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authorGravatar Eric Andersen <andersen@codepoet.org>2001-07-12 20:26:32 +0000
committerGravatar Eric Andersen <andersen@codepoet.org>2001-07-12 20:26:32 +0000
commit7467c8d3b6a50e2cbd8db750963d40b420ad38d1 (patch)
tree10dcece1e0bb88e35aa95c3a68896ad426e43f7a /shell
parentf69bfc76fa7acb0c87fa3f3b319fde361a8315a8 (diff)
downloadbusybox-7467c8d3b6a50e2cbd8db750963d40b420ad38d1.tar.gz
busybox-7467c8d3b6a50e2cbd8db750963d40b420ad38d1.tar.bz2
Patch from vodz:
Changed email address cmdedit API change optimizations for traceroute and md5sum added a new shared create_icmp_socket() function
Diffstat (limited to 'shell')
-rw-r--r--shell/ash.c34
-rw-r--r--shell/cmdedit.c88
-rw-r--r--shell/cmdedit.h2
-rw-r--r--shell/hush.c7
-rw-r--r--shell/lash.c6
-rw-r--r--shell/msh.c12
6 files changed, 44 insertions, 105 deletions
diff --git a/shell/ash.c b/shell/ash.c
index 985507341..334d2fddd 100644
--- a/shell/ash.c
+++ b/shell/ash.c
@@ -26,7 +26,7 @@
* package.
*
* Modified by Erik Andersen <andersee@debian.org> and
- * Vladimir Oleynik <vodz@usa.net> to be used in busybox
+ * Vladimir Oleynik <dzo@simtreas.ru> to be used in busybox
*
*
* Original copyright notice is retained at the end of this file.
@@ -4995,7 +4995,7 @@ err1:
if (--in.nleft < 0) {
if (in.fd < 0)
break;
- while ((i = read(in.fd, buf, sizeof buf)) < 0 && errno == EINTR);
+ i = safe_read(in.fd, buf, sizeof buf);
TRACE(("expbackq: read returns %d\n", i));
if (i <= 0)
break;
@@ -6091,10 +6091,8 @@ init(void) {
* interactive shell and control is returned to the main command loop.
*/
-#ifdef ASH_ALIAS
/* 1 == check for aliases, 2 == also check for assignments */
-static int checkalias;
-#endif
+static int checkalias; /* also used in no alias mode for check assignments */
static void
reset(void) {
@@ -6117,9 +6115,7 @@ reset(void) {
{
tokpushback = 0;
checkkwd = 0;
-#ifdef ASH_ALIAS
checkalias = 0;
-#endif
}
/* from redir.c: */
@@ -6137,7 +6133,6 @@ reset(void) {
*/
#ifdef BB_FEATURE_COMMAND_EDITING
-unsigned int shell_context;
static const char * cmdedit_prompt;
static inline void putprompt(const char *s) {
cmdedit_prompt = s;
@@ -6206,23 +6201,18 @@ preadfd(void)
retry:
#ifdef BB_FEATURE_COMMAND_EDITING
{
- if (parsefile->fd)
- nr = read(parsefile->fd, buf, BUFSIZ - 1);
+ if (!iflag)
+ nr = safe_read(parsefile->fd, buf, BUFSIZ - 1);
else {
- do {
cmdedit_read_input((char*)cmdedit_prompt, buf);
nr = strlen(buf);
- } while (nr <=0 || shell_context);
- cmdedit_terminate();
}
}
#else
- nr = read(parsefile->fd, buf, BUFSIZ - 1);
+ nr = safe_read(parsefile->fd, buf, BUFSIZ - 1);
#endif
if (nr < 0) {
- if (errno == EINTR)
- goto retry;
if (parsefile->fd == 0 && errno == EWOULDBLOCK) {
int flags = fcntl(0, F_GETFL, 0);
if (flags >= 0 && flags & O_NONBLOCK) {
@@ -9872,9 +9862,7 @@ simplecmd() {
redir = NULL;
rpp = &redir;
-#ifdef ASH_ALIAS
checkalias = 2;
-#endif
for (;;) {
switch (readtoken()) {
case TWORD:
@@ -10036,9 +10024,10 @@ peektoken() {
static int
readtoken() {
int t;
+
#ifdef ASH_ALIAS
- int savecheckkwd = checkkwd;
int savecheckalias = checkalias;
+ int savecheckkwd = checkkwd;
struct alias *ap;
#endif
@@ -10083,13 +10072,14 @@ top:
}
}
-#ifdef ASH_ALIAS
+
if (t != TWORD) {
if (t != TREDIR) {
checkalias = 0;
}
} else if (checkalias == 2 && isassignment(wordtext)) {
lasttoken = t = TASSIGN;
+#ifdef ASH_ALIAS
} else if (checkalias) {
if (!quoteflag && (ap = lookupalias(wordtext, 1)) != NULL) {
if (*ap->val) {
@@ -10099,8 +10089,8 @@ top:
goto top;
}
checkalias = 0;
- }
#endif
+ }
out:
#ifdef DEBUG
if (!alreadyseen)
@@ -12927,7 +12917,7 @@ findvar(struct var **vpp, const char *name)
/*
* Copyright (c) 1999 Herbert Xu <herbert@debian.org>
* This file contains code for the times builtin.
