mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-28 15:41:40 +00:00
cli: modern_hush: Add upstream commits up to 2nd October 2023.
This commit adds the following hush busybox upstream commits:
791b222dd55d ("sleep: fix "sleep -- ARGS"")
5353df91cba7 ("Update applet size estimates")
e41e481fd571 ("hush: fix a compile failure")
07a95cfcabb0 ("ash: disable check for "good" function name, bash does not check this")
e5692e2342c6 ("hush: quote values in "readonly" output")
96769486e20f ("shell: move varcmp() to shell_common.h and use it in hush")
bab8828b0dad ("hush: fix expansion of space in "a=${a:+$a }c" construct")
b5be8da350b5 ("hush: make "false" built-in")
6824298ab4d3 ("hush: fix ELIF cmd1;cmd2 THEN ... not executing cmd2, closes 15571")
3a7f00eadcf4 ("hush: add comment about abort on syntax error %{^}")
acae889dd972 ("ash,hush: tab completion of functions and aliases")
90b607d79a13 ("hush: quote variable values printed by "set" (match ash behavior)")
6748e6494c22 ("hush (NOMMU): fix LINENO in execed children")
fd5fb2d2b596 ("hush: speed up "big heredoc" code")
1409432d072e ("hush: add TODO comment")
93ae7464e6e4 ("hush: restore SIGHUP handling, this time explain why we do what we do")
1fdb33bd07e5 ("hush: restore tty pgrp on SIGHUP")
6101b6d3eaa0 ("hush: remove special handling of SIGHUP")
93e0898c663a ("shell: fix SIGWINCH and SIGCHLD (in hush) interrupting line input, closes 15256")
969e00816835 ("hush: code shrink")
27be0e8cfeb6 ("shell: fix compile failures in some configs")
7d1c7d833785 ("ash,hush: use HOME for tab completion and prompts")
21afddefd258 ("hush: fix "error: invalid preprocessing directive ##"")
e53c7dbafc78 ("hush: fix set -n to act immediately, not just after run_list()")
574b9c446da1 ("hush: fix var_LINENO3.tests failure")
49bcf9f40cff ("hush: speed up ${x//\*/|} too")
53b2fdcdba4c ("*: add NOINLINEs where code noticeably shrinks")
7c3e96d4b3d4 ("shell: use more compact SHELL_ASH / HUSH config defines. no code changes")
62f1eed1e191 ("hush: in a comment, document what -i might be doing")
aaf3d5ba74c5 ("shell: tweak --help")
db5546ca1018 ("libbb: code shrink: introduce and use [_]exit_SUCCESS()")
931c55f9e2b4 ("libbb: invert the meaning of SETUP_ENV_NO_CHDIR -> SETUP_ENV_CHDIR")
12566e7f9b5e ("ash,hush: fix handling of SIGINT while waiting for interactive input")
987be932ed3c ("*: slap on a few ALIGN_PTR where appropriate")
Signed-off-by: Francis Laniel <francis.laniel@amarulasolutions.com>
This commit is contained in:
Francis Laniel
Tom Rini
parent
2223c49c75
commit
c24cb3ebff
2 changed files with 304 additions and 123 deletions
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@ -26,7 +26,7 @@
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/*
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* BusyBox Version: UPDATE THIS WHEN PULLING NEW UPSTREAM REVISION!
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*/
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#define BB_VER "1.34.0.git37460f5daff9"
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#define BB_VER "1.35.0.git7d1c7d833785"
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/*
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* Define hush features by the names used upstream.
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@ -236,6 +236,24 @@ static size_t list_size(char **list)
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return size;
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}
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static int varcmp(const char *p, const char *q)
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{
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int c, d;
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while ((c = *p) == (d = *q)) {
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if (c == '\0' || c == '=')
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goto out;
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p++;
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q++;
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}
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if (c == '=')
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c = '\0';
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if (d == '=')
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d = '\0';
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out:
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return c - d;
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}
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struct in_str;
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static int u_boot_cli_readline(struct in_str *i);
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@ -91,7 +91,7 @@
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* in word = GLOB, quoting should be significant on char-by-char basis: a*cd"*"
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*/
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//config:config HUSH
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//config: bool "hush (68 kb)"
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//config: bool "hush (70 kb)"
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//config: default y
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//config: select SHELL_HUSH
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//config: help
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@ -339,7 +339,7 @@
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* therefore we don't show them either.
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*/
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//usage:#define hush_trivial_usage
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//usage: "[-enxl] [-c 'SCRIPT' [ARG0 ARGS] | FILE [ARGS] | -s [ARGS]]"
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//usage: "[-enxl] [-c 'SCRIPT' [ARG0 ARGS] | FILE ARGS | -s ARGS]"
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//usage:#define hush_full_usage "\n\n"
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//usage: "Unix shell interpreter"
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@ -374,7 +374,7 @@
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# define F_DUPFD_CLOEXEC F_DUPFD
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#endif
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#if ENABLE_FEATURE_SH_EMBEDDED_SCRIPTS && !(ENABLE_ASH || ENABLE_SH_IS_ASH || ENABLE_BASH_IS_ASH)
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#if ENABLE_FEATURE_SH_EMBEDDED_SCRIPTS && !ENABLE_SHELL_ASH
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# include "embedded_scripts.h"
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#else
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# define NUM_SCRIPTS 0
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@ -573,7 +573,7 @@ enum {
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#define NULL_O_STRING { NULL }
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#ifndef debug_printf_parse
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static const char *const assignment_flag[] = {
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static const char *const assignment_flag[] ALIGN_PTR = {
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"MAYBE_ASSIGNMENT",
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"DEFINITELY_ASSIGNMENT",
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"NOT_ASSIGNMENT",
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@ -957,6 +957,7 @@ struct globals {
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#if ENABLE_HUSH_INTERACTIVE
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smallint promptmode; /* 0: PS1, 1: PS2 */
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#endif
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/* set by signal handler if SIGINT is received _and_ its trap is not set */
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smallint flag_SIGINT;
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#ifndef __U_BOOT__
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#if ENABLE_HUSH_LOOPS
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@ -1133,6 +1134,7 @@ static int builtin_export(char **argv) FAST_FUNC;
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#if ENABLE_HUSH_READONLY
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static int builtin_readonly(char **argv) FAST_FUNC;
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#endif
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static int builtin_false(char **argv) FAST_FUNC;
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#if ENABLE_HUSH_JOB
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static int builtin_fg_bg(char **argv) FAST_FUNC;
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static int builtin_jobs(char **argv) FAST_FUNC;
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@ -1233,6 +1235,7 @@ static const struct built_in_command bltins1[] ALIGN_PTR = {
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#if ENABLE_HUSH_EXPORT
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BLTIN("export" , builtin_export , "Set environment variables"),
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#endif
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BLTIN("false" , builtin_false , NULL),
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#if ENABLE_HUSH_JOB
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BLTIN("fg" , builtin_fg_bg , "Bring job to foreground"),
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#endif
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@ -1506,6 +1509,7 @@ static void syntax_error_unterm_str(unsigned lineno UNUSED_PARAM, const char *s)
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{
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bb_error_msg("syntax error: unterminated %s", s);
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//? source4.tests fails: in bash, echo ${^} in script does not terminate the script
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// (but bash --posix, or if bash is run as "sh", does terminate in script, so maybe uncomment this?)
