Annotation of /trunk/mkinitrd-magellan/busybox/include/libbb.h
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Wed Sep 7 18:39:43 2011 UTC (12 years, 8 months ago) by niro
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Wed Sep 7 18:39:43 2011 UTC (12 years, 8 months ago) by niro
File MIME type: text/plain
File size: 68046 byte(s)
-fixed build against linux-3.0
1 | niro | 532 | /* 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 | niro | 984 | #ifndef LIBBB_H |
11 | #define LIBBB_H 1 | ||
12 | niro | 532 | |
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 | niro | 1123 | #include <stdint.h> |
24 | niro | 532 | #include <stdio.h> |
25 | #include <stdlib.h> | ||
26 | #include <stdarg.h> | ||
27 | niro | 816 | #include <stddef.h> |
28 | niro | 532 | #include <string.h> |
29 | niro | 816 | #include <sys/poll.h> |
30 | niro | 532 | #include <sys/ioctl.h> |
31 | #include <sys/mman.h> | ||
32 | #include <sys/socket.h> | ||
33 | #include <sys/stat.h> | ||
34 | #include <sys/time.h> | ||
35 | #include <sys/types.h> | ||
36 | #include <sys/wait.h> | ||
37 | #include <termios.h> | ||
38 | #include <time.h> | ||
39 | #include <unistd.h> | ||
40 | niro | 816 | /* Try to pull in PATH_MAX */ |
41 | #include <limits.h> | ||
42 | #include <sys/param.h> | ||
43 | #ifdef HAVE_MNTENT_H | ||
44 | #include <mntent.h> | ||
45 | #endif | ||
46 | #ifdef HAVE_SYS_STATFS_H | ||
47 | #include <sys/statfs.h> | ||
48 | #endif | ||
49 | niro | 532 | #if ENABLE_SELINUX |
50 | #include <selinux/selinux.h> | ||
51 | niro | 816 | #include <selinux/context.h> |
52 | #include <selinux/flask.h> | ||
53 | #include <selinux/av_permissions.h> | ||
54 | niro | 532 | #endif |
55 | #if ENABLE_LOCALE_SUPPORT | ||
56 | niro | 984 | # include <locale.h> |
57 | niro | 532 | #else |
58 | niro | 984 | # define setlocale(x,y) ((void)0) |
59 | niro | 532 | #endif |
60 | niro | 816 | #ifdef DMALLOC |
61 | niro | 984 | # include <dmalloc.h> |
62 | niro | 816 | #endif |
63 | #include <pwd.h> | ||
64 | #include <grp.h> | ||
65 | niro | 532 | #if ENABLE_FEATURE_SHADOWPASSWDS |
66 | niro | 984 | # if !ENABLE_USE_BB_SHADOW |
67 | /* If using busybox's shadow implementation, do not include the shadow.h | ||
68 | * header as the toolchain may not provide it at all. | ||
69 | */ | ||
70 | # include <shadow.h> | ||
71 | # endif | ||
72 | niro | 532 | #endif |
73 | niro | 1123 | #if defined __FreeBSD__ |
74 | # include <netinet/in.h> | ||
75 | # include <arpa/inet.h> | ||
76 | #elif defined __APPLE__ | ||
77 | # include <netinet/in.h> | ||
78 | #else | ||
79 | # include <arpa/inet.h> | ||
80 | # if !defined(__socklen_t_defined) && !defined(_SOCKLEN_T_DECLARED) | ||
81 | /* We #define socklen_t *after* includes, otherwise we get | ||
82 | * typedef redefinition errors from system headers | ||
83 | * (in case "is it defined already" detection above failed) | ||
84 | */ | ||
85 | # define socklen_t bb_socklen_t | ||
86 | typedef unsigned socklen_t; | ||
87 | # endif | ||
88 | #endif | ||
89 | niro | 532 | |
90 | niro | 1123 | |
91 | niro | 816 | /* Some libc's forget to declare these, do it ourself */ |
92 | |||
93 | extern char **environ; | ||
94 | #if defined(__GLIBC__) && __GLIBC__ < 2 | ||
95 | int vdprintf(int d, const char *format, va_list ap); | ||
96 | niro | 532 | #endif |
97 | niro | 816 | /* klogctl is in libc's klog.h, but we cheat and not #include that */ |
98 | int klogctl(int type, char *b, int len); | ||
99 | /* This is declared here rather than #including <libgen.h> in order to avoid | ||
100 | * confusing the two versions of basename. See the dirname/basename man page | ||
101 | * for details. */ | ||
102 | niro | 984 | #if !defined __FreeBSD__ |
103 | niro | 816 | char *dirname(char *path); |
104 | niro | 984 | #endif |
105 | niro | 1520 | |
106 | niro | 1123 | #ifndef PATH_MAX |
107 | # define PATH_MAX 256 | ||
108 | #endif | ||
109 | #ifndef BUFSIZ | ||
110 | # define BUFSIZ 4096 | ||
111 | #endif | ||
112 | niro | 532 | |
113 | niro | 816 | |
114 | /* Make all declarations hidden (-fvisibility flag only affects definitions) */ | ||
115 | /* (don't include system headers after this until corresponding pop!) */ | ||
116 | niro | 984 | PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN |
117 | niro | 816 | |
118 | |||
119 | #if ENABLE_USE_BB_PWD_GRP | ||
120 | # include "pwd_.h" | ||
121 | # include "grp_.h" | ||
122 | #endif | ||
123 | #if ENABLE_FEATURE_SHADOWPASSWDS | ||
124 | # if ENABLE_USE_BB_SHADOW | ||
125 | # include "shadow_.h" | ||
126 | # endif | ||
127 | #endif | ||
128 | |||
129 | /* Tested to work correctly with all int types (IIRC :]) */ | ||
130 | niro | 532 | #define MAXINT(T) (T)( \ |
131 | ((T)-1) > 0 \ | ||
132 | ? (T)-1 \ | ||
133 | : (T)~((T)1 << (sizeof(T)*8-1)) \ | ||
134 | ) | ||
135 | |||
136 | #define MININT(T) (T)( \ | ||
137 | ((T)-1) > 0 \ | ||
138 | ? (T)0 \ | ||
139 | : ((T)1 << (sizeof(T)*8-1)) \ | ||
140 | ) | ||
141 | |||
142 | /* Large file support */ | ||
143 | niro | 816 | /* Note that CONFIG_LFS=y forces bbox to be built with all common ops |
144 | niro | 532 | * (stat, lseek etc) mapped to "largefile" variants by libc. |
145 | * Practically it means that open() automatically has O_LARGEFILE added | ||
146 | * and all filesize/file_offset parameters and struct members are "large" | ||
147 | * (in today's world - signed 64bit). For full support of large files, | ||
148 | * we need a few helper #defines (below) and careful use of off_t | ||
149 | * instead of int/ssize_t. No lseek64(), O_LARGEFILE etc necessary */ | ||
150 | #if ENABLE_LFS | ||
151 | /* CONFIG_LFS is on */ | ||
152 | # if ULONG_MAX > 0xffffffff | ||
153 | /* "long" is long enough on this system */ | ||
154 | niro | 984 | typedef unsigned long uoff_t; |
155 | niro | 532 | # define XATOOFF(a) xatoul_range(a, 0, LONG_MAX) |
156 | /* usage: sz = BB_STRTOOFF(s, NULL, 10); if (errno || sz < 0) die(); */ | ||
157 | # define BB_STRTOOFF bb_strtoul | ||
158 | # define STRTOOFF strtoul | ||
159 | /* usage: printf("size: %"OFF_FMT"d (%"OFF_FMT"x)\n", sz, sz); */ | ||
160 | # define OFF_FMT "l" | ||
161 | # else | ||
162 | /* "long" is too short, need "long long" */ | ||
163 | niro | 984 | typedef unsigned long long uoff_t; |
164 | niro | 532 | # define XATOOFF(a) xatoull_range(a, 0, LLONG_MAX) |
165 | # define BB_STRTOOFF bb_strtoull | ||
166 | # define STRTOOFF strtoull | ||
167 | # define OFF_FMT "ll" | ||
168 | # endif | ||
169 | #else | ||
170 | /* CONFIG_LFS is off */ | ||
171 | # if UINT_MAX == 0xffffffff | ||
172 | /* While sizeof(off_t) == sizeof(int), off_t is typedef'ed to long anyway. | ||
173 | * gcc will throw warnings on printf("%d", off_t). Crap... */ | ||
174 | niro | 984 | typedef unsigned long uoff_t; |
175 | niro | 532 | # define XATOOFF(a) xatoi_u(a) |
176 | # define BB_STRTOOFF bb_strtou | ||
177 | # define STRTOOFF strtol | ||
178 | # define OFF_FMT "l" | ||
179 | # else | ||
180 | niro | 984 | typedef unsigned long uoff_t; |
181 | niro | 532 | # define XATOOFF(a) xatoul_range(a, 0, LONG_MAX) |
182 | # define BB_STRTOOFF bb_strtoul | ||
183 | # define STRTOOFF strtol | ||
184 | # define OFF_FMT "l" | ||
185 | # endif | ||
186 | #endif | ||
187 | /* scary. better ideas? (but do *test* them first!) */ | ||
188 | #define OFF_T_MAX ((off_t)~((off_t)1 << (sizeof(off_t)*8-1))) | ||
189 | |||
190 | /* Some useful definitions */ | ||
191 | #undef FALSE | ||
192 | #define FALSE ((int) 0) | ||
193 | #undef TRUE | ||
194 | #define TRUE ((int) 1) | ||
195 | #undef SKIP | ||
196 | #define SKIP ((int) 2) | ||
197 | |||
198 | /* for mtab.c */ | ||
199 | #define MTAB_GETMOUNTPT '1' | ||
200 | #define MTAB_GETDEVICE '2' | ||
201 | |||
202 | #define BUF_SIZE 8192 | ||
203 | #define EXPAND_ALLOC 1024 | ||
204 | |||
205 | /* Macros for min/max. */ | ||
206 | #ifndef MIN | ||
207 | #define MIN(a,b) (((a)<(b))?(a):(b)) | ||
208 | #endif | ||
209 | |||
210 | #ifndef MAX | ||
211 | #define MAX(a,b) (((a)>(b))?(a):(b)) | ||
212 | #endif | ||
213 | |||
214 | /* buffer allocation schemes */ | ||
215 | #if ENABLE_FEATURE_BUFFERS_GO_ON_STACK | ||
216 | niro | 816 | #define RESERVE_CONFIG_BUFFER(buffer,len) char buffer[len] |
217 | niro | 532 | #define RESERVE_CONFIG_UBUFFER(buffer,len) unsigned char buffer[len] |
218 | #define RELEASE_CONFIG_BUFFER(buffer) ((void)0) | ||
219 | #else | ||
220 | #if ENABLE_FEATURE_BUFFERS_GO_IN_BSS | ||
221 | #define RESERVE_CONFIG_BUFFER(buffer,len) static char buffer[len] | ||
222 | #define RESERVE_CONFIG_UBUFFER(buffer,len) static unsigned char buffer[len] | ||
223 | #define RELEASE_CONFIG_BUFFER(buffer) ((void)0) | ||
224 | #else | ||
225 | niro | 816 | #define RESERVE_CONFIG_BUFFER(buffer,len) char *buffer = xmalloc(len) |
226 | #define RESERVE_CONFIG_UBUFFER(buffer,len) unsigned char *buffer = xmalloc(len) | ||
227 | #define RELEASE_CONFIG_BUFFER(buffer) free(buffer) | ||
228 | niro | 532 | #endif |
229 | #endif | ||
230 | |||
231 | niro | 816 | #if defined(__GLIBC__) |
232 | /* glibc uses __errno_location() to get a ptr to errno */ | ||
233 | /* We can just memorize it once - no multithreading in busybox :) */ | ||
234 | extern int *const bb_errno; | ||
235 | #undef errno | ||
236 | #define errno (*bb_errno) | ||
237 | #endif | ||
238 | niro | 532 | |
239 | niro | 816 | unsigned long long monotonic_ns(void) FAST_FUNC; |
240 | unsigned long long monotonic_us(void) FAST_FUNC; | ||
241 | niro | 984 | unsigned long long monotonic_ms(void) FAST_FUNC; |
242 | niro | 816 | unsigned monotonic_sec(void) FAST_FUNC; |
243 | |||
244 | extern void chomp(char *s) FAST_FUNC; | ||
245 | extern void trim(char *s) FAST_FUNC; | ||
246 | extern char *skip_whitespace(const char *) FAST_FUNC; | ||
247 | extern char *skip_non_whitespace(const char *) FAST_FUNC; | ||
248 | niro | 1123 | extern char *skip_dev_pfx(const char *tty_name) FAST_FUNC; |
249 | |||
250 | niro | 816 | extern char *strrstr(const char *haystack, const char *needle) FAST_FUNC; |
251 | |||
252 | //TODO: supply a pointer to char[11] buffer (avoid statics)? | ||
253 | extern const char *bb_mode_string(mode_t mode) FAST_FUNC; | ||
254 | extern int is_directory(const char *name, int followLinks, struct stat *statBuf) FAST_FUNC; | ||
255 | enum { /* DO NOT CHANGE THESE VALUES! cp.c, mv.c, install.c depend on them. */ | ||
256 | niro | 984 | FILEUTILS_PRESERVE_STATUS = 1 << 0, /* -p */ |
257 | FILEUTILS_DEREFERENCE = 1 << 1, /* !-d */ | ||
258 | FILEUTILS_RECUR = 1 << 2, /* -R */ | ||
259 | FILEUTILS_FORCE = 1 << 3, /* -f */ | ||
260 | FILEUTILS_INTERACTIVE = 1 << 4, /* -i */ | ||
261 | FILEUTILS_MAKE_HARDLINK = 1 << 5, /* -l */ | ||
262 | FILEUTILS_MAKE_SOFTLINK = 1 << 6, /* -s */ | ||
263 | FILEUTILS_DEREF_SOFTLINK = 1 << 7, /* -L */ | ||
264 | FILEUTILS_DEREFERENCE_L0 = 1 << 8, /* -H */ | ||
265 | niro | 816 | #if ENABLE_SELINUX |
266 | niro | 984 | FILEUTILS_PRESERVE_SECURITY_CONTEXT = 1 << 9, /* -c */ |
267 | FILEUTILS_SET_SECURITY_CONTEXT = 1 << 10, | ||
268 | niro | 532 | #endif |
269 | }; | ||
270 | niro | 984 | #define FILEUTILS_CP_OPTSTR "pdRfilsLH" IF_SELINUX("c") |
