mirror of
https://github.com/topjohnwu/ndk-busybox.git
synced 2024-12-10 04:54:14 +00:00
xargs: shrink code, ~80 bytes
applets.h: +#undef APPLET_NOEXEC
This commit is contained in:
parent
53d445aa75
commit
1b4b2cb20e
@ -30,17 +30,17 @@
|
||||
|
||||
|
||||
#ifdef TEST
|
||||
# ifndef CONFIG_FEATURE_XARGS_SUPPORT_CONFIRMATION
|
||||
# define CONFIG_FEATURE_XARGS_SUPPORT_CONFIRMATION
|
||||
# ifndef ENABLE_FEATURE_XARGS_SUPPORT_CONFIRMATION
|
||||
# define ENABLE_FEATURE_XARGS_SUPPORT_CONFIRMATION 1
|
||||
# endif
|
||||
# ifndef CONFIG_FEATURE_XARGS_SUPPORT_QUOTES
|
||||
# define CONFIG_FEATURE_XARGS_SUPPORT_QUOTES
|
||||
# ifndef ENABLE_FEATURE_XARGS_SUPPORT_QUOTES
|
||||
# define ENABLE_FEATURE_XARGS_SUPPORT_QUOTES 1
|
||||
# endif
|
||||
# ifndef CONFIG_FEATURE_XARGS_SUPPORT_TERMOPT
|
||||
# define CONFIG_FEATURE_XARGS_SUPPORT_TERMOPT
|
||||
# ifndef ENABLE_FEATURE_XARGS_SUPPORT_TERMOPT
|
||||
# define ENABLE_FEATURE_XARGS_SUPPORT_TERMOPT 1
|
||||
# endif
|
||||
# ifndef CONFIG_FEATURE_XARGS_SUPPORT_ZERO_TERM
|
||||
# define CONFIG_FEATURE_XARGS_SUPPORT_ZERO_TERM
|
||||
# ifndef ENABLE_FEATURE_XARGS_SUPPORT_ZERO_TERM
|
||||
# define ENABLE_FEATURE_XARGS_SUPPORT_ZERO_TERM 1
|
||||
# endif
|
||||
#endif
|
||||
|
||||
@ -94,20 +94,20 @@ static int xargs_exec(char *const *args)
|
||||
}
|
||||
|
||||
|
||||
typedef struct xlist_s {
|
||||
typedef struct xlist_t {
|
||||
char *data;
|
||||
size_t lenght;
|
||||
struct xlist_s *link;
|
||||
size_t length;
|
||||
struct xlist_t *link;
|
||||
} xlist_t;
|
||||
|
||||
static int eof_stdin_detected;
|
||||
static smallint eof_stdin_detected;
|
||||
|
||||
#define ISBLANK(c) ((c) == ' ' || (c) == '\t')
|
||||
#define ISSPACE(c) (ISBLANK(c) || (c) == '\n' || (c) == '\r' \
|
||||
|| (c) == '\f' || (c) == '\v')
|
||||
|
||||
#ifdef CONFIG_FEATURE_XARGS_SUPPORT_QUOTES
|
||||
static xlist_t *process_stdin(xlist_t * list_arg,
|
||||
#if ENABLE_FEATURE_XARGS_SUPPORT_QUOTES
|
||||
static xlist_t *process_stdin(xlist_t *list_arg,
|
||||
const char *eof_str, size_t mc, char *buf)
|
||||
{
|
||||
#define NORM 0
|
||||
@ -125,16 +125,18 @@ static xlist_t *process_stdin(xlist_t * list_arg,
|
||||
xlist_t *cur;
|
||||
xlist_t *prev;
|
||||
|
||||
for (prev = cur = list_arg; cur; cur = cur->link) {
|
||||
line_l += cur->lenght; /* previous allocated */
|
||||
if (prev != cur)
|
||||
prev = prev->link;
|
||||
cur = list_arg;
|
||||
while (1) {
|
||||
prev = cur;
|
||||
if (!cur) break;
|
||||
line_l += cur->length;
|
||||
cur = cur->link;
|
||||
}
|
||||
|
||||
while (!eof_stdin_detected) {
|
||||
c = getchar();
|
||||
if (c == EOF) {
|
||||
eof_stdin_detected++;
|
||||
eof_stdin_detected = 1;
|
||||
if (s)
|
||||
goto unexpected_eof;
|
||||
break;
|
||||
@ -183,22 +185,22 @@ set:
|
||||
}
|
||||
/* word loaded */
|
||||
if (eof_str) {
|
||||
eof_str_detected = strcmp(s, eof_str) == 0;
|
||||
eof_str_detected = (strcmp(s, eof_str) == 0);
