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
29 #include <sys/ioctl.h>
31 #include <sys/socket.h>
34 #include <sys/types.h>
40 /* Try to pull in PATH_MAX */
42 #include <sys/param.h>
51 #ifdef HAVE_SYS_STATFS_H
52 #include <sys/statfs.h>
56 #include <selinux/selinux.h>
57 #include <selinux/context.h>
58 #include <selinux/flask.h>
59 #include <selinux/av_permissions.h>
62 #if ENABLE_LOCALE_SUPPORT
65 #define setlocale(x,y) ((void)0)
70 /* ifdef it out, because it may include <shadow.h> */
71 /* and we may not even _have_ <shadow.h>! */
72 #if ENABLE_FEATURE_SHADOWPASSWDS
76 /* Some libc's don't declare it, help them */
77 extern char **environ;
79 #if defined(__GLIBC__) && __GLIBC__ < 2
80 int vdprintf(int d, const char *format, va_list ap);
82 /* klogctl is in libc's klog.h, but we cheat and not #include that */
83 int klogctl(int type, char *b, int len);
84 /* This is declared here rather than #including <libgen.h> in order to avoid
85 * confusing the two versions of basename. See the dirname/basename man page
87 char *dirname(char *path);
88 /* Include our own copy of struct sysinfo to avoid binary compatibility
89 * problems with Linux 2.4, which changed things. Grumble, grumble. */
91 long uptime; /* Seconds since boot */
92 unsigned long loads[3]; /* 1, 5, and 15 minute load averages */
93 unsigned long totalram; /* Total usable main memory size */
94 unsigned long freeram; /* Available memory size */
95 unsigned long sharedram; /* Amount of shared memory */
96 unsigned long bufferram; /* Memory used by buffers */
97 unsigned long totalswap; /* Total swap space size */
98 unsigned long freeswap; /* swap space still available */
99 unsigned short procs; /* Number of current processes */
100 unsigned short pad; /* Padding needed for m68k */
101 unsigned long totalhigh; /* Total high memory size */
102 unsigned long freehigh; /* Available high memory size */
103 unsigned int mem_unit; /* Memory unit size in bytes */
104 char _f[20 - 2*sizeof(long) - sizeof(int)]; /* Padding: libc5 uses this.. */
106 int sysinfo(struct sysinfo* info);
109 /* Tested to work correctly with all int types (IIRC :]) */
110 #define MAXINT(T) (T)( \
113 : (T)~((T)1 << (sizeof(T)*8-1)) \
116 #define MININT(T) (T)( \
119 : ((T)1 << (sizeof(T)*8-1)) \
122 /* Large file support */
123 /* Note that CONFIG_LFS=y forces bbox to be built with all common ops
124 * (stat, lseek etc) mapped to "largefile" variants by libc.
125 * Practically it means that open() automatically has O_LARGEFILE added
126 * and all filesize/file_offset parameters and struct members are "large"
127 * (in today's world - signed 64bit). For full support of large files,
128 * we need a few helper #defines (below) and careful use of off_t
129 * instead of int/ssize_t. No lseek64(), O_LARGEFILE etc necessary */
131 /* CONFIG_LFS is on */
132 # if ULONG_MAX > 0xffffffff
133 /* "long" is long enough on this system */
134 # define XATOOFF(a) xatoul_range(a, 0, LONG_MAX)
135 /* usage: sz = BB_STRTOOFF(s, NULL, 10); if (errno || sz < 0) die(); */
136 # define BB_STRTOOFF bb_strtoul
137 # define STRTOOFF strtoul
138 /* usage: printf("size: %"OFF_FMT"d (%"OFF_FMT"x)\n", sz, sz); */
141 /* "long" is too short, need "long long" */
142 # define XATOOFF(a) xatoull_range(a, 0, LLONG_MAX)
143 # define BB_STRTOOFF bb_strtoull
144 # define STRTOOFF strtoull
145 # define OFF_FMT "ll"
148 /* CONFIG_LFS is off */
149 # if UINT_MAX == 0xffffffff
150 /* While sizeof(off_t) == sizeof(int), off_t is typedef'ed to long anyway.
151 * gcc will throw warnings on printf("%d", off_t). Crap... */
152 # define XATOOFF(a) xatoi_u(a)
153 # define BB_STRTOOFF bb_strtou
154 # define STRTOOFF strtol
157 # define XATOOFF(a) xatoul_range(a, 0, LONG_MAX)
158 # define BB_STRTOOFF bb_strtoul
159 # define STRTOOFF strtol
163 /* scary. better ideas? (but do *test* them first!) */
164 #define OFF_T_MAX ((off_t)~((off_t)1 << (sizeof(off_t)*8-1)))
166 /* Some useful definitions */
168 #define FALSE ((int) 0)
170 #define TRUE ((int) 1)
172 #define SKIP ((int) 2)
175 #define MTAB_GETMOUNTPT '1'
176 #define MTAB_GETDEVICE '2'
178 #define BUF_SIZE 8192
179 #define EXPAND_ALLOC 1024
181 /* Macros for min/max. */
183 #define MIN(a,b) (((a)<(b))?(a):(b))
187 #define MAX(a,b) (((a)>(b))?(a):(b))
190 /* buffer allocation schemes */
191 #if ENABLE_FEATURE_BUFFERS_GO_ON_STACK
192 #define RESERVE_CONFIG_BUFFER(buffer,len) char buffer[len]
193 #define RESERVE_CONFIG_UBUFFER(buffer,len) unsigned char buffer[len]
194 #define RELEASE_CONFIG_BUFFER(buffer) ((void)0)
196 #if ENABLE_FEATURE_BUFFERS_GO_IN_BSS
197 #define RESERVE_CONFIG_BUFFER(buffer,len) static char buffer[len]
198 #define RESERVE_CONFIG_UBUFFER(buffer,len) static unsigned char buffer[len]
199 #define RELEASE_CONFIG_BUFFER(buffer) ((void)0)
201 #define RESERVE_CONFIG_BUFFER(buffer,len) char *buffer = xmalloc(len)
202 #define RESERVE_CONFIG_UBUFFER(buffer,len) unsigned char *buffer = xmalloc(len)
203 #define RELEASE_CONFIG_BUFFER(buffer) free(buffer)
207 #if defined(__GLIBC__)
208 /* glibc uses __errno_location() to get a ptr to errno */
209 /* We can just memorize it once - no multithreading in busybox :) */
210 extern int *const bb_errno;
212 #define errno (*bb_errno)
215 unsigned long long monotonic_us(void);
216 unsigned monotonic_sec(void);
218 extern void chomp(char *s);
219 extern void trim(char *s);
220 extern char *skip_whitespace(const char *);
221 extern char *skip_non_whitespace(const char *);
223 //TODO: supply a pointer to char[11] buffer (avoid statics)?
