Commit Graph

3053 Commits

Author SHA1 Message Date
jilles
98001789f4 sh(1): Discourage use of -e.
Also, do not say that ! before a pipeline is an operator, because it is
syntactically a keyword.
2014-01-03 22:56:23 +00:00
markj
a8ea804853 Correct the description of the V state, which indicates that the process'
parent is suspended, not the process itself.

MFC after:	3 days
2013-12-28 03:04:05 +00:00
jilles
ab778292cf sh: Don't check input for non-whitespace if history is disabled.
preadbuffer() maintained a flag whether there was any non-whitespace
character. This flag is only useful when history is enabled (in that case,
lines containing only whitespace are not added to history). Instead, check
using strspn() when history is enabled.

There is an approximate 2% speedup when running
  sh -c '. /etc/rc.subr; . /etc/defaults/rc.conf; source_rc_confs'
with hot cache.
2013-12-27 15:52:18 +00:00
jilles
c039e1a7e4 sh: Simplify code related to PPID variable. 2013-12-25 16:14:02 +00:00
jilles
ffaab89202 sh: Initialize OPTIND=1 even if it came from the environment. 2013-12-24 22:38:24 +00:00
jilles
67082dae0c sh: Remove an unused variable. 2013-12-24 22:04:44 +00:00
crees
8d5de3de53 Document the lack of chflags support in pax(1)
PR:		docs/135516
Submitted by:	arundel (based on)
Approved by:	gjb (mentor)
2013-12-21 19:29:08 +00:00
jmmv
cfc6ad9bc6 Migrate tools/regression/bin/ tests to the new layout.
This change is a proof of concept on how to easily integrate existing
tests from the tools/regression/ hierarchy into the /usr/tests/ test
suite and on how to adapt them to the new layout for src.

To achieve these goals, this change:

- Moves tests from tools/regression/bin/<tool>/ to bin/<tool>/tests/.
- Renames the previous regress.sh files to legacy_test.sh.
- Adds Makefiles to build and install the tests and all their supporting
  data files into /usr/tests/bin/.
- Plugs the legacy_test test programs into the test suite using the new
  TAP backend for Kyua (appearing in 0.8) so that the code of the test
  programs does not have to change.
- Registers the new directories in the BSD.test.dist mtree file.

Reviewed by:	freebsd-testing
Approved by:	rpaulo (mentor)
2013-12-11 04:09:17 +00:00
jilles
b5a84f73b8 sh: Split set -x output into a separate function. 2013-12-06 22:24:37 +00:00
jilles
dae0be0fd9 test: Avoid looking up again the type of a known binary operator. 2013-12-05 22:53:32 +00:00
jilles
af96559459 test: Simplify the code by unifying op_num and op_type.
The global variable t_wp_op is no longer needed.
2013-12-01 17:00:57 +00:00
jilles
1d244d8c45 sh: Prefer memcpy() to strcpy() in most cases. Remove the scopy macro. 2013-11-30 21:27:11 +00:00
jilles
4e34b84587 sh: Make <&0 disable the </dev/null implicit in a background command.
Although <&0 does nothing, it is a redirection affecting standard input and
should therefore disable the </dev/null redirection implicit in a background
command.
2013-11-24 23:12:13 +00:00
jilles
367c40c277 sh: Properly quote alias output from command -v.
An alias should be printed by command -v as a command line; therefore, make
the alias definition suitable for re-input to the shell.
2013-11-10 23:00:39 +00:00
eadler
5f86fc4ba5 pkill - Optimize pgrep -F
Ask for a specific process instead of pulling down all processes when
 -F <pidfile> is specified.  This is much much faster.

 Obtained from:	DragonflyBSD
2013-11-10 05:22:29 +00:00
jilles
4cbf76c868 sh(1),limits(1): Document kqueues (-k) rlimit. 2013-11-01 13:57:30 +00:00
jilles
4d075e1cc9 sh: Reorder union node to reduce its size on 64-bit platforms. 2013-11-01 11:28:56 +00:00
jilles
f49e62a7eb sh: Allow trapping SIGINT/SIGQUIT after ignore because of '&'.
If job control is not enabled, background jobs started with  ... &  ignore
SIGINT and SIGQUIT so that they are not affected by such signals that are
intended for the foreground job. However, this should not prevent
reassigning a different action for these signals (as if the shell invocation
inherited these signal actions from its parent).

Austin group issue #751

Example:
  { trap - INT; exec sleep 10; } & wait
A Ctrl+C should terminate the sleep command.
2013-10-30 21:36:15 +00:00
brueffer
ae1c81f353 Clean up a spurious "." in SEE ALSO.
MFC after:	3 days
2013-10-28 23:02:12 +00:00
kib
734382a525 Add a resource limit for the total number of kqueues available to the
user.  Kqueue now saves the ucred of the allocating thread, to
correctly decrement the counter on close.

Under some specific and not real-world use scenario for kqueue, it is
possible for the kqueues to consume memory proportional to the square
of the number of the filedescriptors available to the process.  Limit
allows administrator to prevent the abuse.

This is kernel-mode side of the change, with the user-mode enabling
commit following.

Reported and tested by:	pho
Discussed with:	jmg
Sponsored by:	The FreeBSD Foundation
MFC after:	2 weeks
2013-10-21 16:46:12 +00:00
trasz
6d8fb50c15 Don't test arrays for being NULL.
MFC after:	1 month
2013-10-21 09:12:04 +00:00
jilles
3ccfe0d544 sh: Remove one syscall when waiting for a foreground job.
The getpgrp() call is unnecessary: if there is no job control then the
result was not used at all and if there is job control then we are not a
subshell and our process group ID is equal to our process ID (rootpid).
2013-10-18 12:35:12 +00:00
des
77d24103c0 Remove extraneous \n.
Noticed by:     Nikolai Lifanov <lifanov@mail.lifanov.com>

Approved by:	re (gjb)
2013-10-11 20:10:18 +00:00
des
1fb35847da By popular demand, move freebsd-version(1) from /libexec to /bin.
Approved by:	re (gjb)
2013-10-09 20:47:20 +00:00
trasz
8dd526065c Remove useless check - ki_loginclass is an array; can't be NULL.
CID:		1006559
Approved by:	re (kib)
MFC after:	2 weeks
Sponsored by:	FreeBSD Foundation
2013-10-04 16:08:44 +00:00
pluknet
3f9b259642 Sweep man pages replacing ad -> ada.
Approved by:	re (blackend)
MFC after:	1 week
X-MFC note:	stable/9 only
2013-10-01 18:41:53 +00:00
jilles
ad7328341a sh: Make return return from the closest function or dot script.
Formerly, return always returned from a function if it was called from a
function, even if there was a closer dot script. This was for compatibility
with the Bourne shell which only allowed returning from functions.

Other modern shells and POSIX return from the function or the dot script,
whichever is closest.

Git 1.8.4's rebase --continue depends on the POSIX behaviour.

Reported by:	Christoph Mallon, avg
2013-09-04 22:10:16 +00:00
jilles
ae84eb37bd sh: Fix race condition with signals and wait or set -T.
The change in r238888 was incomplete. It was still possible for a trapped
signal to arrive before the shell went to sleep (sigsuspend()) because a
check was missing or because the signal arrived before in_waitcmd was set.

