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267654 |
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19-Jun-2014 |
gjb |
Copy stable/9 to releng/9.3 as part of the 9.3-RELEASE cycle.
Approved by: re (implicit) Sponsored by: The FreeBSD Foundation |
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264629 |
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17-Apr-2014 |
jilles |
MFC r263777: sh: Fix possible memory leaks and double frees with unexpected SIGINT.
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264423 |
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13-Apr-2014 |
jilles |
MFC r238468: 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 $1 contains IFS characters or metacharacters.
For a word to "look like an assignment", it must start with a name followed by an equals sign, none of which may be quoted.
The special treatment applies when the first word (potentially after "command") is "export", "readonly" or "local". There may be quoting characters but no expansions. If "local" is overridden with a function there is no special treatment ("export" and "readonly" cannot be overridden with a function).
If things like local arr=(1 2 3) are ever allowed in the future, they cannot call a "local" function. This would either be a run-time error or it would call the builtin.
This matches Austin Group bug #351, planned for the next issue of POSIX.1.
As for the MFC, it is easy to depend on this feature inadvertently, and adding this fixes a regression from stable/8 that may be apparent in things like local x=${y+a @}.
PR: bin/166771 Relnotes: yes
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231790 |
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15-Feb-2012 |
jilles |
MFC r229220: sh: Make various functions static.
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225736 |
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22-Sep-2011 |
kensmith |
Copy head to stable/9 as part of 9.0-RELEASE release cycle.
Approved by: re (implicit)
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218324 |
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05-Feb-2011 |
jilles |
sh: Remove clearcmdentry()'s now unused argument.
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#
218323 |
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05-Feb-2011 |
jilles |
sh: Forget all cached command locations on any PATH change.
POSIX requires this and it is simpler than the previous code that remembered command locations when appending directories to PATH.
In particular, PATH=$PATH is no longer a no-op but discards all cached command locations.
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#
218320 |
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05-Feb-2011 |
jilles |
sh: Do not try to execute binary files as scripts.
If execve() returns an [ENOEXEC] error, check if the file is binary before trying to execute it using sh. A file is considered binary if at least one of the first 256 bytes is '\0'.
In particular, trying to execute ELF binaries for the wrong architecture now fails with an "Exec format error" message instead of syntax errors and potentially strange results.
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218306 |
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04-Feb-2011 |
jilles |
sh: Remove special code for shell scripts without magic number.
These are called "shell procedures" in the source.
If execve() failed with [ENOEXEC], the shell would reinitialize itself and execute the program as a script. This requires a fair amount of code which is not frequently used (most scripts have a #! magic number). Therefore just execute a new instance of sh (_PATH_BSHELL) to run the script.
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#
218242 |
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03-Feb-2011 |
jilles |
sh: Return only 126 or 127 for execve() failures.
Do not return 2 for errors other than [EACCES] or [ENOENT].
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#
217206 |
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09-Jan-2011 |
jilles |
sh: Remove special %builtin PATH entry. All builtins are now always found before a PATH search.
Most ash derivatives have an undocumented feature where the presence of an entry "%builtin" in $PATH will cause builtins to be checked at that point of the PATH search, rather than before looking at any directories as documented in the man page (very old versions do document this feature).
I am removing this feature from sh, as it complicates the code, may violate expectations (for example, /usr/bin/alias is very close to a forkbomb with PATH=/usr/bin:%builtin, only /usr/bin/builtin not being another link saves it) and appears to be unused (all the %builtin google code search finds is in some sort of ash source code).
Note that aliases and functions took and take precedence above builtins. Because aliases work on a lexical level they can only ever be overridden on a lexical level (quoting or preceding 'builtin' or 'command'). Allowing override of functions via PATH does not really fit in the model of sh and it would work differently from %builtin if implemented.
Note: POSIX says special builtins are found before functions. We comply to this because we do not allow functions with the same name as a special builtin.
Silence from: freebsd-hackers@ (message sent 20101225) Discussed with: dougb
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#
216706 |
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26-Dec-2010 |
jilles |
sh: Allow arbitrary large numbers in CHECKSTRSPACE. Reduce "stack string" API somewhat and simplify code. Add a check for integer overflow of the "stack string" length (probably incomplete).
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#
213811 |
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13-Oct-2010 |
obrien |
In the spirit of r90111, depend on c89 and remove the "STATIC" macro and its usage.
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#
213760 |
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13-Oct-2010 |
obrien |
Consistently use "STATIC" for all functions in order to be able to set breakpoints with in a debugger. And use naked "static" for variables.
