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)
72 #if !ENABLE_USE_BB_PWD_GRP
76 #if ENABLE_FEATURE_SHADOWPASSWDS
77 # if !ENABLE_USE_BB_SHADOW
82 /* Some libc's forget to declare these, help them */
83 extern char **environ;
85 #if defined(__GLIBC__) && __GLIBC__ < 2
86 int vdprintf(int d, const char *format, va_list ap);
88 /* klogctl is in libc's klog.h, but we cheat and not #include that */
89 int klogctl(int type, char *b, int len);
90 /* This is declared here rather than #including <libgen.h> in order to avoid
91 * confusing the two versions of basename. See the dirname/basename man page
93 char *dirname(char *path);
94 /* Include our own copy of struct sysinfo to avoid binary compatibility
95 * problems with Linux 2.4, which changed things. Grumble, grumble. */
97 long uptime; /* Seconds since boot */
98 unsigned long loads[3]; /* 1, 5, and 15 minute load averages */
99 unsigned long totalram; /* Total usable main memory size */
100 unsigned long freeram; /* Available memory size */
101 unsigned long sharedram; /* Amount of shared memory */
102 unsigned long bufferram; /* Memory used by buffers */
103 unsigned long totalswap; /* Total swap space size */
104 unsigned long freeswap; /* swap space still available */
105 unsigned short procs; /* Number of current processes */
106 unsigned short pad; /* Padding needed for m68k */
107 unsigned long totalhigh; /* Total high memory size */
108 unsigned long freehigh; /* Available high memory size */
109 unsigned int mem_unit; /* Memory unit size in bytes */
110 char _f[20 - 2*sizeof(long) - sizeof(int)]; /* Padding: libc5 uses this.. */
112 int sysinfo(struct sysinfo* info);
115 /* Make all declarations hidden (-fvisibility flag only affects definitions) */
116 /* (don't include system headers after this until corresponding pop!) */
117 #if __GNUC_PREREQ(4,1)
118 # pragma GCC visibility push(hidden)
122 #if ENABLE_USE_BB_PWD_GRP
126 #if ENABLE_FEATURE_SHADOWPASSWDS
127 # if ENABLE_USE_BB_SHADOW
128 # include "shadow_.h"
132 /* Tested to work correctly with all int types (IIRC :]) */
133 #define MAXINT(T) (T)( \
136 : (T)~((T)1 << (sizeof(T)*8-1)) \
139 #define MININT(T) (T)( \
142 : ((T)1 << (sizeof(T)*8-1)) \
145 /* Large file support */
146 /* Note that CONFIG_LFS=y forces bbox to be built with all common ops
147 * (stat, lseek etc) mapped to "largefile" variants by libc.
148 * Practically it means that open() automatically has O_LARGEFILE added
149 * and all filesize/file_offset parameters and struct members are "large"
150 * (in today's world - signed 64bit). For full support of large files,
151 * we need a few helper #defines (below) and careful use of off_t
152 * instead of int/ssize_t. No lseek64(), O_LARGEFILE etc necessary */
154 /* CONFIG_LFS is on */
155 # if ULONG_MAX > 0xffffffff
156 /* "long" is long enough on this system */
157 # define XATOOFF(a) xatoul_range(a, 0, LONG_MAX)
158 /* usage: sz = BB_STRTOOFF(s, NULL, 10); if (errno || sz < 0) die(); */
159 # define BB_STRTOOFF bb_strtoul
160 # define STRTOOFF strtoul
161 /* usage: printf("size: %"OFF_FMT"d (%"OFF_FMT"x)\n", sz, sz); */
164 /* "long" is too short, need "long long" */
165 # define XATOOFF(a) xatoull_range(a, 0, LLONG_MAX)
166 # define BB_STRTOOFF bb_strtoull
167 # define STRTOOFF strtoull
168 # define OFF_FMT "ll"
171 /* CONFIG_LFS is off */
172 # if UINT_MAX == 0xffffffff
173 /* While sizeof(off_t) == sizeof(int), off_t is typedef'ed to long anyway.
174 * gcc will throw warnings on printf("%d", off_t). Crap... */
175 # define XATOOFF(a) xatoi_u(a)
176 # define BB_STRTOOFF bb_strtou
177 # define STRTOOFF strtol
180 # define XATOOFF(a) xatoul_range(a, 0, LONG_MAX)
181 # define BB_STRTOOFF bb_strtoul
182 # define STRTOOFF strtol
186 /* scary. better ideas? (but do *test* them first!) */
187 #define OFF_T_MAX ((off_t)~((off_t)1 << (sizeof(off_t)*8-1)))
189 /* Some useful definitions */
191 #define FALSE ((int) 0)
193 #define TRUE ((int) 1)
195 #define SKIP ((int) 2)
198 #define MTAB_GETMOUNTPT '1'
199 #define MTAB_GETDEVICE '2'
201 #define BUF_SIZE 8192
202 #define EXPAND_ALLOC 1024
204 /* Macros for min/max. */
206 #define MIN(a,b) (((a)<(b))?(a):(b))
210 #define MAX(a,b) (((a)>(b))?(a):(b))
213 /* buffer allocation schemes */
214 #if ENABLE_FEATURE_BUFFERS_GO_ON_STACK
215 #define RESERVE_CONFIG_BUFFER(buffer,len) char buffer[len]
216 #define RESERVE_CONFIG_UBUFFER(buffer,len) unsigned char buffer[len]
217 #define RELEASE_CONFIG_BUFFER(buffer) ((void)0)
219 #if ENABLE_FEATURE_BUFFERS_GO_IN_BSS
220 #define RESERVE_CONFIG_BUFFER(buffer,len) static char buffer[len]
221 #define RESERVE_CONFIG_UBUFFER(buffer,len) static unsigned char buffer[len]
222 #define RELEASE_CONFIG_BUFFER(buffer) ((void)0)
224 #define RESERVE_CONFIG_BUFFER(buffer,len) char *buffer = xmalloc(len)
225 #define RESERVE_CONFIG_UBUFFER(buffer,len) unsigned char *buffer = xmalloc(len)
226 #define RELEASE_CONFIG_BUFFER(buffer) free(buffer)
230 #if defined(__GLIBC__)
231 /* glibc uses __errno_location() to get a ptr to errno */
232 /* We can just memorize it once - no multithreading in busybox :) */
233 extern int *const bb_errno;
235 #define errno (*bb_errno)
238 unsigned long long monotonic_us(void);
239 unsigned monotonic_sec(void);
241 extern void chomp(char *s);
242 extern void trim(char *s);
243 extern char *skip_whitespace(const char *);
244 extern char *skip_non_whitespace(const char *);
246 //TODO: supply a pointer to char[11] buffer (avoid statics)?
247 extern const char *bb_mode_string(mode_t mode);
248 extern int is_directory(const char *name, int followLinks, struct stat *statBuf);
249 enum { /* DO NOT CHANGE THESE VALUES! cp.c, mv.c, install.c depend on them. */
250 FILEUTILS_PRESERVE_STATUS = 1,
251 FILEUTILS_DEREFERENCE = 2,
254 FILEUTILS_INTERACTIVE = 0x10,
255 FILEUTILS_MAKE_HARDLINK = 0x20,
256 FILEUTILS_MAKE_SOFTLINK = 0x40,
257 FILEUTILS_DEREF_SOFTLINK = 0x80,
259 FILEUTILS_PRESERVE_SECURITY_CONTEXT = 0x100,
260 FILEUTILS_SET_SECURITY_CONTEXT = 0x200
263 #define FILEUTILS_CP_OPTSTR "pdRfilsL" USE_SELINUX("c")
264 extern int remove_file(const char *path, int flags);
265 /* NB: without FILEUTILS_RECUR in flags, it will basically "cat"
266 * the source, not copy (unless "source" is a directory).