On SMP, this bug sometimes caused the builtins/wait4.0 test to take 1 second
to execute; it then might or might not fail. On UP, the test almost always
failed.
2013-09-02 21:57:46 +00:00
jilles
6d50a40d08 sh: Simplify list() in the parser.
The erflag argument was only used by old-style (``) command substitutions.
We can remove it and handle the special case in the command substitution
code.
2013-08-30 20:50:28 +00:00
jilles
fc9c61263d sh: Separate out nbinary allocation into a function. 2013-08-30 20:37:52 +00:00
jilles
67c1af2857 sh: Use makename() where possible. 2013-08-30 20:13:33 +00:00
jilles
e60f4ea26b sh: Add a function for the case where one token is required in the parse. 2013-08-30 13:25:15 +00:00
jilles
8b7d6031e6 sh: Recognize "--" as end of options in type builtin.
This implementation makes minimal changes: command names starting with "-"
(other than "--") can still be queried normally.
2013-08-30 12:09:59 +00:00
jilles
415d59b5d8 sh: Cast -1 to pointer rather than pointer to variable of wrong type.
NEOF needs to be a non-null pointer distinct from valid union node pointers.
It is not dereferenced.

The new NEOF is much like SIG_ERR except that it is an object pointer
instead of a function pointer.

The variable tokpushback can now be static.
2013-08-30 10:45:02 +00:00
will
a52b9ca1d3 Add the ability to display the default FIB number for a process to the
ps(1) utility, e.g. "ps -O fib".

bin/ps/keyword.c:
	Add the "fib" keyword and default its column name to "FIB".

bin/ps/ps.1:
	Add "fib" as a supported keyword.

sys/compat/freebsd32/freebsd32.h:
sys/kern/kern_proc.c:
sys/sys/user.h:
	Add the default fib number for a process (p->p_fibnum)
	to the user land accessible process data of struct kinfo_proc.

Submitted by:	Oliver Fromme <olli@fromme.com>, gibbs
2013-08-26 23:48:21 +00:00
jilles
59cd1d2d27 sh: Recognize "--" as end of options in alias builtin.
Aliases starting with "-" (which are non-POSIX) will need to be preceded by
an alias not starting with "-" or the newly added "--".
2013-08-25 11:42:53 +00:00
jilles
e694117f82 sh: Disallow empty simple commands.
As per POSIX, a simple command must have at least one redirection,
assignment word or command word.

These occured in rare cases such as  eval "f()" .

The extension of allowing no commands inside { }, if, while, for, etc.
remains.
2013-08-25 10:57:48 +00:00
jilles
f53205fcfa sh: Reject ++ and -- in arithmetic.
POSIX does not require ++ and -- in arithmetic. It is probably more useful
to reject them than to treat ++x and --x as x silently.

Note that the behaviour of increment and decrement can be obtained via
(x+=1), ((x+=1)-1), (x-=1) and ((x-=1)+1).

PR:		bin/176444
2013-08-24 20:06:00 +00:00
jilles
739c3b84b8 sh: Do not prematurely discard stopped jobs in a wait builtin.
If a job is specified to 'wait', wait for it to complete. Formerly, in
interactive mode, the job was deleted if it stopped.

If no jobs are specified in interactive mode, 'wait' still waits for all jobs
to complete or stop.

In non-interactive mode, WUNTRACED is not passed to wait3() so stopped jobs
are not detected.

PR:		bin/181435
2013-08-24 09:57:32 +00:00
ken
c7af094e18 Expand the use of stat(2) flags to allow storing some Windows/DOS
and CIFS file attributes as BSD stat(2) flags.

This work is intended to be compatible with ZFS, the Solaris CIFS
server's interaction with ZFS, somewhat compatible with MacOS X,
and of course compatible with Windows.

The Windows attributes that are implemented were chosen based on
the attributes that ZFS already supports.

The summary of the flags is as follows:

UF_SYSTEM:	Command line name: "system" or "usystem"
		ZFS name: XAT_SYSTEM, ZFS_SYSTEM
		Windows: FILE_ATTRIBUTE_SYSTEM

		This flag means that the file is used by the
		operating system.  FreeBSD does not enforce any
		special handling when this flag is set.

UF_SPARSE:	Command line name: "sparse" or "usparse"
		ZFS name: XAT_SPARSE, ZFS_SPARSE
		Windows: FILE_ATTRIBUTE_SPARSE_FILE

		This flag means that the file is sparse.  Although
		ZFS may modify this in some situations, there is
		not generally any special handling for this flag.

UF_OFFLINE:	Command line name: "offline" or "uoffline"
		ZFS name: XAT_OFFLINE, ZFS_OFFLINE
		Windows: FILE_ATTRIBUTE_OFFLINE

		This flag means that the file has been moved to
		offline storage.  FreeBSD does not have any special
		handling for this flag.

UF_REPARSE:	Command line name: "reparse" or "ureparse"
		ZFS name: XAT_REPARSE, ZFS_REPARSE
		Windows: FILE_ATTRIBUTE_REPARSE_POINT

		This flag means that the file is a Windows reparse
		point.  ZFS has special handling code for reparse
		points, but we don't currently have the other
		supporting infrastructure for them.

UF_HIDDEN:	Command line name: "hidden" or "uhidden"
		ZFS name: XAT_HIDDEN, ZFS_HIDDEN
		Windows: FILE_ATTRIBUTE_HIDDEN

		This flag means that the file may be excluded from
		a directory listing if the application honors it.
		FreeBSD has no special handling for this flag.

		The name and bit definition for UF_HIDDEN are
		identical to the definition in MacOS X.

UF_READONLY:	Command line name: "urdonly", "rdonly", "readonly"
		ZFS name: XAT_READONLY, ZFS_READONLY
		Windows: FILE_ATTRIBUTE_READONLY

		This flag means that the file may not written or
		appended, but its attributes may be changed.

		ZFS currently enforces this flag, but Illumos
		developers have discussed disabling enforcement.

		The behavior of this flag is different than MacOS X.
		MacOS X uses UF_IMMUTABLE to represent the DOS
		readonly permission, but that flag has a stronger
		meaning than the semantics of DOS readonly permissions.

UF_ARCHIVE:	Command line name: "uarch", "uarchive"
		ZFS_NAME: XAT_ARCHIVE, ZFS_ARCHIVE
		Windows name: FILE_ATTRIBUTE_ARCHIVE

		The UF_ARCHIVED flag means that the file has changed and
		needs to be archived.  The meaning is same as
		the Windows FILE_ATTRIBUTE_ARCHIVE attribute, and
		the ZFS XAT_ARCHIVE and ZFS_ARCHIVE attribute.

		msdosfs and ZFS have special handling for this flag.
		i.e. they will set it when the file changes.

sys/param.h:		Bump __FreeBSD_version to 1000047 for the
			addition of new stat(2) flags.

chflags.1:		Document the new command line flag names
			(e.g. "system", "hidden") available to the
			user.

ls.1:			Reference chflags(1) for a list of file flags
			and their meanings.

strtofflags.c:		Implement the mapping between the new
			command line flag names and new stat(2)
			flags.

chflags.2:		Document all of the new stat(2) flags, and
			explain the intended behavior in a little
			more detail.  Explain how they map to
			Windows file attributes.

			Different filesystems behave differently
			with respect to flags, so warn the
			application developer to take care when
			using them.

zfs_vnops.c:		Add support for getting and setting the
			UF_ARCHIVE, UF_READONLY, UF_SYSTEM, UF_HIDDEN,
			UF_REPARSE, UF_OFFLINE, and UF_SPARSE flags.

			All of these flags are implemented using
			attributes that ZFS already supports, so
			the on-disk format has not changed.

			ZFS currently doesn't allow setting the
			UF_REPARSE flag, and we don't really have
			the other infrastructure to support reparse
			points.

msdosfs_denode.c,
msdosfs_vnops.c:	Add support for getting and setting
			UF_HIDDEN, UF_SYSTEM and UF_READONLY
			in MSDOSFS.

