diff options
Diffstat (limited to 'package/busybox/config/libbb/Config.in')
| -rw-r--r-- | package/busybox/config/libbb/Config.in | 224 |
1 files changed, 110 insertions, 114 deletions
diff --git a/package/busybox/config/libbb/Config.in b/package/busybox/config/libbb/Config.in index 1dd61c62e..66c135ec6 100644 --- a/package/busybox/config/libbb/Config.in +++ b/package/busybox/config/libbb/Config.in @@ -98,51 +98,118 @@ config BUSYBOX_MD5_SMALL default 1 # all "fast or small" options default to small range 0 3 help - Trade binary size versus speed for the md5sum algorithm. + Trade binary size versus speed for the md5 algorithm. Approximate values running uClibc and hashing linux-2.4.4.tar.bz2 were: - value user times (sec) text size (386) - 0 (fastest) 1.1 6144 - 1 1.4 5392 - 2 3.0 5088 - 3 (smallest) 5.1 4912 + value user times (sec) text size (386) + 0 (fastest) 1.1 6144 + 1 1.4 5392 + 2 3.0 5088 + 3 (smallest) 5.1 4912 + +config BUSYBOX_SHA1_SMALL + int "SHA1: Trade bytes for speed (0:fast, 3:slow)" + default 3 # all "fast or small" options default to small + range 0 3 + help + Trade binary size versus speed for the sha1 algorithm. + With FEATURE_COPYBUF_KB=64: + throughput MB/s size of sha1_process_block64 + value 486 x86-64 486 x86-64 + 0 440 485 3481 3502 + 1 265 265 641 696 + 2,3 220 210 342 364 + +config BUSYBOX_SHA1_HWACCEL + bool "SHA1: Use hardware accelerated instructions if possible" + default y + help + On x86, this adds ~590 bytes of code. Throughput + is about twice as fast as fully-unrolled generic code. + +config BUSYBOX_SHA256_HWACCEL + bool "SHA256: Use hardware accelerated instructions if possible" + default y + help + On x86, this adds ~1k bytes of code. config BUSYBOX_SHA3_SMALL int "SHA3: Trade bytes for speed (0:fast, 1:slow)" default 1 # all "fast or small" options default to small range 0 1 help - Trade binary size versus speed for the sha3sum algorithm. + Trade binary size versus speed for the sha3 algorithm. SHA3_SMALL=0 compared to SHA3_SMALL=1 (approximate): 64-bit x86: +270 bytes of code, 45% faster 32-bit x86: +450 bytes of code, 75% faster -config BUSYBOX_FEATURE_FAST_TOP - bool "Faster /proc scanning code (+100 bytes)" - default n # all "fast or small" options default to small +config BUSYBOX_FEATURE_NON_POSIX_CP + bool "Non-POSIX, but safer, copying to special nodes" + default y help - This option makes top and ps ~20% faster (or 20% less CPU hungry), - but code size is slightly bigger. + With this option, "cp file symlink" will delete symlink + and create a regular file. This does not conform to POSIX, + but prevents a symlink attack. + Similarly, "cp file device" will not send file's data + to the device. (To do that, use "cat file >device") -config BUSYBOX_FEATURE_ETC_NETWORKS - bool "Support /etc/networks" +config BUSYBOX_FEATURE_VERBOSE_CP_MESSAGE + bool "Give more precise messages when copy fails (cp, mv etc)" default n help - Enable support for network names in /etc/networks. This is - a rarely used feature which allows you to use names - instead of IP/mask pairs in route command. + Error messages with this feature enabled: -config BUSYBOX_FEATURE_ETC_SERVICES - bool "Consult /etc/services even for well-known ports" - default n + $ cp file /does_not_exist/file + cp: cannot create '/does_not_exist/file': Path does not exist + $ cp file /vmlinuz/file + cp: cannot stat '/vmlinuz/file': Path has non-directory component + + If this feature is not enabled, they will be, respectively: + + cp: cannot create '/does_not_exist/file': No such file or directory + cp: cannot stat '/vmlinuz/file': Not a directory + + This will cost you ~60 bytes. + +config BUSYBOX_FEATURE_USE_SENDFILE + bool "Use sendfile system call" + default y + help + When enabled, busybox will use the kernel sendfile() function + instead of read/write loops to copy data between file descriptors + (for example, cp command does this a lot). + If sendfile() doesn't work, copying code falls back to read/write + loop. sendfile() was originally implemented for faster I/O + from files to sockets, but since Linux 2.6.33 it was extended + to work for many more file types. + +config BUSYBOX_FEATURE_COPYBUF_KB + int "Copy buffer size, in kilobytes" + range 1 1024 + default 4 + help + Size of buffer used by cp, mv, install, wget etc. + Buffers which are 4 kb or less will be allocated on stack. + Bigger buffers will be allocated with mmap, with fallback to 4 kb + stack buffer if mmap fails. + +config BUSYBOX_MONOTONIC_SYSCALL + bool "Use clock_gettime(CLOCK_MONOTONIC) syscall" + default y + help + Use clock_gettime(CLOCK_MONOTONIC) syscall for measuring + time intervals (time, ping, traceroute etc need this). + Probably requires Linux 2.6+. If not selected, gettimeofday + will be used instead (which gives wrong results if date/time + is