#include "busybox.h"
-#include <stdio.h>
-#include <stdlib.h>
-#include <ctype.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <signal.h>
-#include <string.h>
-#include <sys/ioctl.h>
-#include <sys/wait.h>
-#include <unistd.h>
#include <getopt.h>
-#include <termios.h>
#include "cmdedit.h"
#ifdef CONFIG_LOCALE_SUPPORT
ELSE_EXP_CONTEXT = 0x10
};
+#define LASH_OPT_DONE (1)
+#define LASH_OPT_SAW_QUOTE (2)
+
#ifdef CONFIG_LASH_PIPE_N_REDIRECTS
struct redir_struct {
enum redir_type type; /* type of redirection */
/* Globals that are static to this file */
static const char *cwd;
-static char *local_pending_command = NULL;
+static char *local_pending_command;
static struct jobset job_list = { NULL, NULL };
static int argc;
static char **argv;
va_end(args);
}
#else
-static inline void debug_printf(const char *format, ...) { }
+static inline void debug_printf(const char ATTRIBUTE_UNUSED *format, ...) { }
#endif
/*
else
newdir = child->argv[1];
if (chdir(newdir)) {
- printf("cd: %s: %m\n", newdir);
+ bb_perror_msg("cd: %s", newdir);
return EXIT_FAILURE;
}
cwd = xgetcwd((char *)cwd);
}
/* built-in 'help' handler */
-static int builtin_help(struct child_prog *dummy)
+static int builtin_help(struct child_prog ATTRIBUTE_UNUSED *dummy)
{
struct built_in_command *x;
- printf("\nBuilt-in commands:\n");
- printf("-------------------\n");
+ printf("\nBuilt-in commands:\n"
+ "-------------------\n");
for (x = bltins; x->cmd; x++) {
if (x->descr==NULL)
continue;
continue;
printf("%s\t%s\n", x->cmd, x->descr);
}
- printf("\n\n");
+ putchar('\n');
return EXIT_SUCCESS;
}
/* built-in 'pwd' handler */
-static int builtin_pwd(struct child_prog *dummy)
+static int builtin_pwd(struct child_prog ATTRIBUTE_UNUSED *dummy)
{
cwd = xgetcwd((char *)cwd);
if (!cwd)
}
res = putenv(v);
if (res)
- fprintf(stderr, "export: %m\n");
+ bb_perror_msg("export");
#ifdef CONFIG_FEATURE_SH_FANCY_PROMPT
if (strncmp(v, "PS1=", 4)==0)
PS1 = getenv("PS1");
/* built-in 'read VAR' handler */
static int builtin_read(struct child_prog *child)
{
- int res = 0, len, newlen;
+ int res = 0, len;
char *s;
char string[MAX_READ];
string[len++] = '=';
string[len] = '\0';
fgets(&string[len], sizeof(string) - len, stdin); /* read string */
- newlen = strlen(string);
- if(newlen > len)
- string[--newlen] = '\0'; /* chomp trailing newline */
+ res = strlen(string);
+ if (res > len)