271 | niro | 816 | extern int remove_file(const char *path, int flags) FAST_FUNC; |
272 | /* NB: without FILEUTILS_RECUR in flags, it will basically "cat" | ||
273 | * the source, not copy (unless "source" is a directory). | ||
274 | * This makes "cp /dev/null file" and "install /dev/null file" (!!!) | ||
275 | * work coreutils-compatibly. */ | ||
276 | extern int copy_file(const char *source, const char *dest, int flags) FAST_FUNC; | ||
277 | niro | 532 | |
278 | niro | 816 | enum { |
279 | ACTION_RECURSE = (1 << 0), | ||
280 | ACTION_FOLLOWLINKS = (1 << 1), | ||
281 | ACTION_FOLLOWLINKS_L0 = (1 << 2), | ||
282 | ACTION_DEPTHFIRST = (1 << 3), | ||
283 | /*ACTION_REVERSE = (1 << 4), - unused */ | ||
284 | ACTION_QUIET = (1 << 5), | ||
285 | niro | 984 | ACTION_DANGLING_OK = (1 << 6), |
286 | niro | 816 | }; |
287 | niro | 984 | typedef uint8_t recurse_flags_t; |
288 | niro | 816 | extern int recursive_action(const char *fileName, unsigned flags, |
289 | int FAST_FUNC (*fileAction)(const char *fileName, struct stat* statbuf, void* userData, int depth), | ||
290 | int FAST_FUNC (*dirAction)(const char *fileName, struct stat* statbuf, void* userData, int depth), | ||
291 | void* userData, unsigned depth) FAST_FUNC; | ||
292 | extern int device_open(const char *device, int mode) FAST_FUNC; | ||
293 | enum { GETPTY_BUFSIZE = 16 }; /* more than enough for "/dev/ttyXXX" */ | ||
294 | extern int xgetpty(char *line) FAST_FUNC; | ||
295 | extern int get_console_fd_or_die(void) FAST_FUNC; | ||
296 | extern void console_make_active(int fd, const int vt_num) FAST_FUNC; | ||
297 | extern char *find_block_device(const char *path) FAST_FUNC; | ||
298 | niro | 532 | /* bb_copyfd_XX print read/write errors and return -1 if they occur */ |
299 | niro | 816 | extern off_t bb_copyfd_eof(int fd1, int fd2) FAST_FUNC; |
300 | extern off_t bb_copyfd_size(int fd1, int fd2, off_t size) FAST_FUNC; | ||
301 | extern void bb_copyfd_exact_size(int fd1, int fd2, off_t size) FAST_FUNC; | ||
302 | niro | 532 | /* "short" copy can be detected by return value < size */ |
303 | /* this helper yells "short read!" if param is not -1 */ | ||
304 | niro | 816 | extern void complain_copyfd_and_die(off_t sz) NORETURN FAST_FUNC; |
305 | extern char bb_process_escape_sequence(const char **ptr) FAST_FUNC; | ||
306 | /* xxxx_strip version can modify its parameter: | ||
307 | * "/" -> "/" | ||
308 | * "abc" -> "abc" | ||
309 | * "abc/def" -> "def" | ||
310 | * "abc/def/" -> "def" !! | ||
311 | */ | ||
312 | extern char *bb_get_last_path_component_strip(char *path) FAST_FUNC; | ||
313 | /* "abc/def/" -> "" and it never modifies 'path' */ | ||
314 | extern char *bb_get_last_path_component_nostrip(const char *path) FAST_FUNC; | ||
315 | niro | 532 | |
316 | niro | 816 | int ndelay_on(int fd) FAST_FUNC; |
317 | int ndelay_off(int fd) FAST_FUNC; | ||
318 | int close_on_exec_on(int fd) FAST_FUNC; | ||
319 | void xdup2(int, int) FAST_FUNC; | ||
320 | void xmove_fd(int, int) FAST_FUNC; | ||
321 | niro | 532 | |
322 | |||
323 | niro | 816 | DIR *xopendir(const char *path) FAST_FUNC; |
324 | DIR *warn_opendir(const char *path) FAST_FUNC; | ||
325 | niro | 532 | |
326 | niro | 1123 | char *xmalloc_realpath(const char *path) FAST_FUNC RETURNS_MALLOC; |
327 | niro | 984 | char *xmalloc_readlink(const char *path) FAST_FUNC RETURNS_MALLOC; |
328 | char *xmalloc_readlink_or_warn(const char *path) FAST_FUNC RETURNS_MALLOC; | ||
329 | /* !RETURNS_MALLOC: it's a realloc-like function */ | ||
330 | niro | 816 | char *xrealloc_getcwd_or_warn(char *cwd) FAST_FUNC; |
331 | niro | 532 | |
332 | niro | 984 | char *xmalloc_follow_symlinks(const char *path) FAST_FUNC RETURNS_MALLOC; |
333 | niro | 532 | |
334 | niro | 816 | |
335 | enum { | ||
336 | /* bb_signals(BB_FATAL_SIGS, handler) catches all signals which | ||
337 | * otherwise would kill us, except for those resulting from bugs: | ||
338 | * SIGSEGV, SIGILL, SIGFPE. | ||
339 | * Other fatal signals not included (TODO?): | ||
340 | * SIGBUS Bus error (bad memory access) | ||
341 | * SIGPOLL Pollable event. Synonym of SIGIO | ||
342 | * SIGPROF Profiling timer expired | ||
343 | * SIGSYS Bad argument to routine | ||
344 | * SIGTRAP Trace/breakpoint trap | ||
345 | * | ||
346 | * The only known arch with some of these sigs not fitting | ||
347 | * into 32 bits is parisc (SIGXCPU=33, SIGXFSZ=34, SIGSTKFLT=36). | ||
348 | * Dance around with long long to guard against that... | ||
349 | */ | ||
350 | BB_FATAL_SIGS = (int)(0 | ||
351 | + (1LL << SIGHUP) | ||
352 | + (1LL << SIGINT) | ||
353 | + (1LL << SIGTERM) | ||
354 | + (1LL << SIGPIPE) // Write to pipe with no readers | ||
355 | + (1LL << SIGQUIT) // Quit from keyboard | ||
356 | + (1LL << SIGABRT) // Abort signal from abort(3) | ||
357 | + (1LL << SIGALRM) // Timer signal from alarm(2) | ||
358 | + (1LL << SIGVTALRM) // Virtual alarm clock | ||
359 | + (1LL << SIGXCPU) // CPU time limit exceeded | ||
360 | + (1LL << SIGXFSZ) // File size limit exceeded | ||
361 | + (1LL << SIGUSR1) // Yes kids, these are also fatal! | ||
362 | + (1LL << SIGUSR2) | ||
363 | + 0), | ||
364 | }; | ||
365 | void bb_signals(int sigs, void (*f)(int)) FAST_FUNC; | ||
366 | /* Unlike signal() and bb_signals, sets handler with sigaction() | ||
367 | * and in a way that while signal handler is run, no other signals | ||
368 | niro | 984 | * will be blocked; syscalls will not be restarted: */ |
369 | void bb_signals_recursive_norestart(int sigs, void (*f)(int)) FAST_FUNC; | ||
370 | niro | 816 | /* syscalls like read() will be interrupted with EINTR: */ |
371 | void signal_no_SA_RESTART_empty_mask(int sig, void (*handler)(int)) FAST_FUNC; | ||
372 | /* syscalls like read() won't be interrupted (though select/poll will be): */ | ||
373 | void signal_SA_RESTART_empty_mask(int sig, void (*handler)(int)) FAST_FUNC; | ||
374 | void wait_for_any_sig(void) FAST_FUNC; | ||
375 | void kill_myself_with_sig(int sig) NORETURN FAST_FUNC; | ||
376 | void sig_block(int sig) FAST_FUNC; | ||
377 | void sig_unblock(int sig) FAST_FUNC; | ||
378 | /* Will do sigaction(signum, act, NULL): */ | ||
379 | int sigaction_set(int sig, const struct sigaction *act) FAST_FUNC; | ||
380 | /* SIG_BLOCK/SIG_UNBLOCK all signals: */ | ||
381 | int sigprocmask_allsigs(int how) FAST_FUNC; | ||
382 | /* Standard handler which just records signo */ | ||
383 | extern smallint bb_got_signal; | ||
384 | void record_signo(int signo); /* not FAST_FUNC! */ | ||
385 | |||
386 | |||
387 | void xsetgid(gid_t gid) FAST_FUNC; | ||
388 | void xsetuid(uid_t uid) FAST_FUNC; | ||
389 | void xchdir(const char *path) FAST_FUNC; | ||
390 | void xchroot(const char *path) FAST_FUNC; | ||
391 | void xsetenv(const char *key, const char *value) FAST_FUNC; | ||
392 | niro | 984 | void bb_unsetenv(const char *key) FAST_FUNC; |
393 | niro | 1123 | void bb_unsetenv_and_free(char *key) FAST_FUNC; |
394 | niro | 816 | void xunlink(const char *pathname) FAST_FUNC; |
395 | void xstat(const char *pathname, struct stat *buf) FAST_FUNC; | ||
396 | niro | 984 | int xopen(const char *pathname, int flags) FAST_FUNC; |
397 | int xopen_nonblocking(const char *pathname) FAST_FUNC; | ||
398 | niro | 816 | int xopen3(const char *pathname, int flags, int mode) FAST_FUNC; |
399 | int open_or_warn(const char *pathname, int flags) FAST_FUNC; | ||
400 | int open3_or_warn(const char *pathname, int flags, int mode) FAST_FUNC; | ||
401 | int open_or_warn_stdin(const char *pathname) FAST_FUNC; | ||
402 | niro | 1179 | int xopen_stdin(const char *pathname) FAST_FUNC; |
403 | niro | 816 | void xrename(const char *oldpath, const char *newpath) FAST_FUNC; |
404 | int rename_or_warn(const char *oldpath, const char *newpath) FAST_FUNC; | ||
405 | off_t xlseek(int fd, off_t offset, int whence) FAST_FUNC; | ||
406 | off_t fdlength(int fd) FAST_FUNC; | ||
407 | |||
408 | niro | 1123 | uoff_t FAST_FUNC get_volume_size_in_bytes(int fd, |
409 | const char *override, | ||
410 | unsigned override_units, | ||
411 | int extend); | ||
412 | |||
413 | niro | 816 | void xpipe(int filedes[2]) FAST_FUNC; |
414 | /* In this form code with pipes is much more readable */ | ||
415 | struct fd_pair { int rd; int wr; }; | ||
416 | #define piped_pair(pair) pipe(&((pair).rd)) | ||
417 | #define xpiped_pair(pair) xpipe(&((pair).rd)) | ||
418 | |||
419 | /* Useful for having small structure members/global variables */ | ||
420 | typedef int8_t socktype_t; | ||
421 | typedef int8_t family_t; | ||
422 | struct BUG_too_small { | ||
423 | char BUG_socktype_t_too_small[(0 | ||
424 | | SOCK_STREAM | ||
425 | | SOCK_DGRAM | ||
426 | | SOCK_RDM | ||
427 | | SOCK_SEQPACKET | ||
428 | | SOCK_RAW | ||
429 | ) <= 127 ? 1 : -1]; | ||
430 | char BUG_family_t_too_small[(0 | ||
431 | | AF_UNSPEC | ||
432 | | AF_INET | ||
433 | | AF_INET6 | ||
434 | | AF_UNIX | ||
435 | #ifdef AF_PACKET | ||
436 | | AF_PACKET | ||
437 | #endif | ||
438 | #ifdef AF_NETLINK | ||
439 | | AF_NETLINK | ||
440 | #endif | ||
441 | /* | AF_DECnet */ | ||
442 | /* | AF_IPX */ | ||
443 | ) <= 127 ? 1 : -1]; | ||
444 | }; | ||
445 | |||
446 | |||
447 | niro | 984 | void parse_datestr(const char *date_str, struct tm *ptm) FAST_FUNC; |
448 | time_t validate_tm_time(const char *date_str, struct tm *ptm) FAST_FUNC; | ||
449 | |||
450 | |||
451 | niro | 816 | int xsocket(int domain, int type, int protocol) FAST_FUNC; |
452 | void xbind(int sockfd, struct sockaddr *my_addr, socklen_t addrlen) FAST_FUNC; | ||
453 | void xlisten(int s, int backlog) FAST_FUNC; | ||
454 | void xconnect(int s, const struct sockaddr *s_addr, socklen_t addrlen) FAST_FUNC; | ||
455 | ssize_t xsendto(int s, const void *buf, size_t len, const struct sockaddr *to, | ||
456 | socklen_t tolen) FAST_FUNC; | ||
457 | /* SO_REUSEADDR allows a server to rebind to an address that is already | ||
458 | * "in use" by old connections to e.g. previous server instance which is | ||
459 | * killed or crashed. Without it bind will fail until all such connections | ||
460 | * time out. Linux does not allow multiple live binds on same ip:port | ||
461 | * regardless of SO_REUSEADDR (unlike some other flavors of Unix). | ||
462 | * Turn it on before you call bind(). */ | ||
463 | void setsockopt_reuseaddr(int fd) FAST_FUNC; /* On Linux this never fails. */ | ||
464 | int setsockopt_broadcast(int fd) FAST_FUNC; | ||
465 | int setsockopt_bindtodevice(int fd, const char *iface) FAST_FUNC; | ||
466 | /* NB: returns port in host byte order */ | ||
467 | unsigned bb_lookup_port(const char *port, const char *protocol, unsigned default_port) FAST_FUNC; | ||
468 | niro | 532 | typedef struct len_and_sockaddr { |
469 | socklen_t len; | ||
470 | union { | ||
471 | struct sockaddr sa; | ||
472 | struct sockaddr_in sin; | ||
473 | #if ENABLE_FEATURE_IPV6 | ||
474 | struct sockaddr_in6 sin6; | ||
475 | #endif | ||
476 | niro | 816 | } u; |
477 | niro | 532 | } len_and_sockaddr; |
478 | niro | 816 | enum { |
479 | LSA_LEN_SIZE = offsetof(len_and_sockaddr, u), | ||
480 | LSA_SIZEOF_SA = sizeof( | ||
481 | union { | ||
482 | struct sockaddr sa; | ||