267 * This makes "cp /dev/null file" and "install /dev/null file" (!!!)
268 * work coreutils-compatibly. */
269 extern int copy_file(const char *source, const char *dest, int flags);
272 ACTION_RECURSE = (1 << 0),
273 ACTION_FOLLOWLINKS = (1 << 1),
274 ACTION_FOLLOWLINKS_L0 = (1 << 2),
275 ACTION_DEPTHFIRST = (1 << 3),
276 /*ACTION_REVERSE = (1 << 4), - unused */
278 extern int recursive_action(const char *fileName, unsigned flags,
279 int (*fileAction) (const char *fileName, struct stat* statbuf, void* userData, int depth),
280 int (*dirAction) (const char *fileName, struct stat* statbuf, void* userData, int depth),
281 void* userData, unsigned depth);
282 extern int device_open(const char *device, int mode);
283 enum { GETPTY_BUFSIZE = 16 }; /* more than enough for "/dev/ttyXXX" */
284 extern int getpty(char *line);
285 extern int get_console_fd(void);
286 extern char *find_block_device(const char *path);
287 /* bb_copyfd_XX print read/write errors and return -1 if they occur */
288 extern off_t bb_copyfd_eof(int fd1, int fd2);
289 extern off_t bb_copyfd_size(int fd1, int fd2, off_t size);
290 extern void bb_copyfd_exact_size(int fd1, int fd2, off_t size);
291 /* "short" copy can be detected by return value < size */
292 /* this helper yells "short read!" if param is not -1 */
293 extern void complain_copyfd_and_die(off_t sz) ATTRIBUTE_NORETURN;
294 extern char bb_process_escape_sequence(const char **ptr);
295 /* xxxx_strip version can modify its parameter:
299 * "abc/def/" -> "def" !!
301 extern char *bb_get_last_path_component_strip(char *path);
302 /* "abc/def/" -> "" and it never modifies 'path' */
303 extern char *bb_get_last_path_component_nostrip(const char *path);
305 int ndelay_on(int fd);
306 int ndelay_off(int fd);
307 int close_on_exec_on(int fd);
308 void xdup2(int, int);
309 void xmove_fd(int, int);
312 DIR *xopendir(const char *path);
313 DIR *warn_opendir(const char *path);
315 /* UNUSED: char *xmalloc_realpath(const char *path); */
316 char *xmalloc_readlink(const char *path);
317 char *xmalloc_readlink_or_warn(const char *path);
318 char *xrealloc_getcwd_or_warn(char *cwd);
320 char *xmalloc_follow_symlinks(const char *path);
324 /* bb_signals(BB_FATAL_SIGS, handler) catches all signals which
325 * otherwise would kill us, except for those resulting from bugs:
326 * SIGSEGV, SIGILL, SIGFPE.
327 * Other fatal signals not included (TODO?):
328 * SIGBUS Bus error (bad memory access)
329 * SIGPOLL Pollable event. Synonym of SIGIO
330 * SIGPROF Profiling timer expired
331 * SIGSYS Bad argument to routine
332 * SIGTRAP Trace/breakpoint trap
334 * The only known arch with some of these sigs not fitting
335 * into 32 bits is parisc (SIGXCPU=33, SIGXFSZ=34, SIGSTKFLT=36).
336 * Dance around with long long to guard against that...
338 BB_FATAL_SIGS = (int)(0
342 + (1LL << SIGPIPE) // Write to pipe with no readers
343 + (1LL << SIGQUIT) // Quit from keyboard
344 + (1LL << SIGABRT) // Abort signal from abort(3)
345 + (1LL << SIGALRM) // Timer signal from alarm(2)
346 + (1LL << SIGVTALRM) // Virtual alarm clock
347 + (1LL << SIGXCPU) // CPU time limit exceeded
348 + (1LL << SIGXFSZ) // File size limit exceeded
349 + (1LL << SIGUSR1) // Yes kids, these are also fatal!
353 void bb_signals(int sigs, void (*f)(int));
354 /* Unlike signal() and bb_signals, sets handler with sigaction()
355 * and in a way that while signal handler is run, no other signals
356 * will be blocked: */
357 void bb_signals_recursive(int sigs, void (*f)(int));
358 /* syscalls like read() will be interrupted with EINTR: */
359 void signal_no_SA_RESTART_empty_mask(int sig, void (*handler)(int));
360 /* syscalls like read() won't be interrupted (though select/poll will be): */
361 void signal_SA_RESTART_empty_mask(int sig, void (*handler)(int));
362 void wait_for_any_sig(void);
363 void kill_myself_with_sig(int sig) ATTRIBUTE_NORETURN;
364 void sig_block(int sig);
365 void sig_unblock(int sig);
366 /* Will do sigaction(signum, act, NULL): */
367 int sigaction_set(int sig, const struct sigaction *act);
368 /* SIG_BLOCK/SIG_UNBLOCK all signals: */
369 int sigprocmask_allsigs(int how);
372 void xsetgid(gid_t gid);
373 void xsetuid(uid_t uid);
374 void xchdir(const char *path);
375 void xchroot(const char *path);
376 void xsetenv(const char *key, const char *value);
377 void xunlink(const char *pathname);
378 void xstat(const char *pathname, struct stat *buf);
379 int xopen(const char *pathname, int flags);
380 int xopen3(const char *pathname, int flags, int mode);
381 int open_or_warn(const char *pathname, int flags);
382 int open3_or_warn(const char *pathname, int flags, int mode);
383 int open_or_warn_stdin(const char *pathname);
384 void xrename(const char *oldpath, const char *newpath);
385 int rename_or_warn(const char *oldpath, const char *newpath);
386 off_t xlseek(int fd, off_t offset, int whence);
387 off_t fdlength(int fd);
389 void xpipe(int filedes[2]);
390 /* In this form code with pipes is much more readable */
391 struct fd_pair { int rd; int wr; };
392 #define piped_pair(pair) pipe(&((pair).rd))
393 #define xpiped_pair(pair) xpipe(&((pair).rd))
395 /* Useful for having small structure members/global variables */
396 typedef int8_t socktype_t;
397 typedef int8_t family_t;
398 struct BUG_too_small {
399 char BUG_socktype_t_too_small[(0
406 char BUG_family_t_too_small[(0
423 int xsocket(int domain, int type, int protocol);
424 void xbind(int sockfd, struct sockaddr *my_addr, socklen_t addrlen);
425 void xlisten(int s, int backlog);
426 void xconnect(int s, const struct sockaddr *s_addr, socklen_t addrlen);
427 ssize_t xsendto(int s, const void *buf, size_t len, const struct sockaddr *to,
429 /* SO_REUSEADDR allows a server to rebind to an address that is already
430 * "in use" by old connections to e.g. previous server instance which is
431 * killed or crashed. Without it bind will fail until all such connections
432 * time out. Linux does not allow multiple live binds on same ip:port
433 * regardless of SO_REUSEADDR (unlike some other flavors of Unix).
