Just listing the vendor/product IDs is not always very helpful, so add logic
to print the manufacturer and product strings similar to the "big" usbutils
versions.
Not all devices provide sensible strings though. The usbutils version works
around this by falling back to looking up the vendor/product IDs in the hwdb
and using those strings instead, which is not an option here - Instead
simply trim() the strings for readability.
lsusb | sort
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 0bda:5539 Realtek Semiconductor Corp. Integrated_Webcam_HD
Bus 001 Device 003: ID 0a5c:5842 Broadcom Corp. 58200
Bus 001 Device 030: ID 8087:0aaa Intel Corp. Bluetooth 9460/9560 Jefferson Peak (JfP)
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 005 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 006 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 006 Device 002: ID 0bda:5487 Realtek Semiconductor Corp. Dell dock
Bus 006 Device 003: ID 0bda:5413 Realtek Semiconductor Corp. Dell dock
Bus 006 Device 004: ID 413c:b06e Dell Computer Corp. Dell dock
Bus 006 Device 005: ID 0451:8142 Texas Instruments, Inc. TUSB8041 4-Port Hub
Bus 006 Device 006: ID 0bda:402e Realtek Semiconductor Corp. USB Audio
Bus 006 Device 007: ID 413c:1010 Dell Computer Corp. USB 2.0 Hub [MTT]
Bus 006 Device 008: ID 413c:b06f Dell Computer Corp. Dell dock
Bus 006 Device 009: ID 046d:c016 Logitech, Inc. Optical Wheel Mouse
Bus 006 Device 010: ID 413c:2110 Dell Computer Corp. Dell Wired Multimedia Keyboard
Bus 006 Device 011: ID 0451:8142 Texas Instruments, Inc. TUSB8041 4-Port Hub
Bus 006 Device 012: ID 0451:3410 Texas Instruments, Inc. TUSB3410 Microcontroller
Bus 007 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 007 Device 002: ID 0bda:0487 Realtek Semiconductor Corp. Dell dock
Bus 007 Device 003: ID 0bda:0413 Realtek Semiconductor Corp. Dell dock
Bus 007 Device 004: ID 0bda:8153 Realtek Semiconductor Corp. RTL8153 Gigabit Ethernet Adapter
./busybox lsusb | sort
Bus 001 Device 001: ID 1d6b:0002 Linux 6.1.0-13-amd64 xhci-hcd xHCI Host Controller
Bus 001 Device 002: ID 0bda:5539 CNFHH53Q0324300ACA10 Integrated_Webcam_HD
Bus 001 Device 003: ID 0a5c:5842 Broadcom Corp 58200
Bus 001 Device 030: ID 8087:0aaa
Bus 002 Device 001: ID 1d6b:0003 Linux 6.1.0-13-amd64 xhci-hcd xHCI Host Controller
Bus 003 Device 001: ID 1d6b:0002 Linux 6.1.0-13-amd64 xhci-hcd xHCI Host Controller
Bus 004 Device 001: ID 1d6b:0003 Linux 6.1.0-13-amd64 xhci-hcd xHCI Host Controller
Bus 005 Device 001: ID 1d6b:0002 Linux 6.1.0-13-amd64 dummy_hcd Dummy host controller
Bus 006 Device 001: ID 1d6b:0002 Linux 6.1.0-13-amd64 xhci-hcd xHCI Host Controller
Bus 006 Device 002: ID 0bda:5487 Dell Inc. Dell dock
Bus 006 Device 003: ID 0bda:5413 Dell Inc. Dell dock
Bus 006 Device 004: ID 413c:b06e Dell dock
Bus 006 Device 005: ID 0451:8142
Bus 006 Device 006: ID 0bda:402e Generic USB Audio
Bus 006 Device 007: ID 413c:1010 USB 2.0 Hub [MTT]
Bus 006 Device 008: ID 413c:b06f Dell dock
Bus 006 Device 009: ID 046d:c016 Logitech Optical USB Mouse
Bus 006 Device 010: ID 413c:2110 Dell Dell Wired Multimedia Keyboard
Bus 006 Device 011: ID 0451:8142
Bus 006 Device 012: ID 0451:3410 Texas Instruments TUSB3410 Boot Device
Bus 007 Device 001: ID 1d6b:0003 Linux 6.1.0-13-amd64 xhci-hcd xHCI Host Controller
Bus 007 Device 002: ID 0bda:0487 Dell Inc. Dell dock
Bus 007 Device 003: ID 0bda:0413 Dell Inc. Dell dock
Bus 007 Device 004: ID 0bda:8153 Realtek USB 10/100/1000 LAN
./scripts/bloat-o-meter busybox_unstripped{_orig,}
function old new delta
trim - 101 +101
fileAction 338 431 +93
add_sysfs_prop - 70 +70
open_read_close - 54 +54
read_close - 35 +35
.rodata 3268 3294 +26
------------------------------------------------------------------------------
(add/remove: 5/0 grow/shrink: 2/0 up/down: 379/0) Total: 379 bytes
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
In kernel 5.16 special ioctls were introduced to get/set RTC parameters.
