1 /* vi: set sw=4 ts=4: */
3 * Busybox main internal header file
5 * Based in part on code from sash, Copyright (c) 1999 by David I. Bell
6 * Permission has been granted to redistribute this code under the GPL.
8 * Licensed under the GPL version 2, see the file LICENSE in this tarball.
10 #ifndef __LIBBUSYBOX_H__
11 #define __LIBBUSYBOX_H__ 1
30 #include <sys/ioctl.h>
32 #include <sys/socket.h>
34 #include <sys/statfs.h>
36 #include <sys/types.h>
44 #include <selinux/selinux.h>
45 #include <selinux/context.h>
48 #if ENABLE_LOCALE_SUPPORT
51 #define setlocale(x,y) ((void)0)
56 /* ifdef it out, because it may include <shadow.h> */
57 /* and we may not even _have_ <shadow.h>! */
58 #if ENABLE_FEATURE_SHADOWPASSWDS
62 /* Try to pull in PATH_MAX */
64 #include <sys/param.h>
69 /* Tested to work correctly (IIRC :]) */
70 #define MAXINT(T) (T)( \
73 : (T)~((T)1 << (sizeof(T)*8-1)) \
76 #define MININT(T) (T)( \
79 : ((T)1 << (sizeof(T)*8-1)) \
82 /* Large file support */
83 /* Note that CONFIG_LFS forces bbox to be built with all common ops
84 * (stat, lseek etc) mapped to "largefile" variants by libc.
85 * Practically it means that open() automatically has O_LARGEFILE added
86 * and all filesize/file_offset parameters and struct members are "large"
87 * (in today's world - signed 64bit). For full support of large files,
88 * we need a few helper #defines (below) and careful use of off_t
89 * instead of int/ssize_t. No lseek64(), O_LARGEFILE etc necessary */
91 /* CONFIG_LFS is on */
92 # if ULONG_MAX > 0xffffffff
93 /* "long" is long enough on this system */
94 # define XATOOFF(a) xatoul_range(a, 0, LONG_MAX)
95 /* usage: sz = BB_STRTOOFF(s, NULL, 10); if (errno || sz < 0) die(); */
96 # define BB_STRTOOFF bb_strtoul
97 # define STRTOOFF strtoul
98 /* usage: printf("size: %"OFF_FMT"d (%"OFF_FMT"x)\n", sz, sz); */
101 /* "long" is too short, need "long long" */
102 # define XATOOFF(a) xatoull_range(a, 0, LLONG_MAX)
103 # define BB_STRTOOFF bb_strtoull
104 # define STRTOOFF strtoull
105 # define OFF_FMT "ll"
108 /* CONFIG_LFS is off */
109 # if UINT_MAX == 0xffffffff
110 /* While sizeof(off_t) == sizeof(int), off_t is typedef'ed to long anyway.
111 * gcc will throw warnings on printf("%d", off_t). Crap... */
112 # define XATOOFF(a) xatoi_u(a)
113 # define BB_STRTOOFF bb_strtou
114 # define STRTOOFF strtol
117 # define XATOOFF(a) xatoul_range(a, 0, LONG_MAX)
118 # define BB_STRTOOFF bb_strtoul
119 # define STRTOOFF strtol
123 /* scary. better ideas? (but do *test* them first!) */
124 #define OFF_T_MAX ((off_t)~((off_t)1 << (sizeof(off_t)*8-1)))
126 /* This structure defines protocol families and their handlers. */
132 char *(*print) (unsigned char *);
133 const char *(*sprint) (struct sockaddr *, int numeric);
134 int (*input) (/*int type,*/ const char *bufp, struct sockaddr *);
135 void (*herror) (char *text);
136 int (*rprint) (int options);
137 int (*rinput) (int typ, int ext, char **argv);
140 int (*getmask) (char *src, struct sockaddr * mask, char *name);
143 /* This structure defines hardware protocols and their handlers. */
149 char *(*print) (unsigned char *);
150 int (*input) (const char *, struct sockaddr *);
151 int (*activate) (int fd);
152 int suppress_null_addr;
155 /* Some useful definitions */
157 #define FALSE ((int) 0)
159 #define TRUE ((int) 1)
161 #define SKIP ((int) 2)
164 #define MTAB_GETMOUNTPT '1'
165 #define MTAB_GETDEVICE '2'
167 #define BUF_SIZE 8192
168 #define EXPAND_ALLOC 1024
170 /* Macros for min/max. */
172 #define MIN(a,b) (((a)<(b))?(a):(b))
176 #define MAX(a,b) (((a)>(b))?(a):(b))
179 /* buffer allocation schemes */
180 #if ENABLE_FEATURE_BUFFERS_GO_ON_STACK
181 #define RESERVE_CONFIG_BUFFER(buffer,len) char buffer[len]
182 #define RESERVE_CONFIG_UBUFFER(buffer,len) unsigned char buffer[len]
183 #define RELEASE_CONFIG_BUFFER(buffer) ((void)0)
