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, do it ourself */
83 extern char **environ;
85 /* Set the group set for the current user to GROUPS (N of them). */
86 int setgroups(size_t n, const gid_t *groups);
87 #if defined(__GLIBC__) && __GLIBC__ < 2
88 int vdprintf(int d, const char *format, va_list ap);
90 /* klogctl is in libc's klog.h, but we cheat and not #include that */
91 int klogctl(int type, char *b, int len);
92 /* This is declared here rather than #including <libgen.h> in order to avoid
93 * confusing the two versions of basename. See the dirname/basename man page
95 char *dirname(char *path);
96 /* Include our own copy of struct sysinfo to avoid binary compatibility
97 * problems with Linux 2.4, which changed things. Grumble, grumble. */
99 long uptime; /* Seconds since boot */
100 unsigned long loads[3]; /* 1, 5, and 15 minute load averages */
101 unsigned long totalram; /* Total usable main memory size */
102 unsigned long freeram; /* Available memory size */
103 unsigned long sharedram; /* Amount of shared memory */
104 unsigned long bufferram; /* Memory used by buffers */
105 unsigned long totalswap; /* Total swap space size */
106 unsigned long freeswap; /* swap space still available */
107 unsigned short procs; /* Number of current processes */
108 unsigned short pad; /* Padding needed for m68k */
109 unsigned long totalhigh; /* Total high memory size */
110 unsigned long freehigh; /* Available high memory size */
111 unsigned int mem_unit; /* Memory unit size in bytes */
112 char _f[20 - 2*sizeof(long) - sizeof(int)]; /* Padding: libc5 uses this.. */
114 int sysinfo(struct sysinfo* info);
117 /* Make all declarations hidden (-fvisibility flag only affects definitions) */
118 /* (don't include system headers after this until corresponding pop!) */
119 #if __GNUC_PREREQ(4,1)
120 # pragma GCC visibility push(hidden)
124 #if ENABLE_USE_BB_PWD_GRP
128 #if ENABLE_FEATURE_SHADOWPASSWDS
129 # if ENABLE_USE_BB_SHADOW
130 # include "shadow_.h"
134 /* Tested to work correctly with all int types (IIRC :]) */
135 #define MAXINT(T) (T)( \
138 : (T)~((T)1 << (sizeof(T)*8-1)) \
141 #define MININT(T) (T)( \
144 : ((T)1 << (sizeof(T)*8-1)) \
147 /* Large file support */
148 /* Note that CONFIG_LFS=y forces bbox to be built with all common ops
149 * (stat, lseek etc) mapped to "largefile" variants by libc.
150 * Practically it means that open() automatically has O_LARGEFILE added
151 * and all filesize/file_offset parameters and struct members are "large"
152 * (in today's world - signed 64bit). For full support of large files,
153 * we need a few helper #defines (below) and careful use of off_t
154 * instead of int/ssize_t. No lseek64(), O_LARGEFILE etc necessary */
156 /* CONFIG_LFS is on */
157 # if ULONG_MAX > 0xffffffff
158 /* "long" is long enough on this system */
159 # define XATOOFF(a) xatoul_range(a, 0, LONG_MAX)
160 /* usage: sz = BB_STRTOOFF(s, NULL, 10); if (errno || sz < 0) die(); */
161 # define BB_STRTOOFF bb_strtoul
162 # define STRTOOFF strtoul
163 /* usage: printf("size: %"OFF_FMT"d (%"OFF_FMT"x)\n", sz, sz); */
166 /* "long" is too short, need "long long" */
167 # define XATOOFF(a) xatoull_range(a, 0, LLONG_MAX)
168 # define BB_STRTOOFF bb_strtoull
169 # define STRTOOFF strtoull
170 # define OFF_FMT "ll"
173 /* CONFIG_LFS is off */
174 # if UINT_MAX == 0xffffffff
175 /* While sizeof(off_t) == sizeof(int), off_t is typedef'ed to long anyway.
176 * gcc will throw warnings on printf("%d", off_t). Crap... */
177 # define XATOOFF(a) xatoi_u(a)
178 # define BB_STRTOOFF bb_strtou
179 # define STRTOOFF strtol
182 # define XATOOFF(a) xatoul_range(a, 0, LONG_MAX)
183 # define BB_STRTOOFF bb_strtoul
184 # define STRTOOFF strtol
188 /* scary. better ideas? (but do *test* them first!) */
189 #define OFF_T_MAX ((off_t)~((off_t)1 << (sizeof(off_t)*8-1)))
191 /* Some useful definitions */
193 #define FALSE ((int) 0)
195 #define TRUE ((int) 1)
197 #define SKIP ((int) 2)
200 #define MTAB_GETMOUNTPT '1'
201 #define MTAB_GETDEVICE '2'
203 #define BUF_SIZE 8192
204 #define EXPAND_ALLOC 1024
206 /* Macros for min/max. */
208 #define MIN(a,b) (((a)<(b))?(a):(b))
212 #define MAX(a,b) (((a)>(b))?(a):(b))
215 /* buffer allocation schemes */
216 #if ENABLE_FEATURE_BUFFERS_GO_ON_STACK
217 #define RESERVE_CONFIG_BUFFER(buffer,len) char buffer[len]
218 #define RESERVE_CONFIG_UBUFFER(buffer,len) unsigned char buffer[len]
219 #define RELEASE_CONFIG_BUFFER(buffer) ((void)0)
221 #if ENABLE_FEATURE_BUFFERS_GO_IN_BSS
222 #define RESERVE_CONFIG_BUFFER(buffer,len) static char buffer[len]
223 #define RESERVE_CONFIG_UBUFFER(buffer,len) static unsigned char buffer[len]
224 #define RELEASE_CONFIG_BUFFER(buffer) ((void)0)
226 #define RESERVE_CONFIG_BUFFER(buffer,len) char *buffer = xmalloc(len)
227 #define RESERVE_CONFIG_UBUFFER(buffer,len) unsigned char *buffer = xmalloc(len)
228 #define RELEASE_CONFIG_BUFFER(buffer) free(buffer)
232 #if defined(__GLIBC__)
233 /* glibc uses __errno_location() to get a ptr to errno */
234 /* We can just memorize it once - no multithreading in busybox :) */
235 extern int *const bb_errno;
237 #define errno (*bb_errno)
240 unsigned long long monotonic_us(void);
241 unsigned monotonic_sec(void);
243 extern void chomp(char *s);
244 extern void trim(char *s);
245 extern char *skip_whitespace(const char *);
246 extern char *skip_non_whitespace(const char *);
247 extern char *strrstr(const char *haystack, const char *needle);
249 //TODO: supply a pointer to char[11] buffer (avoid statics)?
250 extern const char *bb_mode_string(mode_t mode);
251 extern int is_directory(const char *name, int followLinks, struct stat *statBuf);
252 enum { /* DO NOT CHANGE THESE VALUES! cp.c, mv.c, install.c depend on them. */
253 FILEUTILS_PRESERVE_STATUS = 1,
254 FILEUTILS_DEREFERENCE = 2,
257 FILEUTILS_INTERACTIVE = 0x10,
258 FILEUTILS_MAKE_HARDLINK = 0x20,
259 FILEUTILS_MAKE_SOFTLINK = 0x40,
260 FILEUTILS_DEREF_SOFTLINK = 0x80,
262 FILEUTILS_PRESERVE_SECURITY_CONTEXT = 0x100,
263 FILEUTILS_SET_SECURITY_CONTEXT = 0x200
266 #define FILEUTILS_CP_OPTSTR "pdRfilsL" USE_SELINUX("c")
267 extern int remove_file(const char *path, int flags);
268 /* NB: without FILEUTILS_RECUR in flags, it will basically "cat"
269 * the source, not copy (unless "source" is a directory).
