer to a process instead of just
a pointer, and if the proc * is NULL, it creates the process to the
specifications required, before adding the thread to it.
All other old kthread_xxx() calls return, but act on (struct thread *)
instead of (struct proc *). One reason to change the name is so that
any old kernel modules that are lying around and expect kthread_create()
to make a process will not just accidentally link.
fix top to show kernel threads by their thread name in -SH mode
add a tdnam formatting option to ps to show thread names.
make all idle threads actual kthreads and put them into their own idled process.
make all interrupt threads kthreads and put them in an interd process
(mainly for aesthetic and accounting reasons)
rename proc 0 to be 'kernel' and it's swapper thread is now 'swapper'
man page fixes to follow.
- p_sflag was mostly protected by PROC_LOCK rather than the PROC_SLOCK or
previously the sched_lock. These bugs have existed for some time.
- Allow swapout to try each thread in a process individually and then
swapin the whole process if any of these fail. This allows us to move
most scheduler related swap flags into td_flags.
- Keep ki_sflag for backwards compat but change all in source tools to
use the new and more correct location of P_INMEM.
Reported by: pho
Reviewed by: attilio, kib
Approved by: re (kensmith)
setenv(3) by tracking the size of the memory allocated instead of using
strlen() on the current value.
Convert all calls to POSIX from historic BSD API:
- unsetenv returns an int.
- putenv takes a char * instead of const char *.
- putenv no longer makes a copy of the input string.
- errno is set appropriately for POSIX. Exceptions involve bad environ
variable and internal initialization code. These both set errno to
EFAULT.
Several patches to base utilities to handle the POSIX changes from
Andrey Chernov's previous commit. A few I re-wrote to use setenv()
instead of putenv().
New regression module for tools/regression/environ to test these
functions. It also can be used to test the performance.
Bump __FreeBSD_version to 700050 due to API change.
PR: kern/99826
Approved by: wes
Approved by: re (kensmith)
handling is that fd = open(foo) is -1. This bug is harmless since
close(-1) just returns an error (which the code ignores).
Found by: Coverity Prevent(tm)
CID: 1503 (in userland test run)
Not because I admit they are technically wrong and not because of bug
reports (I receive nothing). But because I surprisingly meets so
strong opposition and resistance so lost any desire to continue that.
Anyone who interested in POSIX can dig out what changes and how
through cvs diffs.
1) Under POSIX unsetenv("foo=bar") is explicit error and not equal
to unsetenv("foo")
2) Prepare for upcomig POSIXed putenv() rewrite: make putenv() calls
portable and conforming to standard.
Before this fix the -h flag was ignored (i.e. setfacl
always set the ACL on the file pointed to by the symbolic
link even when the -h flag requested that the ACL be set
on the symbolic link itself).
either -v or -V) if a file with a slash in the name doesn't exist (if there is
no slash we already did that).
Additionally, suppress the error message for command -v for files with a slash.
PR: 107674
Submitted by: Martin Kammerhofer
This allows script compatibility with Linux, whose
"hostname" is the same as BSD "hostname -s".
With this change, "hostname -f" is the same on
both systems.
MFC after: 7 days
issue a syntax error immediately but save the information that it is erroneous
for later when the parameter expansion is actually done. This means eg. "false
&& ${}" will not generate an error which seems to be required by POSIX.
Include the invalid parameter expansion in the error message (sometimes
abbreviated with ... because recovering it would require a lot of code).
PR: 105078
Submitted by: emaste
instead of removing the file and issue a warning about
the removal, do not do any operation at all in case -P
is specified when the dinode has hard links.
With -f and -P specified together, we assume that the
user wants rm to overwrite the contents of the file
and remove it (destroy the contents of file but leave
its hard links as is).
The reason of doing it this way is that, in case where
a hard link is created by a malicious user (currently
this is permitted even if the user has no access to the
file). Losing the link can potentially mean that the
actual owner would lose control completely to the user
who wants to obtain access in a future day.
Discussed with: Peter Jermey
is hard links. Overwritting when links > 1 would cause data
loss, which is usually undesired.