224 extern const char *bb_mode_string(mode_t mode);
225 extern int is_directory(const char *name, int followLinks, struct stat *statBuf);
226 enum { /* DO NOT CHANGE THESE VALUES! cp.c, mv.c, install.c depend on them. */
227 FILEUTILS_PRESERVE_STATUS = 1,
228 FILEUTILS_DEREFERENCE = 2,
231 FILEUTILS_INTERACTIVE = 0x10,
232 FILEUTILS_MAKE_HARDLINK = 0x20,
233 FILEUTILS_MAKE_SOFTLINK = 0x40,
235 FILEUTILS_PRESERVE_SECURITY_CONTEXT = 0x80,
236 FILEUTILS_SET_SECURITY_CONTEXT = 0x100
239 #define FILEUTILS_CP_OPTSTR "pdRfils" USE_SELINUX("c")
240 extern int remove_file(const char *path, int flags);
241 /* NB: without FILEUTILS_RECUR in flags, it will basically "cat"
242 * the source, not copy (unless "source" is a directory).
243 * This makes "cp /dev/null file" and "install /dev/null file" (!!!)
244 * work coreutils-compatibly. */
245 extern int copy_file(const char *source, const char *dest, int flags);
248 ACTION_RECURSE = (1 << 0),
249 ACTION_FOLLOWLINKS = (1 << 1),
250 ACTION_FOLLOWLINKS_L0 = (1 << 2),
251 ACTION_DEPTHFIRST = (1 << 3),
252 /*ACTION_REVERSE = (1 << 4), - unused */
254 extern int recursive_action(const char *fileName, unsigned flags,
255 int (*fileAction) (const char *fileName, struct stat* statbuf, void* userData, int depth),
256 int (*dirAction) (const char *fileName, struct stat* statbuf, void* userData, int depth),
257 void* userData, unsigned depth);
258 extern int device_open(const char *device, int mode);
259 enum { GETPTY_BUFSIZE = 16 }; /* more than enough for "/dev/ttyXXX" */
260 extern int getpty(char *line);
261 extern int get_console_fd(void);
262 extern char *find_block_device(const char *path);
263 /* bb_copyfd_XX print read/write errors and return -1 if they occur */
264 extern off_t bb_copyfd_eof(int fd1, int fd2);
265 extern off_t bb_copyfd_size(int fd1, int fd2, off_t size);
266 extern void bb_copyfd_exact_size(int fd1, int fd2, off_t size);
267 /* "short" copy can be detected by return value < size */
268 /* this helper yells "short read!" if param is not -1 */
269 extern void complain_copyfd_and_die(off_t sz) ATTRIBUTE_NORETURN;
270 extern char bb_process_escape_sequence(const char **ptr);
271 /* xxxx_strip version can modify its parameter:
275 * "abc/def/" -> "def" !!
277 extern char *bb_get_last_path_component_strip(char *path);
278 /* "abc/def/" -> "" and it never modifies 'path' */
279 extern char *bb_get_last_path_component_nostrip(const char *path);
281 int ndelay_on(int fd);
282 int ndelay_off(int fd);
283 int close_on_exec_on(int fd);
284 void xdup2(int, int);
285 void xmove_fd(int, int);
288 DIR *xopendir(const char *path);
289 DIR *warn_opendir(const char *path);
291 /* UNUSED: char *xmalloc_realpath(const char *path); */
292 char *xmalloc_readlink(const char *path);
293 char *xmalloc_readlink_or_warn(const char *path);
294 char *xrealloc_getcwd_or_warn(char *cwd);
296 char *xmalloc_follow_symlinks(const char *path);
300 /* bb_signals(BB_FATAL_SIGS, handler) catches all signals which
301 * otherwise would kill us, except for those resulting from bugs:
302 * SIGSEGV, SIGILL, SIGFPE.
303 * Other fatal signals not included (TODO?):
304 * SIGBUS Bus error (bad memory access)
305 * SIGPOLL Pollable event. Synonym of SIGIO
306 * SIGPROF Profiling timer expired
307 * SIGSYS Bad argument to routine
308 * SIGTRAP Trace/breakpoint trap
310 * The only known arch with some of these sigs not fitting
311 * into 32 bits is parisc (SIGXCPU=33, SIGXFSZ=34, SIGSTKFLT=36).
312 * Dance around with long long to guard against that...
314 BB_FATAL_SIGS = (int)(0
318 + (1LL << SIGPIPE) // Write to pipe with no readers
319 + (1LL << SIGQUIT) // Quit from keyboard
320 + (1LL << SIGABRT) // Abort signal from abort(3)
321 + (1LL << SIGALRM) // Timer signal from alarm(2)
322 + (1LL << SIGVTALRM) // Virtual alarm clock
323 + (1LL << SIGXCPU) // CPU time limit exceeded
324 + (1LL << SIGXFSZ) // File size limit exceeded
325 + (1LL << SIGUSR1) // Yes kids, these are also fatal!
329 void bb_signals(int sigs, void (*f)(int));
330 /* Unlike signal() and bb_signals, sets handler with sigaction()
331 * and in a way that while signal handler is run, no other signals
332 * will be blocked: */
333 void bb_signals_recursive(int sigs, void (*f)(int));
334 /* syscalls like read() will be interrupted with EINTR: */
335 void signal_no_SA_RESTART_empty_mask(int sig, void (*handler)(int));
336 /* syscalls like read() won't be interrupted (though select/poll will be): */
337 void signal_SA_RESTART_empty_mask(int sig, void (*handler)(int));
338 void wait_for_any_sig(void);
339 void kill_myself_with_sig(int sig) ATTRIBUTE_NORETURN;
340 void sig_block(int sig);
341 void sig_unblock(int sig);
342 /* Will do sigaction(signum, act, NULL): */
343 int sigaction_set(int sig, const struct sigaction *act);
344 /* SIG_BLOCK/SIG_UNBLOCK all signals: */
345 int sigprocmask_allsigs(int how);
348 void xsetgid(gid_t gid);
349 void xsetuid(uid_t uid);
350 void xchdir(const char *path);
351 void xchroot(const char *path);
352 void xsetenv(const char *key, const char *value);
353 void xunlink(const char *pathname);
354 void xstat(const char *pathname, struct stat *buf);
355 int xopen(const char *pathname, int flags);
356 int xopen3(const char *pathname, int flags, int mode);
357 int open_or_warn(const char *pathname, int flags);
358 int open3_or_warn(const char *pathname, int flags, int mode);
359 int open_or_warn_stdin(const char *pathname);
360 void xrename(const char *oldpath, const char *newpath);
361 int rename_or_warn(const char *oldpath, const char *newpath);
362 off_t xlseek(int fd, off_t offset, int whence);
363 off_t fdlength(int fd);
365 void xpipe(int filedes[2]);
366 /* In this form code with pipes is much more readable */
367 struct fd_pair { int rd; int wr; };
368 #define piped_pair(pair) pipe(&((pair).rd))
369 #define xpiped_pair(pair) xpipe(&((pair).rd))
371 /* Useful for having small structure members/global variables */
372 typedef int8_t socktype_t;
373 typedef int8_t family_t;
374 struct BUG_too_small {
375 char BUG_socktype_t_too_small[(0
382 char BUG_family_t_too_small[(0
399 int xsocket(int domain, int type, int protocol);
400 void xbind(int sockfd, struct sockaddr *my_addr, socklen_t addrlen);
401 void xlisten(int s, int backlog);
402 void xconnect(int s, const struct sockaddr *s_addr, socklen_t addrlen);
403 ssize_t xsendto(int s, const void *buf, size_t len, const struct sockaddr *to,
405 /* SO_REUSEADDR allows a server to rebind to an address that is already
406 * "in use" by old connections to e.g. previous server instance which is
407 * killed or crashed. Without it bind will fail until all such connections
408 * time out. Linux does not allow multiple live binds on same ip:port
409 * regardless of SO_REUSEADDR (unlike some other flavors of Unix).
