From e6a2f4cc5a47d3022bdf5ca2cacbaa5a8c5baf7a Mon Sep 17 00:00:00 2001 From: Denys Vlasenko Date: Thu, 21 Apr 2016 16:26:30 +0200 Subject: libbb: make bb_common_bufsiz1 1 kbyte, add capability to use bss tail for it The config item is FEATURE_USE_BSS_TAIL. When it is off (default): function old new delta read_config 210 228 +18 doCommands 2279 2294 +15 ipneigh_list_or_flush 763 772 +9 ipaddr_list_or_flush 1256 1261 +5 display_process_list 1301 1306 +5 conspy_main 1378 1383 +5 do_lzo_compress 352 355 +3 do_lzo_decompress 565 567 +2 push 46 44 -2 inetd_main 2136 2134 -2 uevent_main 421 418 -3 addLines 97 92 -5 bb_common_bufsiz1 8193 1024 -7169 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 8/5 up/down: 62/-7181) Total: -7119 bytes text data bss dec hex filename 829850 4086 9080 843016 cdd08 busybox_old 829901 4086 1904 835891 cc133 busybox_unstripped FEATURE_USE_BSS_TAIL=y: read_config 210 228 +18 doCommands 2279 2294 +15 ipneigh_list_or_flush 763 772 +9 ipaddr_list_or_flush 1256 1261 +5 display_process_list 1301 1306 +5 conspy_main 1378 1383 +5 do_lzo_compress 352 355 +3 do_lzo_decompress 565 567 +2 inetd_main 2136 2134 -2 bb_common_bufsiz1 8193 - -8193 ------------------------------------------------------------------------------ (add/remove: 0/1 grow/shrink: 8/1 up/down: 62/-8195) Total: -8133 bytes text data bss dec hex filename 829850 4086 9080 843016 cdd08 busybox_old 829911 4086 880 834877 cbd3d busybox_unstripped FIXME: setup_common_bufsiz() calls are missing. Signed-off-by: Denys Vlasenko --- miscutils/chat.c | 1 + miscutils/conspy.c | 6 ++++-- miscutils/crond.c | 3 ++- miscutils/dc.c | 3 ++- miscutils/fbsplash.c | 6 ++++-- miscutils/hdparm.c | 3 ++- miscutils/i2c_tools.c | 1 + miscutils/inotifyd.c | 6 ++++-- miscutils/less.c | 6 ++++-- miscutils/microcom.c | 6 ++++-- 10 files changed, 28 insertions(+), 13 deletions(-) (limited to 'miscutils') diff --git a/miscutils/chat.c b/miscutils/chat.c index bd2abc24a..25850dd20 100644 --- a/miscutils/chat.c +++ b/miscutils/chat.c @@ -17,6 +17,7 @@ //usage: "chat '' ATZ OK ATD123456 CONNECT '' ogin: pppuser word: ppppass '~'" #include "libbb.h" +#include "common_bufsiz.h" // default timeout: 45 sec #define DEFAULT_CHAT_TIMEOUT 45*1000 diff --git a/miscutils/conspy.c b/miscutils/conspy.c index 1a46a4340..0d96a5f9a 100644 --- a/miscutils/conspy.c +++ b/miscutils/conspy.c @@ -42,6 +42,7 @@ //usage: "\n -y LINE Starting line" #include "libbb.h" +#include "common_bufsiz.h" #include #define ESC "\033" @@ -363,7 +364,8 @@ int conspy_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; int conspy_main(int argc UNUSED_PARAM, char **argv) { char tty_name[sizeof(DEV_TTY "NN")]; -#define keybuf bb_common_bufsiz1 +#define keybuf bb_common_bufsiz1 +#define sizeof_keybuf COMMON_BUFSIZE struct termios termbuf; unsigned opts; unsigned ttynum; @@ -513,7 +515,7 @@ int conspy_main(int argc UNUSED_PARAM, char **argv) default: // Read the keys pressed k = keybuf + G.key_count; - bytes_read = read(G.kbd_fd, k, sizeof(keybuf) - G.key_count); + bytes_read = read(G.kbd_fd, k, sizeof_keybuf - G.key_count); if (bytes_read < 0) goto abort; diff --git a/miscutils/crond.c b/miscutils/crond.c index eb327f855..8536d43c5 100644 --- a/miscutils/crond.c +++ b/miscutils/crond.c @@ -60,6 +60,7 @@ //usage: "\n -c DIR Cron dir. Default:"CONFIG_FEATURE_CROND_DIR"/crontabs" #include "libbb.h" +#include "common_bufsiz.h" #include /* glibc frees previous setenv'ed value when we do next setenv() @@ -140,7 +141,7 @@ struct globals { char *env_var_logname; #endif } FIX_ALIASING; -#define G (*(struct globals*)&bb_common_bufsiz1) +#define G (*(struct globals*)bb_common_bufsiz1) #define INIT_G() do { \ G.log_level = 8; \ G.crontab_dir_name = CRONTABS; \ diff --git a/miscutils/dc.c b/miscutils/dc.c index 9c74172ba..3fbb89f5b 100644 --- a/miscutils/dc.c +++ b/miscutils/dc.c @@ -4,6 +4,7 @@ */ #include "libbb.h" +#include "common_bufsiz.h" #include //usage:#define dc_trivial_usage @@ -47,7 +48,7 @@ struct globals { double stack[1]; } FIX_ALIASING; enum { STACK_SIZE = (COMMON_BUFSIZE - offsetof(struct globals, stack)) / sizeof(double) }; -#define G (*(struct globals*)&bb_common_bufsiz1) +#define G (*(struct globals*)bb_common_bufsiz1) #define