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Upstream tried it, and then reverted by:
From: Herbert Xu <herbert@gondor.apana.org.au>
Date: Tue, 26 May 2020 23:19:05 +1000
parser: Fix double-backslash nl in old-style command sub
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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step
function old new delta
recv_and_process_peer_pkt 2476 2486 +10
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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When disabled:
function old new delta
if_ip_denied_send_HTTP_FORBIDDEN_and_exit 52 - -52
handle_incoming_and_exit 2201 2097 -104
scan_ip 170 - -170
parse_conf 1365 1065 -300
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(add/remove: 0/2 grow/shrink: 0/2 up/down: 0/-626) Total: -626 bytes
Signed-off-by: Sergey Ponomarev <stokito@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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If server responds with ETag then next time client can resend it via If-None-Match header.
Then httpd will check if file wasn't modified and if not return 304 Not Modified status code.
The ETag value is constructed from file's last modification date in unix epoch and it's size:
"hex(last_mod)-hex(file_size)" e.g. "5e132e20-417" (with quotes).
That means that it's not completely reliable as hash functions but fair enough.
The same form of ETag is used by Nginx so load balancing of static content is safe.
function old new delta
handle_incoming_and_exit 2135 2201 +66
http_response 88 96 +8
send_headers 676 683 +7
parse_conf 1362 1365 +3
http_response_type 22 24 +2
send_file_and_exit 847 841 -6
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(add/remove: 0/0 grow/shrink: 5/1 up/down: 86/-6) Total: 80 bytes
Signed-off-by: Sergey Ponomarev <stokito@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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The Last-Modified header is used for caching.
The client (browser) will send back the received date to server via If-Modified-Since request header.
But both headers MUST be an RFC 1123 formatted string.
And the formatting consumes resources on request parsing and response generation.
Instead we can use ETag header.
This simplifies logic and the only downside is that in JavaScript the document.lastModified will return null.
Signed-off-by: Sergey Ponomarev <stokito@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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RFC 2616 sec. 14.18 says that server MUST send Date header.
But in fact the header make sense only for Cache-Control and can be omitted.
In the same time the Date eats power, CPU and network resources which are critical for embedded systems.
Signed-off-by: Sergey Ponomarev <stokito@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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HTTP v1.1 was released in 1999 year and it's time to update BB HTTPD.
Browsers may behave badly with HTTP/1.0
E.g. Chrome does not send the If-None-Match header with ETag.
Signed-off-by: Sergey Ponomarev <stokito@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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The glibc implementation changed for settimeofday, resulting in "invalid
argument" error when attempting to set both timezone and time with a single
call. Fix this by calling settimeofday twice
Signed-off-by: Eddie James <eajames@linux.ibm.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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This is a recent change in GNU grep as well (after 3.1)
function old new delta
grep_file 1215 1228 +13
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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PLATFORM_LINUX is a hidden configuration option which is disabled by
default and enabled at over a hundred locations for features that are
deemed to be Linux specific.
The only effect of PLATFORM_LINUX is to control compilation of
libbb/match_fstype.c. This file is only needed by mount and umount.
Remove all references to PLATFORM_LINUX and compile match_fstype.c
if mount or umount is enabled.
Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Duplicate options are currently overridden (only the last option is kept).
This leads to unexpected behavior when using long options.
The patch adds support for long options in compliance with RFC 3396.
Fixes #13136.
function old new delta
udhcp_run_script 601 725 +124
optitem_unset_env_and_free - 38 +38
putenvp 46 59 +13
static.xmalloc_optname_optval 718 717 -1
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(add/remove: 1/0 grow/shrink: 2/1 up/down: 175/-1) Total: 174 bytes
Signed-off-by: Martin Lewis <martin.lewis.x84@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Christian Eggers <ceggers@arri.de>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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The "noprefixroute" option suppresses automatic generation of a routing
table entry based on the interface's ip address.
The ifa_flags field has only 8 bit. If higher bits are set,
rta_tb[IFA_FLAGS] has to be used instead.
Signed-off-by: Christian Eggers <ceggers@arri.de>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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With bash's read builtin it is possible to read from a file (e.g.
device-tree) until the first '\0' character:
IFS= read -r -d '' VARIABLE < file
In busybox ash the -d extension is also implemented, but checking the
read character for '\0' has to be performed after comparing with the
delimiter.
Signed-off-by: Christian Eggers <ceggers@arri.de>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Sergey Ponomarev <stokito@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Remove new lines \n and some semicolons ;. This minimize page style size from 655 to 604
Signed-off-by: Sergey Ponomarev <stokito@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
lsscsi_main 298 302 +4
get_line 56 45 -11
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(add/remove: 0/0 grow/shrink: 1/1 up/down: 4/-11) Total: -7 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
resolve_peer_hostname 129 196 +67
recv_and_process_peer_pkt 2475 2476 +1
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(add/remove: 0/0 grow/shrink: 2/0 up/down: 68/0) Total: 68 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Patch by Baruch Burstein <bmburstein@gmail.com>
function old new delta
parse_pasv_epsv 153 181 +28
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
last_char_is 40 28 -12
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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dname_dec: now iterates over the packet only once.
convert_dname: remove redundant checks and code shrink.