Noticed by: bde
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#
204800 |
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06-Mar-2010 |
jilles |
sh: Improve the command builtin: * avoid unnecessary fork * allow executing builtins via command * executing a special builtin via command removes its special properties
Obtained from: NetBSD (parts)
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#
201366 |
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01-Jan-2010 |
jilles |
sh: Fix some bugs with backquoted builtins: - correctly handle error output in $(builtin 2>&1), clarify out1/out2 vs output/errout in the code - treat all builtins as regular builtins so errors do not abort the shell and variable assignments do not persist - respect the caller's INTOFF
Some bugs still exist: - expansion errors may still abort the shell - some side effects of expansions and builtins persist
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#
201344 |
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31-Dec-2009 |
jilles |
sh: Use PATH= assignment in type.
Example: PATH=/var/empty; PATH=/bin type ls
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#
201343 |
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31-Dec-2009 |
jilles |
sh: Allow command -pv and command -pV (lookup using _PATH_STDPATH).
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#
201053 |
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27-Dec-2009 |
jilles |
sh: Various warning fixes (from WARNS=6 NO_WERROR=1): - const - initializations to silence -Wuninitialized (it was safe anyway) - remove nested extern declarations - rename "index" locals to "idx"
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#
200956 |
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24-Dec-2009 |
jilles |
sh: Constify various strings.
Most of this is adding const keywords, but setvar() in var.c had to be changed somewhat more.
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#
197820 |
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06-Oct-2009 |
jilles |
sh: Send the "xyz: not found" message to redirected fd 2. This also fixes that trying to execute a non-regular file with a command name without '/' returns 127 instead of 126. The fix is rather simplistic: treat CMDUNKNOWN as if the command were found as an external program. The resulting fork is a bit wasteful but executing unknown commands should not be very frequent.
PR: bin/137659
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#
196634 |
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28-Aug-2009 |
jilles |
sh: Fix crash with empty functions (f() { }) introduced in r196483
Empty pairs of braces are represented by a NULL node pointer, just like empty lines at the top level.
Support for empty pairs of braces may be removed later. They make the code more complex, have inconsistent behaviour (may or may not change $?), are not specified by POSIX and are not allowed by some other shells like bash, dash and ksh93.
Reported by: kan
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196483 |
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23-Aug-2009 |
jilles |
sh: Fix crash when undefining or redefining a currently executing function.
Add a reference count to function definitions. Memory may leak if multiple SIGINTs arrive in interactive mode, this will be fixed later by changing SIGINT handling.
PR: bin/137640
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194922 |
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24-Jun-2009 |
jilles |
Designate special builtins as such in command -V and type. Also document various properties of special builtins that we implement.
Approved by: ed (mentor) (implicit)
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#
193223 |
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01-Jun-2009 |
rse |
align coding style with style(9) to avoid misunderstandings
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#
185401 |
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28-Nov-2008 |
stefanf |
Report error messages of the builtins 'type' and 'command -V' to stderr instead of stdout.
Noticed by: Zajcev Evgeny
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#
166101 |
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18-Jan-2007 |
stefanf |
Use eaccess() instead of access() for the type builtin, like we do for the test builtin.
Submitted by: Martin Kammerhofer
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#
165930 |
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10-Jan-2007 |
stefanf |
Return an error status (127) from the builtins 'type' and 'command' (with 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
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#
157601 |
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09-Apr-2006 |
stefanf |
Implement some of the differences between special built-ins and other builtins 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.
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#
151854 |
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29-Oct-2005 |
stefanf |
Forced commit to note the patch for the previous commit was
Submitted by: rodrigc
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#
151810 |
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28-Oct-2005 |
stefanf |
Add the POSIX options -v and -V to the 'command' builtin. Both describe the type of their argument, if it is a shell function, an alias, a builtin, etc. -V is more verbose than -v.
PR: 77259, 84539
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#
149016 |
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13-Aug-2005 |
stefanf |
Use prototypes in the MKINIT lines collected by mkinit.
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#
135856 |
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27-Sep-2004 |
des |
Attempting to unset an undefined variable or function should not be considered an error according to the Open Group Base Specification.
PR: standards/45738 Submitted by: Matthias Andree <matthias.andree@web.de> MFC after: 3 days
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#
127958 |
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06-Apr-2004 |
markm |
Remove clause 3 from the UCB licenses.
OK'ed by: imp, core
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#
117261 |
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05-Jul-2003 |
dds |
Changes following CScout analysis:
- Removed dead declarations - Made objects that should have been declared as static, static.