reset). + +config BUSYBOX_IOCTL_HEX2STR_ERROR + bool "Use ioctl names rather than hex values in error messages" + default y help - Look up e.g. "telnet" and "http" in /etc/services file - instead of assuming ports 23 and 80. - This is almost never necessary (everybody uses standard ports), - and it makes sense to avoid reading this file. - If you disable this option, in the cases where port is explicitly - specified as a service name (e.g. "telnet HOST PORTNAME"), - it will still be looked up in /etc/services. + Use ioctl names rather than hex values in error messages + (e.g. VT_DISALLOCATE rather than 0x5608). If disabled this + saves about 1400 bytes. config BUSYBOX_FEATURE_EDITING bool "Command line editing" @@ -359,95 +426,24 @@ config BUSYBOX_UNICODE_PRESERVE_BROKEN at shell prompt will list file named 0xff (single char name with char value 255), not file named '?'. -config BUSYBOX_FEATURE_NON_POSIX_CP - bool "Non-POSIX, but safer, copying to special nodes" - default y - help - With this option, "cp file symlink" will delete symlink - and create a regular file. This does not conform to POSIX, - but prevents a symlink attack. - Similarly, "cp file device" will not send file's data - to the device. (To do that, use "cat file >device") - -config BUSYBOX_FEATURE_VERBOSE_CP_MESSAGE - bool "Give more precise messages when copy fails (cp, mv etc)" - default n - help - Error messages with this feature enabled: - - $ cp file /does_not_exist/file - cp: cannot create '/does_not_exist/file': Path does not exist - $ cp file /vmlinuz/file - cp: cannot stat '/vmlinuz/file': Path has non-directory component - - If this feature is not enabled, they will be, respectively: - - cp: cannot create '/does_not_exist/file': No such file or directory - cp: cannot stat '/vmlinuz/file': Not a directory - - This will cost you ~60 bytes. - -config BUSYBOX_FEATURE_USE_SENDFILE - bool "Use sendfile system call" - default y - help - When enabled, busybox will use the kernel sendfile() function - instead of read/write loops to copy data between file descriptors - (for example, cp command does this a lot). - If sendfile() doesn't work, copying code falls back to read/write - loop. sendfile() was originally implemented for faster I/O - from files to sockets, but since Linux 2.6.33 it was extended - to work for many more file types. - -config BUSYBOX_FEATURE_COPYBUF_KB - int "Copy buffer size, in kilobytes" - range 1 1024 - default 4 - help - Size of buffer used by cp, mv, install, wget etc. - Buffers which are 4 kb or less will be allocated on stack. - Bigger buffers will be allocated with mmap, with fallback to 4 kb - stack buffer if mmap fails. - -config BUSYBOX_FEATURE_SKIP_ROOTFS - bool "Skip rootfs in mount table" - default y +choice + prompt "Use LOOP_CONFIGURE for losetup and loop mounts" + default BUSYBOX_TRY_LOOP_CONFIGURE help - Ignore rootfs entry in mount table. + LOOP_CONFIGURE is added to Linux 5.8 + https://lwn.net/Articles/820408/ + This allows userspace to completely setup a loop device with a single + ioctl, removing the in-between state where the device can be partially + configured - eg the loop device has a backing file associated with it, + but is reading from the wrong offset. - In Linux, kernel has a special filesystem, rootfs, which is initially - mounted on /. It contains initramfs data, if kernel is configured - to have one. Usually, another file system is mounted over / early - in boot process, and therefore most tools which manipulate - mount table, such as df, will skip rootfs entry. +config BUSYBOX_LOOP_CONFIGURE + bool "use LOOP_CONFIGURE, needs kernel >= 5.8" - However, some systems do not mount anything on /. - If you need to configure busybox for one of these systems, - you may find it useful to turn this option off to make df show - initramfs statistics. +config BUSYBOX_NO_LOOP_CONFIGURE + bool "use LOOP_SET_FD + LOOP_SET_STATUS" - Otherwise, choose Y. +config BUSYBOX_TRY_LOOP_CONFIGURE + bool "try LOOP_CONFIGURE, fall back to LOOP_SET_FD + LOOP_SET_STATUS" -config BUSYBOX_MONOTONIC_SYSCALL - bool "Use clock_gettime(CLOCK_MONOTONIC) syscall" - default y - help - Use clock_gettime(CLOCK_MONOTONIC) syscall for measuring - time intervals (time, ping, traceroute etc need this). - Probably requires Linux 2.6+. If not selected, gettimeofday - will be used instead (which gives wrong results if date/time - is reset). - -config BUSYBOX_IOCTL_HEX2STR_ERROR - bool "Use ioctl names rather than hex values in error messages" - default y - help - Use ioctl names rather than hex values in error messages - (e.g. VT_DISALLOCATE rather than 0x5608). If disabled this - saves about 1400 bytes. - -config BUSYBOX_FEATURE_HWIB - bool "Support infiniband HW" - default y - help - Support for printing infiniband addresses in network applets. +endchoice |