|
||||
}
|
||||
if (!eof_str_detected) {
|
||||
size_t lenght = (p - buf);
|
||||
size_t length = (p - buf);
|
||||
|
||||
cur = xmalloc(sizeof(xlist_t) + lenght);
|
||||
cur->data = memcpy(cur + 1, s, lenght);
|
||||
cur->lenght = lenght;
|
||||
cur->link = NULL;
|
||||
cur = xzalloc(sizeof(xlist_t) + length);
|
||||
cur->data = memcpy(cur + 1, s, length);
|
||||
cur->length = length;
|
||||
/*cur->link = NULL;*/
|
||||
if (prev == NULL) {
|
||||
list_arg = cur;
|
||||
} else {
|
||||
prev->link = cur;
|
||||
}
|
||||
prev = cur;
|
||||
line_l += lenght;
|
||||
line_l += length;
|
||||
if (line_l > mc) {
|
||||
/* stop memory usage :-) */
|
||||
break;
|
||||
@ -212,28 +214,30 @@ set:
|
||||
}
|
||||
#else
|
||||
/* The variant does not support single quotes, double quotes or backslash */
|
||||
static xlist_t *process_stdin(xlist_t * list_arg,
|
||||
static xlist_t *process_stdin(xlist_t *list_arg,
|
||||
const char *eof_str, size_t mc, char *buf)
|
||||
{
|
||||
|
||||
int c; /* current char */
|
||||
int eof_str_detected = 0;
|
||||
char eof_str_detected = 0;
|
||||
char *s = NULL; /* start word */
|
||||
char *p = NULL; /* pointer to end word */
|
||||
size_t line_l = 0; /* size loaded args line */
|
||||
xlist_t *cur;
|
||||
xlist_t *prev;
|
||||
|
||||
for (prev = cur = list_arg; cur; cur = cur->link) {
|
||||
line_l += cur->lenght; /* previous allocated */
|
||||
if (prev != cur)
|
||||
prev = prev->link;
|
||||
cur = list_arg;
|
||||
while (1) {
|
||||
prev = cur;
|
||||
if (!cur) break;
|
||||
line_l += cur->length;
|
||||
cur = cur->link;
|
||||
}
|
||||
|
||||
while (!eof_stdin_detected) {
|
||||
c = getchar();
|
||||
if (c == EOF) {
|
||||
eof_stdin_detected++;
|
||||
eof_stdin_detected = 1;
|
||||
}
|
||||
if (eof_str_detected)
|
||||
continue;
|
||||
@ -250,22 +254,22 @@ static xlist_t *process_stdin(xlist_t * list_arg,
|
||||
if (c == EOF) { /* word's delimiter or EOF detected */
|
||||
/* word loaded */
|
||||
if (eof_str) {
|
||||
eof_str_detected = strcmp(s, eof_str) == 0;
|
||||
eof_str_detected = (strcmp(s, eof_str) == 0);
|
||||
}
|
||||
if (!eof_str_detected) {
|
||||
size_t lenght = (p - buf);
|
||||
size_t length = (p - buf);
|
||||
|
||||
cur = xmalloc(sizeof(xlist_t) + lenght);
|
||||
cur->data = memcpy(cur + 1, s, lenght);
|
||||
cur->lenght = lenght;
|
||||
cur->link = NULL;
|
||||
cur = xzalloc(sizeof(xlist_t) + length);
|
||||
cur->data = memcpy(cur + 1, s, length);
|
||||
cur->length = length;
|
||||
/*cur->link = NULL;*/
|
||||
if (prev == NULL) {
|
||||
list_arg = cur;
|
||||
} else {
|
||||
prev->link = cur;
|
||||
}
|
||||
prev = cur;
|
||||
line_l += lenght;
|
||||
line_l += length;
|
||||
if (line_l > mc) {
|
||||
/* stop memory usage :-) */
|
||||
break;
|
||||
@ -276,39 +280,34 @@ static xlist_t *process_stdin(xlist_t * list_arg,
|
||||
}
|
||||
return list_arg;
|
||||
}
|
||||
#endif /* CONFIG_FEATURE_XARGS_SUPPORT_QUOTES */