185 #if ENABLE_FEATURE_BUFFERS_GO_IN_BSS
186 #define RESERVE_CONFIG_BUFFER(buffer,len) static char buffer[len]
187 #define RESERVE_CONFIG_UBUFFER(buffer,len) static unsigned char buffer[len]
188 #define RELEASE_CONFIG_BUFFER(buffer) ((void)0)
190 #define RESERVE_CONFIG_BUFFER(buffer,len) char *buffer=xmalloc(len)
191 #define RESERVE_CONFIG_UBUFFER(buffer,len) unsigned char *buffer=xmalloc(len)
192 #define RELEASE_CONFIG_BUFFER(buffer) free (buffer)
197 #if defined(__GLIBC__) && __GLIBC__ < 2
198 int vdprintf(int d, const char *format, va_list ap);
200 // This is declared here rather than #including <libgen.h> in order to avoid
201 // confusing the two versions of basename. See the dirname/basename man page
203 char *dirname(char *path);
204 /* Include our own copy of struct sysinfo to avoid binary compatibility
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 short pad; /* Padding needed for m68k */
217 unsigned long totalhigh; /* Total high memory size */
218 unsigned long freehigh; /* Available high memory size */
219 unsigned int mem_unit; /* Memory unit size in bytes */
220 char _f[20-2*sizeof(long)-sizeof(int)]; /* Padding: libc5 uses this.. */
222 extern int sysinfo(struct sysinfo* info);
225 extern void chomp(char *s);
226 extern void trim(char *s);
227 extern char *skip_whitespace(const char *);
228 extern char *skip_non_whitespace(const char *);
230 //TODO: supply a pointer to char[11] buffer (avoid statics)?
231 extern const char *bb_mode_string(mode_t mode);
232 extern int is_directory(const char *name, int followLinks, struct stat *statBuf);
233 extern int remove_file(const char *path, int flags);
234 extern int copy_file(const char *source, const char *dest, int flags);
235 #define action_recurse (1<<0)
236 #define action_followLinks (1<<1)
237 #define action_depthFirst (1<<2)
238 #define action_reverse (1<<3)
239 extern int recursive_action(const char *fileName, unsigned flags,
240 int (*fileAction) (const char *fileName, struct stat* statbuf, void* userData, int depth),
241 int (*dirAction) (const char *fileName, struct stat* statbuf, void* userData, int depth),
242 void* userData, const unsigned depth);
243 extern int device_open(const char *device, int mode);
244 extern int get_console_fd(void);
245 extern char *find_block_device(const char *path);
246 /* bb_copyfd_XX print read/write errors and return -1 if they occur */
247 extern off_t bb_copyfd_eof(int fd1, int fd2);
248 extern off_t bb_copyfd_size(int fd1, int fd2, off_t size);
249 extern void bb_copyfd_exact_size(int fd1, int fd2, off_t size);
250 /* "short" copy can be detected by return value < size */
251 /* this helper yells "short read!" if param is not -1 */
252 extern void complain_copyfd_and_die(off_t sz) ATTRIBUTE_NORETURN;
253 extern char bb_process_escape_sequence(const char **ptr);
254 /* TODO: sometimes modifies its parameter, which
255 * makes it rather inconvenient at times: */
256 extern char *bb_get_last_path_component(char *path);
258 int ndelay_on(int fd);
259 int ndelay_off(int fd);
260 void xmove_fd(int, int);
263 extern DIR *xopendir(const char *path);
264 extern DIR *warn_opendir(const char *path);
266 char *xrealloc_getcwd_or_warn(char *cwd);
267 char *xmalloc_readlink_or_warn(const char *path);
268 char *xmalloc_realpath(const char *path);
269 extern void xstat(const char *filename, struct stat *buf);
271 /* Unlike waitpid, waits ONLY for one process,
272 * It's safe to pass negative 'pids' from failed [v]fork -
273 * wait4pid will return -1 and ECHILD in errno.
274 * IOW: rc = wait4pid(spawn(argv));
275 * if (rc < 0) bb_perror_msg("%s", argv[0]);
276 * if (rc > 0) bb_error_msg("exit code: %d", rc);
278 extern int wait4pid(int pid);
279 extern int wait_pid(int *wstat, int pid);
280 extern int wait_nohang(int *wstat);
281 //TODO: signal(sid, f) is the same? then why?