410 * Turn it on before you call bind(). */
411 void setsockopt_reuseaddr(int fd); /* On Linux this never fails. */
412 int setsockopt_broadcast(int fd);
413 /* NB: returns port in host byte order */
414 unsigned bb_lookup_port(const char *port, const char *protocol, unsigned default_port);
415 typedef struct len_and_sockaddr {
419 struct sockaddr_in sin;
420 #if ENABLE_FEATURE_IPV6
421 struct sockaddr_in6 sin6;
426 LSA_LEN_SIZE = offsetof(len_and_sockaddr, u),
427 LSA_SIZEOF_SA = sizeof(
430 struct sockaddr_in sin;
431 #if ENABLE_FEATURE_IPV6
432 struct sockaddr_in6 sin6;
437 /* Create stream socket, and allocate suitable lsa.
438 * (lsa of correct size and lsa->sa.sa_family (AF_INET/AF_INET6))
439 * af == AF_UNSPEC will result in trying to create IPv6 socket,
440 * and if kernel doesn't support it, IPv4.
442 #if ENABLE_FEATURE_IPV6
443 int xsocket_type(len_and_sockaddr **lsap, int af, int sock_type);
445 int xsocket_type(len_and_sockaddr **lsap, int sock_type);
446 #define xsocket_type(lsap, af, sock_type) xsocket_type((lsap), (sock_type))
448 int xsocket_stream(len_and_sockaddr **lsap);
449 /* Create server socket bound to bindaddr:port. bindaddr can be NULL,
450 * numeric IP ("N.N.N.N") or numeric IPv6 address,
451 * and can have ":PORT" suffix (for IPv6 use "[X:X:...:X]:PORT").
452 * Only if there is no suffix, port argument is used */
453 /* NB: these set SO_REUSEADDR before bind */
454 int create_and_bind_stream_or_die(const char *bindaddr, int port);
455 int create_and_bind_dgram_or_die(const char *bindaddr, int port);
456 /* Create client TCP socket connected to peer:port. Peer cannot be NULL.
457 * Peer can be numeric IP ("N.N.N.N"), numeric IPv6 address or hostname,
458 * and can have ":PORT" suffix (for IPv6 use "[X:X:...:X]:PORT").
459 * If there is no suffix, port argument is used */
460 int create_and_connect_stream_or_die(const char *peer, int port);
461 /* Connect to peer identified by lsa */
462 int xconnect_stream(const len_and_sockaddr *lsa);
463 /* Return malloc'ed len_and_sockaddr with socket address of host:port
464 * Currently will return IPv4 or IPv6 sockaddrs only
465 * (depending on host), but in theory nothing prevents e.g.
466 * UNIX socket address being returned, IPX sockaddr etc...
467 * On error does bb_error_msg and returns NULL */
468 len_and_sockaddr* host2sockaddr(const char *host, int port);
469 /* Version which dies on error */
470 len_and_sockaddr* xhost2sockaddr(const char *host, int port);
471 len_and_sockaddr* xdotted2sockaddr(const char *host, int port);
472 /* Same, useful if you want to force family (e.g. IPv6) */
473 #if !ENABLE_FEATURE_IPV6
474 #define host_and_af2sockaddr(host, port, af) host2sockaddr((host), (port))
475 #define xhost_and_af2sockaddr(host, port, af) xhost2sockaddr((host), (port))
477 len_and_sockaddr* host_and_af2sockaddr(const char *host, int port, sa_family_t af);
478 len_and_sockaddr* xhost_and_af2sockaddr(const char *host, int port, sa_family_t af);
480 /* Assign sin[6]_port member if the socket is an AF_INET[6] one,
481 * otherwise no-op. Useful for ftp.
482 * NB: does NOT do htons() internally, just direct assignment. */
483 void set_nport(len_and_sockaddr *lsa, unsigned port);
484 /* Retrieve sin[6]_port or return -1 for non-INET[6] lsa's */
485 int get_nport(const struct sockaddr *sa);
486 /* Reverse DNS. Returns NULL on failure. */
487 char* xmalloc_sockaddr2host(const struct sockaddr *sa);
488 /* This one doesn't append :PORTNUM */
489 char* xmalloc_sockaddr2host_noport(const struct sockaddr *sa);
490 /* This one also doesn't fall back to dotted IP (returns NULL) */
491 char* xmalloc_sockaddr2hostonly_noport(const struct sockaddr *sa);
492 /* inet_[ap]ton on steroids */
493 char* xmalloc_sockaddr2dotted(const struct sockaddr *sa);
494 char* xmalloc_sockaddr2dotted_noport(const struct sockaddr *sa);
495 // "old" (ipv4 only) API
496 // users: traceroute.c hostname.c - use _list_ of all IPs
497 struct hostent *xgethostbyname(const char *name);
498 // Also mount.c and inetd.c are using gethostbyname(),
499 // + inet_common.c has additional IPv4-only stuff
502 void socket_want_pktinfo(int fd);
503 ssize_t send_to_from(int fd, void *buf, size_t len, int flags,
504 const struct sockaddr *to,
505 const struct sockaddr *from,
507 ssize_t recv_from_to(int fd, void *buf, size_t len, int flags,
508 struct sockaddr *from,
512 char *xstrdup(const char *s);
513 char *xstrndup(const char *s, int n);
514 char *safe_strncpy(char *dst, const char *src, size_t size);
515 /* Guaranteed to NOT be a macro (smallest code). Saves nearly 2k on uclibc.
516 * But potentially slow, don't use in one-billion-times loops */
517 int bb_putchar(int ch);
518 char *xasprintf(const char *format, ...) __attribute__ ((format (printf, 1, 2)));
519 /* Prints unprintable chars ch as ^C or M-c to file
520 * (M-c is used only if ch is ORed with PRINTABLE_META),
521 * else it is printed as-is (except for ch = 0x9b) */
522 enum { PRINTABLE_META = 0x100 };
523 void fputc_printable(int ch, FILE *file);
524 // gcc-4.1.1 still isn't good enough at optimizing it
525 // (+200 bytes compared to macro)
526 //static ALWAYS_INLINE
527 //int LONE_DASH(const char *s) { return s[0] == '-' && !s[1]; }
528 //static ALWAYS_INLINE
529 //int NOT_LONE_DASH(const char *s) { return s[0] != '-' || s[1]; }
530 #define LONE_DASH(s) ((s)[0] == '-' && !(s)[1])
531 #define NOT_LONE_DASH(s) ((s)[0] != '-' || (s)[1])
532 #define LONE_CHAR(s,c) ((s)[0] == (c) && !(s)[1])
533 #define NOT_LONE_CHAR(s,c) ((s)[0] != (c) || (s)[1])
534 #define DOT_OR_DOTDOT(s) ((s)[0] == '.' && (!(s)[1] || ((s)[1] == '.' && !(s)[2])))
536 /* dmalloc will redefine these to it's own implementation. It is safe
537 * to have the prototypes here unconditionally. */
538 extern void *malloc_or_warn(size_t size);
539 extern void *xmalloc(size_t size);
540 extern void *xzalloc(size_t size);
541 extern void *xrealloc(void *old, size_t size);
543 extern ssize_t safe_read(int fd, void *buf, size_t count);
544 extern ssize_t nonblock_safe_read(int fd, void *buf, size_t count);
545 // NB: will return short read on error, not -1,
546 // if some data was read before error occurred
547 extern ssize_t full_read(int fd, void *buf, size_t count);
548 extern void xread(int fd, void *buf, size_t count);
549 extern unsigned char xread_char(int fd);
550 // Reads one line a-la fgets (but doesn't save terminating '\n').
