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Signed-off-by: Cédric Cabessa <ccabessa@genymobile.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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As suggested by Mike. No bloat-o-meter difference, but a bit nicer to look at.
We cannot convert the call to log_to_shmem() as it checks for G.shbuf outside
the function, and G.shbuf is only available when IPC support is enabled.
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Why invent our own shared memory circular buffer when the kernel has a
perfectly fine one already?
This can be used as a smaller/simpler alternative to the syslogd IPC support
(as IPC shmem/klogd/logread aren't needed), while also allowing centralised
logging of everything (kernel messages, userspace bootup and syslog)
when used together with ttyprintk.
Notice that kernel 3.5+ is needed to store syslog facility in printk buffer,
otherwise only the priority is stored.
bloat-o-meter compared to IPC+klogd+logread:
function old new delta
get_linux_version_code - 84 +84
lbb_prepare 25 90 +65
applet_nameofs 6 - -6
static.stdout@@GLIBC_2 8 - -8
applet_names 23 9 -14
bb_msg_standard_output 16 - -16
init_sem 18 - -18
xatoull_range 19 - -19
overlapping_strcpy 21 - -21
init_data 56 32 -24
applet_main 24 - -24
main 124 99 -25
full_write2_str 26 - -26
error_exit 26 - -26
bb_basename 30 - -30
sem_up 32 - -32
interrupted 35 - -35
fflush_stdout_and_exit 38 - -38
bb_banner 46 - -46
find_applet_by_name 59 - -59
bb_signals_recursive_norestart 90 - -90
run_applet_no_and_exit 104 - -104
timestamp_and_log 651 523 -128
syslogd_main 798 581 -217
xstrtoull_range_sfx 267 - -267
run_applet_and_exit 432 - -432
klogd_main 490 - -490
logread_main 508 - -508
.rodata 1870 937 -933
bb_common_bufsiz1 8193 - -8193
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(add/remove: 2/26 grow/shrink: 1/6 up/down: 149/-11829) Total: -11680 bytes
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
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We set a default path for the directory where pidfiles are create
when FEATURE_PIDFILE is selected. The default has no effect on
applets which must specify a pidfile path on the command line to
run, and it can be overridden by applets which optionally allow
the user to specify the pidfile path.
We also add pidfile write/remove support for klogd, ntpd and watchdog.
For syslogd, we add a missing remove_pidfile() for better cleanup
on daemon exit.
Signed-off-by: Anthony G. Basile <blueness@gentoo.org>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
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Function log_locally() within the syslogd can potentially lock up when
restarting the daemon after a power loss in case the unplanned shutdown hit the
rename operation during logfile rotation.
While POSIX requires the rename operation to be atomic, many file systems such
as JFFS2 implement the rename operation in 2 steps by linking the new name
followed by unlinking the original name. In case of a power loss during the
rename the system can end up with /var/log/messages and /var/log/messages.0
being 2 hard links to the same file.
When the syslog daemon restarts in such a situation it will rediscover the need
to rotate the log files, however, POSIX also requires that rename does nothing
and reports success in case oldpath and newpath are existing hard links to the
same file. Looping through reopen: by (O_CREAT | O_APPEND), the daemon
eternally reopens the same file without succeeding to rotate.
Signed-off-by: Christian Engelmayer <christian.engelmayer@frequentis.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
packed_usage 28706 28623 -83
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Sergey Naumov <sknaumov@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Pere Orga <gotrunks@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
syslogd_main 1241 1870 +629
timestamp_and_log 301 540 +239
find_by_name - 37 +37
find_by_val - 22 +22
init_data 64 68 +4
log_locally 603 413 -190
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(add/remove: 2/0 grow/shrink: 3/1 up/down: 931/-190) Total: 741 bytes
Signed-off-by: Sergey Naumov <sknaumov@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Davide Cavalca <davide@geexbox.org>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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This change retains "or later" state! No licensing _changes_ here,
only form is adjusted (article, space between "GPL" and "v2" and so on).
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
syslogd_main 1201 1262 +61
Signed-off-by: Daniel Dickinson <cshore@csolve.net>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Janne Kiviluoto <janne.kiviluoto@bluegiga.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
syslogd_main 1082 1177 +95
init_data 72 64 -8
Signed-off-by: Thomas Geulig <geulig@nentec.de>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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and SKIP_XXXX to IF_NOT_XXXX - the second one was especially
badly named. It was not skipping anything!
