mirror of
https://github.com/topjohnwu/ndk-busybox.git
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254 lines
8.5 KiB
C
254 lines
8.5 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 "Config.h"
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#include <stdio.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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#ifdef DMALLOC
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#include "dmalloc.h"
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#endif
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/* Some useful definitions */
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#define FALSE ((int) 0)
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#define TRUE ((int) 1)
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#define SKIP ((int) 2)
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/* for mtab.c */
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#define MTAB_GETMOUNTPT '1'
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#define MTAB_GETDEVICE '2'
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#define BUF_SIZE 8192
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#define EXPAND_ALLOC 1024
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static inline int is_decimal(ch) { return ((ch >= '0') && (ch <= '9')); }
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static inline int is_octal(ch) { return ((ch >= '0') && (ch <= '7')); }
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/* Macros for min/max. */
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#ifndef MIN
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#define MIN(a,b) (((a)<(b))?(a):(b))
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#endif
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#ifndef MAX
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#define MAX(a,b) (((a)>(b))?(a):(b))
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#endif
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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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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;
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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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extern const char *applet_name;
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extern void show_usage(void) __attribute__ ((noreturn));
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extern void error_msg(const char *s, ...);
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extern void error_msg_and_die(const char *s, ...) __attribute__ ((noreturn));
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extern void perror_msg(const char *s, ...);
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extern void perror_msg_and_die(const char *s, ...) __attribute__ ((noreturn));
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const char *mode_string(int mode);
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const char *time_string(time_t timeVal);
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int is_directory(const char *name, const int followLinks, struct stat *statBuf);
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int isDevice(const char *name);
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typedef struct ino_dev_hash_bucket_struct {
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struct ino_dev_hash_bucket_struct *next;
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ino_t ino;
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dev_t dev;
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char name[1];
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} ino_dev_hashtable_bucket_t;
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int is_in_ino_dev_hashtable(const struct stat *statbuf, char **name);
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void add_to_ino_dev_hashtable(const struct stat *statbuf, const char *name);
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void reset_ino_dev_hashtable(void);
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int copy_file(const char *srcName, const char *destName,
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int setModes, int followLinks, int forceFlag);
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int copy_file_chunk(int srcFd, int dstFd, size_t remaining);
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char *buildName(const char *dirName, const char *fileName);
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int makeString(int argc, const char **argv, char *buf, int bufLen);
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char *getChunk(int size);
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char *chunkstrdup(const char *str);
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void freeChunks(void);
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ssize_t safe_read(int fd, void *buf, size_t count);
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int full_write(int fd, const char *buf, int len);
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int full_read(int fd, char *buf, int len);
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int recursive_action(const char *fileName, int recurse, int followLinks, int depthFirst,
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int (*fileAction) (const char *fileName, struct stat* statbuf, void* userData),
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int (*dirAction) (const char *fileName, struct stat* statbuf, void* userData),
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void* userData);
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extern int create_path (const char *name, int mode);
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extern int parse_mode( const char* s, mode_t* theMode);
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extern int get_kernel_revision(void);
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extern int get_console_fd(char* tty_name);
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extern struct mntent *find_mount_point(const char *name, const char *table);
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extern void write_mtab(char* blockDevice, char* directory,
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char* filesystemType, long flags, char* string_flags);
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extern void erase_mtab(const char * name);
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extern void mtab_read(void);
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extern char *mtab_first(void **iter);
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extern char *mtab_next(void **iter);
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extern char *mtab_getinfo(const char *match, const char which);
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extern int check_wildcard_match(const char* text, const char* pattern);
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extern long atoi_w_units (const char *cp);
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extern pid_t* find_pid_by_name( char* pidName);
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extern int find_real_root_device_name(char* name);
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extern char *get_line_from_file(FILE *file);
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extern void print_file(FILE *file);
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extern int print_file_by_name(char *filename);
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extern char process_escape_sequence(char **ptr);
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extern char *get_last_path_component(char *path);
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extern FILE *wfopen(const char *path, const char *mode);