			It supported SF_ARCHIVED, but this has been
			changed to be UF_ARCHIVE, which has the same
			semantics as the DOS archive attribute instead
			of inverse semantics like SF_ARCHIVED.

			After discussion with Bruce Evans, change
			several things in the msdosfs behavior:

			Use UF_READONLY to indicate whether a file
			is writeable instead of file permissions, but
			don't actually enforce it.

			Refuse to change attributes on the root
			directory, because it is special in FAT
			filesystems, but allow most other attribute
			changes on directories.

			Don't set the archive attribute on a directory
			when its modification time is updated.
			Windows and DOS don't set the archive attribute
			in that scenario, so we are now bug-for-bug
			compatible.

smbfs_node.c,
smbfs_vnops.c:		Add support for UF_HIDDEN, UF_SYSTEM,
			UF_READONLY and UF_ARCHIVE in SMBFS.

			This is similar to changes that Apple has
			made in their version of SMBFS (as of
			smb-583.8, posted on opensource.apple.com),
			but not quite the same.

			We map SMB_FA_READONLY to UF_READONLY,
			because UF_READONLY is intended to match
			the semantics of the DOS readonly flag.
			The MacOS X code maps both UF_IMMUTABLE
			and SF_IMMUTABLE to SMB_FA_READONLY, but
			the immutable flags have stronger meaning
			than the DOS readonly bit.

stat.h:			Add definitions for UF_SYSTEM, UF_SPARSE,
			UF_OFFLINE, UF_REPARSE, UF_ARCHIVE, UF_READONLY
			and UF_HIDDEN.

			The definition of UF_HIDDEN is the same as
			the MacOS X definition.

			Add commented-out definitions of
			UF_COMPRESSED and UF_TRACKED.  They are
			defined in MacOS X (as of 10.8.2), but we
			do not implement them (yet).

ufs_vnops.c:		Add support for getting and setting
			UF_ARCHIVE, UF_HIDDEN, UF_OFFLINE, UF_READONLY,
			UF_REPARSE, UF_SPARSE, and UF_SYSTEM in UFS.
			Alphabetize the flags that are supported.

			These new flags are only stored, UFS does
			not take any action if the flag is set.

Sponsored by:	Spectra Logic
Reviewed by:	bde (earlier version)
2013-08-21 23:04:48 +00:00
jilles
e5ea815310 sh: Remove unnecessary reset functions.
These are already handled by exception handlers.
2013-08-16 20:24:41 +00:00
jilles
c433419763 sh: Recognize "--" as end of options in bg/fg/jobid builtins. 2013-08-16 13:56:43 +00:00
jilles
c71191e0d9 sh: Recognize "--" as end of options in local builtin. 2013-08-14 21:59:48 +00:00
jilles
79360f25fc sh: Allow a lone redirection before '|', ';;' or ';&'.
Example: </dev/null | :

PR:		181240
MFC after:	1 week
2013-08-14 19:34:13 +00:00
trasz
9d86b16a9e Add -c flag to pgrep(1) and pkill(1), to match login classes.
MFC after:	1 month
2013-08-09 08:38:51 +00:00
jilles
44afceea6d sh: Remove an incorrect comment. 2013-07-25 20:50:35 +00:00
jilles
45d56acf59 sh: Remove #define MKINIT.
MKINIT only served for the removed mkinit. Many variables can be static now.
2013-07-25 19:48:15 +00:00
jilles
0ad2a46f33 sh: Remove mkinit.
Replace the RESET blocks with regular functions and a reset() function that
calls them all.

This code generation tool is unusual and does not appear to provide much
benefit. I do not think isolating the knowledge about which modules need to
be reset is worth an almost 500-line build tool and wider scope for
variables used by the reset functions.

Also, relying on reset functions is often wrong: the cleanup should be done
in exception handlers so that no stale state remains after 'command eval'
and the like.
2013-07-25 15:08:41 +00:00
jilles
34bfb313cd sh: Remove output.c's reset() handler.
These cleanup operations are not needed because they are already performed
after an optimized command substitution (whether there was an error or not).
2013-07-25 13:09:17 +00:00
jilles
e87e084ab7 sh: Do not read from stdin if an error occurs during -i -c cmd.
Although using -i with -c does not seem very useful, it seems inappropriate
to read commands from the terminal in this case.

Side effect: if the -s -c extension is used and the -s option is turned off
using 'set +s' during the interactive part, the shell now exits after an
error or interrupt. Note that POSIX only specifies -s as option to sh, not
to set.

See also Austin Group issue #718.
2013-07-12 15:29:41 +00:00
kientzle
e04f9d0055 Fix a -Wunsequenced warning.
Submitted by:	dt71@gmx.com
2013-06-29 15:49:26 +00:00
jilles
836c13641c sh: Do not close(-1) if pipe() fails. 2013-06-28 21:47:08 +00:00
jilles
ceb4b0c61b sh(1): A subshell environment has its own rlimits (ulimit).
This has always been the case and is intended (just like cd).

This matches Austin group issue #706.
2013-06-14 22:06:18 +00:00
jilles
077e1ba486 sleep: Explain in a comment why the [EINTR] check is there.
Suggested by:	eadler
2013-06-05 20:15:18 +00:00
jilles
7deb35147a sh(1): Document new features in wait builtin.
PR:		176916
2013-06-05 19:54:28 +00:00
jilles
34ac6a12ea sh: Return status 127 for unknown jobs in wait builtin.
This is required by POSIX, at least for pids that are not known child
processes.

Other problems with job specifications still cause wait to abort with
exit status 2.

PR:		176916
2013-06-05 19:40:52 +00:00
jilles
dbbdb077d8 sh: Allow multiple operands in wait builtin.
This is only part of the PR; the behaviour for unknown/invalid pids/jobs
remains unchanged (aborts the builtin with status 2).

PR:		176916
Submitted by:	Vadim Goncharov
2013-06-05 19:08:22 +00:00
eadler
0bf6af7fdd Add 'static' where able. 2013-06-02 17:55:00 +00:00
jilles
772c877e7b test(1): Add information about replacing -nt/-ot. 2013-05-31 22:57:04 +00:00
jilles
1009793c8f test(1): List non-standard primaries. 2013-05-31 22:55:21 +00:00
jilles
47380cf857 test: Remove -ntXY and -otXY primaries.
This reverts commit r247274.

As maintainer of sh, I disapprove of this feature addition.

It is too specific and can be done without easily using find(1) or stat(1).
I will add some hints to the test(1) man page shortly.

In general, FreeBSD sh is not the place to invent new shell language
features. This is how it has been maintained and adding features randomly
does not work with that.

The new syntax (e.g. [ FILE1 -ntca FILE2 ]) looks cryptic to me.
2013-05-31 22:54:20 +00:00
jilles
95192e8f55 sleep: Improve nanosleep() error handling:
* Work around kernel bugs that cause a spurious [EINTR] return if a
   debugger (such as truss(1)) is attached.

 * Write an error message if an error other than [EINTR] occurs.

PR:		bin/178664
2013-05-28 22:07:31 +00:00
grog
4f89fca99e Complete revision 243104. 2013-05-17 03:52:20 +00:00
delphij
9a44ba5a35 Constify parameters, no functional or binary change.
Verified with:	sha256(1)
MFC after:	2 weeks
2013-05-15 18:38:28 +00:00
joel
05a725b2d7 mdoc sweep. 2013-05-12 22:22:12 +00:00
jilles
e0dffd814f sh: Remove linked list of stack marks.
The linked list of stack marks may cause problems if the allocation stack is
used between an exception and a higher-level popstackmark(), as it may then
touch a stack mark that is local to a function which has returned.