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// die_if_script();
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}
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@ -1917,7 +1921,13 @@ static void restore_G_args(save_arg_t *sv, char **argv)
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* SIGQUIT: ignore
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* SIGTERM (interactive): ignore
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* SIGHUP (interactive):
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* send SIGCONT to stopped jobs, send SIGHUP to all jobs and exit
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* Send SIGCONT to stopped jobs, send SIGHUP to all jobs and exit.
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* Kernel would do this for us ("orphaned process group" handling
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* according to POSIX) if we are a session leader and thus our death
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* frees the controlling tty, but to be bash-compatible, we also do it
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* for every interactive shell's death by SIGHUP.
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* (Also, we need to restore tty pgrp, otherwise e.g. Midnight Commander
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* backgrounds when hush started from it gets killed by SIGHUP).
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* SIGTTIN, SIGTTOU, SIGTSTP (if job control is on): ignore
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* Note that ^Z is handled not by trapping SIGTSTP, but by seeing
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* that all pipe members are stopped. Try this in bash:
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@ -2033,6 +2043,14 @@ enum {
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static void record_pending_signo(int sig)
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{
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sigaddset(&G.pending_set, sig);
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#if ENABLE_FEATURE_EDITING
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if (sig != SIGCHLD
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|| (G_traps && G_traps[SIGCHLD] && G_traps[SIGCHLD][0])
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/* ^^^ if SIGCHLD, interrupt line reading only if it has a trap */
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) {
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bb_got_signal = sig; /* for read_line_input: "we got a signal" */
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}
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#endif
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#if ENABLE_HUSH_FAST
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if (sig == SIGCHLD) {
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G.count_SIGCHLD++;
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@ -2264,9 +2282,14 @@ static int check_and_run_traps(void)
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break;
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#if ENABLE_HUSH_JOB
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case SIGHUP: {
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//TODO: why are we doing this? ash and dash don't do this,
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//they have no handler for SIGHUP at all,
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//they rely on kernel to send SIGHUP+SIGCONT to orphaned process groups
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/* if (G_interactive_fd) - no need to check, the handler
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* is only installed if we *are* interactive */
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{
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/* bash compat: "Before exiting, an interactive
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* shell resends the SIGHUP to all jobs, running
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* or stopped. Stopped jobs are sent SIGCONT
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* to ensure that they receive the SIGHUP."
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*/
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struct pipe *job;
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debug_printf_exec("%s: sig:%d default SIGHUP handler\n", __func__, sig);
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/* bash is observed to signal whole process groups,
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@ -2278,6 +2301,8 @@ static int check_and_run_traps(void)
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if (kill(- job->pgrp, SIGHUP) == 0)
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kill(- job->pgrp, SIGCONT);
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}
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}
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/* this restores tty pgrp, then kills us with SIGHUP */
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sigexit(SIGHUP);
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}
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#endif
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@ -2326,14 +2351,14 @@ static const char *get_cwd(int force)
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/*
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* Shell and environment variable support
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*/
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static struct variable **get_ptr_to_local_var(const char *name, unsigned len)
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static struct variable **get_ptr_to_local_var(const char *name)
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{
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struct variable **pp;
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struct variable *cur;
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pp = &G.top_var;
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while ((cur = *pp) != NULL) {
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if (strncmp(cur->varstr, name, len) == 0 && cur->varstr[len] == '=')
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if (varcmp(cur->varstr, name) == 0)
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return pp;
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pp = &cur->next;
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}
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@ -2343,21 +2368,20 @@ static struct variable **get_ptr_to_local_var(const char *name, unsigned len)
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static const char* FAST_FUNC get_local_var_value(const char *name)
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{
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struct variable **vpp;
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unsigned len = strlen(name);
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if (G.expanded_assignments) {
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char **cpp = G.expanded_assignments;
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while (*cpp) {
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char *cp = *cpp;
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if (strncmp(cp, name, len) == 0 && cp[len] == '=')
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return cp + len + 1;
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if (varcmp(cp, name) == 0)
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return strchr(cp, '=') + 1;
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cpp++;
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}
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}
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vpp = get_ptr_to_local_var(name, len);
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vpp = get_ptr_to_local_var(name);
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if (vpp)
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return (*vpp)->varstr + len + 1;
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return strchr((*vpp)->varstr, '=') + 1;
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#ifndef __U_BOOT__
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if (strcmp(name, "PPID") == 0)
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@ -2393,14 +2417,12 @@ static const char* FAST_FUNC get_local_var_value(const char *name)
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#ifndef __U_BOOT__
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#if ENABLE_HUSH_GETOPTS