270 * This makes "cp /dev/null file" and "install /dev/null file" (!!!)
271 * work coreutils-compatibly. */
272 extern int copy_file(const char *source, const char *dest, int flags);
275 ACTION_RECURSE = (1 << 0),
276 ACTION_FOLLOWLINKS = (1 << 1),
277 ACTION_FOLLOWLINKS_L0 = (1 << 2),
278 ACTION_DEPTHFIRST = (1 << 3),
279 /*ACTION_REVERSE = (1 << 4), - unused */
281 extern int recursive_action(const char *fileName, unsigned flags,
282 int (*fileAction) (const char *fileName, struct stat* statbuf, void* userData, int depth),
283 int (*dirAction) (const char *fileName, struct stat* statbuf, void* userData, int depth),
284 void* userData, unsigned depth);
285 extern int device_open(const char *device, int mode);
286 enum { GETPTY_BUFSIZE = 16 }; /* more than enough for "/dev/ttyXXX" */
287 extern int xgetpty(char *line);
288 extern int get_console_fd(void);
289 extern void console_make_active(int fd, const int vt_num);
290 extern char *find_block_device(const char *path);
291 /* bb_copyfd_XX print read/write errors and return -1 if they occur */
292 extern off_t bb_copyfd_eof(int fd1, int fd2);
293 extern off_t bb_copyfd_size(int fd1, int fd2, off_t size);
294 extern void bb_copyfd_exact_size(int fd1, int fd2, off_t size);
295 /* "short" copy can be detected by return value < size */
296 /* this helper yells "short read!" if param is not -1 */
297 extern void complain_copyfd_and_die(off_t sz) ATTRIBUTE_NORETURN;
298 extern char bb_process_escape_sequence(const char **ptr);
299 /* xxxx_strip version can modify its parameter:
303 * "abc/def/" -> "def" !!
305 extern char *bb_get_last_path_component_strip(char *path);
306 /* "abc/def/" -> "" and it never modifies 'path' */
307 extern char *bb_get_last_path_component_nostrip(const char *path);
309 int ndelay_on(int fd);
310 int ndelay_off(int fd);
311 int close_on_exec_on(int fd);
312 void xdup2(int, int);
313 void xmove_fd(int, int);
316 DIR *xopendir(const char *path);
317 DIR *warn_opendir(const char *path);
319 /* UNUSED: char *xmalloc_realpath(const char *path); */
320 char *xmalloc_readlink(const char *path);
321 char *xmalloc_readlink_or_warn(const char *path);
322 char *xrealloc_getcwd_or_warn(char *cwd);
324 char *xmalloc_follow_symlinks(const char *path);
328 /* bb_signals(BB_FATAL_SIGS, handler) catches all signals which
329 * otherwise would kill us, except for those resulting from bugs:
330 * SIGSEGV, SIGILL, SIGFPE.
331 * Other fatal signals not included (TODO?):
332 * SIGBUS Bus error (bad memory access)
333 * SIGPOLL Pollable event. Synonym of SIGIO
334 * SIGPROF Profiling timer expired
335 * SIGSYS Bad argument to routine
336 * SIGTRAP Trace/breakpoint trap
338 * The only known arch with some of these sigs not fitting
339 * into 32 bits is parisc (SIGXCPU=33, SIGXFSZ=34, SIGSTKFLT=36).
340 * Dance around with long long to guard against that...
342 BB_FATAL_SIGS = (int)(0
346 + (1LL << SIGPIPE) // Write to pipe with no readers
347 + (1LL << SIGQUIT) // Quit from keyboard
348 + (1LL << SIGABRT) // Abort signal from abort(3)
349 + (1LL << SIGALRM) // Timer signal from alarm(2)
350 + (1LL << SIGVTALRM) // Virtual alarm clock
351 + (1LL << SIGXCPU) // CPU time limit exceeded
352 + (1LL << SIGXFSZ) // File size limit exceeded
353 + (1LL << SIGUSR1) // Yes kids, these are also fatal!
357 void bb_signals(int sigs, void (*f)(int));
358 /* Unlike signal() and bb_signals, sets handler with sigaction()
359 * and in a way that while signal handler is run, no other signals
360 * will be blocked: */
361 void bb_signals_recursive(int sigs, void (*f)(int));
362 /* syscalls like read() will be interrupted with EINTR: */
363 void signal_no_SA_RESTART_empty_mask(int sig, void (*handler)(int));
364 /* syscalls like read() won't be interrupted (though select/poll will be): */
365 void signal_SA_RESTART_empty_mask(int sig, void (*handler)(int));
366 void wait_for_any_sig(void);
367 void kill_myself_with_sig(int sig) ATTRIBUTE_NORETURN;
368 void sig_block(int sig);
369 void sig_unblock(int sig);
370 /* Will do sigaction(signum, act, NULL): */
371 int sigaction_set(int sig, const struct sigaction *act);
372 /* SIG_BLOCK/SIG_UNBLOCK all signals: */
373 int sigprocmask_allsigs(int how);
376 void xsetgid(gid_t gid);
377 void xsetuid(uid_t uid);
378 void xchdir(const char *path);
379 void xchroot(const char *path);
380 void xsetenv(const char *key, const char *value);
381 void xunlink(const char *pathname);
382 void xstat(const char *pathname, struct stat *buf);
383 int xopen(const char *pathname, int flags);
384 int xopen3(const char *pathname, int flags, int mode);
385 int open_or_warn(const char *pathname, int flags);
386 int open3_or_warn(const char *pathname, int flags, int mode);
387 int open_or_warn_stdin(const char *pathname);
388 void xrename(const char *oldpath, const char *newpath);
389 int rename_or_warn(const char *oldpath, const char *newpath);
390 off_t xlseek(int fd, off_t offset, int whence);
391 off_t fdlength(int fd);
393 void xpipe(int filedes[2]);
394 /* In this form code with pipes is much more readable */
395 struct fd_pair { int rd; int wr; };
396 #define piped_pair(pair) pipe(&((pair).rd))
397 #define xpiped_pair(pair) xpipe(&((pair).rd))
399 /* Useful for having small structure members/global variables */
400 typedef int8_t socktype_t;
401 typedef int8_t family_t;
402 struct BUG_too_small {
403 char BUG_socktype_t_too_small[(0
410 char BUG_family_t_too_small[(0
427 int xsocket(int domain, int type, int protocol);
428 void xbind(int sockfd, struct sockaddr *my_addr, socklen_t addrlen);
429 void xlisten(int s, int backlog);
430 void xconnect(int s, const struct sockaddr *s_addr, socklen_t addrlen);
431 ssize_t xsendto(int s, const void *buf, size_t len, const struct sockaddr *to,
433 /* SO_REUSEADDR allows a server to rebind to an address that is already
434 * "in use" by old connections to e.g. previous server instance which is
435 * killed or crashed. Without it bind will fail until all such connections
436 * time out. Linux does not allow multiple live binds on same ip:port
437 * regardless of SO_REUSEADDR (unlike some other flavors of Unix).
