brctl: eliminate stray data object

brctl: use constant fd to reduce parameter passing
runsvdir: do not use data/bss
od: reuse bb_argv_dash
last: do not go into endless loop on read error
mount: make it not fail scripts/find_bad_common_bufsiz check
dc: add INIT_G() (no-op for dc, but we want uniform usage of "G trick")

function                                             old     new   delta
runsvdir_main                                       1646    1672     +26
set_pgrp                                               1       -      -1
exitsoon                                               1       -      -1
check                                                679     678      -1
svnum                                                  4       -      -4
svdir                                                  4       -      -4
sv                                                     4       -      -4
stamplog                                               4       -      -4
rploglen                                               4       -      -4
rplog                                                  4       -      -4
mount_main                                           995     988      -7
static.default_file_list                               8       -      -8
pfd                                                    8       -      -8
logpipe                                                8       -      -8
static.info                                           20       -     -20
brctl_main                                           767     739     -28
------------------------------------------------------------------------------
(add/remove: 0/12 grow/shrink: 1/3 up/down: 26/-106)          Total: -80 bytes
   text    data     bss     dec     hex filename
 793327     662    7412  801401   c3a79 busybox_old
 793329     641    7372  801342   c3a3e busybox_unstripped
This commit is contained in:
Denis Vlasenko 2008-03-17 09:33:45 +00:00
parent b44c790e41
commit d0a071a528
6 changed files with 85 additions and 58 deletions

View File

@ -1177,7 +1177,6 @@ dump_strings(off_t address, off_t end_offset)
int od_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int od_main(int argc, char **argv)
{
static char const *const default_file_list[] = { "-", NULL };
static const struct suffix_mult bkm[] = {
{ "b", 512 },
{ "k", 1024 },
@ -1383,7 +1382,7 @@ int od_main(int argc, char **argv)
/* If no files were listed on the command line,
set the global pointer FILE_LIST so that it
references the null-terminated list of one name: "-". */
file_list = default_file_list;
file_list = bb_argv_dash;
if (argc > 0) {
/* Set the global pointer FILE_LIST so that it
references the first file-argument on the command-line. */

View File

@ -19,6 +19,8 @@ enum { STACK_SIZE = (COMMON_BUFSIZE - offsetof(struct globals, stack)) / sizeof(
#define pointer (G.pointer )
#define base (G.base )
#define stack (G.stack )
#define INIT_G() do { \
} while (0)
static void push(double a)
@ -194,6 +196,8 @@ static char *get_token(char **buffer)
int dc_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int dc_main(int argc ATTRIBUTE_UNUSED, char **argv)
{
INIT_G();
argv++;
if (!argv[0]) {
/* take stuff from stdin if no args are given */

View File

@ -39,9 +39,8 @@ int last_main(int argc, char **argv ATTRIBUTE_UNUSED)
file = xopen(bb_path_wtmp_file, O_RDONLY);
printf("%-10s %-14s %-18s %-12.12s %s\n", "USER", "TTY", "HOST", "LOGIN", "TIME");
while ((n = safe_read(file, (void*)&ut, sizeof(struct utmp))) != 0) {
if (n != sizeof(struct utmp)) {
while ((n = full_read(file, &ut, sizeof(ut))) > 0) {
if (n != sizeof(ut)) {
bb_perror_msg_and_die("short read");
}
@ -53,16 +52,14 @@ int last_main(int argc, char **argv ATTRIBUTE_UNUSED)
else if (strncmp(ut.ut_user, "runlevel", 7) == 0)
ut.ut_type = RUN_LVL;
} else {
if (!ut.ut_name[0] || strcmp(ut.ut_name, "LOGIN") == 0 ||
ut.ut_name[0] == 0)
{
if (ut.ut_name[0] == '\0' || strcmp(ut.ut_name, "LOGIN") == 0) {
/* Don't bother. This means we can't find how long
* someone was logged in for. Oh well. */
continue;
}
if (ut.ut_type != DEAD_PROCESS &&
ut.ut_name[0] && ut.ut_line[0])
{
if (ut.ut_type != DEAD_PROCESS
&& ut.ut_name[0] && ut.ut_line[0]
) {
ut.ut_type = USER_PROCESS;
}
if (strcmp(ut.ut_name, "date") == 0) {