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static void handle_changed_special_names(const char *name, unsigned name_len)
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static void handle_changed_special_names(const char *name)
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{
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if (name_len == 6) {
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if (strncmp(name, "OPTIND", 6) == 0) {
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if (varcmp(name, "OPTIND") == 0) {
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G.getopt_count = 0;
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return;
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}
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}
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}
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#else
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/* Do not even bother evaluating arguments */
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@ -2574,16 +2596,21 @@ int set_local_var_modern(char *str, int flags)
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#endif /* !__U_BOOT__ */
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free(free_me);
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handle_changed_special_names(cur->varstr, name_len - 1);
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handle_changed_special_names(cur->varstr);
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return retval;
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}
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#ifndef __U_BOOT__
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static int set_local_var0(char *str)
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{
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return set_local_var(str, 0);
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}
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static void FAST_FUNC set_local_var_from_halves(const char *name, const char *val)
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{
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char *var = xasprintf("%s=%s", name, val);
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set_local_var(var, /*flag:*/ 0);
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set_local_var0(var);
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}
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/* Used at startup and after each cd */
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@ -2594,16 +2621,14 @@ static void set_pwd_var(unsigned flag)
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#endif /* !__U_BOOT__ */
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#if ENABLE_HUSH_UNSET || ENABLE_HUSH_GETOPTS
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static int unset_local_var_len(const char *name, int name_len)
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static int unset_local_var(const char *name)
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{
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struct variable *cur;
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struct variable **cur_pp;
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cur_pp = &G.top_var;
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while ((cur = *cur_pp) != NULL) {
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if (strncmp(cur->varstr, name, name_len) == 0
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&& cur->varstr[name_len] == '='
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) {
|
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if (varcmp(cur->varstr, name) == 0) {
|
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if (cur->flg_read_only) {
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bb_error_msg("%s: readonly variable", name);
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return EXIT_FAILURE;
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|
|
@ -2622,15 +2647,10 @@ static int unset_local_var_len(const char *name, int name_len)
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}
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|
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/* Handle "unset LINENO" et al even if did not find the variable to unset */
|
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handle_changed_special_names(name, name_len);
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handle_changed_special_names(name);
|
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|
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return EXIT_SUCCESS;
|
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}
|
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|
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static int unset_local_var(const char *name)
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{
|
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return unset_local_var_len(name, strlen(name));
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}
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#endif
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|
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|
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|
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@ -2677,7 +2697,7 @@ static void set_vars_and_save_old(char **strings)
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eq = strchr(*s, '=');
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if (HUSH_DEBUG && !eq)
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bb_simple_error_msg_and_die("BUG in varexp4");
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var_pp = get_ptr_to_local_var(*s, eq - *s);
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var_pp = get_ptr_to_local_var(*s);
|
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if (var_pp) {
|
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var_p = *var_pp;
|
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if (var_p->flg_read_only) {
|
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|
|
@ -2787,31 +2807,55 @@ static void get_user_input(struct in_str *i)
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for (;;) {
|
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reinit_unicode_for_hush();
|
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G.flag_SIGINT = 0;
|
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/* buglet: SIGINT will not make new prompt to appear _at once_,
|
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* only after <Enter>. (^C works immediately) */
|
||||
|
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bb_got_signal = 0;
|
||||
if (!sigisemptyset(&G.pending_set)) {
|
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/* Whoops, already got a signal, do not call read_line_input */
|
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bb_got_signal = r = -1;
|
||||
} else {
|
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/* For shell, LI_INTERRUPTIBLE is set:
|
||||
* read_line_input will abort on either
|
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* getting EINTR in poll() and bb_got_signal became != 0,
|
||||
* or if it sees bb_got_signal != 0
|
||||
* (IOW: if signal arrives before poll() is reached).
|
||||
* Interactive testcases:
|
||||
* (while kill -INT $$; do sleep 1; done) &
|
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* #^^^ prints ^C, prints prompt, repeats
|
||||
* trap 'echo I' int; (while kill -INT $$; do sleep 1; done) &
|
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* #^^^ prints ^C, prints "I", prints prompt, repeats
|
||||
* trap 'echo T' term; (while kill $$; do sleep 1; done) &
|
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* #^^^ prints "T", prints prompt, repeats
|
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* #(bash 5.0.17 exits after first "T", looks like a bug)
|
||||
*/
|
||||
r = read_line_input(G.line_input_state, prompt_str,
|
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G.user_input_buf, CONFIG_FEATURE_EDITING_MAX_LEN-1
|
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);
|
||||
/* read_line_input intercepts ^C, "convert" it to SIGINT */
|
||||
if (r == 0) {
|
||||
if (r == 0)
|
||||
raise(SIGINT);
|
||||
}
|
||||
check_and_run_traps();
|
||||
if (r != 0 && !G.flag_SIGINT)
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||||
break;
|
||||
/* ^C or SIGINT: repeat */
|
||||
/* bash prints ^C even on real SIGINT (non-kbd generated) */
|
||||
/* bash prints ^C (before running a trap, if any)
|
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* both on keyboard ^C and on real SIGINT (non-kbd generated).
