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
35 #include <sys/param.h>
36 #include <sys/types.h>
39 /* for the _syscall() macros */
40 #include <sys/syscall.h>
41 #include <linux/unistd.h>
47 /* Some useful definitions */
48 #define FALSE ((int) 0)
49 #define TRUE ((int) 1)
50 #define SKIP ((int) 2)
53 #define MTAB_GETMOUNTPT '1'
54 #define MTAB_GETDEVICE '2'
57 #define EXPAND_ALLOC 1024
59 static inline int is_decimal(ch) { return ((ch >= '0') && (ch <= '9')); }
60 static inline int is_octal(ch) { return ((ch >= '0') && (ch <= '7')); }
62 /* Macros for min/max. */
64 #define MIN(a,b) (((a)<(b))?(a):(b))
68 #define MAX(a,b) (((a)>(b))?(a):(b))
72 /* I don't like nested includes, but the string and io functions are used
76 #if !defined(NO_STRING_H) || defined(STDC_HEADERS)
78 # if !defined(STDC_HEADERS) && !defined(NO_MEMORY_H) && !defined(__GNUC__)
81 # define memzero(s, n) memset ((void *)(s), 0, (n))
85 # define strrchr rindex
86 # define memcpy(d, s, n) bcopy((s), (d), (n))
87 # define memcmp(s1, s2, n) bcmp((s1), (s2), (n))
88 # define memzero(s, n) bzero((s), (n))
102 int (*main)(int argc, char** argv);
103 enum Location location;
107 extern const struct BB_applet applets[];
109 /* Automagically pull in all the applet function prototypes and
110 * applet usage strings. These are all of the form:
111 * extern int foo_main(int argc, char **argv);
112 * extern const char foo_usage[];
113 * These are all autogenerated from the set of currently defined applets.
119 extern const char *applet_name;
120 extern int applet_name_compare(const void *x, const void *y);
122 extern void usage(const char *usage) __attribute__ ((noreturn));
123 extern void error_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2)));
124 extern void error_msg_and_die(const char *s, ...) __attribute__ ((noreturn, format (printf, 1, 2)));
125 extern void perror_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2)));
126 extern void perror_msg_and_die(const char *s, ...) __attribute__ ((noreturn, format (printf, 1, 2)));
128 const char *mode_string(int mode);
129 const char *time_string(time_t timeVal);
130 int is_directory(const char *name, const int followLinks, struct stat *statBuf);
131 int isDevice(const char *name);
133 typedef struct ino_dev_hash_bucket_struct {
134 struct ino_dev_hash_bucket_struct *next;
138 } ino_dev_hashtable_bucket_t;
139 int is_in_ino_dev_hashtable(const struct stat *statbuf, char **name);
140 void add_to_ino_dev_hashtable(const struct stat *statbuf, const char *name);
141 void reset_ino_dev_hashtable(void);
143 int copy_file(const char *srcName, const char *destName,
144 int setModes, int followLinks, int forceFlag);
145 int copy_file_chunk(int srcFd, int dstFd, size_t remaining);
146 char *buildName(const char *dirName, const char *fileName);
147 int makeString(int argc, const char **argv, char *buf, int bufLen);
148 char *getChunk(int size);
149 char *chunkstrdup(const char *str);
150 void freeChunks(void);
151 ssize_t safe_read(int fd, void *buf, size_t count);
152 int full_write(int fd, const char *buf, int len);
153 int full_read(int fd, char *buf, int len);
154 int recursive_action(const char *fileName, int recurse, int followLinks, int depthFirst,
155 int (*fileAction) (const char *fileName, struct stat* statbuf, void* userData),
156 int (*dirAction) (const char *fileName, struct stat* statbuf, void* userData),
159 extern int create_path (const char *name, int mode);
160 extern int parse_mode( const char* s, mode_t* theMode);
162 extern int get_kernel_revision(void);
164 extern int get_console_fd(char* tty_name);
165 extern struct mntent *find_mount_point(const char *name, const char *table);
166 extern void write_mtab(char* blockDevice, char* directory,
167 char* filesystemType, long flags, char* string_flags);
168 extern void erase_mtab(const char * name);
