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nsh: Add pipeline support for nsh commandline

Browse Source 
And nested pipeline supported.

Test
  1. Redirect in
    cat < /etc/init.d/rc.sysinit

  2. Simple pipeline
    ls | cat

  3. Nested pipeline
    ls | dd | cat | dd | cat

Signed-off-by: wangjianyu3 <wangjianyu3@xiaomi.com>
This commit is contained in:
wangjianyu3
2024-10-14 20:44:27 +08:00
committed by Xiang Xiao
parent 3da204c23e
commit c052bd8377
4 changed files with 186 additions and 1 deletions
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28
nshlib/nsh_fileapps.c
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@@ -126,6 +126,20 @@ int nsh_fileapp(FAR struct nsh_vtbl_s *vtbl, FAR const char *cmd,
goto errout_with_actions;
}
}
#ifdef CONFIG_NSH_PIPELINE
else if (param->fd_in != -1)
{
ret = posix_spawn_file_actions_adddup2(&file_actions,
param->fd_in, 0);
if (ret != 0)
{
nsh_error(vtbl, g_fmtcmdfailed, cmd,
"posix_spawn_file_actions_adddup2",
NSH_ERRNO);
goto errout_with_actions;
}
}
#endif
/* Handle re-direction of output */
@@ -147,6 +161,20 @@ int nsh_fileapp(FAR struct nsh_vtbl_s *vtbl, FAR const char *cmd,
goto errout_with_attrs;
}
}
#ifdef CONFIG_NSH_PIPELINE
else if (param->fd_out != -1)
{
ret = posix_spawn_file_actions_adddup2(&file_actions,
param->fd_out, 1);
if (ret != 0)
{
nsh_error(vtbl, g_fmtcmdfailed, cmd,
"posix_spawn_file_actions_adddup2",
NSH_ERRNO);
goto errout_with_actions;
}
}
#endif
}
#ifdef CONFIG_BUILTIN