d/freebsd-dev
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
970d454f63
freebsd-dev/bin/sh/builtins.def

97 lines
3.2 KiB
Modula-2
Raw Normal View History

Import the 4.4BSD-Lite2 /bin/sh sources Requested by: joerg (Note, this is mostly going to be conflicts, which is expected. Our entire sh source has a mainline, so this should not change anything except for a few new files appearing. I dont think they are a problem)
1996-05-27 01:41:12 +00:00
#!/bin/sh -
/*- or .\"- or #- to begin license clauses.
2005-01-10 08:39:26 +00:00
#-
Import the 4.4BSD-Lite2 /bin/sh sources Requested by: joerg (Note, this is mostly going to be conflicts, which is expected. Our entire sh source has a mainline, so this should not change anything except for a few new files appearing. I dont think they are a problem)
1996-05-27 01:41:12 +00:00
# Copyright (c) 1991, 1993
# The Regents of the University of California. All rights reserved.
#
# This code is derived from software contributed to Berkeley by
# Kenneth Almquist.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
Renumber copyright clause 4 Renumber cluase 4 to 3, per what everybody else did when BSD granted them permission to remove clause 3. My insistance on keeping the same numbering for legal reasons is too pedantic, so give up on that point. Submitted by: Jan Schaumann <jschauma@stevens.edu> Pull Request: https://github.com/freebsd/freebsd/pull/96
2017-02-28 23:42:47 +00:00
# 3. Neither the name of the University nor the names of its contributors
Import the 4.4BSD-Lite2 /bin/sh sources Requested by: joerg (Note, this is mostly going to be conflicts, which is expected. Our entire sh source has a mainline, so this should not change anything except for a few new files appearing. I dont think they are a problem)
1996-05-27 01:41:12 +00:00
# may be used to endorse or promote products derived from this software
# without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.
#
# @(#)builtins.def 8.4 (Berkeley) 5/4/95
$Id$ -> $FreeBSD$
1999-08-27 23:15:48 +00:00
# $FreeBSD$
Import the 4.4BSD-Lite2 /bin/sh sources Requested by: joerg (Note, this is mostly going to be conflicts, which is expected. Our entire sh source has a mainline, so this should not change anything except for a few new files appearing. I dont think they are a problem)
1996-05-27 01:41:12 +00:00
#
# This file lists all the builtin commands. The first column is the name
Use -s to flag POSIX's "special built-in" utilities in builtins.def. Add a 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)
2006-04-02 18:43:33 +00:00
# of a C routine.
# The -j flag specifies that this command is to be excluded from systems
# without job control.
# The -h flag specifies that this command is to be excluded from systems
# based on the NO_HISTORY compile-time symbol.
Allow defining nofork builtins from builtins.def and move always-safe ones there. The generated code remains the same. Reviewed by: jilles Differential Revision: https://reviews.freebsd.org/D11042
2017-06-04 21:02:48 +00:00
# The -n flag specifies that this command can safely be run in the same
# process when it is the only command in a command substitution. Some
# commands have special logic defined in safe_builtin().
Use -s to flag POSIX's "special built-in" utilities in builtins.def. Add a 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)
2006-04-02 18:43:33 +00:00
# The -s flag specifies that this is a POSIX 'special built-in' command.
# The rest of the line specifies the command name or names used to run the
# command. The entry for bltincmd, which is run when the user does not specify
# a command, must come first.
Import the 4.4BSD-Lite2 /bin/sh sources Requested by: joerg (Note, this is mostly going to be conflicts, which is expected. Our entire sh source has a mainline, so this should not change anything except for a few new files appearing. I dont think they are a problem)
1996-05-27 01:41:12 +00:00
#
# NOTE: bltincmd must come first!
Allow defining nofork builtins from builtins.def and move always-safe ones there. The generated code remains the same. Reviewed by: jilles Differential Revision: https://reviews.freebsd.org/D11042
2017-06-04 21:02:48 +00:00
bltincmd -n builtin
Sort.
2005-12-04 20:01:48 +00:00
aliascmd alias
Import the 4.4BSD-Lite2 /bin/sh sources Requested by: joerg (Note, this is mostly going to be conflicts, which is expected. Our entire sh source has a mainline, so this should not change anything except for a few new files appearing. I dont think they are a problem)
1996-05-27 01:41:12 +00:00
bgcmd -j bg
Sort.