Inspired by: discussion on -hackers@
Suggested by: elessar at bsdforen de
Obtained from: OpenBSD
compatible with old -r behavior with regards to -L. You can now copy fifos
and other special files with -r.
Reviewed by: -standards (long ago), das, bde
Approved by: bde (recently)
process leader for each job. Now the last specified option for the output
format (-l, -p or -s) wins, previously -s trumped -l.
PR: 99926
Submitted by: Ed Schouten and novel (patches modified by me)
current implementation of df(1) is does not properly format the output under
certain conditions. Right now -kP and -Pk are not the same thing. Further,
when we set the BLOCKSIZE environment variable, we use "1k" instead of "1024",
making the header display incorrectly.
To quote the specification:
"When both the -k and -P options are specified, the following header line
shall be written (in the POSIX locale):
"Filesystem 1024-blocks Used Available Capacity Mounted on\n"
- If -P has been specified, check to make sure that -k has not already been
specified, if so, simply break instead of clobbering the previous blocksize
- Use 1024 instead of 1k to make the header POSIX compliant
Reported by: Andriy Gapon
Discussed with: bde, ru
MFC after: 1 week
the header title string "bar" extends to the end of the argument
even if it contains commas or spaces, unlike in RELENG_4 or earlier.
The modern syntax agrees with SUSv3.
MFC after: 3 days
"feature" doesn't seem to be in the standards or elsewhere, and
it is against what we are used to in C and sh(1), so put the
paragraph under BUGS.
Pointed out by: dougb
MFC after: 3 days
Utilities option. Its value is printed at the beginning of the line if tracing
(-x) is active. PS4 defaults to the string "+ " which is compatible with the
old behaviour to always print "+ ".
We still need to expand variables in PS1, PS2 and PS4.
PR: 46441 (part of)
Submitted by: schweikh
Obtained from: NetBSD
.//dir as /dir. Rather strip it only for the purpose of checking if the
directory path should be printed.
PR: 88813
Submitted by: Josh Elsasser
Patch from: NetBSD (cd.c rev 1.38)
MFC after: 2 weeks
next read filename overwrite previous one, resulting in acl being
applied only to the last name in the list.
Submitted by: Oleg Lomaka <oleg.lomaka at gmail com>
MFC after: 1 week
Approved by: kan (mentor)
wording makes it look like pax archives > 32256 bytes are not
POSIX-compliant! Correct this to state that pax archives with
block sizes > 32256 are not POSIX compliant...and settle our fears.
PR: docs/97059
Reviewed by: Giorgos Keramidas <keramida>
own buffer. Interactively typing in long lines (>1023 characters)
previously overflowed the buffer. Unlike the NetBSD people I don't see the
need to subtract 8 from BUFSIZ, so I just used BUFSIZ-1.
Obtained from: NetBSD
PR: 91110
I would have chosen the EOF markers, but they are no longer available
AFAICS, so output "<<HERE" and "<<XHERE" instead.
(NOTE: These changes only affect DEBUG output.)
demanded by POSIX.
- A redirection error is only fatal (meaning the execution of a shell script is
terminated) for special built-ins. Previously it was fatal for all shell
builtins, causing problems like the one reported in PR 88845.
- Variable assignments remain in effect for special built-ins.
- Option or operand errors are only fatal for special built-ins.
This change also makes errors from 'fc' non-fatal (I could not find any reasons
for this behaviour).
Somewhat independently from the above down-grade the error handling in the
shift built-in if the operand is bigger than $# from an error() call (which is
now fatal) to a return 1. I'm not sure if this should be considered a POSIX
"operand error", however this change is needed for now as we trigger that error
while building libncurses. Comparing with other shells, zsh does the same as
our sh before this change (write a diagnostic, return 1), bash behaves as our
sh after this commit (no diagnostic, return 1) and ksh93 and NetBSD's sh treat
it as a fatal error.
all column-headers to print in lowercase by default. I was in too
much of a rush in committing 1.75, and didn't notice that the case
had changed. This time I did considerably more testing, and used
'diff' instead of just quickly eyeballing the results...
