aboutsummaryrefslogtreecommitdiff
path: root/libbb/libbb.h
blob: c47a6689e241795c7515cd1f9d0a3568026d4d1e (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
/* 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	__LIBBB_H__
#define	__LIBBB_H__    1

#include <stdio.h>
#include <stdarg.h>
#include <sys/stat.h>
#include <sys/types.h>

#ifdef DMALLOC
#include "dmalloc.h"
#endif

#include <features.h>

#if __GNU_LIBRARY__ < 5
/* libc5 doesn't define socklen_t */
typedef unsigned int socklen_t;
/* libc5 doesn't implement BSD 4.4 daemon() */
extern int daemon (int nochdir, int noclose);
#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(int ch) { return ((ch >= '0') && (ch <= '9')); }
static inline int is_octal(int ch)   { return ((ch >= '0') && (ch <= '7')); }

/* 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



extern void show_usage(void) __attribute__ ((noreturn));
extern void error_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2)));
extern void error_msg_and_die(const char *s, ...) __attribute__ ((noreturn, format (printf, 1, 2)));
extern void perror_msg(const char *s, ...);
extern void perror_msg_and_die(const char *s, ...) __attribute__ ((noreturn));

/* These two are used internally -- you shouldn't need to use them */
extern void verror_msg(const char *s, va_list p);
extern void vperror_msg(const char *s, va_list p);

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 *source, const char *dest, int flags);
int copy_file_chunk(FILE *src_file, FILE *dst_file, unsigned long long chunksize);
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(const 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 void trim(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 {
	const 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);

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);


#if (__GLIBC__ < 2)
extern int vdprintf(int d, const char *format, va_list ap);
#endif

int nfsmount(const char *spec, const char *node, int *flags,
	     char **extra_opts, char **mount_opts, int running_bg);

void syslog_msg_with_name(const char *name, int facility, int pri, const char *msg);
void syslog_msg(int facility, int pri, const char *msg);

/* 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);

const char *make_human_readable_str(unsigned long val, unsigned long not_hr);
enum {
	KILOBYTE = 1024,
	MEGABYTE = (KILOBYTE*1024),
	GIGABYTE = (MEGABYTE*1024)
};

int ask_confirmation(void);
int klogctl(int type, char * b, int len);

char *xgetcwd(char *cwd);
char *concat_path_file(const char *path, const char *filename);

typedef struct ar_headers_s {
	char *name;
	off_t size;
	uid_t uid;
	gid_t gid;
	mode_t mode;
	time_t mtime;
	off_t offset;
	struct ar_headers_s *next;
} ar_headers_t;
extern ar_headers_t *get_ar_headers(FILE *in_file);
extern int seek_ared_file(FILE *in_file, ar_headers_t *headers, const char *tar_gz_file);

typedef enum extract_function_e {
	extract_contents = 1,
	extract_control = 2,
	extract_info = 4,
	extract_extract = 8,
	extract_verbose_extract = 16,
	extract_list = 32,
	extract_fsys_tarfile = 64,
	extract_field = 128,
	extract_contents_to_file = 256
} extract_function_t;
extern char *deb_extract(const char *package_filename, const int function,
	const char *argument, const char *argument2);
extern char *untar(FILE *src_tar_file, FILE *output, const int untar_function,
	const char *argument, const char *file_prefix);
extern char *read_text_file_to_buffer(FILE *src_file);
extern char *read_package_field(const char *package_buffer);

extern int unzip(FILE *l_in_file, FILE *l_out_file);
extern void gz_close(int gunzip_pid);
extern int gz_open(FILE *compressed_file, int *pid);

#define CT_AUTO	0
#define CT_UNIX2DOS	1
#define CT_DOS2UNIX	2
/* extern int convert(char *fn, int ConvType); */

enum {
	CP_PRESERVE_STATUS = 1,
	CP_PRESERVE_SYMLINKS = 2,
	CP_RECUR = 4,
	CP_FORCE = 8,
	CP_INTERACTIVE = 16
};

#endif /* __LIBBB_H__ */