Contents of /trunk/mkinitrd-magellan/busybox/include/libbb.h
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Fri Apr 24 18:33:46 2009 UTC (15 years, 5 months ago) by niro
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Fri Apr 24 18:33:46 2009 UTC (15 years, 5 months ago) by niro
File MIME type: text/plain
File size: 58109 byte(s)
-updated to busybox-1.13.4
1 | /* vi: set sw=4 ts=4: */ |
2 | /* |
3 | * Busybox main internal header file |
4 | * |
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. |
7 | * |
8 | * Licensed under the GPL version 2, see the file LICENSE in this tarball. |
9 | */ |
10 | #ifndef __LIBBUSYBOX_H__ |
11 | #define __LIBBUSYBOX_H__ 1 |
12 | |
13 | #include "platform.h" |
14 | |
15 | #include <ctype.h> |
16 | #include <dirent.h> |
17 | #include <errno.h> |
18 | #include <fcntl.h> |
19 | #include <inttypes.h> |
20 | #include <netdb.h> |
21 | #include <setjmp.h> |
22 | #include <signal.h> |
23 | #include <stdio.h> |
24 | #include <stdlib.h> |
25 | #include <stdarg.h> |
26 | #include <stddef.h> |
27 | #include <string.h> |
28 | #include <sys/poll.h> |
29 | #include <sys/ioctl.h> |
30 | #include <sys/mman.h> |
31 | #include <sys/socket.h> |
32 | #include <sys/stat.h> |
33 | #include <sys/time.h> |
34 | #include <sys/types.h> |
35 | #include <sys/wait.h> |
36 | #include <termios.h> |
37 | #include <time.h> |
38 | #include <unistd.h> |
39 | #include <utime.h> |
40 | /* Try to pull in PATH_MAX */ |
41 | #include <limits.h> |
42 | #include <sys/param.h> |
43 | #ifndef PATH_MAX |
44 | #define PATH_MAX 256 |
45 | #endif |
46 | |
47 | #ifdef HAVE_MNTENT_H |
48 | #include <mntent.h> |
49 | #endif |
50 | |
51 | #ifdef HAVE_SYS_STATFS_H |
52 | #include <sys/statfs.h> |
53 | #endif |
54 | |
55 | #if ENABLE_SELINUX |
56 | #include <selinux/selinux.h> |
57 | #include <selinux/context.h> |
58 | #include <selinux/flask.h> |
59 | #include <selinux/av_permissions.h> |
60 | #endif |
61 | |
62 | #if ENABLE_LOCALE_SUPPORT |
63 | #include <locale.h> |
64 | #else |
65 | #define setlocale(x,y) ((void)0) |
66 | #endif |
67 | |
68 | #ifdef DMALLOC |
69 | #include <dmalloc.h> |
70 | #endif |
71 | |
72 | #include <pwd.h> |
73 | #include <grp.h> |
74 | #if ENABLE_FEATURE_SHADOWPASSWDS |
75 | # include <shadow.h> |
76 | #endif |
77 | |
78 | /* Some libc's forget to declare these, do it ourself */ |
79 | |
80 | extern char **environ; |
81 | #if defined(__GLIBC__) && __GLIBC__ < 2 |
82 | int vdprintf(int d, const char *format, va_list ap); |
83 | #endif |
84 | /* klogctl is in libc's klog.h, but we cheat and not #include that */ |
85 | int klogctl(int type, char *b, int len); |
86 | /* This is declared here rather than #including <libgen.h> in order to avoid |
87 | * confusing the two versions of basename. See the dirname/basename man page |
88 | * for details. */ |
89 | char *dirname(char *path); |
90 | /* Include our own copy of struct sysinfo to avoid binary compatibility |
91 | * problems with Linux 2.4, which changed things. Grumble, grumble. */ |
92 | struct sysinfo { |
93 | long uptime; /* Seconds since boot */ |
94 | unsigned long loads[3]; /* 1, 5, and 15 minute load averages */ |
95 | unsigned long totalram; /* Total usable main memory size */ |
96 | unsigned long freeram; /* Available memory size */ |
97 | unsigned long sharedram; /* Amount of shared memory */ |
98 | unsigned long bufferram; /* Memory used by buffers */ |
99 | unsigned long totalswap; /* Total swap space size */ |
100 | unsigned long freeswap; /* swap space still available */ |
101 | unsigned short procs; /* Number of current processes */ |
102 | unsigned short pad; /* Padding needed for m68k */ |
103 | unsigned long totalhigh; /* Total high memory size */ |
104 | unsigned long freehigh; /* Available high memory size */ |
105 | unsigned int mem_unit; /* Memory unit size in bytes */ |
106 | char _f[20 - 2 * sizeof(long) - sizeof(int)]; /* Padding: libc5 uses this.. */ |
107 | }; |
108 | int sysinfo(struct sysinfo* info); |
109 | |
110 | |
111 | /* Make all declarations hidden (-fvisibility flag only affects definitions) */ |
112 | /* (don't include system headers after this until corresponding pop!) */ |
113 | #if __GNUC_PREREQ(4,1) |
114 | # pragma GCC visibility push(hidden) |
115 | #endif |
116 | |
117 | |
118 | #if ENABLE_USE_BB_PWD_GRP |
119 | # include "pwd_.h" |
120 | # include "grp_.h" |
121 | #endif |
122 | #if ENABLE_FEATURE_SHADOWPASSWDS |
123 | # if ENABLE_USE_BB_SHADOW |
124 | # include "shadow_.h" |
125 | # endif |
126 | #endif |
127 | |
128 | /* Tested to work correctly with all int types (IIRC :]) */ |
129 | #define MAXINT(T) (T)( \ |
130 | ((T)-1) > 0 \ |
131 | ? (T)-1 \ |
132 | : (T)~((T)1 << (sizeof(T)*8-1)) \ |
133 | ) |
134 | |
135 | #define MININT(T) (T)( \ |
136 | ((T)-1) > 0 \ |
137 | ? (T)0 \ |
138 | : ((T)1 << (sizeof(T)*8-1)) \ |
139 | ) |
140 | |
141 | /* Large file support */ |
142 | /* Note that CONFIG_LFS=y forces bbox to be built with all common ops |
143 | * (stat, lseek etc) mapped to "largefile" variants by libc. |
144 | * Practically it means that open() automatically has O_LARGEFILE added |
145 | * and all filesize/file_offset parameters and struct members are "large" |
146 | * (in today's world - signed 64bit). For full support of large files, |
147 | * we need a few helper #defines (below) and careful use of off_t |
148 | * instead of int/ssize_t. No lseek64(), O_LARGEFILE etc necessary */ |
149 | #if ENABLE_LFS |
150 | /* CONFIG_LFS is on */ |
151 | # if ULONG_MAX > 0xffffffff |
152 | /* "long" is long enough on this system */ |
153 | # define XATOOFF(a) xatoul_range(a, 0, LONG_MAX) |
154 | /* usage: sz = BB_STRTOOFF(s, NULL, 10); if (errno || sz < 0) die(); */ |
155 | # define BB_STRTOOFF bb_strtoul |
156 | # define STRTOOFF strtoul |
157 | /* usage: printf("size: %"OFF_FMT"d (%"OFF_FMT"x)\n", sz, sz); */ |
158 | # define OFF_FMT "l" |
159 | # else |
160 | /* "long" is too short, need "long long" */ |
161 | # define XATOOFF(a) xatoull_range(a, 0, LLONG_MAX) |
162 | # define BB_STRTOOFF bb_strtoull |
163 | # define STRTOOFF strtoull |
164 | # define OFF_FMT "ll" |
165 | # endif |
166 | #else |
167 | /* CONFIG_LFS is off */ |
168 | # if UINT_MAX == 0xffffffff |
169 | /* While sizeof(off_t) == sizeof(int), off_t is typedef'ed to long anyway. |
170 | * gcc will throw warnings on printf("%d", off_t). Crap... */ |
171 | # define XATOOFF(a) xatoi_u(a) |
172 | # define BB_STRTOOFF bb_strtou |
173 | # define STRTOOFF strtol |
174 | # define OFF_FMT "l" |
175 | # else |
176 | # define XATOOFF(a) xatoul_range(a, 0, LONG_MAX) |
177 | # define BB_STRTOOFF bb_strtoul |
178 | # define STRTOOFF strtol |
179 | # define OFF_FMT "l" |
180 | # endif |
181 | #endif |
182 | /* scary. better ideas? (but do *test* them first!) */ |
183 | #define OFF_T_MAX ((off_t)~((off_t)1 << (sizeof(off_t)*8-1))) |
184 | |
185 | /* Some useful definitions */ |
186 | #undef FALSE |
187 | #define FALSE ((int) 0) |
188 | #undef TRUE |
189 | #define TRUE ((int) 1) |
190 | #undef SKIP |
191 | #define SKIP ((int) 2) |
192 | |
193 | /* for mtab.c */ |
194 | #define MTAB_GETMOUNTPT '1' |
195 | #define MTAB_GETDEVICE '2' |
196 | |
197 | #define BUF_SIZE 8192 |
198 | #define EXPAND_ALLOC 1024 |
199 | |
200 | /* Macros for min/max. */ |
201 | #ifndef MIN |
202 | #define MIN(a,b) (((a)<(b))?(a):(b)) |
203 | #endif |
204 | |
205 | #ifndef MAX |
206 | #define MAX(a,b) (((a)>(b))?(a):(b)) |
207 | #endif |
208 | |
209 | /* buffer allocation schemes */ |
210 | #if ENABLE_FEATURE_BUFFERS_GO_ON_STACK |
211 | #define RESERVE_CONFIG_BUFFER(buffer,len) char buffer[len] |
212 | #define RESERVE_CONFIG_UBUFFER(buffer,len) unsigned char buffer[len] |
213 | #define RELEASE_CONFIG_BUFFER(buffer) ((void)0) |
214 | #else |
215 | #if ENABLE_FEATURE_BUFFERS_GO_IN_BSS |
216 | #define RESERVE_CONFIG_BUFFER(buffer,len) static char buffer[len] |
217 | #define RESERVE_CONFIG_UBUFFER(buffer,len) static unsigned char buffer[len] |
218 | #define RELEASE_CONFIG_BUFFER(buffer) ((void)0) |
219 | #else |
220 | #define RESERVE_CONFIG_BUFFER(buffer,len) char *buffer = xmalloc(len) |
221 | #define RESERVE_CONFIG_UBUFFER(buffer,len) unsigned char *buffer = xmalloc(len) |
222 | #define RELEASE_CONFIG_BUFFER(buffer) free(buffer) |
223 | #endif |
224 | #endif |
225 | |
226 | #if defined(__GLIBC__) |