Apologies. I expect this means the dunce cap is mine for awhile.
If this doesn't work, I'll just drop back to 1.72 and hide under
my desk for awhile.
the user specifies a keyword which is an alias to some other keyword.
E.g.: stat (for state) or pcpu (for %cpu)..
Submitted by: Kostik Belousov
MFC plans: "soon"
is just ". file" according to POSIX, however many other shells allow
arguments to be passed after the file. For compatibility (we even use that
feature in buildworld) additional arguments are not considered to be an
error, even though this shell does not do anything with the arguments at all.
new member to struct builtincmd and set it to 1 if -s was specified. This
is done because there are cases where special builtins must be treated
differently from other builtins.
Obtained from: NetBSD (builtins.def part)
flag to use a time other than modtime (-c, -u, or -U), the output would
actually be sorted by the specified time rather than size. This does
alter the behavior in the case where both -S and -t are specified. Now,
-S is always preferred. Previously, -t was preferred if one of -c, -u, or
-U was specified, and -S was preferred otherwise. Perhaps -S and -t should
override each other (last one specified wins).
output-format keyword, and the keyword they picked is an alias to
some other keyword. E.g.: ps -o stat=Zustand $$
('stat' is defined as an alias for 'state')
PR: bin/57833
MFC after: 3 weeks
The tcsh 6.14 uses libiconv to convert catalogs to appropriate charset
dynamically. However, we don't have libiconv in our tree. So, I made
some hack to load libiconv dynamically. If libiconv is available, you
can use catalogs for more locales than the locales which catalog is
actually installed.
To use this feature, you need to symlink catalogs to appropriate
locales. You can do this by installing ports/shells/tcsh_nls.
Reviewed by: arch (no objection)
MFC after: 1 week
automatically it is possible wait4(2) returns -1 and sets
errno = ECHILD if there were forked children. A user can
set such signal handler e.g. via ``trap "" 20'', see a PR
for the test case. Deal with this case and mark a job as
JOBDONE.
PR: bin/90334
Submitted by: bde
MFC after: 4 weeks
This makes a difference for the trap builtin, where after "trap '' 0" we
printed "trap -- quit". This is wrong, because an empty action means to reset
the action to the default. A side effect of this commit is that empty
variables are now printed as "variable=''" instead of just "variable=".
itself and its children. Instead of calling times() (as implied by POSIX) this
implementation directly calls getrusage() to get the times because this is more
convenient.
files is too much and hard to follow. Instead, make the -I option
just mean "do not automatically set -A for root". That is, if -A
is explicitly set, -I is ignored. Also, document -I in usage().
(The ls.c diff is better viewed relative to rev. 1.80.)
No objection: mux
Silence from: mnag
MFC after: 3 days
set +o can be used to reload previous settings, for this to work disabled
options must be printed as well or otherwise options that were set in the mean
time won't be turned off.
To avoid an excessively long output line I formatted the output to print only
six options per line.
Submitted by: Jilles Tjoelker
PR: 73500
ckrealloc and ckfree (added), respectively. sh jumps out of the signal handler
using longjmp which is obviously a bad idea during malloc calls.
Note: I think there is still a small race here because volatile sig_atomic_t
only guarantees atomic reads and writes while we're doing increments and
decrements.
Protect a setmode call with INT{ON,OFF} as it calls malloc internally.
PR: 45478
Patch from: Nate Eldredge
earlier, and more gracefully. Previously, this combination would be
ignored early in the code where permissions are tested and fail later
with a very unhelpful "permission denied" error.
Instead, test for this flag in the same block that generates the
"override?" messages for read-only files, but instead of trying
to guess what the user has in mind, generate an error and exit.
Update the man page to reflect this new behavior.
Not objected to by: freebsd-hackers@
termination with set -e if a command fails in a loop body inside a function
with an explicitely tested exit status, eg
f() {
for i in 1 2 3; do
false
done
}
f || true
Briefly reviewed by: cracauer
two cases of unwanted termination with set -e:
* if-commands containing several commands separated by semicolons, eg
if false; false; then [...]