282 extern void sig_catch(int,void (*)(int));
283 //#define sig_ignore(s) (sig_catch((s), SIG_IGN))
284 //#define sig_uncatch(s) (sig_catch((s), SIG_DFL))
285 extern void sig_block(int);
286 extern void sig_unblock(int);
287 /* UNUSED: extern void sig_blocknone(void);*/
288 extern void sig_pause(void);
290 #define wait_crashed(w) ((w) & 127)
291 #define wait_exitcode(w) ((w) >> 8)
292 #define wait_stopsig(w) ((w) >> 8)
293 #define wait_stopped(w) (((w) & 127) == 127)
297 void xsetgid(gid_t gid);
298 void xsetuid(uid_t uid);
299 void xchdir(const char *path);
300 void xsetenv(const char *key, const char *value);
301 void xunlink(const char *pathname);
302 int xopen(const char *pathname, int flags);
303 int xopen3(const char *pathname, int flags, int mode);
304 off_t xlseek(int fd, off_t offset, int whence);
305 off_t fdlength(int fd);
308 int xsocket(int domain, int type, int protocol);
309 void xbind(int sockfd, struct sockaddr *my_addr, socklen_t addrlen);
310 void xlisten(int s, int backlog);
311 void xconnect(int s, const struct sockaddr *s_addr, socklen_t addrlen);
312 int setsockopt_reuseaddr(int fd);
313 int setsockopt_broadcast(int fd);
314 /* NB: returns port in host byte order */
315 unsigned bb_lookup_port(const char *port, const char *protocol, unsigned default_port);
316 typedef struct len_and_sockaddr {
320 struct sockaddr_in sin;
321 #if ENABLE_FEATURE_IPV6
322 struct sockaddr_in6 sin6;
327 LSA_SIZEOF_SA = sizeof(
330 struct sockaddr_in sin;
331 #if ENABLE_FEATURE_IPV6
332 struct sockaddr_in6 sin6;
337 /* Create stream socket, and allocated suitable lsa
338 * (lsa of correct size and lsa->sa.sa_family (AF_INET/AF_INET6)) */
339 int xsocket_type(len_and_sockaddr **lsap, int sock_type);
340 int xsocket_stream(len_and_sockaddr **lsap);
341 /* Create server socket bound to bindaddr:port. bindaddr can be NULL,
342 * numeric IP ("N.N.N.N") or numeric IPv6 address,
343 * and can have ":PORT" suffix (for IPv6 use "[X:X:...:X]:PORT").
344 * If there is no suffix, port argument is used */
345 int create_and_bind_stream_or_die(const char *bindaddr, int port);
346 int create_and_bind_dgram_or_die(const char *bindaddr, int port);
347 /* Create client TCP socket connected to peer:port. Peer cannot be NULL.
348 * Peer can be numeric IP ("N.N.N.N"), numeric IPv6 address or hostname,
349 * and can have ":PORT" suffix (for IPv6 use "[X:X:...:X]:PORT").
350 * If there is no suffix, port argument is used */
351 int create_and_connect_stream_or_die(const char *peer, int port);
352 /* Connect to peer identified by lsa */
353 int xconnect_stream(const len_and_sockaddr *lsa);
354 /* Return malloc'ed len_and_sockaddr with socket address of host:port
355 * Currently will return IPv4 or IPv6 sockaddrs only
356 * (depending on host), but in theory nothing prevents e.g.
357 * UNIX socket address being returned, IPX sockaddr etc...
358 * On error does bb_error_msg and returns NULL */
359 len_and_sockaddr* host2sockaddr(const char *host, int port);
360 /* Version which dies on error */
361 len_and_sockaddr* xhost2sockaddr(const char *host, int port);
362 len_and_sockaddr* xdotted2sockaddr(const char *host, int port);
363 #if ENABLE_FEATURE_IPV6
364 /* Same, useful if you want to force family (e.g. IPv6) */
365 len_and_sockaddr* host_and_af2sockaddr(const char *host, int port, sa_family_t af);
366 len_and_sockaddr* xhost_and_af2sockaddr(const char *host, int port, sa_family_t af);
368 /* [we evaluate af: think about "host_and_af2sockaddr(..., af++)"] */
369 #define host_and_af2sockaddr(host, port, af) ((void)(af), host2sockaddr((host), (port)))
370 #define xhost_and_af2sockaddr(host, port, af) ((void)(af), xhost2sockaddr((host), (port)))
372 /* Assign sin[6]_port member if the socket is of corresponding type,
373 * otherwise no-op. Useful for ftp.