227 | /* glibc uses __errno_location() to get a ptr to errno */ |
228 | /* We can just memorize it once - no multithreading in busybox :) */ |
229 | extern int *const bb_errno; |
230 | #undef errno |
231 | #define errno (*bb_errno) |
232 | #endif |
233 | |
234 | unsigned long long monotonic_ns(void) FAST_FUNC; |
235 | unsigned long long monotonic_us(void) FAST_FUNC; |
236 | unsigned monotonic_sec(void) FAST_FUNC; |
237 | |
238 | extern void chomp(char *s) FAST_FUNC; |
239 | extern void trim(char *s) FAST_FUNC; |
240 | extern char *skip_whitespace(const char *) FAST_FUNC; |
241 | extern char *skip_non_whitespace(const char *) FAST_FUNC; |
242 | extern char *strrstr(const char *haystack, const char *needle) FAST_FUNC; |
243 | |
244 | //TODO: supply a pointer to char[11] buffer (avoid statics)? |
245 | extern const char *bb_mode_string(mode_t mode) FAST_FUNC; |
246 | extern int is_directory(const char *name, int followLinks, struct stat *statBuf) FAST_FUNC; |
247 | enum { /* DO NOT CHANGE THESE VALUES! cp.c, mv.c, install.c depend on them. */ |
248 | FILEUTILS_PRESERVE_STATUS = 1, |
249 | FILEUTILS_DEREFERENCE = 2, |
250 | FILEUTILS_RECUR = 4, |
251 | FILEUTILS_FORCE = 8, |
252 | FILEUTILS_INTERACTIVE = 0x10, |
253 | FILEUTILS_MAKE_HARDLINK = 0x20, |
254 | FILEUTILS_MAKE_SOFTLINK = 0x40, |
255 | FILEUTILS_DEREF_SOFTLINK = 0x80, |
256 | #if ENABLE_SELINUX |
257 | FILEUTILS_PRESERVE_SECURITY_CONTEXT = 0x100, |
258 | FILEUTILS_SET_SECURITY_CONTEXT = 0x200 |
259 | #endif |
260 | }; |
261 | #define FILEUTILS_CP_OPTSTR "pdRfilsL" USE_SELINUX("c") |
262 | extern int remove_file(const char *path, int flags) FAST_FUNC; |
263 | /* NB: without FILEUTILS_RECUR in flags, it will basically "cat" |
264 | * the source, not copy (unless "source" is a directory). |
265 | * This makes "cp /dev/null file" and "install /dev/null file" (!!!) |
266 | * work coreutils-compatibly. */ |
267 | extern int copy_file(const char *source, const char *dest, int flags) FAST_FUNC; |
268 | |
269 | enum { |
270 | ACTION_RECURSE = (1 << 0), |
271 | ACTION_FOLLOWLINKS = (1 << 1), |
272 | ACTION_FOLLOWLINKS_L0 = (1 << 2), |
273 | ACTION_DEPTHFIRST = (1 << 3), |
274 | /*ACTION_REVERSE = (1 << 4), - unused */ |
275 | ACTION_QUIET = (1 << 5), |
276 | }; |
277 | extern int recursive_action(const char *fileName, unsigned flags, |
278 | int FAST_FUNC (*fileAction)(const char *fileName, struct stat* statbuf, void* userData, int depth), |
279 | int FAST_FUNC (*dirAction)(const char *fileName, struct stat* statbuf, void* userData, int depth), |
280 | void* userData, unsigned depth) FAST_FUNC; |
281 | extern int device_open(const char *device, int mode) FAST_FUNC; |
282 | enum { GETPTY_BUFSIZE = 16 }; /* more than enough for "/dev/ttyXXX" */ |
283 | extern int xgetpty(char *line) FAST_FUNC; |
284 | extern int get_console_fd_or_die(void) FAST_FUNC; |
285 | extern void console_make_active(int fd, const int vt_num) FAST_FUNC; |
286 | extern char *find_block_device(const char *path) FAST_FUNC; |
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) FAST_FUNC; |
289 | extern off_t bb_copyfd_size(int fd1, int fd2, off_t size) FAST_FUNC; |
290 | extern void bb_copyfd_exact_size(int fd1, int fd2, off_t size) FAST_FUNC; |
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) NORETURN FAST_FUNC; |
294 | extern char bb_process_escape_sequence(const char **ptr) FAST_FUNC; |
295 | /* xxxx_strip version can modify its parameter: |
296 | * "/" -> "/" |
297 | * "abc" -> "abc" |
298 | * "abc/def" -> "def" |
299 | * "abc/def/" -> "def" !! |
300 | */ |
301 | extern char *bb_get_last_path_component_strip(char *path) FAST_FUNC; |
302 | /* "abc/def/" -> "" and it never modifies 'path' */ |
303 | extern char *bb_get_last_path_component_nostrip(const char *path) FAST_FUNC; |
304 | |
305 | int ndelay_on(int fd) FAST_FUNC; |
306 | int ndelay_off(int fd) FAST_FUNC; |
307 | int close_on_exec_on(int fd) FAST_FUNC; |
308 | void xdup2(int, int) FAST_FUNC; |
309 | void xmove_fd(int, int) FAST_FUNC; |
310 | |
311 | |
312 | DIR *xopendir(const char *path) FAST_FUNC; |
313 | DIR *warn_opendir(const char *path) FAST_FUNC; |
314 | |
315 | /* UNUSED: char *xmalloc_realpath(const char *path) FAST_FUNC; */ |
316 | char *xmalloc_readlink(const char *path) FAST_FUNC; |
317 | char *xmalloc_readlink_or_warn(const char *path) FAST_FUNC; |
318 | char *xrealloc_getcwd_or_warn(char *cwd) FAST_FUNC; |
319 | |
320 | char *xmalloc_follow_symlinks(const char *path) FAST_FUNC; |
321 | |
322 | |
323 | enum { |
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 |
333 | * |
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... |
337 | */ |
338 | BB_FATAL_SIGS = (int)(0 |
339 | + (1LL << SIGHUP) |
340 | + (1LL << SIGINT) |
341 | + (1LL << SIGTERM) |
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! |
350 | + (1LL << SIGUSR2) |
351 | + 0), |
352 | }; |
353 | void bb_signals(int sigs, void (*f)(int)) FAST_FUNC; |
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)) FAST_FUNC; |
358 | /* syscalls like read() will be interrupted with EINTR: */ |
359 | void signal_no_SA_RESTART_empty_mask(int sig, void (*handler)(int)) FAST_FUNC; |
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)) FAST_FUNC; |
362 | void wait_for_any_sig(void) FAST_FUNC; |
363 | void kill_myself_with_sig(int sig) NORETURN FAST_FUNC; |
364 | void sig_block(int sig) FAST_FUNC; |
365 | void sig_unblock(int sig) FAST_FUNC; |
366 | /* Will do sigaction(signum, act, NULL): */ |
367 | int sigaction_set(int sig, const struct sigaction *act) FAST_FUNC; |
368 | /* SIG_BLOCK/SIG_UNBLOCK all signals: */ |
369 | int sigprocmask_allsigs(int how) FAST_FUNC; |
370 | /* Standard handler which just records signo */ |
371 | extern smallint bb_got_signal; |
372 | void record_signo(int signo); /* not FAST_FUNC! */ |
373 | |
374 | |
375 | void xsetgid(gid_t gid) FAST_FUNC; |
376 | void xsetuid(uid_t uid) FAST_FUNC; |
377 | void xchdir(const char *path) FAST_FUNC; |
378 | void xchroot(const char *path) FAST_FUNC; |
379 | void xsetenv(const char *key, const char *value) FAST_FUNC; |
380 | void xunlink(const char *pathname) FAST_FUNC; |
381 | void xstat(const char *pathname, struct stat *buf) FAST_FUNC; |
382 | int xopen(const char *pathname, int flags) FAST_FUNC FAST_FUNC; |
383 | int xopen3(const char *pathname, int flags, int mode) FAST_FUNC; |
384 | int open_or_warn(const char *pathname, int flags) FAST_FUNC; |
385 | int open3_or_warn(const char *pathname, int flags, int mode) FAST_FUNC; |
386 | int open_or_warn_stdin(const char *pathname) FAST_FUNC; |
387 | void xrename(const char *oldpath, const char *newpath) FAST_FUNC; |
388 | int rename_or_warn(const char *oldpath, const char *newpath) FAST_FUNC; |
389 | off_t xlseek(int fd, off_t offset, int whence) FAST_FUNC; |
390 | off_t fdlength(int fd) FAST_FUNC; |
391 | |
392 | void xpipe(int filedes[2]) FAST_FUNC; |
393 | /* In this form code with pipes is much more readable */ |
394 | struct fd_pair { int rd; int wr; }; |
395 | #define piped_pair(pair) pipe(&((pair).rd)) |
396 | #define xpiped_pair(pair) xpipe(&((pair).rd)) |
397 | |
398 | /* Useful for having small structure members/global variables */ |
399 | typedef int8_t socktype_t; |
400 | typedef int8_t family_t; |
401 | struct BUG_too_small { |
402 | char BUG_socktype_t_too_small[(0 |
403 | | SOCK_STREAM |
404 | | SOCK_DGRAM |
405 | | SOCK_RDM |
406 | | SOCK_SEQPACKET |
407 | | SOCK_RAW |
408 | ) <= 127 ? 1 : -1]; |
409 | char BUG_family_t_too_small[(0 |
410 | | AF_UNSPEC |
411 | | AF_INET |
412 | | AF_INET6 |
413 | | AF_UNIX |
414 | #ifdef AF_PACKET |
415 | | AF_PACKET |
416 | #endif |
417 | #ifdef AF_NETLINK |
418 | | AF_NETLINK |
419 | #endif |
420 | /* | AF_DECnet */ |
421 | /* | AF_IPX */ |
422 | ) <= 127 ? 1 : -1]; |
423 | }; |
424 | |
425 | |
426 | int xsocket(int domain, int type, int protocol) FAST_FUNC; |
427 | void xbind(int sockfd, struct sockaddr *my_addr, socklen_t addrlen) FAST_FUNC; |
428 | void xlisten(int s, int backlog) FAST_FUNC; |
429 | void xconnect(int s, const struct sockaddr *s_addr, socklen_t addrlen) FAST_FUNC; |
430 | ssize_t xsendto(int s, const void *buf, size_t len, const struct sockaddr *to, |
431 | socklen_t tolen) FAST_FUNC; |
432 | /* SO_REUSEADDR allows a server to rebind to an address that is already |
433 | * "in use" by old connections to e.g. previous server instance which is |