438 * Turn it on before you call bind(). */
439 void setsockopt_reuseaddr(int fd); /* On Linux this never fails. */
440 int setsockopt_broadcast(int fd);
441 /* NB: returns port in host byte order */
442 unsigned bb_lookup_port(const char *port, const char *protocol, unsigned default_port);
443 typedef struct len_and_sockaddr {
447 struct sockaddr_in sin;
448 #if ENABLE_FEATURE_IPV6
449 struct sockaddr_in6 sin6;
454 LSA_LEN_SIZE = offsetof(len_and_sockaddr, u),
455 LSA_SIZEOF_SA = sizeof(
458 struct sockaddr_in sin;
459 #if ENABLE_FEATURE_IPV6
460 struct sockaddr_in6 sin6;
465 /* Create stream socket, and allocate suitable lsa.
466 * (lsa of correct size and lsa->sa.sa_family (AF_INET/AF_INET6))
467 * af == AF_UNSPEC will result in trying to create IPv6 socket,
468 * and if kernel doesn't support it, IPv4.
470 #if ENABLE_FEATURE_IPV6
471 int xsocket_type(len_and_sockaddr **lsap, int af, int sock_type);
473 int xsocket_type(len_and_sockaddr **lsap, int sock_type);
474 #define xsocket_type(lsap, af, sock_type) xsocket_type((lsap), (sock_type))
476 int xsocket_stream(len_and_sockaddr **lsap);
477 /* Create server socket bound to bindaddr:port. bindaddr can be NULL,
478 * numeric IP ("N.N.N.N") or numeric IPv6 address,
479 * and can have ":PORT" suffix (for IPv6 use "[X:X:...:X]:PORT").
480 * Only if there is no suffix, port argument is used */
481 /* NB: these set SO_REUSEADDR before bind */
482 int create_and_bind_stream_or_die(const char *bindaddr, int port);
483 int create_and_bind_dgram_or_die(const char *bindaddr, int port);
484 /* Create client TCP socket connected to peer:port. Peer cannot be NULL.
485 * Peer can be numeric IP ("N.N.N.N"), numeric IPv6 address or hostname,
486 * and can have ":PORT" suffix (for IPv6 use "[X:X:...:X]:PORT").
487 * If there is no suffix, port argument is used */
488 int create_and_connect_stream_or_die(const char *peer, int port);
489 /* Connect to peer identified by lsa */
490 int xconnect_stream(const len_and_sockaddr *lsa);
491 /* Return malloc'ed len_and_sockaddr with socket address of host:port
492 * Currently will return IPv4 or IPv6 sockaddrs only
493 * (depending on host), but in theory nothing prevents e.g.
494 * UNIX socket address being returned, IPX sockaddr etc...
495 * On error does bb_error_msg and returns NULL */
496 len_and_sockaddr* host2sockaddr(const char *host, int port);
497 /* Version which dies on error */
498 len_and_sockaddr* xhost2sockaddr(const char *host, int port);
499 len_and_sockaddr* xdotted2sockaddr(const char *host, int port);
500 /* Same, useful if you want to force family (e.g. IPv6) */
501 #if !ENABLE_FEATURE_IPV6
502 #define host_and_af2sockaddr(host, port, af) host2sockaddr((host), (port))
503 #define xhost_and_af2sockaddr(host, port, af) xhost2sockaddr((host), (port))
505 len_and_sockaddr* host_and_af2sockaddr(const char *host, int port, sa_family_t af);
506 len_and_sockaddr* xhost_and_af2sockaddr(const char *host, int port, sa_family_t af);
508 /* Assign sin[6]_port member if the socket is an AF_INET[6] one,
509 * otherwise no-op. Useful for ftp.
510 * NB: does NOT do htons() internally, just direct assignment. */
511 void set_nport(len_and_sockaddr *lsa, unsigned port);
512 /* Retrieve sin[6]_port or return -1 for non-INET[6] lsa's */
513 int get_nport(const struct sockaddr *sa);
514 /* Reverse DNS. Returns NULL on failure. */
515 char* xmalloc_sockaddr2host(const struct sockaddr *sa);
516 /* This one doesn't append :PORTNUM */
517 char* xmalloc_sockaddr2host_noport(const struct sockaddr *sa);
518 /* This one also doesn't fall back to dotted IP (returns NULL) */
519 char* xmalloc_sockaddr2hostonly_noport(const struct sockaddr *sa);
520 /* inet_[ap]ton on steroids */
521 char* xmalloc_sockaddr2dotted(const struct sockaddr *sa);
522 char* xmalloc_sockaddr2dotted_noport(const struct sockaddr *sa);
523 // "old" (ipv4 only) API
524 // users: traceroute.c hostname.c - use _list_ of all IPs
525 struct hostent *xgethostbyname(const char *name);
526 // Also mount.c and inetd.c are using gethostbyname(),
527 // + inet_common.c has additional IPv4-only stuff
530 void socket_want_pktinfo(int fd);
531 ssize_t send_to_from(int fd, void *buf, size_t len, int flags,
532 const struct sockaddr *to,
533 const struct sockaddr *from,
535 ssize_t recv_from_to(int fd, void *buf, size_t len, int flags,
536 struct sockaddr *from,
540 char *xstrdup(const char *s);
541 char *xstrndup(const char *s, int n);
542 char *safe_strncpy(char *dst, const char *src, size_t size);
543 /* Guaranteed to NOT be a macro (smallest code). Saves nearly 2k on uclibc.
544 * But potentially slow, don't use in one-billion-times loops */
545 int bb_putchar(int ch);
546 char *xasprintf(const char *format, ...) __attribute__ ((format (printf, 1, 2)));
547 /* Prints unprintable chars ch as ^C or M-c to file
548 * (M-c is used only if ch is ORed with PRINTABLE_META),
549 * else it is printed as-is (except for ch = 0x9b) */
550 enum { PRINTABLE_META = 0x100 };
551 void fputc_printable(int ch, FILE *file);
552 // gcc-4.1.1 still isn't good enough at optimizing it
553 // (+200 bytes compared to macro)
554 //static ALWAYS_INLINE
555 //int LONE_DASH(const char *s) { return s[0] == '-' && !s[1]; }
556 //static ALWAYS_INLINE
557 //int NOT_LONE_DASH(const char *s) { return s[0] != '-' || s[1]; }
558 #define LONE_DASH(s) ((s)[0] == '-' && !(s)[1])
559 #define NOT_LONE_DASH(s) ((s)[0] != '-' || (s)[1])
560 #define LONE_CHAR(s,c) ((s)[0] == (c) && !(s)[1])
561 #define NOT_LONE_CHAR(s,c) ((s)[0] != (c) || (s)[1])
562 #define DOT_OR_DOTDOT(s) ((s)[0] == '.' && (!(s)[1] || ((s)[1] == '.' && !(s)[2])))
564 /* dmalloc will redefine these to it's own implementation. It is safe
565 * to have the prototypes here unconditionally. */
566 extern void *malloc_or_warn(size_t size);
567 extern void *xmalloc(size_t size);
568 extern void *xzalloc(size_t size);
569 extern void *xrealloc(void *old, size_t size);
571 extern ssize_t safe_read(int fd, void *buf, size_t count);
572 extern ssize_t nonblock_safe_read(int fd, void *buf, size_t count);
573 // NB: will return short read on error, not -1,
574 // if some data was read before error occurred
575 extern ssize_t full_read(int fd, void *buf, size_t count);
576 extern void xread(int fd, void *buf, size_t count);
577 extern unsigned char xread_char(int fd);
578 // Reads one line a-la fgets (but doesn't save terminating '\n').