Also, the adjustment compares to a pointer passed to realloc(), which is
undefined behaviour.

Instead of adjusting stack marks when reallocating stack blocks, ensure that
such an adjustment is never necessary by fixing a small piece of memory in
place at a stack mark. This also simplifies the code.

To avoid the problems reported in bin/175922, it remains necessary to call
setstackmark() after popstackmark() if the stack mark remains in use.
2013-05-11 20:51:00 +00:00
eadler
9f34a8fbd1 Make dd's signal handler async safe.
PR:		bin/75258
Submitted by:	"Oleg V. Nauman" <oleg@reis.zp.ua>
Arrival Date:	Sun Dec 19 14:50:21 GMT 2004
Reviewed by:	mjg, jhb
Reviewed by:	jilles (earlier version)
MFC after:	1 week
2013-05-10 18:43:36 +00:00
eadler
69c7d77aef Fix two typos
Reviewed by:	jilles
2013-05-09 21:29:16 +00:00
jilles
135786413b sh: Use O_CLOEXEC and F_DUPFD_CLOEXEC instead of separate fcntl() call. 2013-05-05 10:51:40 +00:00
jilles
3f27c69169 sh: Improve error handling in read builtin:
* If read -t times out, return status as if interrupted by SIGALRM
  (formerly 1).
* If a trapped signal interrupts read, return status 128+sig (formerly 1).
* If [EINTR] occurs but there is no trap, retry the read (for example
  because of a SIGWINCH in interactive mode).
* If a read error occurs, write an error message and return status 2.

As before, a variable assignment error returns 2 and discards the remaining
data read.
2013-05-03 15:28:31 +00:00
eadler
2da1028f21 Mark usage() __dead2 2013-04-28 22:52:43 +00:00
eadler
ab95cbf03e Remove cast that was only required for K&R C.
Reviewed by:	jilles
2013-04-28 22:05:01 +00:00
eadler
84376c209e Add missing static qualifiers
Reviewed by:	ed, jilles
MFC After:	3 days
2013-04-27 21:59:43 +00:00
jilles
9081eaa709 sh: Don't consider jobs -s/-p as reporting the status of jobs.
This ensures that something like j=$(jobs -p) does not prevent any
status from being written to the terminal.
2013-04-27 14:07:25 +00:00
eadler
18ab525779 Add two more 'static' qualifiers 2013-04-26 17:56:35 +00:00
eadler
b49ea837d6 Take some improvements from DragonFlyBSD:
- add const where appropriate
	- add static where appropriate
	- fix a whitespace issues

Reviewed by:	brooks
Obtained from:	DragonFlyBSD
MFC After:	1 week
2013-04-26 17:45:40 +00:00
eadler
d2cd9ce7fa Add -x option to avoid crossing mount points when removing a hierarchy.
Discussed on:	-hackers
Inspired by:	DragonflyBSD
MFC After:	1 week
2013-04-26 17:45:37 +00:00
uqs
7eab214452 Don't appease clang static analyzer after all and roll back
the free(3) of mntbuf ... again. There's no point in doing
useless extra work when we're about to exit.

See also r240565.

Not reading file history:	uqs
2013-04-26 12:27:30 +00:00
kib
f96ceb3029 Literally follow POSIX:
If the bs= expr operand is specified and no conversions other than sync,
noerror, or notrunc are requested, the data returned from each input
block shall be written as a separate output block.

In particular, when both bs=size and conv=sparce were specified, the
resulted file was fully filled, instead of sparce.

PR:	standards/177742
Submitted by:	Matthew Rezny <mrezny@hexaneinc.com>
MFC after:	2 weeks
2013-04-23 16:08:24 +00:00
eadler
54ee0fda1c - Add the __dead2 attribute since it is a function that never returns
- Add an empty line in usage() according to style(9)

PR:		bin/177076
Submitted by:	Fernando <fernando.apesteguia@gmail.com>
Approved by:	cperciva (mentor)
2013-04-23 13:03:11 +00:00
joel
eaf646d927 Point users towards nisdomainname and rc.conf.
PR:		144630
Submitted by:	Stefan Krueger <stadtkind2@gmx.de>,
		Fel <wtfcrap@mail.ru>
2013-04-22 17:55:12 +00:00
joel
1b87173706 Document a few expansions for the $PS1 and $PS2 environmental variables.
PR:		173410
Submitted by:	Derek Wood <ddwood@outlook.com>
Reviewed by:	jilles
2013-04-21 19:55:38 +00:00
uqs
53649a9504 bin/df: Fix unitialized use in prtstat
While here:
- use NULL in the context of pointers
- use memset instead of bzero throughout the file
- free memory to appease clang static analyzer

Found by:	Coverity Scan (the UNINIT one)
2013-04-20 12:41:05 +00:00
ken
9a543047eb Update chio(1) and ch(4) to support reporting element designators.
This allows mapping a tape drive in a changer (as reported by
'chio status') to a sa(4) driver instance by comparing the
serial numbers.

The designators can be ASCII (which is printed out directly), binary
(which is printed in hex format) or UTF-8, which is printed in either
native UTF-8 format if the terminal can support it, or in %XX notation
for non-ASCII characters.  Thanks to Hiroki Sato <hrs@> for the
explaining UTF-8 printing and example UTF-8 printing code.

chio.h:		Modify the changer_element_status structure to add new
		fields and definitions from the SMC3r16 spec.

		Rename the original CHIOGSTATUS ioctl to OCHIOGTATUS and
		define a new CHIOGSTATUS ioctl.

		Clean up some tab/space issues.

chio.c: 	For the 'status' subcommand, print the designator field
		if it is supplied by a device.

scsi_ch.h:	Add new flags for DVCID and CURDATA to the READ
		ELEMENT STATUS command structure.

		Add a read_element_status_device_id structure
		for the data fields in the new standard. Add new
		unions, dt_or_obsolete and voltage_devid, to hold
		and address data from either SCSI-2 or newer devices.

scsi_ch.c:	Implement support for fetching device IDs with READ
		ELEMENT STATUS data.

		Add new arguments to scsi_read_element_status() to
		allow the user to request the DVCID and CURDATA bits.
		This isn't compiled into libcam (it's only an internal
		kernel interface), so we don't need any special
		handling for the API change.

		If the user issues the new CHIOGSTATUS ioctl, copy all of
		the available element status data out.  If he issues the
		OCHIOGSTATUS ioctl, we don't copy the new fields in the
		structure.

		Fix a bug in chopen() that would result in the peripheral
		never getting unheld if chgetparams() failed.

Sponsored by:	Spectra Logic
Submitted by:	Po-Li Soong
MFC After:	1 week
2013-04-19 20:03:51 +00:00
ed
120125784a Add the Clang specific -Wmissing-variable-declarations to WARNS=6.
This compiler flag enforces that that people either mark variables
static or use an external declarations for the variable, similar to how
-Wmissing-prototypes works for functions.

Due to the fact that Yacc/Lex generate code that cannot trivially be
changed to not warn because of this (lots of yy* variables), add a
NO_WMISSING_VARIABLE_DECLARATIONS that can be used to turn off this
specific compiler warning.

Announced on:	toolchain@
2013-04-19 19:45:00 +00:00
jilles
8b20292658 sh: Don't modify exit status when break/continue/return passes !.
This matches what would happen if  ! P  were to be replaced with
if P; then false; else true; fi.