374 * NB: does NOT do htons() internally, just direct assignment. */
375 void set_nport(len_and_sockaddr *lsa, unsigned port);
376 /* Retrieve sin[6]_port or return -1 for non-INET[6] lsa's */
377 int get_nport(const struct sockaddr *sa);
378 /* Reverse DNS. Returns NULL on failure. */
379 char* xmalloc_sockaddr2host(const struct sockaddr *sa, socklen_t salen);
380 /* This one doesn't append :PORTNUM */
381 char* xmalloc_sockaddr2host_noport(const struct sockaddr *sa, socklen_t salen);
382 /* This one also doesn't fall back to dotted IP (returns NULL) */
383 char* xmalloc_sockaddr2hostonly_noport(const struct sockaddr *sa, socklen_t salen);
384 /* inet_[ap]ton on steroids */
385 char* xmalloc_sockaddr2dotted(const struct sockaddr *sa, socklen_t salen);
386 char* xmalloc_sockaddr2dotted_noport(const struct sockaddr *sa, socklen_t salen);
387 // "old" (ipv4 only) API
388 // users: traceroute.c hostname.c - use _list_ of all IPs
389 struct hostent *xgethostbyname(const char *name);
390 // Also mount.c and inetd.c are using gethostbyname(),
391 // + inet_common.c has additional IPv4-only stuff
394 void socket_want_pktinfo(int fd);
395 ssize_t send_to_from(int fd, void *buf, size_t len, int flags,
396 const struct sockaddr *from, const struct sockaddr *to,
398 ssize_t recv_from_to(int fd, void *buf, size_t len, int flags,
399 struct sockaddr *from, struct sockaddr *to,
403 extern char *xstrdup(const char *s);
404 extern char *xstrndup(const char *s, int n);
405 extern char *safe_strncpy(char *dst, const char *src, size_t size);
406 extern char *xasprintf(const char *format, ...) __attribute__ ((format (printf, 1, 2)));
407 // gcc-4.1.1 still isn't good enough at optimizing it
408 // (+200 bytes compared to macro)
409 //static ATTRIBUTE_ALWAYS_INLINE
410 //int LONE_DASH(const char *s) { return s[0] == '-' && !s[1]; }
411 //static ATTRIBUTE_ALWAYS_INLINE
412 //int NOT_LONE_DASH(const char *s) { return s[0] != '-' || s[1]; }
413 #define LONE_DASH(s) ((s)[0] == '-' && !(s)[1])
414 #define NOT_LONE_DASH(s) ((s)[0] != '-' || (s)[1])
415 #define LONE_CHAR(s,c) ((s)[0] == (c) && !(s)[1])
416 #define NOT_LONE_CHAR(s,c) ((s)[0] != (c) || (s)[1])
418 /* dmalloc will redefine these to it's own implementation. It is safe
419 * to have the prototypes here unconditionally. */
420 extern void *xmalloc(size_t size);
421 extern void *xrealloc(void *old, size_t size);
422 extern void *xzalloc(size_t size);
424 extern ssize_t safe_read(int fd, void *buf, size_t count);
425 extern ssize_t full_read(int fd, void *buf, size_t count);
426 extern void xread(int fd, void *buf, size_t count);
427 extern unsigned char xread_char(int fd);
428 extern char *reads(int fd, char *buf, size_t count);
429 extern ssize_t read_close(int fd, void *buf, size_t count);
430 extern ssize_t open_read_close(const char *filename, void *buf, size_t count);
431 extern void *xmalloc_open_read_close(const char *filename, size_t *sizep);
433 extern ssize_t safe_write(int fd, const void *buf, size_t count);
434 extern ssize_t full_write(int fd, const void *buf, size_t count);
435 extern void xwrite(int fd, const void *buf, size_t count);
437 /* Reads and prints to stdout till eof, then closes FILE. Exits on error: */
438 extern void xprint_and_close_file(FILE *file);
439 extern char *xmalloc_fgets(FILE *file);
440 /* Read up to (and including) TERMINATING_STRING: */
441 extern char *xmalloc_fgets_str(FILE *file, const char *terminating_string);
442 /* Chops off '\n' from the end, unlike fgets: */
443 extern char *xmalloc_getline(FILE *file);
444 extern char *bb_get_chunk_from_file(FILE *file, int *end);
445 extern void die_if_ferror(FILE *file, const char *msg);
446 extern void die_if_ferror_stdout(void);
447 extern void xfflush_stdout(void);
448 extern void fflush_stdout_and_exit(int retval) ATTRIBUTE_NORETURN;
449 extern int fclose_if_not_stdin(FILE *file);
450 extern FILE *xfopen(const char *filename, const char *mode);
451 /* Prints warning to stderr and returns NULL on failure: */
452 extern FILE *fopen_or_warn(const char *filename, const char *mode);
453 /* "Opens" stdin if filename is special, else just opens file: */
454 extern FILE *fopen_or_warn_stdin(const char *filename);
457 extern char *utoa(unsigned n);
458 extern char *itoa(int n);
459 /* Returns a pointer past the formatted number, does NOT null-terminate */
460 extern char *utoa_to_buf(unsigned n, char *buf, unsigned buflen);
461 extern char *itoa_to_buf(int n, char *buf, unsigned buflen);