579 // Uses single full_read() call, works only on seekable streams.
580 extern char *reads(int fd, char *buf, size_t count);
581 // Reads one line a-la fgets (but doesn't save terminating '\n').
582 // Reads byte-by-byte. Useful when it is important to not read ahead.
583 // Bytes are appended to pfx (which must be malloced, or NULL).
584 extern char *xmalloc_reads(int fd, char *pfx, size_t *maxsz_p);
585 extern ssize_t read_close(int fd, void *buf, size_t maxsz);
586 extern ssize_t open_read_close(const char *filename, void *buf, size_t maxsz);
587 /* Returns NULL if file can't be opened */
588 extern void *xmalloc_open_read_close(const char *filename, size_t *maxsz_p);
589 /* Never returns NULL */
590 extern void *xmalloc_xopen_read_close(const char *filename, size_t *maxsz_p);
592 extern ssize_t safe_write(int fd, const void *buf, size_t count);
593 // NB: will return short write on error, not -1,
594 // if some data was written before error occurred
595 extern ssize_t full_write(int fd, const void *buf, size_t count);
596 extern void xwrite(int fd, const void *buf, size_t count);
597 extern void xopen_xwrite_close(const char* file, const char *str);
599 /* Reads and prints to stdout till eof, then closes FILE. Exits on error: */
600 extern void xprint_and_close_file(FILE *file);
601 /* Reads up to (and including) TERMINATING_STRING: */
602 extern char *xmalloc_fgets_str(FILE *file, const char *terminating_string);
603 /* Chops off TERMINATING_STRING from the end: */
604 extern char *xmalloc_fgetline_str(FILE *file, const char *terminating_string);
605 /* Reads up to (and including) "\n" or NUL byte: */
606 extern char *xmalloc_fgets(FILE *file);
607 /* Chops off '\n' from the end, unlike fgets: */
608 extern char *xmalloc_fgetline(FILE *file);
609 extern char *bb_get_chunk_from_file(FILE *file, int *end);
610 extern void die_if_ferror(FILE *file, const char *msg);
611 extern void die_if_ferror_stdout(void);
612 extern void xfflush_stdout(void);
613 extern void fflush_stdout_and_exit(int retval) ATTRIBUTE_NORETURN;
614 extern int fclose_if_not_stdin(FILE *file);
615 extern FILE *xfopen(const char *filename, const char *mode);
616 /* Prints warning to stderr and returns NULL on failure: */
617 extern FILE *fopen_or_warn(const char *filename, const char *mode);
618 /* "Opens" stdin if filename is special, else just opens file: */
619 extern FILE *xfopen_stdin(const char *filename);
620 extern FILE *fopen_or_warn_stdin(const char *filename);
622 int bb_pstrcmp(const void *a, const void *b);
623 void qsort_string_vector(char **sv, unsigned count);
625 /* Wrapper which restarts poll on EINTR or ENOMEM.
626 * On other errors complains [perror("poll")] and returns.
627 * Warning! May take (much) longer than timeout_ms to return!
628 * If this is a problem, use bare poll and open-code EINTR/ENOMEM handling */
629 int safe_poll(struct pollfd *ufds, nfds_t nfds, int timeout_ms);
631 char *safe_gethostname(void);
633 /* Convert each alpha char in str to lower-case */
634 char* str_tolower(char *str);
636 char *utoa(unsigned n);
638 /* Returns a pointer past the formatted number, does NOT null-terminate */
639 char *utoa_to_buf(unsigned n, char *buf, unsigned buflen);
640 char *itoa_to_buf(int n, char *buf, unsigned buflen);
641 /* Intelligent formatters of bignums */
642 void smart_ulltoa4(unsigned long long ul, char buf[5], const char *scale);
643 void smart_ulltoa5(unsigned long long ul, char buf[5], const char *scale);
644 //TODO: provide pointer to buf (avoid statics)?
645 const char *make_human_readable_str(unsigned long long size,
646 unsigned long block_size, unsigned long display_unit);
647 /* Put a string of hex bytes ("1b2e66fe"...), return advanced pointer */
648 char *bin2hex(char *buf, const char *cp, int count);
650 /* Last element is marked by mult == 0 */
657 /* Using xatoi() instead of naive atoi() is not always convenient -
658 * in many places people want *non-negative* values, but store them
659 * in signed int. Therefore we need this one:
660 * dies if input is not in [0, INT_MAX] range. Also will reject '-0' etc */
661 int xatoi_u(const char *numstr);
662 /* Useful for reading port numbers */
663 uint16_t xatou16(const char *numstr);
666 /* These parse entries in /etc/passwd and /etc/group. This is desirable
667 * for BusyBox since we want to avoid using the glibc NSS stuff, which
668 * increases target size and is often not needed on embedded systems. */
669 long xuname2uid(const char *name);
670 long xgroup2gid(const char *name);
671 /* wrapper: allows string to contain numeric uid or gid */
672 unsigned long get_ug_id(const char *s, long (*xname2id)(const char *));
673 /* from chpst. Does not die, returns 0 on failure */
678 /* always sets uid and gid */
679 int get_uidgid(struct bb_uidgid_t*, const char*, int numeric_ok);
680 /* chown-like handling of "user[:[group]" */
681 void parse_chown_usergroup_or_die(struct bb_uidgid_t *u, char *user_group);
682 /* bb_getpwuid, bb_getgrgid:
683 * bb_getXXXid(buf, bufsz, id) - copy user/group name or id
684 * as a string to buf, return user/group name or NULL
685 * bb_getXXXid(NULL, 0, id) - return user/group name or NULL
686 * bb_getXXXid(NULL, -1, id) - return user/group name or exit
688 char *bb_getpwuid(char *name, int bufsize, long uid);
689 char *bb_getgrgid(char *group, int bufsize, long gid);
690 /* versions which cache results (useful for ps, ls etc) */
691 const char* get_cached_username(uid_t uid);
692 const char* get_cached_groupname(gid_t gid);
693 void clear_username_cache(void);
694 /* internally usernames are saved in fixed-sized char[] buffers */
695 enum { USERNAME_MAX_SIZE = 16 - sizeof(int) };
696 #if ENABLE_FEATURE_CHECK_NAMES
697 void die_if_bad_username(const char* name);
699 #define die_if_bad_username(name) ((void)(name))
702 int execable_file(const char *name);
703 char *find_execable(const char *filename, char **PATHp);
704 int exists_execable(const char *filename);
706 /* BB_EXECxx always execs (it's not doing NOFORK/NOEXEC stuff),
707 * but it may exec busybox and call applet instead of searching PATH.
709 #if ENABLE_FEATURE_PREFER_APPLETS
710 int bb_execvp(const char *file, char *const argv[]);
711 #define BB_EXECVP(prog,cmd) bb_execvp(prog,cmd)
712 #define BB_EXECLP(prog,cmd,...) \
713 execlp((find_applet_by_name(prog) >= 0) ? CONFIG_BUSYBOX_EXEC_PATH : prog, \
716 #define BB_EXECVP(prog,cmd) execvp(prog,cmd)
717 #define BB_EXECLP(prog,cmd,...) execlp(prog,cmd, __VA_ARGS__)
720 /* NOMMU friendy fork+exec */
721 pid_t spawn(char **argv);
722 pid_t xspawn(char **argv);
724 int safe_waitpid(int pid, int *wstat, int options);
725 /* Unlike waitpid, waits ONLY for one process.
