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https://github.com/topjohnwu/ndk-busybox.git
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193c8c7383
Rob Landley, and others. Currently CONFIG options are defined or undefined, so we chop out code with #ifdefs, ala: #ifdef CONFIG_THING stuff(); #endif This creates a new header file, bb_config.h, which sets the CONFIG entry to 1 or 0, and lets us do: if(CONFIG_THING) stuff(); And let the compiler do dead code elimination to get rid of it. (Note: #ifdef will still work because for the 1 case it's a static const int, not a #define.)
122 lines
3.3 KiB
C
122 lines
3.3 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* Busybox main internal header file
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*
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* Based in part on code from sash, Copyright (c) 1999 by David I. Bell
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* Permission has been granted to redistribute this code under the GPL.
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*
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*/
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#ifndef _BB_INTERNAL_H_
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#define _BB_INTERNAL_H_ 1
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#include "bb_config.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdarg.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#if __GNU_LIBRARY__ < 5 && \
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!defined(__dietlibc__) && \
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!defined(_NEWLIB_VERSION)
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#error "Sorry, this libc version is not supported :("
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#endif
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#ifndef BB_EXTRA_VERSION
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#define BB_BANNER "BusyBox v" BB_VER " (" BB_BT ")"
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#else
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#define BB_BANNER "BusyBox v" BB_VER " (" BB_EXTRA_VERSION ")"
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#endif
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#ifdef DMALLOC
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#include <dmalloc.h>
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#endif
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#include <features.h>
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/* Pull in the utility routines from libbb */
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#include "libbb.h"
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enum Location {
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_BB_DIR_ROOT = 0,
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_BB_DIR_BIN,
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_BB_DIR_SBIN,
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_BB_DIR_USR_BIN,
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_BB_DIR_USR_SBIN
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};
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enum SUIDRoot {
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_BB_SUID_NEVER = 0,
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_BB_SUID_MAYBE,
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_BB_SUID_ALWAYS
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};
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struct BB_applet {
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const char *name;
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int (*main) (int argc, char **argv);
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enum Location location:4;
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enum SUIDRoot need_suid:4;
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};
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/* From busybox.c */
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extern const struct BB_applet applets[];
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/* Automagically pull in all the applet function prototypes and
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* applet usage strings. These are all of the form:
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* extern int foo_main(int argc, char **argv);
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* extern const char foo_usage[];
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* These are all autogenerated from the set of currently defined applets.
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*/
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#define PROTOTYPES
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#include "applets.h"
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#undef PROTOTYPES
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#ifdef CONFIG_FEATURE_BUFFERS_GO_ON_STACK
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#define RESERVE_CONFIG_BUFFER(buffer,len) char buffer[len]
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#define RESERVE_CONFIG_UBUFFER(buffer,len) unsigned char buffer[len]
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#define RELEASE_CONFIG_BUFFER(buffer) ((void)0)
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#else
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#ifdef CONFIG_FEATURE_BUFFERS_GO_IN_BSS
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#define RESERVE_CONFIG_BUFFER(buffer,len) static char buffer[len]
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#define RESERVE_CONFIG_UBUFFER(buffer,len) static unsigned char buffer[len]
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#define RELEASE_CONFIG_BUFFER(buffer) ((void)0)
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#else
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#define RESERVE_CONFIG_BUFFER(buffer,len) char *buffer=xmalloc(len)
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#define RESERVE_CONFIG_UBUFFER(buffer,len) unsigned char *buffer=xmalloc(len)
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#define RELEASE_CONFIG_BUFFER(buffer) free (buffer)
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#endif
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#endif
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#ifndef RB_POWER_OFF
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/* Stop system and switch power off if possible. */
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#define RB_POWER_OFF 0x4321fedc
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#endif
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/* Try to pull in PATH_MAX */
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#include <limits.h>
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/* for PATH_MAX on systems that don't have it in limits.h */
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#include <sys/param.h>
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#ifndef PATH_MAX
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#define PATH_MAX 256
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#endif
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#endif /* _BB_INTERNAL_H_ */
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