+ string[--res] = '\0'; /* chomp trailing newline */
/*
** string should now contain "VAR=<value>"
** copy it (putenv() won't do that, so we must make sure
** the string resides in a static buffer!)
*/
res = -1;
- if((s = strdup(string)))
+ if ((s = strdup(string)))
res = putenv(s);
if (res)
- fprintf(stderr, "read: %m\n");
+ bb_perror_msg("read");
}
else
fgets(string, sizeof(string), stdin);
FILE *input;
int status;
- if (child->argv[1] == NULL)
- return EXIT_FAILURE;
-
- input = fopen(child->argv[1], "r");
+ input = fopen_or_warn(child->argv[1], "r");
if (!input) {
- printf( "Couldn't open file '%s'\n", child->argv[1]);
return EXIT_FAILURE;
}
/* child stopped */
job->stopped_progs++;
job->progs[prognum].is_stopped = 1;
-
-#if 0
- /* Printing this stuff is a pain, since it tends to
- * overwrite the prompt an inconveinient moments. So
- * don't do that. */
- if (job->stopped_progs == job->num_progs) {
- printf(JOB_STATUS_FORMAT, job->jobid, "Stopped",
- job->text);
- }
-#endif
}
}
if (shell_context == 0) {
free(PS1);
PS1=xmalloc(strlen(cwd)+4);
- sprintf(PS1, "%s %s", cwd, ( geteuid() != 0 ) ? "$ ":"# ");
+ sprintf(PS1, "%s %c ", cwd, ( geteuid() != 0 ) ? '$': '#');
*prompt_str = PS1;
} else {
*prompt_str = PS2;
if (!fgets(command, BUFSIZ - 2, source)) {
if (source == stdin)
- printf("\n");
+ puts("");
return 1;
}
return 0;
}
-static char* itoa(register int i)
-{
- static char a[7]; /* Max 7 ints */
- register char *b = a + sizeof(a) - 1;
- int sign = (i < 0);
-
- if (sign)
- i = -i;
- *b = 0;
- do
- {
- *--b = '0' + (i % 10);
- i /= 10;
- }
- while (i);
- if (sign)
- *--b = '-';
- return b;
-}
-
static char * strsep_space( char *string, int * ix)
{
- char *token;
-
/* Short circuit the trivial case */
if ( !string || ! string[*ix])
return NULL;
/* Find the end of the token. */
- while( string[*ix] && !isspace(string[*ix]) ) {
+ while (string[*ix] && !isspace(string[*ix]) ) {
(*ix)++;
}
/* Find the end of any whitespace trailing behind
* the token and let that be part of the token */
- while( string[*ix] && isspace(string[*ix]) ) {
+ while (string[*ix] && (isspace)(string[*ix]) ) {
(*ix)++;
}
return NULL;
}
- token = bb_xstrndup(string, *ix);
-
- return token;
+ return xstrndup(string, *ix);
}
static int expand_arguments(char *command)
expand_t expand_result;
char *tmpcmd, *cmd, *cmd_copy;
char *src, *dst, *var;
- const char *out_of_space = "out of space during expansion";
+ const char * const out_of_space = "out of space during expansion";
int flags = GLOB_NOCHECK
#ifdef GLOB_BRACE
| GLOB_BRACE
/* We need a clean copy, so strsep can mess up the copy while
* we write stuff into the original (in a minute) */
- cmd = cmd_copy = bb_xstrdup(command);
+ cmd = cmd_copy = xstrdup(command);
*command = '\0';
for (ix = 0, tmpcmd = cmd;
(tmpcmd = strsep_space(cmd, &ix)) != NULL; cmd += ix, ix=0) {
num_skip_chars=1;
} else {
src=dst+1;
- while(isalnum(*src) || *src=='_') src++;
+ while((isalnum)(*src) || *src=='_') src++;
}
if (src == NULL) {
src = dst+dstlen;
char *command;
char *return_command = NULL;
char *src, *buf;
- int argc_l = 0;
- int done = 0;
+ int argc_l;
+ int flag;
int argv_alloced;
- int saw_quote = 0;
char quote = '\0';
struct child_prog *prog;
#ifdef CONFIG_LASH_PIPE_N_REDIRECTS
#endif
/* skip leading white space */
- while (**command_ptr && isspace(**command_ptr))
- (*command_ptr)++;
+ *command_ptr = skip_whitespace(*command_ptr);
/* this handles empty lines or leading '#' characters */
if (!**command_ptr || (**command_ptr == '#')) {
prog->argv = xmalloc(sizeof(*prog->argv) * argv_alloced);