483 | struct sockaddr_in sin; | ||
484 | #if ENABLE_FEATURE_IPV6 | ||
485 | struct sockaddr_in6 sin6; | ||
486 | #endif | ||
487 | } | ||
488 | ) | ||
489 | }; | ||
490 | /* Create stream socket, and allocate suitable lsa. | ||
491 | * (lsa of correct size and lsa->sa.sa_family (AF_INET/AF_INET6)) | ||
492 | * af == AF_UNSPEC will result in trying to create IPv6 socket, | ||
493 | niro | 984 | * and if kernel doesn't support it, fall back to IPv4. |
494 | * This is useful if you plan to bind to resulting local lsa. | ||
495 | niro | 816 | */ |
496 | #if ENABLE_FEATURE_IPV6 | ||
497 | int xsocket_type(len_and_sockaddr **lsap, int af, int sock_type) FAST_FUNC; | ||
498 | #else | ||
499 | int xsocket_type(len_and_sockaddr **lsap, int sock_type) FAST_FUNC; | ||
500 | #define xsocket_type(lsap, af, sock_type) xsocket_type((lsap), (sock_type)) | ||
501 | #endif | ||
502 | int xsocket_stream(len_and_sockaddr **lsap) FAST_FUNC; | ||
503 | /* Create server socket bound to bindaddr:port. bindaddr can be NULL, | ||
504 | niro | 532 | * numeric IP ("N.N.N.N") or numeric IPv6 address, |
505 | * and can have ":PORT" suffix (for IPv6 use "[X:X:...:X]:PORT"). | ||
506 | niro | 816 | * Only if there is no suffix, port argument is used */ |
507 | /* NB: these set SO_REUSEADDR before bind */ | ||
508 | int create_and_bind_stream_or_die(const char *bindaddr, int port) FAST_FUNC; | ||
509 | int create_and_bind_dgram_or_die(const char *bindaddr, int port) FAST_FUNC; | ||
510 | niro | 532 | /* Create client TCP socket connected to peer:port. Peer cannot be NULL. |
511 | * Peer can be numeric IP ("N.N.N.N"), numeric IPv6 address or hostname, | ||
512 | * and can have ":PORT" suffix (for IPv6 use "[X:X:...:X]:PORT"). | ||
513 | * If there is no suffix, port argument is used */ | ||
514 | niro | 816 | int create_and_connect_stream_or_die(const char *peer, int port) FAST_FUNC; |
515 | niro | 532 | /* Connect to peer identified by lsa */ |
516 | niro | 816 | int xconnect_stream(const len_and_sockaddr *lsa) FAST_FUNC; |
517 | niro | 984 | /* Get local address of bound or accepted socket */ |
518 | len_and_sockaddr *get_sock_lsa(int fd) FAST_FUNC RETURNS_MALLOC; | ||
519 | niro | 1123 | /* Get remote address of connected or accepted socket */ |
520 | len_and_sockaddr *get_peer_lsa(int fd) FAST_FUNC RETURNS_MALLOC; | ||
521 | niro | 532 | /* Return malloc'ed len_and_sockaddr with socket address of host:port |
522 | * Currently will return IPv4 or IPv6 sockaddrs only | ||
523 | * (depending on host), but in theory nothing prevents e.g. | ||
524 | niro | 816 | * UNIX socket address being returned, IPX sockaddr etc... |
525 | * On error does bb_error_msg and returns NULL */ | ||
526 | niro | 984 | len_and_sockaddr* host2sockaddr(const char *host, int port) FAST_FUNC RETURNS_MALLOC; |
527 | niro | 816 | /* Version which dies on error */ |
528 | niro | 984 | len_and_sockaddr* xhost2sockaddr(const char *host, int port) FAST_FUNC RETURNS_MALLOC; |
529 | len_and_sockaddr* xdotted2sockaddr(const char *host, int port) FAST_FUNC RETURNS_MALLOC; | ||
530 | niro | 816 | /* Same, useful if you want to force family (e.g. IPv6) */ |
531 | #if !ENABLE_FEATURE_IPV6 | ||
532 | #define host_and_af2sockaddr(host, port, af) host2sockaddr((host), (port)) | ||
533 | #define xhost_and_af2sockaddr(host, port, af) xhost2sockaddr((host), (port)) | ||
534 | #else | ||
535 | niro | 984 | len_and_sockaddr* host_and_af2sockaddr(const char *host, int port, sa_family_t af) FAST_FUNC RETURNS_MALLOC; |
536 | len_and_sockaddr* xhost_and_af2sockaddr(const char *host, int port, sa_family_t af) FAST_FUNC RETURNS_MALLOC; | ||
537 | niro | 816 | #endif |
538 | /* Assign sin[6]_port member if the socket is an AF_INET[6] one, | ||
539 | * otherwise no-op. Useful for ftp. | ||
540 | niro | 532 | * NB: does NOT do htons() internally, just direct assignment. */ |
541 | niro | 816 | void set_nport(len_and_sockaddr *lsa, unsigned port) FAST_FUNC; |
542 | /* Retrieve sin[6]_port or return -1 for non-INET[6] lsa's */ | ||
543 | int get_nport(const struct sockaddr *sa) FAST_FUNC; | ||
544 | /* Reverse DNS. Returns NULL on failure. */ | ||
545 | niro | 984 | char* xmalloc_sockaddr2host(const struct sockaddr *sa) FAST_FUNC RETURNS_MALLOC; |
546 | niro | 816 | /* This one doesn't append :PORTNUM */ |
547 | niro | 984 | char* xmalloc_sockaddr2host_noport(const struct sockaddr *sa) FAST_FUNC RETURNS_MALLOC; |
548 | niro | 816 | /* This one also doesn't fall back to dotted IP (returns NULL) */ |
549 | niro | 984 | char* xmalloc_sockaddr2hostonly_noport(const struct sockaddr *sa) FAST_FUNC RETURNS_MALLOC; |
550 | niro | 816 | /* inet_[ap]ton on steroids */ |
551 | niro | 984 | char* xmalloc_sockaddr2dotted(const struct sockaddr *sa) FAST_FUNC RETURNS_MALLOC; |
552 | char* xmalloc_sockaddr2dotted_noport(const struct sockaddr *sa) FAST_FUNC RETURNS_MALLOC; | ||
553 | niro | 816 | // "old" (ipv4 only) API |
554 | // users: traceroute.c hostname.c - use _list_ of all IPs | ||
555 | struct hostent *xgethostbyname(const char *name) FAST_FUNC; | ||
556 | // Also mount.c and inetd.c are using gethostbyname(), | ||
557 | // + inet_common.c has additional IPv4-only stuff | ||
558 | niro | 532 | |
559 | |||
560 | niro | 816 | void socket_want_pktinfo(int fd) FAST_FUNC; |
561 | ssize_t send_to_from(int fd, void *buf, size_t len, int flags, | ||
562 | const struct sockaddr *to, | ||
563 | const struct sockaddr *from, | ||
564 | socklen_t tolen) FAST_FUNC; | ||
565 | ssize_t recv_from_to(int fd, void *buf, size_t len, int flags, | ||
566 | struct sockaddr *from, | ||
567 | struct sockaddr *to, | ||
568 | socklen_t sa_size) FAST_FUNC; | ||
569 | |||
570 | niro | 984 | |
571 | char *xstrdup(const char *s) FAST_FUNC RETURNS_MALLOC; | ||
572 | char *xstrndup(const char *s, int n) FAST_FUNC RETURNS_MALLOC; | ||
573 | niro | 816 | void overlapping_strcpy(char *dst, const char *src) FAST_FUNC; |
574 | char *safe_strncpy(char *dst, const char *src, size_t size) FAST_FUNC; | ||
575 | niro | 984 | char *strncpy_IFNAMSIZ(char *dst, const char *src) FAST_FUNC; |
576 | niro | 816 | /* Guaranteed to NOT be a macro (smallest code). Saves nearly 2k on uclibc. |
577 | * But potentially slow, don't use in one-billion-times loops */ | ||
578 | int bb_putchar(int ch) FAST_FUNC; | ||
579 | niro | 1123 | /* Note: does not use stdio, writes to fd 2 directly */ |
580 | int bb_putchar_stderr(char ch) FAST_FUNC; | ||
581 | niro | 984 | char *xasprintf(const char *format, ...) __attribute__ ((format(printf, 1, 2))) FAST_FUNC RETURNS_MALLOC; |
582 | niro | 532 | // gcc-4.1.1 still isn't good enough at optimizing it |
583 | // (+200 bytes compared to macro) | ||
584 | niro | 816 | //static ALWAYS_INLINE |
585 | niro | 532 | //int LONE_DASH(const char *s) { return s[0] == '-' && !s[1]; } |
586 | niro | 816 | //static ALWAYS_INLINE |
587 | niro | 532 | //int NOT_LONE_DASH(const char *s) { return s[0] != '-' || s[1]; } |
588 | niro | 816 | #define LONE_DASH(s) ((s)[0] == '-' && !(s)[1]) |
589 | niro | 532 | #define NOT_LONE_DASH(s) ((s)[0] != '-' || (s)[1]) |
590 | niro | 816 | #define LONE_CHAR(s,c) ((s)[0] == (c) && !(s)[1]) |
591 | niro | 532 | #define NOT_LONE_CHAR(s,c) ((s)[0] != (c) || (s)[1]) |
592 | niro | 816 | #define DOT_OR_DOTDOT(s) ((s)[0] == '.' && (!(s)[1] || ((s)[1] == '.' && !(s)[2]))) |
593 | niro | 532 | |
594 | niro | 1123 | typedef struct uni_stat_t { |
595 | unsigned byte_count; | ||
596 | unsigned unicode_count; | ||
597 | unsigned unicode_width; | ||
598 | } uni_stat_t; | ||
599 | /* Returns a string with unprintable chars replaced by '?' or | ||
600 | * SUBST_WCHAR. This function is unicode-aware. */ | ||
601 | const char* FAST_FUNC printable_string(uni_stat_t *stats, const char *str); | ||
602 | /* Prints unprintable char ch as ^C or M-c to file | ||
603 | * (M-c is used only if ch is ORed with PRINTABLE_META), | ||
604 | * else it is printed as-is (except for ch = 0x9b) */ | ||
605 | enum { PRINTABLE_META = 0x100 }; | ||
606 | void fputc_printable(int ch, FILE *file) FAST_FUNC; | ||
607 | |||
608 | niro | 532 | /* dmalloc will redefine these to it's own implementation. It is safe |
609 | * to have the prototypes here unconditionally. */ | ||
610 | niro | 984 | void *malloc_or_warn(size_t size) FAST_FUNC RETURNS_MALLOC; |
611 | void *xmalloc(size_t size) FAST_FUNC RETURNS_MALLOC; | ||
612 | void *xzalloc(size_t size) FAST_FUNC RETURNS_MALLOC; | ||
613 | niro | 816 | void *xrealloc(void *old, size_t size) FAST_FUNC; |
614 | /* After xrealloc_vector(v, 4, idx) it's ok to use | ||
615 | * at least v[idx] and v[idx+1], for all idx values. | ||
616 | * shift specifies how many new elements are added (1: 2, 2: 4... 8: 256...) | ||
617 | * when all elements are used up. New elements are zeroed out. */ | ||
618 | #define xrealloc_vector(vector, shift, idx) \ | ||
619 | xrealloc_vector_helper((vector), (sizeof((vector)[0]) << 8) + (shift), (idx)) | ||
620 | void* xrealloc_vector_helper(void *vector, unsigned sizeof_and_shift, int idx) FAST_FUNC; | ||
621 | niro | 532 | |
622 | |||
623 | niro | 816 | extern ssize_t safe_read(int fd, void *buf, size_t count) FAST_FUNC; |
624 | extern ssize_t nonblock_safe_read(int fd, void *buf, size_t count) FAST_FUNC; | ||
625 | // NB: will return short read on error, not -1, | ||
626 | // if some data was read before error occurred | ||
627 | extern ssize_t full_read(int fd, void *buf, size_t count) FAST_FUNC; | ||
628 | extern void xread(int fd, void *buf, size_t count) FAST_FUNC; | ||
629 | extern unsigned char xread_char(int fd) FAST_FUNC; | ||
630 | extern ssize_t read_close(int fd, void *buf, size_t maxsz) FAST_FUNC; | ||
631 | extern ssize_t open_read_close(const char *filename, void *buf, size_t maxsz) FAST_FUNC; | ||
632 | // Reads one line a-la fgets (but doesn't save terminating '\n'). | ||
633 | // Reads byte-by-byte. Useful when it is important to not read ahead. | ||
634 | // Bytes are appended to pfx (which must be malloced, or NULL). | ||
635 | extern char *xmalloc_reads(int fd, char *pfx, size_t *maxsz_p) FAST_FUNC; | ||
636 | niro | 984 | /* Reads block up to *maxsz_p (default: INT_MAX - 4095) */ |
637 | extern void *xmalloc_read(int fd, size_t *maxsz_p) FAST_FUNC RETURNS_MALLOC; | ||
638 | /* Returns NULL if file can't be opened (default max size: INT_MAX - 4095) */ | ||
639 | extern void *xmalloc_open_read_close(const char *filename, size_t *maxsz_p) FAST_FUNC RETURNS_MALLOC; | ||
640 | niro | 1123 | /* Autodetects gzip/bzip2 formats. fd may be in the middle of the file! */ |
641 | #if ENABLE_FEATURE_SEAMLESS_LZMA \ | ||
642 | || ENABLE_FEATURE_SEAMLESS_BZ2 \ | ||
643 | || ENABLE_FEATURE_SEAMLESS_GZ \ | ||
644 | /* || ENABLE_FEATURE_SEAMLESS_Z */ | ||
645 | extern void setup_unzip_on_fd(int fd /*, int fail_if_not_detected*/) FAST_FUNC; | ||
646 | #else | ||
647 | # define setup_unzip_on_fd(...) ((void)0) | ||
648 | #endif | ||
649 | niro | 816 | /* Autodetects .gz etc */ |
650 | extern int open_zipped(const char *fname) FAST_FUNC; | ||
