1 /* vi: set sw=4 ts=4: */
3 * Busybox main internal header file
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 * Based in part on code from sash, Copyright (c) 1999 by David I. Bell
21 * Permission has been granted to redistribute this code under the GPL.
24 #ifndef _BB_INTERNAL_H_
25 #define _BB_INTERNAL_H_ 1
32 #include <sys/types.h>
38 /* Some useful definitions */
39 #define FALSE ((int) 0)
40 #define TRUE ((int) 1)
41 #define SKIP ((int) 2)
44 #define MTAB_GETMOUNTPT '1'
45 #define MTAB_GETDEVICE '2'
48 #define EXPAND_ALLOC 1024
50 static inline int is_decimal(ch) { return ((ch >= '0') && (ch <= '9')); }
51 static inline int is_octal(ch) { return ((ch >= '0') && (ch <= '7')); }
53 /* Macros for min/max. */
55 #define MIN(a,b) (((a)<(b))?(a):(b))
59 #define MAX(a,b) (((a)>(b))?(a):(b))
73 int (*main)(int argc, char** argv);
74 enum Location location;
78 extern const struct BB_applet applets[];
80 /* Automagically pull in all the applet function prototypes and
81 * applet usage strings. These are all of the form:
82 * extern int foo_main(int argc, char **argv);
83 * extern const char foo_usage[];
84 * These are all autogenerated from the set of currently defined applets.
90 extern const char *applet_name;
91 extern int applet_name_compare(const void *x, const void *y);
93 extern void usage(const char *usage) __attribute__ ((noreturn));
94 extern void error_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2)));
95 extern void error_msg_and_die(const char *s, ...) __attribute__ ((noreturn, format (printf, 1, 2)));
96 extern void perror_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2)));
97 extern void perror_msg_and_die(const char *s, ...) __attribute__ ((noreturn, format (printf, 1, 2)));
99 const char *mode_string(int mode);
100 const char *time_string(time_t timeVal);
101 int is_directory(const char *name, const int followLinks, struct stat *statBuf);
102 int isDevice(const char *name);
104 typedef struct ino_dev_hash_bucket_struct {
105 struct ino_dev_hash_bucket_struct *next;
109 } ino_dev_hashtable_bucket_t;
110 int is_in_ino_dev_hashtable(const struct stat *statbuf, char **name);
111 void add_to_ino_dev_hashtable(const struct stat *statbuf, const char *name);
112 void reset_ino_dev_hashtable(void);
114 int copy_file(const char *srcName, const char *destName,
115 int setModes, int followLinks, int forceFlag);
116 int copy_file_chunk(int srcFd, int dstFd, size_t remaining);
117 char *buildName(const char *dirName, const char *fileName);
118 int makeString(int argc, const char **argv, char *buf, int bufLen);
119 char *getChunk(int size);
120 char *chunkstrdup(const char *str);
121 void freeChunks(void);
122 ssize_t safe_read(int fd, void *buf, size_t count);
123 int full_write(int fd, const char *buf, int len);
124 int full_read(int fd, char *buf, int len);
125 int recursive_action(const char *fileName, int recurse, int followLinks, int depthFirst,
126 int (*fileAction) (const char *fileName, struct stat* statbuf, void* userData),
127 int (*dirAction) (const char *fileName, struct stat* statbuf, void* userData),
130 extern int create_path (const char *name, int mode);
131 extern int parse_mode( const char* s, mode_t* theMode);
133 extern int get_kernel_revision(void);
135 extern int get_console_fd(char* tty_name);
136 extern struct mntent *find_mount_point(const char *name, const char *table);
137 extern void write_mtab(char* blockDevice, char* directory,
138 char* filesystemType, long flags, char* string_flags);
139 extern void erase_mtab(const char * name);
140 extern void mtab_read(void);
141 extern char *mtab_first(void **iter);
142 extern char *mtab_next(void **iter);
143 extern char *mtab_getinfo(const char *match, const char which);
144 extern int check_wildcard_match(const char* text, const char* pattern);
