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* redir: Clear saved redirections in subshellHerbert Xu2020-04-29
| | | | | | | | | | | | | | | | | | | | | When we enter a subshell we need to drop the saved redirections as otherwise a subsequent unwindredir could produce incorrect results. This patch does this by simply clearing redirlist. While we could actually free the memory underneath for subshells it isn't really worth the trouble for now. In order to ensure that this is done in every place where we enter a subshell, this patch adds a new mkinit hook called forkreset. The calls closescript, clear_traps and reset_handler are also added to the forkreset hook. This fixes a bug where the first two functions weren't called if we enter a subshell without forking. Reported-by: Harald van Dijk <harald@gigawatt.nl> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* 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>
* 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.
* Initial import.Herbert Xu2005-09-26