651 | niro | 984 | extern void *xmalloc_open_zipped_read_close(const char *fname, size_t *maxsz_p) FAST_FUNC RETURNS_MALLOC; |
652 | niro | 816 | /* Never returns NULL */ |
653 | niro | 984 | extern void *xmalloc_xopen_read_close(const char *filename, size_t *maxsz_p) FAST_FUNC RETURNS_MALLOC; |
654 | niro | 532 | |
655 | niro | 816 | extern ssize_t safe_write(int fd, const void *buf, size_t count) FAST_FUNC; |
656 | // NB: will return short write on error, not -1, | ||
657 | // if some data was written before error occurred | ||
658 | extern ssize_t full_write(int fd, const void *buf, size_t count) FAST_FUNC; | ||
659 | extern void xwrite(int fd, const void *buf, size_t count) FAST_FUNC; | ||
660 | niro | 984 | extern void xwrite_str(int fd, const char *str) FAST_FUNC; |
661 | niro | 1123 | extern ssize_t full_write1_str(const char *str) FAST_FUNC; |
662 | extern ssize_t full_write2_str(const char *str) FAST_FUNC; | ||
663 | niro | 816 | extern void xopen_xwrite_close(const char* file, const char *str) FAST_FUNC; |
664 | |||
665 | niro | 984 | /* Close fd, but check for failures (some types of write errors) */ |
666 | extern void xclose(int fd) FAST_FUNC; | ||
667 | |||
668 | niro | 532 | /* Reads and prints to stdout till eof, then closes FILE. Exits on error: */ |
669 | niro | 816 | extern void xprint_and_close_file(FILE *file) FAST_FUNC; |
670 | |||
671 | extern char *bb_get_chunk_from_file(FILE *file, int *end) FAST_FUNC; | ||
672 | extern char *bb_get_chunk_with_continuation(FILE *file, int *end, int *lineno) FAST_FUNC; | ||
673 | /* Reads up to (and including) TERMINATING_STRING: */ | ||
674 | niro | 984 | extern char *xmalloc_fgets_str(FILE *file, const char *terminating_string) FAST_FUNC RETURNS_MALLOC; |
675 | /* Same, with limited max size, and returns the length (excluding NUL): */ | ||
676 | extern char *xmalloc_fgets_str_len(FILE *file, const char *terminating_string, size_t *maxsz_p) FAST_FUNC RETURNS_MALLOC; | ||
677 | niro | 816 | /* Chops off TERMINATING_STRING from the end: */ |
678 | niro | 984 | extern char *xmalloc_fgetline_str(FILE *file, const char *terminating_string) FAST_FUNC RETURNS_MALLOC; |
679 | niro | 816 | /* Reads up to (and including) "\n" or NUL byte: */ |
680 | niro | 984 | extern char *xmalloc_fgets(FILE *file) FAST_FUNC RETURNS_MALLOC; |
681 | niro | 532 | /* Chops off '\n' from the end, unlike fgets: */ |
682 | niro | 984 | extern char *xmalloc_fgetline(FILE *file) FAST_FUNC RETURNS_MALLOC; |
683 | niro | 816 | /* Same, but doesn't try to conserve space (may have some slack after the end) */ |
684 | niro | 984 | /* extern char *xmalloc_fgetline_fast(FILE *file) FAST_FUNC RETURNS_MALLOC; */ |
685 | niro | 816 | |
686 | niro | 984 | void die_if_ferror(FILE *file, const char *msg) FAST_FUNC; |
687 | void die_if_ferror_stdout(void) FAST_FUNC; | ||
688 | int fflush_all(void) FAST_FUNC; | ||
689 | void fflush_stdout_and_exit(int retval) NORETURN FAST_FUNC; | ||
690 | int fclose_if_not_stdin(FILE *file) FAST_FUNC; | ||
691 | FILE* xfopen(const char *filename, const char *mode) FAST_FUNC; | ||
692 | niro | 532 | /* Prints warning to stderr and returns NULL on failure: */ |
693 | niro | 984 | FILE* fopen_or_warn(const char *filename, const char *mode) FAST_FUNC; |
694 | niro | 532 | /* "Opens" stdin if filename is special, else just opens file: */ |
695 | niro | 984 | FILE* xfopen_stdin(const char *filename) FAST_FUNC; |
696 | FILE* fopen_or_warn_stdin(const char *filename) FAST_FUNC; | ||
697 | FILE* fopen_for_read(const char *path) FAST_FUNC; | ||
698 | FILE* xfopen_for_read(const char *path) FAST_FUNC; | ||
699 | FILE* fopen_for_write(const char *path) FAST_FUNC; | ||
700 | FILE* xfopen_for_write(const char *path) FAST_FUNC; | ||
701 | FILE* xfdopen_for_read(int fd) FAST_FUNC; | ||
702 | FILE* xfdopen_for_write(int fd) FAST_FUNC; | ||
703 | niro | 532 | |
704 | niro | 816 | int bb_pstrcmp(const void *a, const void *b) /* not FAST_FUNC! */; |
705 | void qsort_string_vector(char **sv, unsigned count) FAST_FUNC; | ||
706 | niro | 532 | |
707 | niro | 816 | /* Wrapper which restarts poll on EINTR or ENOMEM. |
708 | * On other errors complains [perror("poll")] and returns. | ||
709 | * Warning! May take (much) longer than timeout_ms to return! | ||
710 | * If this is a problem, use bare poll and open-code EINTR/ENOMEM handling */ | ||
711 | int safe_poll(struct pollfd *ufds, nfds_t nfds, int timeout_ms) FAST_FUNC; | ||
712 | niro | 532 | |
713 | niro | 816 | char *safe_gethostname(void) FAST_FUNC; |
714 | char *safe_getdomainname(void) FAST_FUNC; | ||
715 | |||
716 | /* Convert each alpha char in str to lower-case */ | ||
717 | char* str_tolower(char *str) FAST_FUNC; | ||
718 | |||
719 | char *utoa(unsigned n) FAST_FUNC; | ||
720 | char *itoa(int n) FAST_FUNC; | ||
721 | /* Returns a pointer past the formatted number, does NOT null-terminate */ | ||
722 | char *utoa_to_buf(unsigned n, char *buf, unsigned buflen) FAST_FUNC; | ||
723 | char *itoa_to_buf(int n, char *buf, unsigned buflen) FAST_FUNC; | ||
724 | /* Intelligent formatters of bignums */ | ||
725 | void smart_ulltoa4(unsigned long long ul, char buf[5], const char *scale) FAST_FUNC; | ||
726 | void smart_ulltoa5(unsigned long long ul, char buf[5], const char *scale) FAST_FUNC; | ||
727 | niro | 984 | /* If block_size == 0, display size without fractional part, |
728 | * else display (size * block_size) with one decimal digit. | ||
729 | * If display_unit == 0, show value no bigger than 1024 with suffix (K,M,G...), | ||
730 | * else divide by display_unit and do not use suffix. */ | ||
731 | #define HUMAN_READABLE_MAX_WIDTH 7 /* "1024.0G" */ | ||
732 | #define HUMAN_READABLE_MAX_WIDTH_STR "7" | ||
733 | niro | 816 | //TODO: provide pointer to buf (avoid statics)? |
734 | const char *make_human_readable_str(unsigned long long size, | ||
735 | unsigned long block_size, unsigned long display_unit) FAST_FUNC; | ||
736 | /* Put a string of hex bytes ("1b2e66fe"...), return advanced pointer */ | ||
737 | char *bin2hex(char *buf, const char *cp, int count) FAST_FUNC; | ||
738 | niro | 1123 | /* Reverse */ |
739 | char* hex2bin(char *dst, const char *str, int count) FAST_FUNC; | ||
740 | niro | 816 | |
741 | niro | 984 | /* Generate a UUID */ |
742 | void generate_uuid(uint8_t *buf) FAST_FUNC; | ||
743 | |||
744 | niro | 816 | /* Last element is marked by mult == 0 */ |
745 | niro | 532 | struct suffix_mult { |
746 | niro | 816 | char suffix[4]; |
747 | niro | 532 | unsigned mult; |
748 | }; | ||
749 | #include "xatonum.h" | ||
750 | /* Specialized: */ | ||
751 | /* Using xatoi() instead of naive atoi() is not always convenient - | ||
752 | * in many places people want *non-negative* values, but store them | ||
753 | * in signed int. Therefore we need this one: | ||
754 | * dies if input is not in [0, INT_MAX] range. Also will reject '-0' etc */ | ||
755 | niro | 816 | int xatoi_u(const char *numstr) FAST_FUNC; |
756 | niro | 532 | /* Useful for reading port numbers */ |
757 | niro | 816 | uint16_t xatou16(const char *numstr) FAST_FUNC; |
758 | niro | 532 | |
759 | |||
760 | /* These parse entries in /etc/passwd and /etc/group. This is desirable | ||
761 | * for BusyBox since we want to avoid using the glibc NSS stuff, which | ||
762 | * increases target size and is often not needed on embedded systems. */ | ||
763 | niro | 816 | long xuname2uid(const char *name) FAST_FUNC; |
764 | long xgroup2gid(const char *name) FAST_FUNC; | ||
765 | niro | 532 | /* wrapper: allows string to contain numeric uid or gid */ |
766 | niro | 816 | unsigned long get_ug_id(const char *s, long FAST_FUNC (*xname2id)(const char *)) FAST_FUNC; |
767 | niro | 532 | /* from chpst. Does not die, returns 0 on failure */ |
768 | struct bb_uidgid_t { | ||
769 | uid_t uid; | ||
770 | gid_t gid; | ||
771 | }; | ||
772 | niro | 816 | /* always sets uid and gid */ |
773 | int get_uidgid(struct bb_uidgid_t*, const char*, int numeric_ok) FAST_FUNC; | ||
774 | /* always sets uid and gid, allows numeric; exits on failure */ | ||
775 | void xget_uidgid(struct bb_uidgid_t*, const char*) FAST_FUNC; | ||
776 | /* chown-like handling of "user[:[group]" */ | ||
777 | void parse_chown_usergroup_or_die(struct bb_uidgid_t *u, char *user_group) FAST_FUNC; | ||
778 | niro | 984 | struct passwd* xgetpwnam(const char *name) FAST_FUNC; |
779 | struct group* xgetgrnam(const char *name) FAST_FUNC; | ||
780 | struct passwd* xgetpwuid(uid_t uid) FAST_FUNC; | ||
781 | struct group* xgetgrgid(gid_t gid) FAST_FUNC; | ||
782 | char* xuid2uname(uid_t uid) FAST_FUNC; | ||
783 | char* xgid2group(gid_t gid) FAST_FUNC; | ||
784 | char* uid2uname(uid_t uid) FAST_FUNC; | ||
785 | char* gid2group(gid_t gid) FAST_FUNC; | ||
786 | char* uid2uname_utoa(long uid) FAST_FUNC; | ||
787 | char* gid2group_utoa(long gid) FAST_FUNC; | ||
788 | niro | 532 | /* versions which cache results (useful for ps, ls etc) */ |
789 | niro | 816 | const char* get_cached_username(uid_t uid) FAST_FUNC; |
790 | const char* get_cached_groupname(gid_t gid) FAST_FUNC; | ||
791 | void clear_username_cache(void) FAST_FUNC; | ||
792 | niro | 532 | /* internally usernames are saved in fixed-sized char[] buffers */ |
793 | enum { USERNAME_MAX_SIZE = 16 - sizeof(int) }; | ||
794 | niro | 816 | #if ENABLE_FEATURE_CHECK_NAMES |
795 | void die_if_bad_username(const char* name) FAST_FUNC; | ||
796 | #else | ||
797 | #define die_if_bad_username(name) ((void)(name)) | ||
798 | #endif | ||
799 | niro | 532 | |
800 | niro | 1123 | #if ENABLE_FEATURE_UTMP |
801 | void FAST_FUNC write_new_utmp(pid_t pid, int new_type, const char *tty_name, const char *username, const char *hostname); | ||
802 | void FAST_FUNC update_utmp(pid_t pid, int new_type, const char *tty_name, const char *username, const char *hostname); | ||
803 | #else | ||
804 | # define write_new_utmp(pid, new_type, tty_name, username, hostname) ((void)0) | ||
805 | # define update_utmp(pid, new_type, tty_name, username, hostname) ((void)0) | ||
806 | #endif | ||
807 | |||
808 | niro | 816 | int execable_file(const char *name) FAST_FUNC; |
809 | char *find_execable(const char *filename, char **PATHp) FAST_FUNC; | ||
810 | int exists_execable(const char *filename) FAST_FUNC; | ||
811 | niro | 532 | |
812 | niro | 816 | /* BB_EXECxx always execs (it's not doing NOFORK/NOEXEC stuff), |
813 | * but it may exec busybox and call applet instead of searching PATH. | ||
814 | */ | ||
815 | #if ENABLE_FEATURE_PREFER_APPLETS | ||
816 | int bb_execvp(const char *file, char *const argv[]) FAST_FUNC; | ||
817 | #define BB_EXECVP(prog,cmd) bb_execvp(prog,cmd) | ||
818 | #define BB_EXECLP(prog,cmd,...) \ | ||
819 | execlp((find_applet_by_name(prog) >= 0) ? CONFIG_BUSYBOX_EXEC_PATH : prog, \ | ||
820 | cmd, __VA_ARGS__) | ||
821 | #else | ||
822 | #define BB_EXECVP(prog,cmd) execvp(prog,cmd) | ||
823 | #define BB_EXECLP(prog,cmd,...) execlp(prog,cmd, __VA_ARGS__) | ||
824 | #endif | ||
825 | niro | 1123 | int BB_EXECVP_or_die(char **argv) NORETURN FAST_FUNC; |
826 | niro | 816 | |
827 | niro | 1123 | /* xvfork() can't be a _function_, return after vfork mangles stack |