Example:
  f() { ! return 0; }; f
2013-04-12 15:19:35 +00:00
jilles
6990a1cb76 sh: Add const to nodesavestr(). 2013-04-07 16:28:36 +00:00
brooks
e241794c89 IFP4 change 222074.
Introduce an explicit close of the output descriptor so that work done
on close is accounted for in the summary output triggered at exit
(implicit close()s occur after atexit() hooks).

This is useful because some devices such as cfi(4) may perform
signficant work after a close occurs (e.g. erasing and rewriting a
block of flash).
2013-04-03 19:19:45 +00:00
jilles
7236eb0dda sh: Write as much into the heredoc pipe as possible, to avoid forking.
Use non-blocking I/O to write as much as the pipe will accept (often 64K,
but it can be as little as 4K), avoiding the need for the ugly PIPESIZE
constant. If PIPESIZE was set too high, a deadlock would occur.
2013-04-02 21:34:38 +00:00
jilles
3deb97fc0b sh: Fix various compiler warnings.
It now passes WARNS=7 with clang on i386.

GCC 4.2.1 does not understand setjmp() properly so will always trigger
-Wuninitialized. I will not add the volatile keywords to suppress this.
2013-04-01 17:18:22 +00:00
trasz
3b2ecc9e06 Mention that read_attributes, write_attributes, read_acl and write_acl
are always permitted for the file owner.

PR:		kern/174948
MFC after:	1 week
2013-04-01 13:17:28 +00:00
joel
2f6a71b3ae Minor mdoc fix. 2013-03-29 08:12:09 +00:00
jilles
e740fd1ca7 sh(1): Mention possible ambiguities with $(( and ((.
In some other shells, things like $((a);(b)) are command substitutions.

Also, there are shells that have an extension ((ARITH)) that evaluates an
arithmetic expression and returns status 1 if the result is zero, 0
otherwise. This extension may lead to ambiguity with two subshells starting
in sequence.
2013-03-24 22:48:45 +00:00
jmg
cd87adcccd Fix compiling ed w/ WITHOUT_ED_CRYPTO... These variables aren't
used..

Submitted by:   deeptech71 at gmail dot com
2013-03-23 19:04:57 +00:00
pjd
2a3cf7f364 - Make 'flags' argument to chflags(2), fchflags(2) and lchflags(2) of type
u_long. Before this change it was of type int for syscalls, but prototypes
  in sys/stat.h and documentation for chflags(2) and fchflags(2) (but not
  for lchflags(2)) stated that it was u_long. Now some related functions
  use u_long type for flags (strtofflags(3), fflagstostr(3)).
- Make path argument of type 'const char *' for consistency.

Discussed on:	arch
Sponsored by:	The FreeBSD Foundation
2013-03-21 22:44:33 +00:00
jilles
d967c25f5c sh: Recognize "--" and explicitly reject options in wait builtin.
If syntactically invalid job identifiers are to be taken as jobs that exited
with status 127, this should not apply to options, so that we can add
options later if need be.
2013-03-15 20:29:31 +00:00
joel
2ba67e203a Add a few examples.
Obtained from:	OpenBSD
2013-03-15 20:12:54 +00:00
jilles
d0155c5dcc sh: When executing a trap, keep exit status along with evalskip.
This ensures 'return' in a trap returns the correct status to the caller.

If evalskip is not set or if it is overridden by a previous evalskip, keep
the old behaviour of restoring the exit status from before the trap.
2013-03-03 17:33:59 +00:00
peterj
975818ab0c Enhance test(1) by adding provision to compare any combination of the
access, birth, change and modify times of two files, instead of only
being able to compare modify times.  The builtin test in sh(1) will
automagically acquire the same expansion.

Approved by:	grog
MFC after:	2 weeks
2013-02-25 19:05:40 +00:00
jilles
6d26f3b024 sh: If a SIGINT or SIGQUIT interrupts "wait", return status 128+sig. 2013-02-23 22:50:57 +00:00
jilles
d08a4b37f1 sh: Fix a crash with the stackmark code.
If a stack mark is set while the current stack block is empty, the stack
block may move later on (because of realloc()) and the stack mark needs to
be updated. This updating does not happen after popstackmark() has been
called; therefore, call setstackmark() again if the stack mark is still
being used.

For some reason, this only affects a few users. I cannot reproduce it. The
situation seems quite rare as well because an empty stack block would
usually be freed (by popstackmark()) before execution reaches a
setstackmark() call.

PR:		175922
Tested by:	KT Sin
2013-02-19 23:46:51 +00:00
trasz
57fb31bcdb Fix NFSv4 permission description in setfacl(1) manual page: the 'D'
means delete_child, not delete.

MFC after:	1 week
2013-02-08 18:43:47 +00:00
trasz
19b8d932d1 Improve description of the "-m" option to setfacl(1).
Submitted by:	scottl
MFC after:	1 week
2013-02-08 18:12:16 +00:00
trasz
2e7f4de812 In the setfacl(1) manual page, make it clear that for NFSv4 ACLs,
one should really use -a and -x instead of -m.

MFC after:	1 week
2013-02-08 18:02:28 +00:00
jilles
89d287b040 sh: Simplify mksyntax and make it fit for cross-compiling.
Now it outputs fixed files, which use constants provided by the C standard
library to determine appropriate values for the target machine.

Before, mksyntax inspected the host machine which resulted in subtle
breakage if e.g. char is signed on the host and unsigned on the target such
as when cross-compiling on x86 for ARM.

Tested using -funsigned-char on amd64. Compiling build-tools without it and
sh itself with it causes various tests to fail without this change but not
with this change. With consistent -funsigned-char, tests pass with or
without this change.

The mksyntax program could be removed and syntax.c and syntax.h committed to
the repository.

Submitted by:	Christoph Mallon
MFC after:	2 weeks
2013-02-07 22:42:33 +00:00
jilles
bb422352b5 sh: Fix a comment. 2013-02-07 21:24:10 +00:00
delphij
c27302a50c Catch TRACE parameters up with r238888. This change is only needed when
debugging is enabled.
2013-02-07 19:00:54 +00:00
kib
0ab90cb3f6 Document P_PPTRACE.
MFC after:	2 weeks
2013-02-07 15:37:51 +00:00
jilles
f923241b93 sh: Do not test for digit_contig in mksyntax.
ISO/IEC 9899:1999 (E) 5.2.1p3 guarantees that the values of the characters
0123456789 are contiguous.

The generated syntax.c and syntax.h remain the same.

Submitted by:	Christoph Mallon
2013-02-05 22:54:09 +00:00
jilles
6fa139d56e sh: Expand here documents in the current process.
Expand here documents at the same point other redirections are expanded but
use a non-fork subshell environment (like simple command substitutions) for
compatibility. Substitition errors result in an empty here document like
before.

As a result, a fork is avoided for short (<4K) expanded here documents.

Unexpanded here documents (with quoted end marker after <<) are not affected
by this change. They already only forked when >4K.

Side effects:
* Order of expansion is slightly different.
* Slow expansions are not executed in parallel with the redirected command.
* A non-fork subshell environment is subtly different from a forked process.
2013-02-03 15:54:57 +00:00
jilles
43d0e15091 sh: Prefer our character classification functions to <ctype.h>. 2013-01-31 22:10:57 +00:00
jilles
db77635860 sh: Show negated commands (!) in jobs output. 2013-01-31 21:50:44 +00:00
joel
f34880dfea Fix date. 2013-01-29 20:01:47 +00:00
brooks
9b3a8ec1ad Add -l option to cat(1). This option causes cat(1) to use fcntl(2) to
set an exclusive advisory lock on stdout.  This will be used to guarantee
orderly writing to METALOG.