551 // Uses single full_read() call, works only on seekable streams.
552 extern char *reads(int fd, char *buf, size_t count);
553 // Reads one line a-la fgets (but doesn't save terminating '\n').
554 // Reads byte-by-byte. Useful when it is important to not read ahead.
555 // Bytes are appended to pfx (which must be malloced, or NULL).
556 extern char *xmalloc_reads(int fd, char *pfx, size_t *maxsz_p);
557 extern ssize_t read_close(int fd, void *buf, size_t maxsz);
558 extern ssize_t open_read_close(const char *filename, void *buf, size_t maxsz);
559 extern void *xmalloc_open_read_close(const char *filename, size_t *maxsz_p);
561 extern ssize_t safe_write(int fd, const void *buf, size_t count);
562 // NB: will return short write on error, not -1,
563 // if some data was written before error occurred
564 extern ssize_t full_write(int fd, const void *buf, size_t count);
565 extern void xwrite(int fd, const void *buf, size_t count);
567 /* Reads and prints to stdout till eof, then closes FILE. Exits on error: */
568 extern void xprint_and_close_file(FILE *file);
569 /* Reads up to (and including) TERMINATING_STRING: */
570 extern char *xmalloc_fgets_str(FILE *file, const char *terminating_string);
571 /* Chops off TERMINATING_STRING: from the end: */
572 extern char *xmalloc_fgetline_str(FILE *file, const char *terminating_string);
573 /* Reads up to (and including) "\n" or NUL byte */
574 extern char *xmalloc_fgets(FILE *file);
575 /* Chops off '\n' from the end, unlike fgets: */
576 extern char *xmalloc_fgetline(FILE *file);
577 extern char *bb_get_chunk_from_file(FILE *file, int *end);
578 extern void die_if_ferror(FILE *file, const char *msg);
579 extern void die_if_ferror_stdout(void);
580 extern void xfflush_stdout(void);
581 extern void fflush_stdout_and_exit(int retval) ATTRIBUTE_NORETURN;
582 extern int fclose_if_not_stdin(FILE *file);
583 extern FILE *xfopen(const char *filename, const char *mode);
584 /* Prints warning to stderr and returns NULL on failure: */
585 extern FILE *fopen_or_warn(const char *filename, const char *mode);
586 /* "Opens" stdin if filename is special, else just opens file: */
587 extern FILE *xfopen_stdin(const char *filename);
588 extern FILE *fopen_or_warn_stdin(const char *filename);
590 int bb_pstrcmp(const void *a, const void *b);
591 void qsort_string_vector(char **sv, unsigned count);
593 /* Wrapper which restarts poll on EINTR or ENOMEM.
594 * On other errors complains [perror("poll")] and returns.
595 * Warning! May take (much) longer than timeout_ms to return!
596 * If this is a problem, use bare poll and open-code EINTR/ENOMEM handling */
597 int safe_poll(struct pollfd *ufds, nfds_t nfds, int timeout_ms);
599 char *safe_gethostname(void);
601 /* Convert each alpha char in str to lower-case */
602 char* str_tolower(char *str);
604 char *utoa(unsigned n);
606 /* Returns a pointer past the formatted number, does NOT null-terminate */
607 char *utoa_to_buf(unsigned n, char *buf, unsigned buflen);
608 char *itoa_to_buf(int n, char *buf, unsigned buflen);
609 /* Intelligent formatters of bignums */
610 void smart_ulltoa4(unsigned long long ul, char buf[5], const char *scale);
611 void smart_ulltoa5(unsigned long long ul, char buf[5], const char *scale);
612 //TODO: provide pointer to buf (avoid statics)?
613 const char *make_human_readable_str(unsigned long long size,
614 unsigned long block_size, unsigned long display_unit);
615 /* Put a string of hex bytes ("1b2e66fe"...), return advanced pointer */
616 char *bin2hex(char *buf, const char *cp, int count);
618 /* Last element is marked by mult == 0 */
625 /* Using xatoi() instead of naive atoi() is not always convenient -
626 * in many places people want *non-negative* values, but store them
627 * in signed int. Therefore we need this one:
628 * dies if input is not in [0, INT_MAX] range. Also will reject '-0' etc */
629 int xatoi_u(const char *numstr);
630 /* Useful for reading port numbers */
631 uint16_t xatou16(const char *numstr);
634 /* These parse entries in /etc/passwd and /etc/group. This is desirable
635 * for BusyBox since we want to avoid using the glibc NSS stuff, which
636 * increases target size and is often not needed on embedded systems. */
637 long xuname2uid(const char *name);
638 long xgroup2gid(const char *name);
639 /* wrapper: allows string to contain numeric uid or gid */
640 unsigned long get_ug_id(const char *s, long (*xname2id)(const char *));
641 /* from chpst. Does not die, returns 0 on failure */
646 /* always sets uid and gid */
647 int get_uidgid(struct bb_uidgid_t*, const char*, int numeric_ok);
648 /* chown-like handling of "user[:[group]" */
649 void parse_chown_usergroup_or_die(struct bb_uidgid_t *u, char *user_group);
650 /* bb_getpwuid, bb_getgrgid:
651 * bb_getXXXid(buf, bufsz, id) - copy user/group name or id
652 * as a string to buf, return user/group name or NULL
653 * bb_getXXXid(NULL, 0, id) - return user/group name or NULL
654 * bb_getXXXid(NULL, -1, id) - return user/group name or exit
656 char *bb_getpwuid(char *name, int bufsize, long uid);
657 char *bb_getgrgid(char *group, int bufsize, long gid);
658 /* versions which cache results (useful for ps, ls etc) */
659 const char* get_cached_username(uid_t uid);
660 const char* get_cached_groupname(gid_t gid);
661 void clear_username_cache(void);
662 /* internally usernames are saved in fixed-sized char[] buffers */
663 enum { USERNAME_MAX_SIZE = 16 - sizeof(int) };
664 #if ENABLE_FEATURE_CHECK_NAMES
665 void die_if_bad_username(const char* name);
667 #define die_if_bad_username(name) ((void)(name))
670 int execable_file(const char *name);
671 char *find_execable(const char *filename);
672 int exists_execable(const char *filename);
674 /* BB_EXECxx always execs (it's not doing NOFORK/NOEXEC stuff),
675 * but it may exec busybox and call applet instead of searching PATH.