828 | * in the parent. It must be a macro. */ | ||
829 | #define xvfork() \ | ||
830 | ({ \ | ||
831 | pid_t bb__xvfork_pid = vfork(); \ | ||
832 | if (bb__xvfork_pid < 0) \ | ||
833 | bb_perror_msg_and_die("vfork"); \ | ||
834 | bb__xvfork_pid; \ | ||
835 | }) | ||
836 | #if BB_MMU | ||
837 | pid_t xfork(void) FAST_FUNC; | ||
838 | #endif | ||
839 | |||
840 | /* NOMMU friendy fork+exec: */ | ||
841 | niro | 816 | pid_t spawn(char **argv) FAST_FUNC; |
842 | pid_t xspawn(char **argv) FAST_FUNC; | ||
843 | |||
844 | pid_t safe_waitpid(pid_t pid, int *wstat, int options) FAST_FUNC; | ||
845 | niro | 1123 | pid_t wait_any_nohang(int *wstat) FAST_FUNC; |
846 | /* wait4pid: unlike waitpid, waits ONLY for one process. | ||
847 | * Returns sig + 0x180 if child is killed by signal. | ||
848 | niro | 816 | * It's safe to pass negative 'pids' from failed [v]fork - |
849 | * wait4pid will return -1 (and will not clobber [v]fork's errno). | ||
850 | * IOW: rc = wait4pid(spawn(argv)); | ||
851 | * if (rc < 0) bb_perror_msg("%s", argv[0]); | ||
852 | niro | 1123 | * if (rc > 0) bb_error_msg("exit code: %d", rc & 0xff); |
853 | niro | 816 | */ |
854 | int wait4pid(pid_t pid) FAST_FUNC; | ||
855 | niro | 1123 | /* Same as wait4pid(spawn(argv)), but with NOFORK/NOEXEC if configured: */ |
856 | niro | 984 | int spawn_and_wait(char **argv) FAST_FUNC; |
857 | niro | 816 | struct nofork_save_area { |
858 | jmp_buf die_jmp; | ||
859 | const char *applet_name; | ||
860 | int xfunc_error_retval; | ||
861 | uint32_t option_mask32; | ||
862 | int die_sleep; | ||
863 | smallint saved; | ||
864 | }; | ||
865 | void save_nofork_data(struct nofork_save_area *save) FAST_FUNC; | ||
866 | void restore_nofork_data(struct nofork_save_area *save) FAST_FUNC; | ||
867 | /* Does NOT check that applet is NOFORK, just blindly runs it */ | ||
868 | int run_nofork_applet(int applet_no, char **argv) FAST_FUNC; | ||
869 | int run_nofork_applet_prime(struct nofork_save_area *old, int applet_no, char **argv) FAST_FUNC; | ||
870 | |||
871 | /* Helpers for daemonization. | ||
872 | * | ||
873 | * bb_daemonize(flags) = daemonize, does not compile on NOMMU | ||
874 | * | ||
875 | * bb_daemonize_or_rexec(flags, argv) = daemonizes on MMU (and ignores argv), | ||
876 | * rexec's itself on NOMMU with argv passed as command line. | ||
877 | * Thus bb_daemonize_or_rexec may cause your <applet>_main() to be re-executed | ||
878 | * from the start. (It will detect it and not reexec again second time). | ||
879 | * You have to audit carefully that you don't do something twice as a result | ||
880 | * (opening files/sockets, parsing config files etc...)! | ||
881 | * | ||
882 | * Both of the above will redirect fd 0,1,2 to /dev/null and drop ctty | ||
883 | * (will do setsid()). | ||
884 | * | ||
885 | niro | 1123 | * fork_or_rexec(argv) = bare-bones fork on MMU, |
886 | niro | 816 | * "vfork + re-exec ourself" on NOMMU. No fd redirection, no setsid(). |
887 | niro | 984 | * On MMU ignores argv. |
888 | niro | 816 | * |
889 | * Helper for network daemons in foreground mode: | ||
890 | * | ||
891 | * bb_sanitize_stdio() = make sure that fd 0,1,2 are opened by opening them | ||
892 | * to /dev/null if they are not. | ||
893 | */ | ||
894 | enum { | ||
895 | DAEMON_CHDIR_ROOT = 1, | ||
896 | DAEMON_DEVNULL_STDIO = 2, | ||
897 | DAEMON_CLOSE_EXTRA_FDS = 4, | ||
898 | DAEMON_ONLY_SANITIZE = 8, /* internal use */ | ||
899 | }; | ||
900 | #if BB_MMU | ||
901 | enum { re_execed = 0 }; | ||
902 | niro | 1123 | # define fork_or_rexec(argv) xfork() |
903 | niro | 816 | # define bb_daemonize_or_rexec(flags, argv) bb_daemonize_or_rexec(flags) |
904 | # define bb_daemonize(flags) bb_daemonize_or_rexec(flags, bogus) | ||
905 | #else | ||
906 | niro | 1123 | extern bool re_execed; |
907 | niro | 816 | void re_exec(char **argv) NORETURN FAST_FUNC; |
908 | niro | 984 | pid_t fork_or_rexec(char **argv) FAST_FUNC; |
909 | niro | 816 | int BUG_fork_is_unavailable_on_nommu(void) FAST_FUNC; |
910 | int BUG_daemon_is_unavailable_on_nommu(void) FAST_FUNC; | ||
911 | void BUG_bb_daemonize_is_unavailable_on_nommu(void) FAST_FUNC; | ||
912 | # define fork() BUG_fork_is_unavailable_on_nommu() | ||
913 | niro | 1123 | # define xfork() BUG_fork_is_unavailable_on_nommu() |
914 | niro | 816 | # define daemon(a,b) BUG_daemon_is_unavailable_on_nommu() |
915 | # define bb_daemonize(a) BUG_bb_daemonize_is_unavailable_on_nommu() | ||
916 | #endif | ||
917 | void bb_daemonize_or_rexec(int flags, char **argv) FAST_FUNC; | ||
918 | void bb_sanitize_stdio(void) FAST_FUNC; | ||
919 | /* Clear dangerous stuff, set PATH. Return 1 if was run by different user. */ | ||
920 | int sanitize_env_if_suid(void) FAST_FUNC; | ||
921 | |||
922 | |||
923 | niro | 984 | char* single_argv(char **argv) FAST_FUNC; |
924 | niro | 816 | extern const char *const bb_argv_dash[]; /* "-", NULL */ |
925 | niro | 532 | extern const char *opt_complementary; |
926 | niro | 984 | #if ENABLE_LONG_OPTS || ENABLE_FEATURE_GETOPT_LONG |
927 | niro | 816 | #define No_argument "\0" |
928 | #define Required_argument "\001" | ||
929 | #define Optional_argument "\002" | ||
930 | extern const char *applet_long_options; | ||
931 | niro | 532 | #endif |
932 | extern uint32_t option_mask32; | ||
933 | niro | 816 | extern uint32_t getopt32(char **argv, const char *applet_opts, ...) FAST_FUNC; |
934 | niro | 532 | |
935 | |||
936 | niro | 816 | typedef struct llist_t { |
937 | niro | 532 | char *data; |
938 | niro | 816 | struct llist_t *link; |
939 | niro | 532 | } llist_t; |
940 | niro | 816 | void llist_add_to(llist_t **old_head, void *data) FAST_FUNC; |
941 | void llist_add_to_end(llist_t **list_head, void *data) FAST_FUNC; | ||
942 | void *llist_pop(llist_t **elm) FAST_FUNC; | ||
943 | void llist_unlink(llist_t **head, llist_t *elm) FAST_FUNC; | ||
944 | void llist_free(llist_t *elm, void (*freeit)(void *data)) FAST_FUNC; | ||
945 | llist_t *llist_rev(llist_t *list) FAST_FUNC; | ||
946 | niro | 984 | llist_t *llist_find_str(llist_t *first, const char *str) FAST_FUNC; |
947 | niro | 816 | /* BTW, surprisingly, changing API to |
948 | * llist_t *llist_add_to(llist_t *old_head, void *data) | ||
949 | * etc does not result in smaller code... */ | ||
950 | niro | 532 | |
951 | niro | 816 | /* start_stop_daemon and udhcpc are special - they want |
952 | * to create pidfiles regardless of FEATURE_PIDFILE */ | ||
953 | #if ENABLE_FEATURE_PIDFILE || defined(WANT_PIDFILE) | ||
954 | /* True only if we created pidfile which is *file*, not /dev/null etc */ | ||
955 | extern smallint wrote_pidfile; | ||
956 | void write_pidfile(const char *path) FAST_FUNC; | ||
957 | #define remove_pidfile(path) do { if (wrote_pidfile) unlink(path); } while (0) | ||
958 | #else | ||
959 | enum { wrote_pidfile = 0 }; | ||
960 | #define write_pidfile(path) ((void)0) | ||
961 | #define remove_pidfile(path) ((void)0) | ||
962 | #endif | ||
963 | |||
964 | niro | 532 | enum { |
965 | LOGMODE_NONE = 0, | ||
966 | niro | 816 | LOGMODE_STDIO = (1 << 0), |
967 | LOGMODE_SYSLOG = (1 << 1) * ENABLE_FEATURE_SYSLOG, | ||
968 | niro | 532 | LOGMODE_BOTH = LOGMODE_SYSLOG + LOGMODE_STDIO, |
969 | }; | ||
970 | extern const char *msg_eol; | ||
971 | niro | 816 | extern smallint logmode; |
972 | niro | 532 | extern int die_sleep; |
973 | extern int xfunc_error_retval; | ||
974 | niro | 816 | extern jmp_buf die_jmp; |
975 | extern void xfunc_die(void) NORETURN FAST_FUNC; | ||
976 | extern void bb_show_usage(void) NORETURN FAST_FUNC; | ||
977 | extern void bb_error_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2))) FAST_FUNC; | ||
978 | extern void bb_error_msg_and_die(const char *s, ...) __attribute__ ((noreturn, format (printf, 1, 2))) FAST_FUNC; | ||
979 | extern void bb_perror_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2))) FAST_FUNC; | ||
980 | extern void bb_simple_perror_msg(const char *s) FAST_FUNC; | ||
981 | extern void bb_perror_msg_and_die(const char *s, ...) __attribute__ ((noreturn, format (printf, 1, 2))) FAST_FUNC; | ||
982 | niro | 984 | extern void bb_simple_perror_msg_and_die(const char *s) NORETURN FAST_FUNC; |
983 | niro | 816 | extern void bb_herror_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2))) FAST_FUNC; |
984 | extern void bb_herror_msg_and_die(const char *s, ...) __attribute__ ((noreturn, format (printf, 1, 2))) FAST_FUNC; | ||
985 | extern void bb_perror_nomsg_and_die(void) NORETURN FAST_FUNC; | ||
986 | extern void bb_perror_nomsg(void) FAST_FUNC; | ||
987 | extern void bb_info_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2))) FAST_FUNC; | ||
988 | extern void bb_verror_msg(const char *s, va_list p, const char *strerr) FAST_FUNC; | ||
989 | niro | 532 | |
990 | niro | 816 | /* We need to export XXX_main from libbusybox |
991 | * only if we build "individual" binaries | ||
992 | */ | ||
993 | #if ENABLE_FEATURE_INDIVIDUAL | ||
994 | #define MAIN_EXTERNALLY_VISIBLE EXTERNALLY_VISIBLE | ||
995 | #else | ||
996 | #define MAIN_EXTERNALLY_VISIBLE | ||
997 | #endif | ||
998 | niro | 532 | |
999 | |||
1000 | niro | 816 | /* Applets which are useful from another applets */ |
1001 | int bb_cat(char** argv); | ||
1002 | /* If shell needs them, they exist even if not enabled as applets */ | ||
1003 | niro | 984 | int echo_main(int argc, char** argv) IF_ECHO(MAIN_EXTERNALLY_VISIBLE); |
1004 | int printf_main(int argc, char **argv) IF_PRINTF(MAIN_EXTERNALLY_VISIBLE); | ||
1005 | int test_main(int argc, char **argv) IF_TEST(MAIN_EXTERNALLY_VISIBLE); | ||
1006 | int kill_main(int argc, char **argv) IF_KILL(MAIN_EXTERNALLY_VISIBLE); | ||
1007 | niro | 816 | /* Similar, but used by chgrp, not shell */ |
1008 | niro | 984 | int chown_main(int argc, char **argv) IF_CHOWN(MAIN_EXTERNALLY_VISIBLE); |
1009 | /* Used by ftpd */ | ||
1010 | int ls_main(int argc, char **argv) IF_LS(MAIN_EXTERNALLY_VISIBLE); | ||
1011 | /* Don't need IF_xxx() guard for these */ | ||
1012 | niro | 816 | int gunzip_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
1013 | int bunzip2_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; | ||
1014 | niro | 532 | |
1015 | niro | 816 | #if ENABLE_ROUTE |
1016 | void bb_displayroutes(int noresolve, int netstatfmt) FAST_FUNC; | ||
1017 | #endif | ||
1018 | |||
1019 | |||
1020 | niro | 532 | /* Networking */ |
1021 | niro | 816 | int create_icmp_socket(void) FAST_FUNC; |
1022 | int create_icmp6_socket(void) FAST_FUNC; | ||
1023 | niro | 532 | /* interface.c */ |
1024 | niro | 816 | /* This structure defines protocol families and their handlers. */ |
1025 | struct aftype { | ||
1026 | const char *name; | ||
1027 | const char *title; | ||
1028 | int af; | ||
1029 | int alen; | ||
1030 | char* FAST_FUNC (*print)(unsigned char *); | ||
1031 | const char* FAST_FUNC (*sprint)(struct sockaddr *, int numeric); | ||
1032 | int FAST_FUNC (*input)(/*int type,*/ const char *bufp, struct sockaddr *); | ||
1033 | void FAST_FUNC (*herror)(char *text); | ||
1034 | int FAST_FUNC (*rprint)(int options); | ||
1035 | int FAST_FUNC (*rinput)(int typ, int ext, char **argv); | ||
