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 GPL.
8 * Licensed under GPLv2, see file LICENSE in this source tree.
24 #if defined __UCLIBC__ /* TODO: and glibc? */
25 /* use inlined versions of these: */
26 # define sigfillset(s) __sigfillset(s)
27 # define sigemptyset(s) __sigemptyset(s)
28 # define sigisemptyset(s) __sigisemptyset(s)
36 /* There are two incompatible basename's, let's not use them! */
37 /* See the dirname/basename man page for details */
38 #include <libgen.h> /* dirname,basename */
40 #define basename dont_use_basename
42 #include <sys/ioctl.h>
44 #include <sys/socket.h>
47 #include <sys/types.h>
48 #if !defined(major) || defined(__GLIBC__)
49 # include <sys/sysmacros.h>
54 #include <sys/param.h>
57 #if ENABLE_FEATURE_SHADOWPASSWDS
58 # if !ENABLE_USE_BB_SHADOW
59 /* If using busybox's shadow implementation, do not include the shadow.h
60 * header as the toolchain may not provide it at all.
65 #if defined(ANDROID) || defined(__ANDROID__)
66 # define endpwent() ((void)0)
67 # define endgrent() ((void)0)
72 #ifdef HAVE_SYS_STATFS_H
73 # include <sys/statfs.h>
75 /* Don't do this here:
76 * #include <sys/sysinfo.h>
77 * Some linux/ includes pull in conflicting definition
78 * of struct sysinfo (only in some toolchanins), which breaks build.
79 * Include sys/sysinfo.h only in those files which need it.
82 # include <selinux/selinux.h>
83 # include <selinux/context.h>
85 #if ENABLE_FEATURE_UTMP
86 # if defined __UCLIBC__ && ( \
87 (UCLIBC_VERSION >= KERNEL_VERSION(0, 9, 32) \
88 && UCLIBC_VERSION < KERNEL_VERSION(0, 9, 34) \
89 && defined __UCLIBC_HAS_UTMPX__ \
91 UCLIBC_VERSION >= KERNEL_VERSION(0, 9, 34) \
95 # elif defined __UCLIBC__
98 # define setutxent setutent
99 # define endutxent endutent
100 # define getutxent getutent
101 # define getutxid getutid
102 # define getutxline getutline
103 # define pututxline pututline
104 # define utmpxname utmpname
105 # define updwtmpx updwtmp
106 # define _PATH_UTMPX _PATH_UTMP
110 # if defined _PATH_UTMP && !defined _PATH_UTMPX
111 # define _PATH_UTMPX _PATH_UTMP
115 #if ENABLE_LOCALE_SUPPORT
118 # define setlocale(x,y) ((void)0)
121 # include <dmalloc.h>
123 /* Just in case libc doesn't define some of these... */
125 #define _PATH_PASSWD "/etc/passwd"
128 #define _PATH_GROUP "/etc/group"
131 #define _PATH_SHADOW "/etc/shadow"
133 #ifndef _PATH_GSHADOW
134 #define _PATH_GSHADOW "/etc/gshadow"
136 #if defined __FreeBSD__ || defined __OpenBSD__
137 # include <netinet/in.h>
138 # include <arpa/inet.h>
139 #elif defined __APPLE__
140 # include <netinet/in.h>
142 # include <arpa/inet.h>
143 //This breaks on bionic:
144 //# if !defined(__socklen_t_defined) && !defined(_SOCKLEN_T_DECLARED)
145 ///* We #define socklen_t *after* includes, otherwise we get
146 // * typedef redefinition errors from system headers
147 // * (in case "is it defined already" detection above failed)
149 //# define socklen_t bb_socklen_t
150 // typedef unsigned socklen_t;
152 //if this is still needed, add a fix along the lines of
153 // ifdef SPECIFIC_BROKEN_LIBC_CHECK / typedef socklen_t / endif
154 //in platform.h instead!
156 #ifndef HAVE_CLEARENV
157 # define clearenv() do { if (environ) environ[0] = NULL; } while (0)
159 #ifndef HAVE_FDATASYNC
160 # define fdatasync fsync
167 /* Some libc's forget to declare these, do it ourself */
169 extern char **environ;
170 #if defined(__GLIBC__) && __GLIBC__ < 2
171 int vdprintf(int d, const char *format, va_list ap);
173 /* klogctl is in libc's klog.h, but we cheat and not #include that */
174 int klogctl(int type, char *b, int len);
176 # define PATH_MAX 256
183 /* Busybox does not use threads, we can speed up stdio. */
184 #ifdef HAVE_UNLOCKED_STDIO
186 # define getc(stream) getc_unlocked(stream)
188 # define getchar() getchar_unlocked()
190 # define putc(c,stream) putc_unlocked(c,stream)
192 # define putchar(c) putchar_unlocked(c)
194 # define fgetc(stream) getc_unlocked(stream)
196 # define fputc(c,stream) putc_unlocked(c,stream)
198 /* Above functions are required by POSIX.1-2008, below ones are extensions */
199 #ifdef HAVE_UNLOCKED_LINE_OPS
201 # define fgets(s,n,stream) fgets_unlocked(s,n,stream)
203 # define fputs(s,stream) fputs_unlocked(s,stream)
204 /* musl <= 1.1.15 does not support fflush_unlocked(NULL) */
206 //# define fflush(stream) fflush_unlocked(stream)
208 # define feof(stream) feof_unlocked(stream)
210 # define ferror(stream) ferror_unlocked(stream)
212 # define fileno(stream) fileno_unlocked(stream)
216 /* Make all declarations hidden (-fvisibility flag only affects definitions) */
217 /* (don't include system headers after this until corresponding pop!) */
218 PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN
221 #if ENABLE_USE_BB_PWD_GRP
225 #if ENABLE_FEATURE_SHADOWPASSWDS
226 # if ENABLE_USE_BB_SHADOW
227 # include "shadow_.h"
231 /* Tested to work correctly with all int types (IIRC :]) */
232 #define MAXINT(T) (T)( \
235 : (T)~((T)1 << (sizeof(T)*8-1)) \
238 #define MININT(T) (T)( \
241 : ((T)1 << (sizeof(T)*8-1)) \
244 /* Large file support */
245 /* Note that CONFIG_LFS=y forces bbox to be built with all common ops
246 * (stat, lseek etc) mapped to "largefile" variants by libc.
247 * Practically it means that open() automatically has O_LARGEFILE added
248 * and all filesize/file_offset parameters and struct members are "large"
249 * (in today's world - signed 64bit). For full support of large files,
250 * we need a few helper #defines (below) and careful use of off_t
251 * instead of int/ssize_t. No lseek64(), O_LARGEFILE etc necessary */
253 /* CONFIG_LFS is on */
254 # if ULONG_MAX > 0xffffffff
255 /* "long" is long enough on this system */
256 typedef unsigned long uoff_t;
257 # define XATOOFF(a) xatoul_range((a), 0, LONG_MAX)
258 /* usage: sz = BB_STRTOOFF(s, NULL, 10); if (errno || sz < 0) die(); */
259 # define BB_STRTOOFF bb_strtoul
260 # define STRTOOFF strtoul
261 /* usage: printf("size: %"OFF_FMT"d (%"OFF_FMT"x)\n", sz, sz); */
264 /* "long" is too short, need "long long" */
265 typedef unsigned long long uoff_t;
266 # define XATOOFF(a) xatoull_range((a), 0, LLONG_MAX)
267 # define BB_STRTOOFF bb_strtoull
268 # define STRTOOFF strtoull
269 # define OFF_FMT "ll"
272 /* CONFIG_LFS is off */
273 # if UINT_MAX == 0xffffffff
274 /* While sizeof(off_t) == sizeof(int), off_t is typedef'ed to long anyway.
275 * gcc will throw warnings on printf("%d", off_t). Crap... */
276 typedef unsigned long uoff_t;
277 # define XATOOFF(a) xatoi_positive(a)
278 # define BB_STRTOOFF bb_strtou
279 # define STRTOOFF strtol
282 typedef unsigned long uoff_t;
283 # define XATOOFF(a) xatoul_range((a), 0, LONG_MAX)
284 # define BB_STRTOOFF bb_strtoul
285 # define STRTOOFF strtol
289 /* scary. better ideas? (but do *test* them first!) */
290 #define OFF_T_MAX ((off_t)~((off_t)1 << (sizeof(off_t)*8-1)))
291 /* Users report bionic to use 32-bit off_t even if LARGEFILE support is requested.
292 * We misdetected that. Don't let it build:
294 struct BUG_off_t_size_is_misdetected {
295 char BUG_off_t_size_is_misdetected[sizeof(off_t) == sizeof(uoff_t) ? 1 : -1];
298 /* Some useful definitions */
300 #define FALSE ((int) 0)
302 #define TRUE ((int) 1)
304 #define SKIP ((int) 2)
306 /* Macros for min/max. */
308 #define MIN(a,b) (((a)<(b))?(a):(b))
312 #define MAX(a,b) (((a)>(b))?(a):(b))
315 /* buffer allocation schemes */
316 #if ENABLE_FEATURE_BUFFERS_GO_ON_STACK
317 #define RESERVE_CONFIG_BUFFER(buffer,len) char buffer[len]
318 #define RESERVE_CONFIG_UBUFFER(buffer,len) unsigned char buffer[len]
319 #define RELEASE_CONFIG_BUFFER(buffer) ((void)0)
321 #if ENABLE_FEATURE_BUFFERS_GO_IN_BSS
322 #define RESERVE_CONFIG_BUFFER(buffer,len) static char buffer[len]
323 #define RESERVE_CONFIG_UBUFFER(buffer,len) static unsigned char buffer[len]
324 #define RELEASE_CONFIG_BUFFER(buffer) ((void)0)
326 #define RESERVE_CONFIG_BUFFER(buffer,len) char *buffer = xmalloc(len)
327 #define RESERVE_CONFIG_UBUFFER(buffer,len) unsigned char *buffer = xmalloc(len)
328 #define RELEASE_CONFIG_BUFFER(buffer) free(buffer)
332 #if defined(__GLIBC__)
333 /* glibc uses __errno_location() to get a ptr to errno */
334 /* We can just memorize it once - no multithreading in busybox :) */
335 extern int *const bb_errno;
337 #define errno (*bb_errno)
340 #if !(ULONG_MAX > 0xffffffff)
341 /* Only 32-bit CPUs need this, 64-bit ones use inlined version */
342 uint64_t bb_bswap_64(uint64_t x) FAST_FUNC;
345 unsigned long long monotonic_ns(void) FAST_FUNC;
346 unsigned long long monotonic_us(void) FAST_FUNC;
347 unsigned long long monotonic_ms(void) FAST_FUNC;
348 unsigned monotonic_sec(void) FAST_FUNC;
350 extern void chomp(char *s) FAST_FUNC;
351 extern void trim(char *s) FAST_FUNC;
352 extern char *skip_whitespace(const char *) FAST_FUNC;
353 extern char *skip_non_whitespace(const char *) FAST_FUNC;
354 extern char *skip_dev_pfx(const char *tty_name) FAST_FUNC;
356 extern char *strrstr(const char *haystack, const char *needle) FAST_FUNC;
358 /* dmalloc will redefine these to it's own implementation. It is safe
359 * to have the prototypes here unconditionally. */
360 void *malloc_or_warn(size_t size) FAST_FUNC RETURNS_MALLOC;
361 void *xmalloc(size_t size) FAST_FUNC RETURNS_MALLOC;
362 void *xzalloc(size_t size) FAST_FUNC RETURNS_MALLOC;
363 void *xrealloc(void *old, size_t size) FAST_FUNC;
364 /* After v = xrealloc_vector(v, SHIFT, idx) it's ok to use
365 * at least v[idx] and v[idx+1], for all idx values.
366 * SHIFT specifies how many new elements are added (1:2, 2:4, ..., 8:256...)
367 * when all elements are used up. New elements are zeroed out.
368 * xrealloc_vector(v, SHIFT, idx) *MUST* be called with consecutive IDXs -
369 * skipping an index is a bad bug - it may miss a realloc!
371 #define xrealloc_vector(vector, shift, idx) \
372 xrealloc_vector_helper((vector), (sizeof((vector)[0]) << 8) + (shift), (idx))
373 void* xrealloc_vector_helper(void *vector, unsigned sizeof_and_shift, int idx) FAST_FUNC;
374 char *xstrdup(const char *s) FAST_FUNC RETURNS_MALLOC;
375 char *xstrndup(const char *s, int n) FAST_FUNC RETURNS_MALLOC;
376 void *xmemdup(const void *s, int n) FAST_FUNC RETURNS_MALLOC;
379 //TODO: supply a pointer to char[11] buffer (avoid statics)?