|
||||
#endif /* FEATURE_XARGS_SUPPORT_QUOTES */
|
||||
|
||||
|
||||
#ifdef CONFIG_FEATURE_XARGS_SUPPORT_CONFIRMATION
|
||||
#if ENABLE_FEATURE_XARGS_SUPPORT_CONFIRMATION
|
||||
/* Prompt the user for a response, and
|
||||
if the user responds affirmatively, return true;
|
||||
otherwise, return false. Used "/dev/tty", not stdin. */
|
||||
otherwise, return false. Uses "/dev/tty", not stdin. */
|
||||
static int xargs_ask_confirmation(void)
|
||||
{
|
||||
static FILE *tty_stream;
|
||||
FILE *tty_stream;
|
||||
int c, savec;
|
||||
|
||||
if (!tty_stream) {
|
||||
tty_stream = xfopen(CURRENT_TTY, "r");
|
||||
/* pranoidal security by vodz */
|
||||
fcntl(fileno(tty_stream), F_SETFD, FD_CLOEXEC);
|
||||
}
|
||||
fputs(" ?...", stderr);
|
||||
fflush(stderr);
|
||||
c = savec = getc(tty_stream);
|
||||
while (c != EOF && c != '\n')
|
||||
c = getc(tty_stream);
|
||||
if (savec == 'y' || savec == 'Y')
|
||||
return 1;
|
||||
return 0;
|
||||
fclose(tty_stream);
|
||||
return (savec == 'y' || savec == 'Y');
|
||||
}
|
||||
#else
|
||||
# define xargs_ask_confirmation() 1
|
||||
#endif /* CONFIG_FEATURE_XARGS_SUPPORT_CONFIRMATION */
|
||||
#endif /* FEATURE_XARGS_SUPPORT_CONFIRMATION */
|
||||
|
||||
#ifdef CONFIG_FEATURE_XARGS_SUPPORT_ZERO_TERM
|
||||
static xlist_t *process0_stdin(xlist_t * list_arg, const char *eof_str ATTRIBUTE_UNUSED,
|
||||
size_t mc, char *buf)
|
||||
#if ENABLE_FEATURE_XARGS_SUPPORT_ZERO_TERM
|
||||
static xlist_t *process0_stdin(xlist_t *list_arg,
|
||||
const char *eof_str ATTRIBUTE_UNUSED, size_t mc, char *buf)
|
||||
{
|
||||
int c; /* current char */
|
||||
char *s = NULL; /* start word */
|
||||
@ -317,16 +316,18 @@ static xlist_t *process0_stdin(xlist_t * list_arg, const char *eof_str ATTRIBUTE
|
||||
xlist_t *cur;
|
||||
xlist_t *prev;
|
||||
|
||||
for (prev = cur = list_arg; cur; cur = cur->link) {
|
||||
line_l += cur->lenght; /* previous allocated */
|
||||
if (prev != cur)
|
||||
prev = prev->link;
|
||||
cur = list_arg;
|
||||
while (1) {
|
||||
prev = cur;
|
||||
if (!cur) break;
|
||||
line_l += cur->length;
|
||||
cur = cur->link;
|
||||
}
|
||||
|
||||
while (!eof_stdin_detected) {
|
||||
c = getchar();
|
||||
if (c == EOF) {
|
||||
eof_stdin_detected++;
|
||||
eof_stdin_detected = 1;
|
||||
if (s == NULL)
|
||||
break;
|
||||
c = 0;
|
||||
@ -338,19 +339,19 @@ static xlist_t *process0_stdin(xlist_t * list_arg, const char *eof_str ATTRIBUTE
|
||||
*p++ = c;
|
||||
if (c == 0) { /* word's delimiter or EOF detected */
|
||||
/* word loaded */
|
||||
size_t lenght = (p - buf);
|
||||
size_t length = (p - buf);
|
||||
|
||||
cur = xmalloc(sizeof(xlist_t) + lenght);
|
||||
cur->data = memcpy(cur + 1, s, lenght);
|
||||
cur->lenght = lenght;
|
||||
cur->link = NULL;
|
||||
cur = xzalloc(sizeof(xlist_t) + length);
|
||||
cur->data = memcpy(cur + 1, s, length);
|
||||
cur->length = length;
|
||||
/*cur->link = NULL;*/