726 * It's safe to pass negative 'pids' from failed [v]fork -
727 * wait4pid will return -1 (and will not clobber [v]fork's errno).
728 * IOW: rc = wait4pid(spawn(argv));
729 * if (rc < 0) bb_perror_msg("%s", argv[0]);
730 * if (rc > 0) bb_error_msg("exit code: %d", rc);
732 int wait4pid(int pid);
733 int wait_any_nohang(int *wstat);
734 #define wait_crashed(w) ((w) & 127)
735 #define wait_exitcode(w) ((w) >> 8)
736 #define wait_stopsig(w) ((w) >> 8)
737 #define wait_stopped(w) (((w) & 127) == 127)
738 /* wait4pid(spawn(argv)) + NOFORK/NOEXEC (if configured) */
739 int spawn_and_wait(char **argv);
740 struct nofork_save_area {
742 const char *applet_name;
743 int xfunc_error_retval;
744 uint32_t option_mask32;
748 void save_nofork_data(struct nofork_save_area *save);
749 void restore_nofork_data(struct nofork_save_area *save);
750 /* Does NOT check that applet is NOFORK, just blindly runs it */
751 int run_nofork_applet(int applet_no, char **argv);
752 int run_nofork_applet_prime(struct nofork_save_area *old, int applet_no, char **argv);
754 /* Helpers for daemonization.
756 * bb_daemonize(flags) = daemonize, does not compile on NOMMU
758 * bb_daemonize_or_rexec(flags, argv) = daemonizes on MMU (and ignores argv),
759 * rexec's itself on NOMMU with argv passed as command line.
760 * Thus bb_daemonize_or_rexec may cause your <applet>_main() to be re-executed
761 * from the start. (It will detect it and not reexec again second time).
762 * You have to audit carefully that you don't do something twice as a result
763 * (opening files/sockets, parsing config files etc...)!
765 * Both of the above will redirect fd 0,1,2 to /dev/null and drop ctty
766 * (will do setsid()).
768 * forkexit_or_rexec(argv) = bare-bones "fork + parent exits" on MMU,
769 * "vfork + re-exec ourself" on NOMMU. No fd redirection, no setsid().
770 * Currently used for openvt and setsid. On MMU ignores argv.
772 * Helper for network daemons in foreground mode:
774 * bb_sanitize_stdio() = make sure that fd 0,1,2 are opened by opening them
775 * to /dev/null if they are not.
778 DAEMON_CHDIR_ROOT = 1,
779 DAEMON_DEVNULL_STDIO = 2,
780 DAEMON_CLOSE_EXTRA_FDS = 4,
781 DAEMON_ONLY_SANITIZE = 8, /* internal use */
784 void forkexit_or_rexec(void);
785 enum { re_execed = 0 };
786 # define forkexit_or_rexec(argv) forkexit_or_rexec()
787 # define bb_daemonize_or_rexec(flags, argv) bb_daemonize_or_rexec(flags)
788 # define bb_daemonize(flags) bb_daemonize_or_rexec(flags, bogus)
790 void re_exec(char **argv) ATTRIBUTE_NORETURN;
791 void forkexit_or_rexec(char **argv);
792 extern bool re_execed;
793 int BUG_fork_is_unavailable_on_nommu(void);
794 int BUG_daemon_is_unavailable_on_nommu(void);
795 void BUG_bb_daemonize_is_unavailable_on_nommu(void);
796 # define fork() BUG_fork_is_unavailable_on_nommu()
797 # define daemon(a,b) BUG_daemon_is_unavailable_on_nommu()
798 # define bb_daemonize(a) BUG_bb_daemonize_is_unavailable_on_nommu()
800 void bb_daemonize_or_rexec(int flags, char **argv);
801 void bb_sanitize_stdio(void);
802 /* Clear dangerous stuff, set PATH. Return 1 if was run by different user. */
803 int sanitize_env_if_suid(void);
806 extern const char *const bb_argv_dash[]; /* "-", NULL */
807 extern const char *opt_complementary;
808 #if ENABLE_GETOPT_LONG
809 #define No_argument "\0"
810 #define Required_argument "\001"
811 #define Optional_argument "\002"
812 extern const char *applet_long_options;
814 extern uint32_t option_mask32;
815 extern uint32_t getopt32(char **argv, const char *applet_opts, ...);
818 typedef struct llist_t {
820 struct llist_t *link;
822 void llist_add_to(llist_t **old_head, void *data);
823 void llist_add_to_end(llist_t **list_head, void *data);
824 void *llist_pop(llist_t **elm);
825 void llist_unlink(llist_t **head, llist_t *elm);
826 void llist_free(llist_t *elm, void (*freeit)(void *data));
827 llist_t *llist_rev(llist_t *list);
828 /* BTW, surprisingly, changing API to
829 * llist_t *llist_add_to(llist_t *old_head, void *data)
830 * etc does not result in smaller code... */
832 /* start_stop_daemon and udhcpc are special - they want
833 * to create pidfiles regardless of FEATURE_PIDFILE */
834 #if ENABLE_FEATURE_PIDFILE || defined(WANT_PIDFILE)
835 /* True only if we created pidfile which is *file*, not /dev/null etc */
836 extern smallint wrote_pidfile;
837 void write_pidfile(const char *path);
838 #define remove_pidfile(path) do { if (wrote_pidfile) unlink(path); } while (0)
840 enum { wrote_pidfile = 0 };
841 #define write_pidfile(path) ((void)0)
842 #define remove_pidfile(path) ((void)0)
847 LOGMODE_STDIO = (1 << 0),
848 LOGMODE_SYSLOG = (1 << 1) * ENABLE_FEATURE_SYSLOG,
849 LOGMODE_BOTH = LOGMODE_SYSLOG + LOGMODE_STDIO,
851 extern const char *msg_eol;
852 extern smallint logmode;
853 extern int die_sleep;
854 extern int xfunc_error_retval;
855 extern jmp_buf die_jmp;
856 extern void xfunc_die(void) ATTRIBUTE_NORETURN;
857 extern void bb_show_usage(void) ATTRIBUTE_NORETURN;
858 extern void bb_error_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2)));
859 extern void bb_error_msg_and_die(const char *s, ...) __attribute__ ((noreturn, format (printf, 1, 2)));
860 extern void bb_perror_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2)));
861 extern void bb_simple_perror_msg(const char *s);
862 extern void bb_perror_msg_and_die(const char *s, ...) __attribute__ ((noreturn, format (printf, 1, 2)));
863 extern void bb_simple_perror_msg_and_die(const char *s) __attribute__ ((noreturn));
864 extern void bb_herror_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2)));
865 extern void bb_herror_msg_and_die(const char *s, ...) __attribute__ ((noreturn, format (printf, 1, 2)));
866 extern void bb_perror_nomsg_and_die(void) ATTRIBUTE_NORETURN;
867 extern void bb_perror_nomsg(void);
868 extern void bb_info_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2)));
869 extern void bb_verror_msg(const char *s, va_list p, const char *strerr);
871 /* We need to export XXX_main from libbusybox
872 * only if we build "individual" binaries
874 #if ENABLE_FEATURE_INDIVIDUAL
875 #define MAIN_EXTERNALLY_VISIBLE EXTERNALLY_VISIBLE
877 #define MAIN_EXTERNALLY_VISIBLE
881 /* Applets which are useful from another applets */