380 extern const char *bb_mode_string(mode_t mode) FAST_FUNC;
381 extern int is_directory(const char *name, int followLinks) FAST_FUNC;
382 enum { /* cp.c, mv.c, install.c depend on these values. CAREFUL when changing them! */
383 FILEUTILS_PRESERVE_STATUS = 1 << 0, /* -p */
384 FILEUTILS_DEREFERENCE = 1 << 1, /* !-d */
385 FILEUTILS_RECUR = 1 << 2, /* -R */
386 FILEUTILS_FORCE = 1 << 3, /* -f */
387 FILEUTILS_INTERACTIVE = 1 << 4, /* -i */
388 FILEUTILS_MAKE_HARDLINK = 1 << 5, /* -l */
389 FILEUTILS_MAKE_SOFTLINK = 1 << 6, /* -s */
390 FILEUTILS_DEREF_SOFTLINK = 1 << 7, /* -L */
391 FILEUTILS_DEREFERENCE_L0 = 1 << 8, /* -H */
392 /* -a = -pdR (mapped in cp.c) */
393 /* -r = -dR (mapped in cp.c) */
394 /* -P = -d (mapped in cp.c) */
395 FILEUTILS_VERBOSE = (1 << 12) * ENABLE_FEATURE_VERBOSE, /* -v */
396 FILEUTILS_UPDATE = 1 << 13, /* -u */
398 FILEUTILS_PRESERVE_SECURITY_CONTEXT = 1 << 14, /* -c */
400 FILEUTILS_RMDEST = 1 << (15 - !ENABLE_SELINUX), /* --remove-destination */
402 * Hole. cp may have some bits set here,
403 * they should not affect remove_file()/copy_file()
406 FILEUTILS_SET_SECURITY_CONTEXT = 1 << 30,
408 FILEUTILS_IGNORE_CHMOD_ERR = 1 << 31,
410 #define FILEUTILS_CP_OPTSTR "pdRfilsLHarPvu" IF_SELINUX("c")
411 extern int remove_file(const char *path, int flags) FAST_FUNC;
412 /* NB: without FILEUTILS_RECUR in flags, it will basically "cat"
413 * the source, not copy (unless "source" is a directory).
414 * This makes "cp /dev/null file" and "install /dev/null file" (!!!)
415 * work coreutils-compatibly. */
416 extern int copy_file(const char *source, const char *dest, int flags) FAST_FUNC;
419 ACTION_RECURSE = (1 << 0),
420 ACTION_FOLLOWLINKS = (1 << 1),
421 ACTION_FOLLOWLINKS_L0 = (1 << 2),
422 ACTION_DEPTHFIRST = (1 << 3),
423 /*ACTION_REVERSE = (1 << 4), - unused */
424 ACTION_QUIET = (1 << 5),
425 ACTION_DANGLING_OK = (1 << 6),
427 typedef uint8_t recurse_flags_t;
428 extern int recursive_action(const char *fileName, unsigned flags,
429 int FAST_FUNC (*fileAction)(const char *fileName, struct stat* statbuf, void* userData, int depth),
430 int FAST_FUNC (*dirAction)(const char *fileName, struct stat* statbuf, void* userData, int depth),
431 void* userData, unsigned depth) FAST_FUNC;
432 extern int device_open(const char *device, int mode) FAST_FUNC;
433 enum { GETPTY_BUFSIZE = 16 }; /* more than enough for "/dev/ttyXXX" */
434 extern int xgetpty(char *line) FAST_FUNC;
435 extern int get_console_fd_or_die(void) FAST_FUNC;
436 extern void console_make_active(int fd, const int vt_num) FAST_FUNC;
437 extern char *find_block_device(const char *path) FAST_FUNC;
438 /* bb_copyfd_XX print read/write errors and return -1 if they occur */
439 extern off_t bb_copyfd_eof(int fd1, int fd2) FAST_FUNC;
440 extern off_t bb_copyfd_size(int fd1, int fd2, off_t size) FAST_FUNC;
441 extern void bb_copyfd_exact_size(int fd1, int fd2, off_t size) FAST_FUNC;
442 /* "short" copy can be detected by return value < size */
443 /* this helper yells "short read!" if param is not -1 */
444 extern void complain_copyfd_and_die(off_t sz) NORETURN FAST_FUNC;
446 extern char bb_process_escape_sequence(const char **ptr) FAST_FUNC;
447 char* strcpy_and_process_escape_sequences(char *dst, const char *src) FAST_FUNC;
448 /* xxxx_strip version can modify its parameter:
452 * "abc/def/" -> "def" !!
454 char *bb_get_last_path_component_strip(char *path) FAST_FUNC;
455 /* "abc/def/" -> "" and it never modifies 'path' */
456 char *bb_get_last_path_component_nostrip(const char *path) FAST_FUNC;
457 /* Simpler version: does not special case "/" string */
458 const char *bb_basename(const char *name) FAST_FUNC;
459 /* NB: can violate const-ness (similarly to strchr) */
460 char *last_char_is(const char *s, int c) FAST_FUNC;
461 const char* endofname(const char *name) FAST_FUNC;
462 char *is_prefixed_with(const char *string, const char *key) FAST_FUNC;
463 char *is_suffixed_with(const char *string, const char *key) FAST_FUNC;
465 int ndelay_on(int fd) FAST_FUNC;
466 int ndelay_off(int fd) FAST_FUNC;
467 void close_on_exec_on(int fd) FAST_FUNC;
468 void xdup2(int, int) FAST_FUNC;
469 void xmove_fd(int, int) FAST_FUNC;
472 DIR *xopendir(const char *path) FAST_FUNC;
473 DIR *warn_opendir(const char *path) FAST_FUNC;
475 char *xmalloc_realpath(const char *path) FAST_FUNC RETURNS_MALLOC;
476 char *xmalloc_readlink(const char *path) FAST_FUNC RETURNS_MALLOC;
477 char *xmalloc_readlink_or_warn(const char *path) FAST_FUNC RETURNS_MALLOC;
478 /* !RETURNS_MALLOC: it's a realloc-like function */
479 char *xrealloc_getcwd_or_warn(char *cwd) FAST_FUNC;
481 char *xmalloc_follow_symlinks(const char *path) FAST_FUNC RETURNS_MALLOC;
485 /* bb_signals(BB_FATAL_SIGS, handler) catches all signals which
486 * otherwise would kill us, except for those resulting from bugs:
487 * SIGSEGV, SIGILL, SIGFPE.
488 * Other fatal signals not included (TODO?):
489 * SIGBUS Bus error (bad memory access)
490 * SIGPOLL Pollable event. Synonym of SIGIO
491 * SIGPROF Profiling timer expired
492 * SIGSYS Bad argument to routine
493 * SIGTRAP Trace/breakpoint trap
495 * The only known arch with some of these sigs not fitting
496 * into 32 bits is parisc (SIGXCPU=33, SIGXFSZ=34, SIGSTKFLT=36).
497 * Dance around with long long to guard against that...
499 BB_FATAL_SIGS = (int)(0
503 + (1LL << SIGPIPE) // Write to pipe with no readers
504 + (1LL << SIGQUIT) // Quit from keyboard
505 + (1LL << SIGABRT) // Abort signal from abort(3)
506 + (1LL << SIGALRM) // Timer signal from alarm(2)
507 + (1LL << SIGVTALRM) // Virtual alarm clock
508 + (1LL << SIGXCPU) // CPU time limit exceeded
509 + (1LL << SIGXFSZ) // File size limit exceeded
510 + (1LL << SIGUSR1) // Yes kids, these are also fatal!
514 void bb_signals(int sigs, void (*f)(int)) FAST_FUNC;
515 /* Unlike signal() and bb_signals, sets handler with sigaction()
516 * and in a way that while signal handler is run, no other signals
517 * will be blocked; syscalls will not be restarted: */
518 void bb_signals_recursive_norestart(int sigs, void (*f)(int)) FAST_FUNC;
519 /* syscalls like read() will be interrupted with EINTR: */
520 void signal_no_SA_RESTART_empty_mask(int sig, void (*handler)(int)) FAST_FUNC;
521 /* syscalls like read() won't be interrupted (though select/poll will be): */
522 void signal_SA_RESTART_empty_mask(int sig, void (*handler)(int)) FAST_FUNC;
523 void wait_for_any_sig(void) FAST_FUNC;
524 void kill_myself_with_sig(int sig) NORETURN FAST_FUNC;
525 void sig_block(int sig) FAST_FUNC;
526 void sig_unblock(int sig) FAST_FUNC;
527 /* Will do sigaction(signum, act, NULL): */
528 int sigaction_set(int sig, const struct sigaction *act) FAST_FUNC;
529 /* SIG_BLOCK/SIG_UNBLOCK all signals: */
530 int sigprocmask_allsigs(int how) FAST_FUNC;
531 /* Standard handler which just records signo */
532 extern smallint bb_got_signal;
533 void record_signo(int signo); /* not FAST_FUNC! */
536 void xsetgid(gid_t gid) FAST_FUNC;
537 void xsetuid(uid_t uid) FAST_FUNC;
538 void xsetegid(gid_t egid) FAST_FUNC;
539 void xseteuid(uid_t euid) FAST_FUNC;
540 void xchdir(const char *path) FAST_FUNC;
541 void xfchdir(int fd) FAST_FUNC;
542 void xchroot(const char *path) FAST_FUNC;
543 void xsetenv(const char *key, const char *value) FAST_FUNC;
544 void bb_unsetenv(const char *key) FAST_FUNC;
545 void bb_unsetenv_and_free(char *key) FAST_FUNC;
546 void xunlink(const char *pathname) FAST_FUNC;
547 void xstat(const char *pathname, struct stat *buf) FAST_FUNC;
548 void xfstat(int fd, struct stat *buf, const char *errmsg) FAST_FUNC;
549 int open3_or_warn(const char *pathname, int flags, int mode) FAST_FUNC;
550 int open_or_warn(const char *pathname, int flags) FAST_FUNC;
551 int xopen3(const char *pathname, int flags, int mode) FAST_FUNC;
552 int xopen(const char *pathname, int flags) FAST_FUNC;
553 int xopen_nonblocking(const char *pathname) FAST_FUNC;
554 int xopen_as_uid_gid(const char *pathname, int flags, uid_t u, gid_t g) FAST_FUNC;
555 int open_or_warn_stdin(const char *pathname) FAST_FUNC;
556 int xopen_stdin(const char *pathname) FAST_FUNC;
557 void xrename(const char *oldpath, const char *newpath) FAST_FUNC;
558 int rename_or_warn(const char *oldpath, const char *newpath) FAST_FUNC;
559 off_t xlseek(int fd, off_t offset, int whence) FAST_FUNC;
560 int xmkstemp(char *template) FAST_FUNC;
561 off_t fdlength(int fd) FAST_FUNC;
563 uoff_t FAST_FUNC get_volume_size_in_bytes(int fd,
564 const char *override,
565 unsigned override_units,
568 void xpipe(int filedes[2]) FAST_FUNC;
569 /* In this form code with pipes is much more readable */
570 struct fd_pair { int rd; int wr; };
571 #define piped_pair(pair) pipe(&((pair).rd))
572 #define xpiped_pair(pair) xpipe(&((pair).rd))
574 /* Useful for having small structure members/global variables */
575 typedef int8_t socktype_t;
576 typedef int8_t family_t;
577 struct BUG_too_small {
578 char BUG_socktype_t_too_small[(0
585 char BUG_family_t_too_small[(0
602 void parse_datestr(const char *date_str, struct tm *ptm) FAST_FUNC;
603 time_t validate_tm_time(const char *date_str, struct tm *ptm) FAST_FUNC;
604 char *strftime_HHMMSS(char *buf, unsigned len, time_t *tp) FAST_FUNC;
605 char *strftime_YYYYMMDDHHMMSS(char *buf, unsigned len, time_t *tp) FAST_FUNC;
607 int xsocket(int domain, int type, int protocol) FAST_FUNC;
608 void xbind(int sockfd, struct sockaddr *my_addr, socklen_t addrlen) FAST_FUNC;
609 void xlisten(int s, int backlog) FAST_FUNC;
610 void xconnect(int s, const struct sockaddr *s_addr, socklen_t addrlen) FAST_FUNC;
611 ssize_t xsendto(int s, const void *buf, size_t len, const struct sockaddr *to,
612 socklen_t tolen) FAST_FUNC;
614 int setsockopt_int(int fd, int level, int optname, int optval) FAST_FUNC;
615 int setsockopt_1(int fd, int level, int optname) FAST_FUNC;
616 int setsockopt_SOL_SOCKET_int(int fd, int optname, int optval) FAST_FUNC;
617 int setsockopt_SOL_SOCKET_1(int fd, int optname) FAST_FUNC;
618 /* SO_REUSEADDR allows a server to rebind to an address that is already
619 * "in use" by old connections to e.g. previous server instance which is
620 * killed or crashed. Without it bind will fail until all such connections
621 * time out. Linux does not allow multiple live binds on same ip:port
622 * regardless of SO_REUSEADDR (unlike some other flavors of Unix).
623 * Turn it on before you call bind(). */
624 void setsockopt_reuseaddr(int fd) FAST_FUNC; /* On Linux this never fails. */
625 int setsockopt_keepalive(int fd) FAST_FUNC;
626 int setsockopt_broadcast(int fd) FAST_FUNC;
627 int setsockopt_bindtodevice(int fd, const char *iface) FAST_FUNC;
628 /* NB: returns port in host byte order */
629 unsigned bb_lookup_port(const char *port, const char *protocol, unsigned default_port) FAST_FUNC;
630 typedef struct len_and_sockaddr {
634 struct sockaddr_in sin;
635 #if ENABLE_FEATURE_IPV6
636 struct sockaddr_in6 sin6;
641 LSA_LEN_SIZE = offsetof(len_and_sockaddr, u),
642 LSA_SIZEOF_SA = sizeof(
645 struct sockaddr_in sin;
646 #if ENABLE_FEATURE_IPV6
647 struct sockaddr_in6 sin6;
652 /* Create stream socket, and allocate suitable lsa.