462 extern void smart_ulltoa5(unsigned long long ul, char buf[5]);
463 /* Put a string of hex bytes (ala "1b"), return advanced pointer */
464 extern char *bin2hex(char *buf, const char *cp, int count);
472 /* Using xatoi() instead of naive atoi() is not always convenient -
473 * in many places people want *non-negative* values, but store them
474 * in signed int. Therefore we need this one:
475 * dies if input is not in [0, INT_MAX] range. Also will reject '-0' etc */
476 int xatoi_u(const char *numstr);
477 /* Useful for reading port numbers */
478 uint16_t xatou16(const char *numstr);
481 /* These parse entries in /etc/passwd and /etc/group. This is desirable
482 * for BusyBox since we want to avoid using the glibc NSS stuff, which
483 * increases target size and is often not needed on embedded systems. */
484 long xuname2uid(const char *name);
485 long xgroup2gid(const char *name);
486 /* wrapper: allows string to contain numeric uid or gid */
487 unsigned long get_ug_id(const char *s, long (*xname2id)(const char *));
488 /* from chpst. Does not die, returns 0 on failure */
493 /* always sets uid and gid */
494 int get_uidgid(struct bb_uidgid_t*, const char*, int numeric_ok);
495 /* chown-like handling of "user[:[group]" */
496 void parse_chown_usergroup_or_die(struct bb_uidgid_t *u, char *user_group);
498 /*extern char *bb_getug(char *buffer, char *idname, long id, int bufsize, char prefix);*/
499 char *bb_getpwuid(char *name, long uid, int bufsize);
500 char *bb_getgrgid(char *group, long gid, int bufsize);
501 /* versions which cache results (useful for ps, ls etc) */
502 const char* get_cached_username(uid_t uid);
503 const char* get_cached_groupname(gid_t gid);
504 void clear_username_cache(void);
505 /* internally usernames are saved in fixed-sized char[] buffers */
506 enum { USERNAME_MAX_SIZE = 16 - sizeof(int) };
509 int execable_file(const char *name);
510 char *find_execable(const char *filename);
511 int exists_execable(const char *filename);
513 #if ENABLE_FEATURE_EXEC_PREFER_APPLETS
514 int bb_execvp(const char *file, char *const argv[]);
515 #define BB_EXECVP(prog,cmd) bb_execvp(prog,cmd)
516 #define BB_EXECLP(prog,cmd,...) \
517 execlp((find_applet_by_name(prog)) ? CONFIG_BUSYBOX_EXEC_PATH : prog, \
520 #define BB_EXECVP(prog,cmd) execvp(prog,cmd)
521 #define BB_EXECLP(prog,cmd,...) execlp(prog,cmd, __VA_ARGS__)
524 /* NOMMU friendy fork+exec */
525 pid_t spawn(char **argv);
526 pid_t xspawn(char **argv);
527 /* Helpers for daemonization.
529 * bb_daemonize(flags) = daemonize, does not compile on NOMMU
531 * bb_daemonize_or_rexec(flags, argv) = daemonizes on MMU (and ignores argv),
532 * rexec's itself on NOMMU with argv passed as command line.
533 * Thus bb_daemonize_or_rexec may cause your <applet>_main() to be re-executed
534 * from the start. (It will detect it and not reexec again second time).
535 * You have to audit carefully that you don't do something twice as a result
536 * (opening files/sockets, parsing config files etc...)!
538 * Both of the above will redirect fd 0,1,2 to /dev/null and drop ctty
539 * (will do setsid()).
541 * forkexit_or_rexec(argv) = bare-bones "fork + parent exits" on MMU,
542 * "vfork + re-exec ourself" on NOMMU. No fd redirection, no setsid().
543 * Currently used for openvt. On MMU ignores argv.
545 * Helper for network daemons in foreground mode:
547 * bb_sanitize_stdio() = make sure that fd 0,1,2 are opened by opening them
548 * to /dev/null if they are not.
551 DAEMON_CHDIR_ROOT = 1,
552 DAEMON_DEVNULL_STDIO = /* 2 */ 0, /* no users so far */
553 DAEMON_CLOSE_EXTRA_FDS = 4,
554 DAEMON_ONLY_SANITIZE = 8, /* internal use */
557 void forkexit_or_rexec(void);
558 # define forkexit_or_rexec(argv) forkexit_or_rexec()
559 # define bb_daemonize_or_rexec(flags, argv) bb_daemonize_or_rexec(flags)
560 # define bb_daemonize(flags) bb_daemonize_or_rexec(flags, bogus)
562 void forkexit_or_rexec(char **argv);
563 extern smallint re_execed;
564 # define fork() BUG_fork_is_unavailable_on_nommu()
565 # define daemon(a,b) BUG_daemon_is_unavailable_on_nommu()
566 # define bb_daemonize(a) BUG_bb_daemonize_is_unavailable_on_nommu()
568 void bb_daemonize_or_rexec(int flags, char **argv);
569 void bb_sanitize_stdio(void);
572 enum { BB_GETOPT_ERROR = 0x80000000 };
573 extern const char *opt_complementary;
574 #if ENABLE_GETOPT_LONG
575 extern const struct option *applet_long_options;
577 extern uint32_t option_mask32;
578 extern uint32_t getopt32(int argc, char **argv, const char *applet_opts, ...);