|
||||
*/
|
||||
if (sigismember(&G.pending_set, SIGINT)) {
|
||||
write(STDOUT_FILENO, "^C\n", 3);
|
||||
G.last_exitcode = 128 | SIGINT;
|
||||
}
|
||||
if (r < 0) {
|
||||
/* EOF/error detected */
|
||||
check_and_run_traps();
|
||||
if (r == 0) /* keyboard ^C? */
|
||||
continue; /* go back, read another input line */
|
||||
if (r > 0) /* normal input? (no ^C, no ^D, no signals) */
|
||||
break;
|
||||
if (!bb_got_signal) {
|
||||
/* r < 0: ^D/EOF/error detected (but not signal) */
|
||||
/* ^D on interactive input goes to next line before exiting: */
|
||||
write(STDOUT_FILENO, "\n", 1);
|
||||
i->p = NULL;
|
||||
i->peek_buf[0] = r = EOF;
|
||||
return r;
|
||||
}
|
||||
/* it was a signal: go back, read another input line */
|
||||
}
|
||||
i->p = G.user_input_buf;
|
||||
return (unsigned char)*i->p++;
|
||||
# else
|
||||
|
|
@ -2990,6 +3034,12 @@ static int i_getch(struct in_str *i)
|
|||
if (ch != '\0') {
|
||||
i->p++;
|
||||
i->last_char = ch;
|
||||
#if ENABLE_HUSH_LINENO_VAR
|
||||
if (ch == '\n') {
|
||||
G.parse_lineno++;
|
||||
debug_printf_parse("G.parse_lineno++ = %u\n", G.parse_lineno);
|
||||
}
|
||||
#endif
|
||||
return ch;
|
||||
}
|
||||
return EOF;
|
||||
|
|
@ -3953,7 +4003,7 @@ static void free_pipe_list(struct pipe *pi)
|
|||
#ifndef debug_print_tree
|
||||
static void debug_print_tree(struct pipe *pi, int lvl)
|
||||
{
|
||||
static const char *const PIPE[] = {
|
||||
static const char *const PIPE[] ALIGN_PTR = {
|
||||
[PIPE_SEQ] = "SEQ",
|
||||
[PIPE_AND] = "AND",
|
||||
[PIPE_OR ] = "OR" ,
|
||||
|
|
@ -3988,7 +4038,7 @@ static void debug_print_tree(struct pipe *pi, int lvl)
|
|||
[RES_XXXX ] = "XXXX" ,
|
||||
[RES_SNTX ] = "SNTX" ,
|
||||
};
|
||||
static const char *const CMDTYPE[] = {
|
||||
static const char *const CMDTYPE[] ALIGN_PTR = {
|
||||
"{}",
|
||||
"()",
|
||||
"[noglob]",
|
||||
|
|
@ -4575,7 +4625,7 @@ static int done_word(struct parse_context *ctx)
|
|||
|| endofname(command->argv[0])[0] != '\0'
|
||||
) {
|
||||
/* bash says just "not a valid identifier" */
|
||||
syntax_error("bad variable name in for");
|
||||
syntax_error("bad for loop variable");
|
||||
return 1;
|
||||
}
|
||||
/* Force FOR to have just one word (variable name) */
|
||||
|
|
@ -4966,6 +5016,11 @@ static int parse_group(struct parse_context *ctx,
|
|||
syntax_error_unexpected_ch(ch);
|
||||
return -1;
|
||||
}
|
||||
//bash allows functions named "123", "..", "return"!
|
||||
// if (endofname(command->argv[0])[0] != '\0') {
|
||||
// syntax_error("bad function name");
|
||||
// return -1;
|
||||
// }
|
||||
nommu_addchr(&ctx->as_string, ch);
|
||||
command->cmd_type = CMD_FUNCDEF;
|
||||
goto skip;
|
||||
|
|
@ -5353,7 +5408,7 @@ static int parse_dollar_squote(o_string *as_string, o_string *dest, struct in_st
|
|||
# undef as_string
|
||||
}
|
||||
#else
|
||||
# #define parse_dollar_squote(as_string, dest, input) 0
|
||||
# define parse_dollar_squote(as_string, dest, input) 0
|
||||
#endif /* BASH_DOLLAR_SQUOTE */
|
||||
#endif /* !__U_BOOT__ */
|
||||
|
||||
|
|
@ -6720,7 +6775,7 @@ static char *encode_then_expand_vararg(const char *str, int handle_squotes, int
|
|||
|
||||
/* Expanding ARG in ${var+ARG}, ${var-ARG}
|
||||
*/
|
||||
static int encode_then_append_var_plusminus(o_string *output, int n,
|
||||
static NOINLINE int encode_then_append_var_plusminus(o_string *output, int n,
|
||||
char *str, int dquoted)
|
||||
{
|
||||
struct in_str input;
|
||||
|
|
@ -6753,7 +6808,7 @@ static int encode_then_append_var_plusminus(o_string *output, int n,
|
|||
if (!dest.o_expflags) {
|
||||
if (ch == EOF)
|
||||
break;
|
||||
if (!dquoted && strchr(G.ifs, ch)) {
|
||||
if (!dquoted && !(output->o_expflags & EXP_FLAG_SINGLEWORD) && strchr(G.ifs, ch)) {
|
||||
/* PREFIX${x:d${e}f ...} and we met space: expand "d${e}f" and start new word.
|
||||
* do not assume we are at the start of the word (PREFIX above).
|
||||
*/
|
||||
|
|
@ -6885,16 +6940,21 @@ static arith_t expand_and_evaluate_arith(const char *arg, const char **errmsg_p)
|
|||
/* ${var/[/]pattern[/repl]} helpers */
|
||||
static char *strstr_pattern(char *val, const char *pattern, int *size)
|
||||
{
|
||||
int sz = strcspn(pattern, "*?[\\");
|
||||
if (pattern[sz] == '\0') {
|
||||
int first_escaped = (pattern[0] == '\\' && pattern[1]);
|
||||
/* "first_escaped" trick allows to treat e.g. "\*no_glob_chars"
|
||||
* as literal too (as it is semi-common, and easy to accomodate
|
||||
* by just using str + 1).
|
||||
*/
|
||||
int sz = strcspn(pattern + first_escaped * 2, "*?[\\");
|
||||
if ((pattern + first_escaped * 2)[sz] == '\0') {
|
||||
/* Optimization for trivial patterns.