* functions with an explicitely tested exit status that contain a failing
command which is not the last one, eg
f() {
false
false
}
f || true
PR: 77067, 85267
Briefly reviewed by: cracauer
and linting procedure:
1. Remove useless sub-expression:
- if (*start || (!ifsspc && start > string && (nulonly || 1))) {
+ if (*start || (!ifsspc && start > string)) {
The sub-expression "(nulonly || 1)" always evaluates to true and
according to CVS logs seems to be just a left-over from some
debugging and introduced by accident. Removing the sub-expression
doesn't change semantics and a code inspection showed that the
variable "nulonly" is also not necessary here in any way (and the
expression would require fixing instead of removing).
2. Remove dead code:
- if (backslash && c == '\\') {
- if (read(STDIN_FILENO, &c, 1) != 1) {
- status = 1;
- break;
- }
- STPUTC(c, p);
- } else if (ap[1] != NULL && strchr(ifs, c) != NULL) {
+ if (ap[1] != NULL && strchr(ifs, c) != NULL) {
Inspection of the control and data flow showed that variable
"backslash" is always false (0) when the "if"-expression is
evaluated, hence the whole block is effectively dead code.
Additionally, the skipping of characters after a backslash is already
performed correctly a few lines above, so this code is also not
needed at all. According to the CVS logs and the ASH 0.2 sources,
this code existed in this way already since its early days.
3. Cleanup Style:
- ! trap[signo][0] == '\0' &&
+ ! (trap[signo][0] == '\0') &&
The expression wants to ensure the trap is not assigned the empty
string. But the "!" operator has higher precedence than "==", so the
comparison should be put into parenthesis to form the intended way of
expression. Nevertheless the code was effectively not really broken
as both particular NUL comparisons are semantically equal, of course.
But the parenthesized version is a lot more intuitive.
4. Remove shadowing variable declaration:
- char *q;
The declaration of symbol "q" hides another identical declaration of
"q" in the same context. As the other "q" is already reused multiple
times and also can be reused again without negative side-effects,
just remove the shadowing declaration.
5. Just small cosmetics:
- if (ifsset() != 0)
+ if (ifsset())
The ifsset() macro is already coded by returning the boolean result
of a comparison operator, so no need to compare this boolean result
again against a numerical value. This also aligns the macros usage to
the remaining existing code.
Reviewed by: stefanf@
This includes adding support for ACLs into cp(1) and mv(1) userspace
utilities.
For mv(1), if _PC_ACL_EXTENDED is in effect for the source AND destination
operands, the destination file's ACLs shall reflect the source.
For cp(1), if _PC_ACL_EXTENDED is in effect for both source and destination
operands, and -p has been specified, the ACLs from the source shall be
preserved on the destination.
MFC after: 1 month
converting the stat() call to a lstat() call, which will cover the
situation. One can exercise this bug by referring a dangling link with
something like */the-link.
Approved by: re (scottl)
Submitted by: Simon 'corecode' Schubert [corecode fs ei tum de]
Obtained from: NetBSD via DragonFlyBSD (NetBSD rev. 1.51 and DragonFly
rev. 1.6)
MFC After: 3 days
promised by the Argument List Processing section introduction.
What follows the option in the options list is its long name,
not its argument (as is the case for the -c option). Also
sort references in the SEE ALSO section.
Approved by: re (blanket)
sort(1). This functionality is provided by the -S option now, and it
is useful even though a similar effect is achievable with sort(1),
since the latter doesn't work in combination with -h. This option is
also present in NetBSD, OpenBSD, and GNU fileutils, so there's clearly
a demand for it.
Noticed by: asmodai
have this option with identical semantics (sorting large files first).
-r can be used to reverse the sort if that is desired.
PR: 81625
Submitted by: Kostas Blekos <mplekos@physics.upatras.gr>, keramida
benefit of scripts start out as: #!/bin/sh -- # -*- perl -*-
With this fix in place, we can commit a change to kern/imgact_shell.c
so FreeBSD will process the `#!' line in shell-scripts in a more
standard fashion.
PR: 16393
Mentioned on: freebsd-arch