882 int bb_cat(char** argv);
883 /* If shell needs them, they exist even if not enabled as applets */
884 int echo_main(int argc, char** argv) USE_ECHO(MAIN_EXTERNALLY_VISIBLE);
885 int printf_main(int argc, char **argv) USE_PRINTF(MAIN_EXTERNALLY_VISIBLE);
886 int test_main(int argc, char **argv) USE_TEST(MAIN_EXTERNALLY_VISIBLE);
887 int kill_main(int argc, char **argv) USE_KILL(MAIN_EXTERNALLY_VISIBLE);
888 /* Similar, but used by chgrp, not shell */
889 int chown_main(int argc, char **argv) USE_CHOWN(MAIN_EXTERNALLY_VISIBLE);
890 /* Don't need USE_xxx() guard for these */
891 int gunzip_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
892 int bunzip2_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
893 int bbunpack(char **argv,
894 char* (*make_new_name)(char *filename),
895 USE_DESKTOP(long long) int (*unpacker)(void)
898 void bb_displayroutes(int noresolve, int netstatfmt);
903 int create_icmp_socket(void);
904 int create_icmp6_socket(void);
906 /* This structure defines protocol families and their handlers. */
912 char *(*print) (unsigned char *);
913 const char *(*sprint) (struct sockaddr *, int numeric);
914 int (*input) (/*int type,*/ const char *bufp, struct sockaddr *);
915 void (*herror) (char *text);
916 int (*rprint) (int options);
917 int (*rinput) (int typ, int ext, char **argv);
920 int (*getmask) (char *src, struct sockaddr * mask, char *name);
922 /* This structure defines hardware protocols and their handlers. */
928 char *(*print) (unsigned char *);
929 int (*input) (const char *, struct sockaddr *);
930 int (*activate) (int fd);
931 int suppress_null_addr;
933 extern smallint interface_opt_a;
934 int display_interfaces(char *ifname);
935 #if ENABLE_FEATURE_HWIB
936 int in_ib(const char *bufp, struct sockaddr *sap);
938 #define in_ib(a, b) 1 /* fail */
940 const struct aftype *get_aftype(const char *name);
941 const struct hwtype *get_hwtype(const char *name);
942 const struct hwtype *get_hwntype(int type);
945 #ifndef BUILD_INDIVIDUAL
946 extern int find_applet_by_name(const char *name);
947 /* Returns only if applet is not found. */
948 extern void run_applet_and_exit(const char *name, char **argv);
949 extern void run_applet_no_and_exit(int a, char **argv) ATTRIBUTE_NORETURN;
953 extern int match_fstype(const struct mntent *mt, const char *fstypes);
954 extern struct mntent *find_mount_point(const char *name, const char *table);
956 extern void erase_mtab(const char * name);
957 extern unsigned int tty_baud_to_value(speed_t speed);
958 extern speed_t tty_value_to_baud(unsigned int value);
959 extern void bb_warn_ignoring_args(int n);
961 extern int get_linux_version_code(void);
963 extern char *query_loop(const char *device);
964 extern int del_loop(const char *device);
965 /* If *devname is not NULL, use that name, otherwise try to find free one,
966 * malloc and return it in *devname.
967 * return value: 1: read-only loopdev was setup, 0: rw, < 0: error */
968 extern int set_loop(char **devname, const char *file, unsigned long long offset);
971 //TODO: pass buf pointer or return allocated buf (avoid statics)?
972 char *bb_askpass(int timeout, const char * prompt);
973 int bb_ask_confirmation(void);
975 extern int bb_parse_mode(const char* s, mode_t* theMode);
977 /* Concatenate path and filename to new allocated buffer.
978 * Add "/" only as needed (no duplicate "//" are produced).
979 * If path is NULL, it is assumed to be "/".
980 * filename should not be NULL. */
981 char *concat_path_file(const char *path, const char *filename);
982 char *concat_subpath_file(const char *path, const char *filename);
983 const char *bb_basename(const char *name);
984 /* NB: can violate const-ness (similarly to strchr) */
985 char *last_char_is(const char *s, int c);
988 USE_DESKTOP(long long) int uncompress(int fd_in, int fd_out);
989 int inflate(int in, int out);
992 int bb_make_directory(char *path, long mode, int flags);
994 int get_signum(const char *name);
995 const char *get_signame(int number);
996 void print_signames(void);
998 char *bb_simplify_path(const char *path);
1000 #define FAIL_DELAY 3
1001 extern void bb_do_delay(int seconds);
1002 extern void change_identity(const struct passwd *pw);
1003 extern void run_shell(const char *shell, int loginshell, const char *command, const char **additional_args) ATTRIBUTE_NORETURN;
1004 extern void run_shell(const char *shell, int loginshell, const char *command, const char **additional_args);
1006 extern void renew_current_security_context(void);
1007 extern void set_current_security_context(security_context_t sid);
1008 extern context_t set_security_context_component(security_context_t cur_context,
1009 char *user, char *role, char *type, char *range);
1010 extern void setfscreatecon_or_die(security_context_t scontext);
1011 extern void selinux_preserve_fcontext(int fdesc);
1013 #define selinux_preserve_fcontext(fdesc) ((void)0)
1015 extern void selinux_or_die(void);
1016 extern int restricted_shell(const char *shell);
1018 /* setup_environment:
1019 * if clear_env = 1: cd(pw->pw_dir), clear environment, then set
1021 * USER=pw->pw_name, LOGNAME=pw->pw_name
1022 * PATH=bb_default_[root_]path
1025 * else if change_env = 1:
1026 * if not root (if pw->pw_uid != 0):
1027 * USER=pw->pw_name, LOGNAME=pw->pw_name
1032 extern void setup_environment(const char *shell, int clear_env, int change_env, const struct passwd *pw);
1033 extern int correct_password(const struct passwd *pw);
1034 /* Returns a ptr to static storage */
1035 extern char *pw_encrypt(const char *clear, const char *salt);
1036 extern int obscure(const char *old, const char *newval, const struct passwd *pwdp);
1038 int index_in_str_array(const char *const string_array[], const char *key);
1039 int index_in_strings(const char *strings, const char *key);
1040 int index_in_substr_array(const char *const string_array[], const char *key);
1041 int index_in_substrings(const char *strings, const char *key);
1042 const char *nth_string(const char *strings, int n);
1044 extern void print_login_issue(const char *issue_file, const char *tty);
1045 extern void print_login_prompt(void);
1047 /* rnd is additional random input. New one is returned.
