diff options
Diffstat (limited to 'package/utils/busybox/config/libbb/Config.in')
| -rw-r--r-- | package/utils/busybox/config/libbb/Config.in | 176 |
1 files changed, 62 insertions, 114 deletions
diff --git a/package/utils/busybox/config/libbb/Config.in b/package/utils/busybox/config/libbb/Config.in index 906649c5c9..e050c4a915 100644 --- a/package/utils/busybox/config/libbb/Config.in +++ b/package/utils/busybox/config/libbb/Config.in @@ -117,32 +117,73 @@ config BUSYBOX_CONFIG_SHA3_SMALL 64-bit x86: +270 bytes of code, 45% faster 32-bit x86: +450 bytes of code, 75% faster -config BUSYBOX_CONFIG_FEATURE_FAST_TOP - bool "Faster /proc scanning code (+100 bytes)" - default BUSYBOX_DEFAULT_FEATURE_FAST_TOP # all "fast or small" options default to small +config BUSYBOX_CONFIG_FEATURE_NON_POSIX_CP + bool "Non-POSIX, but safer, copying to special nodes" + default BUSYBOX_DEFAULT_FEATURE_NON_POSIX_CP 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_CONFIG_FEATURE_ETC_NETWORKS - bool "Support /etc/networks" - default BUSYBOX_DEFAULT_FEATURE_ETC_NETWORKS +config BUSYBOX_CONFIG_FEATURE_VERBOSE_CP_MESSAGE + bool "Give more precise messages when copy fails (cp, mv etc)" + default BUSYBOX_DEFAULT_FEATURE_VERBOSE_CP_MESSAGE 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_CONFIG_FEATURE_ETC_SERVICES - bool "Consult /etc/services even for well-known ports" - default BUSYBOX_DEFAULT_FEATURE_ETC_SERVICES + $ 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_CONFIG_FEATURE_USE_SENDFILE + bool "Use sendfile system call" + default BUSYBOX_DEFAULT_FEATURE_USE_SENDFILE 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. + 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_CONFIG_FEATURE_COPYBUF_KB + int "Copy buffer size, in kilobytes" + range 1 1024 + default BUSYBOX_DEFAULT_FEATURE_COPYBUF_KB + 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_CONFIG_MONOTONIC_SYSCALL + bool "Use clock_gettime(CLOCK_MONOTONIC) syscall" + default BUSYBOX_DEFAULT_MONOTONIC_SYSCALL + 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_CONFIG_IOCTL_HEX2STR_ERROR + bool "Use ioctl names rather than hex values in error messages" + default BUSYBOX_DEFAULT_IOCTL_HEX2STR_ERROR + 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_CONFIG_FEATURE_EDITING bool "Command line editing" @@ -358,96 +399,3 @@ config BUSYBOX_CONFIG_UNICODE_PRESERVE_BROKEN For example, this means that entering 'l', 's', ' ', 0xff, [Enter] at shell prompt will list file named 0xff (single char name with char value 255), not file named '?'. - -config BUSYBOX_CONFIG_FEATURE_NON_POSIX_CP - bool "Non-POSIX, but safer, copying to special nodes" - default BUSYBOX_DEFAULT_FEATURE_NON_POSIX_CP - 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_CONFIG_FEATURE_VERBOSE_CP_MESSAGE - bool "Give more precise messages when copy fails (cp, mv etc)" - default BUSYBOX_DEFAULT_FEATURE_VERBOSE_CP_MESSAGE - 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_CONFIG_FEATURE_USE_SENDFILE - bool "Use sendfile system call" - default BUSYBOX_DEFAULT_FEATURE_USE_SENDFILE - 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_CONFIG_FEATURE_COPYBUF_KB - int "Copy buffer size, in kilobytes" - range 1 1024 - default BUSYBOX_DEFAULT_FEATURE_COPYBUF_KB - 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_CONFIG_FEATURE_SKIP_ROOTFS - bool "Skip rootfs in mount table" - default BUSYBOX_DEFAULT_FEATURE_SKIP_ROOTFS - help - Ignore rootfs entry in mount table. - - 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. - - 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. - - Otherwise, choose Y. - -config BUSYBOX_CONFIG_MONOTONIC_SYSCALL - bool "Use clock_gettime(CLOCK_MONOTONIC) syscall" - default BUSYBOX_DEFAULT_MONOTONIC_SYSCALL - 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_CONFIG_IOCTL_HEX2STR_ERROR - bool "Use ioctl names rather than hex values in error messages" - default BUSYBOX_DEFAULT_IOCTL_HEX2STR_ERROR - 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_CONFIG_FEATURE_HWIB - bool "Support infiniband HW" - default BUSYBOX_DEFAULT_FEATURE_HWIB - help - Support for printing infiniband addresses in network applets. |