434 * Turn it on before you call bind(). */
435 void setsockopt_reuseaddr(int fd); /* On Linux this never fails. */
436 int setsockopt_broadcast(int fd);
437 /* NB: returns port in host byte order */
438 unsigned bb_lookup_port(const char *port, const char *protocol, unsigned default_port);
439 typedef struct len_and_sockaddr {
443 struct sockaddr_in sin;
444 #if ENABLE_FEATURE_IPV6
445 struct sockaddr_in6 sin6;
450 LSA_LEN_SIZE = offsetof(len_and_sockaddr, u),
451 LSA_SIZEOF_SA = sizeof(
454 struct sockaddr_in sin;
455 #if ENABLE_FEATURE_IPV6
456 struct sockaddr_in6 sin6;
461 /* Create stream socket, and allocate suitable lsa.
462 * (lsa of correct size and lsa->sa.sa_family (AF_INET/AF_INET6))
463 * af == AF_UNSPEC will result in trying to create IPv6 socket,
464 * and if kernel doesn't support it, IPv4.
466 #if ENABLE_FEATURE_IPV6
467 int xsocket_type(len_and_sockaddr **lsap, int af, int sock_type);
469 int xsocket_type(len_and_sockaddr **lsap, int sock_type);
470 #define xsocket_type(lsap, af, sock_type) xsocket_type((lsap), (sock_type))
472 int xsocket_stream(len_and_sockaddr **lsap);
473 /* Create server socket bound to bindaddr:port. bindaddr can be NULL,
474 * numeric IP ("N.N.N.N") or numeric IPv6 address,
475 * and can have ":PORT" suffix (for IPv6 use "[X:X:...:X]:PORT").
476 * Only if there is no suffix, port argument is used */
477 /* NB: these set SO_REUSEADDR before bind */
478 int create_and_bind_stream_or_die(const char *bindaddr, int port);
479 int create_and_bind_dgram_or_die(const char *bindaddr, int port);
480 /* Create client TCP socket connected to peer:port. Peer cannot be NULL.
481 * Peer can be numeric IP ("N.N.N.N"), numeric IPv6 address or hostname,
482 * and can have ":PORT" suffix (for IPv6 use "[X:X:...:X]:PORT").
483 * If there is no suffix, port argument is used */
484 int create_and_connect_stream_or_die(const char *peer, int port);
485 /* Connect to peer identified by lsa */
486 int xconnect_stream(const len_and_sockaddr *lsa);
487 /* Return malloc'ed len_and_sockaddr with socket address of host:port
488 * Currently will return IPv4 or IPv6 sockaddrs only
489 * (depending on host), but in theory nothing prevents e.g.
490 * UNIX socket address being returned, IPX sockaddr etc...
491 * On error does bb_error_msg and returns NULL */
492 len_and_sockaddr* host2sockaddr(const char *host, int port);
493 /* Version which dies on error */
494 len_and_sockaddr* xhost2sockaddr(const char *host, int port);
495 len_and_sockaddr* xdotted2sockaddr(const char *host, int port);
496 /* Same, useful if you want to force family (e.g. IPv6) */
497 #if !ENABLE_FEATURE_IPV6
498 #define host_and_af2sockaddr(host, port, af) host2sockaddr((host), (port))
499 #define xhost_and_af2sockaddr(host, port, af) xhost2sockaddr((host), (port))
501 len_and_sockaddr* host_and_af2sockaddr(const char *host, int port, sa_family_t af);
502 len_and_sockaddr* xhost_and_af2sockaddr(const char *host, int port, sa_family_t af);
504 /* Assign sin[6]_port member if the socket is an AF_INET[6] one,
505 * otherwise no-op. Useful for ftp.
506 * NB: does NOT do htons() internally, just direct assignment. */
507 void set_nport(len_and_sockaddr *lsa, unsigned port);
508 /* Retrieve sin[6]_port or return -1 for non-INET[6] lsa's */
509 int get_nport(const struct sockaddr *sa);
510 /* Reverse DNS. Returns NULL on failure. */
511 char* xmalloc_sockaddr2host(const struct sockaddr *sa);
512 /* This one doesn't append :PORTNUM */
513 char* xmalloc_sockaddr2host_noport(const struct sockaddr *sa);
514 /* This one also doesn't fall back to dotted IP (returns NULL) */
515 char* xmalloc_sockaddr2hostonly_noport(const struct sockaddr *sa);
516 /* inet_[ap]ton on steroids */
517 char* xmalloc_sockaddr2dotted(const struct sockaddr *sa);
518 char* xmalloc_sockaddr2dotted_noport(const struct sockaddr *sa);
519 // "old" (ipv4 only) API
520 // users: traceroute.c hostname.c - use _list_ of all IPs
521 struct hostent *xgethostbyname(const char *name);
522 // Also mount.c and inetd.c are using gethostbyname(),
523 // + inet_common.c has additional IPv4-only stuff
526 void socket_want_pktinfo(int fd);
527 ssize_t send_to_from(int fd, void *buf, size_t len, int flags,
528 const struct sockaddr *to,
529 const struct sockaddr *from,
531 ssize_t recv_from_to(int fd, void *buf, size_t len, int flags,
532 struct sockaddr *from,
536 char *xstrdup(const char *s);
537 char *xstrndup(const char *s, int n);
538 char *safe_strncpy(char *dst, const char *src, size_t size);
539 /* Guaranteed to NOT be a macro (smallest code). Saves nearly 2k on uclibc.
540 * But potentially slow, don't use in one-billion-times loops */
541 int bb_putchar(int ch);
542 char *xasprintf(const char *format, ...) __attribute__ ((format (printf, 1, 2)));
543 /* Prints unprintable chars ch as ^C or M-c to file
544 * (M-c is used only if ch is ORed with PRINTABLE_META),
545 * else it is printed as-is (except for ch = 0x9b) */
546 enum { PRINTABLE_META = 0x100 };
547 void fputc_printable(int ch, FILE *file);
548 // gcc-4.1.1 still isn't good enough at optimizing it
549 // (+200 bytes compared to macro)
550 //static ALWAYS_INLINE
551 //int LONE_DASH(const char *s) { return s[0] == '-' && !s[1]; }
552 //static ALWAYS_INLINE
553 //int NOT_LONE_DASH(const char *s) { return s[0] != '-' || s[1]; }
554 #define LONE_DASH(s) ((s)[0] == '-' && !(s)[1])
555 #define NOT_LONE_DASH(s) ((s)[0] != '-' || (s)[1])
556 #define LONE_CHAR(s,c) ((s)[0] == (c) && !(s)[1])
557 #define NOT_LONE_CHAR(s,c) ((s)[0] != (c) || (s)[1])
558 #define DOT_OR_DOTDOT(s) ((s)[0] == '.' && (!(s)[1] || ((s)[1] == '.' && !(s)[2])))
560 /* dmalloc will redefine these to it's own implementation. It is safe
561 * to have the prototypes here unconditionally. */
562 extern void *malloc_or_warn(size_t size);
563 extern void *xmalloc(size_t size);
564 extern void *xzalloc(size_t size);
565 extern void *xrealloc(void *old, size_t size);
567 extern ssize_t safe_read(int fd, void *buf, size_t count);
568 extern ssize_t nonblock_safe_read(int fd, void *buf, size_t count);
569 // NB: will return short read on error, not -1,
570 // if some data was read before error occurred
571 extern ssize_t full_read(int fd, void *buf, size_t count);
572 extern void xread(int fd, void *buf, size_t count);
573 extern unsigned char xread_char(int fd);
574 // Reads one line a-la fgets (but doesn't save terminating '\n').