581 typedef struct llist_s {
583 struct llist_s *link;
585 extern void llist_add_to(llist_t **old_head, void *data);
586 extern void llist_add_to_end(llist_t **list_head, void *data);
587 extern void *llist_pop(llist_t **elm);
588 extern void llist_unlink(llist_t **head, llist_t *elm);
589 extern void llist_free(llist_t *elm, void (*freeit)(void *data));
590 extern llist_t* llist_rev(llist_t *list);
592 #if ENABLE_FEATURE_PIDFILE
593 int write_pidfile(const char *path);
594 #define remove_pidfile(f) ((void)unlink(f))
596 #define write_pidfile(f) 1
597 #define remove_pidfile(f) ((void)0)
602 LOGMODE_STDIO = 1<<0,
603 LOGMODE_SYSLOG = 1<<1,
604 LOGMODE_BOTH = LOGMODE_SYSLOG + LOGMODE_STDIO,
606 extern const char *msg_eol;
607 extern smallint logmode;
608 extern int die_sleep;
609 extern int xfunc_error_retval;
610 extern void sleep_and_die(void) ATTRIBUTE_NORETURN;
611 extern void bb_show_usage(void) ATTRIBUTE_NORETURN ATTRIBUTE_EXTERNALLY_VISIBLE;
612 extern void bb_error_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2)));
613 extern void bb_error_msg_and_die(const char *s, ...) __attribute__ ((noreturn, format (printf, 1, 2)));
614 extern void bb_perror_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2)));
615 extern void bb_perror_msg_and_die(const char *s, ...) __attribute__ ((noreturn, format (printf, 1, 2)));
616 extern void bb_vherror_msg(const char *s, va_list p);
617 extern void bb_herror_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2)));
618 extern void bb_herror_msg_and_die(const char *s, ...) __attribute__ ((noreturn, format (printf, 1, 2)));
619 extern void bb_perror_nomsg_and_die(void) ATTRIBUTE_NORETURN;
620 extern void bb_perror_nomsg(void);
621 extern void bb_info_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2)));
622 /* These are used internally -- you shouldn't need to use them */
623 extern void bb_verror_msg(const char *s, va_list p, const char *strerr);
624 extern void bb_vperror_msg(const char *s, va_list p);
625 extern void bb_vinfo_msg(const char *s, va_list p);
628 /* applets which are useful from another applets */
629 int bb_cat(char** argv);
630 int bb_echo(char** argv);
631 int bb_test(int argc, char** argv);
633 void bb_displayroutes(int noresolve, int netstatfmt);
635 int chown_main(int argc, char **argv);
637 int gunzip_main(int argc, char **argv);
639 int bbunpack(char **argv,
640 char* (*make_new_name)(char *filename),
641 USE_DESKTOP(long long) int (*unpacker)(void)
646 int create_icmp_socket(void);
647 int create_icmp6_socket(void);
649 extern int interface_opt_a;
650 int display_interfaces(char *ifname);
651 const struct aftype *get_aftype(const char *name);
652 const struct hwtype *get_hwtype(const char *name);
653 const struct hwtype *get_hwntype(int type);
656 #ifndef BUILD_INDIVIDUAL
657 extern struct BB_applet *find_applet_by_name(const char *name);
658 extern void run_applet_by_name(const char *name, int argc, char **argv);
661 extern int match_fstype(const struct mntent *mt, const char *fstypes);
662 extern struct mntent *find_mount_point(const char *name, const char *table);
663 extern void erase_mtab(const char * name);
664 extern unsigned int tty_baud_to_value(speed_t speed);
665 extern speed_t tty_value_to_baud(unsigned int value);
666 extern void bb_warn_ignoring_args(int n);
668 extern int get_linux_version_code(void);
670 extern char *query_loop(const char *device);
671 extern int del_loop(const char *device);
672 extern int set_loop(char **device, const char *file, unsigned long long offset);
675 //TODO: provide pointer to buf (avoid statics)?
676 const char *make_human_readable_str(unsigned long long size,
677 unsigned long block_size, unsigned long display_unit);
679 //TODO: pass buf pointer or return allocated buf (avoid statics)?
680 char *bb_askpass(int timeout, const char * prompt);
681 int bb_ask_confirmation(void);
682 int klogctl(int type, char * b, int len);
684 extern int bb_parse_mode(const char* s, mode_t* theMode);
686 char *concat_path_file(const char *path, const char *filename);
687 char *concat_subpath_file(const char *path, const char *filename);
688 char *last_char_is(const char *s, int c);
691 USE_DESKTOP(long long) int uncompress(int fd_in, int fd_out);
692 int inflate(int in, int out);
695 int bb_make_directory(char *path, long mode, int flags);
697 int get_signum(const char *name);
698 const char *get_signame(int number);
700 char *bb_simplify_path(const char *path);