434 | * killed or crashed. Without it bind will fail until all such connections |
435 | * time out. Linux does not allow multiple live binds on same ip:port |
436 | * regardless of SO_REUSEADDR (unlike some other flavors of Unix). |
437 | * Turn it on before you call bind(). */ |
438 | void setsockopt_reuseaddr(int fd) FAST_FUNC; /* On Linux this never fails. */ |
439 | int setsockopt_broadcast(int fd) FAST_FUNC; |
440 | int setsockopt_bindtodevice(int fd, const char *iface) FAST_FUNC; |
441 | /* NB: returns port in host byte order */ |
442 | unsigned bb_lookup_port(const char *port, const char *protocol, unsigned default_port) FAST_FUNC; |
443 | typedef struct len_and_sockaddr { |
444 | socklen_t len; |
445 | union { |
446 | struct sockaddr sa; |
447 | struct sockaddr_in sin; |
448 | #if ENABLE_FEATURE_IPV6 |
449 | struct sockaddr_in6 sin6; |
450 | #endif |
451 | } u; |
452 | } len_and_sockaddr; |
453 | enum { |
454 | LSA_LEN_SIZE = offsetof(len_and_sockaddr, u), |
455 | LSA_SIZEOF_SA = sizeof( |
456 | union { |
457 | struct sockaddr sa; |
458 | struct sockaddr_in sin; |
459 | #if ENABLE_FEATURE_IPV6 |
460 | struct sockaddr_in6 sin6; |
461 | #endif |
462 | } |
463 | ) |
464 | }; |
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. |
469 | */ |
470 | #if ENABLE_FEATURE_IPV6 |
471 | int xsocket_type(len_and_sockaddr **lsap, int af, int sock_type) FAST_FUNC; |
472 | #else |
473 | int xsocket_type(len_and_sockaddr **lsap, int sock_type) FAST_FUNC; |
474 | #define xsocket_type(lsap, af, sock_type) xsocket_type((lsap), (sock_type)) |
475 | #endif |
476 | int xsocket_stream(len_and_sockaddr **lsap) FAST_FUNC; |
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) FAST_FUNC; |
483 | int create_and_bind_dgram_or_die(const char *bindaddr, int port) FAST_FUNC; |
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) FAST_FUNC; |
489 | /* Connect to peer identified by lsa */ |
490 | int xconnect_stream(const len_and_sockaddr *lsa) FAST_FUNC; |
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) FAST_FUNC; |
497 | /* Version which dies on error */ |
498 | len_and_sockaddr* xhost2sockaddr(const char *host, int port) FAST_FUNC; |
499 | len_and_sockaddr* xdotted2sockaddr(const char *host, int port) FAST_FUNC; |
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)) |
504 | #else |
505 | len_and_sockaddr* host_and_af2sockaddr(const char *host, int port, sa_family_t af) FAST_FUNC; |
506 | len_and_sockaddr* xhost_and_af2sockaddr(const char *host, int port, sa_family_t af) FAST_FUNC; |
507 | #endif |
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) FAST_FUNC; |
512 | /* Retrieve sin[6]_port or return -1 for non-INET[6] lsa's */ |
513 | int get_nport(const struct sockaddr *sa) FAST_FUNC; |
514 | /* Reverse DNS. Returns NULL on failure. */ |
515 | char* xmalloc_sockaddr2host(const struct sockaddr *sa) FAST_FUNC; |
516 | /* This one doesn't append :PORTNUM */ |
517 | char* xmalloc_sockaddr2host_noport(const struct sockaddr *sa) FAST_FUNC; |
518 | /* This one also doesn't fall back to dotted IP (returns NULL) */ |
519 | char* xmalloc_sockaddr2hostonly_noport(const struct sockaddr *sa) FAST_FUNC; |
520 | /* inet_[ap]ton on steroids */ |
521 | char* xmalloc_sockaddr2dotted(const struct sockaddr *sa) FAST_FUNC; |
522 | char* xmalloc_sockaddr2dotted_noport(const struct sockaddr *sa) FAST_FUNC; |
523 | // "old" (ipv4 only) API |
524 | // users: traceroute.c hostname.c - use _list_ of all IPs |
525 | struct hostent *xgethostbyname(const char *name) FAST_FUNC; |
526 | // Also mount.c and inetd.c are using gethostbyname(), |
527 | // + inet_common.c has additional IPv4-only stuff |
528 | |
529 | |
530 | void socket_want_pktinfo(int fd) FAST_FUNC; |
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, |
534 | socklen_t tolen) FAST_FUNC; |
535 | ssize_t recv_from_to(int fd, void *buf, size_t len, int flags, |
536 | struct sockaddr *from, |
537 | struct sockaddr *to, |
538 | socklen_t sa_size) FAST_FUNC; |
539 | |
540 | char *xstrdup(const char *s) FAST_FUNC; |
541 | char *xstrndup(const char *s, int n) FAST_FUNC; |
542 | void overlapping_strcpy(char *dst, const char *src) FAST_FUNC; |
543 | char *safe_strncpy(char *dst, const char *src, size_t size) FAST_FUNC; |
544 | /* Guaranteed to NOT be a macro (smallest code). Saves nearly 2k on uclibc. |
545 | * But potentially slow, don't use in one-billion-times loops */ |
546 | int bb_putchar(int ch) FAST_FUNC; |
547 | char *xasprintf(const char *format, ...) __attribute__ ((format (printf, 1, 2))) FAST_FUNC; |
548 | /* Prints unprintable chars ch as ^C or M-c to file |
549 | * (M-c is used only if ch is ORed with PRINTABLE_META), |
550 | * else it is printed as-is (except for ch = 0x9b) */ |
551 | enum { PRINTABLE_META = 0x100 }; |
552 | void fputc_printable(int ch, FILE *file) FAST_FUNC; |
553 | // gcc-4.1.1 still isn't good enough at optimizing it |
554 | // (+200 bytes compared to macro) |
555 | //static ALWAYS_INLINE |
556 | //int LONE_DASH(const char *s) { return s[0] == '-' && !s[1]; } |
557 | //static ALWAYS_INLINE |
558 | //int NOT_LONE_DASH(const char *s) { return s[0] != '-' || s[1]; } |
559 | #define LONE_DASH(s) ((s)[0] == '-' && !(s)[1]) |
560 | #define NOT_LONE_DASH(s) ((s)[0] != '-' || (s)[1]) |
561 | #define LONE_CHAR(s,c) ((s)[0] == (c) && !(s)[1]) |
562 | #define NOT_LONE_CHAR(s,c) ((s)[0] != (c) || (s)[1]) |
563 | #define DOT_OR_DOTDOT(s) ((s)[0] == '.' && (!(s)[1] || ((s)[1] == '.' && !(s)[2]))) |
564 | |
565 | /* dmalloc will redefine these to it's own implementation. It is safe |
566 | * to have the prototypes here unconditionally. */ |
567 | void *malloc_or_warn(size_t size) FAST_FUNC; |
568 | void *xmalloc(size_t size) FAST_FUNC; |
569 | void *xzalloc(size_t size) FAST_FUNC; |
570 | void *xrealloc(void *old, size_t size) FAST_FUNC; |
571 | /* After xrealloc_vector(v, 4, idx) it's ok to use |
572 | * at least v[idx] and v[idx+1], for all idx values. |
573 | * shift specifies how many new elements are added (1: 2, 2: 4... 8: 256...) |
574 | * when all elements are used up. New elements are zeroed out. */ |
575 | #define xrealloc_vector(vector, shift, idx) \ |
576 | xrealloc_vector_helper((vector), (sizeof((vector)[0]) << 8) + (shift), (idx)) |
577 | void* xrealloc_vector_helper(void *vector, unsigned sizeof_and_shift, int idx) FAST_FUNC; |
578 | |
579 | |
580 | extern ssize_t safe_read(int fd, void *buf, size_t count) FAST_FUNC; |
581 | extern ssize_t nonblock_safe_read(int fd, void *buf, size_t count) FAST_FUNC; |
582 | // NB: will return short read on error, not -1, |
583 | // if some data was read before error occurred |
584 | extern ssize_t full_read(int fd, void *buf, size_t count) FAST_FUNC; |
585 | extern void xread(int fd, void *buf, size_t count) FAST_FUNC; |
586 | extern unsigned char xread_char(int fd) FAST_FUNC; |
587 | extern ssize_t read_close(int fd, void *buf, size_t maxsz) FAST_FUNC; |
588 | extern ssize_t open_read_close(const char *filename, void *buf, size_t maxsz) FAST_FUNC; |
589 | // Reads one line a-la fgets (but doesn't save terminating '\n'). |
590 | // Reads byte-by-byte. Useful when it is important to not read ahead. |
591 | // Bytes are appended to pfx (which must be malloced, or NULL). |
592 | extern char *xmalloc_reads(int fd, char *pfx, size_t *maxsz_p) FAST_FUNC; |
593 | /* Reads block up to *maxsz_p (default: MAX_INT(ssize_t)) */ |
594 | extern void *xmalloc_read(int fd, size_t *maxsz_p) FAST_FUNC; |
595 | /* Returns NULL if file can't be opened */ |
596 | extern void *xmalloc_open_read_close(const char *filename, size_t *maxsz_p) FAST_FUNC; |
597 | /* Autodetects .gz etc */ |
598 | extern int open_zipped(const char *fname) FAST_FUNC; |
599 | extern void *xmalloc_open_zipped_read_close(const char *fname, size_t *maxsz_p) FAST_FUNC; |
600 | /* Never returns NULL */ |
601 | extern void *xmalloc_xopen_read_close(const char *filename, size_t *maxsz_p) FAST_FUNC; |
602 | |
603 | extern ssize_t safe_write(int fd, const void *buf, size_t count) FAST_FUNC; |
604 | // NB: will return short write on error, not -1, |
605 | // if some data was written before error occurred |
606 | extern ssize_t full_write(int fd, const void *buf, size_t count) FAST_FUNC; |
607 | extern void xwrite(int fd, const void *buf, size_t count) FAST_FUNC; |