|
||||
if (prev == NULL) {
|
||||
list_arg = cur;
|
||||
} else {
|
||||
prev->link = cur;
|
||||
}
|
||||
prev = cur;
|
||||
line_l += lenght;
|
||||
line_l += length;
|
||||
if (line_l > mc) {
|
||||
/* stop memory usage :-) */
|
||||
break;
|
||||
@ -360,7 +361,7 @@ static xlist_t *process0_stdin(xlist_t * list_arg, const char *eof_str ATTRIBUTE
|
||||
}
|
||||
return list_arg;
|
||||
}
|
||||
#endif /* CONFIG_FEATURE_XARGS_SUPPORT_ZERO_TERM */
|
||||
#endif /* FEATURE_XARGS_SUPPORT_ZERO_TERM */
|
||||
|
||||
/* Correct regardless of combination of CONFIG_xxx */
|
||||
enum {
|
||||
@ -413,8 +414,8 @@ int xargs_main(int argc, char **argv)
|
||||
if (opt & OPT_ZEROTERM)
|
||||
USE_FEATURE_XARGS_SUPPORT_ZERO_TERM(read_args = process0_stdin);
|
||||
|
||||
argc -= optind;
|
||||
argv += optind;
|
||||
argc -= optind;
|
||||
if (!argc) {
|
||||
/* default behavior is to echo all the filenames */
|
||||
*argv = (char*)"echo";
|
||||
@ -458,9 +459,9 @@ int xargs_main(int argc, char **argv)
|
||||
opt |= OPT_NO_EMPTY;
|
||||
n = 0;
|
||||
n_chars = 0;
|
||||
#ifdef CONFIG_FEATURE_XARGS_SUPPORT_TERMOPT
|
||||
#if ENABLE_FEATURE_XARGS_SUPPORT_TERMOPT
|
||||
for (cur = list; cur;) {
|
||||
n_chars += cur->lenght;
|
||||
n_chars += cur->length;
|
||||
n++;
|
||||
cur = cur->link;
|
||||
if (n_chars > n_max_chars || (n == n_max_arg && cur)) {
|
||||
@ -471,13 +472,13 @@ int xargs_main(int argc, char **argv)
|
||||
}
|
||||
#else
|
||||
for (cur = list; cur; cur = cur->link) {
|
||||
n_chars += cur->lenght;
|
||||
n_chars += cur->length;
|
||||
n++;
|
||||
if (n_chars > n_max_chars || n == n_max_arg) {
|
||||
break;
|
||||
}
|
||||
}
|
||||
#endif /* CONFIG_FEATURE_XARGS_SUPPORT_TERMOPT */
|
||||
#endif /* FEATURE_XARGS_SUPPORT_TERMOPT */
|
||||
|
||||
/* allocate pointers for execvp:
|
||||
argc*arg, n*arg from stdin, NULL */
|
||||
@ -517,7 +518,8 @@ int xargs_main(int argc, char **argv)
|
||||
break;
|
||||
}
|
||||
}
|
||||
if (ENABLE_FEATURE_CLEAN_UP) free(max_chars);
|
||||
if (ENABLE_FEATURE_CLEAN_UP)
|
||||
free(max_chars);
|
||||
return child_error;
|
||||
}
|
||||
|
||||
|
@ -14,8 +14,8 @@
|
||||
/*
|
||||
name - applet name as it is typed on command line
|
||||
name2 - applet name, converted to C (ether-wake: name2 = ether_wake)
|
||||
main - <applet>_main part (e.g. for bzcat: main = bunzip2)
|
||||
l - location ([/usr]/[s]bin)
|
||||
main - corresponding <applet>_main to call (bzcat: main = bunzip2)
|
||||
l - location to install link to: [/usr]/[s]bin
|
||||
s - suid type:
|
||||
_BB_SUID_ALWAYS: will complain if busybox isn't suid
|
||||
and is run by non-root (applet_main() will not be called at all)
|
||||
@ -363,3 +363,4 @@ USE_ZCIP(APPLET(zcip, _BB_DIR_SBIN, _BB_SUID_NEVER))
|
||||
#undef APPLET_NOUSAGE
|
||||
#undef APPLET_ODDNAME
|
||||
#undef APPLET_NOEXEC
|
||||
#undef APPLET_NOFORK
|
||||
|
Loading…
Reference in New Issue
Block a user