703 extern void bb_do_delay(int seconds);
704 extern void change_identity(const struct passwd *pw);
705 extern const char *change_identity_e2str(const struct passwd *pw);
706 extern void run_shell(const char *shell, int loginshell, const char *command, const char **additional_args);
708 extern void renew_current_security_context(void);
709 extern void set_current_security_context(security_context_t sid);
710 extern context_t set_security_context_component(security_context_t cur_context,
711 char *user, char *role, char *type, char *range);
712 extern void setfscreatecon_or_die(security_context_t scontext);
714 extern void selinux_or_die(void);
715 extern int restricted_shell(const char *shell);
716 extern void setup_environment(const char *shell, int loginshell, int changeenv, const struct passwd *pw);
717 extern int correct_password(const struct passwd *pw);
718 extern char *pw_encrypt(const char *clear, const char *salt);
719 extern int obscure(const char *old, const char *newval, const struct passwd *pwdp);
720 extern int index_in_str_array(const char * const string_array[], const char *key);
721 extern int index_in_substr_array(const char * const string_array[], const char *key);
722 extern void print_login_issue(const char *issue_file, const char *tty);
723 extern void print_login_prompt(void);
726 extern int get_terminal_width_height(const int fd, int *width, int *height);
728 char *is_in_ino_dev_hashtable(const struct stat *statbuf);
729 void add_to_ino_dev_hashtable(const struct stat *statbuf, const char *name);
730 void reset_ino_dev_hashtable(void);
732 /* At least glibc has horrendously large inline for this, so wrap it */
733 extern unsigned long long bb_makedev(unsigned int major, unsigned int minor);
735 #define makedev(a,b) bb_makedev(a,b)
739 #if ENABLE_FEATURE_EDITING
740 /* It's NOT just ENABLEd or disabled. It's a number: */
741 #ifdef CONFIG_FEATURE_EDITING_HISTORY
742 #define MAX_HISTORY (CONFIG_FEATURE_EDITING_HISTORY + 0)
744 #define MAX_HISTORY 0
746 struct line_input_t {
748 const char *path_lookup;
752 USE_FEATURE_EDITING_SAVEHISTORY(const char *hist_file;)
753 char *history[MAX_HISTORY + 1];
757 DO_HISTORY = 1 * (MAX_HISTORY > 0),
758 SAVE_HISTORY = 2 * (MAX_HISTORY > 0) * ENABLE_FEATURE_EDITING_SAVEHISTORY,
759 TAB_COMPLETION = 4 * ENABLE_FEATURE_TAB_COMPLETION,
760 USERNAME_COMPLETION = 8 * ENABLE_FEATURE_USERNAME_COMPLETION,
761 VI_MODE = 0x10 * ENABLE_FEATURE_EDITING_VI,
762 WITH_PATH_LOOKUP = 0x20,
763 FOR_SHELL = DO_HISTORY | SAVE_HISTORY | TAB_COMPLETION | USERNAME_COMPLETION,
765 typedef struct line_input_t line_input_t;
766 line_input_t *new_line_input_t(int flags);
767 int read_line_input(const char* prompt, char* command, int maxsize, line_input_t *state);
769 int read_line_input(const char* prompt, char* command, int maxsize);
770 #define read_line_input(prompt, command, maxsize, state) \
771 read_line_input(prompt, command, maxsize)
777 enum { COMM_LEN = TASK_COMM_LEN };
779 /* synchronize with sizeof(task_struct.comm) in /usr/include/linux/sched.h */
780 enum { COMM_LEN = 16 };
785 /* Fields are set to 0/NULL if failed to determine (or not requested) */
788 unsigned long stime, utime;
795 /* basename of executable file in call to exec(2), size from */
796 /* sizeof(task_struct.comm) in /usr/include/linux/sched.h */
799 // user/group? - use passwd/group parsing functions
803 PSSCAN_PPID = 1 << 1,
804 PSSCAN_PGID = 1 << 2,
806 PSSCAN_UIDGID = 1 << 4,
807 PSSCAN_COMM = 1 << 5,
809 PSSCAN_STATE = 1 << 7,
811 PSSCAN_STIME = 1 << 9,
812 PSSCAN_UTIME = 1 << 10,
813 /* These are all retrieved from proc/NN/stat in one go: */
814 PSSCAN_STAT = PSSCAN_PPID | PSSCAN_PGID | PSSCAN_SID
815 | PSSCAN_COMM | PSSCAN_STATE
816 | PSSCAN_VSZ | PSSCAN_STIME | PSSCAN_UTIME,
818 procps_status_t* alloc_procps_scan(int flags);
819 void free_procps_scan(procps_status_t* sp);
820 procps_status_t* procps_scan(procps_status_t* sp, int flags);
821 pid_t *find_pid_by_name(const char* procName);
822 pid_t *pidlist_reverse(pid_t *pidList);
825 extern const char bb_uuenc_tbl_base64[];
826 extern const char bb_uuenc_tbl_std[];
827 void bb_uuencode(const unsigned char *s, char *store, const int length, const char *tbl);
829 typedef struct sha1_ctx_t {
834 void sha1_begin(sha1_ctx_t *ctx);
835 void sha1_hash(const void *data, size_t length, sha1_ctx_t *ctx);
836 void *sha1_end(void *resbuf, sha1_ctx_t *ctx);
838 typedef struct md5_ctx_t {
847 void md5_begin(md5_ctx_t *ctx);
848 void md5_hash(const void *data, size_t length, md5_ctx_t *ctx);