608 | extern void xopen_xwrite_close(const char* file, const char *str) FAST_FUNC; |
609 | |
610 | /* Reads and prints to stdout till eof, then closes FILE. Exits on error: */ |
611 | extern void xprint_and_close_file(FILE *file) FAST_FUNC; |
612 | |
613 | extern char *bb_get_chunk_from_file(FILE *file, int *end) FAST_FUNC; |
614 | extern char *bb_get_chunk_with_continuation(FILE *file, int *end, int *lineno) FAST_FUNC; |
615 | /* Reads up to (and including) TERMINATING_STRING: */ |
616 | extern char *xmalloc_fgets_str(FILE *file, const char *terminating_string) FAST_FUNC; |
617 | /* Chops off TERMINATING_STRING from the end: */ |
618 | extern char *xmalloc_fgetline_str(FILE *file, const char *terminating_string) FAST_FUNC; |
619 | /* Reads up to (and including) "\n" or NUL byte: */ |
620 | extern char *xmalloc_fgets(FILE *file) FAST_FUNC; |
621 | /* Chops off '\n' from the end, unlike fgets: */ |
622 | extern char *xmalloc_fgetline(FILE *file) FAST_FUNC; |
623 | /* Same, but doesn't try to conserve space (may have some slack after the end) */ |
624 | /* extern char *xmalloc_fgetline_fast(FILE *file) FAST_FUNC; */ |
625 | |
626 | extern void die_if_ferror(FILE *file, const char *msg) FAST_FUNC; |
627 | extern void die_if_ferror_stdout(void) FAST_FUNC; |
628 | extern void xfflush_stdout(void) FAST_FUNC; |
629 | extern void fflush_stdout_and_exit(int retval) NORETURN FAST_FUNC; |
630 | extern int fclose_if_not_stdin(FILE *file) FAST_FUNC; |
631 | extern FILE *xfopen(const char *filename, const char *mode) FAST_FUNC; |
632 | /* Prints warning to stderr and returns NULL on failure: */ |
633 | extern FILE *fopen_or_warn(const char *filename, const char *mode) FAST_FUNC; |
634 | /* "Opens" stdin if filename is special, else just opens file: */ |
635 | extern FILE *xfopen_stdin(const char *filename) FAST_FUNC; |
636 | extern FILE *fopen_or_warn_stdin(const char *filename) FAST_FUNC; |
637 | extern FILE* fopen_for_read(const char *path) FAST_FUNC; |
638 | extern FILE* xfopen_for_read(const char *path) FAST_FUNC; |
639 | extern FILE* fopen_for_write(const char *path) FAST_FUNC; |
640 | extern FILE* xfopen_for_write(const char *path) FAST_FUNC; |
641 | |
642 | int bb_pstrcmp(const void *a, const void *b) /* not FAST_FUNC! */; |
643 | void qsort_string_vector(char **sv, unsigned count) FAST_FUNC; |
644 | |
645 | /* Wrapper which restarts poll on EINTR or ENOMEM. |
646 | * On other errors complains [perror("poll")] and returns. |
647 | * Warning! May take (much) longer than timeout_ms to return! |
648 | * If this is a problem, use bare poll and open-code EINTR/ENOMEM handling */ |
649 | int safe_poll(struct pollfd *ufds, nfds_t nfds, int timeout_ms) FAST_FUNC; |
650 | |
651 | char *safe_gethostname(void) FAST_FUNC; |
652 | char *safe_getdomainname(void) FAST_FUNC; |
653 | |
654 | /* Convert each alpha char in str to lower-case */ |
655 | char* str_tolower(char *str) FAST_FUNC; |
656 | |
657 | char *utoa(unsigned n) FAST_FUNC; |
658 | char *itoa(int n) FAST_FUNC; |
659 | /* Returns a pointer past the formatted number, does NOT null-terminate */ |
660 | char *utoa_to_buf(unsigned n, char *buf, unsigned buflen) FAST_FUNC; |
661 | char *itoa_to_buf(int n, char *buf, unsigned buflen) FAST_FUNC; |
662 | /* Intelligent formatters of bignums */ |
663 | void smart_ulltoa4(unsigned long long ul, char buf[5], const char *scale) FAST_FUNC; |
664 | void smart_ulltoa5(unsigned long long ul, char buf[5], const char *scale) FAST_FUNC; |
665 | //TODO: provide pointer to buf (avoid statics)? |
666 | const char *make_human_readable_str(unsigned long long size, |
667 | unsigned long block_size, unsigned long display_unit) FAST_FUNC; |
668 | /* Put a string of hex bytes ("1b2e66fe"...), return advanced pointer */ |
669 | char *bin2hex(char *buf, const char *cp, int count) FAST_FUNC; |
670 | |
671 | /* Last element is marked by mult == 0 */ |
672 | struct suffix_mult { |
673 | char suffix[4]; |
674 | unsigned mult; |
675 | }; |
676 | #include "xatonum.h" |
677 | /* Specialized: */ |
678 | /* Using xatoi() instead of naive atoi() is not always convenient - |
679 | * in many places people want *non-negative* values, but store them |
680 | * in signed int. Therefore we need this one: |
681 | * dies if input is not in [0, INT_MAX] range. Also will reject '-0' etc */ |
682 | int xatoi_u(const char *numstr) FAST_FUNC; |
683 | /* Useful for reading port numbers */ |
684 | uint16_t xatou16(const char *numstr) FAST_FUNC; |
685 | |
686 | |
687 | /* These parse entries in /etc/passwd and /etc/group. This is desirable |
688 | * for BusyBox since we want to avoid using the glibc NSS stuff, which |
689 | * increases target size and is often not needed on embedded systems. */ |
690 | long xuname2uid(const char *name) FAST_FUNC; |
691 | long xgroup2gid(const char *name) FAST_FUNC; |
692 | /* wrapper: allows string to contain numeric uid or gid */ |
693 | unsigned long get_ug_id(const char *s, long FAST_FUNC (*xname2id)(const char *)) FAST_FUNC; |
694 | /* from chpst. Does not die, returns 0 on failure */ |
695 | struct bb_uidgid_t { |
696 | uid_t uid; |
697 | gid_t gid; |
698 | }; |
699 | /* always sets uid and gid */ |
700 | int get_uidgid(struct bb_uidgid_t*, const char*, int numeric_ok) FAST_FUNC; |
701 | /* always sets uid and gid, allows numeric; exits on failure */ |
702 | void xget_uidgid(struct bb_uidgid_t*, const char*) FAST_FUNC; |
703 | /* chown-like handling of "user[:[group]" */ |
704 | void parse_chown_usergroup_or_die(struct bb_uidgid_t *u, char *user_group) FAST_FUNC; |
705 | /* bb_getpwuid, bb_getgrgid: |
706 | * bb_getXXXid(buf, bufsz, id) - copy user/group name or id |
707 | * as a string to buf, return user/group name or NULL |
708 | * bb_getXXXid(NULL, 0, id) - return user/group name or NULL |
709 | * bb_getXXXid(NULL, -1, id) - return user/group name or exit |
710 | */ |
711 | char *bb_getpwuid(char *name, int bufsize, long uid) FAST_FUNC; |
712 | char *bb_getgrgid(char *group, int bufsize, long gid) FAST_FUNC; |
713 | /* versions which cache results (useful for ps, ls etc) */ |
714 | const char* get_cached_username(uid_t uid) FAST_FUNC; |
715 | const char* get_cached_groupname(gid_t gid) FAST_FUNC; |
716 | void clear_username_cache(void) FAST_FUNC; |
717 | /* internally usernames are saved in fixed-sized char[] buffers */ |
718 | enum { USERNAME_MAX_SIZE = 16 - sizeof(int) }; |
719 | #if ENABLE_FEATURE_CHECK_NAMES |
720 | void die_if_bad_username(const char* name) FAST_FUNC; |
721 | #else |
722 | #define die_if_bad_username(name) ((void)(name)) |
723 | #endif |
724 | |
725 | int execable_file(const char *name) FAST_FUNC; |
726 | char *find_execable(const char *filename, char **PATHp) FAST_FUNC; |
727 | int exists_execable(const char *filename) FAST_FUNC; |
728 | |
729 | /* BB_EXECxx always execs (it's not doing NOFORK/NOEXEC stuff), |
730 | * but it may exec busybox and call applet instead of searching PATH. |
731 | */ |
732 | #if ENABLE_FEATURE_PREFER_APPLETS |
733 | int bb_execvp(const char *file, char *const argv[]) FAST_FUNC; |
734 | #define BB_EXECVP(prog,cmd) bb_execvp(prog,cmd) |
735 | #define BB_EXECLP(prog,cmd,...) \ |
736 | execlp((find_applet_by_name(prog) >= 0) ? CONFIG_BUSYBOX_EXEC_PATH : prog, \ |
737 | cmd, __VA_ARGS__) |
738 | #else |
739 | #define BB_EXECVP(prog,cmd) execvp(prog,cmd) |
740 | #define BB_EXECLP(prog,cmd,...) execlp(prog,cmd, __VA_ARGS__) |
741 | #endif |
742 | |
743 | /* NOMMU friendy fork+exec */ |
744 | pid_t spawn(char **argv) FAST_FUNC; |
745 | pid_t xspawn(char **argv) FAST_FUNC; |
746 | |
747 | pid_t safe_waitpid(pid_t pid, int *wstat, int options) FAST_FUNC; |
748 | /* Unlike waitpid, waits ONLY for one process. |
749 | * It's safe to pass negative 'pids' from failed [v]fork - |
750 | * wait4pid will return -1 (and will not clobber [v]fork's errno). |
751 | * IOW: rc = wait4pid(spawn(argv)); |
752 | * if (rc < 0) bb_perror_msg("%s", argv[0]); |
753 | * if (rc > 0) bb_error_msg("exit code: %d", rc); |
754 | */ |
755 | int wait4pid(pid_t pid) FAST_FUNC; |
756 | pid_t wait_any_nohang(int *wstat) FAST_FUNC; |
757 | #define wait_crashed(w) ((w) & 127) |
758 | #define wait_exitcode(w) ((w) >> 8) |
759 | #define wait_stopsig(w) ((w) >> 8) |
760 | #define wait_stopped(w) (((w) & 127) == 127) |
761 | /* wait4pid(spawn(argv)) + NOFORK/NOEXEC (if configured) */ |