- * $Id: ash.c,v 1.9 2001/07/10 16:57:09 andersen Exp $
+ * $Id: ash.c,v 1.10 2001/07/12 20:26:31 andersen Exp $
*/
static int timescmd (int argc, char **argv)
{
diff --git a/shell/cmdedit.c b/shell/cmdedit.c
index 4f124d647..540eb7ea7 100644
--- a/shell/cmdedit.c
+++ b/shell/cmdedit.c
@@ -3,7 +3,7 @@
* Termios command line History and Editting.
*
* Copyright (c) 1986-2001 may safely be consumed by a BSD or GPL license.
- * Written by: Vladimir Oleynik <vodz@usa.net>
+ * Written by: Vladimir Oleynik <dzo@simtreas.ru>
*
* Used ideas:
* Adam Rogoyski <rogoyski@cs.utexas.edu>
@@ -123,9 +123,8 @@ volatile int handlers_sets = 0; /* Set next bites: */
enum {
SET_ATEXIT = 1, /* when atexit() has been called
and get euid,uid,gid to fast compare */
- SET_TERM_HANDLERS = 2, /* set many terminates signal handlers */
- SET_WCHG_HANDLERS = 4, /* winchg signal handler */
- SET_RESET_TERM = 8, /* if the terminal needs to be reset upon exit */
+ SET_WCHG_HANDLERS = 2, /* winchg signal handler */
+ SET_RESET_TERM = 4, /* if the terminal needs to be reset upon exit */
};
@@ -142,10 +141,6 @@ static
#endif
char *cmdedit_prompt; /* --- "" - - "" - -"- --""-- --""--- */
-/* Link into lash to reset context to 0 on ^C and such */
-extern unsigned int shell_context;
-
-
#ifdef BB_FEATURE_GETUSERNAME_AND_HOMEDIR
static char *user_buf = "";
static char *home_pwd_buf = "";
@@ -319,6 +314,7 @@ static void put_prompt(void)
out1str(cmdedit_prompt);
cmdedit_x = cmdedit_prmt_len; /* count real x terminal position */
cursor = 0;
+ cmdedit_y = 0; /* new quasireal y */
}
#ifndef BB_FEATURE_SH_FANCY_PROMPT
@@ -456,7 +452,6 @@ static void redraw(int y, int back_cursor)
{
if (y > 0) /* up to start y */
printf("\033[%dA", y);
- cmdedit_y = 0; /* new quasireal y */
putchar('\r');
put_prompt();
input_end(); /* rewrite */
@@ -497,14 +492,6 @@ static void input_forward(void)
}
-static void clean_up_and_die(int sig)
-{
- goto_new_line();
- if (sig != SIGINT)
- exit(EXIT_SUCCESS); /* cmdedit_reset_term() called in atexit */
- cmdedit_reset_term();
-}
-
static void cmdedit_setwidth(int w, int redraw_flg)
{
cmdedit_termw = cmdedit_prmt_len + 2;
@@ -525,7 +512,7 @@ static void cmdedit_setwidth(int w, int redraw_flg)
}
}
-extern void cmdedit_init(void)
+static void cmdedit_init(void)
{
cmdedit_prmt_len = 0;
if ((handlers_sets & SET_WCHG_HANDLERS) == 0) {
@@ -557,14 +544,6 @@ extern void cmdedit_init(void)
handlers_sets |= SET_ATEXIT;
atexit(cmdedit_reset_term); /* be sure to do this only once */
}
-
- if ((handlers_sets & SET_TERM_HANDLERS) == 0) {
- signal(SIGKILL, clean_up_and_die);
- signal(SIGINT, clean_up_and_die);
- signal(SIGQUIT, clean_up_and_die);
- signal(SIGTERM, clean_up_and_die);
- handlers_sets |= SET_TERM_HANDLERS;
- }
}
#ifdef BB_FEATURE_COMMAND_TAB_COMPLETION
@@ -1220,7 +1199,7 @@ extern void cmdedit_read_input(char *prompt, char command[BUFSIZ])
fflush(stdout); /* buffered out to fast */
- if (read(0, &c, 1) < 1)
+ if (safe_read(0, &c, 1) < 1)
/* if we can't read input then exit */
goto prepare_to_die;