653 * (lsa of correct size and lsa->sa.sa_family (AF_INET/AF_INET6))
654 * af == AF_UNSPEC will result in trying to create IPv6 socket,
655 * and if kernel doesn't support it, fall back to IPv4.
656 * This is useful if you plan to bind to resulting local lsa.
658 int xsocket_type(len_and_sockaddr **lsap, int af, int sock_type) FAST_FUNC;
659 int xsocket_stream(len_and_sockaddr **lsap) FAST_FUNC;
660 /* Create server socket bound to bindaddr:port. bindaddr can be NULL,
661 * numeric IP ("N.N.N.N") or numeric IPv6 address,
662 * and can have ":PORT" suffix (for IPv6 use "[X:X:...:X]:PORT").
663 * Only if there is no suffix, port argument is used */
664 /* NB: these set SO_REUSEADDR before bind */
665 int create_and_bind_stream_or_die(const char *bindaddr, int port) FAST_FUNC;
666 int create_and_bind_dgram_or_die(const char *bindaddr, int port) FAST_FUNC;
667 /* Create client TCP socket connected to peer:port. Peer cannot be NULL.
668 * Peer can be numeric IP ("N.N.N.N"), numeric IPv6 address or hostname,
669 * and can have ":PORT" suffix (for IPv6 use "[X:X:...:X]:PORT").
670 * If there is no suffix, port argument is used */
671 int create_and_connect_stream_or_die(const char *peer, int port) FAST_FUNC;
672 /* Connect to peer identified by lsa */
673 int xconnect_stream(const len_and_sockaddr *lsa) FAST_FUNC;
674 /* Get local address of bound or accepted socket */
675 len_and_sockaddr *get_sock_lsa(int fd) FAST_FUNC RETURNS_MALLOC;
676 /* Get remote address of connected or accepted socket */
677 len_and_sockaddr *get_peer_lsa(int fd) FAST_FUNC RETURNS_MALLOC;
678 /* Return malloc'ed len_and_sockaddr with socket address of host:port
679 * Currently will return IPv4 or IPv6 sockaddrs only
680 * (depending on host), but in theory nothing prevents e.g.
681 * UNIX socket address being returned, IPX sockaddr etc...
682 * On error does bb_error_msg and returns NULL */
683 len_and_sockaddr* host2sockaddr(const char *host, int port) FAST_FUNC RETURNS_MALLOC;
684 /* Version which dies on error */
685 len_and_sockaddr* xhost2sockaddr(const char *host, int port) FAST_FUNC RETURNS_MALLOC;
686 len_and_sockaddr* xdotted2sockaddr(const char *host, int port) FAST_FUNC RETURNS_MALLOC;
687 /* Same, useful if you want to force family (e.g. IPv6) */
688 #if !ENABLE_FEATURE_IPV6
689 #define host_and_af2sockaddr(host, port, af) host2sockaddr((host), (port))
690 #define xhost_and_af2sockaddr(host, port, af) xhost2sockaddr((host), (port))
692 len_and_sockaddr* host_and_af2sockaddr(const char *host, int port, sa_family_t af) FAST_FUNC RETURNS_MALLOC;
693 len_and_sockaddr* xhost_and_af2sockaddr(const char *host, int port, sa_family_t af) FAST_FUNC RETURNS_MALLOC;
695 /* Assign sin[6]_port member if the socket is an AF_INET[6] one,
696 * otherwise no-op. Useful for ftp.
697 * NB: does NOT do htons() internally, just direct assignment. */
698 void set_nport(struct sockaddr *sa, unsigned port) FAST_FUNC;
699 /* Retrieve sin[6]_port or return -1 for non-INET[6] lsa's */
700 int get_nport(const struct sockaddr *sa) FAST_FUNC;
701 /* Reverse DNS. Returns NULL on failure. */
702 char* xmalloc_sockaddr2host(const struct sockaddr *sa) FAST_FUNC RETURNS_MALLOC;
703 /* This one doesn't append :PORTNUM */
704 char* xmalloc_sockaddr2host_noport(const struct sockaddr *sa) FAST_FUNC RETURNS_MALLOC;
705 /* This one also doesn't fall back to dotted IP (returns NULL) */
706 char* xmalloc_sockaddr2hostonly_noport(const struct sockaddr *sa) FAST_FUNC RETURNS_MALLOC;
707 /* inet_[ap]ton on steroids */
708 char* xmalloc_sockaddr2dotted(const struct sockaddr *sa) FAST_FUNC RETURNS_MALLOC;
709 char* xmalloc_sockaddr2dotted_noport(const struct sockaddr *sa) FAST_FUNC RETURNS_MALLOC;
710 // "old" (ipv4 only) API
711 // users: traceroute.c hostname.c - use _list_ of all IPs
712 struct hostent *xgethostbyname(const char *name) FAST_FUNC;
713 // Also mount.c and inetd.c are using gethostbyname(),
714 // + inet_common.c has additional IPv4-only stuff
717 #define TLS_MAX_MAC_SIZE 32
718 #define TLS_MAX_KEY_SIZE 32
719 struct tls_handshake_data; /* opaque */
720 typedef struct tls_state {
724 unsigned min_encrypted_len_on_read;
726 uint8_t encrypt_on_write;
738 struct tls_handshake_data *hsd;
742 // Each connection state contains a sequence number, which is
743 // maintained separately for read and write states. The sequence
744 // number MUST be set to zero whenever a connection state is made the
745 // active state. Sequence numbers are of type uint64 and may not
747 /*uint64_t read_seq64_be;*/
748 uint64_t write_seq64_be;
750 uint8_t *client_write_key;
751 uint8_t *server_write_key;
752 uint8_t client_write_MAC_key[TLS_MAX_MAC_SIZE];
753 uint8_t server_write_MAC_k__[TLS_MAX_MAC_SIZE];
754 uint8_t client_write_k__[TLS_MAX_KEY_SIZE];
755 uint8_t server_write_k__[TLS_MAX_KEY_SIZE];
758 static inline tls_state_t *new_tls_state(void)
760 tls_state_t *tls = xzalloc(sizeof(*tls));
763 void tls_handshake(tls_state_t *tls, const char *sni) FAST_FUNC;
764 void tls_run_copy_loop(tls_state_t *tls) FAST_FUNC;
767 void socket_want_pktinfo(int fd) FAST_FUNC;
768 ssize_t send_to_from(int fd, void *buf, size_t len, int flags,
769 const struct sockaddr *to,
770 const struct sockaddr *from,
771 socklen_t tolen) FAST_FUNC;
772 ssize_t recv_from_to(int fd, void *buf, size_t len, int flags,
773 struct sockaddr *from,
775 socklen_t sa_size) FAST_FUNC;
777 uint16_t inet_cksum(uint16_t *addr, int len) FAST_FUNC;
779 void overlapping_strcpy(char *dst, const char *src) FAST_FUNC;
780 char *safe_strncpy(char *dst, const char *src, size_t size) FAST_FUNC;
781 char *strncpy_IFNAMSIZ(char *dst, const char *src) FAST_FUNC;
782 unsigned count_strstr(const char *str, const char *sub) FAST_FUNC;
783 char *xmalloc_substitute_string(const char *src, int count, const char *sub, const char *repl) FAST_FUNC;
784 /* Guaranteed to NOT be a macro (smallest code). Saves nearly 2k on uclibc.
785 * But potentially slow, don't use in one-billion-times loops */
786 int bb_putchar(int ch) FAST_FUNC;
787 /* Note: does not use stdio, writes to fd 2 directly */
788 int bb_putchar_stderr(char ch) FAST_FUNC;
789 char *xasprintf(const char *format, ...) __attribute__ ((format(printf, 1, 2))) FAST_FUNC RETURNS_MALLOC;
790 char *auto_string(char *str) FAST_FUNC;
791 // gcc-4.1.1 still isn't good enough at optimizing it
792 // (+200 bytes compared to macro)
793 //static ALWAYS_INLINE
794 //int LONE_DASH(const char *s) { return s[0] == '-' && !s[1]; }
795 //static ALWAYS_INLINE
796 //int NOT_LONE_DASH(const char *s) { return s[0] != '-' || s[1]; }
797 #define LONE_DASH(s) ((s)[0] == '-' && !(s)[1])
798 #define NOT_LONE_DASH(s) ((s)[0] != '-' || (s)[1])
799 #define LONE_CHAR(s,c) ((s)[0] == (c) && !(s)[1])
800 #define NOT_LONE_CHAR(s,c) ((s)[0] != (c) || (s)[1])
801 #define DOT_OR_DOTDOT(s) ((s)[0] == '.' && (!(s)[1] || ((s)[1] == '.' && !(s)[2])))
803 typedef struct uni_stat_t {
805 unsigned unicode_count;
806 unsigned unicode_width;
808 /* Returns a string with unprintable chars replaced by '?' or
809 * SUBST_WCHAR. This function is unicode-aware. */
810 const char* FAST_FUNC printable_string(uni_stat_t *stats, const char *str);
811 /* Prints unprintable char ch as ^C or M-c to file
812 * (M-c is used only if ch is ORed with PRINTABLE_META),
813 * else it is printed as-is (except for ch = 0x9b) */
814 enum { PRINTABLE_META = 0x100 };
815 void fputc_printable(int ch, FILE *file) FAST_FUNC;
816 /* Return a string that is the printable representation of character ch.
817 * Buffer must hold at least four characters. */
819 VISIBLE_ENDLINE = 1 << 0,
820 VISIBLE_SHOW_TABS = 1 << 1,
822 void visible(unsigned ch, char *buf, int flags) FAST_FUNC;
824 extern ssize_t safe_read(int fd, void *buf, size_t count) FAST_FUNC;
825 extern ssize_t nonblock_immune_read(int fd, void *buf, size_t count) FAST_FUNC;
826 // NB: will return short read on error, not -1,
827 // if some data was read before error occurred
828 extern ssize_t full_read(int fd, void *buf, size_t count) FAST_FUNC;
829 extern void xread(int fd, void *buf, size_t count) FAST_FUNC;
830 extern unsigned char xread_char(int fd) FAST_FUNC;
831 extern ssize_t read_close(int fd, void *buf, size_t maxsz) FAST_FUNC;
832 extern ssize_t open_read_close(const char *filename, void *buf, size_t maxsz) FAST_FUNC;
833 // Reads one line a-la fgets (but doesn't save terminating '\n').
834 // Reads byte-by-byte. Useful when it is important to not read ahead.
835 // Bytes are appended to pfx (which must be malloced, or NULL).
836 extern char *xmalloc_reads(int fd, size_t *maxsz_p) FAST_FUNC;
837 /* Reads block up to *maxsz_p (default: INT_MAX - 4095) */
838 extern void *xmalloc_read(int fd, size_t *maxsz_p) FAST_FUNC RETURNS_MALLOC;
839 /* Returns NULL if file can't be opened (default max size: INT_MAX - 4095) */
840 extern void *xmalloc_open_read_close(const char *filename, size_t *maxsz_p) FAST_FUNC RETURNS_MALLOC;
841 /* Never returns NULL */
842 extern void *xmalloc_xopen_read_close(const char *filename, size_t *maxsz_p) FAST_FUNC RETURNS_MALLOC;
844 #if defined(ARG_MAX) && (ARG_MAX >= 60*1024 || !defined(_SC_ARG_MAX))
845 /* Use _constant_ maximum if: defined && (big enough || no variable one exists) */
846 # define bb_arg_max() ((unsigned)ARG_MAX)
847 #elif defined(_SC_ARG_MAX)
848 /* Else use variable one (a bit more expensive) */
849 unsigned bb_arg_max(void) FAST_FUNC;
851 /* If all else fails */
852 # define bb_arg_max() ((unsigned)(32 * 1024))
854 unsigned bb_clk_tck(void) FAST_FUNC;
856 #define SEAMLESS_COMPRESSION (0 \
857 || ENABLE_FEATURE_SEAMLESS_XZ \
858 || ENABLE_FEATURE_SEAMLESS_LZMA \
859 || ENABLE_FEATURE_SEAMLESS_BZ2 \
860 || ENABLE_FEATURE_SEAMLESS_GZ \
861 || ENABLE_FEATURE_SEAMLESS_Z)
863 #if SEAMLESS_COMPRESSION
864 /* Autodetects gzip/bzip2 formats. fd may be in the middle of the file! */
865 extern int setup_unzip_on_fd(int fd, int fail_if_not_compressed) FAST_FUNC;
866 /* Autodetects .gz etc */
867 extern int open_zipped(const char *fname, int fail_if_not_compressed) FAST_FUNC;
868 extern void *xmalloc_open_zipped_read_close(const char *fname, size_t *maxsz_p) FAST_FUNC RETURNS_MALLOC;
870 # define setup_unzip_on_fd(...) (0)
871 # define open_zipped(fname, fail_if_not_compressed) open((fname), O_RDONLY);
872 # define xmalloc_open_zipped_read_close(fname, maxsz_p) xmalloc_open_read_close((fname), (maxsz_p))
875 extern ssize_t safe_write(int fd, const void *buf, size_t count) FAST_FUNC;
876 // NB: will return short write on error, not -1,
877 // if some data was written before error occurred
878 extern ssize_t full_write(int fd, const void *buf, size_t count) FAST_FUNC;
879 extern void xwrite(int fd, const void *buf, size_t count) FAST_FUNC;
880 extern void xwrite_str(int fd, const char *str) FAST_FUNC;
881 extern ssize_t full_write1_str(const char *str) FAST_FUNC;
882 extern ssize_t full_write2_str(const char *str) FAST_FUNC;
883 extern void xopen_xwrite_close(const char* file, const char *str) FAST_FUNC;
885 /* Close fd, but check for failures (some types of write errors) */
886 extern void xclose(int fd) FAST_FUNC;
888 /* Reads and prints to stdout till eof, then closes FILE. Exits on error: */
889 extern void xprint_and_close_file(FILE *file) FAST_FUNC;
891 /* Reads a line from a text file, up to a newline or NUL byte, inclusive.
