Age | Commit message (Collapse) | Author |
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function old new delta
INET6_setroute 492 472 -20
do_iplink 1357 1330 -27
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(add/remove: 0/0 grow/shrink: 0/2 up/down: 0/-47) Total: -47 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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If we don't ask for numerical output, and the symbolic look-up failed
we used to get "(null)", but the numeric output would be better.
function old new delta
ip_port_str 109 121 +12
Signed-off-by: Mark Marshall <mark.marshall@omicronenergy.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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The wrong character was used to indicate options taking an integer
parameter.
Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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text data bss dec hex filename
933035 473 6836 940344 e5938 busybox_old
933051 473 6836 940360 e5948 busybox_unstripped
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
update_local_clock 834 858 +24
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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EINTR _should_ only happen on two signals we trap, and safe_poll
_should_ work here just fine, but there were kernel bugs where spurious EINTRs
happen (e.g. on ptrace attach). Be safe.
function old new delta
udhcpd_main 1437 1468 +31
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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In other words: try to correct initially existing clock offset first,
before assuming that our clock drifts.
function old new delta
update_local_clock 826 834 +8
ntp_init 550 557 +7
filter_datapoints 179 173 -6
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(add/remove: 0/0 grow/shrink: 2/1 up/down: 15/-6) Total: 9 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Fixes:
commit 52a515d18724bbb34e3ccbbb0218efcc4eccc0a8
"udhcp: use poll() instead of select()"
Feb 16 2017
udhcp_sp_read() is meant to check whether signal pipe indeed has some data to read.
In the above commit, it was changed as follows:
- if (!FD_ISSET(signal_pipe.rd, rfds))
+ if (!pfds[0].revents)
return 0;
The problem is, the check was working for select() purely by accident.
Caught signal interrupts select()/poll() syscalls, they return with EINTR
(regardless of SA_RESTART flag in sigaction). _Then_ signal handler is invoked.
IOW: they can't see any changes to fd state caused by signal haldler
(in our case, signal handler makes signal pipe ready to be read).
For select(), it means that rfds[] bit array is unmodified, bit of signal
pipe's read fd is still set, and the above check "works": it thinks select()
says there is data to read.
This accident does not work for poll(): .revents stays clear, and we do not
try reading signal pipe as we should. In udhcpd, we fall through and block
in socket read. Further SIGTERM signals simply cause socket read to be
interrupted and then restarted (since SIGTERM handler has SA_RESTART=1).
Fixing this as follows: remove the check altogether. Set signal pipe read fd
to nonblocking mode. Always read it in udhcp_sp_read().
If read fails, assume it's EAGAIN and return 0 ("no signal seen").
udhcpd avoids reading signal pipe on every recvd packet by looping if EINTR
(using safe_poll()) - thus ensuring we have correct .revents for all fds -
and calling udhcp_sp_read() only if pfds[0].revents!=0.
udhcpc performs much fewer reads (typically it sleeps >99.999% of the time),
there is no need to optimize it: can call udhcp_sp_read() after each poll
unconditionally.
To robustify socket reads, unconditionally set pfds[1].revents=0
in udhcp_sp_fd_set() (which is before poll), and check it before reading
network socket in udhcpd.
TODO:
This might still fail: if pfds[1].revents=POLLIN, socket read may still block.
There are rare cases when select/poll indicates that data can be read,
but then actual read still blocks (one such case is UDP packets with
wrong checksum). General advise is, if you use a poll/select loop,
keep all your fds nonblocking.
Maybe we should also do that to our network sockets?
function old new delta
udhcp_sp_setup 55 65 +10
udhcp_sp_fd_set 54 60 +6
udhcp_sp_read 46 36 -10
udhcpd_main 1451 1437 -14
udhcpc_main 2723 2708 -15
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(add/remove: 0/0 grow/shrink: 2/3 up/down: 16/-39) Total: -23 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
packed_usage 32547 32550 +3
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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This avoids pulling in gmtime's static buffer:
function old new delta
svlogd_main 1401 1412 +11
send_headers 668 678 +10
gmtime 21 - -21
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(add/remove: 0/2 grow/shrink: 2/0 up/down: 21/-21) Total: 0 bytes
text data bss dec hex filename
920221 555 5804 926580 e2374 busybox_old
920221 555 5740 926516 e2334 busybox_unstripped
^^^^
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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These were data/bss:
static.proc_read 1 - -1
int_list 4 - -4
int_last 4 - -4
We never call display_interfaces() twice, thus code to not scan /proc twice
never triggers.