575 // Uses single full_read() call, works only on seekable streams.
576 extern char *reads(int fd, char *buf, size_t count);
577 // Reads one line a-la fgets (but doesn't save terminating '\n').
578 // Reads byte-by-byte. Useful when it is important to not read ahead.
579 // Bytes are appended to pfx (which must be malloced, or NULL).
580 extern char *xmalloc_reads(int fd, char *pfx, size_t *maxsz_p);
581 extern ssize_t read_close(int fd, void *buf, size_t maxsz);
582 extern ssize_t open_read_close(const char *filename, void *buf, size_t maxsz);
583 /* Returns NULL if file can't be opened */
584 extern void *xmalloc_open_read_close(const char *filename, size_t *maxsz_p);
585 /* Never returns NULL */
586 extern void *xmalloc_xopen_read_close(const char *filename, size_t *maxsz_p);
588 extern ssize_t safe_write(int fd, const void *buf, size_t count);
589 // NB: will return short write on error, not -1,
590 // if some data was written before error occurred
591 extern ssize_t full_write(int fd, const void *buf, size_t count);
592 extern void xwrite(int fd, const void *buf, size_t count);
594 /* Reads and prints to stdout till eof, then closes FILE. Exits on error: */
595 extern void xprint_and_close_file(FILE *file);
596 /* Reads up to (and including) TERMINATING_STRING: */
597 extern char *xmalloc_fgets_str(FILE *file, const char *terminating_string);
598 /* Chops off TERMINATING_STRING from the end: */
599 extern char *xmalloc_fgetline_str(FILE *file, const char *terminating_string);
600 /* Reads up to (and including) "\n" or NUL byte: */
601 extern char *xmalloc_fgets(FILE *file);
602 /* Chops off '\n' from the end, unlike fgets: */
603 extern char *xmalloc_fgetline(FILE *file);
604 extern char *bb_get_chunk_from_file(FILE *file, int *end);
605 extern void die_if_ferror(FILE *file, const char *msg);
606 extern void die_if_ferror_stdout(void);
607 extern void xfflush_stdout(void);
608 extern void fflush_stdout_and_exit(int retval) ATTRIBUTE_NORETURN;
609 extern int fclose_if_not_stdin(FILE *file);
610 extern FILE *xfopen(const char *filename, const char *mode);
611 /* Prints warning to stderr and returns NULL on failure: */
612 extern FILE *fopen_or_warn(const char *filename, const char *mode);
613 /* "Opens" stdin if filename is special, else just opens file: */
614 extern FILE *xfopen_stdin(const char *filename);
615 extern FILE *fopen_or_warn_stdin(const char *filename);
617 int bb_pstrcmp(const void *a, const void *b);
618 void qsort_string_vector(char **sv, unsigned count);
620 /* Wrapper which restarts poll on EINTR or ENOMEM.
621 * On other errors complains [perror("poll")] and returns.
622 * Warning! May take (much) longer than timeout_ms to return!
623 * If this is a problem, use bare poll and open-code EINTR/ENOMEM handling */
624 int safe_poll(struct pollfd *ufds, nfds_t nfds, int timeout_ms);
626 char *safe_gethostname(void);
628 /* Convert each alpha char in str to lower-case */
629 char* str_tolower(char *str);
631 char *utoa(unsigned n);
633 /* Returns a pointer past the formatted number, does NOT null-terminate */
634 char *utoa_to_buf(unsigned n, char *buf, unsigned buflen);
635 char *itoa_to_buf(int n, char *buf, unsigned buflen);
636 /* Intelligent formatters of bignums */
637 void smart_ulltoa4(unsigned long long ul, char buf[5], const char *scale);
638 void smart_ulltoa5(unsigned long long ul, char buf[5], const char *scale);
639 //TODO: provide pointer to buf (avoid statics)?
640 const char *make_human_readable_str(unsigned long long size,
641 unsigned long block_size, unsigned long display_unit);
642 /* Put a string of hex bytes ("1b2e66fe"...), return advanced pointer */
643 char *bin2hex(char *buf, const char *cp, int count);
645 /* Last element is marked by mult == 0 */
652 /* Using xatoi() instead of naive atoi() is not always convenient -
653 * in many places people want *non-negative* values, but store them
654 * in signed int. Therefore we need this one:
655 * dies if input is not in [0, INT_MAX] range. Also will reject '-0' etc */
656 int xatoi_u(const char *numstr);
657 /* Useful for reading port numbers */
658 uint16_t xatou16(const char *numstr);
661 /* These parse entries in /etc/passwd and /etc/group. This is desirable
662 * for BusyBox since we want to avoid using the glibc NSS stuff, which
663 * increases target size and is often not needed on embedded systems. */
664 long xuname2uid(const char *name);
665 long xgroup2gid(const char *name);
666 /* wrapper: allows string to contain numeric uid or gid */
667 unsigned long get_ug_id(const char *s, long (*xname2id)(const char *));
668 /* from chpst. Does not die, returns 0 on failure */
673 /* always sets uid and gid */
674 int get_uidgid(struct bb_uidgid_t*, const char*, int numeric_ok);
675 /* chown-like handling of "user[:[group]" */
676 void parse_chown_usergroup_or_die(struct bb_uidgid_t *u, char *user_group);
677 /* bb_getpwuid, bb_getgrgid:
678 * bb_getXXXid(buf, bufsz, id) - copy user/group name or id
679 * as a string to buf, return user/group name or NULL
680 * bb_getXXXid(NULL, 0, id) - return user/group name or NULL
681 * bb_getXXXid(NULL, -1, id) - return user/group name or exit
683 char *bb_getpwuid(char *name, int bufsize, long uid);
684 char *bb_getgrgid(char *group, int bufsize, long gid);
685 /* versions which cache results (useful for ps, ls etc) */
686 const char* get_cached_username(uid_t uid);
687 const char* get_cached_groupname(gid_t gid);
688 void clear_username_cache(void);
689 /* internally usernames are saved in fixed-sized char[] buffers */
690 enum { USERNAME_MAX_SIZE = 16 - sizeof(int) };
691 #if ENABLE_FEATURE_CHECK_NAMES
692 void die_if_bad_username(const char* name);
694 #define die_if_bad_username(name) ((void)(name))
697 int execable_file(const char *name);
698 char *find_execable(const char *filename);
699 int exists_execable(const char *filename);
701 /* BB_EXECxx always execs (it's not doing NOFORK/NOEXEC stuff),
702 * but it may exec busybox and call applet instead of searching PATH.