677 #if ENABLE_FEATURE_PREFER_APPLETS
678 int bb_execvp(const char *file, char *const argv[]);
679 #define BB_EXECVP(prog,cmd) bb_execvp(prog,cmd)
680 #define BB_EXECLP(prog,cmd,...) \
681 execlp((find_applet_by_name(prog) >= 0) ? CONFIG_BUSYBOX_EXEC_PATH : prog, \
684 #define BB_EXECVP(prog,cmd) execvp(prog,cmd)
685 #define BB_EXECLP(prog,cmd,...) execlp(prog,cmd, __VA_ARGS__)
688 /* NOMMU friendy fork+exec */
689 pid_t spawn(char **argv);
690 pid_t xspawn(char **argv);
692 int safe_waitpid(int pid, int *wstat, int options);
693 /* Unlike waitpid, waits ONLY for one process.
694 * It's safe to pass negative 'pids' from failed [v]fork -
695 * wait4pid will return -1 (and will not clobber [v]fork's errno).
696 * IOW: rc = wait4pid(spawn(argv));
697 * if (rc < 0) bb_perror_msg("%s", argv[0]);
698 * if (rc > 0) bb_error_msg("exit code: %d", rc);
700 int wait4pid(int pid);
701 int wait_any_nohang(int *wstat);
702 #define wait_crashed(w) ((w) & 127)
703 #define wait_exitcode(w) ((w) >> 8)
704 #define wait_stopsig(w) ((w) >> 8)
705 #define wait_stopped(w) (((w) & 127) == 127)
706 /* wait4pid(spawn(argv)) + NOFORK/NOEXEC (if configured) */
707 int spawn_and_wait(char **argv);
708 struct nofork_save_area {
710 const char *applet_name;
711 int xfunc_error_retval;
712 uint32_t option_mask32;
716 void save_nofork_data(struct nofork_save_area *save);
717 void restore_nofork_data(struct nofork_save_area *save);
718 /* Does NOT check that applet is NOFORK, just blindly runs it */
719 int run_nofork_applet(int applet_no, char **argv);
720 int run_nofork_applet_prime(struct nofork_save_area *old, int applet_no, char **argv);
722 /* Helpers for daemonization.
724 * bb_daemonize(flags) = daemonize, does not compile on NOMMU
726 * bb_daemonize_or_rexec(flags, argv) = daemonizes on MMU (and ignores argv),
727 * rexec's itself on NOMMU with argv passed as command line.
728 * Thus bb_daemonize_or_rexec may cause your <applet>_main() to be re-executed
729 * from the start. (It will detect it and not reexec again second time).
730 * You have to audit carefully that you don't do something twice as a result
731 * (opening files/sockets, parsing config files etc...)!
733 * Both of the above will redirect fd 0,1,2 to /dev/null and drop ctty
734 * (will do setsid()).
736 * forkexit_or_rexec(argv) = bare-bones "fork + parent exits" on MMU,
737 * "vfork + re-exec ourself" on NOMMU. No fd redirection, no setsid().
738 * Currently used for openvt and setsid. On MMU ignores argv.
740 * Helper for network daemons in foreground mode:
742 * bb_sanitize_stdio() = make sure that fd 0,1,2 are opened by opening them
743 * to /dev/null if they are not.
746 DAEMON_CHDIR_ROOT = 1,
747 DAEMON_DEVNULL_STDIO = 2,
748 DAEMON_CLOSE_EXTRA_FDS = 4,
749 DAEMON_ONLY_SANITIZE = 8, /* internal use */
752 void forkexit_or_rexec(void);
753 enum { re_execed = 0 };
754 # define forkexit_or_rexec(argv) forkexit_or_rexec()
755 # define bb_daemonize_or_rexec(flags, argv) bb_daemonize_or_rexec(flags)
756 # define bb_daemonize(flags) bb_daemonize_or_rexec(flags, bogus)
758 void re_exec(char **argv) ATTRIBUTE_NORETURN;
759 void forkexit_or_rexec(char **argv);
760 extern bool re_execed;
761 int BUG_fork_is_unavailable_on_nommu(void);
762 int BUG_daemon_is_unavailable_on_nommu(void);
763 void BUG_bb_daemonize_is_unavailable_on_nommu(void);
764 # define fork() BUG_fork_is_unavailable_on_nommu()
765 # define daemon(a,b) BUG_daemon_is_unavailable_on_nommu()
766 # define bb_daemonize(a) BUG_bb_daemonize_is_unavailable_on_nommu()
768 void bb_daemonize_or_rexec(int flags, char **argv);
769 void bb_sanitize_stdio(void);
770 /* Clear dangerous stuff, set PATH. Return 1 if was run by different user. */
771 int sanitize_env_if_suid(void);
774 extern const char *const bb_argv_dash[]; /* "-", NULL */
775 extern const char *opt_complementary;
776 #if ENABLE_GETOPT_LONG
777 #define No_argument "\0"
778 #define Required_argument "\001"
779 #define Optional_argument "\002"
780 extern const char *applet_long_options;
782 extern uint32_t option_mask32;
783 extern uint32_t getopt32(char **argv, const char *applet_opts, ...);
786 typedef struct llist_t {
788 struct llist_t *link;
790 void llist_add_to(llist_t **old_head, void *data);
791 void llist_add_to_end(llist_t **list_head, void *data);
792 void *llist_pop(llist_t **elm);
793 void llist_unlink(llist_t **head, llist_t *elm);
794 void llist_free(llist_t *elm, void (*freeit)(void *data));
795 llist_t *llist_rev(llist_t *list);
796 /* BTW, surprisingly, changing API to
797 * llist_t *llist_add_to(llist_t *old_head, void *data)
798 * etc does not result in smaller code... */
800 /* start_stop_daemon and udhcpc are special - they want
801 * to create pidfiles regardless of FEATURE_PIDFILE */
802 #if ENABLE_FEATURE_PIDFILE || defined(WANT_PIDFILE)
803 /* True only if we created pidfile which is *file*, not /dev/null etc */
804 extern smallint wrote_pidfile;
805 void write_pidfile(const char *path);
806 #define remove_pidfile(path) do { if (wrote_pidfile) unlink(path); } while (0)
808 enum { wrote_pidfile = 0 };
809 #define write_pidfile(path) ((void)0)
810 #define remove_pidfile(path) ((void)0)
815 LOGMODE_STDIO = (1 << 0),
816 LOGMODE_SYSLOG = (1 << 1) * ENABLE_FEATURE_SYSLOG,
817 LOGMODE_BOTH = LOGMODE_SYSLOG + LOGMODE_STDIO,
819 extern const char *msg_eol;
820 extern smallint logmode;
821 extern int die_sleep;
822 extern int xfunc_error_retval;
823 extern jmp_buf die_jmp;
824 extern void xfunc_die(void) ATTRIBUTE_NORETURN;
825 extern void bb_show_usage(void) ATTRIBUTE_NORETURN;
826 extern void bb_error_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2)));
827 extern void bb_error_msg_and_die(const char *s, ...) __attribute__ ((noreturn, format (printf, 1, 2)));
828 extern void bb_perror_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2)));
829 extern void bb_simple_perror_msg(const char *s);
830 extern void bb_perror_msg_and_die(const char *s, ...) __attribute__ ((noreturn, format (printf, 1, 2)));
831 extern void bb_simple_perror_msg_and_die(const char *s) __attribute__ ((noreturn));
832 extern void bb_herror_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2)));
