busybox/busybox.h
Eric Andersen 8c725e624a Patch from Larry Doolittle (with minor touchups from me so everything compiles
and works) to use the applet definitions in applets.h to autogenerate the applet
function and usage prototypes.
2000-11-30 00:27:06 +00:00

258 lines
8.6 KiB
C

/* 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.
*
*/
#ifndef _BB_INTERNAL_H_
#define _BB_INTERNAL_H_ 1
#include "Config.h"
#ifdef DMALLOC
#include "dmalloc.h"
#endif
#include <stdlib.h>
#include <stdarg.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
#include <sys/stat.h>
#include <sys/param.h>
#include <mntent.h>
#include <regex.h>
/* for the _syscall() macros */
#include <sys/syscall.h>
#include <linux/unistd.h>
/* Some useful definitions */
#define FALSE ((int) 1)
#define TRUE ((int) 0)
/* for mtab.c */
#define MTAB_GETMOUNTPT '1'
#define MTAB_GETDEVICE '2'
#define BUF_SIZE 8192
#define EXPAND_ALLOC 1024
#define isBlank(ch) (((ch) == ' ') || ((ch) == '\t'))
#define isDecimal(ch) (((ch) >= '0') && ((ch) <= '9'))
#define isOctal(ch) (((ch) >= '0') && ((ch) <= '7'))
#define isWildCard(ch) (((ch) == '*') || ((ch) == '?') || ((ch) == '['))
/* Macros for min/max. */
#ifndef MIN
#define MIN(a,b) (((a)<(b))?(a):(b))
#endif
#ifndef MAX
#define MAX(a,b) (((a)>(b))?(a):(b))
#endif
/* I don't like nested includes, but the string and io functions are used
* too often
*/
#include <stdio.h>
#if !defined(NO_STRING_H) || defined(STDC_HEADERS)
# include <string.h>
# if !defined(STDC_HEADERS) && !defined(NO_MEMORY_H) && !defined(__GNUC__)
# include <memory.h>
# endif
# define memzero(s, n) memset ((void *)(s), 0, (n))
#else
# include <strings.h>
# define strchr index
# define strrchr rindex
# define memcpy(d, s, n) bcopy((s), (d), (n))
# define memcmp(s1, s2, n) bcmp((s1), (s2), (n))
# define memzero(s, n) bzero((s), (n))
#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;
const char* usage;
};
/* 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.
*/
#define PROTOTYPES
#include "applets.h"
#undef PROTOTYPES
extern const char *applet_name;
extern int applet_name_compare(const void *x, const void *y);
extern void usage(const char *usage) __attribute__ ((noreturn));
extern void errorMsg(const char *s, ...) __attribute__ ((format (printf, 1, 2)));
extern void fatalError(const char *s, ...) __attribute__ ((noreturn, format (printf, 1, 2)));
extern void perrorMsg(const char *s, ...) __attribute__ ((format (printf, 1, 2)));
extern void fatalPerror(const char *s, ...) __attribute__ ((noreturn, format (printf, 1, 2)));
const char *modeString(int mode);
const char *timeString(time_t timeVal);
int isDirectory(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 copyFile(const char *srcName, const char *destName,
int setModes, int followLinks, int forceFlag);
int copySubFile(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);
int fullWrite(int fd, const char *buf, int len);
int fullRead(int fd, char *buf, int len);
int recursiveAction(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 createPath (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 *findMountPoint(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 getNum (const char *cp);
extern pid_t* findPidByName( 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 void xregcomp(regex_t *preg, const char *regex, int cflags);
extern FILE *wfopen(const char *path, const char *mode);
extern FILE *xfopen(const char *path, const char *mode);
#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);
/* 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(char *name);
extern long my_getgrnam(char *name);
extern void my_getpwuid(char *name, long uid);
extern void my_getgrgid(char *group, long gid);
extern long my_getpwnamegid(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);
#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
#endif /* _BB_INTERNAL_H_ */