|
||||
* Testcase for very slow replace (performs about 22k replaces):
|
||||
* x=::::::::::::::::::::::
|
||||
* x=$x$x;x=$x$x;x=$x$x;x=$x$x;x=$x$x;x=$x$x;x=$x$x;x=$x$x;x=$x$x;x=$x$x;echo ${#x}
|
||||
* echo "${x//:/|}"
|
||||
*/
|
||||
*size = sz;
|
||||
return strstr(val, pattern);
|
||||
*size = sz + first_escaped;
|
||||
return strstr(val, pattern + first_escaped);
|
||||
}
|
||||
|
||||
while (1) {
|
||||
|
|
@ -7370,7 +7430,7 @@ static NOINLINE int expand_one_var(o_string *output, int n,
|
|||
val = NULL;
|
||||
} else {
|
||||
char *new_var = xasprintf("%s=%s", var, val);
|
||||
set_local_var(new_var, /*flag:*/ 0);
|
||||
set_local_var0(new_var);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
@ -7858,6 +7918,9 @@ static void re_execute_shell(char ***to_free, const char *s,
|
|||
if (!cur->flg_export || cur->flg_read_only)
|
||||
cnt += 2;
|
||||
}
|
||||
# if ENABLE_HUSH_LINENO_VAR
|
||||
cnt += 2;
|
||||
# endif
|
||||
# if ENABLE_HUSH_FUNCTIONS
|
||||
for (funcp = G.top_func; funcp; funcp = funcp->next)
|
||||
cnt += 3;
|
||||
|
|
@ -7879,6 +7942,10 @@ static void re_execute_shell(char ***to_free, const char *s,
|
|||
*pp++ = cur->varstr;
|
||||
}
|
||||
}
|
||||
# if ENABLE_HUSH_LINENO_VAR
|
||||
*pp++ = (char *) "-L";
|
||||
*pp++ = utoa(G.execute_lineno);
|
||||
# endif
|
||||
# if ENABLE_HUSH_FUNCTIONS
|
||||
for (funcp = G.top_func; funcp; funcp = funcp->next) {
|
||||
*pp++ = (char *) "-F";
|
||||
|
|
@ -8025,7 +8092,11 @@ static int parse_and_run_string(const char *s)
|
|||
#endif /* __U_BOOT__ */
|
||||
{
|
||||
struct in_str input;
|
||||
#ifndef __U_BOOT__
|
||||
IF_HUSH_LINENO_VAR(unsigned sv = G.parse_lineno;)
|
||||
#else /* __U_BOOT__ */
|
||||
//IF_HUSH_LINENO_VAR(unsigned sv = G.parse_lineno;)
|
||||
#endif /* __U_BOOT__ */
|
||||
|
||||
setup_string_in_str(&input, s);
|
||||
#ifndef __U_BOOT__
|
||||
|
|
@ -8033,7 +8104,11 @@ static int parse_and_run_string(const char *s)
|
|||
#else /* __U_BOOT__ */
|
||||
return parse_and_run_stream(&input, '\0');
|
||||
#endif /* __U_BOOT__ */
|
||||
//IF_HUSH_LINENO_VAR(G.parse_lineno = sv;)
|
||||
#ifndef __U_BOOT__
|
||||
IF_HUSH_LINENO_VAR(unsigned sv = G.parse_lineno;)
|
||||
#else /* __U_BOOT__ */
|
||||
//IF_HUSH_LINENO_VAR(unsigned sv = G.parse_lineno;)
|
||||
#endif /* __U_BOOT__ */
|
||||
}
|
||||
|
||||
#ifdef __U_BOOT__
|
||||
|
|
@ -8141,7 +8216,7 @@ static int generate_stream_from_string(const char *s, pid_t *pid_p)
|
|||
if (is_prefixed_with(s, "trap")
|
||||
&& skip_whitespace(s + 4)[0] == '\0'
|
||||
) {
|
||||
static const char *const argv[] = { NULL, NULL };
|
||||
static const char *const argv[] ALIGN_PTR = { NULL, NULL };
|
||||
builtin_trap((char**)argv);
|
||||
fflush_all(); /* important */
|
||||
_exit(0);
|
||||
|
|
@ -8670,8 +8745,8 @@ static const struct built_in_command *find_builtin(const char *name)
|
|||
return find_builtin_helper(name, bltins2, &bltins2[ARRAY_SIZE(bltins2)]);
|
||||
}
|
||||
|
||||
#if ENABLE_HUSH_JOB && EDITING_HAS_get_exe_name
|
||||
static const char * FAST_FUNC get_builtin_name(int i)
|
||||
#if ENABLE_HUSH_JOB && ENABLE_FEATURE_TAB_COMPLETION
|
||||
static const char * FAST_FUNC hush_command_name(int i)
|
||||
{
|
||||
if (/*i >= 0 && */ i < ARRAY_SIZE(bltins1)) {
|
||||
return bltins1[i].b_cmd;
|
||||
|
|
@ -8680,6 +8755,16 @@ static const char * FAST_FUNC get_builtin_name(int i)
|
|||
if (i < ARRAY_SIZE(bltins2)) {
|
||||
return bltins2[i].b_cmd;
|
||||
}
|
||||
# if ENABLE_HUSH_FUNCTIONS
|
||||
{
|
||||
struct function *funcp;
|
||||
i -= ARRAY_SIZE(bltins2);
|
||||
for (funcp = G.top_func; funcp; funcp = funcp->next) {
|
||||
if (--i < 0)
|
||||
return funcp->name;
|
||||
}
|
||||
}
|
||||
# endif
|
||||
return NULL;
|
||||
}
|
||||
#endif
|
||||
|
|
@ -9106,7 +9191,7 @@ static NOINLINE void pseudo_exec_argv(nommu_save_t *nommu_save,
|
|||
* expand_assignments(): think about ... | var=`sleep 1` | ...