704 #if ENABLE_FEATURE_PREFER_APPLETS
705 int bb_execvp(const char *file, char *const argv[]);
706 #define BB_EXECVP(prog,cmd) bb_execvp(prog,cmd)
707 #define BB_EXECLP(prog,cmd,...) \
708 execlp((find_applet_by_name(prog) >= 0) ? CONFIG_BUSYBOX_EXEC_PATH : prog, \
711 #define BB_EXECVP(prog,cmd) execvp(prog,cmd)
712 #define BB_EXECLP(prog,cmd,...) execlp(prog,cmd, __VA_ARGS__)
715 /* NOMMU friendy fork+exec */
716 pid_t spawn(char **argv);
717 pid_t xspawn(char **argv);
719 int safe_waitpid(int pid, int *wstat, int options);
720 /* Unlike waitpid, waits ONLY for one process.
721 * It's safe to pass negative 'pids' from failed [v]fork -
722 * wait4pid will return -1 (and will not clobber [v]fork's errno).
723 * IOW: rc = wait4pid(spawn(argv));
724 * if (rc < 0) bb_perror_msg("%s", argv[0]);
725 * if (rc > 0) bb_error_msg("exit code: %d", rc);
727 int wait4pid(int pid);
728 int wait_any_nohang(int *wstat);
729 #define wait_crashed(w) ((w) & 127)
730 #define wait_exitcode(w) ((w) >> 8)
731 #define wait_stopsig(w) ((w) >> 8)
732 #define wait_stopped(w) (((w) & 127) == 127)
733 /* wait4pid(spawn(argv)) + NOFORK/NOEXEC (if configured) */
734 int spawn_and_wait(char **argv);
735 struct nofork_save_area {
737 const char *applet_name;
738 int xfunc_error_retval;
739 uint32_t option_mask32;
743 void save_nofork_data(struct nofork_save_area *save);
744 void restore_nofork_data(struct nofork_save_area *save);
745 /* Does NOT check that applet is NOFORK, just blindly runs it */
746 int run_nofork_applet(int applet_no, char **argv);
747 int run_nofork_applet_prime(struct nofork_save_area *old, int applet_no, char **argv);
749 /* Helpers for daemonization.
751 * bb_daemonize(flags) = daemonize, does not compile on NOMMU
753 * bb_daemonize_or_rexec(flags, argv) = daemonizes on MMU (and ignores argv),
754 * rexec's itself on NOMMU with argv passed as command line.
755 * Thus bb_daemonize_or_rexec may cause your <applet>_main() to be re-executed
756 * from the start. (It will detect it and not reexec again second time).
757 * You have to audit carefully that you don't do something twice as a result
758 * (opening files/sockets, parsing config files etc...)!
760 * Both of the above will redirect fd 0,1,2 to /dev/null and drop ctty
761 * (will do setsid()).
763 * forkexit_or_rexec(argv) = bare-bones "fork + parent exits" on MMU,
764 * "vfork + re-exec ourself" on NOMMU. No fd redirection, no setsid().
765 * Currently used for openvt and setsid. On MMU ignores argv.
767 * Helper for network daemons in foreground mode:
769 * bb_sanitize_stdio() = make sure that fd 0,1,2 are opened by opening them
770 * to /dev/null if they are not.
773 DAEMON_CHDIR_ROOT = 1,
774 DAEMON_DEVNULL_STDIO = 2,
775 DAEMON_CLOSE_EXTRA_FDS = 4,
776 DAEMON_ONLY_SANITIZE = 8, /* internal use */
779 void forkexit_or_rexec(void);
780 enum { re_execed = 0 };
781 # define forkexit_or_rexec(argv) forkexit_or_rexec()
782 # define bb_daemonize_or_rexec(flags, argv) bb_daemonize_or_rexec(flags)
783 # define bb_daemonize(flags) bb_daemonize_or_rexec(flags, bogus)
785 void re_exec(char **argv) ATTRIBUTE_NORETURN;
786 void forkexit_or_rexec(char **argv);
787 extern bool re_execed;
788 int BUG_fork_is_unavailable_on_nommu(void);
789 int BUG_daemon_is_unavailable_on_nommu(void);
790 void BUG_bb_daemonize_is_unavailable_on_nommu(void);
791 # define fork() BUG_fork_is_unavailable_on_nommu()
792 # define daemon(a,b) BUG_daemon_is_unavailable_on_nommu()
793 # define bb_daemonize(a) BUG_bb_daemonize_is_unavailable_on_nommu()
795 void bb_daemonize_or_rexec(int flags, char **argv);
796 void bb_sanitize_stdio(void);
797 /* Clear dangerous stuff, set PATH. Return 1 if was run by different user. */
798 int sanitize_env_if_suid(void);
801 extern const char *const bb_argv_dash[]; /* "-", NULL */
802 extern const char *opt_complementary;
803 #if ENABLE_GETOPT_LONG
804 #define No_argument "\0"
805 #define Required_argument "\001"
806 #define Optional_argument "\002"
807 extern const char *applet_long_options;
809 extern uint32_t option_mask32;
810 extern uint32_t getopt32(char **argv, const char *applet_opts, ...);
813 typedef struct llist_t {
815 struct llist_t *link;
817 void llist_add_to(llist_t **old_head, void *data);
818 void llist_add_to_end(llist_t **list_head, void *data);
819 void *llist_pop(llist_t **elm);
820 void llist_unlink(llist_t **head, llist_t *elm);
821 void llist_free(llist_t *elm, void (*freeit)(void *data));
822 llist_t *llist_rev(llist_t *list);
823 /* BTW, surprisingly, changing API to
824 * llist_t *llist_add_to(llist_t *old_head, void *data)
825 * etc does not result in smaller code... */
827 /* start_stop_daemon and udhcpc are special - they want
828 * to create pidfiles regardless of FEATURE_PIDFILE */
829 #if ENABLE_FEATURE_PIDFILE || defined(WANT_PIDFILE)
830 /* True only if we created pidfile which is *file*, not /dev/null etc */
831 extern smallint wrote_pidfile;
832 void write_pidfile(const char *path);
833 #define remove_pidfile(path) do { if (wrote_pidfile) unlink(path); } while (0)
835 enum { wrote_pidfile = 0 };
836 #define write_pidfile(path) ((void)0)
837 #define remove_pidfile(path) ((void)0)
842 LOGMODE_STDIO = (1 << 0),
843 LOGMODE_SYSLOG = (1 << 1) * ENABLE_FEATURE_SYSLOG,
844 LOGMODE_BOTH = LOGMODE_SYSLOG + LOGMODE_STDIO,
846 extern const char *msg_eol;
847 extern smallint logmode;
848 extern int die_sleep;
849 extern int xfunc_error_retval;
850 extern jmp_buf die_jmp;
851 extern void xfunc_die(void) ATTRIBUTE_NORETURN;
852 extern void bb_show_usage(void) ATTRIBUTE_NORETURN;
853 extern void bb_error_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2)));
854 extern void bb_error_msg_and_die(const char *s, ...) __attribute__ ((noreturn, format (printf, 1, 2)));
855 extern void bb_perror_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2)));
856 extern void bb_simple_perror_msg(const char *s);
857 extern void bb_perror_msg_and_die(const char *s, ...) __attribute__ ((noreturn, format (printf, 1, 2)));
858 extern void bb_simple_perror_msg_and_die(const char *s) __attribute__ ((noreturn));
859 extern void bb_herror_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2)));
860 extern void bb_herror_msg_and_die(const char *s, ...) __attribute__ ((noreturn, format (printf, 1, 2)));
861 extern void bb_perror_nomsg_and_die(void) ATTRIBUTE_NORETURN;