Sponsored by:	DARPA, AFRL
Obtained from:	NetBSD (mason)
2013-01-29 18:19:40 +00:00
markj
9d3fe41880 Return with an error from copy_link(), copy_fifo() and copy_special() if
the -n option is specified and the destination file exists.

PR:		bin/174489
Approved by:	rstone (co-mentor)
MFC after:	2 weeks
2013-01-27 05:59:28 +00:00
delphij
92b7af27e6 Don't time travel back and use a present date.
Noticed by:	mckusick
2013-01-25 18:47:16 +00:00
delphij
9518b28c41 - Wrap long line;
- Add -, to SYNOPSIS section.

MFC after:	2 weeks
2013-01-24 05:36:37 +00:00
obrien
3a199e38e1 Return "failure" as we do for 'cp -i' and a "n" answer.
Otherwise with '-v' we print out the file name as if it was copied:
   /tmp/2gb-card/M0132.CTG not overwritten
   /mnt/DCIM/CANONMSC/M0132.CTG -> /tmp/2gb-card/M0132.CTG
2013-01-23 02:06:20 +00:00
joel
30cb6e2951 Add FILES section.
Discussed with:	jilles
2013-01-22 18:02:58 +00:00
joel
16ff7601a6 Change the $ENV example to use .shrc instead of .shinit. This is consistent
with what we use in /usr/share/skel/dot.profile.

Discussed with: jilles
2013-01-20 22:25:25 +00:00
jilles
81fe037601 sh: Move some stackmarks to fix high memory usage in some loops.
If a loop contained certain commands (such as redirected compound commands),
the temporary memory for the redirection was not freed between iterations of
the loop but only after the loop.

Put a stackmark in evaltree(), freeing memory whenever a node has been
evaluated. Some other stackmarks are then redundant; remove them.

Example:
  while :; do { :; } </dev/null; done
2013-01-20 21:28:05 +00:00
jilles
cbc4c398d4 sh: Remove mkinit's initialization routine.
Instead, call the only init function left directly from main().
2013-01-20 12:44:50 +00:00
jilles
3d71dcf315 sh: Replace an mkinit use with an initialization. 2013-01-19 22:12:08 +00:00
jhb
af6f5a9a49 - Move 'showthreads' check out of fmt.c.
- Update shadow copy of fmt_argv() prototype in w.c and fix calls for
  additional parameter.
2013-01-19 00:21:55 +00:00
jhb
a757b0e056 Include the thread name along with the command name when displaying the
command name of a thread from a multi-threaded process that doesn't have
an available argument list (such as kernel processes) and threads display
is enabled via -H.

Reviewed by:	alfred, delphij, eric@vangyzen.net
MFC after:	1 week
2013-01-18 18:24:40 +00:00
eadler
cbaafd7728 Remove useless variable 'Pflag':
-P is an alternative to -H and -L, and it is implemented using the Hflag and Lflag variables.

Approved by:	cperciva
MFC after:	3 days
2013-01-17 04:20:31 +00:00
delphij
9b39a88281 Use a different way to silence clang analyzer as done in r245494 by
explicitly telling the compiler that we are on the exit route.

X-MFC:	together with r245494
2013-01-16 18:15:25 +00:00
eadler
b3d8782481 Free memory before exiting in order to silence a warning from the clang
static analyzer

Approved by:	cperciva
MFC after: 	3 days
2013-01-16 05:03:52 +00:00
jilles
705fd8516a sh: Simplify cd-hash interaction.
Instead of rechecking relative paths for all hashed utilities after a cd,
track if any utility in cmdtable depends on a relative path in PATH.
If there is such a utility, cd clears the entire table.

As a result, the '*' in hash no longer happens.
2013-01-14 16:40:50 +00:00
jilles
d139340997 sh: Pass $? to command substitution containing compound/multiple commands.
Example:
  false; echo $(echo $?; :)
2013-01-14 12:20:55 +00:00
jilles
b479a582c3 sh: Fix crash when parsing '{ } &'.
MFC after:	1 week
2013-01-13 19:26:33 +00:00
jilles
1af5c5cc5f sh: Don't lose $? when backquoted command ends with semicolon or newline.
An empty simple command was added and overwrote the exit status with 0.

This affects `...` but not $(...).

Example:
  v=`false;`; echo $?
2013-01-13 19:19:40 +00:00
andrew
84aa559c28 When WCHAR_MIN == 0 the check if a wchar_t value will always be true. In
this case skip the test as gcc complains it is always true.
2013-01-06 02:50:38 +00:00
gjb
cb6e785025 Fix wording nit.
PR:		174787
Submitted by:	Cody Rank
MFC after:	3 days
2012-12-28 22:06:33 +00:00
jilles
e2e297c506 test(1): Document == alias for =.
Reviewed by:	gjb
Requested by:	gjb
MFC after:	1 week
2012-12-27 13:21:37 +00:00
jilles
da771ef7de sh: Prefer strsignal() to accessing sys_siglist directly.
Accessing sys_siglist directly requires rtld to copy it from libc to the sh
executable's BSS. Also, strsignal() will put in the signal number for
unknown signals (FreeBSD-specific) so we need not do that ourselves.

Unfortunately, there is no function for sys_signame.
2012-12-25 14:17:09 +00:00
kevlo
804c67a486 Fix socket calls on error post-r243965.
Submitted by:	Garrett Cooper
2012-12-21 15:54:13 +00:00
jilles
e5dd01ef24 sh: Detect and flag write errors on stdout in builtins.
If there is a write error on stdout, a message will be printed (to stderr)
and the exit status will be changed to 2 if it would have been 0 or 1.

PR:		bin/158206
2012-12-12 22:01:10 +00:00
pjd
c03248a464 Use kern.max_pid sysctl to obtain maximum PID number instead of using local
define.

Reviewed by:	jhb
2012-12-12 15:45:03 +00:00
grog
6b6f1383a6 Handle large negative block counts correctly.
MFC after:	 2 weeks
2012-12-12 04:18:25 +00:00
grog
5de282f23d Update man pages and clarify a number of options.
Rework block count calculations to work correctly with small "block" sizes.

MFC after:	14 days
2012-11-16 03:33:34 +00:00
pluknet
a6bdbf2843 Fix section number for pstat and swapinfo cross references.
MFC after:	3 days
2012-11-15 21:22:50 +00:00
eadler
5649923ed0 Follow the behavior as specified in POSIX:
if (exists AND (NOT f_option) AND
	((not_writable AND input_is_terminal) OR i_option))
		prompt

in particular, add the test for input_is_terminal

PR:		bin/173039
Submitted by:	Mark Johnston <markjdb@gmail.com>
Approved by:	cperciva
MFC after:	3 days
2012-11-15 15:05:51 +00:00
grog
f51ddfd74d Add , (comma) option to print sizes grouped and separated by thousands
using the non-monetary separator returned by localeconv(3), typically
a comma or period.

MFC after:  14 days
2012-11-15 03:39:21 +00:00
jilles
bba3ac5a32 sh: Remove an unused variable. 2012-11-14 14:08:24 +00:00
jilles
be4aea389c sh: Forward-declare struct alias instead of giving up type safety via void * 2012-11-11 15:13:24 +00:00
peter
0a19b1f1d4 Undo over-aggressive conversion of spaces to tabs. ie: those within
format strings, "period, space, space" in comment text, etc.
2012-11-09 20:19:56 +00:00
grog
d5943d9209 Replace spaces with tabs where appropriate.
Reminded by: jh@
2012-11-08 23:45:19 +00:00
jilles
9009053e85 sh: Fix two issues when an alias is redefined:
* The last character is not displayed.
 * If the alias ends with itself (as a word), an infinite memory-eating loop
   occurs.