1036 | /* may modify src */ | ||
1037 | int FAST_FUNC (*getmask)(char *src, struct sockaddr *mask, char *name); | ||
1038 | }; | ||
1039 | /* This structure defines hardware protocols and their handlers. */ | ||
1040 | struct hwtype { | ||
1041 | const char *name; | ||
1042 | const char *title; | ||
1043 | int type; | ||
1044 | int alen; | ||
1045 | char* FAST_FUNC (*print)(unsigned char *); | ||
1046 | int FAST_FUNC (*input)(const char *, struct sockaddr *); | ||
1047 | int FAST_FUNC (*activate)(int fd); | ||
1048 | int suppress_null_addr; | ||
1049 | }; | ||
1050 | extern smallint interface_opt_a; | ||
1051 | int display_interfaces(char *ifname) FAST_FUNC; | ||
1052 | #if ENABLE_FEATURE_HWIB | ||
1053 | int in_ib(const char *bufp, struct sockaddr *sap) FAST_FUNC; | ||
1054 | #else | ||
1055 | #define in_ib(a, b) 1 /* fail */ | ||
1056 | #endif | ||
1057 | const struct aftype *get_aftype(const char *name) FAST_FUNC; | ||
1058 | const struct hwtype *get_hwtype(const char *name) FAST_FUNC; | ||
1059 | const struct hwtype *get_hwntype(int type) FAST_FUNC; | ||
1060 | niro | 532 | |
1061 | |||
1062 | #ifndef BUILD_INDIVIDUAL | ||
1063 | niro | 816 | extern int find_applet_by_name(const char *name) FAST_FUNC; |
1064 | /* Returns only if applet is not found. */ | ||
1065 | extern void run_applet_and_exit(const char *name, char **argv) FAST_FUNC; | ||
1066 | extern void run_applet_no_and_exit(int a, char **argv) NORETURN FAST_FUNC; | ||
1067 | niro | 532 | #endif |
1068 | |||
1069 | niro | 816 | #ifdef HAVE_MNTENT_H |
1070 | extern int match_fstype(const struct mntent *mt, const char *fstypes) FAST_FUNC; | ||
1071 | niro | 984 | extern struct mntent *find_mount_point(const char *name, int subdir_too) FAST_FUNC; |
1072 | niro | 816 | #endif |
1073 | extern void erase_mtab(const char * name) FAST_FUNC; | ||
1074 | extern unsigned int tty_baud_to_value(speed_t speed) FAST_FUNC; | ||
1075 | extern speed_t tty_value_to_baud(unsigned int value) FAST_FUNC; | ||
1076 | niro | 984 | #if ENABLE_DESKTOP |
1077 | extern void bb_warn_ignoring_args(char *arg) FAST_FUNC; | ||
1078 | #else | ||
1079 | # define bb_warn_ignoring_args(arg) ((void)0) | ||
1080 | #endif | ||
1081 | niro | 532 | |
1082 | niro | 816 | extern int get_linux_version_code(void) FAST_FUNC; |
1083 | niro | 532 | |
1084 | niro | 816 | extern char *query_loop(const char *device) FAST_FUNC; |
1085 | extern int del_loop(const char *device) FAST_FUNC; | ||
1086 | /* If *devname is not NULL, use that name, otherwise try to find free one, | ||
1087 | * malloc and return it in *devname. | ||
1088 | * return value: 1: read-only loopdev was setup, 0: rw, < 0: error */ | ||
1089 | extern int set_loop(char **devname, const char *file, unsigned long long offset) FAST_FUNC; | ||
1090 | niro | 532 | |
1091 | niro | 984 | /* Like bb_ask below, but asks on stdin with no timeout. */ |
1092 | char *bb_ask_stdin(const char * prompt) FAST_FUNC; | ||
1093 | niro | 816 | //TODO: pass buf pointer or return allocated buf (avoid statics)? |
1094 | niro | 984 | char *bb_ask(const int fd, int timeout, const char * prompt) FAST_FUNC; |
1095 | niro | 816 | int bb_ask_confirmation(void) FAST_FUNC; |
1096 | niro | 532 | |
1097 | niro | 816 | int bb_parse_mode(const char* s, mode_t* theMode) FAST_FUNC; |
1098 | niro | 532 | |
1099 | niro | 816 | /* |
1100 | * Config file parser | ||
1101 | */ | ||
1102 | enum { | ||
1103 | PARSE_COLLAPSE = 0x00010000, // treat consecutive delimiters as one | ||
1104 | PARSE_TRIM = 0x00020000, // trim leading and trailing delimiters | ||
1105 | // TODO: COLLAPSE and TRIM seem to always go in pair | ||
1106 | PARSE_GREEDY = 0x00040000, // last token takes entire remainder of the line | ||
1107 | PARSE_MIN_DIE = 0x00100000, // die if < min tokens found | ||
1108 | // keep a copy of current line | ||
1109 | PARSE_KEEP_COPY = 0x00200000 * ENABLE_FEATURE_CROND_D, | ||
1110 | // PARSE_ESCAPE = 0x00400000, // process escape sequences in tokens | ||
1111 | // NORMAL is: | ||
1112 | // * remove leading and trailing delimiters and collapse | ||
1113 | // multiple delimiters into one | ||
1114 | // * warn and continue if less than mintokens delimiters found | ||
1115 | // * grab everything into last token | ||
1116 | PARSE_NORMAL = PARSE_COLLAPSE | PARSE_TRIM | PARSE_GREEDY, | ||
1117 | }; | ||
1118 | typedef struct parser_t { | ||
1119 | FILE *fp; | ||
1120 | char *line; | ||
1121 | char *data; | ||
1122 | int lineno; | ||
1123 | } parser_t; | ||
1124 | parser_t* config_open(const char *filename) FAST_FUNC; | ||
1125 | parser_t* config_open2(const char *filename, FILE* FAST_FUNC (*fopen_func)(const char *path)) FAST_FUNC; | ||
1126 | niro | 1123 | /* delims[0] is a comment char (use '\0' to disable), the rest are token delimiters */ |
1127 | niro | 816 | int config_read(parser_t *parser, char **tokens, unsigned flags, const char *delims) FAST_FUNC; |
1128 | #define config_read(parser, tokens, max, min, str, flags) \ | ||
1129 | config_read(parser, tokens, ((flags) | (((min) & 0xFF) << 8) | ((max) & 0xFF)), str) | ||
1130 | void config_close(parser_t *parser) FAST_FUNC; | ||
1131 | niro | 532 | |
1132 | niro | 816 | /* Concatenate path and filename to new allocated buffer. |
1133 | * Add "/" only as needed (no duplicate "//" are produced). | ||
1134 | * If path is NULL, it is assumed to be "/". | ||
1135 | * filename should not be NULL. */ | ||
1136 | char *concat_path_file(const char *path, const char *filename) FAST_FUNC; | ||
1137 | char *concat_subpath_file(const char *path, const char *filename) FAST_FUNC; | ||
1138 | const char *bb_basename(const char *name) FAST_FUNC; | ||
1139 | /* NB: can violate const-ness (similarly to strchr) */ | ||
1140 | char *last_char_is(const char *s, int c) FAST_FUNC; | ||
1141 | niro | 532 | |
1142 | |||
1143 | niro | 816 | int bb_make_directory(char *path, long mode, int flags) FAST_FUNC; |
1144 | niro | 532 | |
1145 | niro | 816 | int get_signum(const char *name) FAST_FUNC; |
1146 | const char *get_signame(int number) FAST_FUNC; | ||
1147 | void print_signames(void) FAST_FUNC; | ||
1148 | niro | 532 | |
1149 | niro | 816 | char *bb_simplify_path(const char *path) FAST_FUNC; |
1150 | niro | 984 | /* Returns ptr to NUL */ |
1151 | char *bb_simplify_abs_path_inplace(char *path) FAST_FUNC; | ||
1152 | niro | 532 | |
1153 | #define FAIL_DELAY 3 | ||
1154 | niro | 816 | extern void bb_do_delay(int seconds) FAST_FUNC; |
1155 | extern void change_identity(const struct passwd *pw) FAST_FUNC; | ||
1156 | extern void run_shell(const char *shell, int loginshell, const char *command, const char **additional_args) NORETURN FAST_FUNC; | ||
1157 | niro | 532 | #if ENABLE_SELINUX |
1158 | niro | 816 | extern void renew_current_security_context(void) FAST_FUNC; |
1159 | extern void set_current_security_context(security_context_t sid) FAST_FUNC; | ||
1160 | extern context_t set_security_context_component(security_context_t cur_context, | ||
1161 | char *user, char *role, char *type, char *range) FAST_FUNC; | ||
1162 | extern void setfscreatecon_or_die(security_context_t scontext) FAST_FUNC; | ||
1163 | extern void selinux_preserve_fcontext(int fdesc) FAST_FUNC; | ||
1164 | #else | ||
1165 | #define selinux_preserve_fcontext(fdesc) ((void)0) | ||
1166 | niro | 532 | #endif |
1167 | niro | 816 | extern void selinux_or_die(void) FAST_FUNC; |
1168 | |||
1169 | /* setup_environment: | ||
1170 | niro | 1123 | * if chdir pw->pw_dir: ok: else if to_tmp == 1: goto /tmp else: goto / or die |
1171 | niro | 816 | * if clear_env = 1: cd(pw->pw_dir), clear environment, then set |
1172 | * TERM=(old value) | ||
1173 | * USER=pw->pw_name, LOGNAME=pw->pw_name | ||
1174 | * PATH=bb_default_[root_]path | ||
1175 | * HOME=pw->pw_dir | ||
1176 | * SHELL=shell | ||
1177 | * else if change_env = 1: | ||
1178 | * if not root (if pw->pw_uid != 0): | ||
1179 | * USER=pw->pw_name, LOGNAME=pw->pw_name | ||
1180 | * HOME=pw->pw_dir | ||
1181 | * SHELL=shell | ||
1182 | * else does nothing | ||
1183 | */ | ||
1184 | niro | 1123 | #define SETUP_ENV_CHANGEENV (1 << 0) |
1185 | #define SETUP_ENV_CLEARENV (1 << 1) | ||
1186 | #define SETUP_ENV_TO_TMP (1 << 2) | ||
1187 | extern void setup_environment(const char *shell, int flags, const struct passwd *pw) FAST_FUNC; | ||
1188 | niro | 816 | extern int correct_password(const struct passwd *pw) FAST_FUNC; |
1189 | /* Returns a malloced string */ | ||
1190 | #if !ENABLE_USE_BB_CRYPT | ||
1191 | #define pw_encrypt(clear, salt, cleanup) pw_encrypt(clear, salt) | ||
1192 | niro | 532 | #endif |
1193 | niro | 816 | extern char *pw_encrypt(const char *clear, const char *salt, int cleanup) FAST_FUNC; |
1194 | extern int obscure(const char *old, const char *newval, const struct passwd *pwdp) FAST_FUNC; | ||
1195 | /* rnd is additional random input. New one is returned. | ||
1196 | * Useful if you call crypt_make_salt many times in a row: | ||
1197 | * rnd = crypt_make_salt(buf1, 4, 0); | ||
1198 | * rnd = crypt_make_salt(buf2, 4, rnd); | ||
1199 | * rnd = crypt_make_salt(buf3, 4, rnd); | ||
1200 | * (otherwise we risk having same salt generated) | ||
1201 | */ | ||
1202 | extern int crypt_make_salt(char *p, int cnt, int rnd) FAST_FUNC; | ||
1203 | niro | 984 | |
1204 | niro | 816 | /* Returns number of lines changed, or -1 on error */ |
1205 | niro | 984 | #if !(ENABLE_FEATURE_ADDUSER_TO_GROUP || ENABLE_FEATURE_DEL_USER_FROM_GROUP) |
1206 | #define update_passwd(filename, username, data, member) \ | ||
1207 | update_passwd(filename, username, data) | ||
1208 | #endif | ||
1209 | extern int update_passwd(const char *filename, | ||
1210 | const char *username, | ||
1211 | const char *data, | ||
1212 | const char *member) FAST_FUNC; | ||
1213 | niro | 532 | |
1214 | niro | 816 | int index_in_str_array(const char *const string_array[], const char *key) FAST_FUNC; |
1215 | int index_in_strings(const char *strings, const char *key) FAST_FUNC; | ||
1216 | int index_in_substr_array(const char *const string_array[], const char *key) FAST_FUNC; | ||
1217 | int index_in_substrings(const char *strings, const char *key) FAST_FUNC; | ||
1218 | const char *nth_string(const char *strings, int n) FAST_FUNC; | ||
1219 | |||
1220 | extern void print_login_issue(const char *issue_file, const char *tty) FAST_FUNC; | ||
1221 | extern void print_login_prompt(void) FAST_FUNC; | ||
1222 | |||
1223 | niro | 984 | char *xmalloc_ttyname(int fd) FAST_FUNC RETURNS_MALLOC; |
1224 | niro | 816 | /* NB: typically you want to pass fd 0, not 1. Think 'applet | grep something' */ |
1225 | int get_terminal_width_height(int fd, unsigned *width, unsigned *height) FAST_FUNC; | ||
1226 | |||
1227 | int tcsetattr_stdin_TCSANOW(const struct termios *tp) FAST_FUNC; | ||
1228 | |||
1229 | /* NB: "unsigned request" is crucial! "int request" will break some arches! */ | ||
1230 | int ioctl_or_perror(int fd, unsigned request, void *argp, const char *fmt,...) __attribute__ ((format (printf, 4, 5))) FAST_FUNC; | ||
1231 | int ioctl_or_perror_and_die(int fd, unsigned request, void *argp, const char *fmt,...) __attribute__ ((format (printf, 4, 5))) FAST_FUNC; | ||