862 extern void bb_perror_nomsg(void);
863 extern void bb_info_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2)));
864 extern void bb_verror_msg(const char *s, va_list p, const char *strerr);
866 /* We need to export XXX_main from libbusybox
867 * only if we build "individual" binaries
869 #if ENABLE_FEATURE_INDIVIDUAL
870 #define MAIN_EXTERNALLY_VISIBLE EXTERNALLY_VISIBLE
872 #define MAIN_EXTERNALLY_VISIBLE
876 /* applets which are useful from another applets */
877 int bb_cat(char** argv);
878 /* If shell needs them, these three "exist" even if not enabled as applets */
879 int echo_main(int argc, char** argv) USE_ECHO(MAIN_EXTERNALLY_VISIBLE);
880 int test_main(int argc, char **argv) USE_TEST(MAIN_EXTERNALLY_VISIBLE);
881 int kill_main(int argc, char **argv) USE_KILL(MAIN_EXTERNALLY_VISIBLE);
882 int chown_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
883 int gunzip_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
884 int bunzip2_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
885 int bbunpack(char **argv,
886 char* (*make_new_name)(char *filename),
887 USE_DESKTOP(long long) int (*unpacker)(void)
890 void bb_displayroutes(int noresolve, int netstatfmt);
895 int create_icmp_socket(void);
896 int create_icmp6_socket(void);
898 /* This structure defines protocol families and their handlers. */
904 char *(*print) (unsigned char *);
905 const char *(*sprint) (struct sockaddr *, int numeric);
906 int (*input) (/*int type,*/ const char *bufp, struct sockaddr *);
907 void (*herror) (char *text);
908 int (*rprint) (int options);
909 int (*rinput) (int typ, int ext, char **argv);
912 int (*getmask) (char *src, struct sockaddr * mask, char *name);
914 /* This structure defines hardware protocols and their handlers. */
920 char *(*print) (unsigned char *);
921 int (*input) (const char *, struct sockaddr *);
922 int (*activate) (int fd);
923 int suppress_null_addr;
925 extern smallint interface_opt_a;
926 int display_interfaces(char *ifname);
927 const struct aftype *get_aftype(const char *name);
928 const struct hwtype *get_hwtype(const char *name);
929 const struct hwtype *get_hwntype(int type);
932 #ifndef BUILD_INDIVIDUAL
933 extern int find_applet_by_name(const char *name);
934 /* Returns only if applet is not found. */
935 extern void run_applet_and_exit(const char *name, char **argv);
936 extern void run_applet_no_and_exit(int a, char **argv) ATTRIBUTE_NORETURN;
940 extern int match_fstype(const struct mntent *mt, const char *fstypes);
941 extern struct mntent *find_mount_point(const char *name, const char *table);
943 extern void erase_mtab(const char * name);
944 extern unsigned int tty_baud_to_value(speed_t speed);
945 extern speed_t tty_value_to_baud(unsigned int value);
946 extern void bb_warn_ignoring_args(int n);
948 extern int get_linux_version_code(void);
950 extern char *query_loop(const char *device);
951 extern int del_loop(const char *device);
952 /* If *devname is not NULL, use that name, otherwise try to find free one,
953 * malloc and return it in *devname.
954 * return value: 1: read-only loopdev was setup, 0: rw, < 0: error */
955 extern int set_loop(char **devname, const char *file, unsigned long long offset);
958 //TODO: pass buf pointer or return allocated buf (avoid statics)?
959 char *bb_askpass(int timeout, const char * prompt);
960 int bb_ask_confirmation(void);
962 extern int bb_parse_mode(const char* s, mode_t* theMode);
964 /* Concatenate path and filename to new allocated buffer.
965 * Add "/" only as needed (no duplicate "//" are produced).
966 * If path is NULL, it is assumed to be "/".
967 * filename should not be NULL. */
968 char *concat_path_file(const char *path, const char *filename);
969 char *concat_subpath_file(const char *path, const char *filename);
970 const char *bb_basename(const char *name);
971 /* NB: can violate const-ness (similarly to strchr) */
972 char *last_char_is(const char *s, int c);
975 USE_DESKTOP(long long) int uncompress(int fd_in, int fd_out);
976 int inflate(int in, int out);
979 int bb_make_directory(char *path, long mode, int flags);
981 int get_signum(const char *name);
982 const char *get_signame(int number);
983 void print_signames(void);
985 char *bb_simplify_path(const char *path);
988 extern void bb_do_delay(int seconds);
989 extern void change_identity(const struct passwd *pw);
990 extern void run_shell(const char *shell, int loginshell, const char *command, const char **additional_args) ATTRIBUTE_NORETURN;
991 extern void run_shell(const char *shell, int loginshell, const char *command, const char **additional_args);
993 extern void renew_current_security_context(void);
994 extern void set_current_security_context(security_context_t sid);
995 extern context_t set_security_context_component(security_context_t cur_context,
996 char *user, char *role, char *type, char *range);
997 extern void setfscreatecon_or_die(security_context_t scontext);
998 extern void selinux_preserve_fcontext(int fdesc);
1000 #define selinux_preserve_fcontext(fdesc) ((void)0)
1002 extern void selinux_or_die(void);
1003 extern int restricted_shell(const char *shell);
1005 /* setup_environment:
1006 * if clear_env = 1: cd(pw->pw_dir), clear environment, then set
1008 * USER=pw->pw_name, LOGNAME=pw->pw_name
1009 * PATH=bb_default_[root_]path
1012 * else if change_env = 1:
1013 * if not root (if pw->pw_uid != 0):
1014 * USER=pw->pw_name, LOGNAME=pw->pw_name
1019 extern void setup_environment(const char *shell, int clear_env, int change_env, const struct passwd *pw);
1020 extern int correct_password(const struct passwd *pw);
1021 /* Returns a ptr to static storage */
1022 extern char *pw_encrypt(const char *clear, const char *salt);
1023 extern int obscure(const char *old, const char *newval, const struct passwd *pwdp);
1025 int index_in_str_array(const char *const string_array[], const char *key);
1026 int index_in_strings(const char *strings, const char *key);
1027 int index_in_substr_array(const char *const string_array[], const char *key);
1028 int index_in_substrings(const char *strings, const char *key);
1029 const char *nth_string(const char *strings, int n);
1031 extern void print_login_issue(const char *issue_file, const char *tty);
1032 extern void print_login_prompt(void);
1034 /* rnd is additional random input. New one is returned.