View File

@ -33,13 +33,15 @@
#if ENABLE_FEATURE_BRCTL_FANCY
#include <linux/if_bridge.h>
/* FIXME: These 4 funcs are not really clean and could be improved */
static inline ALWAYS_INLINE void strtotimeval(struct timeval *tv,
static ALWAYS_INLINE void strtotimeval(struct timeval *tv,
const char *time_str)
{
double secs;
#if BRCTL_USE_INTERNAL
if (!(secs = /*bb_*/strtod(time_str, NULL)))
secs = /*bb_*/strtod(time_str, NULL);
if (!secs)
#else
if (sscanf(time_str, "%lf", &secs) != 1)
#endif
@ -48,7 +50,7 @@ static inline ALWAYS_INLINE void strtotimeval(struct timeval *tv,
tv->tv_usec = 1000000 * (secs - tv->tv_sec);
}
static inline ALWAYS_INLINE unsigned long __tv_to_jiffies(const struct timeval *tv)
static ALWAYS_INLINE unsigned long __tv_to_jiffies(const struct timeval *tv)
{
unsigned long long jif;
@ -56,7 +58,7 @@ static inline ALWAYS_INLINE unsigned long __tv_to_jiffies(const struct timeval *
return jif/10000;
}
# if 00
# if 0
static void __jiffies_to_tv(struct timeval *tv, unsigned long jiffies)
{
unsigned long long tvusec;
@ -84,10 +86,9 @@ static void arm_ioctl(unsigned long *args,
#endif
int brctl_main(int argc ATTRIBUTE_UNUSED, char **argv) MAIN_EXTERNALLY_VISIBLE;
int brctl_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int brctl_main(int argc ATTRIBUTE_UNUSED, char **argv)
{
int fd;
static const char keywords[] ALIGN1 =
"addbr\0" "delbr\0" "addif\0" "delif\0"
USE_FEATURE_BRCTL_FANCY(
@ -96,16 +97,19 @@ int brctl_main(int argc ATTRIBUTE_UNUSED, char **argv)
"setpathcost\0" "setportprio\0" "setbridgeprio\0"
)
USE_FEATURE_BRCTL_SHOW("showmacs\0" "show\0");
enum { ARG_addbr = 0, ARG_delbr, ARG_addif, ARG_delif
USE_FEATURE_BRCTL_FANCY(,
ARG_stp,
ARG_setageing, ARG_setfd, ARG_sethello, ARG_setmaxage,
ARG_setpathcost, ARG_setportprio, ARG_setbridgeprio
)
USE_FEATURE_BRCTL_SHOW(, ARG_showmacs, ARG_show) };
USE_FEATURE_BRCTL_SHOW(, ARG_showmacs, ARG_show)
};
int fd;
smallint key;
struct ifreq ifr;
static char info[] = "bridge %s\0 iface %s";
char *br, *brif;
#if ENABLE_FEATURE_BRCTL_FANCY
unsigned long args[4] = {0, 0, 0, 0};
@ -125,25 +129,26 @@ int brctl_main(int argc ATTRIBUTE_UNUSED, char **argv)
}
#endif
fd = xsocket(AF_INET, SOCK_STREAM, 0);
br = *(argv++);
br = *argv++;
if (key == ARG_addbr || key == ARG_delbr) { /* addbr or delbr */
ioctl_or_perror_and_die(fd,
key == ARG_addbr ? SIOCBRADDBR : SIOCBRDELBR,
br, info, br);
br, "bridge %s", br);
goto done;
}
if (!*argv) /* all but 'show' need at least one argument */
bb_show_usage();
safe_strncpy(ifr.ifr_name, br, IFNAMSIZ);
if (key == ARG_addif || key == ARG_delif) { /* addif or delif */
brif = *(argv++);
if (!(ifr.ifr_ifindex = if_nametoindex(brif))) {
bb_perror_msg_and_die(info+11, brif);
brif = *argv++;
ifr.ifr_ifindex = if_nametoindex(brif);
if (!ifr.ifr_ifindex) {
bb_perror_msg_and_die("iface %s", brif);
}
ioctl_or_perror_and_die(fd,
key == ARG_addif ? SIOCBRADDIF : SIOCBRDELIF,
&ifr, info, br);
&ifr, "bridge %s", br);
goto done;
}
#if ENABLE_FEATURE_BRCTL_FANCY
@ -158,8 +163,7 @@ int brctl_main(int argc ATTRIBUTE_UNUSED, char **argv)
unsigned long op = (key == ARG_setageing) ? BRCTL_SET_AGEING_TIME :
(key == ARG_setfd) ? BRCTL_SET_BRIDGE_FORWARD_DELAY :
(key == ARG_sethello) ? BRCTL_SET_BRIDGE_HELLO_TIME :
(key == ARG_setmaxage) ? BRCTL_SET_BRIDGE_MAX_AGE :
-1/* will never be used */;
/*key == ARG_setmaxage*/ BRCTL_SET_BRIDGE_MAX_AGE;
arm_ioctl(args, op, str_to_jiffies(*argv), 0);
goto fire;
}
@ -168,25 +172,28 @@ int brctl_main(int argc ATTRIBUTE_UNUSED, char **argv)
int ifidx[MAX_PORTS];
unsigned i;
if (!(port = if_nametoindex(*argv)))
port = if_nametoindex(*argv);
if (!port)
bb_error_msg_and_die(bb_msg_invalid_arg, *argv, "port");
argv++;
memset(ifidx, 0, sizeof ifidx);
arm_ioctl(args, BRCTL_GET_PORT_LIST, (unsigned long)ifidx,
MAX_PORTS);
xioctl(fd, SIOCDEVPRIVATE, &ifr);
for (i = 0; i < MAX_PORTS; i++)
for (i = 0; i < MAX_PORTS; i++) {
if (ifidx[i] == port) {
port = i;
break;
}
}
}
if (key == ARG_setpathcost
|| key == ARG_setportprio || key == ARG_setbridgeprio) {
|| key == ARG_setportprio
|| key == ARG_setbridgeprio
) {
unsigned long op = (key == ARG_setpathcost) ? BRCTL_SET_PATH_COST :
(key == ARG_setportprio) ? BRCTL_SET_PORT_PRIORITY :
(key == ARG_setbridgeprio) ? BRCTL_SET_BRIDGE_PRIORITY :
-1/* will never be used */;
/*key == ARG_setbridgeprio*/ BRCTL_SET_BRIDGE_PRIORITY;
unsigned long arg1 = port;
unsigned long arg2;
# if BRCTL_USE_INTERNAL