892 * Returns malloc'ed char*. If end is NULL '\n' isn't considered
893 * end of line. If end isn't NULL, length of the chunk is stored in it.
894 * Returns NULL if EOF/error.
896 extern char *bb_get_chunk_from_file(FILE *file, int *end) FAST_FUNC;
897 /* Reads up to (and including) TERMINATING_STRING: */
898 extern char *xmalloc_fgets_str(FILE *file, const char *terminating_string) FAST_FUNC RETURNS_MALLOC;
899 /* Same, with limited max size, and returns the length (excluding NUL): */
900 extern char *xmalloc_fgets_str_len(FILE *file, const char *terminating_string, size_t *maxsz_p) FAST_FUNC RETURNS_MALLOC;
901 /* Chops off TERMINATING_STRING from the end: */
902 extern char *xmalloc_fgetline_str(FILE *file, const char *terminating_string) FAST_FUNC RETURNS_MALLOC;
903 /* Reads up to (and including) "\n" or NUL byte: */
904 extern char *xmalloc_fgets(FILE *file) FAST_FUNC RETURNS_MALLOC;
905 /* Chops off '\n' from the end, unlike fgets: */
906 extern char *xmalloc_fgetline(FILE *file) FAST_FUNC RETURNS_MALLOC;
907 /* Same, but doesn't try to conserve space (may have some slack after the end) */
908 /* extern char *xmalloc_fgetline_fast(FILE *file) FAST_FUNC RETURNS_MALLOC; */
910 void die_if_ferror(FILE *file, const char *msg) FAST_FUNC;
911 void die_if_ferror_stdout(void) FAST_FUNC;
912 int fflush_all(void) FAST_FUNC;
913 void fflush_stdout_and_exit(int retval) NORETURN FAST_FUNC;
914 int fclose_if_not_stdin(FILE *file) FAST_FUNC;
915 FILE* xfopen(const char *filename, const char *mode) FAST_FUNC;
916 /* Prints warning to stderr and returns NULL on failure: */
917 FILE* fopen_or_warn(const char *filename, const char *mode) FAST_FUNC;
918 /* "Opens" stdin if filename is special, else just opens file: */
919 FILE* xfopen_stdin(const char *filename) FAST_FUNC;
920 FILE* fopen_or_warn_stdin(const char *filename) FAST_FUNC;
921 FILE* fopen_for_read(const char *path) FAST_FUNC;
922 FILE* xfopen_for_read(const char *path) FAST_FUNC;
923 FILE* fopen_for_write(const char *path) FAST_FUNC;
924 FILE* xfopen_for_write(const char *path) FAST_FUNC;
925 FILE* xfdopen_for_read(int fd) FAST_FUNC;
926 FILE* xfdopen_for_write(int fd) FAST_FUNC;
928 int bb_pstrcmp(const void *a, const void *b) /* not FAST_FUNC! */;
929 void qsort_string_vector(char **sv, unsigned count) FAST_FUNC;
931 /* Wrapper which restarts poll on EINTR or ENOMEM.
932 * On other errors complains [perror("poll")] and returns.
933 * Warning! May take (much) longer than timeout_ms to return!
934 * If this is a problem, use bare poll and open-code EINTR/ENOMEM handling */
935 int safe_poll(struct pollfd *ufds, nfds_t nfds, int timeout_ms) FAST_FUNC;
937 char *safe_gethostname(void) FAST_FUNC;
939 /* Convert each alpha char in str to lower-case */
940 char* str_tolower(char *str) FAST_FUNC;
942 char *utoa(unsigned n) FAST_FUNC;
943 char *itoa(int n) FAST_FUNC;
944 /* Returns a pointer past the formatted number, does NOT null-terminate */
945 char *utoa_to_buf(unsigned n, char *buf, unsigned buflen) FAST_FUNC;
946 char *itoa_to_buf(int n, char *buf, unsigned buflen) FAST_FUNC;
947 /* Intelligent formatters of bignums */
948 char *smart_ulltoa4(unsigned long long ul, char buf[4], const char *scale) FAST_FUNC;
949 char *smart_ulltoa5(unsigned long long ul, char buf[5], const char *scale) FAST_FUNC;
950 /* If block_size == 0, display size without fractional part,
951 * else display (size * block_size) with one decimal digit.
952 * If display_unit == 0, show value no bigger than 1024 with suffix (K,M,G...),
953 * else divide by display_unit and do not use suffix. */
954 #define HUMAN_READABLE_MAX_WIDTH 7 /* "1024.0G" */
955 #define HUMAN_READABLE_MAX_WIDTH_STR "7"
956 //TODO: provide pointer to buf (avoid statics)?
957 const char *make_human_readable_str(unsigned long long size,
958 unsigned long block_size, unsigned long display_unit) FAST_FUNC;
959 /* Put a string of hex bytes ("1b2e66fe"...), return advanced pointer */
960 char *bin2hex(char *dst, const char *src, int count) FAST_FUNC;
962 char* hex2bin(char *dst, const char *src, int count) FAST_FUNC;
964 /* Generate a UUID */
965 void generate_uuid(uint8_t *buf) FAST_FUNC;
967 /* Last element is marked by mult == 0 */
972 extern const struct suffix_mult bkm_suffixes[];
973 #define km_suffixes (bkm_suffixes + 1)
974 extern const struct suffix_mult cwbkMG_suffixes[];
975 #define kMG_suffixes (cwbkMG_suffixes + 3)
976 extern const struct suffix_mult kmg_i_suffixes[];
981 /* Using xatoi() instead of naive atoi() is not always convenient -
982 * in many places people want *non-negative* values, but store them
983 * in signed int. Therefore we need this one:
984 * dies if input is not in [0, INT_MAX] range. Also will reject '-0' etc.
985 * It should really be named xatoi_nonnegative (since it allows 0),
986 * but that would be too long.
988 int xatoi_positive(const char *numstr) FAST_FUNC;
990 /* Useful for reading port numbers */
991 uint16_t xatou16(const char *numstr) FAST_FUNC;
994 /* These parse entries in /etc/passwd and /etc/group. This is desirable
995 * for BusyBox since we want to avoid using the glibc NSS stuff, which
996 * increases target size and is often not needed on embedded systems. */
997 long xuname2uid(const char *name) FAST_FUNC;
998 long xgroup2gid(const char *name) FAST_FUNC;
999 /* wrapper: allows string to contain numeric uid or gid */
1000 unsigned long get_ug_id(const char *s, long FAST_FUNC (*xname2id)(const char *)) FAST_FUNC;
1001 struct bb_uidgid_t {
1005 /* always sets uid and gid; returns 0 on failure */
1006 int get_uidgid(struct bb_uidgid_t*, const char*) FAST_FUNC;
1007 /* always sets uid and gid; exits on failure */
1008 void xget_uidgid(struct bb_uidgid_t*, const char*) FAST_FUNC;
1009 /* chown-like handling of "user[:[group]" */
1010 void parse_chown_usergroup_or_die(struct bb_uidgid_t *u, char *user_group) FAST_FUNC;
1011 struct passwd* xgetpwnam(const char *name) FAST_FUNC;
1012 struct group* xgetgrnam(const char *name) FAST_FUNC;
1013 struct passwd* xgetpwuid(uid_t uid) FAST_FUNC;
1014 struct group* xgetgrgid(gid_t gid) FAST_FUNC;
1015 char* xuid2uname(uid_t uid) FAST_FUNC;
1016 char* xgid2group(gid_t gid) FAST_FUNC;
1017 char* uid2uname(uid_t uid) FAST_FUNC;
1018 char* gid2group(gid_t gid) FAST_FUNC;
1019 char* uid2uname_utoa(uid_t uid) FAST_FUNC;
1020 char* gid2group_utoa(gid_t gid) FAST_FUNC;
1021 /* versions which cache results (useful for ps, ls etc) */
1022 const char* get_cached_username(uid_t uid) FAST_FUNC;
1023 const char* get_cached_groupname(gid_t gid) FAST_FUNC;
1024 void clear_username_cache(void) FAST_FUNC;
1025 /* internally usernames are saved in fixed-sized char[] buffers */
1026 enum { USERNAME_MAX_SIZE = 32 - sizeof(uid_t) };
1027 #if ENABLE_FEATURE_CHECK_NAMES
1028 void die_if_bad_username(const char* name) FAST_FUNC;
1030 #define die_if_bad_username(name) ((void)(name))
1033 #if ENABLE_FEATURE_UTMP
1034 void FAST_FUNC write_new_utmp(pid_t pid, int new_type, const char *tty_name, const char *username, const char *hostname);
1035 void FAST_FUNC update_utmp(pid_t pid, int new_type, const char *tty_name, const char *username, const char *hostname);
1036 void FAST_FUNC update_utmp_DEAD_PROCESS(pid_t pid);
1038 # define write_new_utmp(pid, new_type, tty_name, username, hostname) ((void)0)
1039 # define update_utmp(pid, new_type, tty_name, username, hostname) ((void)0)
1040 # define update_utmp_DEAD_PROCESS(pid) ((void)0)
1044 int file_is_executable(const char *name) FAST_FUNC;
1045 char *find_executable(const char *filename, char **PATHp) FAST_FUNC;
1046 int executable_exists(const char *filename) FAST_FUNC;
1048 /* BB_EXECxx always execs (it's not doing NOFORK/NOEXEC stuff),
1049 * but it may exec busybox and call applet instead of searching PATH.
1051 #if ENABLE_FEATURE_PREFER_APPLETS
1052 int BB_EXECVP(const char *file, char *const argv[]) FAST_FUNC;
1053 #define BB_EXECLP(prog,cmd,...) \
1055 if (find_applet_by_name(prog) >= 0) \
1056 execlp(bb_busybox_exec_path, cmd, __VA_ARGS__); \
1057 execlp(prog, cmd, __VA_ARGS__); \
1060 #define BB_EXECVP(prog,cmd) execvp(prog,cmd)
1061 #define BB_EXECLP(prog,cmd,...) execlp(prog,cmd,__VA_ARGS__)
1063 void BB_EXECVP_or_die(char **argv) NORETURN FAST_FUNC;
1064 void exec_prog_or_SHELL(char **argv) NORETURN FAST_FUNC;
1066 /* xvfork() can't be a _function_, return after vfork in child mangles stack
1067 * in the parent. It must be a macro. */
1070 pid_t bb__xvfork_pid = vfork(); \
1071 if (bb__xvfork_pid < 0) \
1072 bb_perror_msg_and_die("vfork"); \
1076 pid_t xfork(void) FAST_FUNC;
1078 void xvfork_parent_waits_and_exits(void) FAST_FUNC;
1080 /* NOMMU friendy fork+exec: */
1081 pid_t spawn(char **argv) FAST_FUNC;
1082 pid_t xspawn(char **argv) FAST_FUNC;
1084 pid_t safe_waitpid(pid_t pid, int *wstat, int options) FAST_FUNC;
1085 pid_t wait_any_nohang(int *wstat) FAST_FUNC;
1086 /* wait4pid: unlike waitpid, waits ONLY for one process.
1087 * Returns sig + 0x180 if child is killed by signal.
1088 * It's safe to pass negative 'pids' from failed [v]fork -
1089 * wait4pid will return -1 (and will not clobber [v]fork's errno).
1090 * IOW: rc = wait4pid(spawn(argv));
1091 * if (rc < 0) bb_perror_msg("%s", argv[0]);
1092 * if (rc > 0) bb_error_msg("exit code: %d", rc & 0xff);
1094 int wait4pid(pid_t pid) FAST_FUNC;
1095 int wait_for_exitstatus(pid_t pid) FAST_FUNC;
1096 /************************************************************************/
1097 /* spawn_and_wait/run_nofork_applet/run_applet_no_and_exit need to work */
1098 /* carefully together to reinit some global state while not disturbing */
1099 /* other. Be careful if you change them. Consult docs/nofork_noexec.txt */
1100 /************************************************************************/
1101 /* Same as wait4pid(spawn(argv)), but with NOFORK/NOEXEC if configured: */
1102 int spawn_and_wait(char **argv) FAST_FUNC;
1103 /* Does NOT check that applet is NOFORK, just blindly runs it */
1104 int run_nofork_applet(int applet_no, char **argv) FAST_FUNC;
1105 #ifndef BUILD_INDIVIDUAL
1106 extern int find_applet_by_name(const char *name) FAST_FUNC;
1107 extern void run_applet_no_and_exit(int a, char **argv) NORETURN FAST_FUNC;
1110 /* Helpers for daemonization.