function old new delta
do_if_print - 1998 +1998
display_interfaces 145 249 +104
static.proc_read 1 - -1
add_interface 104 103 -1
int_list 4 - -4
int_last 4 - -4
if_readlist_proc 560 542 -18
if_readconf 141 - -141
do_if_fetch 643 - -643
ife_print 1296 - -1296
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(add/remove: 1/6 grow/shrink: 1/2 up/down: 2102/-2108) Total: -6 bytes
text data bss dec hex filename
933084 473 6844 940401 e5971 busybox_old
933087 473 6836 940396 e596c busybox_unstripped
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
ife_print 1293 1296 +3
display_interfaces 145 146 +1
if_readconf 162 141 -21
if_readlist_proc 631 560 -71
do_if_fetch 753 643 -110
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(add/remove: 0/0 grow/shrink: 2/3 up/down: 4/-202) Total: -198 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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When fetching a https:// URL with HTTP proxy configured
(e.g. with environment variable http_proxy=http://your-proxy:3128)
busybox was making a https connection to the proxy.
This was because the protocol scheme for the target URL was used to determine whether to connect to the proxy over SSL or not.
When the proxy is in use, the decision on whether to connect to the proxy over https
should based on the proxy URL not on the target URL.
function old new delta
wget_main 2381 2387 +6
Signed-off-by: Peter Lloyd <l-busybox@pgl22.co.uk>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
tcpudpsvd_main 1775 1780 +5
ipsvd_perhost_add 108 107 -1
cclen 4 - -4
cc 4 - -4
ipsvd_perhost_init 30 25 -5
ipsvd_perhost_remove 80 44 -36
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(add/remove: 0/2 grow/shrink: 1/3 up/down: 5/-50) Total: -45 bytes
text data bss dec hex filename
933358 473 6852 940683 e5a8b busybox_old
933326 473 6844 940643 e5a63 busybox_unstripped
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Attaching an interface to a VRF is done by setting the interface's
master. Besides VRF, this can also be used for bridges.
function old new delta
set_master - 142 +142
do_iplink 1262 1357 +95
packed_usage 32546 32539 -7
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(add/remove: 1/0 grow/shrink: 1/1 up/down: 237/-7) Total: 230 bytes
Signed-off-by: Jan Luebbe <jluebbe@debian.org>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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VRF interfaces have a mandatory table parameter, which needs to be
specified using a RTNL attribute.
function old new delta
do_add_or_delete 1150 1254 +104
packed_usage 32444 32546 +102
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(add/remove: 0/0 grow/shrink: 2/0 up/down: 206/0) Total: 206 bytes
Signed-off-by: Jan Luebbe <jluebbe@debian.org>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
tls_xread_record 499 489 -10
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
sendping6 80 85 +5
sendping4 106 111 +5
sendping_tail 209 204 -5
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(add/remove: 0/0 grow/shrink: 2/1 up/down: 10/-5) Total: 5 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
common_ping_main 1757 1862 +105
packed_usage 32367 32427 +60
sendping_tail 236 209 -27
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(add/remove: 0/0 grow/shrink: 2/1 up/down: 165/-27) Total: 138 bytes
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
get_sanitized_hdr - 156 +156
fgets_trim_sanitize - 128 +128
ftpcmd 129 133 +4
parse_url 461 454 -7
sanitize_string 14 - -14
wget_main 2431 2381 -50
fgets_and_trim 119 - -119
gethdr 163 - -163
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(add/remove: 2/3 grow/shrink: 1/2 up/down: 288/-353) Total: -65 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
catcher 310 309 -1
arping_main 1668 1641 -27
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
bb_getsockname - 18 +18
xrtnl_open 88 83 -5
do_iplink 1216 1209 -7
arping_main 1686 1668 -18
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(add/remove: 2/0 grow/shrink: 0/3 up/down: 18/-30) Total: -12 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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This way, we can zero them all in one go.
