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* mkinit: Split reset into exitreset and resetHerbert Xu2018-05-28
| | | | | | | | | | | | | Previously reset was called after exitshell. This was changed so that it was called before exitshell because certain state needed to be reset in order for the EXIT trap to work. However, this caused issues because certain other states (such as local variables) should not be reset. This patch fixes this by creating a new function exitreset that is called prior to exitshell and moving reset back to its original location. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* redir: Fix typo in noclobber codeHerbert Xu2018-04-19
| | | | | | | | The noclobber code has a typo in it that causes it to fail. This patch fixes it. Reported-by: Denys Vlasenko <vda.linux@googlemail.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [REDIR] Replace GPL noclobberopen code with the FreeBSD versionJilles Tjoelker2011-03-10
| | | | | | | | | Replace noclobberopen() from bash with the FreeBSD code for noclobber opens. This also reduces code size by eliminating an unnecessary check. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [REDIR] Fix popredir on abnormal exit from built-inHerbert Xu2010-05-27
| | | | | | | | | Just like the poplocalvar problem recently fixed, redirections can also be leaked in case of an abnormal exit. This patch fixes it using the same method as poplocalvar, by storing the previous redirection state and restoring to that point. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [REDIR] Move null redirect checks into callerHerbert Xu2010-05-27
| | | | | | | | | The null redirect checks were added as an optimisation to avoid unnecessary memory allocations. However, we could avoid this completely by simply making the caller avoid making a redirection unless it is not null. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [REDIR] Do not truncate file for FROMTO redirectionHerbert Xu2010-03-09
| | | | | | | | | | | | | | | | On Tue, Jun 23, 2009 at 10:06:30AM +0000, Nikola Vladov wrote: > May be this is a bug: > > echo XX > uu > cat <> uu > > dash truncates file uu. The open flag O_TRUNC must be removed. > I'm not 100% shure what POSIX say about: program <> file Indeed, this is a bug we inherited from NetBSD. This patch removes the O_TRUNC flag for FROMTO. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [REDIR] Fix incorrect savefd conversionsHerbert Xu2009-06-27
| | | | | | | | | When I added savefd we may end up closing stderr if that is how we get to the tty. This patch fixes by adding a second argument to indicate what fd should be closed which lets jobs.c get around the problem. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [EXPAND] Expand here-documents in the current shell environmentHerbert Xu2007-11-11
| | | | | | | | | | | | | | | | | | | | | | | | | | Previously we always expanded here-documents in a subshell. This is contrary to the POSIX specification and how other shells behave. What's more this slows down many expansions due to the extra fork (however, it must be said that it is possible for it speed up certain expansions by running it simultaneously with the command on two CPUs). This patch move the expansion into the current shell environment. Test case: unset a cat <<- EOF > /dev/null ${a=NOT} EOF echo ${a}BAD Old result: BAD New result: NOTBAD
* [REDIR] Size optimisations in redir.cHerbert Xu2007-05-12
| | | | | | Add likely flag on REDIR_PUSH. Remove sv check on REDIR_SAVEFD2 (it implies REDIR_PUSH). Optimise NTOFD/NFROMFD same fd check.
* [REDIR] Fix redirect restore on saved file descriptorsHerbert Xu2007-05-12
| | | | | | | | | | | | | | As it stands if a redirection occurs on a file descriptor that was previously closed, it won't be closed after that redirection goes out of effect. This is because we don't keep track of closed file descriptors properly as we do for open ones. This patch fixes this by introducing two new states, CLOSED and REALLY_CLOSED. The first represents an initially closed descriptor which is now open while the second one represents an initally closed descriptor which is now closed. This patch is based on work by Rainer Weikusat.
* [REDIR] Remove redundant CLOEXEC callsHerbert Xu2007-05-12
| | | | | Now that we're marking file descriptors as CLOEXEC in savefd, we no longer need to close them on exec or in setinputfd.
* [REDIR] Replace copyfd by savefd and use dup2 elsewhereHerbert Xu2007-05-12
| | | | | | | There are two kinds of users to copyfd, those that want to copy an fd to an exact value and those that want to move an fd to a value >= 10. The former can simply use dup2 directly while the latter share a lot of common code that now constitutes savefd.
* [REDIR] Remove EMFILE special caseHerbert Xu2007-05-06
| | | | | No caller of copyfd need to ignore EMFILE so we can remove the special case and just let it call sh_error on any error.
* Copyright/licence updates and remove all traces of sys/cdefs.hHerbert Xu2005-10-29
| | | | | | | | | | | This change updates the BSD licence to the three-clause version since NetBSD has already done so. This makes dash GPL-compatible. It also adds Christos Zoulas (NetBSD ash maintainer) to the COPYING file. I've added "copyright by Herbert Xu" to most files. Finally all CVS IDs and inclusion of sys/cdefs.h have been removed. The latter is needed for support of klibc.
* Renamed error to sh_error.herbert2005-09-26
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* Initial import.Herbert Xu2005-09-26