1048 * Useful if you call crypt_make_salt many times in a row:
1049 * rnd = crypt_make_salt(buf1, 4, 0);
1050 * rnd = crypt_make_salt(buf2, 4, rnd);
1051 * rnd = crypt_make_salt(buf3, 4, rnd);
1052 * (otherwise we risk having same salt generated)
1054 extern int crypt_make_salt(char *p, int cnt, int rnd);
1056 /* Returns number of lines changed, or -1 on error */
1057 extern int update_passwd(const char *filename, const char *username,
1058 const char *new_pw);
1060 /* NB: typically you want to pass fd 0, not 1. Think 'applet | grep something' */
1061 int get_terminal_width_height(int fd, unsigned *width, unsigned *height);
1063 /* NB: "unsigned request" is crucial! "int request" will break some arches! */
1064 int ioctl_or_perror(int fd, unsigned request, void *argp, const char *fmt,...) __attribute__ ((format (printf, 4, 5)));
1065 int ioctl_or_perror_and_die(int fd, unsigned request, void *argp, const char *fmt,...) __attribute__ ((format (printf, 4, 5)));
1066 #if ENABLE_IOCTL_HEX2STR_ERROR
1067 int bb_ioctl_or_warn(int fd, unsigned request, void *argp, const char *ioctl_name);
1068 int bb_xioctl(int fd, unsigned request, void *argp, const char *ioctl_name);
1069 #define ioctl_or_warn(fd,request,argp) bb_ioctl_or_warn(fd,request,argp,#request)
1070 #define xioctl(fd,request,argp) bb_xioctl(fd,request,argp,#request)
1072 int bb_ioctl_or_warn(int fd, unsigned request, void *argp);
1073 int bb_xioctl(int fd, unsigned request, void *argp);
1074 #define ioctl_or_warn(fd,request,argp) bb_ioctl_or_warn(fd,request,argp)
1075 #define xioctl(fd,request,argp) bb_xioctl(fd,request,argp)
1078 char *is_in_ino_dev_hashtable(const struct stat *statbuf);
1079 void add_to_ino_dev_hashtable(const struct stat *statbuf, const char *name);
1080 void reset_ino_dev_hashtable(void);
1082 /* At least glibc has horrendously large inline for this, so wrap it */
1083 unsigned long long bb_makedev(unsigned int major, unsigned int minor);
1085 #define makedev(a,b) bb_makedev(a,b)
1089 #if ENABLE_FEATURE_EDITING
1090 /* It's NOT just ENABLEd or disabled. It's a number: */
1091 #ifdef CONFIG_FEATURE_EDITING_HISTORY
1092 #define MAX_HISTORY (CONFIG_FEATURE_EDITING_HISTORY + 0)
1094 #define MAX_HISTORY 0
1096 typedef struct line_input_t {
1098 const char *path_lookup;
1102 USE_FEATURE_EDITING_SAVEHISTORY(const char *hist_file;)
1103 char *history[MAX_HISTORY + 1];
1107 DO_HISTORY = 1 * (MAX_HISTORY > 0),
1108 SAVE_HISTORY = 2 * (MAX_HISTORY > 0) * ENABLE_FEATURE_EDITING_SAVEHISTORY,
1109 TAB_COMPLETION = 4 * ENABLE_FEATURE_TAB_COMPLETION,
1110 USERNAME_COMPLETION = 8 * ENABLE_FEATURE_USERNAME_COMPLETION,
1111 VI_MODE = 0x10 * ENABLE_FEATURE_EDITING_VI,
1112 WITH_PATH_LOOKUP = 0x20,
1113 FOR_SHELL = DO_HISTORY | SAVE_HISTORY | TAB_COMPLETION | USERNAME_COMPLETION,
1115 line_input_t *new_line_input_t(int flags);
1117 * -1 on read errors or EOF, or on bare Ctrl-D,
1118 * 0 on ctrl-C (the line entered is still returned in 'command'),
1119 * >0 length of input string, including terminating '\n'
1121 int read_line_input(const char* prompt, char* command, int maxsize, line_input_t *state);
1123 int read_line_input(const char* prompt, char* command, int maxsize);
1124 #define read_line_input(prompt, command, maxsize, state) \
1125 read_line_input(prompt, command, maxsize)
1130 #ifdef TASK_COMM_LEN
1131 enum { COMM_LEN = TASK_COMM_LEN };
1133 /* synchronize with sizeof(task_struct.comm) in /usr/include/linux/sched.h */
1134 enum { COMM_LEN = 16 };
1137 typedef struct procps_status_t {
1139 uint8_t shift_pages_to_bytes;
1140 uint8_t shift_pages_to_kb;
1141 /* Fields are set to 0/NULL if failed to determine (or not requested) */
1143 USE_SELINUX(char *context;)
1144 /* Everything below must contain no ptrs to malloc'ed data:
1145 * it is memset(0) for each process in procps_scan() */
1146 unsigned long vsz, rss; /* we round it to kbytes */
1147 unsigned long stime, utime;
1148 unsigned long start_time;
1155 unsigned tty_major,tty_minor;
1156 #if ENABLE_FEATURE_TOPMEM
1157 unsigned long mapped_rw;
1158 unsigned long mapped_ro;
1159 unsigned long shared_clean;
1160 unsigned long shared_dirty;
1161 unsigned long private_clean;
1162 unsigned long private_dirty;
1163 unsigned long stack;
1166 /* basename of executable in exec(2), read from /proc/N/stat
1167 * (if executable is symlink or script, it is NOT replaced
1168 * by link target or interpreter name) */
1169 char comm[COMM_LEN];
1170 /* user/group? - use passwd/group parsing functions */
1173 PSSCAN_PID = 1 << 0,
1174 PSSCAN_PPID = 1 << 1,
1175 PSSCAN_PGID = 1 << 2,
1176 PSSCAN_SID = 1 << 3,
1177 PSSCAN_UIDGID = 1 << 4,
1178 PSSCAN_COMM = 1 << 5,
1179 /* PSSCAN_CMD = 1 << 6, - use read_cmdline instead */
1180 PSSCAN_ARGV0 = 1 << 7,
1181 /* PSSCAN_EXE = 1 << 8, - not implemented */
1182 PSSCAN_STATE = 1 << 9,
1183 PSSCAN_VSZ = 1 << 10,
1184 PSSCAN_RSS = 1 << 11,
1185 PSSCAN_STIME = 1 << 12,
1186 PSSCAN_UTIME = 1 << 13,
1187 PSSCAN_TTY = 1 << 14,
1188 PSSCAN_SMAPS = (1 << 15) * ENABLE_FEATURE_TOPMEM,
1189 PSSCAN_ARGVN = (1 << 16) * (ENABLE_PGREP | ENABLE_PKILL),
1190 USE_SELINUX(PSSCAN_CONTEXT = 1 << 17,)
1191 PSSCAN_START_TIME = 1 << 18,
1192 /* These are all retrieved from proc/NN/stat in one go: */
1193 PSSCAN_STAT = PSSCAN_PPID | PSSCAN_PGID | PSSCAN_SID
1194 | PSSCAN_COMM | PSSCAN_STATE
1195 | PSSCAN_VSZ | PSSCAN_RSS
1196 | PSSCAN_STIME | PSSCAN_UTIME | PSSCAN_START_TIME
1199 //procps_status_t* alloc_procps_scan(void);
1200 void free_procps_scan(procps_status_t* sp);
1201 procps_status_t* procps_scan(procps_status_t* sp, int flags);
1202 /* Format cmdline (up to col chars) into char buf[col+1] */
1203 /* Puts [comm] if cmdline is empty (-> process is a kernel thread) */
1204 void read_cmdline(char *buf, int col, unsigned pid, const char *comm);