|
||||
*/
|
||||
free_strings(new_env);
|
||||
_exit(EXIT_SUCCESS);
|
||||
_exit_SUCCESS();
|
||||
}
|
||||
|
||||
sv_shadowed = G.shadowed_vars_pp;
|
||||
|
|
@ -9287,7 +9372,7 @@ static void pseudo_exec(nommu_save_t *nommu_save,
|
|||
|
||||
/* Case when we are here: ... | >file */
|
||||
debug_printf_exec("pseudo_exec'ed null command\n");
|
||||
_exit(EXIT_SUCCESS);
|
||||
_exit_SUCCESS();
|
||||
}
|
||||
|
||||
#if ENABLE_HUSH_JOB
|
||||
|
|
@ -9894,7 +9979,7 @@ static NOINLINE int run_pipe(struct pipe *pi)
|
|||
#endif
|
||||
debug_printf_env("set shell var:'%s'->'%s'\n", *argv, p);
|
||||
#ifndef __U_BOOT__
|
||||
if (set_local_var(p, /*flag:*/ 0)) {
|
||||
if (set_local_var0(p)) {
|
||||
#else /* __U_BOOT__ */
|
||||
if (set_local_var_modern(p, /*flag:*/ 0)) {
|
||||
#endif
|
||||
|
|
@ -10295,7 +10380,7 @@ static int run_list(struct pipe *pi)
|
|||
#endif
|
||||
|
||||
#ifndef __U_BOOT__
|
||||
debug_printf_exec("run_list start lvl %d\n", G.run_list_level);
|
||||
debug_printf_exec("run_list lvl %d start\n", G.run_list_level);
|
||||
debug_enter();
|
||||
#endif /* !__U_BOOT__ */
|
||||
|
||||
|
|
@ -10361,7 +10446,7 @@ static int run_list(struct pipe *pi)
|
|||
#endif /* !__U_BOOT__ */
|
||||
|
||||
IF_HAS_KEYWORDS(rword = pi->res_word;)
|
||||
debug_printf_exec(": rword=%d cond_code=%d last_rword=%d\n",
|
||||
debug_printf_exec(": rword:%d cond_code:%d last_rword:%d\n",
|
||||
rword, cond_code, last_rword);
|
||||
|
||||
sv_errexit_depth = G.errexit_depth;
|
||||
|
|
@ -10395,23 +10480,29 @@ static int run_list(struct pipe *pi)
|
|||
}
|
||||
}
|
||||
last_followup = pi->followup;
|
||||
IF_HAS_KEYWORDS(last_rword = rword;)
|
||||
#if ENABLE_HUSH_IF
|
||||
if (cond_code) {
|
||||
if (cond_code != 0) {
|
||||
if (rword == RES_THEN) {
|
||||
/* if false; then ... fi has exitcode 0! */
|
||||
G.last_exitcode = rcode = EXIT_SUCCESS;
|
||||
/* "if <false> THEN cmd": skip cmd */
|
||||
debug_printf_exec("skipped THEN cmd because IF condition was false\n");
|
||||
last_rword = rword;
|
||||
continue;
|
||||
}
|
||||
} else {
|
||||
if (rword == RES_ELSE || rword == RES_ELIF) {
|
||||
if (rword == RES_ELSE
|
||||
|| (rword == RES_ELIF && last_rword != RES_ELIF)
|
||||
) {
|
||||
/* "if <true> then ... ELSE/ELIF cmd":
|
||||
* skip cmd and all following ones */
|
||||
debug_printf_exec("skipped ELSE/ELIF branch because IF condition was true\n");
|
||||
break;
|
||||
}
|
||||
//if (rword == RES_THEN): "if <true> THEN cmd", run cmd (fall through)
|
||||
}
|
||||
#endif
|
||||
IF_HAS_KEYWORDS(last_rword = rword;)
|
||||
#if ENABLE_HUSH_LOOPS
|
||||
if (rword == RES_FOR) { /* && pi->num_cmds - always == 1 */
|
||||
if (!for_lcur) {
|
||||
|
|
@ -10420,7 +10511,7 @@ static int run_list(struct pipe *pi)
|
|||
static const char encoded_dollar_at[] ALIGN1 = {
|
||||
SPECIAL_VAR_SYMBOL, '@' | 0x80, SPECIAL_VAR_SYMBOL, '\0'
|
||||
}; /* encoded representation of "$@" */
|
||||
static const char *const encoded_dollar_at_argv[] = {
|
||||
static const char *const encoded_dollar_at_argv[] ALIGN_PTR = {
|
||||
encoded_dollar_at, NULL
|
||||
}; /* argv list with one element: "$@" */
|
||||
char **vals;
|
||||
|
|
@ -10451,7 +10542,7 @@ static int run_list(struct pipe *pi)
|
|||
/* Insert next value from for_lcur */
|
||||
/* note: *for_lcur already has quotes removed, $var expanded, etc */
|
||||
#ifndef __U_BOOT__
|
||||
set_local_var(xasprintf("%s=%s", pi->cmds[0].argv[0], *for_lcur++), /*flag:*/ 0);
|
||||
set_local_var_from_halves(pi->cmds[0].argv[0], *for_lcur++);
|
||||
#else /* __U_BOOT__ */
|
||||
/* We cannot use xasprintf, so we emulate it. */
|
||||
char *full_var;
|
||||
|
|
@ -10500,7 +10591,7 @@ static int run_list(struct pipe *pi)
|
|||
);
|
||||
/* TODO: which FNM_xxx flags to use? */
|
||||
cond_code = (fnmatch(pattern, case_word, /*flags:*/ 0) != 0);
|
||||
debug_printf_exec("fnmatch(pattern:'%s',str:'%s'):%d\n",
|
||||
debug_printf_exec("cond_code=fnmatch(pattern:'%s',str:'%s'):%d\n",
|
||||
pattern, case_word, cond_code);
|
||||
free(pattern);
|
||||
if (cond_code == 0) {
|
||||
|
|
@ -10547,8 +10638,11 @@ static int run_list(struct pipe *pi)
|
|||
G.flag_break_continue = 0;
|
||||
#endif
|
||||
#endif /* !__U_BOOT__ */
|
||||
#ifndef __U_BOOT__
|
||||
rcode = r = G.o_opt[OPT_O_NOEXEC] ? 0 : run_pipe(pi);
|
||||
/* NB: rcode is a smalluint, r is int */
|
||||
#else /* __U_BOOT__ */
|
||||
rcode = r = run_pipe(pi); /* NB: rcode is a smalluint, r is int */
|
||||
#ifdef __U_BOOT__
|
||||
if (r <= EXIT_RET_CODE) {
|
||||
int previous_rcode = G.last_exitcode;
|
||||
/*
|
||||
|
|
@ -10672,8 +10766,10 @@ static int run_list(struct pipe *pi)
|
|||
|
||||
/* Analyze how result affects subsequent commands */
|
||||
#if ENABLE_HUSH_IF
|
||||
if (rword == RES_IF || rword == RES_ELIF)
|
||||
if (rword == RES_IF || rword == RES_ELIF) {
|
||||
debug_printf_exec("cond_code=rcode:%d\n", rcode);
|
||||
cond_code = rcode;
|
||||
}
|
||||
#endif
|
||||
#ifndef __U_BOOT__
|
||||
check_jobs_and_continue:
|
||||
|
|
@ -10717,7 +10813,7 @@ static int run_list(struct pipe *pi)
|
|||
#endif
|
||||
#ifndef __U_BOOT__
|
||||
debug_leave();
|
||||
debug_printf_exec("run_list lvl %d return %d\n", G.run_list_level + 1, rcode);
|
||||
debug_printf_exec("run_list lvl %d return %d\n", G.run_list_level, rcode);
|
||||
#endif /* !__U_BOOT__ */
|
||||
return rcode;
|
||||
}
|
||||
|
|
@ -10838,6 +10934,9 @@ static int set_mode(int state, char mode, const char *o_opt)
|
|||
int idx;
|
||||
switch (mode) {
|
||||
case 'n':
|
||||
/* set -n has no effect in interactive shell */
|
||||
/* Try: while set -n; do echo $-; done */
|
||||
if (!G_interactive_fd)
|
||||
G.o_opt[OPT_O_NOEXEC] = state;
|
||||
break;
|
||||
case 'x':
|
||||
|
|
@ -10895,6 +10994,20 @@ int hush_main(int argc, char **argv)
|
|||
INIT_G();
|
||||
if (EXIT_SUCCESS != 0) /* if EXIT_SUCCESS == 0, it is already done */
|
||||
G.last_exitcode = EXIT_SUCCESS;
|
||||
#if !BB_MMU
|
||||
/* "Big heredoc" support via "sh -< STRING" invocation.
