busybox-w32/shell/ash_test/ash-redir, branch cron_changes

shells: testcase: add another test for EINTR on fifo open

2025-08-11T12:10:17+00:00

Signed-off-by: Denys Vlasenko

ash: redir: Retry open on EINTR

2025-08-09T18:17:31+00:00

Upstream commit: Date: Thu, 28 May 2020 21:31:45 +1000 redir: Retry open64 on EINTR It is possible for open64 to block on named pipes, and therefore it can be interrupted by signals and return EINTR. We should only let it fail with EINTR if real signals are pending (i.e., it should not fail on SIGCHLD if SIGCHLD has not been trapped). This patch adds a new helper sh_open to retry the open64 call if necessary. It also calls sh_error when appropriate. Fixes: 3800d4934391 ("[JOBS] Fix dowait signal race") Signed-off-by: Denys Vlasenko

hush: do not exit interactive shell on some redirection errors

2024-07-13T00:13:28+00:00

$ echo >&99 hush: dup2(99,1): Bad file descriptor $ echo >&9999 hush: fcntl(1,F_DUPFD,10000): Invalid argument $ echo 2>/dev/tty 10>&9999 hush: fcntl(10,F_DUPFD,10000): Invalid argument $ still alive!_ function old new delta static.setup_redirects 334 394 +60 .rodata 105661 105712 +51 dup_CLOEXEC 49 79 +30 save_fd_on_redirect 263 277 +14 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 4/0 up/down: 155/0) Total: 155 bytes Signed-off-by: Denys Vlasenko

hush: fix "exec 3>FILE" aborting if 3 is exactly the next free fd

2024-07-12T22:59:02+00:00

Signed-off-by: Denys Vlasenko

ash: eval: Fail immediately with redirections errors for simple command

2020-02-20T08:36:51+00:00

Upstream commit: Date: Sat, 19 May 2018 02:39:54 +0800 eval: Fail immediately with redirections errors for simple command Previously, dash would continue to perform variable expansions even if a redirection error occured. This patch changes it so that it fails immediately. Signed-off-by: Herbert Xu Signed-off-by: Denys Vlasenko

hush: restore redirected stdin

2019-11-01T13:16:07+00:00

function old new delta restore_redirects 52 95 +43 save_fd_on_redirect 243 253 +10 hfopen 90 99 +9 fgetc_interactive 259 261 +2 builtin_type 117 115 -2 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 4/1 up/down: 64/-2) Total: 62 bytes Signed-off-by: Denys Vlasenko

hush: fix nested redirects colliding with script fds

2018-07-24T14:54:41+00:00

This necessitates switch from libc FILE api to a simple homegrown replacement. The change which fixes the bug here is the deleting of restore_redirected_FILEs(); line. It was prematurely moving (restoring) script fd#3. The fix is: we don't even _want_ to restore scrit fds, we are perfectly fine with them being moved. The only reason we tried to restore them is that FILE api did not allow moving of FILE->fd. function old new delta refill_HFILE_and_getc - 93 +93 hfopen - 90 +90 hfclose - 66 +66 pseudo_exec_argv 591 597 +6 hush_main 1089 1095 +6 builtin_source 209 214 +5 save_fd_on_redirect 197 200 +3 setup_redirects 320 321 +1 fgetc_interactive 235 236 +1 i_peek_and_eat_bkslash_nl 99 97 -2 expand_vars_to_list 1103 1100 -3 restore_redirects 99 52 -47 fclose_and_forget 57 - -57 remember_FILE 63 - -63 ------------------------------------------------------------------------------ (add/remove: 3/2 grow/shrink: 6/3 up/down: 271/-172) Total: 99 bytes Signed-off-by: Denys Vlasenko

hush: do not drop backslash from eval 'echo ok\'

2018-04-10T23:15:33+00:00

newer bash does not drop it, most other shells too function old new delta unbackslash 39 57 +18 parse_stream 2753 2751 -2 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 1/1 up/down: 18/-2) Total: 16 bytes Signed-off-by: Denys Vlasenko

hush: fix corner cases with exec in empty expansions

2018-04-05T12:41:21+00:00

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

ash,hush: fix "saved" redirected fds still visible in children

2018-03-28T16:35:07+00:00

Based on a patch by Mark Marshall function old new delta dup_CLOEXEC - 49 +49 fcntl_F_DUPFD 46 - -46 Signed-off-by: Denys Vlasenko