diff options
| -rw-r--r-- | Config.h | 55 | ||||
| -rw-r--r-- | sh.c | 39 |
2 files changed, 94 insertions, 0 deletions
@@ -144,6 +144,41 @@ // pretty/useful). // // +// If you enabled BB_SH above, you may select one of the following shells. +// You can only select ONE of the following shells. Sorry. +// +// lash is the very smallest shell (adds just 10k) and it is quite usable as a +// command prompt, but it is not suitable for any but the most trivial scripting +// (such as an initrd that calls insmod a few times) since it does not +// understand Bourne shell grammer. It does handle pipes, redirects, and job +// control though. Adding in command editing makes it very nice lightweight +// command prompt. +//#define BB_FEATURE_LASH +// +// hush is also quite small (just 18k) and it has very complete Bourne shell +// grammer. It handles if/then/else/fi just fine, but doesn't handle loops +// like for/do/done or case/esac and such. It also currently has a problem +// with job control. +//#define BB_FEATURE_HUSH +// +// msh: The minix shell (adds just 30k) is quite complete and handles things +// like for/do/done, case/esac and all the things you expect a Bourne shell to +// do. It is not always pedantically correct about Bourne shell grammer (try +// running the shell testscript "tests/sh.testcases" on it and compare vs +// bash) but for most things it works quite well. It also uses only vfork, so +// it can be used on uClinux systems. This was only recently added, so there is +// still room to shrink it further... +#define BB_FEATURE_MSH +// +// ash: This adds about 60k in the default configuration and is the most +// complete and most pedantically correct shell included with busybox. This +// shell was also recently added, and several people (mainly Vladimir and Erik) +// have been working on it. There are a number of configurable things at the +// top of ash.c as well, so check those out if you want to tweak things. The +// Posix math support is currently disabled (that bit of code was horrible) but +// will be restored for the next BusyBox release. +//#define BB_FEATURE_ASH +// // BusyBox will, by default, malloc space for its buffers. This costs code // size for the call to xmalloc. You can use the following feature to have // them put on the stack. For some very small machines with limited stack @@ -391,6 +426,26 @@ #undef BB_FEATURE_COMMAND_USERNAME_COMPLETION #undef BB_FEATURE_SH_FANCY_PROMPT #endif + #if ! defined BB_FEATURE_LASH && ! defined BB_FEATURE_HUSH && ! defined BB_FEATURE_MSH && ! defined BB_FEATURE_ASH + #define BB_FEATURE_MSH + #endif + #if defined BB_FEATURE_ASH && (defined BB_FEATURE_LASH || defined BB_FEATURE_HUSH || defined BB_FEATURE_MSH) + #undef BB_FEATURE_LASH + #undef BB_FEATURE_HUSH + #undef BB_FEATURE_MSH + #elif defined BB_FEATURE_MSH && (defined BB_FEATURE_LASH || defined BB_FEATURE_HUSH || defined BB_FEATURE_MSH) + #undef BB_FEATURE_LASH + #undef BB_FEATURE_HUSH + #undef BB_FEATURE_ASH + #elif defined BB_FEATURE_HUSH && (defined BB_FEATURE_LASH || defined BB_FEATURE_HUSH || defined BB_FEATURE_MSH) + #undef BB_FEATURE_LASH + #undef BB_FEATURE_MSH + #undef BB_FEATURE_ASH + #elif defined BB_FEATURE_LASH && (defined BB_FEATURE_LASH || defined BB_FEATURE_HUSH || defined BB_FEATURE_MSH) + #undef BB_FEATURE_HUSH + #undef BB_FEATURE_MSH + #undef BB_FEATURE_ASH + #endif #else #undef BB_FEATURE_SH_APPLETS_ALWAYS_WIN #undef BB_FEATURE_SH_STANDALONE_SHELL @@ -0,0 +1,39 @@ +/* vi: set sw=4 ts=4: */ +/* + * Shell wrapper file for busybox + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +#include "busybox.h" + +#if defined BB_FEATURE_ASH +#include "ash.c" +#elif defined BB_FEATURE_MSH +#include "msh.c" +#elif defined BB_FEATURE_HUSH +#include "hush.c" +#elif defined BB_FEATURE_LASH +#include "lash.c" +#endif + +/* +Local Variables: +c-file-style: "linux" +c-basic-offset: 4 +tab-width: 4 +End: +*/ |