1232 | #if ENABLE_IOCTL_HEX2STR_ERROR | ||
1233 | int bb_ioctl_or_warn(int fd, unsigned request, void *argp, const char *ioctl_name) FAST_FUNC; | ||
1234 | int bb_xioctl(int fd, unsigned request, void *argp, const char *ioctl_name) FAST_FUNC; | ||
1235 | #define ioctl_or_warn(fd,request,argp) bb_ioctl_or_warn(fd,request,argp,#request) | ||
1236 | #define xioctl(fd,request,argp) bb_xioctl(fd,request,argp,#request) | ||
1237 | #else | ||
1238 | int bb_ioctl_or_warn(int fd, unsigned request, void *argp) FAST_FUNC; | ||
1239 | int bb_xioctl(int fd, unsigned request, void *argp) FAST_FUNC; | ||
1240 | #define ioctl_or_warn(fd,request,argp) bb_ioctl_or_warn(fd,request,argp) | ||
1241 | #define xioctl(fd,request,argp) bb_xioctl(fd,request,argp) | ||
1242 | #endif | ||
1243 | |||
1244 | char *is_in_ino_dev_hashtable(const struct stat *statbuf) FAST_FUNC; | ||
1245 | void add_to_ino_dev_hashtable(const struct stat *statbuf, const char *name) FAST_FUNC; | ||
1246 | void reset_ino_dev_hashtable(void) FAST_FUNC; | ||
1247 | niro | 532 | #ifdef __GLIBC__ |
1248 | /* At least glibc has horrendously large inline for this, so wrap it */ | ||
1249 | niro | 816 | unsigned long long bb_makedev(unsigned int major, unsigned int minor) FAST_FUNC; |
1250 | niro | 532 | #undef makedev |
1251 | #define makedev(a,b) bb_makedev(a,b) | ||
1252 | #endif | ||
1253 | |||
1254 | |||
1255 | niro | 984 | /* "Keycodes" that report an escape sequence. |
1256 | * We use something which fits into signed char, | ||
1257 | * yet doesn't represent any valid Unicode character. | ||
1258 | * Also, -1 is reserved for error indication and we don't use it. */ | ||
1259 | enum { | ||
1260 | KEYCODE_UP = -2, | ||
1261 | KEYCODE_DOWN = -3, | ||
1262 | KEYCODE_RIGHT = -4, | ||
1263 | KEYCODE_LEFT = -5, | ||
1264 | KEYCODE_HOME = -6, | ||
1265 | KEYCODE_END = -7, | ||
1266 | KEYCODE_INSERT = -8, | ||
1267 | KEYCODE_DELETE = -9, | ||
1268 | KEYCODE_PAGEUP = -10, | ||
1269 | KEYCODE_PAGEDOWN = -11, | ||
1270 | |||
1271 | KEYCODE_CTRL_UP = KEYCODE_UP & ~0x40, | ||
1272 | KEYCODE_CTRL_DOWN = KEYCODE_DOWN & ~0x40, | ||
1273 | KEYCODE_CTRL_RIGHT = KEYCODE_RIGHT & ~0x40, | ||
1274 | KEYCODE_CTRL_LEFT = KEYCODE_LEFT & ~0x40, | ||
1275 | #if 0 | ||
1276 | KEYCODE_FUN1 = -12, | ||
1277 | KEYCODE_FUN2 = -13, | ||
1278 | KEYCODE_FUN3 = -14, | ||
1279 | KEYCODE_FUN4 = -15, | ||
1280 | KEYCODE_FUN5 = -16, | ||
1281 | KEYCODE_FUN6 = -17, | ||
1282 | KEYCODE_FUN7 = -18, | ||
1283 | KEYCODE_FUN8 = -19, | ||
1284 | KEYCODE_FUN9 = -20, | ||
1285 | KEYCODE_FUN10 = -21, | ||
1286 | KEYCODE_FUN11 = -22, | ||
1287 | KEYCODE_FUN12 = -23, | ||
1288 | #endif | ||
1289 | KEYCODE_CURSOR_POS = -0x100, /* 0xfff..fff00 */ | ||
1290 | /* How long is the longest ESC sequence we know? | ||
1291 | * We want it big enough to be able to contain | ||
1292 | * cursor position sequence "ESC [ 9999 ; 9999 R" | ||
1293 | */ | ||
1294 | KEYCODE_BUFFER_SIZE = 16 | ||
1295 | }; | ||
1296 | /* Note: fd may be in blocking or non-blocking mode, both make sense. | ||
1297 | * For one, less uses non-blocking mode. | ||
1298 | * Only the first read syscall inside read_key may block indefinitely | ||
1299 | * (unless fd is in non-blocking mode), | ||
1300 | * subsequent reads will time out after a few milliseconds. | ||
1301 | * Return of -1 means EOF or error (errno == 0 on EOF). | ||
1302 | * buffer[0] is used as a counter of buffered chars and must be 0 | ||
1303 | * on first call. | ||
1304 | niro | 1123 | * timeout: |
1305 | * -2: do not poll for input; | ||
1306 | * -1: poll(-1) (i.e. block); | ||
1307 | * >=0: poll for TIMEOUT milliseconds, return -1/EAGAIN on timeout | ||
1308 | niro | 984 | */ |
1309 | niro | 1123 | int64_t read_key(int fd, char *buffer, int timeout) FAST_FUNC; |
1310 | void read_key_ungets(char *buffer, const char *str, unsigned len) FAST_FUNC; | ||
1311 | niro | 984 | |
1312 | |||
1313 | niro | 816 | #if ENABLE_FEATURE_EDITING |
1314 | /* It's NOT just ENABLEd or disabled. It's a number: */ | ||
1315 | niro | 984 | # ifdef CONFIG_FEATURE_EDITING_HISTORY |
1316 | # define MAX_HISTORY (CONFIG_FEATURE_EDITING_HISTORY + 0) | ||
1317 | # else | ||
1318 | # define MAX_HISTORY 0 | ||
1319 | # endif | ||
1320 | niro | 816 | typedef struct line_input_t { |
1321 | int flags; | ||
1322 | const char *path_lookup; | ||
1323 | niro | 984 | # if MAX_HISTORY |
1324 | niro | 816 | int cnt_history; |
1325 | int cur_history; | ||
1326 | niro | 984 | # if ENABLE_FEATURE_EDITING_SAVEHISTORY |
1327 | unsigned cnt_history_in_file; | ||
1328 | const char *hist_file; | ||
1329 | # endif | ||
1330 | niro | 816 | char *history[MAX_HISTORY + 1]; |
1331 | niro | 984 | # endif |
1332 | niro | 816 | } line_input_t; |
1333 | enum { | ||
1334 | DO_HISTORY = 1 * (MAX_HISTORY > 0), | ||
1335 | SAVE_HISTORY = 2 * (MAX_HISTORY > 0) * ENABLE_FEATURE_EDITING_SAVEHISTORY, | ||
1336 | TAB_COMPLETION = 4 * ENABLE_FEATURE_TAB_COMPLETION, | ||
1337 | USERNAME_COMPLETION = 8 * ENABLE_FEATURE_USERNAME_COMPLETION, | ||
1338 | VI_MODE = 0x10 * ENABLE_FEATURE_EDITING_VI, | ||
1339 | WITH_PATH_LOOKUP = 0x20, | ||
1340 | FOR_SHELL = DO_HISTORY | SAVE_HISTORY | TAB_COMPLETION | USERNAME_COMPLETION, | ||
1341 | }; | ||
1342 | line_input_t *new_line_input_t(int flags) FAST_FUNC; | ||
1343 | niro | 984 | /* So far static: void free_line_input_t(line_input_t *n) FAST_FUNC; */ |
1344 | /* maxsize must be >= 2. | ||
1345 | * Returns: | ||
1346 | niro | 816 | * -1 on read errors or EOF, or on bare Ctrl-D, |
1347 | * 0 on ctrl-C (the line entered is still returned in 'command'), | ||
1348 | * >0 length of input string, including terminating '\n' | ||
1349 | */ | ||
1350 | int read_line_input(const char* prompt, char* command, int maxsize, line_input_t *state) FAST_FUNC; | ||
1351 | #else | ||
1352 | niro | 984 | #define MAX_HISTORY 0 |
1353 | niro | 816 | int read_line_input(const char* prompt, char* command, int maxsize) FAST_FUNC; |
1354 | #define read_line_input(prompt, command, maxsize, state) \ | ||
1355 | read_line_input(prompt, command, maxsize) | ||
1356 | #endif | ||
1357 | |||
1358 | |||
1359 | niro | 532 | #ifndef COMM_LEN |
1360 | niro | 984 | # ifdef TASK_COMM_LEN |
1361 | niro | 532 | enum { COMM_LEN = TASK_COMM_LEN }; |
1362 | niro | 984 | # else |
1363 | niro | 532 | /* synchronize with sizeof(task_struct.comm) in /usr/include/linux/sched.h */ |
1364 | enum { COMM_LEN = 16 }; | ||
1365 | niro | 984 | # endif |
1366 | niro | 532 | #endif |
1367 | niro | 816 | typedef struct procps_status_t { |
1368 | niro | 532 | DIR *dir; |
1369 | niro | 984 | IF_FEATURE_SHOW_THREADS(DIR *task_dir;) |
1370 | niro | 816 | uint8_t shift_pages_to_bytes; |
1371 | uint8_t shift_pages_to_kb; | ||
1372 | niro | 532 | /* Fields are set to 0/NULL if failed to determine (or not requested) */ |
1373 | niro | 816 | uint16_t argv_len; |
1374 | char *argv0; | ||
1375 | niro | 984 | char *exe; |
1376 | IF_SELINUX(char *context;) | ||
1377 | niro | 816 | /* Everything below must contain no ptrs to malloc'ed data: |
1378 | * it is memset(0) for each process in procps_scan() */ | ||
1379 | unsigned long vsz, rss; /* we round it to kbytes */ | ||
1380 | niro | 532 | unsigned long stime, utime; |
1381 | niro | 816 | unsigned long start_time; |
1382 | niro | 532 | unsigned pid; |
1383 | unsigned ppid; | ||
1384 | unsigned pgid; | ||
1385 | unsigned sid; | ||
1386 | unsigned uid; | ||
1387 | unsigned gid; | ||
1388 | niro | 984 | #if ENABLE_FEATURE_PS_ADDITIONAL_COLUMNS |
1389 | unsigned ruid; | ||
1390 | unsigned rgid; | ||
1391 | int niceness; | ||
1392 | #endif | ||
1393 | niro | 816 | unsigned tty_major,tty_minor; |
1394 | #if ENABLE_FEATURE_TOPMEM | ||
1395 | unsigned long mapped_rw; | ||
1396 | unsigned long mapped_ro; | ||
1397 | unsigned long shared_clean; | ||
1398 | unsigned long shared_dirty; | ||
1399 | unsigned long private_clean; | ||
1400 | unsigned long private_dirty; | ||
1401 | unsigned long stack; | ||
1402 | #endif | ||
1403 | niro | 532 | char state[4]; |
1404 | niro | 816 | /* basename of executable in exec(2), read from /proc/N/stat |
1405 | * (if executable is symlink or script, it is NOT replaced | ||
1406 | * by link target or interpreter name) */ | ||
1407 | niro | 532 | char comm[COMM_LEN]; |
1408 | niro | 816 | /* user/group? - use passwd/group parsing functions */ |
1409 | #if ENABLE_FEATURE_TOP_SMP_PROCESS | ||
1410 | int last_seen_on_cpu; | ||
1411 | #endif | ||
1412 | niro | 532 | } procps_status_t; |
1413 | niro | 984 | /* flag bits for procps_scan(xx, flags) calls */ |
1414 | niro | 532 | enum { |
1415 | PSSCAN_PID = 1 << 0, | ||
1416 | PSSCAN_PPID = 1 << 1, | ||
1417 | PSSCAN_PGID = 1 << 2, | ||
1418 | PSSCAN_SID = 1 << 3, | ||
1419 | PSSCAN_UIDGID = 1 << 4, | ||
1420 | PSSCAN_COMM = 1 << 5, | ||
1421 | niro | 816 | /* PSSCAN_CMD = 1 << 6, - use read_cmdline instead */ |
1422 | PSSCAN_ARGV0 = 1 << 7, | ||
1423 | niro | 984 | PSSCAN_EXE = 1 << 8, |
1424 | niro | 816 | PSSCAN_STATE = 1 << 9, |
1425 | PSSCAN_VSZ = 1 << 10, | ||
1426 | PSSCAN_RSS = 1 << 11, | ||
1427 | PSSCAN_STIME = 1 << 12, | ||
1428 | PSSCAN_UTIME = 1 << 13, | ||
1429 | PSSCAN_TTY = 1 << 14, | ||
1430 | PSSCAN_SMAPS = (1 << 15) * ENABLE_FEATURE_TOPMEM, | ||
1431 | /* NB: used by find_pid_by_name(). Any applet using it | ||
1432 | * needs to be mentioned here. */ | ||
1433 | PSSCAN_ARGVN = (1 << 16) * (ENABLE_KILLALL | ||
1434 | || ENABLE_PGREP || ENABLE_PKILL | ||
1435 | || ENABLE_PIDOF | ||
1436 | niro | 984 | || ENABLE_SESTATUS |
1437 | niro | 816 | ), |
1438 | niro | 984 | PSSCAN_CONTEXT = (1 << 17) * ENABLE_SELINUX, |
1439 | niro | 816 | PSSCAN_START_TIME = 1 << 18, |
1440 | niro | 984 | PSSCAN_CPU = (1 << 19) * ENABLE_FEATURE_TOP_SMP_PROCESS, |
1441 | PSSCAN_NICE = (1 << 20) * ENABLE_FEATURE_PS_ADDITIONAL_COLUMNS, | ||
1442 | PSSCAN_RUIDGID = (1 << 21) * ENABLE_FEATURE_PS_ADDITIONAL_COLUMNS, | ||
1443 | PSSCAN_TASKS = (1 << 22) * ENABLE_FEATURE_SHOW_THREADS, | ||
1444 | niro | 532 | /* These are all retrieved from proc/NN/stat in one go: */ |
1445 | PSSCAN_STAT = PSSCAN_PPID | PSSCAN_PGID | PSSCAN_SID | ||
1446 | niro | 816 | /**/ | PSSCAN_COMM | PSSCAN_STATE |
1447 | /**/ | PSSCAN_VSZ | PSSCAN_RSS | ||
1448 | /**/ | PSSCAN_STIME | PSSCAN_UTIME | PSSCAN_START_TIME | ||
1449 | niro | 984 | /**/ | PSSCAN_TTY | PSSCAN_NICE |
1450 | niro | 816 | /**/ | PSSCAN_CPU |
1451 | niro | 532 | }; |
1452 | niro | 816 | //procps_status_t* alloc_procps_scan(void) FAST_FUNC; |
1453 | void free_procps_scan(procps_status_t* sp) FAST_FUNC; | ||
1454 | procps_status_t* procps_scan(procps_status_t* sp, int flags) FAST_FUNC; | ||
1455 | niro | 984 | /* Format cmdline (up to col chars) into char buf[size] */ |
1456 | niro | 816 | /* Puts [comm] if cmdline is empty (-> process is a kernel thread) */ |
1457 | niro | 984 | void read_cmdline(char *buf, int size, unsigned pid, const char *comm) FAST_FUNC; |
1458 | niro | 816 | pid_t *find_pid_by_name(const char* procName) FAST_FUNC; |
1459 | pid_t *pidlist_reverse(pid_t *pidList) FAST_FUNC; | ||