762 | pid_t spawn_and_wait(char **argv) FAST_FUNC; |
763 | struct nofork_save_area { |
764 | jmp_buf die_jmp; |
765 | const char *applet_name; |
766 | int xfunc_error_retval; |
767 | uint32_t option_mask32; |
768 | int die_sleep; |
769 | smallint saved; |
770 | }; |
771 | void save_nofork_data(struct nofork_save_area *save) FAST_FUNC; |
772 | void restore_nofork_data(struct nofork_save_area *save) FAST_FUNC; |
773 | /* Does NOT check that applet is NOFORK, just blindly runs it */ |
774 | int run_nofork_applet(int applet_no, char **argv) FAST_FUNC; |
775 | int run_nofork_applet_prime(struct nofork_save_area *old, int applet_no, char **argv) FAST_FUNC; |
776 | |
777 | /* Helpers for daemonization. |
778 | * |
779 | * bb_daemonize(flags) = daemonize, does not compile on NOMMU |
780 | * |
781 | * bb_daemonize_or_rexec(flags, argv) = daemonizes on MMU (and ignores argv), |
782 | * rexec's itself on NOMMU with argv passed as command line. |
783 | * Thus bb_daemonize_or_rexec may cause your <applet>_main() to be re-executed |
784 | * from the start. (It will detect it and not reexec again second time). |
785 | * You have to audit carefully that you don't do something twice as a result |
786 | * (opening files/sockets, parsing config files etc...)! |
787 | * |
788 | * Both of the above will redirect fd 0,1,2 to /dev/null and drop ctty |
789 | * (will do setsid()). |
790 | * |
791 | * forkexit_or_rexec(argv) = bare-bones "fork + parent exits" on MMU, |
792 | * "vfork + re-exec ourself" on NOMMU. No fd redirection, no setsid(). |
793 | * Currently used for setsid only. On MMU ignores argv. |
794 | * |
795 | * Helper for network daemons in foreground mode: |
796 | * |
797 | * bb_sanitize_stdio() = make sure that fd 0,1,2 are opened by opening them |
798 | * to /dev/null if they are not. |
799 | */ |
800 | enum { |
801 | DAEMON_CHDIR_ROOT = 1, |
802 | DAEMON_DEVNULL_STDIO = 2, |
803 | DAEMON_CLOSE_EXTRA_FDS = 4, |
804 | DAEMON_ONLY_SANITIZE = 8, /* internal use */ |
805 | }; |
806 | #if BB_MMU |
807 | void forkexit_or_rexec(void) FAST_FUNC; |
808 | enum { re_execed = 0 }; |
809 | # define forkexit_or_rexec(argv) forkexit_or_rexec() |
810 | # define bb_daemonize_or_rexec(flags, argv) bb_daemonize_or_rexec(flags) |
811 | # define bb_daemonize(flags) bb_daemonize_or_rexec(flags, bogus) |
812 | #else |
813 | void re_exec(char **argv) NORETURN FAST_FUNC; |
814 | void forkexit_or_rexec(char **argv) FAST_FUNC; |
815 | extern bool re_execed; |
816 | int BUG_fork_is_unavailable_on_nommu(void) FAST_FUNC; |
817 | int BUG_daemon_is_unavailable_on_nommu(void) FAST_FUNC; |
818 | void BUG_bb_daemonize_is_unavailable_on_nommu(void) FAST_FUNC; |
819 | # define fork() BUG_fork_is_unavailable_on_nommu() |
820 | # define daemon(a,b) BUG_daemon_is_unavailable_on_nommu() |
821 | # define bb_daemonize(a) BUG_bb_daemonize_is_unavailable_on_nommu() |
822 | #endif |
823 | void bb_daemonize_or_rexec(int flags, char **argv) FAST_FUNC; |
824 | void bb_sanitize_stdio(void) FAST_FUNC; |
825 | /* Clear dangerous stuff, set PATH. Return 1 if was run by different user. */ |
826 | int sanitize_env_if_suid(void) FAST_FUNC; |
827 | |
828 | |
829 | extern const char *const bb_argv_dash[]; /* "-", NULL */ |
830 | extern const char *opt_complementary; |
831 | #if ENABLE_GETOPT_LONG |
832 | #define No_argument "\0" |
833 | #define Required_argument "\001" |
834 | #define Optional_argument "\002" |
835 | extern const char *applet_long_options; |
836 | #endif |
837 | extern uint32_t option_mask32; |
838 | extern uint32_t getopt32(char **argv, const char *applet_opts, ...) FAST_FUNC; |
839 | |
840 | |
841 | typedef struct llist_t { |
842 | char *data; |
843 | struct llist_t *link; |
844 | } llist_t; |
845 | void llist_add_to(llist_t **old_head, void *data) FAST_FUNC; |
846 | void llist_add_to_end(llist_t **list_head, void *data) FAST_FUNC; |
847 | void *llist_pop(llist_t **elm) FAST_FUNC; |
848 | void llist_unlink(llist_t **head, llist_t *elm) FAST_FUNC; |
849 | void llist_free(llist_t *elm, void (*freeit)(void *data)) FAST_FUNC; |
850 | llist_t *llist_rev(llist_t *list) FAST_FUNC; |
851 | /* BTW, surprisingly, changing API to |
852 | * llist_t *llist_add_to(llist_t *old_head, void *data) |
853 | * etc does not result in smaller code... */ |
854 | |
855 | /* start_stop_daemon and udhcpc are special - they want |
856 | * to create pidfiles regardless of FEATURE_PIDFILE */ |
857 | #if ENABLE_FEATURE_PIDFILE || defined(WANT_PIDFILE) |
858 | /* True only if we created pidfile which is *file*, not /dev/null etc */ |
859 | extern smallint wrote_pidfile; |
860 | void write_pidfile(const char *path) FAST_FUNC; |
861 | #define remove_pidfile(path) do { if (wrote_pidfile) unlink(path); } while (0) |
862 | #else |
863 | enum { wrote_pidfile = 0 }; |
864 | #define write_pidfile(path) ((void)0) |
865 | #define remove_pidfile(path) ((void)0) |
866 | #endif |
867 | |
868 | enum { |
869 | LOGMODE_NONE = 0, |
870 | LOGMODE_STDIO = (1 << 0), |
871 | LOGMODE_SYSLOG = (1 << 1) * ENABLE_FEATURE_SYSLOG, |
872 | LOGMODE_BOTH = LOGMODE_SYSLOG + LOGMODE_STDIO, |
873 | }; |
874 | extern const char *msg_eol; |
875 | extern smallint logmode; |
876 | extern int die_sleep; |
877 | extern int xfunc_error_retval; |
878 | extern jmp_buf die_jmp; |
879 | extern void xfunc_die(void) NORETURN FAST_FUNC; |
880 | extern void bb_show_usage(void) NORETURN FAST_FUNC; |
881 | extern void bb_error_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2))) FAST_FUNC; |
882 | extern void bb_error_msg_and_die(const char *s, ...) __attribute__ ((noreturn, format (printf, 1, 2))) FAST_FUNC; |
883 | extern void bb_perror_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2))) FAST_FUNC; |
884 | extern void bb_simple_perror_msg(const char *s) FAST_FUNC; |
885 | extern void bb_perror_msg_and_die(const char *s, ...) __attribute__ ((noreturn, format (printf, 1, 2))) FAST_FUNC; |
886 | extern void bb_simple_perror_msg_and_die(const char *s) __attribute__ ((noreturn)) FAST_FUNC; |
887 | extern void bb_herror_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2))) FAST_FUNC; |
888 | extern void bb_herror_msg_and_die(const char *s, ...) __attribute__ ((noreturn, format (printf, 1, 2))) FAST_FUNC; |
889 | extern void bb_perror_nomsg_and_die(void) NORETURN FAST_FUNC; |
890 | extern void bb_perror_nomsg(void) FAST_FUNC; |
891 | extern void bb_info_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2))) FAST_FUNC; |
892 | extern void bb_verror_msg(const char *s, va_list p, const char *strerr) FAST_FUNC; |
893 | |
894 | /* We need to export XXX_main from libbusybox |
895 | * only if we build "individual" binaries |
896 | */ |
897 | #if ENABLE_FEATURE_INDIVIDUAL |
898 | #define MAIN_EXTERNALLY_VISIBLE EXTERNALLY_VISIBLE |
899 | #else |
900 | #define MAIN_EXTERNALLY_VISIBLE |
901 | #endif |
902 | |
903 | |
904 | /* Applets which are useful from another applets */ |
905 | int bb_cat(char** argv); |
906 | /* If shell needs them, they exist even if not enabled as applets */ |
907 | int echo_main(int argc, char** argv) USE_ECHO(MAIN_EXTERNALLY_VISIBLE); |
908 | int printf_main(int argc, char **argv) USE_PRINTF(MAIN_EXTERNALLY_VISIBLE); |
909 | int test_main(int argc, char **argv) USE_TEST(MAIN_EXTERNALLY_VISIBLE); |
910 | int kill_main(int argc, char **argv) USE_KILL(MAIN_EXTERNALLY_VISIBLE); |
911 | /* Similar, but used by chgrp, not shell */ |
912 | int chown_main(int argc, char **argv) USE_CHOWN(MAIN_EXTERNALLY_VISIBLE); |
913 | /* Don't need USE_xxx() guard for these */ |
914 | int gunzip_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
915 | int bunzip2_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
916 | |
917 | #if ENABLE_ROUTE |
918 | void bb_displayroutes(int noresolve, int netstatfmt) FAST_FUNC; |
919 | #endif |
920 | |
921 | |
922 | /* "Keycodes" that report an escape sequence. |
923 | * We use something which fits into signed char, |
924 | * yet doesn't represent any valid Unicode characher. |
925 | * Also, -1 is reserved for error indication and we don't use it. */ |
926 | enum { |
927 | KEYCODE_UP = -2, |
928 | KEYCODE_DOWN = -3, |
929 | KEYCODE_RIGHT = -4, |
930 | KEYCODE_LEFT = -5, |
931 | KEYCODE_HOME = -6, |
932 | KEYCODE_END = -7, |
933 | KEYCODE_INSERT = -8, |
934 | KEYCODE_DELETE = -9, |