If an alias is defined initially, a space is appended to avoid recursion but
this did not happen when an alias was later modified.

PR:		bin/173418
Submitted by:	Daniel F.
MFC after:	1 week
2012-11-08 13:33:48 +00:00
grog
9c0bd42e1e Add y flag and environment variable LS_SAMESORT to specify the same
sorting order for time and name with the -t option.  IEEE Std 1003.2
(POSIX.2) mandates that the -t option sort in descending order, and
that if two files have the same timestamp, they should be sorted in
ascending order of their names.  The -r flag reverses both of these
sort orders, so they're never the same.  This creates significant
problems for sequentially named files stored on FAT file systems,
where it can be impossible to list them in the order in which they
were created.

Add , (comma) option to print file sizes grouped and separated by
thousands using the non-monetary separator returned by localeconv(3),
typically a comma or period.

MFC after:  14 days
2012-11-08 00:24:26 +00:00
grog
c0efff79f9 Sort option parsing as far as practical. 2012-11-07 23:37:24 +00:00
jilles
aef0db8f9e sh: Change cmdtype in tblentry from short to signed char.
If this is a smaller type than int anyway, we can make it the smallest
possible.
2012-11-05 17:52:18 +00:00
jilles
abfb4133f0 sh: Use C99 flexible array instead of accessing array beyond bounds.
Although sufficient memory is available for a longer string in cmdname,
this is undefined behaviour anyway.

Side effect: for alignment reasons, an additional byte of memory is
allocated per hashed command.
2012-11-03 22:23:08 +00:00
joel
2f363dd858 Add a couple of examples.
Obtained from:	OpenBSD
2012-11-02 22:32:47 +00:00
ed
c23d2a42d7 More -Wmissing-variable-declarations fixes.
In addition to adding missing `static' keywords:
- bin/dd: Pull in `extern.h' to guarantee consistency with source file.
- libexec/rpc.rusersd: Move shared globals into an extern.h.
- libexec/talkd: Move `debug' and `hostname' into extern.h.
- usr.bin/cksum: Put counters in extern.h, as they are used by ckdist/mtree.
- usr.bin/m4: Move `end_result' into extern.h.
- usr.sbin/services_mkdb: Move shared globals into an extern.h.
2012-10-20 10:33:15 +00:00
ed
af31e8843c More -Wmissing-variable-declarations fixes.
In addition to adding `static' where possible:

- bin/date: Move `retval' into extern.h to make it visible to date.c.
- bin/ed: Move globally used variables into ed.h.
- sbin/camcontrol: Move `verbose' into camcontrol.h and fix shadow warnings.
- usr.bin/calendar: Remove unneeded variables.
- usr.bin/chat: Make `line' local instead of global.
- usr.bin/elfdump: Comment out unneeded function.
- usr.bin/rlogin: Use _Noreturn instead of __dead2.
- usr.bin/tset: Pull `Ospeed' into extern.h.
- usr.sbin/mfiutil: Put global variables in mfiutil.h.
- usr.sbin/pkg: Remove unused `os_corres'.
- usr.sbin/quotaon, usr.sbin/repquota: Remove unused `qfname'.
2012-10-19 14:49:42 +00:00
ed
fbb83e78c0 Fix warnings found by -Wmising-variable-declarations.
This self-written compiler warning, which is hopefully going to be
committed into LLVM sources soon, warns about potentially missing
`static' keywords, similar to -Wmissing-prototypes.

- bin/pax: Move external declaration of chdname and s_mask into extern.h.
- bin/setfacl: Move setfacl.c-specific stuff out of setfacl.h.
- sbin/mount_fusefs: Remove char *progname; use getprogname().
- others: add `static' where possible.
2012-10-19 05:43:38 +00:00
joel
72961fb7f5 mdoc: don't nest displays. The markup here isn't adding anything anyway.
Fixes a mandoc lint warning.

Discussed with:	brueffer, Jason McIntyre <jmc@kerhand.co.uk>
2012-10-14 13:59:17 +00:00
mdf
8ce8b3ae17 Fix bin/ build with a 64-bit ino_t.
Original code by:	Gleb Kurtsou
2012-09-27 23:31:12 +00:00
zont
bc5f114a7a - Bump date.
Submitted by:	pluknet
Approved by:	kib (mentor)
X-MFC-With:	r240645
2012-09-18 13:24:14 +00:00
zont
4d6eea92c0 - Add 'dsiz' and 'ssiz' keywords to show data and stack size respectively.
Approved by:	kib (mentor)
MFC after:	1 week
2012-09-18 12:25:14 +00:00
eadler
fdc252682f Revert 240527:
mntbuf can poit to memory allocated by getmntinfo(3) which can't be freed

PR:		bin/171634
Approved by:	cperciva (implicit)
2012-09-16 16:08:20 +00:00
jilles
99ca87dd2d sh: Prefer internal nextopt() to libc getopt().
This reduces code duplication and code size.

/usr/bin/printf is not affected.

Side effect: different error messages when certain builtins are passed
invalid options.
2012-09-15 21:56:30 +00:00
eadler
6aa506d6c7 Free memory before exiting in order to
help tools understand that we're not leaking it.

PR:		bin/171634
Submitted by:	Erik Cederstrand <erik@cederstrand.dk>
Approved by:	cperciva
MFC after:	3 days
2012-09-14 23:47:23 +00:00
jilles
126621e68f sh: Reduce code duplication: use setinputfile instead of open/setinputfd
combination.

MFC after:	2 weeks
2012-09-14 15:22:15 +00:00
joel
2c9fc028f5 Minor mdoc fix. 2012-09-11 17:57:03 +00:00
jilles
88d1219324 sh: Remove XXX comment about removing nextopt().
Using nextopt() avoids depending on the BSD-specific optreset feature in
getopt() and reduces code size (both source and binary).
2012-09-08 19:24:03 +00:00
kevlo
8c350d5569 Use "e.g.", not "i.e.", to introduce an example.
Obtained from:	NetBSD
2012-09-07 09:00:25 +00:00
trasz
b357c43c75 Explicitly mention that "cp -p" copies ACLs.
PR:		docs/168962
MFC after:	1 month
2012-09-04 12:27:23 +00:00
trasz
9e473fee55 Fix an error in setfacl(1) that manifested like this:
# setfacl -m u:trasz:rwx x
# setfacl -m u:root:rwx x
# getfacl x
# file: x
# owner: root
# group: wheel
user::rw-
user:root:rwx
user:trasz:rwx
group::r--
mask::rwx
other::r--
# setfacl -m u:root:rwx x
setfacl: x: acl_calc_mask() failed: Invalid argument
setfacl: x: failed to set ACL mask

For NFSv4 ACLs, this sort of situation would result in duplicated
entries.

MFC after:	1 month
2012-09-04 12:19:34 +00:00
trasz
7b532e0b89 In getfacl(1) manual page, mention where to read about the ACL syntax.
PR submitter suggested adding it to acl(3) instead, but I don't think
pointing ordinary users at section 3 is a good idea.

PR:		docs/162380
MFC after:	1 month
2012-09-04 12:02:23 +00:00
trasz
d6100248e1 Make "setfacl -bd" an alias for "setfacl -k". Previously it would crash
on assert.

PR:		bin/165807
MFC after:	1 month
2012-09-04 11:50:13 +00:00
trasz
510edf439e Make setfacl(1) behave properly in situations like "setfacl -kd".
MFC after:	1 month
2012-09-04 11:43:00 +00:00
trasz
0d3b3bd793 Fix compact form of "synchronize" permission in setfacl(1) manual page - it
should be "s", not "S".