|
||||
* Check it first (do not bother to run the usual init code,
|
||||
* it is not needed for this case).
|
||||
*/
|
||||
if (argv[1]
|
||||
&& argv[1][0] == '-' && argv[1][1] == '<' /*&& !argv[1][2]*/
|
||||
/*&& argv[2] && !argv[3] - we don't check some conditions */
|
||||
) {
|
||||
full_write1_str(argv[2]);
|
||||
_exit(0);
|
||||
}
|
||||
G.argv0_for_re_execing = argv[0];
|
||||
#endif
|
||||
#if ENABLE_HUSH_TRAP
|
||||
# if ENABLE_HUSH_FUNCTIONS
|
||||
G.return_exitcode = -1;
|
||||
|
|
@ -10905,9 +11018,6 @@ int hush_main(int argc, char **argv)
|
|||
#if ENABLE_HUSH_FAST
|
||||
G.count_SIGCHLD++; /* ensure it is != G.handled_SIGCHLD */
|
||||
#endif
|
||||
#if !BB_MMU
|
||||
G.argv0_for_re_execing = argv[0];
|
||||
#endif
|
||||
|
||||
cached_getpid = getpid(); /* for tcsetpgrp() during init */
|
||||
G.root_pid = cached_getpid; /* for $PID (NOMMU can override via -$HEXPID:HEXPPID:...) */
|
||||
|
|
@ -11023,7 +11133,10 @@ int hush_main(int argc, char **argv)
|
|||
int opt = getopt(argc, argv, "+" /* stop at 1st non-option */
|
||||
"cexinsl"
|
||||
#if !BB_MMU
|
||||
"<:$:R:V:"
|
||||
"$:R:V:"
|
||||
# if ENABLE_HUSH_LINENO_VAR
|
||||
"L:"
|
||||
# endif
|
||||
# if ENABLE_HUSH_FUNCTIONS
|
||||
"F:"
|
||||
# endif
|
||||
|
|
@ -11042,6 +11155,29 @@ int hush_main(int argc, char **argv)
|
|||
/* Well, we cannot just declare interactiveness,
|
||||
* we have to have some stuff (ctty, etc) */
|
||||
/* G_interactive_fd++; */
|
||||
//There are a few cases where bash -i -c 'SCRIPT'
|
||||
//has visible effect (differs from bash -c 'SCRIPT'):
|
||||
//it ignores TERM:
|
||||
// bash -i -c 'kill $$; echo ALIVE'
|
||||
// ALIVE
|
||||
//it resets SIG_IGNed HUP to SIG_DFL:
|
||||
// trap '' hup; bash -i -c 'kill -hup $$; echo ALIVE'
|
||||
// Hangup [the message is not printed by bash, it's the shell which started it]
|
||||
//is talkative about jobs and exiting:
|
||||
// bash -i -c 'sleep 1 & exit'
|
||||
// [1] 16170
|
||||
// exit
|
||||
//includes $ENV file (only if run as "sh"):
|
||||
// echo last >/tmp/ENV; ENV=/tmp/ENV sh -i -c 'echo HERE'
|
||||
// last: cannot open /var/log/wtmp: No such file or directory
|
||||
// HERE
|
||||
//(under "bash", it's the opposite: it runs $BASH_ENV file only *without* -i).
|
||||
//
|
||||
//ash -i -c 'sleep 3; sleep 3', on ^C, drops into a prompt instead of exiting
|
||||
//(this may be a bug, bash does not do this).
|
||||
//(ash -i -c 'sleep 3' won't show this, the last command gets auto-"exec"ed)
|
||||
//
|
||||
//None of the above feel like useful features people would rely on.