The changes use STATIC instead of static, following the existing convention in the rest of the code.
Approved by: schweikh (mentor) MFC after: 2 weeks
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#
104283 |
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01-Oct-2002 |
tjr |
Restore "not found" error message when searching for (or executing) a program fails because the file or a path component does not exist.
Suggested by: bde
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104132 |
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29-Sep-2002 |
tjr |
Convert the remaining callers of errmsg() to use strerror(), and remove errmsg() and its table of error messages.
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#
100351 |
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19-Jul-2002 |
tjr |
Remove broken and incomplete support for old releases of System V, don't support system that implement getcwd(3) with a pipe to /bin/pwd.
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#
99110 |
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30-Jun-2002 |
obrien |
Consistently use FBSDID
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#
98157 |
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13-Jun-2002 |
tjr |
Don't list shell builtins when the hash command is used (SUSv3)
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#
94775 |
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15-Apr-2002 |
greid |
Stop a null pointer dereference in the builtin hash function.
PR: 36141 Approved by: cracauer MFC after: 1 week
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#
90111 |
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02-Feb-2002 |
imp |
o __P has been reoved o Old-style K&R declarations have been converted to new C89 style o register has been removed o prototype for main() has been removed (gcc3 makes it an error) o int main(int argc, char *argv[]) is the preferred main definition. o Attempt to not break style(9) conformance for declarations more than they already are. o Change int foo() { ... to int foo(void) { ...
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#
64704 |
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16-Aug-2000 |
cracauer |
Fix type builtin for absolute paths and relative paths with directory names in them.
Also use a colon in the answer of `type` everytime the questioned item is not usable.
PR: bin/20567
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54884 |
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20-Dec-1999 |
cracauer |
Fix command hash handling on PATH=... command
Noted by and fix works for Marcel Moolenaar <marcel@scc.nl>
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#
50471 |
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27-Aug-1999 |
peter |
$Id$ -> $FreeBSD$
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#
36150 |
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18-May-1998 |
charnier |
Add rcsid. Spelling.
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#
25905 |
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18-May-1997 |
steve |
Use the __unused attribute where warranted.
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#
25223 |
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28-Apr-1997 |
steve |
Add a type builtin and nuke register keyword usage.
Obtained from: NetBSD
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#
22988 |
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22-Feb-1997 |
peter |
Revert $FreeBSD$ to $Id$
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#
21673 |
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14-Jan-1997 |
jkh |
Make the long-awaited change from $Id$ to $FreeBSD$
This will make a number of things easier in the future, as well as (finally!) avoiding the Id-smashing problem which has plagued developers for so long.
Boy, I'm glad we're not using sup anymore. This update would have been insane otherwise.
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#
20425 |
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14-Dec-1996 |
steve |
Merge in NetBSD mods and -Wall cleaning.
Obtained from: NetBSD, me
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#
18018 |
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03-Sep-1996 |
peter |
Fix for PR#1287. This makes sh behave sensibly in case statements in the face of aliases. Note, bash doesn't do aliases while running scripts, but "real" ksh does..
Also: Reduce redundant .Nm macros in (unused) bltin/echo.1 nuke error2, it's hardly used. More -Wall cleanups dont do certain history operations if NO_HISTORY defined handle quad_t's from resource limits
Submitted by: Steve Price <sprice@hiwaay.net> (minor tweaks by me)
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#
17987 |
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01-Sep-1996 |
peter |
Merge of 4.4-Lite2 sh source, plus some gcc -Wall cleaning. This is a merge of parallel duplicate work by Steve Price and myself. :-]
There are some changes to the build that are my fault... mkinit.c was trying (poorly) to duplicate some of the work that make(1) is designed to do. The Makefile hackery is my fault too, the depend list was incomplete because of some explicit OBJS+= entries, so mkdep wasn't picking up their source file #includes.
This closes a pile of /bin/sh PR's, but not all of them..
Submitted by: Steve Price <steve@bonsai.hiwaay.net>, peter
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#
8855 |
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29-May-1995 |
rgrimes |
Remove trailing whitespace.
Reviewed by: phk
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#
3044 |
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24-Sep-1994 |
dg |
Added $Id$
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#
2111 |
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18-Aug-1994 |
dg |
Got rid of stupid warning message.
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#
1557 |
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26-May-1994 |
rgrimes |
This commit was generated by cvs2svn to compensate for changes in r1556, which included commits to RCS files with non-trunk default branches.
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#
1556 |
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26-May-1994 |
rgrimes |
BSD 4.4 Lite bin Sources
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