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declare builtin changes to reject -i when used with -n; readline changes to make control characters visible in search strings; readline signal handling changes to avoid data corruption and UAF; documentation updates for more consistent quoting

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This commit is contained in:
Chet Ramey
2025-09-04 12:29:57 -04:00
parent ab17ddb7af
commit a451bfc3f5
46 changed files with 36912 additions and 1499 deletions
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execute_cmd.c
+30
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@@ -1601,9 +1601,17 @@ execute_in_subshell (COMMAND *command, int asynchronous, int pipe_in, int pipe_o
USE_VAR(asynchronous);
subshell_level++;
/* should_redir_stdin reflects whether we are executing an asynchronous
command terminated by a `&'. */
should_redir_stdin = (asynchronous && (command->flags & CMD_STDIN_REDIR) &&
pipe_in == NO_PIPE &&
#if 0 /*TAG:bash-5.4 POSIX interp 1913 */
/* POSIX interp 1913 says that the redirection of fd 0
from /dev/null is unconditional. */
(posixly_correct || stdin_redirects (command->redirects) == 0));
#else
stdin_redirects (command->redirects) == 0);
#endif
invert = (command->flags & CMD_INVERT_RETURN) != 0;
user_subshell = command->type == cm_subshell || ((command->flags & CMD_WANT_SUBSHELL) != 0);
@@ -2848,10 +2856,20 @@ execute_connection (COMMAND *command, int asynchronous, int pipe_in, int pipe_ou
if we are currently in a subshell via `( xxx )', or if job
control is not active then the standard input for an
asynchronous command is forced to /dev/null. */
/* If we want to make this /dev/null redirection unconditional in posix
mode, change this to check posixly_correct */
#if defined (JOB_CONTROL)
#if 0 /*TAG:bash-5.4 POSIX interp 1913 */
if (((subshell_environment || !job_control) && !stdin_redir) || posixly_correct)
#else
if ((subshell_environment || !job_control) && !stdin_redir)
#endif
#else
#if 0 /*TAG:bash-5.4 POSIX interp 1913 */
if (!stdin_redir || posixly_correct)
#else
if (!stdin_redir)
#endif
#endif /* JOB_CONTROL */
tc->flags |= CMD_STDIN_REDIR;
@@ -4803,7 +4821,13 @@ run_builtin:
{
if ((cmdflags & CMD_STDIN_REDIR) &&
pipe_in == NO_PIPE &&
#if 0 /*TAG:bash-5.4 POSIX interp 1913 */
/* POSIX interp 1913 says that the redirection of fd 0
from /dev/null is unconditional. */
(posixly_correct || stdin_redirects (simple_command->redirects) == 0))
#else
(stdin_redirects (simple_command->redirects) == 0))
#endif
async_redirect_stdin ();
setup_async_signals ();
}
@@ -5817,7 +5841,13 @@ execute_disk_command (WORD_LIST *words, REDIRECT *redirects, char *command_line,
{
if ((cmdflags & CMD_STDIN_REDIR) &&
pipe_in == NO_PIPE &&
#if 0 /*TAG:bash-5.4 POSIX interp 1913 */
/* POSIX interp 1913 says that the redirection of fd 0
from /dev/null is unconditional. */
(posixly_correct || stdin_redirects (redirects) == 0))
#else
(stdin_redirects (redirects) == 0))
#endif
async_redirect_stdin ();
setup_async_signals ();
}