@@ -1241,22 +1220,21 @@ extern void cmdedit_read_input(char *prompt, char command[BUFSIZ])
break;
case 3:
/* Control-c -- stop gathering input */
-
- /* Link into lash to reset context to 0 on ^C and such */
- shell_context = 0;
-
- /* Go to the next line */
goto_new_line();
command[0] = 0;
-
- return;
+ len = 0;
+ lastWasTab = FALSE;
+ put_prompt();
+ break;
case 4:
/* Control-d -- Delete one character, or exit
* if the len=0 and no chars to delete */
if (len == 0) {
prepare_to_die:
printf("exit");
- clean_up_and_die(0);
+ goto_new_line();
+ /* cmdedit_reset_term() called in atexit */
+ exit(EXIT_SUCCESS);
} else {
input_delete();
}
@@ -1307,12 +1285,12 @@ prepare_to_die:
case ESC:{
/* escape sequence follows */
- if (read(0, &c, 1) < 1)
- return;
+ if (safe_read(0, &c, 1) < 1)
+ goto prepare_to_die;
/* different vt100 emulations */
if (c == '[' || c == 'O') {
- if (read(0, &c, 1) < 1)
- return;
+ if (safe_read(0, &c, 1) < 1)
+ goto prepare_to_die;
}
switch (c) {
#ifdef BB_FEATURE_COMMAND_TAB_COMPLETION
@@ -1376,8 +1354,8 @@ prepare_to_die:
}
if (c >= '1' && c <= '9')
do
- if (read(0, &c, 1) < 1)
- return;
+ if (safe_read(0, &c, 1) < 1)
+ goto prepare_to_die;
while (c != '~');
break;
}
@@ -1386,8 +1364,8 @@ prepare_to_die:
#ifdef BB_FEATURE_NONPRINTABLE_INVERSE_PUT
/* Control-V -- Add non-printable symbol */
if (c == 22) {
- if (read(0, &c, 1) < 1)
- return;
+ if (safe_read(0, &c, 1) < 1)
+ goto prepare_to_die;
if (c == 0) {
beep();
break;
@@ -1485,23 +1463,10 @@ prepare_to_die:
#if defined(BB_FEATURE_SH_FANCY_PROMPT)
free(cmdedit_prompt);
#endif
- return;
+ cmdedit_reset_term();
}
-/* Undo the effects of cmdedit_init(). */
-extern void cmdedit_terminate(void)
-{
- cmdedit_reset_term();
- if ((handlers_sets & SET_TERM_HANDLERS) != 0) {
- signal(SIGKILL, SIG_DFL);
- signal(SIGINT, SIG_DFL);
- signal(SIGQUIT, SIG_DFL);
- signal(SIGTERM, SIG_DFL);
- signal(SIGWINCH, SIG_DFL);
- handlers_sets &= ~SET_TERM_HANDLERS;
- }
-}
#endif /* BB_FEATURE_COMMAND_EDITING */
@@ -1515,8 +1480,6 @@ const char *memory_exhausted = "Memory exhausted";
#include <locale.h>
#endif
-unsigned int shell_context;
-
int main(int argc, char **argv)
{
char buff[BUFSIZ];
@@ -1532,15 +1495,16 @@ int main(int argc, char **argv)
#ifdef BB_FEATURE_NONPRINTABLE_INVERSE_PUT
setlocale(LC_ALL, "");
#endif
- shell_context = 1;
- do {
+ while(1) {
int l;
cmdedit_read_input(prompt, buff);
l = strlen(buff);
+ if(l==0)
+ break;
if(l > 0 && buff[l-1] == '\n')
buff[l-1] = 0;
printf("*** cmdedit_read_input() returned line =%s=\n", buff);
- } while (shell_context);
+ }
printf("*** cmdedit_read_input() detect ^C\n");
return 0;
}
diff --git a/shell/cmdedit.h b/shell/cmdedit.h
index 9e3e44b36..1482da3b8 100644
--- a/shell/cmdedit.h
+++ b/shell/cmdedit.h
@@ -1,8 +1,6 @@
#ifndef CMDEDIT_H
#define CMDEDIT_H
-void cmdedit_init(void);
-void cmdedit_terminate(void);
void cmdedit_read_input(char* promptStr, char* command); /* read a line of input */
#endif /* CMDEDIT_H */
diff --git a/shell/hush.c b/shell/hush.c
index b74b9d159..134404251 100644
--- a/shell/hush.c
+++ b/shell/hush.c
