svn commit: trunk/busybox/shell
vda at busybox.net
vda at busybox.net
Fri Apr 13 19:55:50 UTC 2007
Author: vda
Date: 2007-04-13 12:55:50 -0700 (Fri, 13 Apr 2007)
New Revision: 18429
Log:
hush: comment out and replace bug in set_local_var:
- if (value == 0 && ++value == 0) {
+ /*if (value == 0 && ++value == 0) ??? -vda */
+ if (value == NULL || value[1] == '\0') {
Style fixes.
Modified:
trunk/busybox/shell/hush.c
Changeset:
Modified: trunk/busybox/shell/hush.c
===================================================================
--- trunk/busybox/shell/hush.c 2007-04-13 19:44:22 UTC (rev 18428)
+++ trunk/busybox/shell/hush.c 2007-04-13 19:55:50 UTC (rev 18429)
@@ -629,7 +629,6 @@
return EXIT_SUCCESS;
}
-
/* built-in 'pwd' handler */
static int builtin_pwd(struct child_prog *dummy ATTRIBUTE_UNUSED)
{
@@ -693,9 +692,8 @@
global_argc -= n;
global_argv += n;
return EXIT_SUCCESS;
- } else {
- return EXIT_FAILURE;
}
+ return EXIT_FAILURE;
}
/* Built-in '.' handler (read-in and execute commands from file) */
@@ -950,13 +948,12 @@
{
if (i->p && *i->p) {
return *i->p;
- } else {
- i->peek_buf[0] = fgetc(i->file);
- i->peek_buf[1] = '\0';
- i->p = i->peek_buf;
- debug_printf("b_peek: got a %d\n", *i->p);
- return *i->p;
}
+ i->peek_buf[0] = fgetc(i->file);
+ i->peek_buf[1] = '\0';
+ i->p = i->peek_buf;
+ debug_printf("b_peek: got a %d\n", *i->p);
+ return *i->p;
}
static void setup_file_in_str(struct in_str *i, FILE *f)
@@ -1019,7 +1016,7 @@
}
if (redir->dup == -1) {
mode = redir_table[redir->type].mode;
- openfd = open3_or_warn(redir->word.gl_pathv[0], mode, 0666);
+ openfd = open_or_warn(redir->word.gl_pathv[0], mode);
if (openfd < 0) {
/* this could get lost if stderr has been redirected, but
bash and ash both lose it as well (though zsh doesn't!) */
@@ -1038,7 +1035,7 @@
} else {
dup2(openfd, redir->fd);
if (redir->dup == -1)
- close (openfd);
+ close(openfd);
}
}
}
@@ -1128,18 +1125,20 @@
execvp(child->argv[0], child->argv);
bb_perror_msg("cannot exec: %s", child->argv[0]);
_exit(1);
- } else if (child->group) {
+ }
+
+ if (child->group) {
debug_printf("runtime nesting to group\n");
interactive = 0; /* crucial!!!! */
rcode = run_list_real(child->group);
/* OK to leak memory by not calling free_pipe_list,
* since this process is about to exit */
_exit(rcode);
- } else {
- /* Can happen. See what bash does with ">foo" by itself. */
- debug_printf("trying to pseudo_exec null command\n");
- _exit(EXIT_SUCCESS);
}
+
+ /* Can happen. See what bash does with ">foo" by itself. */
+ debug_printf("trying to pseudo_exec null command\n");
+ _exit(EXIT_SUCCESS);
}
static void insert_bg_job(struct pipe *pi)
@@ -1157,7 +1156,7 @@
thejob = job_list = xmalloc(sizeof(*thejob));
} else {
for (thejob = job_list; thejob->next; thejob = thejob->next)
- /* nothing */;
+ continue;
thejob->next = xmalloc(sizeof(*thejob));
thejob = thejob->next;
}
@@ -1320,9 +1319,11 @@
rcode = run_list_real(child->group);
restore_redirects(squirrel);
return rcode;
- } else if (pi->num_progs == 1 && pi->progs[0].argv != NULL) {
+ }
+
+ if (pi->num_progs == 1 && pi->progs[0].argv != NULL) {
for (i = 0; is_assignment(child->argv[i]); i++)
- /* nothing */;
+ continue;
if (i != 0 && child->argv[i] == NULL) {
/* assignments, but no command: set the local environment */
for (i = 0; child->argv[i] != NULL; i++) {
@@ -1359,7 +1360,7 @@
}
}
if (child->sp) {
- char *str = NULL;
+ char *str;
str = make_string((child->argv + i));