145 extern long atoi_w_units (const char *cp);
146 extern pid_t* find_pid_by_name( char* pidName);
147 extern int find_real_root_device_name(char* name);
148 extern char *get_line_from_file(FILE *file);
149 extern void print_file(FILE *file);
150 extern int print_file_by_name(char *filename);
151 extern char process_escape_sequence(char **ptr);
152 extern char *get_last_path_component(char *path);
153 extern FILE *wfopen(const char *path, const char *mode);
154 extern FILE *xfopen(const char *path, const char *mode);
157 extern void *xmalloc (size_t size);
158 extern void *xrealloc(void *old, size_t size);
159 extern void *xcalloc(size_t nmemb, size_t size);
160 extern char *xstrdup (const char *s);
162 extern char *xstrndup (const char *s, int n);
169 extern unsigned long parse_number(const char *numstr, struct suffix_mult *suffixes);
172 /* These parse entries in /etc/passwd and /etc/group. This is desirable
173 * for BusyBox since we want to avoid using the glibc NSS stuff, which
174 * increases target size and is often not needed embedded systems. */
175 extern long my_getpwnam(char *name);
176 extern long my_getgrnam(char *name);
177 extern void my_getpwuid(char *name, long uid);
178 extern void my_getgrgid(char *group, long gid);
179 extern long my_getpwnamegid(char *name);
181 extern int device_open(char *device, int mode);
183 #if defined BB_FEATURE_MOUNT_LOOP
184 extern int del_loop(const char *device);
185 extern int set_loop(const char *device, const char *file, int offset, int *loopro);
186 extern char *find_unused_loop_device (void);
190 #if (__GLIBC__ < 2) && (defined BB_SYSLOGD || defined BB_INIT)
191 extern int vdprintf(int d, const char *format, va_list ap);
194 #if defined BB_NFSMOUNT
195 int nfsmount(const char *spec, const char *node, int *flags,
196 char **extra_opts, char **mount_opts, int running_bg);
200 /* Stop system and switch power off if possible. */
201 #define RB_POWER_OFF 0x4321fedc
204 /* Include our own copy of struct sysinfo to avoid binary compatability
205 * problems with Linux 2.4, which changed things. Grumble, grumble. */
207 long uptime; /* Seconds since boot */
208 unsigned long loads[3]; /* 1, 5, and 15 minute load averages */
209 unsigned long totalram; /* Total usable main memory size */
210 unsigned long freeram; /* Available memory size */
211 unsigned long sharedram; /* Amount of shared memory */
212 unsigned long bufferram; /* Memory used by buffers */
213 unsigned long totalswap; /* Total swap space size */
214 unsigned long freeswap; /* swap space still available */
215 unsigned short procs; /* Number of current processes */
216 unsigned long totalhigh; /* Total high memory size */
217 unsigned long freehigh; /* Available high memory size */
218 unsigned int mem_unit; /* Memory unit size in bytes */
219 char _f[20-2*sizeof(long)-sizeof(int)]; /* Padding: libc5 uses this.. */
221 extern int sysinfo (struct sysinfo* info);
223 /* Bit map related macros -- libc5 doens't provide these... sigh. */
225 #define NBBY CHAR_BIT
226 #define setbit(a,i) ((a)[(i)/NBBY] |= 1<<((i)%NBBY))
227 #define clrbit(a,i) ((a)[(i)/NBBY] &= ~(1<<((i)%NBBY)))
228 #define isset(a,i) ((a)[(i)/NBBY] & (1<<((i)%NBBY)))
229 #define isclr(a,i) (((a)[(i)/NBBY] & (1<<((i)%NBBY))) == 0)
232 #ifdef BB_FEATURE_HUMAN_READABLE
233 char *format(unsigned long val, unsigned long hr);
234 #define KILOBYTE 1024
235 #define MEGABYTE (KILOBYTE*1024)
236 #define GIGABYTE (MEGABYTE*1024)
239 #ifdef BB_FEATURE_BUFFERS_GO_ON_STACK
240 #define RESERVE_BB_BUFFER(buffer,len) char buffer[len]
241 #define RESERVE_BB_UBUFFER(buffer,len) unsigned char buffer[len]
243 #define RESERVE_BB_BUFFER(buffer,len) char *buffer=xmalloc(len)
244 #define RESERVE_BB_UBUFFER(buffer,len) unsigned char *buffer=xmalloc(len)
247 #endif /* _BB_INTERNAL_H_ */