prog->argv[0] = job->cmdbuf;
+ flag = argc_l = 0;
buf = command;
src = *command_ptr;
- while (*src && !done) {
+ while (*src && !(flag & LASH_OPT_DONE)) {
if (quote == *src) {
quote = '\0';
} else if (quote) {
*src == ']') *buf++ = '\\';
*buf++ = *src;
} else if (isspace(*src)) {
- if (*prog->argv[argc_l] || saw_quote) {
+ if (*prog->argv[argc_l] || flag & LASH_OPT_SAW_QUOTE) {
buf++, argc_l++;
/* +1 here leaves room for the NULL which ends argv */
if ((argc_l + 1) == argv_alloced) {
argv_alloced);
}
prog->argv[argc_l] = buf;
- saw_quote = 0;
+ flag ^= LASH_OPT_SAW_QUOTE;
}
} else
switch (*src) {
case '"':
case '\'':
quote = *src;
- saw_quote = 1;
+ flag |= LASH_OPT_SAW_QUOTE;
break;
case '#': /* comment */
if (*(src-1)== '$')
*buf++ = *src;
else
- done = 1;
+ flag |= LASH_OPT_DONE;
break;
#ifdef CONFIG_LASH_PIPE_N_REDIRECTS
/* This isn't POSIX sh compliant. Oh well. */
chptr = src;
- while (isspace(*chptr))
- chptr++;
+ chptr = skip_whitespace(chptr);
if (!*chptr) {
bb_error_msg("file name expected after %c", *(src-1));
case '|': /* pipe */
/* finish this command */
- if (*prog->argv[argc_l] || saw_quote)
+ if (*prog->argv[argc_l] || flag & LASH_OPT_SAW_QUOTE)
argc_l++;
if (!argc_l) {
- bb_error_msg("empty command in pipe");
- free_job(job);
- job->num_progs=0;
- return 1;
+ goto empty_command_in_pipe;
}
prog->argv[argc_l] = NULL;
prog->argv[0] = ++buf;
src++;
- while (*src && isspace(*src))
- src++;
+ src = skip_whitespace(src);
if (!*src) {
+empty_command_in_pipe:
bb_error_msg("empty command in pipe");
free_job(job);
job->num_progs=0;
#ifdef CONFIG_LASH_JOB_CONTROL
case '&': /* background */
*inbg = 1;
+ /* fallthrough */
#endif
case ';': /* multiple commands */
- done = 1;
+ flag |= LASH_OPT_DONE;
return_command = *command_ptr + (src - *command_ptr) + 1;
break;
src++;
}
- if (*prog->argv[argc_l] || saw_quote) {
+ if (*prog->argv[argc_l] || flag & LASH_OPT_SAW_QUOTE) {
argc_l++;
}
if (!argc_l) {
prog->argv[argc_l] = NULL;
if (!return_command) {
- job->text = bb_xstrdup(*command_ptr);
+ job->text = xstrdup(*command_ptr);
} else {
/* This leaves any trailing spaces, which is a bit sloppy */
- job->text = bb_xstrndup(*command_ptr, return_command - *command_ptr);
+ job->text = xstrndup(*command_ptr, return_command - *command_ptr);
}
*command_ptr = return_command;
{
struct built_in_command *x;
- /* Check if the command sets an environment variable. */
- if( strchr(child->argv[0], '=') != NULL ) {
- child->argv[1] = child->argv[0];
- _exit(builtin_export(child));
- }
-
/* Check if the command matches any of the non-forking builtins.
* Depending on context, this might be redundant. But it's
* easier to waste a few CPU cycles than it is to figure out
/* Check if the command matches any of the forking builtins. */
for (x = bltins_forking; x->cmd; x++) {
if (strcmp(child->argv[0], x->cmd) == 0) {
- bb_applet_name=x->cmd;
+ applet_name=x->cmd;
_exit (x->function(child));
}
}
/* Do not use bb_perror_msg_and_die() here, since we must not
* call exit() but should call _exit() instead */
- fprintf(stderr, "%s: %m\n", child->argv[0]);
+ bb_perror_msg("%s", child->argv[0]);
_exit(EXIT_FAILURE);
}
* is doomed to failure, and doesn't work on bash, either.
*/
if (newjob->num_progs == 1) {
+ /* Check if the command sets an environment variable. */
+ if (strchr(child->argv[0], '=') != NULL) {
+ child->argv[1] = child->argv[0];
+ return builtin_export(child);
+ }
+
for (x = bltins; x->cmd; x++) {
if (strcmp(child->argv[0], x->cmd) == 0 ) {
int rcode;
signal(SIGTTOU, SIG_DFL);
signal(SIGCHLD, SIG_DFL);
- // Close all open filehandles.