1112 * bb_daemonize(flags) = daemonize, does not compile on NOMMU
1114 * bb_daemonize_or_rexec(flags, argv) = daemonizes on MMU (and ignores argv),
1115 * rexec's itself on NOMMU with argv passed as command line.
1116 * Thus bb_daemonize_or_rexec may cause your <applet>_main() to be re-executed
1117 * from the start. (It will detect it and not reexec again second time).
1118 * You have to audit carefully that you don't do something twice as a result
1119 * (opening files/sockets, parsing config files etc...)!
1121 * Both of the above will redirect fd 0,1,2 to /dev/null and drop ctty
1122 * (will do setsid()).
1124 * fork_or_rexec(argv) = bare-bones fork on MMU,
1125 * "vfork + re-exec ourself" on NOMMU. No fd redirection, no setsid().
1126 * On MMU ignores argv.
1128 * Helper for network daemons in foreground mode:
1130 * bb_sanitize_stdio() = make sure that fd 0,1,2 are opened by opening them
1131 * to /dev/null if they are not.
1134 DAEMON_CHDIR_ROOT = 1,
1135 DAEMON_DEVNULL_STDIO = 2,
1136 DAEMON_CLOSE_EXTRA_FDS = 4,
1137 DAEMON_ONLY_SANITIZE = 8, /* internal use */
1138 DAEMON_DOUBLE_FORK = 16, /* double fork to avoid controlling tty */
1141 enum { re_execed = 0 };
1142 # define fork_or_rexec(argv) xfork()
1143 # define bb_daemonize_or_rexec(flags, argv) bb_daemonize_or_rexec(flags)
1144 # define bb_daemonize(flags) bb_daemonize_or_rexec(flags, bogus)
1146 extern bool re_execed;
1147 /* Note: re_exec() and fork_or_rexec() do argv[0][0] |= 0x80 on NOMMU!
1148 * _Parent_ needs to undo it if it doesn't want to have argv[0] mangled.
1150 void re_exec(char **argv) NORETURN FAST_FUNC;
1151 pid_t fork_or_rexec(char **argv) FAST_FUNC;
1152 int BUG_fork_is_unavailable_on_nommu(void) FAST_FUNC;
1153 int BUG_daemon_is_unavailable_on_nommu(void) FAST_FUNC;
1154 void BUG_bb_daemonize_is_unavailable_on_nommu(void) FAST_FUNC;
1155 # define fork() BUG_fork_is_unavailable_on_nommu()
1156 # define xfork() BUG_fork_is_unavailable_on_nommu()
1157 # define daemon(a,b) BUG_daemon_is_unavailable_on_nommu()
1158 # define bb_daemonize(a) BUG_bb_daemonize_is_unavailable_on_nommu()
1160 void bb_daemonize_or_rexec(int flags, char **argv) FAST_FUNC;
1161 void bb_sanitize_stdio(void) FAST_FUNC;
1162 /* Clear dangerous stuff, set PATH. Return 1 if was run by different user. */
1163 int sanitize_env_if_suid(void) FAST_FUNC;
1166 char* single_argv(char **argv) FAST_FUNC;
1167 extern const char *const bb_argv_dash[]; /* "-", NULL */
1168 extern const char *opt_complementary;
1169 #if ENABLE_LONG_OPTS || ENABLE_FEATURE_GETOPT_LONG
1170 #define No_argument "\0"
1171 #define Required_argument "\001"
1172 #define Optional_argument "\002"
1173 extern const char *applet_long_options;
1175 extern uint32_t option_mask32;
1176 extern uint32_t getopt32(char **argv, const char *applet_opts, ...) FAST_FUNC;
1179 /* Having next pointer as a first member allows easy creation
1180 * of "llist-compatible" structs, and using llist_FOO functions
1183 typedef struct llist_t {
1184 struct llist_t *link;
1187 void llist_add_to(llist_t **old_head, void *data) FAST_FUNC;
1188 void llist_add_to_end(llist_t **list_head, void *data) FAST_FUNC;
1189 void *llist_pop(llist_t **elm) FAST_FUNC;
1190 void llist_unlink(llist_t **head, llist_t *elm) FAST_FUNC;
1191 void llist_free(llist_t *elm, void (*freeit)(void *data)) FAST_FUNC;
1192 llist_t *llist_rev(llist_t *list) FAST_FUNC;
1193 llist_t *llist_find_str(llist_t *first, const char *str) FAST_FUNC;
1194 /* BTW, surprisingly, changing API to
1195 * llist_t *llist_add_to(llist_t *old_head, void *data)
1196 * etc does not result in smaller code... */
1198 /* start_stop_daemon and udhcpc are special - they want
1199 * to create pidfiles regardless of FEATURE_PIDFILE */
1200 #if ENABLE_FEATURE_PIDFILE || defined(WANT_PIDFILE)
1201 /* True only if we created pidfile which is *file*, not /dev/null etc */
1202 extern smallint wrote_pidfile;
1203 void write_pidfile(const char *path) FAST_FUNC;
1204 #define remove_pidfile(path) do { if (wrote_pidfile) unlink(path); } while (0)
1206 enum { wrote_pidfile = 0 };
1207 #define write_pidfile(path) ((void)0)
1208 #define remove_pidfile(path) ((void)0)
1213 LOGMODE_STDIO = (1 << 0),
1214 LOGMODE_SYSLOG = (1 << 1) * ENABLE_FEATURE_SYSLOG,
1215 LOGMODE_BOTH = LOGMODE_SYSLOG + LOGMODE_STDIO,
1217 extern const char *msg_eol;
1218 extern smallint syslog_level;
1219 extern smallint logmode;
1220 extern uint8_t xfunc_error_retval;
1221 extern void (*die_func)(void);
1222 extern void xfunc_die(void) NORETURN FAST_FUNC;
1223 extern void bb_show_usage(void) NORETURN FAST_FUNC;
1224 extern void bb_error_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2))) FAST_FUNC;
1225 extern void bb_error_msg_and_die(const char *s, ...) __attribute__ ((noreturn, format (printf, 1, 2))) FAST_FUNC;
1226 extern void bb_perror_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2))) FAST_FUNC;
1227 extern void bb_simple_perror_msg(const char *s) FAST_FUNC;
1228 extern void bb_perror_msg_and_die(const char *s, ...) __attribute__ ((noreturn, format (printf, 1, 2))) FAST_FUNC;
1229 extern void bb_simple_perror_msg_and_die(const char *s) NORETURN FAST_FUNC;
1230 extern void bb_herror_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2))) FAST_FUNC;
1231 extern void bb_herror_msg_and_die(const char *s, ...) __attribute__ ((noreturn, format (printf, 1, 2))) FAST_FUNC;
1232 extern void bb_perror_nomsg_and_die(void) NORETURN FAST_FUNC;
1233 extern void bb_perror_nomsg(void) FAST_FUNC;
1234 extern void bb_verror_msg(const char *s, va_list p, const char *strerr) FAST_FUNC;
1235 extern void bb_logenv_override(void) FAST_FUNC;
1237 /* We need to export XXX_main from libbusybox
1238 * only if we build "individual" binaries
1240 #if ENABLE_FEATURE_INDIVIDUAL
1241 #define MAIN_EXTERNALLY_VISIBLE EXTERNALLY_VISIBLE
1243 #define MAIN_EXTERNALLY_VISIBLE
1247 /* Applets which are useful from another applets */
1248 int bb_cat(char** argv);
1249 /* If shell needs them, they exist even if not enabled as applets */
1250 int echo_main(int argc, char** argv) IF_ECHO(MAIN_EXTERNALLY_VISIBLE);
1251 int printf_main(int argc, char **argv) IF_PRINTF(MAIN_EXTERNALLY_VISIBLE);
1252 int test_main(int argc, char **argv)
1253 #if ENABLE_TEST || ENABLE_TEST1 || ENABLE_TEST2
1254 MAIN_EXTERNALLY_VISIBLE
1257 int kill_main(int argc, char **argv)
1258 #if ENABLE_KILL || ENABLE_KILLALL || ENABLE_KILLALL5
1259 MAIN_EXTERNALLY_VISIBLE
1262 /* Similar, but used by chgrp, not shell */
1263 int chown_main(int argc, char **argv) IF_CHOWN(MAIN_EXTERNALLY_VISIBLE);
1265 int ls_main(int argc, char **argv) IF_LS(MAIN_EXTERNALLY_VISIBLE);
1266 /* Don't need IF_xxx() guard for these */
1267 int gunzip_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
1268 int bunzip2_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
1271 void bb_displayroutes(int noresolve, int netstatfmt) FAST_FUNC;
1276 /* This structure defines protocol families and their handlers. */
1282 char* FAST_FUNC (*print)(unsigned char *);
1283 const char* FAST_FUNC (*sprint)(struct sockaddr *, int numeric);
1284 int FAST_FUNC (*input)(/*int type,*/ const char *bufp, struct sockaddr *);
1285 void FAST_FUNC (*herror)(char *text);
1286 int FAST_FUNC (*rprint)(int options);
1287 int FAST_FUNC (*rinput)(int typ, int ext, char **argv);
1288 /* may modify src */
1289 int FAST_FUNC (*getmask)(char *src, struct sockaddr *mask, char *name);
1291 /* This structure defines hardware protocols and their handlers. */
1297 char* FAST_FUNC (*print)(unsigned char *);
1298 int FAST_FUNC (*input)(const char *, struct sockaddr *);
1299 int FAST_FUNC (*activate)(int fd);
1300 int suppress_null_addr;
1302 extern smallint interface_opt_a;
1303 int display_interfaces(char *ifname) FAST_FUNC;
1304 int in_ether(const char *bufp, struct sockaddr *sap) FAST_FUNC;
1305 #if ENABLE_FEATURE_HWIB
1306 int in_ib(const char *bufp, struct sockaddr *sap) FAST_FUNC;
1308 #define in_ib(a, b) 1 /* fail */
1310 const struct aftype *get_aftype(const char *name) FAST_FUNC;
1311 const struct hwtype *get_hwtype(const char *name) FAST_FUNC;
1312 const struct hwtype *get_hwntype(int type) FAST_FUNC;
1315 #ifdef HAVE_MNTENT_H
1316 extern int match_fstype(const struct mntent *mt, const char *fstypes) FAST_FUNC;
1317 extern struct mntent *find_mount_point(const char *name, int subdir_too) FAST_FUNC;
1319 extern void erase_mtab(const char * name) FAST_FUNC;
1320 extern unsigned int tty_baud_to_value(speed_t speed) FAST_FUNC;
1321 extern speed_t tty_value_to_baud(unsigned int value) FAST_FUNC;
1323 extern void bb_warn_ignoring_args(char *arg) FAST_FUNC;
1325 # define bb_warn_ignoring_args(arg) ((void)0)
1328 extern int get_linux_version_code(void) FAST_FUNC;
1330 extern char *query_loop(const char *device) FAST_FUNC;
1331 extern int del_loop(const char *device) FAST_FUNC;
1332 /* If *devname is not NULL, use that name, otherwise try to find free one,
1333 * malloc and return it in *devname.
1334 * return value: 1: read-only loopdev was setup, 0: rw, < 0: error */
1335 extern int set_loop(char **devname, const char *file, unsigned long long offset, int ro) FAST_FUNC;
1337 /* Like bb_ask below, but asks on stdin with no timeout. */
1338 char *bb_ask_stdin(const char * prompt) FAST_FUNC;
1339 //TODO: pass buf pointer or return allocated buf (avoid statics)?
1340 char *bb_ask(const int fd, int timeout, const char * prompt) FAST_FUNC;
1341 int bb_ask_confirmation(void) FAST_FUNC;
1343 /* Returns -1 if input is invalid. current_mode is a base for e.g. "u+rw" */
1344 int bb_parse_mode(const char* s, unsigned cur_mode) FAST_FUNC;
1347 * Config file parser
1350 PARSE_COLLAPSE = 0x00010000, // treat consecutive delimiters as one
1351 PARSE_TRIM = 0x00020000, // trim leading and trailing delimiters
1352 // TODO: COLLAPSE and TRIM seem to always go in pair
1353 PARSE_GREEDY = 0x00040000, // last token takes entire remainder of the line
1354 PARSE_MIN_DIE = 0x00100000, // die if < min tokens found
1355 // keep a copy of current line
1356 PARSE_KEEP_COPY = 0x00200000 * ENABLE_FEATURE_CROND_D,
1357 PARSE_EOL_COMMENTS = 0x00400000, // comments are recognized even if they aren't the first char
1359 // * remove leading and trailing delimiters and collapse
1360 // multiple delimiters into one
1361 // * warn and continue if less than mintokens delimiters found
1362 // * grab everything into last token
1363 // * comments are recognized even if they aren't the first char
1364 PARSE_NORMAL = PARSE_COLLAPSE | PARSE_TRIM | PARSE_GREEDY | PARSE_EOL_COMMENTS,
1366 typedef struct parser_t {
1370 size_t line_alloc, nline_alloc;
1373 parser_t* config_open(const char *filename) FAST_FUNC;
1374 parser_t* config_open2(const char *filename, FILE* FAST_FUNC (*fopen_func)(const char *path)) FAST_FUNC;
1375 /* delims[0] is a comment char (use '\0' to disable), the rest are token delimiters */
1376 int config_read(parser_t *parser, char **tokens, unsigned flags, const char *delims) FAST_FUNC;
1377 #define config_read(parser, tokens, max, min, str, flags) \
1378 config_read(parser, tokens, ((flags) | (((min) & 0xFF) << 8) | ((max) & 0xFF)), str)
1379 void config_close(parser_t *parser) FAST_FUNC;
1381 /* Concatenate path and filename to new allocated buffer.