1035 * Useful if you call crypt_make_salt many times in a row:
1036 * rnd = crypt_make_salt(buf1, 4, 0);
1037 * rnd = crypt_make_salt(buf2, 4, rnd);
1038 * rnd = crypt_make_salt(buf3, 4, rnd);
1039 * (otherwise we risk having same salt generated)
1041 extern int crypt_make_salt(char *p, int cnt, int rnd);
1043 /* Returns number of lines changed, or -1 on error */
1044 extern int update_passwd(const char *filename, const char *username,
1045 const char *new_pw);
1047 /* NB: typically you want to pass fd 0, not 1. Think 'applet | grep something' */
1048 int get_terminal_width_height(int fd, int *width, int *height);
1050 /* NB: "unsigned request" is crucial! "int request" will break some arches! */
1051 int ioctl_or_perror(int fd, unsigned request, void *argp, const char *fmt,...) __attribute__ ((format (printf, 4, 5)));
1052 int ioctl_or_perror_and_die(int fd, unsigned request, void *argp, const char *fmt,...) __attribute__ ((format (printf, 4, 5)));
1053 #if ENABLE_IOCTL_HEX2STR_ERROR
1054 int bb_ioctl_or_warn(int fd, unsigned request, void *argp, const char *ioctl_name);
1055 int bb_xioctl(int fd, unsigned request, void *argp, const char *ioctl_name);
1056 #define ioctl_or_warn(fd,request,argp) bb_ioctl_or_warn(fd,request,argp,#request)
1057 #define xioctl(fd,request,argp) bb_xioctl(fd,request,argp,#request)
1059 int bb_ioctl_or_warn(int fd, unsigned request, void *argp);
1060 int bb_xioctl(int fd, unsigned request, void *argp);
1061 #define ioctl_or_warn(fd,request,argp) bb_ioctl_or_warn(fd,request,argp)
1062 #define xioctl(fd,request,argp) bb_xioctl(fd,request,argp)
1065 char *is_in_ino_dev_hashtable(const struct stat *statbuf);
1066 void add_to_ino_dev_hashtable(const struct stat *statbuf, const char *name);
1067 void reset_ino_dev_hashtable(void);
1069 /* At least glibc has horrendously large inline for this, so wrap it */
1070 unsigned long long bb_makedev(unsigned int major, unsigned int minor);
1072 #define makedev(a,b) bb_makedev(a,b)
1076 #if ENABLE_FEATURE_EDITING
1077 /* It's NOT just ENABLEd or disabled. It's a number: */
1078 #ifdef CONFIG_FEATURE_EDITING_HISTORY
1079 #define MAX_HISTORY (CONFIG_FEATURE_EDITING_HISTORY + 0)
1081 #define MAX_HISTORY 0
1083 typedef struct line_input_t {
1085 const char *path_lookup;
1089 USE_FEATURE_EDITING_SAVEHISTORY(const char *hist_file;)
1090 char *history[MAX_HISTORY + 1];
1094 DO_HISTORY = 1 * (MAX_HISTORY > 0),
1095 SAVE_HISTORY = 2 * (MAX_HISTORY > 0) * ENABLE_FEATURE_EDITING_SAVEHISTORY,
1096 TAB_COMPLETION = 4 * ENABLE_FEATURE_TAB_COMPLETION,
1097 USERNAME_COMPLETION = 8 * ENABLE_FEATURE_USERNAME_COMPLETION,
1098 VI_MODE = 0x10 * ENABLE_FEATURE_EDITING_VI,
1099 WITH_PATH_LOOKUP = 0x20,
1100 FOR_SHELL = DO_HISTORY | SAVE_HISTORY | TAB_COMPLETION | USERNAME_COMPLETION,
1102 line_input_t *new_line_input_t(int flags);
1104 * -1 on read errors or EOF, or on bare Ctrl-D,
1105 * 0 on ctrl-C (the line entered is still returned in 'command'),
1106 * >0 length of input string, including terminating '\n'
1108 int read_line_input(const char* prompt, char* command, int maxsize, line_input_t *state);
1110 int read_line_input(const char* prompt, char* command, int maxsize);
1111 #define read_line_input(prompt, command, maxsize, state) \
1112 read_line_input(prompt, command, maxsize)
1117 #ifdef TASK_COMM_LEN
1118 enum { COMM_LEN = TASK_COMM_LEN };
1120 /* synchronize with sizeof(task_struct.comm) in /usr/include/linux/sched.h */
1121 enum { COMM_LEN = 16 };
1124 typedef struct procps_status_t {
1126 uint8_t shift_pages_to_bytes;
1127 uint8_t shift_pages_to_kb;
1128 /* Fields are set to 0/NULL if failed to determine (or not requested) */
1130 USE_SELINUX(char *context;)
1131 /* Everything below must contain no ptrs to malloc'ed data:
1132 * it is memset(0) for each process in procps_scan() */
1133 unsigned long vsz, rss; /* we round it to kbytes */
1134 unsigned long stime, utime;
1135 unsigned long start_time;
1142 unsigned tty_major,tty_minor;
1143 #if ENABLE_FEATURE_TOPMEM
1144 unsigned long mapped_rw;
1145 unsigned long mapped_ro;
1146 unsigned long shared_clean;
1147 unsigned long shared_dirty;
1148 unsigned long private_clean;
1149 unsigned long private_dirty;
1150 unsigned long stack;
1153 /* basename of executable in exec(2), read from /proc/N/stat
1154 * (if executable is symlink or script, it is NOT replaced
1155 * by link target or interpreter name) */
1156 char comm[COMM_LEN];
1157 /* user/group? - use passwd/group parsing functions */
1160 PSSCAN_PID = 1 << 0,
1161 PSSCAN_PPID = 1 << 1,
1162 PSSCAN_PGID = 1 << 2,
1163 PSSCAN_SID = 1 << 3,
1164 PSSCAN_UIDGID = 1 << 4,
1165 PSSCAN_COMM = 1 << 5,
1166 /* PSSCAN_CMD = 1 << 6, - use read_cmdline instead */
1167 PSSCAN_ARGV0 = 1 << 7,
1168 /* PSSCAN_EXE = 1 << 8, - not implemented */
1169 PSSCAN_STATE = 1 << 9,
1170 PSSCAN_VSZ = 1 << 10,
1171 PSSCAN_RSS = 1 << 11,
1172 PSSCAN_STIME = 1 << 12,
1173 PSSCAN_UTIME = 1 << 13,
1174 PSSCAN_TTY = 1 << 14,
1175 PSSCAN_SMAPS = (1 << 15) * ENABLE_FEATURE_TOPMEM,
1176 PSSCAN_ARGVN = (1 << 16) * (ENABLE_PGREP | ENABLE_PKILL),
1177 USE_SELINUX(PSSCAN_CONTEXT = 1 << 17,)
1178 PSSCAN_START_TIME = 1 << 18,
1179 /* These are all retrieved from proc/NN/stat in one go: */
1180 PSSCAN_STAT = PSSCAN_PPID | PSSCAN_PGID | PSSCAN_SID
1181 | PSSCAN_COMM | PSSCAN_STATE
1182 | PSSCAN_VSZ | PSSCAN_RSS
1183 | PSSCAN_STIME | PSSCAN_UTIME | PSSCAN_START_TIME
1186 //procps_status_t* alloc_procps_scan(void);
1187 void free_procps_scan(procps_status_t* sp);
1188 procps_status_t* procps_scan(procps_status_t* sp, int flags);
1189 /* Format cmdline (up to col chars) into char buf[col+1] */
1190 /* Puts [comm] if cmdline is empty (-> process is a kernel thread) */
1191 void read_cmdline(char *buf, int col, unsigned pid, const char *comm);