Add option to get/set parameters into busybox version of hwclock.
Implementation is similar to the one already used in linux-utils hwclock
tool.
Example of parameter get use:
$ hwclock -g 2
The RTC parameter 0x2 is set to 0x2.
$ hwclock --param-get bsm
The RTC parameter 0x2 is set to 0x2.
Example of parameter set use:
$ hwclock -p 2=1
The RTC parameter 0x2 will be set to 0x1.
$ hwclock -p bsm=2
The RTC parameter 0x2 will be set to 0x2.
function old new delta
hwclock_main 298 576 +278
.rodata 105231 105400 +169
packed_usage 34541 34576 +35
static.hwclock_longopts 60 84 +24
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 4/0 up/down: 506/0) Total: 506 bytes
Signed-off-by: Andrej Picej <andrej.picej@norik.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Various tools are Linuxish and should thus only attempted to build on
Linux only. Some features are also Linux-only.
Also, libresolv is used on all GNU platforms, notably GNU/Hurd and
GNU/kfreeBSD.
Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Only in case the FEATURE_FBSET_FANCY configuration is enabled.
function old new delta
fbset_main 733 766 +33
Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Not all options are actually implemented. In this case, return a message
and an error code to make it clear that the requested command has not
been executed.
function old new delta
.rodata 105200 105224 +24
fbset_main 747 733 -14
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/1 up/down: 24/-14) Total: 10 bytes
Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
We can now remove a separate buffer
function old new delta
seedrng_main 930 884 -46
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Also, do not test for locking errors: on Linux, they do not happen.
function old new delta
.rodata 104900 104878 -22
seedrng_main 1022 994 -28
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
gcc in fact detects this and does this transformation
when generating code - no object code changes.
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
We do not expect /dev/[u]random to be not openable/readable.
If they are, just bail out (something is obviously very wrong).
function old new delta
seedrng_main 1077 1076 -1
.rodata 104939 104929 -10
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Remove redundant includes.
We have platform specific handling in libbb.h and platform.h so we can
handle quirks in a central place.
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
Since we're passing 0 as the timeout, we don't need safe_poll. Remove
cleanup at end of program, since OS does that, which lets us simplify
control flow. Factor repeated function calls into ternary loop.
function old new delta
seedrng_main 1061 1459 +398
seed_from_file_if_exists 468 - -468
------------------------------------------------------------------------------
(add/remove: 0/1 grow/shrink: 1/0 up/down: 398/-468) Total: -70 bytes
text data bss dec hex filename
1052781 16515 1816 1071112 105808 busybox_old
1052711 16515 1816 1071042 1057c2 busybox_unstripped
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
- Avoid an xstrdup call with seed_dir.
- Compress format strings with %s arguments.
- Open /dev/urandom for add entropy ioctl rather than /dev/random, so that
/dev/random is only used for the already-sightly-flawed poll() check for
creditability.
function old new delta
seedrng_main 948 958 +10
seed_from_file_if_exists 410 417 +7
.rodata 108338 108206 -132
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 2/1 up/down: 17/-132) Total: -115 bytes
text data bss dec hex filename
975829 4227 1816 981872 efb70 busybox_old
975714 4227 1816 981757 efafd busybox_unstripped
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
- Use predefined strings where possible.
- Open /dev/random with O_RDONLY for ioctl().
function old new delta
seed_from_file_if_exists 413 410 -3
.rodata 108407 108350 -57
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/2 up/down: 0/-60) Total: -60 bytes
text data bss dec hex filename
975979 4227 1816 982022 efc06 busybox_old
975919 4227 1816 981962 efbca busybox_unstripped
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
- Remove all games with errno to further reduce code size.