|
||||
break;
|
||||
case 's':
|
||||
G.opt_s = 1;
|
||||
|
|
@ -11050,9 +11186,6 @@ int hush_main(int argc, char **argv)
|
|||
flags |= OPT_login;
|
||||
break;
|
||||
#if !BB_MMU
|
||||
case '<': /* "big heredoc" support */
|
||||
full_write1_str(optarg);
|
||||
_exit(0);
|
||||
case '$': {
|
||||
unsigned long long empty_trap_mask;
|
||||
|
||||
|
|
@ -11102,6 +11235,11 @@ int hush_main(int argc, char **argv)
|
|||
case 'V':
|
||||
set_local_var(xstrdup(optarg), opt == 'R' ? SETFLAG_MAKE_RO : 0);
|
||||
break;
|
||||
# if ENABLE_HUSH_LINENO_VAR
|
||||
case 'L':
|
||||
G.parse_lineno = xatou(optarg);
|
||||
break;
|
||||
# endif
|
||||
# if ENABLE_HUSH_FUNCTIONS
|
||||
case 'F': {
|
||||
struct function *funcp = new_function(optarg);
|
||||
|
|
@ -11306,8 +11444,11 @@ int hush_main(int argc, char **argv)
|
|||
|
||||
# if ENABLE_FEATURE_EDITING
|
||||
G.line_input_state = new_line_input_t(FOR_SHELL);
|
||||
# if EDITING_HAS_get_exe_name
|
||||
G.line_input_state->get_exe_name = get_builtin_name;
|
||||
# if ENABLE_FEATURE_TAB_COMPLETION
|
||||
G.line_input_state->get_exe_name = hush_command_name;
|
||||
# endif
|
||||
# if EDITING_HAS_sh_get_var
|
||||
G.line_input_state->sh_get_var = get_local_var_value;
|
||||
# endif
|
||||
# endif
|
||||
# if ENABLE_HUSH_SAVEHISTORY && MAX_HISTORY > 0
|
||||
|
|
@ -11393,6 +11534,11 @@ static int FAST_FUNC builtin_true(char **argv UNUSED_PARAM)
|
|||
return 0;
|
||||
}
|
||||
|
||||
static int FAST_FUNC builtin_false(char **argv UNUSED_PARAM)
|
||||
{
|
||||
return 1;
|
||||
}
|
||||
|
||||
#if ENABLE_HUSH_TEST || ENABLE_HUSH_ECHO || ENABLE_HUSH_PRINTF || ENABLE_HUSH_KILL
|
||||
static NOINLINE int run_applet_main(char **argv, int (*applet_main_func)(int argc, char **argv))
|
||||
{
|
||||
|
|
@ -11443,14 +11589,6 @@ static int FAST_FUNC builtin_history(char **argv UNUSED_PARAM)
|
|||
}
|
||||
#endif
|
||||
|
||||
static char **skip_dash_dash(char **argv)
|
||||
{
|
||||
argv++;
|
||||
if (argv[0] && argv[0][0] == '-' && argv[0][1] == '-' && argv[0][2] == '\0')
|
||||
argv++;
|
||||
return argv;
|
||||
}
|
||||
|
||||
static int FAST_FUNC builtin_cd(char **argv)
|
||||
{
|
||||
const char *newdir;
|
||||
|
|
@ -11733,9 +11871,15 @@ static int FAST_FUNC builtin_umask(char **argv)
|
|||
}
|
||||
#endif
|
||||
|
||||
#if ENABLE_HUSH_EXPORT || ENABLE_HUSH_TRAP
|
||||
#if ENABLE_HUSH_EXPORT || ENABLE_HUSH_READONLY || ENABLE_HUSH_SET || ENABLE_HUSH_TRAP
|
||||
static void print_escaped(const char *s)
|
||||
{
|
||||
//TODO? bash "set" does not quote variables which contain only alnums and "%+,-./:=@_~",
|
||||
// (but "export" quotes all variables, even with only these chars).
|
||||
// I think quoting strings with %+,=~ looks better
|
||||
// (example: "set" printing var== instead of var='=' looks strange)
|
||||
// IOW: do not quote "-./:@_": / is used in pathnames, : in PATH, -._ often in file names, @ in emails
|
||||
|
||||
if (*s == '\'')
|
||||
goto squote;
|
||||
do {
|
||||
|
|
@ -11764,7 +11908,7 @@ static int helper_export_local(char **argv, unsigned flags)
|
|||
if (*name_end == '\0') {
|
||||
struct variable *var, **vpp;
|
||||
|
||||
vpp = get_ptr_to_local_var(name, name_end - name);
|
||||
vpp = get_ptr_to_local_var(name);
|
||||
var = vpp ? *vpp : NULL;
|
||||
|
||||
if (flags & SETFLAG_UNEXPORT) {
|
||||
|
|
@ -11866,8 +12010,8 @@ static int FAST_FUNC builtin_export(char **argv)
|
|||
|
||||
if (!p) /* wtf? take next variable */
|
||||
continue;
|
||||
/* export var= */
|
||||
printf("export %.*s", (int)(p - s) + 1, s);
|
||||
/* "export VAR=" */
|
||||
printf("%s %.*s", "export", (int)(p - s) + 1, s);
|
||||
print_escaped(p + 1);
|
||||
putchar('\n');
|
||||
# endif
|
||||
|
|
@ -11888,6 +12032,9 @@ static int FAST_FUNC builtin_local(char **argv)
|
|||
bb_error_msg("%s: not in a function", argv[0]);
|
||||
return EXIT_FAILURE; /* bash compat */
|
||||
}
|
||||
//TODO? ash and bash support "local -" special form,
|
||||
//which saves/restores $- around function call (including async returns, such as ^C)
|
||||
//(IOW: it makes "set +/-..." effects local)
|
||||
argv++;
|
||||
/* Since all builtins run in a nested variable level,
|
||||
* need to use level - 1 here. Or else the variable will be removed at once
|
||||
|
|
@ -11908,8 +12055,15 @@ static int FAST_FUNC builtin_readonly(char **argv)
|
|||
struct variable *e;
|
||||
for (e = G.top_var; e; e = e->next) {
|
||||
if (e->flg_read_only) {
|
||||
//TODO: quote value: readonly VAR='VAL'
|
||||
printf("readonly %s\n", e->varstr);
|
||||
const char *s = e->varstr;
|
||||
const char *p = strchr(s, '=');
|
||||
|
||||
if (!p) /* wtf? take next variable */
|
||||
continue;
|
||||
/* "readonly VAR=" */
|
||||
printf("%s %.*s", "readonly", (int)(p - s) + 1, s);
|
||||
print_escaped(p + 1);
|
||||
putchar('\n');
|
||||
}
|
||||
}
|
||||
return EXIT_SUCCESS;
|
||||
|
|
@ -11987,8 +12141,17 @@ static int FAST_FUNC builtin_set(char **argv)
|
|||
|
||||
if (arg == NULL) {
|
||||
struct variable *e;
|
||||
for (e = G.top_var; e; e = e->next)
|
||||
puts(e->varstr);
|
||||
for (e = G.top_var; e; e = e->next) {
|
||||
const char *s = e->varstr;
|
||||
const char *p = strchr(s, '=');
|
||||
|
||||
if (!p) /* wtf? take next variable */
|
||||
continue;
|
||||
/* var= */
|
||||
printf("%.*s", (int)(p - s) + 1, s);
|
||||
print_escaped(p + 1);
|
||||
putchar('\n');
|
||||
}
|
||||
return EXIT_SUCCESS;
|
||||
}
|
||||
|
||||
|
|
|
|||
Loading…
Reference in a new issue