833 extern void bb_herror_msg_and_die(const char *s, ...) __attribute__ ((noreturn, format (printf, 1, 2)));
834 extern void bb_perror_nomsg_and_die(void) ATTRIBUTE_NORETURN;
835 extern void bb_perror_nomsg(void);
836 extern void bb_info_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2)));
837 extern void bb_verror_msg(const char *s, va_list p, const char *strerr);
839 /* We need to export XXX_main from libbusybox
840 * only if we build "individual" binaries
842 #if ENABLE_FEATURE_INDIVIDUAL
843 #define MAIN_EXTERNALLY_VISIBLE EXTERNALLY_VISIBLE
845 #define MAIN_EXTERNALLY_VISIBLE
849 /* applets which are useful from another applets */
850 int bb_cat(char** argv);
851 int echo_main(int argc, char** argv) MAIN_EXTERNALLY_VISIBLE;
852 int test_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
853 int kill_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
855 void bb_displayroutes(int noresolve, int netstatfmt);
857 int chown_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
859 int gunzip_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
862 int bunzip2_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
864 int bbunpack(char **argv,
865 char* (*make_new_name)(char *filename),
866 USE_DESKTOP(long long) int (*unpacker)(void)
871 int create_icmp_socket(void);
872 int create_icmp6_socket(void);
874 /* This structure defines protocol families and their handlers. */
880 char *(*print) (unsigned char *);
881 const char *(*sprint) (struct sockaddr *, int numeric);
882 int (*input) (/*int type,*/ const char *bufp, struct sockaddr *);
883 void (*herror) (char *text);
884 int (*rprint) (int options);
885 int (*rinput) (int typ, int ext, char **argv);
888 int (*getmask) (char *src, struct sockaddr * mask, char *name);
890 /* This structure defines hardware protocols and their handlers. */
896 char *(*print) (unsigned char *);
897 int (*input) (const char *, struct sockaddr *);
898 int (*activate) (int fd);
899 int suppress_null_addr;
901 extern smallint interface_opt_a;
902 int display_interfaces(char *ifname);
903 const struct aftype *get_aftype(const char *name);
904 const struct hwtype *get_hwtype(const char *name);
905 const struct hwtype *get_hwntype(int type);
908 #ifndef BUILD_INDIVIDUAL
909 extern int find_applet_by_name(const char *name);
910 /* Returns only if applet is not found. */
911 extern void run_applet_and_exit(const char *name, char **argv);
912 extern void run_applet_no_and_exit(int a, char **argv) ATTRIBUTE_NORETURN;
916 extern int match_fstype(const struct mntent *mt, const char *fstypes);
917 extern struct mntent *find_mount_point(const char *name, const char *table);
919 extern void erase_mtab(const char * name);
920 extern unsigned int tty_baud_to_value(speed_t speed);
921 extern speed_t tty_value_to_baud(unsigned int value);
922 extern void bb_warn_ignoring_args(int n);
924 extern int get_linux_version_code(void);
926 extern char *query_loop(const char *device);
927 extern int del_loop(const char *device);
928 /* If *devname is not NULL, use that name, otherwise try to find free one,
929 * malloc and return it in *devname.
930 * return value: 1: read-only loopdev was setup, 0: rw, < 0: error */
931 extern int set_loop(char **devname, const char *file, unsigned long long offset);
934 //TODO: pass buf pointer or return allocated buf (avoid statics)?
935 char *bb_askpass(int timeout, const char * prompt);
936 int bb_ask_confirmation(void);
938 extern int bb_parse_mode(const char* s, mode_t* theMode);
940 char *concat_path_file(const char *path, const char *filename);
941 char *concat_subpath_file(const char *path, const char *filename);
942 const char *bb_basename(const char *name);
943 /* NB: can violate const-ness (similarly to strchr) */
944 char *last_char_is(const char *s, int c);
947 USE_DESKTOP(long long) int uncompress(int fd_in, int fd_out);
948 int inflate(int in, int out);
951 int bb_make_directory(char *path, long mode, int flags);
953 int get_signum(const char *name);
954 const char *get_signame(int number);
955 void print_signames(void);
957 char *bb_simplify_path(const char *path);
960 extern void bb_do_delay(int seconds);
961 extern void change_identity(const struct passwd *pw);
962 extern void run_shell(const char *shell, int loginshell, const char *command, const char **additional_args) ATTRIBUTE_NORETURN;
963 extern void run_shell(const char *shell, int loginshell, const char *command, const char **additional_args);
965 extern void renew_current_security_context(void);
966 extern void set_current_security_context(security_context_t sid);
967 extern context_t set_security_context_component(security_context_t cur_context,
968 char *user, char *role, char *type, char *range);
969 extern void setfscreatecon_or_die(security_context_t scontext);
970 extern void selinux_preserve_fcontext(int fdesc);
972 #define selinux_preserve_fcontext(fdesc) ((void)0)
974 extern void selinux_or_die(void);
975 extern int restricted_shell(const char *shell);
977 /* setup_environment:
978 * if clear_env = 1: cd(pw->pw_dir), clear environment, then set
980 * USER=pw->pw_name, LOGNAME=pw->pw_name
981 * PATH=bb_default_[root_]path
984 * else if change_env = 1:
985 * if not root (if pw->pw_uid != 0):
986 * USER=pw->pw_name, LOGNAME=pw->pw_name
991 extern void setup_environment(const char *shell, int clear_env, int change_env, const struct passwd *pw);
992 extern int correct_password(const struct passwd *pw);
993 /* Returns a ptr to static storage */
994 extern char *pw_encrypt(const char *clear, const char *salt);
995 extern int obscure(const char *old, const char *newval, const struct passwd *pwdp);
997 int index_in_str_array(const char *const string_array[], const char *key);
998 int index_in_strings(const char *strings, const char *key);
999 int index_in_substr_array(const char *const string_array[], const char *key);
1000 int index_in_substrings(const char *strings, const char *key);
1001 const char *nth_string(const char *strings, int n);
1003 extern void print_login_issue(const char *issue_file, const char *tty);
1004 extern void print_login_prompt(void);
1006 /* rnd is additional random input. New one is returned.