1382 * Add "/" only as needed (no duplicate "//" are produced).
1383 * If path is NULL, it is assumed to be "/".
1384 * filename should not be NULL. */
1385 char *concat_path_file(const char *path, const char *filename) FAST_FUNC;
1386 /* Returns NULL on . and .. */
1387 char *concat_subpath_file(const char *path, const char *filename) FAST_FUNC;
1390 int bb_make_directory(char *path, long mode, int flags) FAST_FUNC;
1392 int get_signum(const char *name) FAST_FUNC;
1393 const char *get_signame(int number) FAST_FUNC;
1394 void print_signames(void) FAST_FUNC;
1396 char *bb_simplify_path(const char *path) FAST_FUNC;
1397 /* Returns ptr to NUL */
1398 char *bb_simplify_abs_path_inplace(char *path) FAST_FUNC;
1400 #ifndef LOGIN_FAIL_DELAY
1401 #define LOGIN_FAIL_DELAY 3
1403 extern void bb_do_delay(int seconds) FAST_FUNC;
1404 extern void change_identity(const struct passwd *pw) FAST_FUNC;
1405 extern void run_shell(const char *shell, int loginshell, const char **args) NORETURN FAST_FUNC;
1407 /* Returns $SHELL, getpwuid(getuid())->pw_shell, or DEFAULT_SHELL.
1408 * Note that getpwuid result might need xstrdup'ing
1409 * if there is a possibility of intervening getpwxxx() calls.
1411 const char *get_shell_name(void) FAST_FUNC;
1414 extern void renew_current_security_context(void) FAST_FUNC;
1415 extern void set_current_security_context(security_context_t sid) FAST_FUNC;
1416 extern context_t set_security_context_component(security_context_t cur_context,
1417 char *user, char *role, char *type, char *range) FAST_FUNC;
1418 extern void setfscreatecon_or_die(security_context_t scontext) FAST_FUNC;
1419 extern void selinux_preserve_fcontext(int fdesc) FAST_FUNC;
1421 #define selinux_preserve_fcontext(fdesc) ((void)0)
1423 extern void selinux_or_die(void) FAST_FUNC;
1426 /* setup_environment:
1427 * if chdir pw->pw_dir: ok: else if to_tmp == 1: goto /tmp else: goto / or die
1428 * if clear_env = 1: cd(pw->pw_dir), clear environment, then set
1430 * USER=pw->pw_name, LOGNAME=pw->pw_name
1431 * PATH=bb_default_[root_]path
1434 * else if change_env = 1:
1435 * if not root (if pw->pw_uid != 0):
1436 * USER=pw->pw_name, LOGNAME=pw->pw_name
1441 #define SETUP_ENV_CHANGEENV (1 << 0)
1442 #define SETUP_ENV_CLEARENV (1 << 1)
1443 #define SETUP_ENV_TO_TMP (1 << 2)
1444 #define SETUP_ENV_NO_CHDIR (1 << 4)
1445 void setup_environment(const char *shell, int flags, const struct passwd *pw) FAST_FUNC;
1446 void nuke_str(char *str) FAST_FUNC;
1447 int check_password(const struct passwd *pw, const char *plaintext) FAST_FUNC;
1448 int ask_and_check_password_extended(const struct passwd *pw, int timeout, const char *prompt) FAST_FUNC;
1449 int ask_and_check_password(const struct passwd *pw) FAST_FUNC;
1450 /* Returns a malloced string */
1451 #if !ENABLE_USE_BB_CRYPT
1452 #define pw_encrypt(clear, salt, cleanup) pw_encrypt(clear, salt)
1454 extern char *pw_encrypt(const char *clear, const char *salt, int cleanup) FAST_FUNC;
1455 extern int obscure(const char *old, const char *newval, const struct passwd *pwdp) FAST_FUNC;
1457 * rnd is additional random input. New one is returned.
1458 * Useful if you call crypt_make_salt many times in a row:
1459 * rnd = crypt_make_salt(buf1, 4, 0);
1460 * rnd = crypt_make_salt(buf2, 4, rnd);
1461 * rnd = crypt_make_salt(buf3, 4, rnd);
1462 * (otherwise we risk having same salt generated)
1464 extern int crypt_make_salt(char *p, int cnt /*, int rnd*/) FAST_FUNC;
1465 /* "$N$" + sha_salt_16_bytes + NUL */
1466 #define MAX_PW_SALT_LEN (3 + 16 + 1)
1467 extern char* crypt_make_pw_salt(char p[MAX_PW_SALT_LEN], const char *algo) FAST_FUNC;
1470 /* Returns number of lines changed, or -1 on error */
1471 #if !(ENABLE_FEATURE_ADDUSER_TO_GROUP || ENABLE_FEATURE_DEL_USER_FROM_GROUP)
1472 #define update_passwd(filename, username, data, member) \
1473 update_passwd(filename, username, data)
1475 extern int update_passwd(const char *filename,
1476 const char *username,
1478 const char *member) FAST_FUNC;
1480 int index_in_str_array(const char *const string_array[], const char *key) FAST_FUNC;
1481 int index_in_strings(const char *strings, const char *key) FAST_FUNC;
1482 int index_in_substr_array(const char *const string_array[], const char *key) FAST_FUNC;
1483 int index_in_substrings(const char *strings, const char *key) FAST_FUNC;
1484 const char *nth_string(const char *strings, int n) FAST_FUNC;
1486 extern void print_login_issue(const char *issue_file, const char *tty) FAST_FUNC;
1487 extern void print_login_prompt(void) FAST_FUNC;
1489 char *xmalloc_ttyname(int fd) FAST_FUNC RETURNS_MALLOC;
1490 /* NB: typically you want to pass fd 0, not 1. Think 'applet | grep something' */
1491 int get_terminal_width_height(int fd, unsigned *width, unsigned *height) FAST_FUNC;
1492 int get_terminal_width(int fd) FAST_FUNC;
1494 int tcsetattr_stdin_TCSANOW(const struct termios *tp) FAST_FUNC;
1495 #define TERMIOS_CLEAR_ISIG (1 << 0)
1496 #define TERMIOS_RAW_CRNL (1 << 1)
1497 #define TERMIOS_RAW_INPUT (1 << 2)
1498 int set_termios_to_raw(int fd, struct termios *oldterm, int flags) FAST_FUNC;
1500 /* NB: "unsigned request" is crucial! "int request" will break some arches! */
1501 int ioctl_or_perror(int fd, unsigned request, void *argp, const char *fmt,...) __attribute__ ((format (printf, 4, 5))) FAST_FUNC;
1502 int ioctl_or_perror_and_die(int fd, unsigned request, void *argp, const char *fmt,...) __attribute__ ((format (printf, 4, 5))) FAST_FUNC;
1503 #if ENABLE_IOCTL_HEX2STR_ERROR
1504 int bb_ioctl_or_warn(int fd, unsigned request, void *argp, const char *ioctl_name) FAST_FUNC;
1505 int bb_xioctl(int fd, unsigned request, void *argp, const char *ioctl_name) FAST_FUNC;
1506 #define ioctl_or_warn(fd,request,argp) bb_ioctl_or_warn(fd,request,argp,#request)
1507 #define xioctl(fd,request,argp) bb_xioctl(fd,request,argp,#request)
1509 int bb_ioctl_or_warn(int fd, unsigned request, void *argp) FAST_FUNC;
1510 int bb_xioctl(int fd, unsigned request, void *argp) FAST_FUNC;
1511 #define ioctl_or_warn(fd,request,argp) bb_ioctl_or_warn(fd,request,argp)
1512 #define xioctl(fd,request,argp) bb_xioctl(fd,request,argp)
1515 char *is_in_ino_dev_hashtable(const struct stat *statbuf) FAST_FUNC;
1516 void add_to_ino_dev_hashtable(const struct stat *statbuf, const char *name) FAST_FUNC;
1517 void reset_ino_dev_hashtable(void) FAST_FUNC;
1519 /* At least glibc has horrendously large inline for this, so wrap it */
1520 unsigned long long bb_makedev(unsigned major, unsigned minor) FAST_FUNC;
1522 #define makedev(a,b) bb_makedev(a,b)
1526 /* "Keycodes" that report an escape sequence.
1527 * We use something which fits into signed char,
1528 * yet doesn't represent any valid Unicode character.
1529 * Also, -1 is reserved for error indication and we don't use it. */
1537 KEYCODE_INSERT = -8,
1538 KEYCODE_DELETE = -9,
1539 KEYCODE_PAGEUP = -10,
1540 KEYCODE_PAGEDOWN = -11,
1541 KEYCODE_BACKSPACE = -12, /* Used only if Alt/Ctrl/Shifted */
1542 KEYCODE_D = -13, /* Used only if Alted */
1557 /* ^^^^^ Be sure that last defined value is small enough.
1558 * Current read_key() code allows going up to -32 (0xfff..fffe0).
1559 * This gives three upper bits in LSB to play with:
1560 * KEYCODE_foo values are 0xfff..fffXX, lowest XX bits are: scavvvvv,
1561 * s=0 if SHIFT, c=0 if CTRL, a=0 if ALT,
1562 * vvvvv bits are the same for same key regardless of "shift bits".
1564 //KEYCODE_SHIFT_... = KEYCODE_... & ~0x80,
1565 KEYCODE_CTRL_RIGHT = KEYCODE_RIGHT & ~0x40,
1566 KEYCODE_CTRL_LEFT = KEYCODE_LEFT & ~0x40,
1567 KEYCODE_ALT_RIGHT = KEYCODE_RIGHT & ~0x20,
1568 KEYCODE_ALT_LEFT = KEYCODE_LEFT & ~0x20,
1569 KEYCODE_ALT_BACKSPACE = KEYCODE_BACKSPACE & ~0x20,
1570 KEYCODE_ALT_D = KEYCODE_D & ~0x20,
1572 KEYCODE_CURSOR_POS = -0x100, /* 0xfff..fff00 */
1573 /* How long is the longest ESC sequence we know?
1574 * We want it big enough to be able to contain
1575 * cursor position sequence "ESC [ 9999 ; 9999 R"
1577 KEYCODE_BUFFER_SIZE = 16
1579 /* Note: fd may be in blocking or non-blocking mode, both make sense.
1580 * For one, less uses non-blocking mode.
1581 * Only the first read syscall inside read_key may block indefinitely
1582 * (unless fd is in non-blocking mode),
1583 * subsequent reads will time out after a few milliseconds.
1584 * Return of -1 means EOF or error (errno == 0 on EOF).
1585 * buffer[0] is used as a counter of buffered chars and must be 0
1588 * -2: do not poll for input;
1589 * -1: poll(-1) (i.e. block);
1590 * >=0: poll for TIMEOUT milliseconds, return -1/EAGAIN on timeout
1592 int64_t read_key(int fd, char *buffer, int timeout) FAST_FUNC;
1593 void read_key_ungets(char *buffer, const char *str, unsigned len) FAST_FUNC;
1596 #if ENABLE_FEATURE_EDITING
1597 /* It's NOT just ENABLEd or disabled. It's a number: */
1598 # if defined CONFIG_FEATURE_EDITING_HISTORY && CONFIG_FEATURE_EDITING_HISTORY > 0
1599 # define MAX_HISTORY (CONFIG_FEATURE_EDITING_HISTORY + 0)
1600 unsigned size_from_HISTFILESIZE(const char *hp) FAST_FUNC;
1602 # define MAX_HISTORY 0
1604 typedef struct line_input_t {
1606 const char *path_lookup;
1610 int max_history; /* must never be <= 0 */
1611 # if ENABLE_FEATURE_EDITING_SAVEHISTORY
1612 /* meaning of this field depends on FEATURE_EDITING_SAVE_ON_EXIT:
1613 * if !FEATURE_EDITING_SAVE_ON_EXIT: "how many lines are
1614 * in on-disk history"
1615 * if FEATURE_EDITING_SAVE_ON_EXIT: "how many in-memory lines are
1616 * also in on-disk history (and thus need to be skipped on save)"
1618 unsigned cnt_history_in_file;
1619 const char *hist_file;
1621 char *history[MAX_HISTORY + 1];
1625 DO_HISTORY = 1 * (MAX_HISTORY > 0),
1626 TAB_COMPLETION = 2 * ENABLE_FEATURE_TAB_COMPLETION,
1627 USERNAME_COMPLETION = 4 * ENABLE_FEATURE_USERNAME_COMPLETION,
1628 VI_MODE = 8 * ENABLE_FEATURE_EDITING_VI,
1629 WITH_PATH_LOOKUP = 0x10,
1630 FOR_SHELL = DO_HISTORY | TAB_COMPLETION | USERNAME_COMPLETION,
1632 line_input_t *new_line_input_t(int flags) FAST_FUNC;
1633 /* So far static: void free_line_input_t(line_input_t *n) FAST_FUNC; */
1635 * maxsize must be >= 2.