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make signal handling syncronous (old was racy)
function old new delta
syslogd_main 963 1090 +127
quit_signal 96 - -96
log_locally 743 595 -148
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(add/remove: 0/1 grow/shrink: 1/1 up/down: 127/-244) Total: -117 bytes
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Some are fixing real bugs.
function old new delta
syslogd_main 938 958 +20
get_signum 136 143 +7
obj_load 777 782 +5
recv_from_to 210 214 +4
get_next_block 1795 1799 +4
display_topmem_process_list 1117 1121 +4
logread_main 484 487 +3
buffer_fill_and_print 73 76 +3
kill_main 687 689 +2
ll_remember_index 240 241 +1
do_stats 452 453 +1
if_readconf 166 165 -1
display_process_list 1192 1191 -1
run_applet_and_exit 507 505 -2
print_signames 33 31 -2
parse_one_line 1092 1090 -2
find_out_spec 57 55 -2
add_ksymoops_symbols 421 419 -2
ash_main 1407 1402 -5
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(add/remove: 0/0 grow/shrink: 11/8 up/down: 54/-17) Total: 37 bytes
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function old new delta
procps_scan 1265 1298 +33
aliascmd 278 283 +5
parse_file_cmd 116 120 +4
dname_enc 373 377 +4
setcmd 90 93 +3
execcmd 57 60 +3
count_lines 72 74 +2
process_command_subs 340 339 -1
test_main 409 407 -2
mknod_main 179 177 -2
handle_incoming_and_exit 2653 2651 -2
argstr 1312 1310 -2
shiftcmd 131 128 -3
exitcmd 46 43 -3
dotcmd 297 294 -3
breakcmd 86 83 -3
evalpipe 353 349 -4
evalcommand 1180 1176 -4
evalcmd 109 105 -4
send_tree 374 369 -5
mkfifo_main 82 77 -5
evalsubshell 152 147 -5
typecmd 75 69 -6
letcmd 61 55 -6
add_cmd 1190 1183 -7
main 891 883 -8
ash_main 1415 1407 -8
parse_stream 1377 1367 -10
alloc_procps_scan 55 - -55
------------------------------------------------------------------------------
(add/remove: 0/1 grow/shrink: 7/21 up/down: 54/-148) Total: -94 bytes
text data bss dec hex filename
797195 658 7428 805281 c49a1 busybox_old
797101 658 7428 805187 c4943 busybox_unstripped
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safe_gethostname - 48 +48
glob3 35 37 +2
timestamp_and_log 314 315 +1
udhcp_send_kernel_packet 234 231 -3
scan_tree 275 271 -4
passwd_main 1074 1070 -4
print_login_prompt 68 58 -10
obscure 392 377 -15
syslogd_main 882 866 -16
print_login_issue 516 478 -38
hostname_main 278 223 -55
parse_and_put_prompt 825 756 -69
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 2/9 up/down: 51/-214) Total: -163 bytes
text data bss dec hex filename
798791 728 7484 807003 c505b busybox_old
798631 728 7484 806843 c4fbb busybox_unstripped
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*: minor shrink
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syslogd: trivial build fix
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which sets same handler for many signals. sig_catch is nuked
(bb_signals_recursive is more descriptive name).
*: use them as appropriate.
function old new delta
bb_signals_recursive - 95 +95
bb_signals - 52 +52
run_command 258 273 +15
svlogd_main 1368 1377 +9
runsv_main 1746 1752 +6
runsvdir_main 1643 1646 +3
UNSPEC_print 64 66 +2
time_main 1128 1127 -1
...
resize_main 246 210 -36
sig_catch 63 - -63
set_fatal_sighandler 85 14 -71
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(add/remove: 2/1 grow/shrink: 5/24 up/down: 182/-548) Total: -366 bytes
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fully closes bug 1574. +8 bytes.
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size-neutral WRT -std=gnu99 and fixes several compilation errors for strict
C99 mode.
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function old new delta
timestamp_and_log_internal - 24 +24
log_locally 741 744 +3
timestamp_and_log 313 314 +1
syslogd_main 904 897 -7
quit_signal 101 94 -7
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(add/remove: 1/0 grow/shrink: 2/2 up/down: 28/-14) Total: 14 bytes
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retry resolutions every two minutes instead.
function old new delta
syslogd_main 865 904 +39
timestamp_and_log 324 313 -11
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(add/remove: 0/0 grow/shrink: 1/1 up/down: 39/-11) Total: 28 bytes
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init: remove obsolete comment
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function old new delta
create_socket - 134 +134
syslogd_main 1132 865 -267
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(add/remove: 1/0 grow/shrink: 0/1 up/down: 134/-267) Total: -133 bytes
text data bss dec hex filename
775603 974 9420 785997 bfe4d busybox_old
775445 974 9420 785839 bfdaf busybox_unstripped
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syslogd: strip trailing '\n' too, not only NULs
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