X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=include%2Fbusybox.h;h=6a003d544497ee6e8376abfd125fba9cd26b6514;hb=2e4ef38743c3d4aef109b5cc04429ec1f0e2f6c8;hp=53d22115a65c16eccdb9d12ec27786a0cd6705ed;hpb=4142d4dc661c85b731c21b3296a04d1c5b5c3367;p=oweals%2Fbusybox.git diff --git a/include/busybox.h b/include/busybox.h index 53d22115a..6a003d544 100644 --- a/include/busybox.h +++ b/include/busybox.h @@ -1,250 +1,58 @@ /* vi: set sw=4 ts=4: */ /* - * Busybox main internal header file - * - * - * 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 - * - * Based in part on code from sash, Copyright (c) 1999 by David I. Bell - * Permission has been granted to redistribute this code under the GPL. - * + * Licensed under GPLv2 or later, see file LICENSE in this source tree. */ -#ifndef _BB_INTERNAL_H_ -#define _BB_INTERNAL_H_ 1 - -#include "Config.h" - -#include -#include -#include -#include - -#ifdef DMALLOC -#include "dmalloc.h" +#ifndef BUSYBOX_H +#define BUSYBOX_H 1 + +#include "libbb.h" +/* BB_DIR_foo and BB_SUID_bar constants: */ +#include "applet_metadata.h" + +PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN + +/* Defined in appletlib.c (by including generated applet_tables.h) */ +/* Keep in sync with applets/applet_tables.c! */ +extern const char applet_names[] ALIGN1; +extern int (*const applet_main[])(int argc, char **argv); +extern const uint8_t applet_flags[] ALIGN1; +extern const uint8_t applet_suid[] ALIGN1; +extern const uint8_t applet_install_loc[] ALIGN1; + +#if ENABLE_FEATURE_PREFER_APPLETS \ + || ENABLE_FEATURE_SH_STANDALONE \ + || ENABLE_FEATURE_SH_NOFORK +# define APPLET_IS_NOFORK(i) (applet_flags[(i)/4] & (1 << (2 * ((i)%4)))) +# define APPLET_IS_NOEXEC(i) (applet_flags[(i)/4] & (1 << ((2 * ((i)%4))+1))) +#else +# define APPLET_IS_NOFORK(i) 0 +# define APPLET_IS_NOEXEC(i) 0 #endif -/* Some useful definitions */ -#define FALSE ((int) 0) -#define TRUE ((int) 1) -#define SKIP ((int) 2) - -/* for mtab.c */ -#define MTAB_GETMOUNTPT '1' -#define MTAB_GETDEVICE '2' - -#define BUF_SIZE 8192 -#define EXPAND_ALLOC 1024 - -static inline int is_decimal(ch) { return ((ch >= '0') && (ch <= '9')); } -static inline int is_octal(ch) { return ((ch >= '0') && (ch <= '7')); } - -/* Macros for min/max. */ -#ifndef MIN -#define MIN(a,b) (((a)<(b))?(a):(b)) +#if ENABLE_FEATURE_SUID +# define APPLET_SUID(i) ((applet_suid[(i)/4] >> (2 * ((i)%4)) & 3)) #endif -#ifndef MAX -#define MAX(a,b) (((a)>(b))?(a):(b)) +#if ENABLE_FEATURE_INSTALLER +#define APPLET_INSTALL_LOC(i) ({ \ + unsigned v = (i); \ + if (v & 1) v = applet_install_loc[v/2] >> 4; \ + else v = applet_install_loc[v/2] & 0xf; \ + v; }) #endif -enum Location { - _BB_DIR_ROOT = 0, - _BB_DIR_BIN, - _BB_DIR_SBIN, - _BB_DIR_USR_BIN, - _BB_DIR_USR_SBIN -}; - -struct BB_applet { - const char* name; - int (*main)(int argc, char** argv); - enum Location location; -}; -/* From busybox.c */ -extern const struct BB_applet applets[]; - -/* Automagically pull in all the applet function prototypes and - * applet usage strings. These are all of the form: - * extern int foo_main(int argc, char **argv); - * extern const char foo_usage[]; - * These are all autogenerated from the set of currently defined applets. +/* Length of these names has effect on size of libbusybox + * and "individual" binaries. Keep them short. */ -#define PROTOTYPES -#include "applets.h" -#undef PROTOTYPES - -extern const char *applet_name; - -extern void show_usage(void) __attribute__ ((noreturn)); -extern void error_msg(const char *s, ...); -extern void error_msg_and_die(const char *s, ...) __attribute__ ((noreturn)); -extern void perror_msg(const char *s, ...); -extern void perror_msg_and_die(const char *s, ...) __attribute__ ((noreturn)); - -const char *mode_string(int mode); -const char *time_string(time_t timeVal); -int is_directory(const char *name, const int followLinks, struct stat *statBuf); -int isDevice(const char *name); - -typedef struct ino_dev_hash_bucket_struct { - struct ino_dev_hash_bucket_struct *next; - ino_t ino; - dev_t dev; - char name[1]; -} ino_dev_hashtable_bucket_t; -int is_in_ino_dev_hashtable(const struct stat *statbuf, char **name); -void add_to_ino_dev_hashtable(const struct stat *statbuf, const char *name); -void reset_ino_dev_hashtable(void); - -int copy_file(const char *srcName, const char *destName, - int setModes, int followLinks, int forceFlag); -int copy_file_chunk(int srcFd, int dstFd, size_t remaining); -char *buildName(const char *dirName, const char *fileName); -int makeString(int argc, const char **argv, char *buf, int bufLen); -char *getChunk(int size); -char *chunkstrdup(const char *str); -void freeChunks(void); -ssize_t safe_read(int fd, void *buf, size_t count); -int full_write(int fd, const char *buf, int len); -int full_read(int fd, char *buf, int len); -int recursive_action(const char *fileName, int recurse, int followLinks, int depthFirst, - int (*fileAction) (const char *fileName, struct stat* statbuf, void* userData), - int (*dirAction) (const char *fileName, struct stat* statbuf, void* userData), - void* userData); - -extern int create_path (const char *name, int mode); -extern int parse_mode( const char* s, mode_t* theMode); - -extern int get_kernel_revision(void); - -extern int get_console_fd(char* tty_name); -extern struct mntent *find_mount_point(const char *name, const char *table); -extern void write_mtab(char* blockDevice, char* directory, - char* filesystemType, long flags, char* string_flags); -extern void erase_mtab(const char * name); -extern void mtab_read(void); -extern char *mtab_first(void **iter); -extern char *mtab_next(void **iter); -extern char *mtab_getinfo(const char *match, const char which); -extern int check_wildcard_match(const char* text, const char* pattern); -extern long atoi_w_units (const char *cp); -extern pid_t* find_pid_by_name( char* pidName); -extern int find_real_root_device_name(char* name); -extern char *get_line_from_file(FILE *file); -extern void print_file(FILE *file); -extern int print_file_by_name(char *filename); -extern char process_escape_sequence(char **ptr); -extern char *get_last_path_component(char *path); -extern FILE *wfopen(const char *path, const char *mode); -extern FILE *xfopen(const char *path, const char *mode); -extern void chomp(char *s); -extern struct BB_applet *find_applet_by_name(const char *name); -void run_applet_by_name(const char *name, int argc, char **argv); - -#ifndef DMALLOC -extern void *xmalloc (size_t size); -extern void *xrealloc(void *old, size_t size); -extern void *xcalloc(size_t nmemb, size_t size); -extern char *xstrdup (const char *s); -#endif -extern char *xstrndup (const char *s, int n); -extern char * safe_strncpy(char *dst, const char *src, size_t size); - -struct suffix_mult { - char *suffix; - int mult; -}; - -extern unsigned long parse_number(const char *numstr, - const struct suffix_mult *suffixes); - - -/* These parse entries in /etc/passwd and /etc/group. This is desirable - * for BusyBox since we want to avoid using the glibc NSS stuff, which - * increases target size and is often not needed embedded systems. */ -extern long my_getpwnam(const char *name); -extern long my_getgrnam(const char *name); -extern void my_getpwuid(char *name, long uid); -extern void my_getgrgid(char *group, long gid); -extern long my_getpwnamegid(const char *name); - -extern int device_open(char *device, int mode); - -#if defined BB_FEATURE_MOUNT_LOOP -extern int del_loop(const char *device); -extern int set_loop(const char *device, const char *file, int offset, int *loopro); -extern char *find_unused_loop_device (void); -#endif - - -#if (__GLIBC__ < 2) && (defined BB_SYSLOGD || defined BB_INIT) -extern int vdprintf(int d, const char *format, va_list ap); -#endif - -#if defined BB_NFSMOUNT -int nfsmount(const char *spec, const char *node, int *flags, - char **extra_opts, char **mount_opts, int running_bg); +#if ENABLE_BUILD_LIBBUSYBOX +#if ENABLE_FEATURE_SHARED_BUSYBOX +int lbb_main(char **argv) EXTERNALLY_VISIBLE; +#else +int lbb_main(char **argv); #endif - -#ifndef RB_POWER_OFF -/* Stop system and switch power off if possible. */ -#define RB_POWER_OFF 0x4321fedc #endif -/* Include our own copy of struct sysinfo to avoid binary compatability - * problems with Linux 2.4, which changed things. Grumble, grumble. */ -struct sysinfo { - long uptime; /* Seconds since boot */ - unsigned long loads[3]; /* 1, 5, and 15 minute load averages */ - unsigned long totalram; /* Total usable main memory size */ - unsigned long freeram; /* Available memory size */ - unsigned long sharedram; /* Amount of shared memory */ - unsigned long bufferram; /* Memory used by buffers */ - unsigned long totalswap; /* Total swap space size */ - unsigned long freeswap; /* swap space still available */ - unsigned short procs; /* Number of current processes */ - unsigned long totalhigh; /* Total high memory size */ - unsigned long freehigh; /* Available high memory size */ - unsigned int mem_unit; /* Memory unit size in bytes */ - char _f[20-2*sizeof(long)-sizeof(int)]; /* Padding: libc5 uses this.. */ -}; -extern int sysinfo (struct sysinfo* info); - -/* Bit map related macros -- libc5 doens't provide these... sigh. */ -#ifndef setbit -#define NBBY CHAR_BIT -#define setbit(a,i) ((a)[(i)/NBBY] |= 1<<((i)%NBBY)) -#define clrbit(a,i) ((a)[(i)/NBBY] &= ~(1<<((i)%NBBY))) -#define isset(a,i) ((a)[(i)/NBBY] & (1<<((i)%NBBY))) -#define isclr(a,i) (((a)[(i)/NBBY] & (1<<((i)%NBBY))) == 0) -#endif +POP_SAVED_FUNCTION_VISIBILITY -#ifdef BB_FEATURE_HUMAN_READABLE -const char *format(unsigned long val, unsigned long hr); -#define KILOBYTE 1024 -#define MEGABYTE (KILOBYTE*1024) -#define GIGABYTE (MEGABYTE*1024) #endif - -#ifdef BB_FEATURE_BUFFERS_GO_ON_STACK -#define RESERVE_BB_BUFFER(buffer,len) char buffer[len] -#define RESERVE_BB_UBUFFER(buffer,len) unsigned char buffer[len] -#else -#define RESERVE_BB_BUFFER(buffer,len) char *buffer=xmalloc(len) -#define RESERVE_BB_UBUFFER(buffer,len) unsigned char *buffer=xmalloc(len) -#endif - -#endif /* _BB_INTERNAL_H_ */