849 void *md5_end(void *resbuf, md5_ctx_t *ctx);
851 uint32_t *crc32_filltable(int endian);
854 enum { /* DO NOT CHANGE THESE VALUES! cp.c, mv.c, install.c depend on them. */
855 FILEUTILS_PRESERVE_STATUS = 1,
856 FILEUTILS_DEREFERENCE = 2,
859 FILEUTILS_INTERACTIVE = 0x10,
860 FILEUTILS_MAKE_HARDLINK = 0x20,
861 FILEUTILS_MAKE_SOFTLINK = 0x40,
863 FILEUTILS_PRESERVE_SECURITY_CONTEXT = 0x80,
864 FILEUTILS_SET_SECURITY_CONTEXT = 0x100
868 #define FILEUTILS_CP_OPTSTR "pdRfils" USE_SELINUX("c")
869 extern const char *applet_name;
870 extern const char BB_BANNER[];
872 extern const char bb_msg_full_version[];
873 extern const char bb_msg_memory_exhausted[];
874 extern const char bb_msg_invalid_date[];
875 extern const char bb_msg_read_error[];
876 extern const char bb_msg_write_error[];
877 extern const char bb_msg_unknown[];
878 extern const char bb_msg_can_not_create_raw_socket[];
879 extern const char bb_msg_perm_denied_are_you_root[];
880 extern const char bb_msg_requires_arg[];
881 extern const char bb_msg_invalid_arg[];
882 extern const char bb_msg_standard_input[];
883 extern const char bb_msg_standard_output[];
885 extern const char bb_str_default[];
886 /* NB: (bb_hexdigits_upcase[i] | 0x20) -> lowercase hex digit */
887 extern const char bb_hexdigits_upcase[];
889 extern const char bb_path_mtab_file[];
890 extern const char bb_path_nologin_file[];
891 extern const char bb_path_passwd_file[];
892 extern const char bb_path_shadow_file[];
893 extern const char bb_path_gshadow_file[];
894 extern const char bb_path_group_file[];
895 extern const char bb_path_securetty_file[];
896 extern const char bb_path_motd_file[];
897 extern const char bb_path_wtmp_file[];
898 extern const char bb_dev_null[];
900 extern const int const_int_0;
901 extern const int const_int_1;
906 extern char bb_common_bufsiz1[BUFSIZ+1];
907 /* This struct is deliberately not defined. */
908 /* See docs/keep_data_small.txt */
910 /* Magic prevents this from going into rodata */
911 /* If you want to assign a value, use PTR_TO_GLOBALS = xxx */
912 extern struct globals *const ptr_to_globals;
913 #define PTR_TO_GLOBALS (*(struct globals**)&ptr_to_globals)
915 /* You can change LIBBB_DEFAULT_LOGIN_SHELL, but don't use it,
916 * use bb_default_login_shell and following defines.
917 * If you change LIBBB_DEFAULT_LOGIN_SHELL,
918 * don't forget to change increment constant. */
919 #define LIBBB_DEFAULT_LOGIN_SHELL "-/bin/sh"
920 extern const char bb_default_login_shell[];
922 #define DEFAULT_SHELL (bb_default_login_shell+1)
924 #define DEFAULT_SHELL_SHORT_NAME (bb_default_login_shell+6)
927 #if ENABLE_FEATURE_DEVFS
928 # define CURRENT_VC "/dev/vc/0"
929 # define VC_1 "/dev/vc/1"
930 # define VC_2 "/dev/vc/2"
931 # define VC_3 "/dev/vc/3"
932 # define VC_4 "/dev/vc/4"
933 # define VC_5 "/dev/vc/5"
934 #if defined(__sh__) || defined(__H8300H__) || defined(__H8300S__)
935 /* Yes, this sucks, but both SH (including sh64) and H8 have a SCI(F) for their
936 respective serial ports .. as such, we can't use the common device paths for
938 # define SC_0 "/dev/ttsc/0"
939 # define SC_1 "/dev/ttsc/1"
940 # define SC_FORMAT "/dev/ttsc/%d"
942 # define SC_0 "/dev/tts/0"
943 # define SC_1 "/dev/tts/1"
944 # define SC_FORMAT "/dev/tts/%d"
946 # define VC_FORMAT "/dev/vc/%d"
947 # define LOOP_FORMAT "/dev/loop/%d"
948 # define LOOP_NAME "/dev/loop/"
949 # define FB_0 "/dev/fb/0"
951 # define CURRENT_VC "/dev/tty0"
952 # define VC_1 "/dev/tty1"
953 # define VC_2 "/dev/tty2"
954 # define VC_3 "/dev/tty3"
955 # define VC_4 "/dev/tty4"
956 # define VC_5 "/dev/tty5"
957 #if defined(__sh__) || defined(__H8300H__) || defined(__H8300S__)
958 # define SC_0 "/dev/ttySC0"
959 # define SC_1 "/dev/ttySC1"
960 # define SC_FORMAT "/dev/ttySC%d"
962 # define SC_0 "/dev/ttyS0"
963 # define SC_1 "/dev/ttyS1"
964 # define SC_FORMAT "/dev/ttyS%d"
966 # define VC_FORMAT "/dev/tty%d"
967 # define LOOP_FORMAT "/dev/loop%d"
968 # define LOOP_NAME "/dev/loop"
969 # define FB_0 "/dev/fb0"
972 /* The following devices are the same on devfs and non-devfs systems. */
973 #define CURRENT_TTY "/dev/tty"
974 #define DEV_CONSOLE "/dev/console"
978 /* Stop system and switch power off if possible. */
979 #define RB_POWER_OFF 0x4321fedc
982 /* Make sure we call functions instead of macros. */
996 /* This one is more efficient - we save ~400 bytes */
998 #define isdigit(a) ((unsigned)((a) - '0') <= 9)
1002 #include <dmalloc.h>
1005 #endif /* __LIBBUSYBOX_H__ */