This example single-applet configuration would trigger the bloat:
CONFIG_FEATURE_SEAMLESS_XZ=y
CONFIG_FEATURE_SEAMLESS_LZMA=y
CONFIG_FEATURE_SEAMLESS_BZ2=y
CONFIG_FEATURE_SEAMLESS_GZ=y
CONFIG_BUNZIP2=y
# CONFIG_ZCAT is not set
# All other applets disabled
Here, the resulting "busybox-bunzip2" binary would contain
unpack_gz_stream, unpack_lzma_stream and unpack_xz_stream functions
code. In other words, the gzip, lzma and xz decompressors' code are
linked into the binary unnecessarily.
This happens because SEAMLESS_MAGIC != 0 and compiler is unable
to figure out that SEAMLESS_MAGIC bit is never set.
Fix this by disabling SEAMLESS_MAGIC option flag (setting its value
to 0) when zcat is disabled. This will help the compiler optimize out
bbunpack() and no longer generate open_zipped() function call.
Signed-off-by: Kang-Che Sung <explorer09@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
ix ash "kill %1" not working if CONFIG_ASH is disabled but
ash is launched by 'sh' or 'bash' name
Signed-off-by: Kang-Che Sung <explorer09@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
While at it, shorten many field and variable names.
function old new delta
unzip_main 2334 2376 +42
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
commit e19923f665 deleted clearredir()
call in shellexec():
ash: [REDIR] Remove redundant CLOEXEC calls
Upstream commit:
Now that we're marking file descriptors as CLOEXEC in savefd, we no longer
need to close them on exec or in setinputfd.
but it missed one place where we don't set CLOEXEC. Fixing this.
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This would makes all ash options indented inside "ash" in menuconfig.
It appears that menuconfig has a limit at tracking multiple dependency
lines like this (it looks like a "diamond problem" but I'm not sure if
it is):
---ASH <----------
/ \ ASH_OPTIMIZE_FOR_SIZE
!NOMMU <-*----SH_IS_ASH <----[OR] <--ASH_INTERNAL_GLOB
\ / ASH_RANDOM_SUPPORT
---BASH_IS_ASH <-- [...]
The kconfig-language document [1] states that:
> If a menu entry somehow depends on the previous entry, it can be
> made a submenu of it. First, the previous (parent) symbol must be
> part of the dependency list and then one of these two conditions
> must be true:
> - the child entry must become invisible, if the parent is set to 'n'
[BusyBox ash used to satisfy this, but no longer does]
> - the child entry must only be visible, if the parent is visible
[BusyBox ash configs actually satisfy this, but because of
"diamond" above this might not be easily detected]
So I found out a direct workaround: by making ash options explicitly
depend on !NOMMU, we can tell menuconfig that rule 2 above is satisfied
without any more tracking.
---------------------
/ \
!NOMMU <-*-----ASH <-------- \
\ \ \ ASH_OPTIMIZE_FOR_SIZE
*---SH_IS_ASH <---[OR]-[AND] <--ASH_INTERNAL_GLOB
\ / ASH_RANDOM_SUPPORT
--BASH_IS_ASH <- [...]
So all ash options would now be indented under "ash".
[1] "Documentation/kbuild/kconfig-language.txt" in Linux kernel source
Signed-off-by: Kang-Che Sung <explorer09@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Run the namelookup from the main loop so a misspelled first ntp server
name does not block everything forever.
This fixes the following situation which would block forever:
$ sudo ./busybox ntpd -dn -p foobar -p pool.ntp.org
ntpd: bad address 'foobar'
ntpd: bad address 'foobar'
ntpd: bad address 'foobar'
...
New behavior:
ntpd: bad address 'foobar'
ntpd: sending query to 137.190.2.4
ntpd: reply from 137.190.2.4: offset:-1.009775 delay:0.175550 status:0x24 strat:1 refid:0x00535047 rootdelay:0.000000 reach:0x01
ntpd: sending query to 137.190.2.4
ntpd: reply from 137.190.2.4: offset:-1.009605 delay:0.175461 status:0x24 strat:1 refid:0x00535047 rootdelay:0.000000 reach:0x03
ntpd: sending query to 137.190.2.4
ntpd: reply from 137.190.2.4: offset:-1.005327 delay:0.167027 status:0x24 strat:1 refid:0x00535047 rootdelay:0.000000 reach:0x07
ntpd: sending query to 137.190.2.4
ntpd: bad address 'foobar'
ntpd: reply from 137.190.2.4: offset:-1.046349 delay:0.248705 status:0x24 strat:1 refid:0x00535047 rootdelay:0.000000 reach:0x0f
This patch is based on Kaarle Ritvanens work.
http://lists.busybox.net/pipermail/busybox/2016-May/084197.html
function old new delta
ntpd_main 1061 1079 +18
ntp_init 556 560 +4
resolve_peer_hostname 81 75 -6
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 2/1 up/down: 22/-6) Total: 16 bytes
Signed-off-by: Kaarle Ritvanen <kaarle.ritvanen@datakunkku.fi>
Signed-off-by: Natanael Copa <ncopa@alpinelinux.org>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
archival/unzip.c: In function 'read_next_cdf':
archival/unzip.c:271:8: warning: variable 'org' set but
not used [-Wunused-but-set-variable]
off_t org;
^~~
Signed-off-by: Cristian Ionescu-Idbohrn <cristian.ionescu-idbohrn@axis.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Commit 3a45b87ac3 (modutils: support finit_module syscall) introduced
macro finit_module. But it is not defined for uClibc.