2005-12-04 20:01:48 +00:00
bindcmd bind
Use -s to flag POSIX's "special built-in" utilities in builtins.def. Add a 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)
2006-04-02 18:43:33 +00:00
breakcmd -s break -s continue
Import the 4.4BSD-Lite2 /bin/sh sources Requested by: joerg (Note, this is mostly going to be conflicts, which is expected. Our entire sh source has a mainline, so this should not change anything except for a few new files appearing. I dont think they are a problem)
1996-05-27 01:41:12 +00:00
cdcmd cd chdir
Allow defining nofork builtins from builtins.def and move always-safe ones there. The generated code remains the same. Reviewed by: jilles Differential Revision: https://reviews.freebsd.org/D11042
2017-06-04 21:02:48 +00:00
commandcmd -n command
Use -s to flag POSIX's "special built-in" utilities in builtins.def. Add a 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)
2006-04-02 18:43:33 +00:00
dotcmd -s .
Allow defining nofork builtins from builtins.def and move always-safe ones there. The generated code remains the same. Reviewed by: jilles Differential Revision: https://reviews.freebsd.org/D11042
2017-06-04 21:02:48 +00:00
echocmd -n echo
Use -s to flag POSIX's "special built-in" utilities in builtins.def. Add a 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)
2006-04-02 18:43:33 +00:00
evalcmd -s eval
execcmd -s exec
exitcmd -s exit
sh: Remove the "exp" builtin. The "exp" builtin is undocumented, non-standard and not very useful. If exp's return value is not used, something like VAR=$(exp EXPRESSION) is equivalent to VAR=$((EXPRESSION)) except that errors in the expression are fatal and quoting special characters is not needed in the latter case. If exp's return value is used, something like if exp EXPRESSION >/dev/null can be replaced by if [ $((EXPRESSION)) -ne 0 ] with similar differences. The exp-run showed that "let" is close enough to bash's and ksh's builtin that removing it would break a few ports. Therefore, "let" remains in 9.x. PR: bin/104432 Exp-run done by: pav (with some other sh(1) changes)
2011-05-27 20:53:07 +00:00
letcmd let
Use -s to flag POSIX's "special built-in" utilities in builtins.def. Add a 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)
2006-04-02 18:43:33 +00:00
exportcmd -s export -s readonly
Make test(1) a builtin command of our sh(1) for efficiency. The binary size increase is 3,784 bytes (about 0.6%). I don't drop the printf builtin while I'm here because some /etc/rc.* scripts seem to use it before mounting /usr where printf(1) resides. Reviewed by: arch (sheldonh) Inspired by: NetBSD, ksh Clued by: ume (on how the printf builtin is used)
2001-11-17 19:10:11 +00:00
#exprcmd expr
Allow defining nofork builtins from builtins.def and move always-safe ones there. The generated code remains the same. Reviewed by: jilles Differential Revision: https://reviews.freebsd.org/D11042
2017-06-04 21:02:48 +00:00
falsecmd -n false
Import the 4.4BSD-Lite2 /bin/sh sources Requested by: joerg (Note, this is mostly going to be conflicts, which is expected. Our entire sh source has a mainline, so this should not change anything except for a few new files appearing. I dont think they are a problem)
1996-05-27 01:41:12 +00:00
fgcmd -j fg
wordexp: Rewrite to make WRDE_NOCMD reliable. Shell syntax is too complicated to detect command substitution and unquoted operators reliably without implementing much of sh's parser. Therefore, have sh do this detection. While changing sh's support anyway, also read input from a pipe instead of arguments to avoid {ARG_MAX} limits and improve privacy, and output count and length using 16 instead of 8 digits. The basic concept is: execl("/bin/sh", "sh", "-c", "freebsd_wordexp ${1:+\"$1\"} -f "$2", "", flags & WRDE_NOCMD ? "-p" : "", <pipe with words>); The WRDE_BADCHAR error is still implemented in libc. POSIX requires us to fail strings containing unquoted braces with code WRDE_BADCHAR. Since this is normally not a syntax error in sh, there is still a need for checking code in libc, we_check(). The new we_check() is an optimistic check that all the characters <newline> | & ; < > ( ) { } are quoted. To avoid duplicating too much sh logic, such characters are permitted when quoting characters are seen, even if the quoting characters may themselves be quoted. This code reports all WRDE_BADCHAR errors; bad characters that get past it and are a syntax error in sh return WRDE_SYNTAX. Although many implementations of WRDE_NOCMD erroneously allow some command substitutions (and ours even documented this), there appears to be code that relies on its security (codesearch.debian.net shows quite a few uses). Passing untrusted data to wordexp() still exposes a denial of service possibility and a fairly large attack surface. Reviewed by: wblock (man page only) MFC after: 2 weeks Relnotes: yes Security: fixes command execution with wordexp(untrusted, WRDE_NOCMD)
2015-09-30 21:32:29 +00:00
freebsd_wordexpcmd freebsd_wordexp
Import the 4.4BSD-Lite2 /bin/sh sources Requested by: joerg (Note, this is mostly going to be conflicts, which is expected. Our entire sh source has a mainline, so this should not change anything except for a few new files appearing. I dont think they are a problem)
1996-05-27 01:41:12 +00:00
getoptscmd getopts
hashcmd hash
Sort.