@@ -237,10 +237,6 @@ unsigned int global_argc;
unsigned int last_return_code;
extern char **environ; /* This is in <unistd.h>, but protected with __USE_GNU */
-/* Variables we export */
-unsigned int shell_context; /* Used in cmdedit.c to reset the
- * context when someone hits ^C */
-
/* "globals" within this file */
static char *ifs;
static char map[256];
@@ -883,7 +879,6 @@ static void get_user_input(struct in_str *i)
** child processes (rob@sysgo.de)
*/
cmdedit_read_input(prompt_str, the_command);
- cmdedit_terminate();
#else
fputs(prompt_str, stdout);
fflush(stdout);
@@ -1411,6 +1406,7 @@ static int run_pipe_real(struct pipe *pi)
/* Set the handling for job control signals back to the default. */
signal(SIGINT, SIG_DFL);
signal(SIGQUIT, SIG_DFL);
+ signal(SIGTERM, SIG_DFL);
signal(SIGTSTP, SIG_DFL);
signal(SIGTTIN, SIG_DFL);
signal(SIGTTOU, SIG_DFL);
@@ -2551,6 +2547,7 @@ static void setup_job_control()
/* Ignore interactive and job-control signals. */
signal(SIGINT, SIG_IGN);
signal(SIGQUIT, SIG_IGN);
+ signal(SIGTERM, SIG_IGN);
signal(SIGTSTP, SIG_IGN);
signal(SIGTTIN, SIG_IGN);
signal(SIGTTOU, SIG_IGN);
diff --git a/shell/lash.c b/shell/lash.c
index 7c932a910..8f8609534 100644
--- a/shell/lash.c
+++ b/shell/lash.c
@@ -170,9 +170,7 @@ static struct built_in_command bltins_forking[] = {
};
-/* Variables we export */
-unsigned int shell_context; /* Used in cmdedit.c to reset the
- context when someone hits ^C */
+static int shell_context; /* Type prompt trigger (PS1 or PS2) */
/* Globals that are static to this file */
@@ -716,7 +714,6 @@ static int get_command(FILE * source, char *command)
** child processes (rob@sysgo.de)
*/
cmdedit_read_input(prompt_str, command);
- cmdedit_terminate();
return 0;
#else
fputs(prompt_str, stdout);
@@ -1557,7 +1554,6 @@ int shell_main(int argc_l, char **argv_l)
/* These variables need re-initializing when recursing */
last_jobid = 0;
- shell_context = 0;
local_pending_command = NULL;
close_me_head = NULL;
job_list.head = NULL;
diff --git a/shell/msh.c b/shell/msh.c
index 230d74f5a..8f046e794 100644
--- a/shell/msh.c
+++ b/shell/msh.c
@@ -682,8 +682,7 @@ static void * brkaddr;
#ifdef BB_FEATURE_COMMAND_EDITING
-char * current_prompt;
-unsigned int shell_context;
+static char * current_prompt;
#endif
@@ -4449,9 +4448,7 @@ register struct ioarg *ap;
if ((i = ap->afid != bp->id) || bp->bufp == bp->ebufp) {
if (i)
lseek(ap->afile, ap->afpos, 0);
- do {
- i = read(ap->afile, bp->buf, sizeof(bp->buf));
- } while (i < 0 && errno == EINTR);
+ i = safe_read(ap->afile, bp->buf, sizeof(bp->buf));
if (i <= 0) {
closef(ap->afile);
return 0;
@@ -4470,7 +4467,6 @@ register struct ioarg *ap;
while (size == 0 || position >= size) {
cmdedit_read_input(current_prompt, mycommand);
- cmdedit_terminate();
size = strlen(mycommand);
position = 0;
}
@@ -4480,9 +4476,7 @@ register struct ioarg *ap;
} else
#endif
{
- do {
- i = read(ap->afile, &c, sizeof(c));
- } while (i < 0 && errno == EINTR);
+ i = safe_read(ap->afile, &c, sizeof(c));
return(i == sizeof(c)? c&0177: (closef(ap->afile), 0));
}
}