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* hush: fix a few more corner cases with empty-expanding `cmds`Denys Vlasenko2018-04-052-0/+30
| | | | | | | | | See added testcases function old new delta run_pipe 1723 1784 +61 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* hush: fix corner cases with exec in empty expansionsDenys Vlasenko2018-04-052-0/+5
| | | | | | | | | | | | | | | | Cases like these: var=val exec >redir var=val `` >redir function old new delta run_pipe 1701 1723 +22 redirect_and_varexp_helper 56 55 -1 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 1/1 up/down: 22/-1) Total: 21 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* ash,hush: fix "saved" redirected fds still visible in childrenDenys Vlasenko2018-03-286-0/+33
| | | | | | | | | | Based on a patch by Mark Marshall <mark.marshall@omicronenergy.com> function old new delta dup_CLOEXEC - 49 +49 fcntl_F_DUPFD 46 - -46 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* ash: significant overhaul of redirect saving logicDenys Vlasenko2017-07-315-2/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | New code is similar to what hush is doing. Make CLOSED to -1: same as dash. popredir() loses "restore" parameter: same as dash. COPYFD_RESTORE bit is no longer necessary. This change fixes this interactive bug: $ ls -l /proc/$$/fd 10>&- ash: can't set tty process group: Bad file descriptor ash: can't set tty process group: Bad file descriptor [1]+ Done(2) ls -l /proc/${\$}/fd 10>&4294967295 function old new delta unwindredir 29 27 -2 tryexec 154 152 -2 evaltree 503 501 -2 evalcommand 1369 1367 -2 cmdloop 187 185 -2 redirect 1029 1018 -11 popredir 153 123 -30 need_to_remember 36 - -36 is_hidden_fd 68 - -68 ------------------------------------------------------------------------------ (add/remove: 0/2 grow/shrink: 0/7 up/down: 0/-155) Total: -155 bytes text data bss dec hex filename 914572 485 6848 921905 e1131 busybox_old 914553 485 6848 921886 e111e busybox_unstripped Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* hush: fix a case when redirect to a closed fd #1 is not restoring (closing) itDenys Vlasenko2017-07-242-0/+8
| | | | | | | | | | | function old new delta setup_redirects 200 245 +45 append_squirrel - 41 +41 save_fds_on_redirect 256 221 -35 ------------------------------------------------------------------------------ (add/remove: 1/0 grow/shrink: 1/1 up/down: 86/-35) Total: 51 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* hush: fix two redirection testcase failuresDenys Vlasenko2017-07-072-4/+2
| | | | | | | | | | | | | | | | function old new delta save_fds_on_redirect 183 256 +73 fcntl_F_DUPFD - 46 +46 restore_redirects 74 96 +22 xdup_and_close 51 72 +21 setup_redirects 196 200 +4 hush_main 988 983 -5 static.C 12 - -12 run_pipe 1595 1551 -44 ------------------------------------------------------------------------------ (add/remove: 1/1 grow/shrink: 4/2 up/down: 166/-61) Total: 105 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* shell: sync redir/* testsDenys Vlasenko2017-07-062-0/+5
| | | | | | Note: hush-redir/redir_to_bad_fd.tests currently fails Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* hush: add a TODO about redir3.tests failureDenys Vlasenko2017-07-062-0/+8
| | | | Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* hush: rename hush-redir/redir3.tests (ash has redir3.tests which id different)Denys Vlasenko2017-07-062-0/+0
| | | | Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* ash: fix open fds leaking in redirects. Closes 9561Denys Vlasenko2017-01-072-0/+16
| | | | | | | | | | | | | | | commit e19923f6652a638ac39c84012e97f52cf5a7568e deleted clearredir() call in shellexec(): ash: [REDIR] Remove redundant CLOEXEC calls Upstream commit: Now that we're marking file descriptors as CLOEXEC in savefd, we no longer need to close them on exec or in setinputfd. but it missed one place where we don't set CLOEXEC. Fixing this. Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* sh testsuite: sync ash-redir/ and hush-redir/Denys Vlasenko2016-10-0212-114/+198
| | | | Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* sh testsuite: create hush-redir/* and move files aroundDenys Vlasenko2016-10-0224-0/+298
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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