parse_string_outer(str, FLAG_EXIT_FROM_LOOP | FLAG_REPARSING);
@@ -1372,7 +1373,7 @@
int rcode;
if (x->function == builtin_exec && child->argv[i+1] == NULL) {
debug_printf("magic exec\n");
- setup_redirects(child,NULL);
+ setup_redirects(child, NULL);
return EXIT_SUCCESS;
}
debug_printf("builtin inline %s\n", child->argv[0]);
@@ -1404,7 +1405,7 @@
}
/* XXX test for failed fork()? */
-#if !defined(__UCLIBC__) || defined(__ARCH_HAS_MMU__)
+#if BB_MMU
child->pid = fork();
#else
child->pid = vfork();
@@ -1435,7 +1436,7 @@
/* Like bash, explicit redirects override pipes,
* and the pipe fd is available for dup'ing. */
- setup_redirects(child,NULL);
+ setup_redirects(child, NULL);
if (interactive && pi->followup != PIPE_BG) {
/* If we (the child) win the race, put ourselves in the process
@@ -1803,11 +1804,12 @@
* NAME=VALUE format. So the first order of business is to
* split 's' on the '=' into 'name' and 'value' */
value = strchr(name, '=');
- if (value == 0 && ++value == 0) {
+ /*if (value == 0 && ++value == 0) ??? -vda */
+ if (value == NULL || value[1] == '\0') {
free(name);
return -1;
}
- *value++ = 0;
+ *value++ = '\0';
for (cur = top_vars; cur; cur = cur->next) {
if (strcmp(cur->name, name) == 0)
@@ -1820,17 +1822,15 @@
cur->flg_export = flg_export;
else
result++;
+ } else if (cur->flg_read_only) {
+ bb_error_msg("%s: readonly variable", name);
+ result = -1;
} else {
- if (cur->flg_read_only) {
- bb_error_msg("%s: readonly variable", name);
- result = -1;
- } else {
- if (flg_export > 0 || cur->flg_export > 1)
- cur->flg_export = 1;
- free((char*)cur->value);
+ if (flg_export > 0 || cur->flg_export > 1)
+ cur->flg_export = 1;
+ free((char*)cur->value);
- cur->value = strdup(value);
- }
+ cur->value = strdup(value);
}
} else {
cur = malloc(sizeof(struct variables));
@@ -2213,7 +2213,7 @@
FILE *pf;
int pid, channel[2];
if (pipe(channel) < 0) bb_perror_msg_and_die("pipe");
-#if !defined(__UCLIBC__) || defined(__ARCH_HAS_MMU__)
+#if BB_MMU
pid = fork();
#else
pid = vfork();
@@ -2576,14 +2576,15 @@
* one before the EOF. Can't use the standard "syntax error" return code,
* so that parse_stream_outer can distinguish the EOF and exit smoothly. */
debug_printf("leaving parse_stream (EOF)\n");
- if (end_trigger != '\0') return -1;
+ if (end_trigger != '\0')
+ return -1;
return 0;
}
static void mapset(const char *set, int code)
{
- const unsigned char *s;
- for (s = (const unsigned char *)set; *s; s++) map[(int)*s] = code;
+ while (*s)
+ map[(unsigned char)*s++] = code;
}
static void update_ifs_map(void)
@@ -2607,7 +2608,6 @@
* from builtin_source() */
int parse_stream_outer(struct in_str *inp, int flag)
{
-
struct p_context ctx;
o_string temp = NULL_O_STRING;
int rcode;
@@ -2729,7 +2729,8 @@
if (argv[0] && argv[0][0] == '-') {
debug_printf("\nsourcing /etc/profile\n");
- if ((input = fopen("/etc/profile", "r")) != NULL) {
+ input = fopen("/etc/profile", "r");
+ if (input != NULL) {
mark_open(fileno(input));
parse_file_outer(input);
mark_closed(fileno(input));
@@ -2816,7 +2817,7 @@
}
#endif
-final_return:
+ final_return:
return opt ? opt : last_return_code;
}
@@ -2877,7 +2878,8 @@
p1++;
continue;
}
- if ((p2 = strchr(p1, ' '))) {
+ p2 = strchr(p1, ' ');
+ if (p2) {
len = p2 - p1;
} else {
len = strlen(p1);
@@ -2920,7 +2922,7 @@
if (p != inp[n]) free(p);
}
len = strlen(str);
- *(str + len) = '\n';
- *(str + len + 1) = '\0';
+ str[len] = '\n';
+ str[len+1] = '\0';
return str;
}
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