The compilation for busybox fails for MIPS with:
With uClibc, we get following build errors:
modutils/lib.a(modutils.o): In function `bb_init_module':
modutils.c:(.text.bb_init_module+0x94): undefined reference to `finit_module'
modutils.c:(.text.bb_init_module+0xa0): undefined reference to `finit_module'
We can just use syscall() without any need for the
uClibc wrappers.
Newer versions of uClibc-ng (>1.0.20) will remove the
module syscall wrappers.
Found via Buildroot autobuilders:
http://autobuild.buildroot.net/results/556/55655daef23788fb3967f801ec8b79e9bed7122b/build-end.log
function old new delta
bb_delete_module 26 32 +6
bb_init_module 90 95 +5
delete_module 37 - -37
init_module 53 - -53
------------------------------------------------------------------------------
(add/remove: 0/4 grow/shrink: 2/0 up/down: 11/-90) Total: -79 bytes
Reported-by: Rahul Bedarkar <rahul.bedarkar@imgtec.com>
Signed-off-by: Waldemar Brodkorb <wbx@openadk.org>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Mention the behavior if user selects CONFIG_SH_IS_ASH but not
CONFIG_ASH. We will be explicit that invocations like "busybox ash"
will not work for such configuration.
Also clarify help text of CONFIG_BASH_IS_* that bash compatibility in
ash is not complete. (It shouldn't be anyway - ash can't support every
bash quirk out there.)
Signed-off-by: Kang-Che Sung <explorer09@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
All other applets are listed simply by their name, no reason why
dumpleases doesn't do that.
Group all udhcpd feature options directly after it.
Put "NOT READY" into udhcpc6 item (some users actually tried to use it,
and complained).
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Commit a8c696bf09 makes ifup and ifdown
individually selectable, but forgets to update the dependency to
IFUPDOWN_UDHCPC_CMD_OPTIONS, so it is not selectable anymore.
This patch fixes the dependency by checking for IFUP or IFDOWN, instead
of the obsolete IFUPDOWN.
Also, it drops dependency on UDHCPC: udhcpc on the target system
does not have to come from the _same_ binary.
Signed-off-by: Jörg Krause <joerg.krause@embedded.rocks>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
libbb/appletlib.c:558:12: warning: 'ingroup' defined but
not used [-Wunused-function]
static int ingroup(uid_t u, gid_t g)
^~~~~~~
That function is used only if FEATURE_SUID_CONFIG is also enabled.
Signed-off-by: Cristian Ionescu-Idbohrn <cristian.ionescu-idbohrn@axis.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
The commit 'ash,hush: set exit code 127 in "sh /does/not/exist" case'
only partly implemented the dash commit '[ERROR] Allow the originator
of EXERROR to set the exit status'. This resulted in incorrect error
codes for a syntax error:
$ )
$ echo $?
0
or a redirection error for a special builtin:
$ rm -f xxx
$ eval cat <xxx
$ echo $?
0
Signed-off-by: Ron Yorston <rmy@pobox.com>
Reported-by: Martijn Dekker <martijn@inlv.org>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
musl does not like including linux/netfilter_ipv4.h
(enum / #define collision in two headers, resulting in "3 = 3"
type situation in enum definition).
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Well, in fact it works (make oldconfig throws only a warning when it sees
both SH_IS_HUSH=y and SH_IS_NONE=y), but let's be nice.
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
The same can be done for msh, but we are probably better off just deleting it
in a next versio or two.
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
They merely enable ip or ifconfig/route. There is already a way to do this
on the same menuconfig page.
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Linux kernel, starting from 2.6.19 allows ip table ids to have 32-bit values.
In order to preserve compatibility, the old 8-bit field: rtm_table is still
in use when table id is lower than 256.
Add support for the 32-bit table id (RTA_TABLE attribute) in:
- ip route print
- ip route modify
- ip rule print
- ip rule modify
Add printing of table ids to ip route.
Changes are compatible with the mainline iproute2 utilities.
These changes are required for compatibility with ConnMan, which by default
uses table ids greater than 255.
function old new delta
print_route 1588 1637 +49
do_iproute 2187 2222 +35
do_iprule 955 987 +32
print_rule 617 630 +13
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 4/0 up/down: 129/0) Total: 129 bytes
Signed-off-by: Lukasz Nowak <lnowak@tycoint.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