1637 * -1 on read errors or EOF, or on bare Ctrl-D,
1638 * 0 on ctrl-C (the line entered is still returned in 'command'),
1639 * >0 length of input string, including terminating '\n'
1641 int read_line_input(line_input_t *st, const char *prompt, char *command, int maxsize, int timeout) FAST_FUNC;
1642 void show_history(const line_input_t *st) FAST_FUNC;
1643 # if ENABLE_FEATURE_EDITING_SAVE_ON_EXIT
1644 void save_history(line_input_t *st);
1647 #define MAX_HISTORY 0
1648 int read_line_input(const char* prompt, char* command, int maxsize) FAST_FUNC;
1649 #define read_line_input(state, prompt, command, maxsize, timeout) \
1650 read_line_input(prompt, command, maxsize)
1655 # ifdef TASK_COMM_LEN
1656 enum { COMM_LEN = TASK_COMM_LEN };
1658 /* synchronize with sizeof(task_struct.comm) in /usr/include/linux/sched.h */
1659 enum { COMM_LEN = 16 };
1664 unsigned long mapped_rw;
1665 unsigned long mapped_ro;
1666 unsigned long shared_clean;
1667 unsigned long shared_dirty;
1668 unsigned long private_clean;
1669 unsigned long private_dirty;
1670 unsigned long stack;
1671 unsigned long smap_pss, smap_swap;
1672 unsigned long smap_size;
1673 unsigned long smap_start;
1679 #define procps_read_smaps(pid, total, cb, data) \
1680 procps_read_smaps(pid, total)
1682 int FAST_FUNC procps_read_smaps(pid_t pid, struct smaprec *total,
1683 void (*cb)(struct smaprec *, void *), void *data);
1685 typedef struct procps_status_t {
1687 IF_FEATURE_SHOW_THREADS(DIR *task_dir;)
1688 uint8_t shift_pages_to_bytes;
1689 uint8_t shift_pages_to_kb;
1690 /* Fields are set to 0/NULL if failed to determine (or not requested) */
1694 IF_SELINUX(char *context;)
1695 IF_FEATURE_SHOW_THREADS(unsigned main_thread_pid;)
1696 /* Everything below must contain no ptrs to malloc'ed data:
1697 * it is memset(0) for each process in procps_scan() */
1698 unsigned long vsz, rss; /* we round it to kbytes */
1699 unsigned long stime, utime;
1700 unsigned long start_time;
1707 #if ENABLE_FEATURE_PS_ADDITIONAL_COLUMNS
1712 unsigned tty_major,tty_minor;
1713 #if ENABLE_FEATURE_TOPMEM
1714 struct smaprec smaps;
1717 /* basename of executable in exec(2), read from /proc/N/stat
1718 * (if executable is symlink or script, it is NOT replaced
1719 * by link target or interpreter name) */
1720 char comm[COMM_LEN];
1721 /* user/group? - use passwd/group parsing functions */
1722 #if ENABLE_FEATURE_TOP_SMP_PROCESS
1723 int last_seen_on_cpu;
1726 /* flag bits for procps_scan(xx, flags) calls */
1728 PSSCAN_PID = 1 << 0,
1729 PSSCAN_PPID = 1 << 1,
1730 PSSCAN_PGID = 1 << 2,
1731 PSSCAN_SID = 1 << 3,
1732 PSSCAN_UIDGID = 1 << 4,
1733 PSSCAN_COMM = 1 << 5,
1734 /* PSSCAN_CMD = 1 << 6, - use read_cmdline instead */
1735 PSSCAN_ARGV0 = 1 << 7,
1736 PSSCAN_EXE = 1 << 8,
1737 PSSCAN_STATE = 1 << 9,
1738 PSSCAN_VSZ = 1 << 10,
1739 PSSCAN_RSS = 1 << 11,
1740 PSSCAN_STIME = 1 << 12,
1741 PSSCAN_UTIME = 1 << 13,
1742 PSSCAN_TTY = 1 << 14,
1743 PSSCAN_SMAPS = (1 << 15) * ENABLE_FEATURE_TOPMEM,
1744 /* NB: used by find_pid_by_name(). Any applet using it
1745 * needs to be mentioned here. */
1746 PSSCAN_ARGVN = (1 << 16) * (ENABLE_KILLALL
1747 || ENABLE_PGREP || ENABLE_PKILL
1751 PSSCAN_CONTEXT = (1 << 17) * ENABLE_SELINUX,
1752 PSSCAN_START_TIME = 1 << 18,
1753 PSSCAN_CPU = (1 << 19) * ENABLE_FEATURE_TOP_SMP_PROCESS,
1754 PSSCAN_NICE = (1 << 20) * ENABLE_FEATURE_PS_ADDITIONAL_COLUMNS,
1755 PSSCAN_RUIDGID = (1 << 21) * ENABLE_FEATURE_PS_ADDITIONAL_COLUMNS,
1756 PSSCAN_TASKS = (1 << 22) * ENABLE_FEATURE_SHOW_THREADS,
1758 //procps_status_t* alloc_procps_scan(void) FAST_FUNC;
1759 void free_procps_scan(procps_status_t* sp) FAST_FUNC;
1760 procps_status_t* procps_scan(procps_status_t* sp, int flags) FAST_FUNC;
1761 /* Format cmdline (up to col chars) into char buf[size] */
1762 /* Puts [comm] if cmdline is empty (-> process is a kernel thread) */
1763 void read_cmdline(char *buf, int size, unsigned pid, const char *comm) FAST_FUNC;
1764 pid_t *find_pid_by_name(const char* procName) FAST_FUNC;
1765 pid_t *pidlist_reverse(pid_t *pidList) FAST_FUNC;
1766 int starts_with_cpu(const char *str) FAST_FUNC;
1767 unsigned get_cpu_count(void) FAST_FUNC;
1770 /* Use strict=1 if you process input from untrusted source:
1771 * it will return NULL on invalid %xx (bad hex chars)
1772 * and str + 1 if decoded char is / or NUL.
1773 * In non-strict mode, it always succeeds (returns str),
1774 * and also it additionally decoded '+' to space.
1776 char *percent_decode_in_place(char *str, int strict) FAST_FUNC;
1779 extern const char bb_uuenc_tbl_base64[] ALIGN1;
1780 extern const char bb_uuenc_tbl_std[] ALIGN1;
1781 void bb_uuencode(char *store, const void *s, int length, const char *tbl) FAST_FUNC;
1783 BASE64_FLAG_UU_STOP = 0x100,
1784 /* Sign-extends to a value which never matches fgetc result: */
1785 BASE64_FLAG_NO_STOP_CHAR = 0x80,
1787 const char *decode_base64(char **pp_dst, const char *src) FAST_FUNC;
1788 void read_base64(FILE *src_stream, FILE *dst_stream, int flags) FAST_FUNC;
1790 typedef struct md5_ctx_t {
1791 uint8_t wbuffer[64]; /* always correctly aligned for uint64_t */
1792 void (*process_block)(struct md5_ctx_t*) FAST_FUNC;
1793 uint64_t total64; /* must be directly before hash[] */
1794 uint32_t hash[8]; /* 4 elements for md5, 5 for sha1, 8 for sha256 */
1796 typedef struct md5_ctx_t sha1_ctx_t;
1797 typedef struct md5_ctx_t sha256_ctx_t;
1798 typedef struct sha512_ctx_t {
1799 uint64_t total64[2]; /* must be directly before hash[] */
1801 uint8_t wbuffer[128]; /* always correctly aligned for uint64_t */
1803 typedef struct sha3_ctx_t {
1805 unsigned bytes_queued;
1806 unsigned input_block_bytes;
1808 void md5_begin(md5_ctx_t *ctx) FAST_FUNC;
1809 void md5_hash(md5_ctx_t *ctx, const void *buffer, size_t len) FAST_FUNC;
1810 unsigned md5_end(md5_ctx_t *ctx, void *resbuf) FAST_FUNC;
1811 void sha1_begin(sha1_ctx_t *ctx) FAST_FUNC;
1812 #define sha1_hash md5_hash
1813 unsigned sha1_end(sha1_ctx_t *ctx, void *resbuf) FAST_FUNC;
1814 void sha256_begin(sha256_ctx_t *ctx) FAST_FUNC;
1815 #define sha256_hash md5_hash
1816 #define sha256_end sha1_end
1817 void sha512_begin(sha512_ctx_t *ctx) FAST_FUNC;
1818 void sha512_hash(sha512_ctx_t *ctx, const void *buffer, size_t len) FAST_FUNC;
1819 unsigned sha512_end(sha512_ctx_t *ctx, void *resbuf) FAST_FUNC;
1820 void sha3_begin(sha3_ctx_t *ctx) FAST_FUNC;
1821 void sha3_hash(sha3_ctx_t *ctx, const void *buffer, size_t len) FAST_FUNC;
1822 unsigned sha3_end(sha3_ctx_t *ctx, void *resbuf) FAST_FUNC;
1823 /* TLS benefits from knowing that sha1 and sha256 share these. Give them "agnostic" names too */
1824 typedef struct md5_ctx_t md5sha_ctx_t;
1825 #define md5sha_hash md5_hash
1826 #define sha_end sha1_end
1828 extern uint32_t *global_crc32_table;
1829 uint32_t *crc32_filltable(uint32_t *tbl256, int endian) FAST_FUNC;
1830 uint32_t crc32_block_endian1(uint32_t val, const void *buf, unsigned len, uint32_t *crc_table) FAST_FUNC;
1831 uint32_t crc32_block_endian0(uint32_t val, const void *buf, unsigned len, uint32_t *crc_table) FAST_FUNC;
1833 typedef struct masks_labels_t {
1837 int print_flags_separated(const int *masks, const char *labels,
1838 int flags, const char *separator) FAST_FUNC;
1839 int print_flags(const masks_labels_t *ml, int flags) FAST_FUNC;
1841 typedef struct bb_progress_t {
1843 unsigned last_update_sec;
1844 unsigned last_change_sec;
1846 const char *curfile;
1849 #define is_bb_progress_inited(p) ((p)->curfile != NULL)
1850 #define bb_progress_free(p) do { \
1851 if (ENABLE_UNICODE_SUPPORT) free((char*)((p)->curfile)); \
1852 (p)->curfile = NULL; \
1854 void bb_progress_init(bb_progress_t *p, const char *curfile) FAST_FUNC;
1855 void bb_progress_update(bb_progress_t *p,
1858 uoff_t totalsize) FAST_FUNC;
1860 unsigned ubi_devnum_from_devname(const char *str) FAST_FUNC;
1861 int ubi_get_volid_by_name(unsigned ubi_devnum, const char *vol_name) FAST_FUNC;
1864 extern const char *applet_name;
1866 /* Some older linkers don't perform string merging, we used to have common strings
1867 * as global arrays to do it by hand. But:
1868 * (1) newer linkers do it themselves,
1869 * (2) however, they DONT merge string constants with global arrays,
1870 * even if the value is the same (!). Thus global arrays actually
1871 * increased size a bit: for example, "/etc/passwd" string from libc
1872 * wasn't merged with bb_path_passwd_file[] array!
1873 * Therefore now we use #defines.
1875 /* "BusyBox vN.N.N (timestamp or extra_version)" */
1876 extern const char bb_banner[] ALIGN1;
1877 extern const char bb_msg_memory_exhausted[] ALIGN1;
1878 extern const char bb_msg_invalid_date[] ALIGN1;
1879 #define bb_msg_read_error "read error"
1880 #define bb_msg_write_error "write error"
1881 extern const char bb_msg_unknown[] ALIGN1;
1882 extern const char bb_msg_can_not_create_raw_socket[] ALIGN1;
1883 extern const char bb_msg_perm_denied_are_you_root[] ALIGN1;
1884 extern const char bb_msg_you_must_be_root[] ALIGN1;
1885 extern const char bb_msg_requires_arg[] ALIGN1;
1886 extern const char bb_msg_invalid_arg_to[] ALIGN1;
1887 extern const char bb_msg_standard_input[] ALIGN1;
1888 extern const char bb_msg_standard_output[] ALIGN1;
1890 /* NB: (bb_hexdigits_upcase[i] | 0x20) -> lowercase hex digit */
1891 extern const char bb_hexdigits_upcase[] ALIGN1;
1893 extern const char bb_path_wtmp_file[] ALIGN1;
1895 /* Busybox mount uses either /proc/mounts or /etc/mtab to
1896 * get the list of currently mounted filesystems */
1897 #define bb_path_mtab_file IF_FEATURE_MTAB_SUPPORT("/etc/mtab")IF_NOT_FEATURE_MTAB_SUPPORT("/proc/mounts")
1899 #define bb_path_passwd_file _PATH_PASSWD
1900 #define bb_path_group_file _PATH_GROUP
1901 #define bb_path_shadow_file _PATH_SHADOW
1902 #define bb_path_gshadow_file _PATH_GSHADOW
1904 #define bb_path_motd_file "/etc/motd"
1906 #define bb_dev_null "/dev/null"
1907 extern const char bb_busybox_exec_path[] ALIGN1;
1908 /* util-linux manpage says /sbin:/bin:/usr/sbin:/usr/bin,
1909 * but I want to save a few bytes here */
1910 extern const char bb_PATH_root_path[] ALIGN1; /* "PATH=/sbin:/usr/sbin:/bin:/usr/bin" */
1911 #define bb_default_root_path (bb_PATH_root_path + sizeof("PATH"))
1912 #define bb_default_path (bb_PATH_root_path + sizeof("PATH=/sbin:/usr/sbin"))
1914 extern const int const_int_0;
1915 //extern const int const_int_1;
1917 /* This struct is deliberately not defined. */
1918 /* See docs/keep_data_small.txt */
1920 /* '*const' ptr makes gcc optimize code much better.