935 | KEYCODE_PAGEUP = -10, |
936 | KEYCODE_PAGEDOWN = -11, |
937 | #if 0 |
938 | KEYCODE_FUN1 = -12, |
939 | KEYCODE_FUN2 = -13, |
940 | KEYCODE_FUN3 = -14, |
941 | KEYCODE_FUN4 = -15, |
942 | KEYCODE_FUN5 = -16, |
943 | KEYCODE_FUN6 = -17, |
944 | KEYCODE_FUN7 = -18, |
945 | KEYCODE_FUN8 = -19, |
946 | KEYCODE_FUN9 = -20, |
947 | KEYCODE_FUN10 = -21, |
948 | KEYCODE_FUN11 = -22, |
949 | KEYCODE_FUN12 = -23, |
950 | #endif |
951 | /* How long the longest ESC sequence we know? */ |
952 | KEYCODE_BUFFER_SIZE = 4 |
953 | }; |
954 | int read_key(int fd, smalluint *nbuffered, char *buffer) FAST_FUNC; |
955 | |
956 | |
957 | /* Networking */ |
958 | int create_icmp_socket(void) FAST_FUNC; |
959 | int create_icmp6_socket(void) FAST_FUNC; |
960 | /* interface.c */ |
961 | /* This structure defines protocol families and their handlers. */ |
962 | struct aftype { |
963 | const char *name; |
964 | const char *title; |
965 | int af; |
966 | int alen; |
967 | char* FAST_FUNC (*print)(unsigned char *); |
968 | const char* FAST_FUNC (*sprint)(struct sockaddr *, int numeric); |
969 | int FAST_FUNC (*input)(/*int type,*/ const char *bufp, struct sockaddr *); |
970 | void FAST_FUNC (*herror)(char *text); |
971 | int FAST_FUNC (*rprint)(int options); |
972 | int FAST_FUNC (*rinput)(int typ, int ext, char **argv); |
973 | /* may modify src */ |
974 | int FAST_FUNC (*getmask)(char *src, struct sockaddr *mask, char *name); |
975 | }; |
976 | /* This structure defines hardware protocols and their handlers. */ |
977 | struct hwtype { |
978 | const char *name; |
979 | const char *title; |
980 | int type; |
981 | int alen; |
982 | char* FAST_FUNC (*print)(unsigned char *); |
983 | int FAST_FUNC (*input)(const char *, struct sockaddr *); |
984 | int FAST_FUNC (*activate)(int fd); |
985 | int suppress_null_addr; |
986 | }; |
987 | extern smallint interface_opt_a; |
988 | int display_interfaces(char *ifname) FAST_FUNC; |
989 | #if ENABLE_FEATURE_HWIB |
990 | int in_ib(const char *bufp, struct sockaddr *sap) FAST_FUNC; |
991 | #else |
992 | #define in_ib(a, b) 1 /* fail */ |
993 | #endif |
994 | const struct aftype *get_aftype(const char *name) FAST_FUNC; |
995 | const struct hwtype *get_hwtype(const char *name) FAST_FUNC; |
996 | const struct hwtype *get_hwntype(int type) FAST_FUNC; |
997 | |
998 | |
999 | #ifndef BUILD_INDIVIDUAL |
1000 | extern int find_applet_by_name(const char *name) FAST_FUNC; |
1001 | /* Returns only if applet is not found. */ |
1002 | extern void run_applet_and_exit(const char *name, char **argv) FAST_FUNC; |
1003 | extern void run_applet_no_and_exit(int a, char **argv) NORETURN FAST_FUNC; |
1004 | #endif |
1005 | |
1006 | #ifdef HAVE_MNTENT_H |
1007 | extern int match_fstype(const struct mntent *mt, const char *fstypes) FAST_FUNC; |
1008 | extern struct mntent *find_mount_point(const char *name, const char *table) FAST_FUNC; |
1009 | #endif |
1010 | extern void erase_mtab(const char * name) FAST_FUNC; |
1011 | extern unsigned int tty_baud_to_value(speed_t speed) FAST_FUNC; |
1012 | extern speed_t tty_value_to_baud(unsigned int value) FAST_FUNC; |
1013 | extern void bb_warn_ignoring_args(int n) FAST_FUNC; |
1014 | |
1015 | extern int get_linux_version_code(void) FAST_FUNC; |
1016 | |
1017 | extern char *query_loop(const char *device) FAST_FUNC; |
1018 | extern int del_loop(const char *device) FAST_FUNC; |
1019 | /* If *devname is not NULL, use that name, otherwise try to find free one, |
1020 | * malloc and return it in *devname. |
1021 | * return value: 1: read-only loopdev was setup, 0: rw, < 0: error */ |
1022 | extern int set_loop(char **devname, const char *file, unsigned long long offset) FAST_FUNC; |
1023 | |
1024 | |
1025 | //TODO: pass buf pointer or return allocated buf (avoid statics)? |
1026 | char *bb_askpass(int timeout, const char * prompt) FAST_FUNC; |
1027 | int bb_ask_confirmation(void) FAST_FUNC; |
1028 | |
1029 | int bb_parse_mode(const char* s, mode_t* theMode) FAST_FUNC; |
1030 | |
1031 | /* |
1032 | * Config file parser |
1033 | */ |
1034 | enum { |
1035 | PARSE_COLLAPSE = 0x00010000, // treat consecutive delimiters as one |
1036 | PARSE_TRIM = 0x00020000, // trim leading and trailing delimiters |
1037 | // TODO: COLLAPSE and TRIM seem to always go in pair |
1038 | PARSE_GREEDY = 0x00040000, // last token takes entire remainder of the line |
1039 | PARSE_MIN_DIE = 0x00100000, // die if < min tokens found |
1040 | // keep a copy of current line |
1041 | PARSE_KEEP_COPY = 0x00200000 * ENABLE_FEATURE_CROND_D, |
1042 | // PARSE_ESCAPE = 0x00400000, // process escape sequences in tokens |
1043 | // NORMAL is: |
1044 | // * remove leading and trailing delimiters and collapse |
1045 | // multiple delimiters into one |
1046 | // * warn and continue if less than mintokens delimiters found |
1047 | // * grab everything into last token |
1048 | PARSE_NORMAL = PARSE_COLLAPSE | PARSE_TRIM | PARSE_GREEDY, |
1049 | }; |
1050 | typedef struct parser_t { |
1051 | FILE *fp; |
1052 | char *line; |
1053 | char *data; |
1054 | int lineno; |
1055 | } parser_t; |
1056 | parser_t* config_open(const char *filename) FAST_FUNC; |
1057 | parser_t* config_open2(const char *filename, FILE* FAST_FUNC (*fopen_func)(const char *path)) FAST_FUNC; |
1058 | int config_read(parser_t *parser, char **tokens, unsigned flags, const char *delims) FAST_FUNC; |
1059 | #define config_read(parser, tokens, max, min, str, flags) \ |
1060 | config_read(parser, tokens, ((flags) | (((min) & 0xFF) << 8) | ((max) & 0xFF)), str) |
1061 | void config_close(parser_t *parser) FAST_FUNC; |
1062 | |
1063 | /* Concatenate path and filename to new allocated buffer. |
1064 | * Add "/" only as needed (no duplicate "//" are produced). |
1065 | * If path is NULL, it is assumed to be "/". |
1066 | * filename should not be NULL. */ |
1067 | char *concat_path_file(const char *path, const char *filename) FAST_FUNC; |
1068 | char *concat_subpath_file(const char *path, const char *filename) FAST_FUNC; |
1069 | const char *bb_basename(const char *name) FAST_FUNC; |
1070 | /* NB: can violate const-ness (similarly to strchr) */ |
1071 | char *last_char_is(const char *s, int c) FAST_FUNC; |
1072 | |
1073 | |
1074 | int bb_make_directory(char *path, long mode, int flags) FAST_FUNC; |
1075 | |
1076 | int get_signum(const char *name) FAST_FUNC; |
1077 | const char *get_signame(int number) FAST_FUNC; |
1078 | void print_signames(void) FAST_FUNC; |
1079 | |
1080 | char *bb_simplify_path(const char *path) FAST_FUNC; |
1081 | |
1082 | #define FAIL_DELAY 3 |
1083 | extern void bb_do_delay(int seconds) FAST_FUNC; |
1084 | extern void change_identity(const struct passwd *pw) FAST_FUNC; |
1085 | extern void run_shell(const char *shell, int loginshell, const char *command, const char **additional_args) NORETURN FAST_FUNC; |
1086 | extern void run_shell(const char *shell, int loginshell, const char *command, const char **additional_args) FAST_FUNC; |
1087 | #if ENABLE_SELINUX |
1088 | extern void renew_current_security_context(void) FAST_FUNC; |
1089 | extern void set_current_security_context(security_context_t sid) FAST_FUNC; |
1090 | extern context_t set_security_context_component(security_context_t cur_context, |
1091 | char *user, char *role, char *type, char *range) FAST_FUNC; |
1092 | extern void setfscreatecon_or_die(security_context_t scontext) FAST_FUNC; |
1093 | extern void selinux_preserve_fcontext(int fdesc) FAST_FUNC; |
1094 | #else |
1095 | #define selinux_preserve_fcontext(fdesc) ((void)0) |
1096 | #endif |
1097 | extern void selinux_or_die(void) FAST_FUNC; |
1098 | extern int restricted_shell(const char *shell) FAST_FUNC; |
1099 | |
1100 | /* setup_environment: |
1101 | * if clear_env = 1: cd(pw->pw_dir), clear environment, then set |
1102 | * TERM=(old value) |
1103 | * USER=pw->pw_name, LOGNAME=pw->pw_name |
1104 | * PATH=bb_default_[root_]path |
1105 | * HOME=pw->pw_dir |
1106 | * SHELL=shell |
1107 | * else if change_env = 1: |
1108 | * if not root (if pw->pw_uid != 0): |
1109 | * USER=pw->pw_name, LOGNAME=pw->pw_name |
1110 | * HOME=pw->pw_dir |
1111 | * SHELL=shell |
1112 | * else does nothing |
1113 | */ |
1114 | extern void setup_environment(const char *shell, int clear_env, int change_env, const struct passwd *pw) FAST_FUNC; |
1115 | extern int correct_password(const struct passwd *pw) FAST_FUNC; |