1205 pid_t *find_pid_by_name(const char* procName);
1206 pid_t *pidlist_reverse(pid_t *pidList);
1209 extern const char bb_uuenc_tbl_base64[];
1210 extern const char bb_uuenc_tbl_std[];
1211 void bb_uuencode(char *store, const void *s, int length, const char *tbl);
1213 typedef struct sha1_ctx_t {
1218 void sha1_begin(sha1_ctx_t *ctx);
1219 void sha1_hash(const void *data, size_t length, sha1_ctx_t *ctx);
1220 void *sha1_end(void *resbuf, sha1_ctx_t *ctx);
1222 typedef struct md5_ctx_t {
1231 void md5_begin(md5_ctx_t *ctx);
1232 void md5_hash(const void *data, size_t length, md5_ctx_t *ctx);
1233 void *md5_end(void *resbuf, md5_ctx_t *ctx);
1235 uint32_t *crc32_filltable(uint32_t *tbl256, int endian);
1238 extern const char *applet_name;
1239 /* "BusyBox vN.N.N (timestamp or extra_version)" */
1240 extern const char bb_banner[];
1241 extern const char bb_msg_memory_exhausted[];
1242 extern const char bb_msg_invalid_date[];
1243 extern const char bb_msg_read_error[];
1244 extern const char bb_msg_write_error[];
1245 extern const char bb_msg_unknown[];
1246 extern const char bb_msg_can_not_create_raw_socket[];
1247 extern const char bb_msg_perm_denied_are_you_root[];
1248 extern const char bb_msg_requires_arg[];
1249 extern const char bb_msg_invalid_arg[];
1250 extern const char bb_msg_standard_input[];
1251 extern const char bb_msg_standard_output[];
1253 extern const char bb_str_default[];
1254 /* NB: (bb_hexdigits_upcase[i] | 0x20) -> lowercase hex digit */
1255 extern const char bb_hexdigits_upcase[];
1257 extern const char bb_path_mtab_file[];
1258 extern const char bb_path_passwd_file[];
1259 extern const char bb_path_shadow_file[];
1260 extern const char bb_path_gshadow_file[];
1261 extern const char bb_path_group_file[];
1262 extern const char bb_path_motd_file[];
1263 extern const char bb_path_wtmp_file[];
1264 extern const char bb_dev_null[];
1265 extern const char bb_busybox_exec_path[];
1266 /* util-linux manpage says /sbin:/bin:/usr/sbin:/usr/bin,
1267 * but I want to save a few bytes here */
1268 extern const char bb_PATH_root_path[]; /* "PATH=/sbin:/usr/sbin:/bin:/usr/bin" */
1269 #define bb_default_root_path (bb_PATH_root_path + sizeof("PATH"))
1270 #define bb_default_path (bb_PATH_root_path + sizeof("PATH=/sbin:/usr/sbin"))
1272 extern const int const_int_0;
1273 extern const int const_int_1;
1279 /* Providing hard guarantee on minimum size (think of BUFSIZ == 128) */
1280 enum { COMMON_BUFSIZE = (BUFSIZ >= 256*sizeof(void*) ? BUFSIZ+1 : 256*sizeof(void*)) };
1281 extern char bb_common_bufsiz1[COMMON_BUFSIZE];
1282 /* This struct is deliberately not defined. */
1283 /* See docs/keep_data_small.txt */
1285 /* '*const' ptr makes gcc optimize code much better.
1286 * Magic prevents ptr_to_globals from going into rodata.
1287 * If you want to assign a value, use SET_PTR_TO_GLOBALS(x) */
1288 extern struct globals *const ptr_to_globals;
1289 /* At least gcc 3.4.6 on mipsel system needs optimization barrier */
1290 #define barrier() __asm__ __volatile__("":::"memory")
1291 #define SET_PTR_TO_GLOBALS(x) do { \
1292 (*(struct globals**)&ptr_to_globals) = (x); \
1296 /* You can change LIBBB_DEFAULT_LOGIN_SHELL, but don't use it,
1297 * use bb_default_login_shell and following defines.
1298 * If you change LIBBB_DEFAULT_LOGIN_SHELL,
1299 * don't forget to change increment constant. */
1300 #define LIBBB_DEFAULT_LOGIN_SHELL "-/bin/sh"
1301 extern const char bb_default_login_shell[];
1303 #define DEFAULT_SHELL (bb_default_login_shell+1)
1305 #define DEFAULT_SHELL_SHORT_NAME (bb_default_login_shell+6)
1308 #if ENABLE_FEATURE_DEVFS
1309 # define CURRENT_VC "/dev/vc/0"
1310 # define VC_1 "/dev/vc/1"
1311 # define VC_2 "/dev/vc/2"
1312 # define VC_3 "/dev/vc/3"
1313 # define VC_4 "/dev/vc/4"
1314 # define VC_5 "/dev/vc/5"
1315 #if defined(__sh__) || defined(__H8300H__) || defined(__H8300S__)
1316 /* Yes, this sucks, but both SH (including sh64) and H8 have a SCI(F) for their
1317 respective serial ports .. as such, we can't use the common device paths for
1319 # define SC_0 "/dev/ttsc/0"
1320 # define SC_1 "/dev/ttsc/1"
1321 # define SC_FORMAT "/dev/ttsc/%d"
1323 # define SC_0 "/dev/tts/0"
1324 # define SC_1 "/dev/tts/1"
1325 # define SC_FORMAT "/dev/tts/%d"
1327 # define VC_FORMAT "/dev/vc/%d"
1328 # define LOOP_FORMAT "/dev/loop/%d"
1329 # define LOOP_NAMESIZE (sizeof("/dev/loop/") + sizeof(int)*3 + 1)
1330 # define LOOP_NAME "/dev/loop/"
1331 # define FB_0 "/dev/fb/0"
1333 # define CURRENT_VC "/dev/tty0"
1334 # define VC_1 "/dev/tty1"
1335 # define VC_2 "/dev/tty2"
1336 # define VC_3 "/dev/tty3"
1337 # define VC_4 "/dev/tty4"
1338 # define VC_5 "/dev/tty5"
1339 #if defined(__sh__) || defined(__H8300H__) || defined(__H8300S__)
1340 # define SC_0 "/dev/ttySC0"
1341 # define SC_1 "/dev/ttySC1"
1342 # define SC_FORMAT "/dev/ttySC%d"
1344 # define SC_0 "/dev/ttyS0"
1345 # define SC_1 "/dev/ttyS1"
1346 # define SC_FORMAT "/dev/ttyS%d"
1348 # define VC_FORMAT "/dev/tty%d"
1349 # define LOOP_FORMAT "/dev/loop%d"
1350 # define LOOP_NAMESIZE (sizeof("/dev/loop") + sizeof(int)*3 + 1)
1351 # define LOOP_NAME "/dev/loop"
1352 # define FB_0 "/dev/fb0"
1355 /* The following devices are the same on devfs and non-devfs systems. */
1356 #define CURRENT_TTY "/dev/tty"
1357 #define DEV_CONSOLE "/dev/console"
1360 #ifndef RB_POWER_OFF
1361 /* Stop system and switch power off if possible. */
1362 #define RB_POWER_OFF 0x4321fedc
1365 /* Make sure we call functions instead of macros. */
1379 /* This one is more efficient - we save ~400 bytes */
1381 #define isdigit(a) ((unsigned)((a) - '0') <= 9)
1383 #define ARRAY_SIZE(x) ((unsigned)(sizeof(x) / sizeof((x)[0])))
1386 #if __GNUC_PREREQ(4,1)
1387 # pragma GCC visibility pop
1391 #endif /* __LIBBUSYBOX_H__ */