While testing I've noticed that some of the tests didn't compile
properly, so I fixed them.
function old new delta
dname_dec 286 267 -19
dname_enc 166 143 -23
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(add/remove: 0/0 grow/shrink: 0/2 up/down: 0/-42) Total: -42 bytes
Signed-off-by: Martin Lewis <martin.lewis.x84@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Some editors (like vim) use renaming strategy to save file. That means
they save a file to some random name and then rename it to final
location. The advantage is that such save is atomic.
However, crontab -e holds open fd to the temporary file, meaning it
never sees the changes. The temporary file needs to be re-opened after
the editor terminates for the changes to properly save.
Fixes #12491
Signed-off-by: Gray Wolf <wolf@wolfsden.cz>
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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Code shrink and prevention of possible out of bounds access.
function old new delta
nth_string 36 26 -10
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(add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-10) Total: -10 bytes
text data bss dec hex filename
981342 16915 1872 1000129 f42c1 busybox_old
981332 16915 1872 1000119 f42b7 busybox_unstripped
Signed-off-by: Martin Lewis <martin.lewis.x84@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
skip_whitespace_if_prefixed_with - 17 +17
procps_read_smaps 911 854 -57
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(add/remove: 1/0 grow/shrink: 0/1 up/down: 17/-57) Total: -40 bytes
Signed-off-by: Martin Lewis <martin.lewis.x84@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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fill_envp now iterates over the packet only once instead of a few hundred times
using the new option scanner.
function old new delta
udhcp_scan_options - 189 +189
putenvp - 46 +46
init_scan_state - 22 +22
udhcp_get_option 227 104 -123
udhcp_run_script 835 601 -234
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(add/remove: 3/0 grow/shrink: 0/2 up/down: 257/-357) Total: -100 bytes
Signed-off-by: Martin Lewis <martin.lewis.x84@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Added an option scanner to udhcp to enable iteration over packet options.
Signed-off-by: Martin Lewis <martin.lewis.x84@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
is_ip_address - 54 +54
spawn_https_helper_openssl 461 486 +25
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(add/remove: 1/0 grow/shrink: 1/0 up/down: 79/0) Total: 79 bytes
Signed-off-by: Scott Court <z5t1@z5t1.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Norbert Lange <nolange79@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Norbert Lange <nolange79@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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busybox will remove directory symlinks, which is at
odds with common layouts that have some of
bin/lib/lib32/lib64 symlinked.
this adds a exludelist for critcal and often symlinked
directories.
Fixes: Bug 12551
function old new delta
remove_file_array 139 231 +92
Signed-off-by: Norbert Lange <nolange79@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Add a -b option, identical to debians "traditional" netcat.
This allows sending (subnet) UDP Broadcasts.
function old new delta
packed_usage 33420 33441 +21
nc_main 1041 1057 +16
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(add/remove: 0/0 grow/shrink: 2/0 up/down: 37/0) Total: 37 bytes
Signed-off-by: Norbert Lange <nolange79@gmail.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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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: 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: 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: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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The udhcpc script calls ip addr flush .. which flushes addresses
of any address family, including IPv6. However, busybox udhcpc is
IPv4 only and should not influence IPv6 addressing. Hence use ip
addr flush with family constraint.
The script particularly broke IPv6 SLAAC: Typically when udhcpc
calls the script the kernel already assigned the IPv6 link-local
address. The flush removes the link-local IPv6 address again and
prohibits proper IPv6 operation such as SLAAC since neighbor
discovery protocol relies on IPv6 link-local addressing.
Signed-off-by: Stefan Agner <stefan.agner@toradex.com>
[Taken from https://git.openembedded.org/openembedded-core/commit/meta/recipes-core/busybox/files/simple.script?id=b77541dbb2f442e51842f9d24c8745a6df2d1478]
Signed-off-by: Quentin Schulz <quentin.schulz@streamunlimited.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
static.MAC_DHCP6MCAST_ADDR - 6 +6
Signed-off-by: Uwe Glaeser <uwe.glaeser@dormakaba.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
collect_tv - 132 +132
collect_monotonic - 61 +61
nmeter_main 754 778 +24
gmtime - 21 +21
init_monotonic - 18 +18
init_functions 44 48 +4
packed_usage 33432 33420 -12
collect_time 125 19 -106
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(add/remove: 5/0 grow/shrink: 2/2 up/down: 260/-118) Total: 142 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Wno-string-plus-int options for clang
these options were added in b4ef2e3467d8e980ccf13c9dd342459c013b455f commit
gcc shows unrecognized command-line option warnings
Signed-off-by: Biswapriyo Nath <nathbappai@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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On Alpine, some users use /dev/null as a home directory. When removing
such a user with `deluser --remove-home` this causes the /dev/null
device file to be removed which is undesirable. To prevent this pitfall,
check if the home directory specified for the user is an actual
directory (or a symlink to a directory).
Implementations of similar tools for other operating systems also
implement such checks. For instance, the OpenBSD rmuser(1)
implementation [0].
[0]: https://github.com/openbsd/src/blob/b69faa6c70c5bfcfdddc6138cd8e0ee18cc15b03/usr.sbin/adduser/rmuser.perl#L143-L151
function old new delta
deluser_main 337 380 +43
Signed-off-by: Sören Tempel <soeren+git@soeren-tempel.net>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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