1116 | /* Returns a malloced string */ |
1117 | #if !ENABLE_USE_BB_CRYPT |
1118 | #define pw_encrypt(clear, salt, cleanup) pw_encrypt(clear, salt) |
1119 | #endif |
1120 | extern char *pw_encrypt(const char *clear, const char *salt, int cleanup) FAST_FUNC; |
1121 | extern int obscure(const char *old, const char *newval, const struct passwd *pwdp) FAST_FUNC; |
1122 | /* rnd is additional random input. New one is returned. |
1123 | * Useful if you call crypt_make_salt many times in a row: |
1124 | * rnd = crypt_make_salt(buf1, 4, 0); |
1125 | * rnd = crypt_make_salt(buf2, 4, rnd); |
1126 | * rnd = crypt_make_salt(buf3, 4, rnd); |
1127 | * (otherwise we risk having same salt generated) |
1128 | */ |
1129 | extern int crypt_make_salt(char *p, int cnt, int rnd) FAST_FUNC; |
1130 | /* Returns number of lines changed, or -1 on error */ |
1131 | extern int update_passwd(const char *filename, const char *username, |
1132 | const char *new_pw) FAST_FUNC; |
1133 | |
1134 | int index_in_str_array(const char *const string_array[], const char *key) FAST_FUNC; |
1135 | int index_in_strings(const char *strings, const char *key) FAST_FUNC; |
1136 | int index_in_substr_array(const char *const string_array[], const char *key) FAST_FUNC; |
1137 | int index_in_substrings(const char *strings, const char *key) FAST_FUNC; |
1138 | const char *nth_string(const char *strings, int n) FAST_FUNC; |
1139 | |
1140 | extern void print_login_issue(const char *issue_file, const char *tty) FAST_FUNC; |
1141 | extern void print_login_prompt(void) FAST_FUNC; |
1142 | |
1143 | /* NB: typically you want to pass fd 0, not 1. Think 'applet | grep something' */ |
1144 | int get_terminal_width_height(int fd, unsigned *width, unsigned *height) FAST_FUNC; |
1145 | |
1146 | int tcsetattr_stdin_TCSANOW(const struct termios *tp) FAST_FUNC; |
1147 | |
1148 | /* NB: "unsigned request" is crucial! "int request" will break some arches! */ |
1149 | int ioctl_or_perror(int fd, unsigned request, void *argp, const char *fmt,...) __attribute__ ((format (printf, 4, 5))) FAST_FUNC; |
1150 | int ioctl_or_perror_and_die(int fd, unsigned request, void *argp, const char *fmt,...) __attribute__ ((format (printf, 4, 5))) FAST_FUNC; |
1151 | #if ENABLE_IOCTL_HEX2STR_ERROR |
1152 | int bb_ioctl_or_warn(int fd, unsigned request, void *argp, const char *ioctl_name) FAST_FUNC; |
1153 | int bb_xioctl(int fd, unsigned request, void *argp, const char *ioctl_name) FAST_FUNC; |
1154 | #define ioctl_or_warn(fd,request,argp) bb_ioctl_or_warn(fd,request,argp,#request) |
1155 | #define xioctl(fd,request,argp) bb_xioctl(fd,request,argp,#request) |
1156 | #else |
1157 | int bb_ioctl_or_warn(int fd, unsigned request, void *argp) FAST_FUNC; |
1158 | int bb_xioctl(int fd, unsigned request, void *argp) FAST_FUNC; |
1159 | #define ioctl_or_warn(fd,request,argp) bb_ioctl_or_warn(fd,request,argp) |
1160 | #define xioctl(fd,request,argp) bb_xioctl(fd,request,argp) |
1161 | #endif |
1162 | |
1163 | char *is_in_ino_dev_hashtable(const struct stat *statbuf) FAST_FUNC; |
1164 | void add_to_ino_dev_hashtable(const struct stat *statbuf, const char *name) FAST_FUNC; |
1165 | void reset_ino_dev_hashtable(void) FAST_FUNC; |
1166 | #ifdef __GLIBC__ |
1167 | /* At least glibc has horrendously large inline for this, so wrap it */ |
1168 | unsigned long long bb_makedev(unsigned int major, unsigned int minor) FAST_FUNC; |
1169 | #undef makedev |
1170 | #define makedev(a,b) bb_makedev(a,b) |
1171 | #endif |
1172 | |
1173 | |
1174 | #if ENABLE_FEATURE_EDITING |
1175 | /* It's NOT just ENABLEd or disabled. It's a number: */ |
1176 | #ifdef CONFIG_FEATURE_EDITING_HISTORY |
1177 | #define MAX_HISTORY (CONFIG_FEATURE_EDITING_HISTORY + 0) |
1178 | #else |
1179 | #define MAX_HISTORY 0 |
1180 | #endif |
1181 | typedef struct line_input_t { |
1182 | int flags; |
1183 | const char *path_lookup; |
1184 | #if MAX_HISTORY |
1185 | int cnt_history; |
1186 | int cur_history; |
1187 | USE_FEATURE_EDITING_SAVEHISTORY(const char *hist_file;) |
1188 | char *history[MAX_HISTORY + 1]; |
1189 | #endif |
1190 | } line_input_t; |
1191 | enum { |
1192 | DO_HISTORY = 1 * (MAX_HISTORY > 0), |
1193 | SAVE_HISTORY = 2 * (MAX_HISTORY > 0) * ENABLE_FEATURE_EDITING_SAVEHISTORY, |
1194 | TAB_COMPLETION = 4 * ENABLE_FEATURE_TAB_COMPLETION, |
1195 | USERNAME_COMPLETION = 8 * ENABLE_FEATURE_USERNAME_COMPLETION, |
1196 | VI_MODE = 0x10 * ENABLE_FEATURE_EDITING_VI, |
1197 | WITH_PATH_LOOKUP = 0x20, |
1198 | FOR_SHELL = DO_HISTORY | SAVE_HISTORY | TAB_COMPLETION | USERNAME_COMPLETION, |
1199 | }; |
1200 | line_input_t *new_line_input_t(int flags) FAST_FUNC; |
1201 | /* Returns: |
1202 | * -1 on read errors or EOF, or on bare Ctrl-D, |
1203 | * 0 on ctrl-C (the line entered is still returned in 'command'), |
1204 | * >0 length of input string, including terminating '\n' |
1205 | */ |
1206 | int read_line_input(const char* prompt, char* command, int maxsize, line_input_t *state) FAST_FUNC; |
1207 | #else |
1208 | int read_line_input(const char* prompt, char* command, int maxsize) FAST_FUNC; |
1209 | #define read_line_input(prompt, command, maxsize, state) \ |
1210 | read_line_input(prompt, command, maxsize) |
1211 | #endif |
1212 | |
1213 | |
1214 | #ifndef COMM_LEN |
1215 | #ifdef TASK_COMM_LEN |
1216 | enum { COMM_LEN = TASK_COMM_LEN }; |
1217 | #else |
1218 | /* synchronize with sizeof(task_struct.comm) in /usr/include/linux/sched.h */ |
1219 | enum { COMM_LEN = 16 }; |
1220 | #endif |
1221 | #endif |
1222 | typedef struct procps_status_t { |
1223 | DIR *dir; |
1224 | uint8_t shift_pages_to_bytes; |
1225 | uint8_t shift_pages_to_kb; |
1226 | /* Fields are set to 0/NULL if failed to determine (or not requested) */ |
1227 | uint16_t argv_len; |
1228 | char *argv0; |
1229 | USE_SELINUX(char *context;) |
1230 | /* Everything below must contain no ptrs to malloc'ed data: |
1231 | * it is memset(0) for each process in procps_scan() */ |
1232 | unsigned long vsz, rss; /* we round it to kbytes */ |
1233 | unsigned long stime, utime; |
1234 | unsigned long start_time; |
1235 | unsigned pid; |
1236 | unsigned ppid; |
1237 | unsigned pgid; |
1238 | unsigned sid; |
1239 | unsigned uid; |
1240 | unsigned gid; |
1241 | unsigned tty_major,tty_minor; |
1242 | #if ENABLE_FEATURE_TOPMEM |
1243 | unsigned long mapped_rw; |
1244 | unsigned long mapped_ro; |
1245 | unsigned long shared_clean; |
1246 | unsigned long shared_dirty; |
1247 | unsigned long private_clean; |
1248 | unsigned long private_dirty; |
1249 | unsigned long stack; |
1250 | #endif |
1251 | char state[4]; |
1252 | /* basename of executable in exec(2), read from /proc/N/stat |
1253 | * (if executable is symlink or script, it is NOT replaced |
1254 | * by link target or interpreter name) */ |
1255 | char comm[COMM_LEN]; |
1256 | /* user/group? - use passwd/group parsing functions */ |
1257 | #if ENABLE_FEATURE_TOP_SMP_PROCESS |
1258 | int last_seen_on_cpu; |
1259 | #endif |
1260 | } procps_status_t; |
1261 | enum { |
1262 | PSSCAN_PID = 1 << 0, |
1263 | PSSCAN_PPID = 1 << 1, |
1264 | PSSCAN_PGID = 1 << 2, |
1265 | PSSCAN_SID = 1 << 3, |
1266 | PSSCAN_UIDGID = 1 << 4, |
1267 | PSSCAN_COMM = 1 << 5, |
1268 | /* PSSCAN_CMD = 1 << 6, - use read_cmdline instead */ |
1269 | PSSCAN_ARGV0 = 1 << 7, |
1270 | /* PSSCAN_EXE = 1 << 8, - not implemented */ |
1271 | PSSCAN_STATE = 1 << 9, |
1272 | PSSCAN_VSZ = 1 << 10, |
1273 | PSSCAN_RSS = 1 << 11, |
1274 | PSSCAN_STIME = 1 << 12, |
1275 | PSSCAN_UTIME = 1 << 13, |
1276 | PSSCAN_TTY = 1 << 14, |
1277 | PSSCAN_SMAPS = (1 << 15) * ENABLE_FEATURE_TOPMEM, |
1278 | /* NB: used by find_pid_by_name(). Any applet using it |
1279 | * needs to be mentioned here. */ |
1280 | PSSCAN_ARGVN = (1 << 16) * (ENABLE_KILLALL |
1281 | || ENABLE_PGREP || ENABLE_PKILL |
1282 | || ENABLE_PIDOF |
1283 | || ENABLE_SESTATUS |
1284 | ), |
1285 | USE_SELINUX(PSSCAN_CONTEXT = 1 << 17,) |
1286 | PSSCAN_START_TIME = 1 << 18, |
1287 | PSSCAN_CPU = 1 << 19, |
1288 | /* These are all retrieved from proc/NN/stat in one go: */ |
1289 | PSSCAN_STAT = PSSCAN_PPID | PSSCAN_PGID | PSSCAN_SID |
1290 | /**/ | PSSCAN_COMM | PSSCAN_STATE |
1291 | /**/ | PSSCAN_VSZ | PSSCAN_RSS |
1292 | /**/ | PSSCAN_STIME | PSSCAN_UTIME | PSSCAN_START_TIME |
1293 | /**/ | PSSCAN_TTY |
1294 | #if ENABLE_FEATURE_TOP_SMP_PROCESS |
1295 | /**/ | PSSCAN_CPU |