1192 pid_t *find_pid_by_name(const char* procName);
1193 pid_t *pidlist_reverse(pid_t *pidList);
1196 extern const char bb_uuenc_tbl_base64[];
1197 extern const char bb_uuenc_tbl_std[];
1198 void bb_uuencode(char *store, const void *s, int length, const char *tbl);
1200 typedef struct sha1_ctx_t {
1205 void sha1_begin(sha1_ctx_t *ctx);
1206 void sha1_hash(const void *data, size_t length, sha1_ctx_t *ctx);
1207 void *sha1_end(void *resbuf, sha1_ctx_t *ctx);
1209 typedef struct md5_ctx_t {
1218 void md5_begin(md5_ctx_t *ctx);
1219 void md5_hash(const void *data, size_t length, md5_ctx_t *ctx);
1220 void *md5_end(void *resbuf, md5_ctx_t *ctx);
1222 uint32_t *crc32_filltable(uint32_t *tbl256, int endian);
1225 extern const char *applet_name;
1226 /* "BusyBox vN.N.N (timestamp or extra_version)" */
1227 extern const char bb_banner[];
1228 extern const char bb_msg_memory_exhausted[];
1229 extern const char bb_msg_invalid_date[];
1230 extern const char bb_msg_read_error[];
1231 extern const char bb_msg_write_error[];
1232 extern const char bb_msg_unknown[];
1233 extern const char bb_msg_can_not_create_raw_socket[];
1234 extern const char bb_msg_perm_denied_are_you_root[];
1235 extern const char bb_msg_requires_arg[];
1236 extern const char bb_msg_invalid_arg[];
1237 extern const char bb_msg_standard_input[];
1238 extern const char bb_msg_standard_output[];
1240 extern const char bb_str_default[];
1241 /* NB: (bb_hexdigits_upcase[i] | 0x20) -> lowercase hex digit */
1242 extern const char bb_hexdigits_upcase[];
1244 extern const char bb_path_mtab_file[];
1245 extern const char bb_path_passwd_file[];
1246 extern const char bb_path_shadow_file[];
1247 extern const char bb_path_gshadow_file[];
1248 extern const char bb_path_group_file[];
1249 extern const char bb_path_motd_file[];
1250 extern const char bb_path_wtmp_file[];
1251 extern const char bb_dev_null[];
1252 extern const char bb_busybox_exec_path[];
1253 /* util-linux manpage says /sbin:/bin:/usr/sbin:/usr/bin,
1254 * but I want to save a few bytes here */
1255 extern const char bb_PATH_root_path[]; /* "PATH=/sbin:/usr/sbin:/bin:/usr/bin" */
1256 #define bb_default_root_path (bb_PATH_root_path + sizeof("PATH"))
1257 #define bb_default_path (bb_PATH_root_path + sizeof("PATH=/sbin:/usr/sbin"))
1259 extern const int const_int_0;
1260 extern const int const_int_1;
1266 /* Providing hard guarantee on minimum size (think of BUFSIZ == 128) */
1267 enum { COMMON_BUFSIZE = (BUFSIZ >= 256*sizeof(void*) ? BUFSIZ+1 : 256*sizeof(void*)) };
1268 extern char bb_common_bufsiz1[COMMON_BUFSIZE];
1269 /* This struct is deliberately not defined. */
1270 /* See docs/keep_data_small.txt */
1272 /* '*const' ptr makes gcc optimize code much better.
1273 * Magic prevents ptr_to_globals from going into rodata.
1274 * If you want to assign a value, use SET_PTR_TO_GLOBALS(x) */
1275 extern struct globals *const ptr_to_globals;
1276 /* At least gcc 3.4.6 on mipsel system needs optimization barrier */
1277 #define barrier() asm volatile("":::"memory")
1278 #define SET_PTR_TO_GLOBALS(x) do { \
1279 (*(struct globals**)&ptr_to_globals) = (x); \
1283 /* You can change LIBBB_DEFAULT_LOGIN_SHELL, but don't use it,
1284 * use bb_default_login_shell and following defines.
1285 * If you change LIBBB_DEFAULT_LOGIN_SHELL,
1286 * don't forget to change increment constant. */
1287 #define LIBBB_DEFAULT_LOGIN_SHELL "-/bin/sh"
1288 extern const char bb_default_login_shell[];
1290 #define DEFAULT_SHELL (bb_default_login_shell+1)
1292 #define DEFAULT_SHELL_SHORT_NAME (bb_default_login_shell+6)
1295 #if ENABLE_FEATURE_DEVFS
1296 # define CURRENT_VC "/dev/vc/0"
1297 # define VC_1 "/dev/vc/1"
1298 # define VC_2 "/dev/vc/2"
1299 # define VC_3 "/dev/vc/3"
1300 # define VC_4 "/dev/vc/4"
1301 # define VC_5 "/dev/vc/5"
1302 #if defined(__sh__) || defined(__H8300H__) || defined(__H8300S__)
1303 /* Yes, this sucks, but both SH (including sh64) and H8 have a SCI(F) for their
1304 respective serial ports .. as such, we can't use the common device paths for
1306 # define SC_0 "/dev/ttsc/0"
1307 # define SC_1 "/dev/ttsc/1"
1308 # define SC_FORMAT "/dev/ttsc/%d"
1310 # define SC_0 "/dev/tts/0"
1311 # define SC_1 "/dev/tts/1"
1312 # define SC_FORMAT "/dev/tts/%d"
1314 # define VC_FORMAT "/dev/vc/%d"
1315 # define LOOP_FORMAT "/dev/loop/%d"
1316 # define LOOP_NAMESIZE (sizeof("/dev/loop/") + sizeof(int)*3 + 1)
1317 # define LOOP_NAME "/dev/loop/"
1318 # define FB_0 "/dev/fb/0"
1320 # define CURRENT_VC "/dev/tty0"
1321 # define VC_1 "/dev/tty1"
1322 # define VC_2 "/dev/tty2"
1323 # define VC_3 "/dev/tty3"
1324 # define VC_4 "/dev/tty4"
1325 # define VC_5 "/dev/tty5"
1326 #if defined(__sh__) || defined(__H8300H__) || defined(__H8300S__)
1327 # define SC_0 "/dev/ttySC0"
1328 # define SC_1 "/dev/ttySC1"
1329 # define SC_FORMAT "/dev/ttySC%d"
1331 # define SC_0 "/dev/ttyS0"
1332 # define SC_1 "/dev/ttyS1"
1333 # define SC_FORMAT "/dev/ttyS%d"
1335 # define VC_FORMAT "/dev/tty%d"
1336 # define LOOP_FORMAT "/dev/loop%d"
1337 # define LOOP_NAMESIZE (sizeof("/dev/loop") + sizeof(int)*3 + 1)
1338 # define LOOP_NAME "/dev/loop"
1339 # define FB_0 "/dev/fb0"
1342 /* The following devices are the same on devfs and non-devfs systems. */
1343 #define CURRENT_TTY "/dev/tty"
1344 #define DEV_CONSOLE "/dev/console"
1347 #ifndef RB_POWER_OFF
1348 /* Stop system and switch power off if possible. */
1349 #define RB_POWER_OFF 0x4321fedc
1352 /* Make sure we call functions instead of macros. */
1366 /* This one is more efficient - we save ~400 bytes */
1368 #define isdigit(a) ((unsigned)((a) - '0') <= 9)
1370 #define ARRAY_SIZE(x) ((unsigned)(sizeof(x) / sizeof((x)[0])))
1373 #if __GNUC_PREREQ(4,1)
1374 # pragma GCC visibility pop
1378 #endif /* __LIBBUSYBOX_H__ */