PR:		docs/162380
MFC after:	2 weeks
2012-09-03 17:26:20 +00:00
ed
02dcf28b58 Rework all non-contributed files that use `struct timezone'.
This structure is not part of POSIX. According to POSIX, gettimeofday()
has the following prototype:

	int gettimeofday(struct timeval *restrict tp, void *restrict tzp);

Also, POSIX states that gettimeofday() shall return 0 (as long as tzp is
not used). Remove dead error handling code. Also use NULL for a
nul-pointer instead of integer 0.

While there, change all pieces of code that only use tv_sec to use
time(3), as this provides less overhead.
2012-09-01 14:45:15 +00:00
jhb
55d653d5f9 Add a -h flag similar to the -h flag for ln to force mv(1) to treat a
symbolic link to a directory for the target as a symbolic link instead of
a directory.  This makes it possible to atomically update a symbolic
link using rename().

Reviewed by:	gj
MFC after:	2 weeks
2012-08-31 14:35:01 +00:00
emaste
87db19685b Avoid passing uninitialized stack to addelem() if called with an empty arg.
PR:		bin/171174
2012-08-29 21:38:34 +00:00
jilles
0df7adbcbe sh: Fix EINTR race condition in "wait" and "set -T" using sigsuspend().
When waiting for child processes using "wait" or if "set -T" is in effect, a
signal interrupts the wait. Make sure there is no window where the signal
handler may be invoked (setting a flag) just before going to sleep.

There is a similar race condition in the shell language, but scripts can
avoid it by exiting from the trap handler or enforcing synchronization using
a fifo.

If SIGCHLD is not trapped, a signal handler must be installed for it. Only
install this handler for the duration of the wait to avoid triggering
unexpected [EINTR] errors elsewhere.

Note that for some reason only SIGINT and SIGQUIT interrupt a "wait"
command. This remains the case.
2012-07-29 18:04:38 +00:00
jilles
68e92f2ba9 sh: Do not ask for stopped/continued processes if we do not need them
rather than retrying wait3 if they happen.
2012-07-28 15:13:48 +00:00
jilles
acf68e5eb4 sh: Inline waitproc() into its only caller. 2012-07-28 14:56:50 +00:00
jilles
d73fbcf117 sh: Track continued jobs (even if not continued by bg or fg).
This uses wait3's WCONTINUED flag.

There is no message for this. The change is visible in "jobs" or if the job
stops again.
2012-07-28 14:32:55 +00:00
jh
c64014573d Use proper error message when fstat(2) fails on stdout.
PR:		bin/159746
Submitted by:	Alex K.
2012-07-20 08:33:23 +00:00
jh
0fdc094d92 style(9). 2012-07-20 08:31:36 +00:00
jilles
75e8bdba0b stty: Mark usage() __dead2.
This reduces code size a little and should fix a scan-build warning.
2012-07-15 21:12:22 +00:00
jilles
7996e743fa ps: Fix memory leak when showing start/lstart for swapped-out process.
Spotted by:	scan-build (uqs)
2012-07-15 15:22:13 +00:00
jilles
9ceedcafff sh: Reset pendingsigs before checking pending traps, not after.
Otherwise, a signal arriving at exactly the right moment might not be
processed until another signal arrived.
2012-07-15 11:18:52 +00:00
jilles
4d945ad412 sh: Remove unused variable in_dowait. 2012-07-15 10:49:16 +00:00
jilles
689774f8e7 sh: Expand assignment-like words specially for export/readonly/local.
Examples:
  export x=~
now expands the tilde
  local y=$1
is now safe, even if $1 contains IFS characters or metacharacters.

For a word to "look like an assignment", it must start with a name followed
by an equals sign, none of which may be quoted.

The special treatment applies when the first word (potentially after
"command") is "export", "readonly" or "local". There may be quoting
characters but no expansions. If "local" is overridden with a function there
is no special treatment ("export" and "readonly" cannot be overridden with a
function).

If things like
  local arr=(1 2 3)
are ever allowed in the future, they cannot call a "local" function. This
would either be a run-time error or it would call the builtin.

This matches Austin Group bug #351, planned for the next issue of POSIX.1.

PR:		bin/166771
2012-07-15 10:19:43 +00:00
pfg
676e6cd9af Merge libedit adjustment from NetBSD.
On recent versions of NetBSD's libedit, el_gets
now sets el_len to -1 on error so we can
distinguish between a NULL string and an error.

This fixes sh from exiting with newer versions
of libedit now allowing EINTR to return.

Obtained from:	NetBSD
Reviewed by:	jilles
MFC after:	3 weeks
2012-07-11 22:17:58 +00:00
delphij
0dbfe1d7aa Polish previous revision: if the fts_* routines have lstat()'ed the
directory entry then use the struct stat from that instead of doing
it again, and skip the rm_overwrite() call if fts_read() indicated
that the entry couldn't be a regular file.

Obtained from:	OpenBSD
MFC after:	1 week
2012-06-20 21:10:38 +00:00
kevlo
592e847dfe Fix potential symlink race condition in "rm -P" by adding a check
that the file we have opened is the one we expected.  Also open in
non-blocking mode to avoid a potential hang with FIFOs.

Obtained from:	NetBSD via OpenBSD
2012-06-20 02:21:53 +00:00
des
307fcde100 None of these programs actually use auth.conf.
MFC after:	1 week
2012-06-11 16:18:39 +00:00
marcel
e7223eeffb Work better with how make/bmake works:
1.  Avoid a cd back into ${.CURDIR} to run mkbuiltins when we know make
    will first cd into ${.OBJDIR}. Keep the cwd to what make sets it to.
2.  Don't tell mkbuiltins where to write to (= ${.OBJDIR}), but where to
    get sources from (= ${.CURDIR}). This to compensate for point 1.

This fixes a problem with bmake's mk files that optimize ${.OBJDIR} to
expand to "." after changing cwd, not taking into account that the
target is pretty much undoing that and not getting the full path to the
object tree anymore.
2012-05-24 19:48:15 +00:00
kib
01c4156d22 Add 'cow' keyword to show per-process cow count.
Submitted by:	Andrey Zonov <andrey zonov org>
MFC after:	1 week
2012-05-23 18:11:36 +00:00
wblock
e208a5f890 Mention the upper hard limit for -n option. Patch slightly modified
from PR version.

PR:		168255
Submitted by:	Andy Kosela
Approved by:	gjb
MFC after:	3 days
2012-05-23 16:19:19 +00:00
kevlo
73776eede3 Remove redundant declaration of yyparse
Reported by:	tinderbox
2012-05-22 03:01:54 +00:00
marcel
23744f4adf Add build opton MK_LS_COLORS to control whether ls(1) supports colors
(and thus needs to depend on libtermcap). Embedded systems may not
want or need colors.

Obtained from:	Juniper Networks, Inc.
2012-05-19 18:05:00 +00:00
marcel
c2132f894f Add build option MK_ED_CRYPTO to control whether ed(1) is to have the
ability to encrypt/decrypt files. Embedded systems can typically have
OpenSSL, but not for ed(1) to use it.

Obtained from:	Juniper Networks, Inc.
2012-05-19 17:55:49 +00:00
marcel
6bbc518f30 Remove unused header (libutil.h) 2012-05-17 20:29:15 +00:00
jilles
5d003d3cdb sh: Remove an unused header.
The read builtin no longer does things with termios.
2012-05-15 22:50:47 +00:00