- Combine error messages that don't benefit from being separated.
- Lock directory fd instead of separate file.
function old new delta
static.longopts 38 26 -12
seed_from_file_if_exists 426 413 -13
packed_usage 34519 34480 -39
.rodata 108484 108407 -77
seedrng_main 1088 1000 -88
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/5 up/down: 0/-229) Total: -229 bytes
text data bss dec hex filename
976208 4227 1816 982251 efceb busybox_old
975979 4227 1816 982022 efc06 busybox_unstripped
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
- Remove global variables and pass dfd by value, opened once instead of
twice, which shaves off some more bytes.
function old new delta
seedrng_main 1086 1088 +2
seed_dir 8 - -8
non_creditable_seed 8 - -8
lock_file 8 - -8
creditable_seed 8 - -8
seed_from_file_if_exists 456 426 -30
------------------------------------------------------------------------------
(add/remove: 0/4 grow/shrink: 1/1 up/down: 2/-62) Total: -60 bytes
text data bss dec hex filename
976236 4227 1848 982311 efd27 busybox_old
976208 4227 1816 982251 efceb busybox_unstripped
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
- Hoist bb_strtoul out of min/max to prevent quadruple evaluation.
- Don't use separate variables for boottime/realtime.
- Make use of ENABLE_FEATURE_CLEAN_UP where appropriate.
- Order hash initialization after lock taking per Bernhard's taste.
- Add comment description of theory of operation.
function old new delta
seed_from_file_if_exists 533 456 -77
seedrng_main 1218 1086 -132
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/2 up/down: 0/-209) Total: -209 bytes
text data bss dec hex filename
976445 4227 1848 982520 efdf8 busybox_old
976236 4227 1848 982311 efd27 busybox_unstripped
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
- Make extensive use of libbb.h functions, which simplify a lot of code
and reduce binary size considerably.
- Use the already existing PID_FILE_PATH variable.
function old new delta
seed_from_file_if_exists 697 533 -164
.rodata 108665 108484 -181
seedrng_main 1463 1218 -245
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/3 up/down: 0/-590) Total: -590 bytes
text data bss dec hex filename
977035 4227 1848 983110 f0046 busybox_old
976445 4227 1848 982520 efdf8 busybox_unstripped
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
The RNG can't actually be seeded from a shell script, due to the
reliance on ioctls and the fact that entropy written into the
unprivileged /dev/urandom device is not immediately mixed in, making
subsequent seed reads dangerous. For this reason, the seedrng project
provides a basic "C script" meant to be copy and pasted into projects
like Busybox and tweaked as needed: <https://git.zx2c4.com/seedrng/about/>.
The SeedRNG construction has been part of systemd's seeder since
January, and recently was added to Android, OpenRC, and Void's Runit,
with more integrations on their way depending on context. Virtually
every single Busybox-based distro I have seen seeds things in wrong,
incomplete, or otherwise dangerous way. For example, fixing this issue
in Buildroot requires first for Busybox to have this fix.
This commit imports it into Busybox and wires up the basic config. The
utility itself is tiny, and unlike the example code from the SeedRNG
project, we can re-use libbb's existing hash functions, rather than
having to ship a standalone BLAKE2s, which makes this even smaller.
function old new delta
seedrng_main - 1463 +1463
.rodata 107858 108665 +807
seed_from_file_if_exists - 697 +697
packed_usage 34414 34519 +105
static.longopts - 38 +38
static.seedrng_prefix - 26 +26
seed_dir - 8 +8
non_creditable_seed - 8 +8
lock_file - 8 +8
creditable_seed - 8 +8
applet_names 2747 2755 +8
applet_main 3192 3200 +8
------------------------------------------------------------------------------
(add/remove: 9/0 grow/shrink: 4/0 up/down: 3184/0) Total: 3184 bytes
text data bss dec hex filename
973776 4219 1816 979811 ef363 busybox_old
977035 4227 1848 983110 f0046 busybox_unstripped
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
Peter Korsgaard
Denys Vlasenko
Andrej Picej
Natanael Copa
Brandon Maier
Samuel Thibault
Dario Binacchi
Bernhard Reutner-Fischer
Jason A. Donenfeld