pointer (G.pointer ) #define base (G.base ) #define stack (G.stack ) diff --git a/miscutils/fbsplash.c b/miscutils/fbsplash.c index 9557c41db..b26ad2c15 100644 --- a/miscutils/fbsplash.c +++ b/miscutils/fbsplash.c @@ -34,6 +34,7 @@ //usage: "\n commands: 'NN' (% for progress bar) or 'exit'" #include "libbb.h" +#include "common_bufsiz.h" #include /* If you want logging messages on /tmp/fbsplash.log... */ @@ -372,11 +373,12 @@ static void fb_drawimage(void) * - A raster of Width * Height pixels in triplets of rgb * in pure binary by 1 or 2 bytes. (we support only 1 byte) */ -#define concat_buf bb_common_bufsiz1 +#define concat_buf bb_common_bufsiz1 +#define sizeof_concat_buf COMMON_BUFSIZE read_ptr = concat_buf; while (1) { int w, h, max_color_val; - int rem = concat_buf + sizeof(concat_buf) - read_ptr; + int rem = concat_buf + sizeof_concat_buf - read_ptr; if (rem < 2 || fgets(read_ptr, rem, theme_file) == NULL ) { diff --git a/miscutils/hdparm.c b/miscutils/hdparm.c index 8e201ac35..9e141de2f 100644 --- a/miscutils/hdparm.c +++ b/miscutils/hdparm.c @@ -63,6 +63,7 @@ //usage: "\n -z Reread partition table" #include "libbb.h" +#include "common_bufsiz.h" /* must be _after_ libbb.h: */ #include #include @@ -367,7 +368,7 @@ struct globals { unsigned char flushcache[4] = { WIN_FLUSHCACHE, 0, 0, 0 }; #endif } FIX_ALIASING; -#define G (*(struct globals*)&bb_common_bufsiz1) +#define G (*(struct globals*)bb_common_bufsiz1) #define get_identity (G.get_identity ) #define get_geom (G.get_geom ) #define do_flush (G.do_flush ) diff --git a/miscutils/i2c_tools.c b/miscutils/i2c_tools.c index aa1c7c5cc..57bb72ae7 100644 --- a/miscutils/i2c_tools.c +++ b/miscutils/i2c_tools.c @@ -60,6 +60,7 @@ */ #include "libbb.h" +#include "common_bufsiz.h" #include #include diff --git a/miscutils/inotifyd.c b/miscutils/inotifyd.c index 908d657fd..1d28e8f99 100644 --- a/miscutils/inotifyd.c +++ b/miscutils/inotifyd.c @@ -56,6 +56,7 @@ //usage: "\nWhen x event happens for all FILEs, inotifyd exits." #include "libbb.h" +#include "common_bufsiz.h" #include static const char mask_names[] ALIGN1 = @@ -162,8 +163,9 @@ int inotifyd_main(int argc, char **argv) // read out all pending events // (NB: len must be int, not ssize_t or long!) xioctl(pfd.fd, FIONREAD, &len); -#define eventbuf bb_common_bufsiz1 - ie = buf = (len <= sizeof(eventbuf)) ? eventbuf : xmalloc(len); +#define eventbuf bb_common_bufsiz1 +#define sizeof_eventbuf COMMON_BUFSIZE + ie = buf = (len <= sizeof_eventbuf) ? eventbuf : xmalloc(len); len = full_read(pfd.fd, buf, len); // process events. N.B. events may vary in length while (len > 0) { diff --git a/miscutils/less.c b/miscutils/less.c index ccdb15fdc..94ecf1686 100644 --- a/miscutils/less.c +++ b/miscutils/less.c @@ -127,6 +127,7 @@ #include /* sched_yield() */ #include "libbb.h" +#include "common_bufsiz.h" #if ENABLE_FEATURE_LESS_REGEXP #include "xregex.h" #endif @@ -439,7 +440,8 @@ static int at_end(void) */ static void read_lines(void) { -#define readbuf bb_common_bufsiz1 +#define readbuf bb_common_bufsiz1 +#define sizeof_readbuf COMMON_BUFSIZE char *current_line, *p; int w = width; char last_terminated = terminated; @@ -480,7 +482,7 @@ static void read_lines(void) time_t t; errno = 0; - eof_error = safe_read(STDIN_FILENO, readbuf, sizeof(readbuf)); + eof_error = safe_read(STDIN_FILENO, readbuf, sizeof_readbuf); if (errno != EAGAIN) break; t = time(NULL); diff --git a/miscutils/microcom.c b/miscutils/microcom.c index 5e29a1acd..5eb2e6743 100644 --- a/miscutils/microcom.c +++ b/miscutils/microcom.c @@ -19,6 +19,7 @@ //usage: "\n -X Disable special meaning of NUL and Ctrl-X from stdin" #include "libbb.h" +#include "common_bufsiz.h" // set raw tty mode static void xget1(int fd, struct termios *t, struct termios *oldt) @@ -155,10 +156,11 @@ int microcom_main(int argc UNUSED_PARAM, char **argv) skip_write: ; } if (pfd[0].revents) { -#define iobuf bb_common_bufsiz1 +#define iobuf bb_common_bufsiz1 +#define sizeof_iobuf COMMON_BUFSIZE ssize_t len; // read from device -> write to stdout - len = safe_read(sfd, iobuf, sizeof(iobuf)); + len = safe_read(sfd, iobuf, sizeof_iobuf); if (len > 0) full_write(STDOUT_FILENO, iobuf, len); else { -- cgit v1.2.3