1007 * Useful if you call crypt_make_salt many times in a row:
1008 * rnd = crypt_make_salt(buf1, 4, 0);
1009 * rnd = crypt_make_salt(buf2, 4, rnd);
1010 * rnd = crypt_make_salt(buf3, 4, rnd);
1011 * (otherwise we risk having same salt generated)
1013 extern int crypt_make_salt(char *p, int cnt, int rnd);
1015 /* Returns number of lines changed, or -1 on error */
1016 extern int update_passwd(const char *filename, const char *username,
1017 const char *new_pw);
1019 /* NB: typically you want to pass fd 0, not 1. Think 'applet | grep something' */
1020 int get_terminal_width_height(int fd, int *width, int *height);
1022 int ioctl_or_perror(int fd, int request, void *argp, const char *fmt,...) __attribute__ ((format (printf, 4, 5)));
1023 void ioctl_or_perror_and_die(int fd, int request, void *argp, const char *fmt,...) __attribute__ ((format (printf, 4, 5)));
1024 #if ENABLE_IOCTL_HEX2STR_ERROR
1025 int bb_ioctl_or_warn(int fd, int request, void *argp, const char *ioctl_name);
1026 void bb_xioctl(int fd, int request, void *argp, const char *ioctl_name);
1027 #define ioctl_or_warn(fd,request,argp) bb_ioctl_or_warn(fd,request,argp,#request)
1028 #define xioctl(fd,request,argp) bb_xioctl(fd,request,argp,#request)
1030 int bb_ioctl_or_warn(int fd, int request, void *argp);
1031 void bb_xioctl(int fd, int request, void *argp);
1032 #define ioctl_or_warn(fd,request,argp) bb_ioctl_or_warn(fd,request,argp)
1033 #define xioctl(fd,request,argp) bb_xioctl(fd,request,argp)
1036 char *is_in_ino_dev_hashtable(const struct stat *statbuf);
1037 void add_to_ino_dev_hashtable(const struct stat *statbuf, const char *name);
1038 void reset_ino_dev_hashtable(void);
1040 /* At least glibc has horrendously large inline for this, so wrap it */
1041 unsigned long long bb_makedev(unsigned int major, unsigned int minor);
1043 #define makedev(a,b) bb_makedev(a,b)
1047 #if ENABLE_FEATURE_EDITING
1048 /* It's NOT just ENABLEd or disabled. It's a number: */
1049 #ifdef CONFIG_FEATURE_EDITING_HISTORY
1050 #define MAX_HISTORY (CONFIG_FEATURE_EDITING_HISTORY + 0)
1052 #define MAX_HISTORY 0
1054 typedef struct line_input_t {
1056 const char *path_lookup;
1060 USE_FEATURE_EDITING_SAVEHISTORY(const char *hist_file;)
1061 char *history[MAX_HISTORY + 1];
1065 DO_HISTORY = 1 * (MAX_HISTORY > 0),
1066 SAVE_HISTORY = 2 * (MAX_HISTORY > 0) * ENABLE_FEATURE_EDITING_SAVEHISTORY,
1067 TAB_COMPLETION = 4 * ENABLE_FEATURE_TAB_COMPLETION,
1068 USERNAME_COMPLETION = 8 * ENABLE_FEATURE_USERNAME_COMPLETION,
1069 VI_MODE = 0x10 * ENABLE_FEATURE_EDITING_VI,
1070 WITH_PATH_LOOKUP = 0x20,
1071 FOR_SHELL = DO_HISTORY | SAVE_HISTORY | TAB_COMPLETION | USERNAME_COMPLETION,
1073 line_input_t *new_line_input_t(int flags);
1075 * -1 on read errors or EOF, or on bare Ctrl-D,
1076 * 0 on ctrl-C (the line entered is still returned in 'command'),
1077 * >0 length of input string, including terminating '\n'
1079 int read_line_input(const char* prompt, char* command, int maxsize, line_input_t *state);
1081 int read_line_input(const char* prompt, char* command, int maxsize);
1082 #define read_line_input(prompt, command, maxsize, state) \
1083 read_line_input(prompt, command, maxsize)
1088 #ifdef TASK_COMM_LEN
1089 enum { COMM_LEN = TASK_COMM_LEN };
1091 /* synchronize with sizeof(task_struct.comm) in /usr/include/linux/sched.h */
1092 enum { COMM_LEN = 16 };
1095 typedef struct procps_status_t {
1097 uint8_t shift_pages_to_bytes;
1098 uint8_t shift_pages_to_kb;
1099 /* Fields are set to 0/NULL if failed to determine (or not requested) */
1101 USE_SELINUX(char *context;)
1102 /* Everything below must contain no ptrs to malloc'ed data:
1103 * it is memset(0) for each process in procps_scan() */
1104 unsigned long vsz, rss; /* we round it to kbytes */
1105 unsigned long stime, utime;
1106 unsigned long start_time;
1113 unsigned tty_major,tty_minor;
1114 #if ENABLE_FEATURE_TOPMEM
1115 unsigned long mapped_rw;
1116 unsigned long mapped_ro;
1117 unsigned long shared_clean;
1118 unsigned long shared_dirty;
1119 unsigned long private_clean;
1120 unsigned long private_dirty;
1121 unsigned long stack;
1124 /* basename of executable in exec(2), read from /proc/N/stat
1125 * (if executable is symlink or script, it is NOT replaced
1126 * by link target or interpreter name) */
1127 char comm[COMM_LEN];
1128 /* user/group? - use passwd/group parsing functions */
1131 PSSCAN_PID = 1 << 0,
1132 PSSCAN_PPID = 1 << 1,
1133 PSSCAN_PGID = 1 << 2,
1134 PSSCAN_SID = 1 << 3,
1135 PSSCAN_UIDGID = 1 << 4,
1136 PSSCAN_COMM = 1 << 5,
1137 /* PSSCAN_CMD = 1 << 6, - use read_cmdline instead */
1138 PSSCAN_ARGV0 = 1 << 7,
1139 /* PSSCAN_EXE = 1 << 8, - not implemented */
1140 PSSCAN_STATE = 1 << 9,
1141 PSSCAN_VSZ = 1 << 10,
1142 PSSCAN_RSS = 1 << 11,
1143 PSSCAN_STIME = 1 << 12,
1144 PSSCAN_UTIME = 1 << 13,
1145 PSSCAN_TTY = 1 << 14,
1146 PSSCAN_SMAPS = (1 << 15) * ENABLE_FEATURE_TOPMEM,
1147 PSSCAN_ARGVN = (1 << 16) * (ENABLE_PGREP | ENABLE_PKILL),
1148 USE_SELINUX(PSSCAN_CONTEXT = 1 << 17,)
1149 PSSCAN_START_TIME = 1 << 18,
1150 /* These are all retrieved from proc/NN/stat in one go: */
1151 PSSCAN_STAT = PSSCAN_PPID | PSSCAN_PGID | PSSCAN_SID
1152 | PSSCAN_COMM | PSSCAN_STATE
1153 | PSSCAN_VSZ | PSSCAN_RSS
1154 | PSSCAN_STIME | PSSCAN_UTIME | PSSCAN_START_TIME
1157 //procps_status_t* alloc_procps_scan(void);
1158 void free_procps_scan(procps_status_t* sp);
1159 procps_status_t* procps_scan(procps_status_t* sp, int flags);
1160 /* Format cmdline (up to col chars) into char buf[col+1] */
1161 /* Puts [comm] if cmdline is empty (-> process is a kernel thread) */
1162 void read_cmdline(char *buf, int col, unsigned pid, const char *comm);