+ /* Close all open filehandles. */
while(close_me_list) close((long)llist_pop(&close_me_list));
if (outpipe[1]!=-1) {
remove_job(&job_list, job_list.fg);
}
}
+#else
+void free_memory(void);
#endif
#ifdef CONFIG_LASH_JOB_CONTROL
/* Put ourselves in our own process group. */
setsid();
shell_pgrp = getpid ();
- setpgid (shell_pgrp, shell_pgrp);
+ setpgid(shell_pgrp, shell_pgrp);
/* Grab control of the terminal. */
tcsetpgrp(shell_terminal, shell_pgrp);
int lash_main(int argc_l, char **argv_l)
{
- int opt, interactive=FALSE;
+ unsigned opt;
FILE *input = stdin;
argc = argc_l;
argv = argv_l;
/* These variables need re-initializing when recursing */
last_jobid = 0;
- local_pending_command = NULL;
close_me_list = NULL;
job_list.head = NULL;
job_list.fg = NULL;
llist_add_to(&close_me_list, (void *)(long)fileno(prof_input));
/* Now run the file */
busy_loop(prof_input);
- fclose(prof_input);
+ fclose_if_not_stdin(prof_input);
llist_pop(&close_me_list);
}
}
- while ((opt = getopt(argc_l, argv_l, "cxi")) > 0) {
- switch (opt) {
- case 'c':
- input = NULL;
- if (local_pending_command != 0)
- bb_error_msg_and_die("multiple -c arguments");
- local_pending_command = bb_xstrdup(argv[optind]);
- optind++;
- argv = argv+optind;
- break;
- case 'i':
- interactive = TRUE;
- break;
- default:
- bb_show_usage();
- }
+ opt = getopt32(argc_l, argv_l, "+ic:", &local_pending_command);
+#define LASH_OPT_i (1<<0)
+#define LASH_OPT_c (1<<2)
+ if (opt & LASH_OPT_c) {
+ input = NULL;
+ optind++;
+ argv += optind;
}
/* A shell is interactive if the `-i' flag was given, or if all of
* the following conditions are met:
* standard output is a terminal
* Refer to Posix.2, the description of the `sh' utility. */
if (argv[optind]==NULL && input==stdin &&
- isatty(STDIN_FILENO) && isatty(STDOUT_FILENO)) {
- interactive=TRUE;
+ isatty(STDIN_FILENO) && isatty(STDOUT_FILENO))
+ {
+ opt |= LASH_OPT_i;
}
setup_job_control();
- if (interactive==TRUE) {
- //printf( "optind=%d argv[optind]='%s'\n", optind, argv[optind]);
+ if (opt & LASH_OPT_i) {
/* Looks like they want an interactive shell */
-#ifndef CONFIG_FEATURE_SH_EXTRA_QUIET
- printf( "\n\n%s Built-in shell (lash)\n", BB_BANNER);
- printf( "Enter 'help' for a list of built-in commands.\n\n");
-#endif
- } else if (local_pending_command==NULL) {
+ if (!ENABLE_FEATURE_SH_EXTRA_QUIET) {
+ printf("\n\n%s Built-in shell (lash)\n"
+ "Enter 'help' for a list of built-in commands.\n\n",
+ BB_BANNER);
+ }
+ } else if (!local_pending_command && argv[optind]) {
//printf( "optind=%d argv[optind]='%s'\n", optind, argv[optind]);
- input = bb_xfopen(argv[optind], "r");
+ input = xfopen(argv[optind], "r");
/* be lazy, never mark this closed */
llist_add_to(&close_me_list, (void *)(long)fileno(input));
}
if (!cwd)
cwd = bb_msg_unknown;
-#ifdef CONFIG_FEATURE_CLEAN_UP
- atexit(free_memory);
-#endif
+ if (ENABLE_FEATURE_CLEAN_UP) atexit(free_memory);
-#ifdef CONFIG_FEATURE_COMMAND_EDITING
- cmdedit_set_initial_prompt();
-#else
- PS1 = NULL;
-#endif
+ if (ENABLE_FEATURE_COMMAND_EDITING) cmdedit_set_initial_prompt();
+ else PS1 = NULL;
return (busy_loop(input));
}
projects / oweals / busybox.git / blobdiff