View File

@ -42,17 +42,34 @@ struct service {
smallint isgone;
};
static struct service *sv;
static char *svdir;
static int svnum;
static char *rplog;
static int rploglen;
static struct fd_pair logpipe;
static struct pollfd pfd[1];
static unsigned stamplog;
static smallint check = 1;
static smallint exitsoon;
static smallint set_pgrp;
struct globals {
struct service *sv;
char *svdir;
char *rplog;
int svnum;
int rploglen;
struct fd_pair logpipe;
struct pollfd pfd[1];
unsigned stamplog;
smallint check; /* = 1; */
smallint exitsoon;
smallint set_pgrp;
};
#define G (*(struct globals*)&bb_common_bufsiz1)
#define sv (G.sv )
#define svdir (G.svdir )
#define rplog (G.rplog )
#define svnum (G.svnum )
#define rploglen (G.rploglen )
#define logpipe (G.logpipe )
#define pfd (G.pfd )
#define stamplog (G.stamplog )
#define check (G.check )
#define exitsoon (G.exitsoon )
#define set_pgrp (G.set_pgrp )
#define INIT_G() do { \
check = 1; \
} while (0)
static void fatal2_cannot(const char *m1, const char *m2)
{
@ -222,6 +239,8 @@ int runsvdir_main(int argc ATTRIBUTE_UNUSED, char **argv)
char ch;
int i;
INIT_G();
argv++;
if (!*argv)
bb_show_usage();

View File

@ -214,9 +214,10 @@ struct globals {
unsigned verbose;
#endif
llist_t *fslist;
char getmntent_buf[sizeof(bb_common_bufsiz1) - 8*3];
char getmntent_buf[1];
};
enum { GETMNTENT_BUFSIZE = COMMON_BUFSIZE - offsetof(struct globals, getmntent_buf) };
#define G (*(struct globals*)&bb_common_bufsiz1)
#define nfs_mount_version (G.nfs_mount_version)
#if ENABLE_FEATURE_MOUNT_VERBOSE
@ -1775,7 +1776,7 @@ int mount_main(int argc, char **argv)
if (!mountTable) bb_error_msg_and_die("no %s", bb_path_mtab_file);
while (getmntent_r(mountTable, &mtpair[0], getmntent_buf,
sizeof(getmntent_buf)))
GETMNTENT_BUFSIZE))
{
// Don't show rootfs. FIXME: why??
// util-linux 2.12a happily shows rootfs...
@ -1842,8 +1843,8 @@ int mount_main(int argc, char **argv)
// Get next fstab entry
if (!getmntent_r(fstab, mtcur, getmntent_buf
+ (mtcur==mtpair ? sizeof(getmntent_buf)/2 : 0),
sizeof(getmntent_buf)/2))
+ (mtcur==mtpair ? GETMNTENT_BUFSIZE/2 : 0),
GETMNTENT_BUFSIZE/2))
{
// Were we looking for something specific?