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extern FILE *xfopen(const char *path, const char *mode);
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extern void chomp(char *s);
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extern void trim(char *s);
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extern struct BB_applet *find_applet_by_name(const char *name);
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void run_applet_by_name(const char *name, int argc, char **argv);
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#ifndef DMALLOC
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extern void *xmalloc (size_t size);
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extern void *xrealloc(void *old, size_t size);
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extern void *xcalloc(size_t nmemb, size_t size);
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extern char *xstrdup (const char *s);
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#endif
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extern char *xstrndup (const char *s, int n);
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extern char * safe_strncpy(char *dst, const char *src, size_t size);
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struct suffix_mult {
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char *suffix;
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int mult;
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};
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extern unsigned long parse_number(const char *numstr,
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const struct suffix_mult *suffixes);
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/* These parse entries in /etc/passwd and /etc/group. This is desirable
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* for BusyBox since we want to avoid using the glibc NSS stuff, which
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* increases target size and is often not needed embedded systems. */
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extern long my_getpwnam(const char *name);
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extern long my_getgrnam(const char *name);
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extern void my_getpwuid(char *name, long uid);
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extern void my_getgrgid(char *group, long gid);
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extern long my_getpwnamegid(const char *name);
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extern int device_open(char *device, int mode);
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#if defined BB_FEATURE_MOUNT_LOOP
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extern int del_loop(const char *device);
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extern int set_loop(const char *device, const char *file, int offset, int *loopro);
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extern char *find_unused_loop_device (void);
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#endif
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#if (__GLIBC__ < 2) && (defined BB_SYSLOGD || defined BB_INIT)
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extern int vdprintf(int d, const char *format, va_list ap);
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#endif
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#if defined BB_NFSMOUNT
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int nfsmount(const char *spec, const char *node, int *flags,
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char **extra_opts, char **mount_opts, int running_bg);
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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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/* Include our own copy of struct sysinfo to avoid binary compatability
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* problems with Linux 2.4, which changed things. Grumble, grumble. */
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struct sysinfo {
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long uptime; /* Seconds since boot */
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unsigned long loads[3]; /* 1, 5, and 15 minute load averages */
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unsigned long totalram; /* Total usable main memory size */
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unsigned long freeram; /* Available memory size */
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unsigned long sharedram; /* Amount of shared memory */
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unsigned long bufferram; /* Memory used by buffers */
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unsigned long totalswap; /* Total swap space size */
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unsigned long freeswap; /* swap space still available */
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unsigned short procs; /* Number of current processes */
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unsigned long totalhigh; /* Total high memory size */
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unsigned long freehigh; /* Available high memory size */
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unsigned int mem_unit; /* Memory unit size in bytes */
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char _f[20-2*sizeof(long)-sizeof(int)]; /* Padding: libc5 uses this.. */
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};
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extern int sysinfo (struct sysinfo* info);
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/* Bit map related macros -- libc5 doens't provide these... sigh. */
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#ifndef setbit
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#define NBBY CHAR_BIT
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#define setbit(a,i) ((a)[(i)/NBBY] |= 1<<((i)%NBBY))
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#define clrbit(a,i) ((a)[(i)/NBBY] &= ~(1<<((i)%NBBY)))
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#define isset(a,i) ((a)[(i)/NBBY] & (1<<((i)%NBBY)))
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#define isclr(a,i) (((a)[(i)/NBBY] & (1<<((i)%NBBY))) == 0)
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#endif
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#ifdef BB_FEATURE_HUMAN_READABLE
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const char *make_human_readable_str(unsigned long val, unsigned long hr);
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#endif
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enum {
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KILOBYTE = 1024,
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MEGABYTE = (KILOBYTE*1024),
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GIGABYTE = (MEGABYTE*1024)
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};
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#ifdef BB_FEATURE_BUFFERS_GO_ON_STACK
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#define RESERVE_BB_BUFFER(buffer,len) char buffer[len]
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#define RESERVE_BB_UBUFFER(buffer,len) unsigned char buffer[len]
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#else
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#define RESERVE_BB_BUFFER(buffer,len) char *buffer=xmalloc(len)
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#define RESERVE_BB_UBUFFER(buffer,len) unsigned char *buffer=xmalloc(len)
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#endif
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#endif /* _BB_INTERNAL_H_ */
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