1921 * Magic prevents ptr_to_globals from going into rodata.
1922 * If you want to assign a value, use SET_PTR_TO_GLOBALS(x) */
1923 extern struct globals *const ptr_to_globals;
1924 /* At least gcc 3.4.6 on mipsel system needs optimization barrier */
1925 #define barrier() __asm__ __volatile__("":::"memory")
1926 #define SET_PTR_TO_GLOBALS(x) do { \
1927 (*(struct globals**)&ptr_to_globals) = (void*)(x); \
1930 #define FREE_PTR_TO_GLOBALS() do { \
1931 if (ENABLE_FEATURE_CLEAN_UP) { \
1932 free(ptr_to_globals); \
1936 /* You can change LIBBB_DEFAULT_LOGIN_SHELL, but don't use it,
1937 * use bb_default_login_shell and following defines.
1938 * If you change LIBBB_DEFAULT_LOGIN_SHELL,
1939 * don't forget to change increment constant. */
1940 #define LIBBB_DEFAULT_LOGIN_SHELL "-/bin/sh"
1941 extern const char bb_default_login_shell[] ALIGN1;
1943 #define DEFAULT_SHELL (bb_default_login_shell+1)
1945 #define DEFAULT_SHELL_SHORT_NAME (bb_default_login_shell+6)
1947 /* The following devices are the same on all systems. */
1948 #define CURRENT_TTY "/dev/tty"
1949 #define DEV_CONSOLE "/dev/console"
1951 #if defined(__FreeBSD_kernel__)
1952 # define CURRENT_VC CURRENT_TTY
1953 # define VC_1 "/dev/ttyv0"
1954 # define VC_2 "/dev/ttyv1"
1955 # define VC_3 "/dev/ttyv2"
1956 # define VC_4 "/dev/ttyv3"
1957 # define VC_5 "/dev/ttyv4"
1958 # define VC_FORMAT "/dev/ttyv%d"
1959 #elif defined(__GNU__)
1960 # define CURRENT_VC CURRENT_TTY
1961 # define VC_1 "/dev/tty1"
1962 # define VC_2 "/dev/tty2"
1963 # define VC_3 "/dev/tty3"
1964 # define VC_4 "/dev/tty4"
1965 # define VC_5 "/dev/tty5"
1966 # define VC_FORMAT "/dev/tty%d"
1967 #elif ENABLE_FEATURE_DEVFS
1968 /*Linux, obsolete devfs names */
1969 # define CURRENT_VC "/dev/vc/0"
1970 # define VC_1 "/dev/vc/1"
1971 # define VC_2 "/dev/vc/2"
1972 # define VC_3 "/dev/vc/3"
1973 # define VC_4 "/dev/vc/4"
1974 # define VC_5 "/dev/vc/5"
1975 # define VC_FORMAT "/dev/vc/%d"
1976 # define LOOP_FORMAT "/dev/loop/%u"
1977 # define LOOP_NAMESIZE (sizeof("/dev/loop/") + sizeof(int)*3 + 1)
1978 # define LOOP_NAME "/dev/loop/"
1979 # define FB_0 "/dev/fb/0"
1981 /*Linux, normal names */
1982 # define CURRENT_VC "/dev/tty0"
1983 # define VC_1 "/dev/tty1"
1984 # define VC_2 "/dev/tty2"
1985 # define VC_3 "/dev/tty3"
1986 # define VC_4 "/dev/tty4"
1987 # define VC_5 "/dev/tty5"
1988 # define VC_FORMAT "/dev/tty%d"
1989 # define LOOP_FORMAT "/dev/loop%u"
1990 # define LOOP_NAMESIZE (sizeof("/dev/loop") + sizeof(int)*3 + 1)
1991 # define LOOP_NAME "/dev/loop"
1992 # define FB_0 "/dev/fb0"
1996 #define ARRAY_SIZE(x) ((unsigned)(sizeof(x) / sizeof((x)[0])))
1997 #define BUILD_BUG_ON(condition) ((void)sizeof(char[1 - 2*!!(condition)]))
2000 /* We redefine ctype macros. Unicode-correct handling of char types
2001 * can't be done with such byte-oriented operations anyway,
2002 * we don't lose anything.
2020 /* We save ~500 bytes on isdigit alone.
2021 * BTW, x86 likes (unsigned char) cast more than (unsigned). */
2023 /* These work the same for ASCII and Unicode,
2024 * assuming no one asks "is this a *Unicode* letter?" using isalpha(letter) */
2025 #define isascii(a) ((unsigned char)(a) <= 0x7f)
2026 #define isdigit(a) ((unsigned char)((a) - '0') <= 9)
2027 #define isupper(a) ((unsigned char)((a) - 'A') <= ('Z' - 'A'))
2028 #define islower(a) ((unsigned char)((a) - 'a') <= ('z' - 'a'))
2029 #define isalpha(a) ((unsigned char)(((a)|0x20) - 'a') <= ('z' - 'a'))
2030 #define isblank(a) ({ unsigned char bb__isblank = (a); bb__isblank == ' ' || bb__isblank == '\t'; })
2031 #define iscntrl(a) ({ unsigned char bb__iscntrl = (a); bb__iscntrl < ' ' || bb__iscntrl == 0x7f; })
2032 /* In POSIX/C locale isspace is only these chars: "\t\n\v\f\r" and space.
2033 * "\t\n\v\f\r" happen to have ASCII codes 9,10,11,12,13.
2035 #define isspace(a) ({ unsigned char bb__isspace = (a) - 9; bb__isspace == (' ' - 9) || bb__isspace <= (13 - 9); })
2036 // Unsafe wrt NUL: #define ispunct(a) (strchr("!\"#$%&'()*+,-./:;<=>?@[\\]^_`{|}~", (a)) != NULL)
2037 #define ispunct(a) (strchrnul("!\"#$%&'()*+,-./:;<=>?@[\\]^_`{|}~", (a))[0])
2038 // Bigger code: #define isalnum(a) ({ unsigned char bb__isalnum = (a) - '0'; bb__isalnum <= 9 || ((bb__isalnum - ('A' - '0')) & 0xdf) <= 25; })
2039 #define isalnum(a) bb_ascii_isalnum(a)
2040 static ALWAYS_INLINE int bb_ascii_isalnum(unsigned char a)
2042 unsigned char b = a - '0';
2046 return b <= 'z' - 'a';
2048 #define isxdigit(a) bb_ascii_isxdigit(a)
2049 static ALWAYS_INLINE int bb_ascii_isxdigit(unsigned char a)
2051 unsigned char b = a - '0';
2055 return b <= 'f' - 'a';
2057 #define toupper(a) bb_ascii_toupper(a)
2058 static ALWAYS_INLINE unsigned char bb_ascii_toupper(unsigned char a)
2060 unsigned char b = a - 'a';
2061 if (b <= ('z' - 'a'))
2065 #define tolower(a) bb_ascii_tolower(a)
2066 static ALWAYS_INLINE unsigned char bb_ascii_tolower(unsigned char a)
2068 unsigned char b = a - 'A';
2069 if (b <= ('Z' - 'A'))
2074 /* In ASCII and Unicode, these are likely to be very different.
2075 * Let's prevent ambiguous usage from the start */
2076 #define isgraph(a) isgraph_is_ambiguous_dont_use(a)
2077 #define isprint(a) isprint_is_ambiguous_dont_use(a)
2078 /* NB: must not treat EOF as isgraph or isprint */
2079 #define isgraph_asciionly(a) ((unsigned)((a) - 0x21) <= 0x7e - 0x21)
2080 #define isprint_asciionly(a) ((unsigned)((a) - 0x20) <= 0x7e - 0x20)
2083 /* Simple unit-testing framework */
2085 typedef void (*bbunit_testfunc)(void);
2087 struct bbunit_listelem {
2089 bbunit_testfunc testfunc;
2092 void bbunit_registertest(struct bbunit_listelem* test);
2093 void bbunit_settestfailed(void);
2095 #define BBUNIT_DEFINE_TEST(NAME) \
2096 static void bbunit_##NAME##_test(void); \
2097 static struct bbunit_listelem bbunit_##NAME##_elem = { \
2099 .testfunc = bbunit_##NAME##_test, \
2101 static void INIT_FUNC bbunit_##NAME##_register(void) \
2103 bbunit_registertest(&bbunit_##NAME##_elem); \
2105 static void bbunit_##NAME##_test(void)
2108 * Both 'goto bbunit_end' and 'break' are here only to get rid
2109 * of compiler warnings.
2111 #define BBUNIT_ENDTEST \
2118 #define BBUNIT_PRINTASSERTFAIL \
2121 "[ERROR] Assertion failed in file %s, line %d", \
2122 __FILE__, __LINE__); \
2125 #define BBUNIT_ASSERTION_FAILED \
2127 bbunit_settestfailed(); \
2133 * For now we only offer assertions which cause tests to fail
2134 * immediately. In the future 'expects' might be added too -
2135 * similar to those offered by the gtest framework.
2137 #define BBUNIT_ASSERT_EQ(EXPECTED, ACTUAL) \
2139 if ((EXPECTED) != (ACTUAL)) { \
2140 BBUNIT_PRINTASSERTFAIL; \
2141 bb_error_msg("[ERROR] '%s' isn't equal to '%s'", \
2142 #EXPECTED, #ACTUAL); \
2143 BBUNIT_ASSERTION_FAILED; \
2147 #define BBUNIT_ASSERT_NOTEQ(EXPECTED, ACTUAL) \
2149 if ((EXPECTED) == (ACTUAL)) { \
2150 BBUNIT_PRINTASSERTFAIL; \
2151 bb_error_msg("[ERROR] '%s' is equal to '%s'", \
2152 #EXPECTED, #ACTUAL); \
2153 BBUNIT_ASSERTION_FAILED; \
2157 #define BBUNIT_ASSERT_NOTNULL(PTR) \
2159 if ((PTR) == NULL) { \
2160 BBUNIT_PRINTASSERTFAIL; \
2161 bb_error_msg("[ERROR] '%s' is NULL!", #PTR); \
2162 BBUNIT_ASSERTION_FAILED; \
2166 #define BBUNIT_ASSERT_NULL(PTR) \
2168 if ((PTR) != NULL) { \
2169 BBUNIT_PRINTASSERTFAIL; \
2170 bb_error_msg("[ERROR] '%s' is not NULL!", #PTR); \
2171 BBUNIT_ASSERTION_FAILED; \
2175 #define BBUNIT_ASSERT_FALSE(STATEMENT) \
2177 if ((STATEMENT)) { \
2178 BBUNIT_PRINTASSERTFAIL; \
2179 bb_error_msg("[ERROR] Statement '%s' evaluated to true!", \
2181 BBUNIT_ASSERTION_FAILED; \
2185 #define BBUNIT_ASSERT_TRUE(STATEMENT) \
2187 if (!(STATEMENT)) { \
2188 BBUNIT_PRINTASSERTFAIL; \
2189 bb_error_msg("[ERROR] Statement '%s' evaluated to false!", \
2191 BBUNIT_ASSERTION_FAILED; \
2195 #define BBUNIT_ASSERT_STREQ(STR1, STR2) \
2197 if (strcmp(STR1, STR2) != 0) { \
2198 BBUNIT_PRINTASSERTFAIL; \
2199 bb_error_msg("[ERROR] Strings '%s' and '%s' " \
2200 "are not the same", STR1, STR2); \
2201 BBUNIT_ASSERTION_FAILED; \
2205 #define BBUNIT_ASSERT_STRNOTEQ(STR1, STR2) \
2207 if (strcmp(STR1, STR2) == 0) { \
2208 BBUNIT_PRINTASSERTFAIL; \
2209 bb_error_msg("[ERROR] Strings '%s' and '%s' " \
2210 "are the same, but were " \
2211 "expected to differ", STR1, STR2); \
2212 BBUNIT_ASSERTION_FAILED; \
2217 POP_SAVED_FUNCTION_VISIBILITY