2005-12-04 20:01:48 +00:00
histcmd -h fc
Allow defining nofork builtins from builtins.def and move always-safe ones there. The generated code remains the same. Reviewed by: jilles Differential Revision: https://reviews.freebsd.org/D11042
2017-06-04 21:02:48 +00:00
jobidcmd -n jobid
jobscmd -n jobs
killcmd -n kill
Import the 4.4BSD-Lite2 /bin/sh sources Requested by: joerg (Note, this is mostly going to be conflicts, which is expected. Our entire sh source has a mainline, so this should not change anything except for a few new files appearing. I dont think they are a problem)
1996-05-27 01:41:12 +00:00
localcmd local
Allow defining nofork builtins from builtins.def and move always-safe ones there. The generated code remains the same. Reviewed by: jilles Differential Revision: https://reviews.freebsd.org/D11042
2017-06-04 21:02:48 +00:00
printfcmd -n printf
pwdcmd -n pwd
Import the 4.4BSD-Lite2 /bin/sh sources Requested by: joerg (Note, this is mostly going to be conflicts, which is expected. Our entire sh source has a mainline, so this should not change anything except for a few new files appearing. I dont think they are a problem)
1996-05-27 01:41:12 +00:00
readcmd read
Use -s to flag POSIX's "special built-in" utilities in builtins.def. Add a 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)
2006-04-02 18:43:33 +00:00
returncmd -s return
setcmd -s set
Import the 4.4BSD-Lite2 /bin/sh sources Requested by: joerg (Note, this is mostly going to be conflicts, which is expected. Our entire sh source has a mainline, so this should not change anything except for a few new files appearing. I dont think they are a problem)
1996-05-27 01:41:12 +00:00
setvarcmd setvar
Use -s to flag POSIX's "special built-in" utilities in builtins.def. Add a 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)
2006-04-02 18:43:33 +00:00
shiftcmd -s shift
Allow defining nofork builtins from builtins.def and move always-safe ones there. The generated code remains the same. Reviewed by: jilles Differential Revision: https://reviews.freebsd.org/D11042
2017-06-04 21:02:48 +00:00
testcmd -n test [
timescmd -n -s times
Use -s to flag POSIX's "special built-in" utilities in builtins.def. Add a 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)
2006-04-02 18:43:33 +00:00
trapcmd -s trap
Allow defining nofork builtins from builtins.def and move always-safe ones there. The generated code remains the same. Reviewed by: jilles Differential Revision: https://reviews.freebsd.org/D11042
2017-06-04 21:02:48 +00:00
truecmd -n -s : true
typecmd -n type
Sort.
2005-12-04 20:01:48 +00:00
ulimitcmd ulimit
Import the 4.4BSD-Lite2 /bin/sh sources Requested by: joerg (Note, this is mostly going to be conflicts, which is expected. Our entire sh source has a mainline, so this should not change anything except for a few new files appearing. I dont think they are a problem)
1996-05-27 01:41:12 +00:00
umaskcmd umask
unaliascmd unalias
Use -s to flag POSIX's "special built-in" utilities in builtins.def. Add a 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)
2006-04-02 18:43:33 +00:00
unsetcmd -s unset
Import the 4.4BSD-Lite2 /bin/sh sources Requested by: joerg (Note, this is mostly going to be conflicts, which is expected. Our entire sh source has a mainline, so this should not change anything except for a few new files appearing. I dont think they are a problem)
1996-05-27 01:41:12 +00:00
waitcmd wait
Add the "wordexp" shell built-in command which will be used to implement the POSIX wordexp() function.
2002-12-26 14:28:54 +00:00
wordexpcmd wordexp
Reference in New Issue Copy Permalink