1163 pid_t *find_pid_by_name(const char* procName);
1164 pid_t *pidlist_reverse(pid_t *pidList);
1167 extern const char bb_uuenc_tbl_base64[];
1168 extern const char bb_uuenc_tbl_std[];
1169 void bb_uuencode(char *store, const void *s, int length, const char *tbl);
1171 typedef struct sha1_ctx_t {
1176 void sha1_begin(sha1_ctx_t *ctx);
1177 void sha1_hash(const void *data, size_t length, sha1_ctx_t *ctx);
1178 void *sha1_end(void *resbuf, sha1_ctx_t *ctx);
1180 typedef struct md5_ctx_t {
1189 void md5_begin(md5_ctx_t *ctx);
1190 void md5_hash(const void *data, size_t length, md5_ctx_t *ctx);
1191 void *md5_end(void *resbuf, md5_ctx_t *ctx);
1193 uint32_t *crc32_filltable(uint32_t *tbl256, int endian);
1196 extern const char *applet_name;
1197 /* "BusyBox vN.N.N (timestamp or extra_version)" */
1198 extern const char bb_banner[];
1199 extern const char bb_msg_memory_exhausted[];
1200 extern const char bb_msg_invalid_date[];
1201 extern const char bb_msg_read_error[];
1202 extern const char bb_msg_write_error[];
1203 extern const char bb_msg_unknown[];
1204 extern const char bb_msg_can_not_create_raw_socket[];
1205 extern const char bb_msg_perm_denied_are_you_root[];
1206 extern const char bb_msg_requires_arg[];
1207 extern const char bb_msg_invalid_arg[];
1208 extern const char bb_msg_standard_input[];
1209 extern const char bb_msg_standard_output[];
1211 extern const char bb_str_default[];
1212 /* NB: (bb_hexdigits_upcase[i] | 0x20) -> lowercase hex digit */
1213 extern const char bb_hexdigits_upcase[];
1215 extern const char bb_path_mtab_file[];
1216 extern const char bb_path_passwd_file[];
1217 extern const char bb_path_shadow_file[];
1218 extern const char bb_path_gshadow_file[];
1219 extern const char bb_path_group_file[];
1220 extern const char bb_path_motd_file[];
1221 extern const char bb_path_wtmp_file[];
1222 extern const char bb_dev_null[];
1223 extern const char bb_busybox_exec_path[];
1224 /* util-linux manpage says /sbin:/bin:/usr/sbin:/usr/bin,
1225 * but I want to save a few bytes here */
1226 extern const char bb_PATH_root_path[]; /* "PATH=/sbin:/usr/sbin:/bin:/usr/bin" */
1227 #define bb_default_root_path (bb_PATH_root_path + sizeof("PATH"))
1228 #define bb_default_path (bb_PATH_root_path + sizeof("PATH=/sbin:/usr/sbin"))
1230 extern const int const_int_0;
1231 extern const int const_int_1;
1237 /* Providing hard guarantee on minimum size (think of BUFSIZ == 128) */
1238 enum { COMMON_BUFSIZE = (BUFSIZ >= 256*sizeof(void*) ? BUFSIZ+1 : 256*sizeof(void*)) };
1239 extern char bb_common_bufsiz1[COMMON_BUFSIZE];
1240 /* This struct is deliberately not defined. */
1241 /* See docs/keep_data_small.txt */
1243 /* '*const' ptr makes gcc optimize code much better.
1244 * Magic prevents ptr_to_globals from going into rodata.
1245 * If you want to assign a value, use SET_PTR_TO_GLOBALS(x) */
1246 extern struct globals *const ptr_to_globals;
1247 /* At least gcc 3.4.6 on mipsel system needs optimization barrier */
1248 #define barrier() asm volatile("":::"memory")
1249 #define SET_PTR_TO_GLOBALS(x) do { \
1250 (*(struct globals**)&ptr_to_globals) = (x); \
1254 /* You can change LIBBB_DEFAULT_LOGIN_SHELL, but don't use it,
1255 * use bb_default_login_shell and following defines.
1256 * If you change LIBBB_DEFAULT_LOGIN_SHELL,
1257 * don't forget to change increment constant. */
1258 #define LIBBB_DEFAULT_LOGIN_SHELL "-/bin/sh"
1259 extern const char bb_default_login_shell[];
1261 #define DEFAULT_SHELL (bb_default_login_shell+1)
1263 #define DEFAULT_SHELL_SHORT_NAME (bb_default_login_shell+6)
1266 #if ENABLE_FEATURE_DEVFS
1267 # define CURRENT_VC "/dev/vc/0"
1268 # define VC_1 "/dev/vc/1"
1269 # define VC_2 "/dev/vc/2"
1270 # define VC_3 "/dev/vc/3"
1271 # define VC_4 "/dev/vc/4"
1272 # define VC_5 "/dev/vc/5"
1273 #if defined(__sh__) || defined(__H8300H__) || defined(__H8300S__)
1274 /* Yes, this sucks, but both SH (including sh64) and H8 have a SCI(F) for their
1275 respective serial ports .. as such, we can't use the common device paths for
1277 # define SC_0 "/dev/ttsc/0"
1278 # define SC_1 "/dev/ttsc/1"
1279 # define SC_FORMAT "/dev/ttsc/%d"
1281 # define SC_0 "/dev/tts/0"
1282 # define SC_1 "/dev/tts/1"
1283 # define SC_FORMAT "/dev/tts/%d"
1285 # define VC_FORMAT "/dev/vc/%d"
1286 # define LOOP_FORMAT "/dev/loop/%d"
1287 # define LOOP_NAMESIZE (sizeof("/dev/loop/") + sizeof(int)*3 + 1)
1288 # define LOOP_NAME "/dev/loop/"
1289 # define FB_0 "/dev/fb/0"
1291 # define CURRENT_VC "/dev/tty0"
1292 # define VC_1 "/dev/tty1"
1293 # define VC_2 "/dev/tty2"
1294 # define VC_3 "/dev/tty3"
1295 # define VC_4 "/dev/tty4"
1296 # define VC_5 "/dev/tty5"
1297 #if defined(__sh__) || defined(__H8300H__) || defined(__H8300S__)
1298 # define SC_0 "/dev/ttySC0"
1299 # define SC_1 "/dev/ttySC1"
1300 # define SC_FORMAT "/dev/ttySC%d"
1302 # define SC_0 "/dev/ttyS0"
1303 # define SC_1 "/dev/ttyS1"
1304 # define SC_FORMAT "/dev/ttyS%d"
1306 # define VC_FORMAT "/dev/tty%d"
1307 # define LOOP_FORMAT "/dev/loop%d"
1308 # define LOOP_NAMESIZE (sizeof("/dev/loop") + sizeof(int)*3 + 1)
1309 # define LOOP_NAME "/dev/loop"
1310 # define FB_0 "/dev/fb0"
1313 /* The following devices are the same on devfs and non-devfs systems. */
1314 #define CURRENT_TTY "/dev/tty"
1315 #define DEV_CONSOLE "/dev/console"
1318 #ifndef RB_POWER_OFF
1319 /* Stop system and switch power off if possible. */
1320 #define RB_POWER_OFF 0x4321fedc
1323 /* Make sure we call functions instead of macros. */
1337 /* This one is more efficient - we save ~400 bytes */
1339 #define isdigit(a) ((unsigned)((a) - '0') <= 9)
1343 #include <dmalloc.h>
1346 #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
1348 #endif /* __LIBBUSYBOX_H__ */