1296 | #endif |
1297 | }; |
1298 | //procps_status_t* alloc_procps_scan(void) FAST_FUNC; |
1299 | void free_procps_scan(procps_status_t* sp) FAST_FUNC; |
1300 | procps_status_t* procps_scan(procps_status_t* sp, int flags) FAST_FUNC; |
1301 | /* Format cmdline (up to col chars) into char buf[col+1] */ |
1302 | /* Puts [comm] if cmdline is empty (-> process is a kernel thread) */ |
1303 | void read_cmdline(char *buf, int col, unsigned pid, const char *comm) FAST_FUNC; |
1304 | pid_t *find_pid_by_name(const char* procName) FAST_FUNC; |
1305 | pid_t *pidlist_reverse(pid_t *pidList) FAST_FUNC; |
1306 | |
1307 | |
1308 | extern const char bb_uuenc_tbl_base64[]; |
1309 | extern const char bb_uuenc_tbl_std[]; |
1310 | void bb_uuencode(char *store, const void *s, int length, const char *tbl) FAST_FUNC; |
1311 | |
1312 | typedef struct sha1_ctx_t { |
1313 | uint32_t count[2]; |
1314 | uint32_t hash[5]; |
1315 | uint32_t wbuf[16]; |
1316 | } sha1_ctx_t; |
1317 | void sha1_begin(sha1_ctx_t *ctx) FAST_FUNC; |
1318 | void sha1_hash(const void *data, size_t length, sha1_ctx_t *ctx) FAST_FUNC; |
1319 | void *sha1_end(void *resbuf, sha1_ctx_t *ctx) FAST_FUNC; |
1320 | |
1321 | typedef struct md5_ctx_t { |
1322 | uint32_t A; |
1323 | uint32_t B; |
1324 | uint32_t C; |
1325 | uint32_t D; |
1326 | uint64_t total; |
1327 | uint32_t buflen; |
1328 | char buffer[128]; |
1329 | } md5_ctx_t; |
1330 | void md5_begin(md5_ctx_t *ctx) FAST_FUNC; |
1331 | void md5_hash(const void *data, size_t length, md5_ctx_t *ctx) FAST_FUNC; |
1332 | void *md5_end(void *resbuf, md5_ctx_t *ctx) FAST_FUNC; |
1333 | |
1334 | uint32_t *crc32_filltable(uint32_t *tbl256, int endian) FAST_FUNC; |
1335 | |
1336 | typedef struct masks_labels_t { |
1337 | const char *labels; |
1338 | const int masks[]; |
1339 | } masks_labels_t; |
1340 | int print_flags_separated(const int *masks, const char *labels, |
1341 | int flags, const char *separator) FAST_FUNC; |
1342 | int print_flags(const masks_labels_t *ml, int flags) FAST_FUNC; |
1343 | |
1344 | |
1345 | extern const char *applet_name; |
1346 | /* "BusyBox vN.N.N (timestamp or extra_version)" */ |
1347 | extern const char bb_banner[]; |
1348 | extern const char bb_msg_memory_exhausted[]; |
1349 | extern const char bb_msg_invalid_date[]; |
1350 | extern const char bb_msg_read_error[]; |
1351 | extern const char bb_msg_write_error[]; |
1352 | extern const char bb_msg_unknown[]; |
1353 | extern const char bb_msg_can_not_create_raw_socket[]; |
1354 | extern const char bb_msg_perm_denied_are_you_root[]; |
1355 | extern const char bb_msg_requires_arg[]; |
1356 | extern const char bb_msg_invalid_arg[]; |
1357 | extern const char bb_msg_standard_input[]; |
1358 | extern const char bb_msg_standard_output[]; |
1359 | |
1360 | extern const char bb_str_default[]; |
1361 | /* NB: (bb_hexdigits_upcase[i] | 0x20) -> lowercase hex digit */ |
1362 | extern const char bb_hexdigits_upcase[]; |
1363 | |
1364 | extern const char bb_path_mtab_file[]; |
1365 | extern const char bb_path_passwd_file[]; |
1366 | extern const char bb_path_shadow_file[]; |
1367 | extern const char bb_path_gshadow_file[]; |
1368 | extern const char bb_path_group_file[]; |
1369 | extern const char bb_path_motd_file[]; |
1370 | extern const char bb_path_wtmp_file[]; |
1371 | extern const char bb_dev_null[]; |
1372 | extern const char bb_busybox_exec_path[]; |
1373 | /* util-linux manpage says /sbin:/bin:/usr/sbin:/usr/bin, |
1374 | * but I want to save a few bytes here */ |
1375 | extern const char bb_PATH_root_path[]; /* "PATH=/sbin:/usr/sbin:/bin:/usr/bin" */ |
1376 | #define bb_default_root_path (bb_PATH_root_path + sizeof("PATH")) |
1377 | #define bb_default_path (bb_PATH_root_path + sizeof("PATH=/sbin:/usr/sbin")) |
1378 | |
1379 | extern const int const_int_0; |
1380 | extern const int const_int_1; |
1381 | |
1382 | |
1383 | #ifndef BUFSIZ |
1384 | #define BUFSIZ 4096 |
1385 | #endif |
1386 | /* Providing hard guarantee on minimum size (think of BUFSIZ == 128) */ |
1387 | enum { COMMON_BUFSIZE = (BUFSIZ >= 256*sizeof(void*) ? BUFSIZ+1 : 256*sizeof(void*)) }; |
1388 | extern char bb_common_bufsiz1[COMMON_BUFSIZE]; |
1389 | /* This struct is deliberately not defined. */ |
1390 | /* See docs/keep_data_small.txt */ |
1391 | struct globals; |
1392 | /* '*const' ptr makes gcc optimize code much better. |
1393 | * Magic prevents ptr_to_globals from going into rodata. |
1394 | * If you want to assign a value, use SET_PTR_TO_GLOBALS(x) */ |
1395 | extern struct globals *const ptr_to_globals; |
1396 | /* At least gcc 3.4.6 on mipsel system needs optimization barrier */ |
1397 | #define barrier() __asm__ __volatile__("":::"memory") |
1398 | #define SET_PTR_TO_GLOBALS(x) do { \ |
1399 | (*(struct globals**)&ptr_to_globals) = (x); \ |
1400 | barrier(); \ |
1401 | } while (0) |
1402 | |
1403 | /* You can change LIBBB_DEFAULT_LOGIN_SHELL, but don't use it, |
1404 | * use bb_default_login_shell and following defines. |
1405 | * If you change LIBBB_DEFAULT_LOGIN_SHELL, |
1406 | * don't forget to change increment constant. */ |
1407 | #define LIBBB_DEFAULT_LOGIN_SHELL "-/bin/sh" |
1408 | extern const char bb_default_login_shell[]; |
1409 | /* "/bin/sh" */ |
1410 | #define DEFAULT_SHELL (bb_default_login_shell+1) |
1411 | /* "sh" */ |
1412 | #define DEFAULT_SHELL_SHORT_NAME (bb_default_login_shell+6) |
1413 | |
1414 | #if ENABLE_FEATURE_DEVFS |
1415 | # define CURRENT_VC "/dev/vc/0" |
1416 | # define VC_1 "/dev/vc/1" |
1417 | # define VC_2 "/dev/vc/2" |
1418 | # define VC_3 "/dev/vc/3" |
1419 | # define VC_4 "/dev/vc/4" |
1420 | # define VC_5 "/dev/vc/5" |
1421 | #if defined(__sh__) || defined(__H8300H__) || defined(__H8300S__) |
1422 | /* Yes, this sucks, but both SH (including sh64) and H8 have a SCI(F) for their |
1423 | respective serial ports .. as such, we can't use the common device paths for |
1424 | these. -- PFM */ |
1425 | # define SC_0 "/dev/ttsc/0" |
1426 | # define SC_1 "/dev/ttsc/1" |
1427 | # define SC_FORMAT "/dev/ttsc/%d" |
1428 | #else |
1429 | # define SC_0 "/dev/tts/0" |
1430 | # define SC_1 "/dev/tts/1" |
1431 | # define SC_FORMAT "/dev/tts/%d" |
1432 | #endif |
1433 | # define VC_FORMAT "/dev/vc/%d" |
1434 | # define LOOP_FORMAT "/dev/loop/%d" |
1435 | # define LOOP_NAMESIZE (sizeof("/dev/loop/") + sizeof(int)*3 + 1) |
1436 | # define LOOP_NAME "/dev/loop/" |
1437 | # define FB_0 "/dev/fb/0" |
1438 | #else |
1439 | # define CURRENT_VC "/dev/tty0" |
1440 | # define VC_1 "/dev/tty1" |
1441 | # define VC_2 "/dev/tty2" |
1442 | # define VC_3 "/dev/tty3" |
1443 | # define VC_4 "/dev/tty4" |
1444 | # define VC_5 "/dev/tty5" |
1445 | #if defined(__sh__) || defined(__H8300H__) || defined(__H8300S__) |
1446 | # define SC_0 "/dev/ttySC0" |
1447 | # define SC_1 "/dev/ttySC1" |
1448 | # define SC_FORMAT "/dev/ttySC%d" |
1449 | #else |
1450 | # define SC_0 "/dev/ttyS0" |
1451 | # define SC_1 "/dev/ttyS1" |
1452 | # define SC_FORMAT "/dev/ttyS%d" |
1453 | #endif |
1454 | # define VC_FORMAT "/dev/tty%d" |
1455 | # define LOOP_FORMAT "/dev/loop%d" |
1456 | # define LOOP_NAMESIZE (sizeof("/dev/loop") + sizeof(int)*3 + 1) |
1457 | # define LOOP_NAME "/dev/loop" |
1458 | # define FB_0 "/dev/fb0" |
1459 | #endif |
1460 | |
1461 | /* The following devices are the same on devfs and non-devfs systems. */ |
1462 | #define CURRENT_TTY "/dev/tty" |
1463 | #define DEV_CONSOLE "/dev/console" |
1464 | |
1465 | |
1466 | #ifndef RB_POWER_OFF |
1467 | /* Stop system and switch power off if possible. */ |
1468 | #define RB_POWER_OFF 0x4321fedc |
1469 | #endif |
1470 | |
1471 | /* Make sure we call functions instead of macros. */ |
1472 | #undef isalnum |
1473 | #undef isalpha |
1474 | #undef isascii |
1475 | #undef isblank |
1476 | #undef iscntrl |
1477 | #undef isgraph |
1478 | #undef islower |
1479 | #undef isprint |
1480 | #undef ispunct |
1481 | #undef isspace |
1482 | #undef isupper |
1483 | #undef isxdigit |
1484 | |
1485 | /* This one is more efficient - we save ~400 bytes */ |
1486 | #undef isdigit |
1487 | #define isdigit(a) ((unsigned)((a) - '0') <= 9) |
1488 | |
1489 | #define ARRAY_SIZE(x) ((unsigned)(sizeof(x) / sizeof((x)[0]))) |
1490 | |
1491 | |
1492 | #if __GNUC_PREREQ(4,1) |
1493 | # pragma GCC visibility pop |
1494 | #endif |
1495 | |
1496 | |
1497 | #endif /* __LIBBUSYBOX_H__ */ |