169 extern void mtab_read(void);
170 extern char *mtab_first(void **iter);
171 extern char *mtab_next(void **iter);
172 extern char *mtab_getinfo(const char *match, const char which);
173 extern int check_wildcard_match(const char* text, const char* pattern);
174 extern long atoi_w_units (const char *cp);
175 extern pid_t* find_pid_by_name( char* pidName);
176 extern int find_real_root_device_name(char* name);
177 extern char *get_line_from_file(FILE *file);
178 extern void print_file(FILE *file);
179 extern int print_file_by_name(char *filename);
180 extern char process_escape_sequence(char **ptr);
181 extern char *get_last_path_component(char *path);
182 extern void xregcomp(regex_t *preg, const char *regex, int cflags);
183 extern FILE *wfopen(const char *path, const char *mode);
184 extern FILE *xfopen(const char *path, const char *mode);
187 extern void *xmalloc (size_t size);
188 extern void *xrealloc(void *old, size_t size);
189 extern void *xcalloc(size_t nmemb, size_t size);
190 extern char *xstrdup (const char *s);
192 extern char *xstrndup (const char *s, int n);
199 extern unsigned long parse_number(const char *numstr, struct suffix_mult *suffixes);
202 /* These parse entries in /etc/passwd and /etc/group. This is desirable
203 * for BusyBox since we want to avoid using the glibc NSS stuff, which
204 * increases target size and is often not needed embedded systems. */
205 extern long my_getpwnam(char *name);
206 extern long my_getgrnam(char *name);
207 extern void my_getpwuid(char *name, long uid);
208 extern void my_getgrgid(char *group, long gid);
209 extern long my_getpwnamegid(char *name);
211 extern int device_open(char *device, int mode);
213 #if defined BB_FEATURE_MOUNT_LOOP
214 extern int del_loop(const char *device);
215 extern int set_loop(const char *device, const char *file, int offset, int *loopro);
216 extern char *find_unused_loop_device (void);
220 #if (__GLIBC__ < 2) && (defined BB_SYSLOGD || defined BB_INIT)
221 extern int vdprintf(int d, const char *format, va_list ap);
224 #if defined BB_NFSMOUNT
225 int nfsmount(const char *spec, const char *node, int *flags,
226 char **extra_opts, char **mount_opts, int running_bg);
230 /* Stop system and switch power off if possible. */
231 #define RB_POWER_OFF 0x4321fedc
234 /* Include our own copy of struct sysinfo to avoid binary compatability
235 * problems with Linux 2.4, which changed things. Grumble, grumble. */
237 long uptime; /* Seconds since boot */
238 unsigned long loads[3]; /* 1, 5, and 15 minute load averages */
239 unsigned long totalram; /* Total usable main memory size */
240 unsigned long freeram; /* Available memory size */
241 unsigned long sharedram; /* Amount of shared memory */
242 unsigned long bufferram; /* Memory used by buffers */
243 unsigned long totalswap; /* Total swap space size */
244 unsigned long freeswap; /* swap space still available */
245 unsigned short procs; /* Number of current processes */
246 unsigned long totalhigh; /* Total high memory size */
247 unsigned long freehigh; /* Available high memory size */
248 unsigned int mem_unit; /* Memory unit size in bytes */
249 char _f[20-2*sizeof(long)-sizeof(int)]; /* Padding: libc5 uses this.. */
251 extern int sysinfo (struct sysinfo* info);
253 /* Bit map related macros -- libc5 doens't provide these... sigh. */
255 #define NBBY CHAR_BIT
256 #define setbit(a,i) ((a)[(i)/NBBY] |= 1<<((i)%NBBY))
257 #define clrbit(a,i) ((a)[(i)/NBBY] &= ~(1<<((i)%NBBY)))
258 #define isset(a,i) ((a)[(i)/NBBY] & (1<<((i)%NBBY)))
259 #define isclr(a,i) (((a)[(i)/NBBY] & (1<<((i)%NBBY))) == 0)
262 #ifdef BB_FEATURE_HUMAN_READABLE
263 char *format(unsigned long val, unsigned long hr);
264 #define KILOBYTE 1024
265 #define MEGABYTE (KILOBYTE*1024)
266 #define GIGABYTE (MEGABYTE*1024)
269 #endif /* _BB_INTERNAL_H_ */