We do malloc() anyway, thus nothing is lost by mallocing "globals"
function old new delta
arping_main 1683 1686 +3
finish 100 86 -14
catcher 350 310 -40
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(add/remove: 0/0 grow/shrink: 1/2 up/down: 3/-54) Total: -51 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
arping_main 1629 1635 +6
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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ARPING 192.168.1.1 from 192.168.1.172 wlan0
Unicast reply from 192.168.1.1 [F4:F2:6D:52:A8:DE] 1.672ms
Sent 1 probes (1 broadcast(s))
Received 1 response(s)
ARPING 192.168.1.1 from 192.168.1.172 wlan0
Unicast reply from 192.168.1.1 [f4:f2:6d:52:a8:de] 1.152ms
Sent 1 probe(s) (1 broadcast(s))
Received 1 response(s) (0 request(s), 0 broadcast(s))
function old new delta
finish 120 100 -20
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Do not clear extra bits on option_mask32, it's not necessary.
Move DAD bit to 2, this makes exit logic simpler.
function old new delta
arping_main 1655 1629 -26
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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parse_rtattr() was using tb[] array without initializing it.
Based on patch by Balaji Punnuru <balaji_punnuru@cable.comcast.com>
function old new delta
parse_rtattr 85 107 +22
print_route 1630 1617 -13
print_linkinfo 807 794 -13
iproute_get 835 822 -13
print_rule 680 665 -15
ll_remember_index 263 248 -15
print_addrinfo 1223 1197 -26
ipaddr_list_or_flush 1253 1223 -30
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(add/remove: 0/0 grow/shrink: 1/7 up/down: 22/-125) Total: -103 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
wget_main 2422 2431 +9
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Since bb_info_msg() was eliminated type of buffering on stdout is not important
function old new delta
udhcpd_main 1463 1451 -12
udhcpc_main 2735 2723 -12
setlinebuf 19 - -19
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(add/remove: 0/2 grow/shrink: 0/2 up/down: 0/-43) Total: -43 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
wget_main 2382 2422 +40
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
parse_pasv_epsv - 151 +151
wget_main 2440 2382 -58
xconnect_ftpdata 223 94 -129
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(add/remove: 2/0 grow/shrink: 0/2 up/down: 151/-187) Total: -36 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
spawn_ssl_client - 185 +185
parse_url 409 461 +52
packed_usage 32259 32278 +19
tls_run_copy_loop 293 306 +13
ssl_client_main 128 138 +10
showmode 330 338 +8
P_FTPS - 5 +5
filter_datapoints 177 179 +2
deflate 907 905 -2
decode_one_format 723 716 -7
wget_main 2591 2440 -151
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(add/remove: 2/0 grow/shrink: 6/3 up/down: 294/-160) Total: 134 bytes
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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Symptoms: connecting to
openssl s_server -cert vsftpd.pem -port 990 -debug -cipher AES128-SHA
works, but with "-verify 1" option added it does not.
function old new delta
tls_xread_record 474 499 +25
tls_handshake 1582 1607 +25
bad_record_die 98 110 +12
tls_run_copy_loop 282 293 +11
tls_xread_handshake_block 58 51 -7
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(add/remove: 0/0 grow/shrink: 4/1 up/down: 73/-7) Total: 66 bytes
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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Based on a patch by Kev Kitchens.
function old new delta
xconnect_ftpdata 149 223 +74
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
cmdio_write_ok 45 49 +4
cmdio_write_error 45 49 +4
handle_dir_common 360 363 +3
handle_cwd 40 43 +3
port_or_pasv_was_seen 37 39 +2
pasv_active 13 15 +2
cmdio_write_raw 34 36 +2
cmdio_write 78 80 +2
get_remote_transfer_fd 94 93 -1
port_pasv_cleanup 50 45 -5
bind_for_passive_mode 124 119 -5
cmdio_get_cmd_and_arg 237 230 -7
timeout_handler 104 93 -11
ftpd_main 2222 2152 -70
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(add/remove: 0/0 grow/shrink: 8/6 up/down: 22/-99) Total: -77 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
udhcpd_main 1461 1463 +2
add_lease 320 318 -2
g_leases 4 - -4
write_leases 223 214 -9
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(add/remove: 0/1 grow/shrink: 1/2 up/down: 2/-15) Total: -13 bytes
text data bss dec hex filename
933232 481 6856 940569 e5a19 busybox_old
933223 481 6852 940556 e5a0c busybox_unstripped
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Invent a fictitious MAC only once
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
d6_read_interface 454 600 +146
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
udhcpc_main 2840 2826 -14
udhcpc6_main 2699 2670 -29
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 26028 25966 -62
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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