1460 | niro | 532 | |
1461 | |||
1462 | extern const char bb_uuenc_tbl_base64[]; | ||
1463 | extern const char bb_uuenc_tbl_std[]; | ||
1464 | niro | 816 | void bb_uuencode(char *store, const void *s, int length, const char *tbl) FAST_FUNC; |
1465 | niro | 532 | |
1466 | typedef struct sha1_ctx_t { | ||
1467 | niro | 984 | uint32_t hash[8]; /* 5, +3 elements for sha256 */ |
1468 | uint64_t total64; | ||
1469 | uint8_t wbuffer[64]; /* NB: always correctly aligned for uint64_t */ | ||
1470 | void (*process_block)(struct sha1_ctx_t*) FAST_FUNC; | ||
1471 | niro | 532 | } sha1_ctx_t; |
1472 | niro | 816 | void sha1_begin(sha1_ctx_t *ctx) FAST_FUNC; |
1473 | void sha1_hash(const void *data, size_t length, sha1_ctx_t *ctx) FAST_FUNC; | ||
1474 | niro | 984 | void sha1_end(void *resbuf, sha1_ctx_t *ctx) FAST_FUNC; |
1475 | typedef struct sha1_ctx_t sha256_ctx_t; | ||
1476 | void sha256_begin(sha256_ctx_t *ctx) FAST_FUNC; | ||
1477 | #define sha256_hash sha1_hash | ||
1478 | #define sha256_end sha1_end | ||
1479 | typedef struct sha512_ctx_t { | ||
1480 | uint64_t hash[8]; | ||
1481 | uint64_t total64[2]; | ||
1482 | uint8_t wbuffer[128]; /* NB: always correctly aligned for uint64_t */ | ||
1483 | } sha512_ctx_t; | ||
1484 | void sha512_begin(sha512_ctx_t *ctx) FAST_FUNC; | ||
1485 | void sha512_hash(const void *buffer, size_t len, sha512_ctx_t *ctx) FAST_FUNC; | ||
1486 | void sha512_end(void *resbuf, sha512_ctx_t *ctx) FAST_FUNC; | ||
1487 | #if 1 | ||
1488 | niro | 532 | typedef struct md5_ctx_t { |
1489 | uint32_t A; | ||
1490 | uint32_t B; | ||
1491 | uint32_t C; | ||
1492 | uint32_t D; | ||
1493 | uint64_t total; | ||
1494 | uint32_t buflen; | ||
1495 | char buffer[128]; | ||
1496 | } md5_ctx_t; | ||
1497 | niro | 984 | #else |
1498 | /* libbb/md5prime.c uses a bit different one: */ | ||
1499 | typedef struct md5_ctx_t { | ||
1500 | uint32_t state[4]; /* state (ABCD) */ | ||
1501 | uint32_t count[2]; /* number of bits, modulo 2^64 (lsb first) */ | ||
1502 | unsigned char buffer[64]; /* input buffer */ | ||
1503 | } md5_ctx_t; | ||
1504 | #endif | ||
1505 | niro | 816 | void md5_begin(md5_ctx_t *ctx) FAST_FUNC; |
1506 | void md5_hash(const void *data, size_t length, md5_ctx_t *ctx) FAST_FUNC; | ||
1507 | niro | 984 | void md5_end(void *resbuf, md5_ctx_t *ctx) FAST_FUNC; |
1508 | niro | 532 | |
1509 | niro | 984 | |
1510 | niro | 816 | uint32_t *crc32_filltable(uint32_t *tbl256, int endian) FAST_FUNC; |
1511 | niro | 532 | |
1512 | niro | 816 | typedef struct masks_labels_t { |
1513 | const char *labels; | ||
1514 | const int masks[]; | ||
1515 | } masks_labels_t; | ||
1516 | int print_flags_separated(const int *masks, const char *labels, | ||
1517 | int flags, const char *separator) FAST_FUNC; | ||
1518 | int print_flags(const masks_labels_t *ml, int flags) FAST_FUNC; | ||
1519 | niro | 532 | |
1520 | niro | 984 | typedef struct bb_progress_t { |
1521 | off_t lastsize; | ||
1522 | unsigned lastupdate_sec; | ||
1523 | unsigned start_sec; | ||
1524 | niro | 1123 | smallint inited; |
1525 | niro | 984 | } bb_progress_t; |
1526 | niro | 532 | |
1527 | niro | 984 | void bb_progress_init(bb_progress_t *p) FAST_FUNC; |
1528 | void bb_progress_update(bb_progress_t *p, const char *curfile, | ||
1529 | off_t beg_range, off_t transferred, | ||
1530 | off_t totalsize) FAST_FUNC; | ||
1531 | |||
1532 | niro | 532 | extern const char *applet_name; |
1533 | niro | 816 | /* "BusyBox vN.N.N (timestamp or extra_version)" */ |
1534 | extern const char bb_banner[]; | ||
1535 | niro | 532 | extern const char bb_msg_memory_exhausted[]; |
1536 | extern const char bb_msg_invalid_date[]; | ||
1537 | extern const char bb_msg_read_error[]; | ||
1538 | extern const char bb_msg_write_error[]; | ||
1539 | extern const char bb_msg_unknown[]; | ||
1540 | extern const char bb_msg_can_not_create_raw_socket[]; | ||
1541 | extern const char bb_msg_perm_denied_are_you_root[]; | ||
1542 | niro | 984 | extern const char bb_msg_you_must_be_root[]; |
1543 | niro | 532 | extern const char bb_msg_requires_arg[]; |
1544 | extern const char bb_msg_invalid_arg[]; | ||
1545 | extern const char bb_msg_standard_input[]; | ||
1546 | extern const char bb_msg_standard_output[]; | ||
1547 | |||
1548 | extern const char bb_str_default[]; | ||
1549 | /* NB: (bb_hexdigits_upcase[i] | 0x20) -> lowercase hex digit */ | ||
1550 | extern const char bb_hexdigits_upcase[]; | ||
1551 | |||
1552 | extern const char bb_path_mtab_file[]; | ||
1553 | extern const char bb_path_passwd_file[]; | ||
1554 | extern const char bb_path_shadow_file[]; | ||
1555 | extern const char bb_path_gshadow_file[]; | ||
1556 | extern const char bb_path_group_file[]; | ||
1557 | extern const char bb_path_motd_file[]; | ||
1558 | extern const char bb_path_wtmp_file[]; | ||
1559 | extern const char bb_dev_null[]; | ||
1560 | niro | 816 | extern const char bb_busybox_exec_path[]; |
1561 | /* util-linux manpage says /sbin:/bin:/usr/sbin:/usr/bin, | ||
1562 | * but I want to save a few bytes here */ | ||
1563 | extern const char bb_PATH_root_path[]; /* "PATH=/sbin:/usr/sbin:/bin:/usr/bin" */ | ||
1564 | #define bb_default_root_path (bb_PATH_root_path + sizeof("PATH")) | ||
1565 | #define bb_default_path (bb_PATH_root_path + sizeof("PATH=/sbin:/usr/sbin")) | ||
1566 | niro | 532 | |
1567 | niro | 816 | extern const int const_int_0; |
1568 | extern const int const_int_1; | ||
1569 | |||
1570 | |||
1571 | /* Providing hard guarantee on minimum size (think of BUFSIZ == 128) */ | ||
1572 | enum { COMMON_BUFSIZE = (BUFSIZ >= 256*sizeof(void*) ? BUFSIZ+1 : 256*sizeof(void*)) }; | ||
1573 | extern char bb_common_bufsiz1[COMMON_BUFSIZE]; | ||
1574 | /* This struct is deliberately not defined. */ | ||
1575 | /* See docs/keep_data_small.txt */ | ||
1576 | struct globals; | ||
1577 | /* '*const' ptr makes gcc optimize code much better. | ||
1578 | * Magic prevents ptr_to_globals from going into rodata. | ||
1579 | * If you want to assign a value, use SET_PTR_TO_GLOBALS(x) */ | ||
1580 | extern struct globals *const ptr_to_globals; | ||
1581 | /* At least gcc 3.4.6 on mipsel system needs optimization barrier */ | ||
1582 | #define barrier() __asm__ __volatile__("":::"memory") | ||
1583 | #define SET_PTR_TO_GLOBALS(x) do { \ | ||
1584 | niro | 984 | (*(struct globals**)&ptr_to_globals) = (void*)(x); \ |
1585 | niro | 816 | barrier(); \ |
1586 | } while (0) | ||
1587 | niro | 532 | |
1588 | /* You can change LIBBB_DEFAULT_LOGIN_SHELL, but don't use it, | ||
1589 | * use bb_default_login_shell and following defines. | ||
1590 | * If you change LIBBB_DEFAULT_LOGIN_SHELL, | ||
1591 | * don't forget to change increment constant. */ | ||
1592 | niro | 1123 | #define LIBBB_DEFAULT_LOGIN_SHELL "-/bin/sh" |
1593 | niro | 532 | extern const char bb_default_login_shell[]; |
1594 | /* "/bin/sh" */ | ||
1595 | niro | 1123 | #define DEFAULT_SHELL (bb_default_login_shell+1) |
1596 | niro | 532 | /* "sh" */ |
1597 | niro | 1123 | #define DEFAULT_SHELL_SHORT_NAME (bb_default_login_shell+6) |
1598 | niro | 532 | |
1599 | #if ENABLE_FEATURE_DEVFS | ||
1600 | # define CURRENT_VC "/dev/vc/0" | ||
1601 | # define VC_1 "/dev/vc/1" | ||
1602 | # define VC_2 "/dev/vc/2" | ||
1603 | # define VC_3 "/dev/vc/3" | ||
1604 | # define VC_4 "/dev/vc/4" | ||
1605 | # define VC_5 "/dev/vc/5" | ||
1606 | niro | 1123 | # if defined(__sh__) || defined(__H8300H__) || defined(__H8300S__) |
1607 | niro | 532 | /* Yes, this sucks, but both SH (including sh64) and H8 have a SCI(F) for their |
1608 | respective serial ports .. as such, we can't use the common device paths for | ||
1609 | these. -- PFM */ | ||
1610 | # define SC_0 "/dev/ttsc/0" | ||
1611 | # define SC_1 "/dev/ttsc/1" | ||
1612 | # define SC_FORMAT "/dev/ttsc/%d" | ||
1613 | niro | 1123 | # else |
1614 | niro | 532 | # define SC_0 "/dev/tts/0" |
1615 | # define SC_1 "/dev/tts/1" | ||
1616 | # define SC_FORMAT "/dev/tts/%d" | ||
1617 | niro | 1123 | # endif |
1618 | niro | 532 | # define VC_FORMAT "/dev/vc/%d" |
1619 | # define LOOP_FORMAT "/dev/loop/%d" | ||
1620 | niro | 816 | # define LOOP_NAMESIZE (sizeof("/dev/loop/") + sizeof(int)*3 + 1) |
1621 | niro | 532 | # define LOOP_NAME "/dev/loop/" |
1622 | # define FB_0 "/dev/fb/0" | ||
1623 | #else | ||
1624 | # define CURRENT_VC "/dev/tty0" | ||
1625 | # define VC_1 "/dev/tty1" | ||
1626 | # define VC_2 "/dev/tty2" | ||
1627 | # define VC_3 "/dev/tty3" | ||
1628 | # define VC_4 "/dev/tty4" | ||
1629 | # define VC_5 "/dev/tty5" | ||
1630 | niro | 1123 | # if defined(__sh__) || defined(__H8300H__) || defined(__H8300S__) |
1631 | niro | 532 | # define SC_0 "/dev/ttySC0" |
1632 | # define SC_1 "/dev/ttySC1" | ||
1633 | # define SC_FORMAT "/dev/ttySC%d" | ||
1634 | niro | 1123 | # else |
1635 | niro | 532 | # define SC_0 "/dev/ttyS0" |
1636 | # define SC_1 "/dev/ttyS1" | ||
1637 | # define SC_FORMAT "/dev/ttyS%d" | ||
1638 | niro | 1123 | # endif |
1639 | niro | 532 | # define VC_FORMAT "/dev/tty%d" |
1640 | # define LOOP_FORMAT "/dev/loop%d" | ||
1641 | niro | 816 | # define LOOP_NAMESIZE (sizeof("/dev/loop") + sizeof(int)*3 + 1) |
1642 | niro | 532 | # define LOOP_NAME "/dev/loop" |
1643 | # define FB_0 "/dev/fb0" | ||
1644 | #endif | ||
1645 | |||
1646 | /* The following devices are the same on devfs and non-devfs systems. */ | ||
1647 | #define CURRENT_TTY "/dev/tty" | ||
1648 | niro | 816 | #define DEV_CONSOLE "/dev/console" |
1649 | niro | 532 | |
1650 | |||
1651 | niro | 984 | #define ARRAY_SIZE(x) ((unsigned)(sizeof(x) / sizeof((x)[0]))) |
1652 | niro | 532 | |
1653 | niro | 984 | |
1654 | /* We redefine ctype macros. Unicode-correct handling of char types | ||
1655 | * can't be done with such byte-oriented operations anyway, | ||
1656 | * we don't lose anything. | ||
1657 | */ | ||
1658 | niro | 532 | #undef isalnum |
1659 | #undef isalpha | ||
1660 | #undef isascii | ||
1661 | #undef isblank | ||
1662 | #undef iscntrl | ||
1663 | niro | 984 | #undef isdigit |
1664 | niro | 532 | #undef isgraph |
1665 | #undef islower | ||
1666 | #undef isprint | ||
1667 | #undef ispunct | ||
1668 | #undef isspace | ||
1669 | #undef isupper | ||
1670 | #undef isxdigit | ||
1671 | niro | 984 | #undef toupper |
1672 | #undef tolower | ||
1673 | niro | 532 | |
1674 | niro | 984 | /* We save ~500 bytes on isdigit alone. |
1675 | * BTW, x86 likes (unsigned char) cast more than (unsigned). */ | ||
1676 | niro | 532 | |
1677 | niro | 984 | /* These work the same for ASCII and Unicode, |
1678 | * assuming no one asks "is this a *Unicode* letter?" using isalpha(letter) */ | ||
1679 | #define isascii(a) ((unsigned char)(a) <= 0x7f) | ||
1680 | #define isdigit(a) ((unsigned char)((a) - '0') <= 9) | ||
1681 | #define isupper(a) ((unsigned char)((a) - 'A') <= ('Z' - 'A')) | ||
1682 | #define islower(a) ((unsigned char)((a) - 'a') <= ('z' - 'a')) | ||
1683 | #define isalpha(a) ((unsigned char)(((a)|0x20) - 'a') <= ('z' - 'a')) | ||
1684 | #define isblank(a) ({ unsigned char bb__isblank = (a); bb__isblank == ' ' || bb__isblank == '\t'; }) | ||
1685 | #define iscntrl(a) ({ unsigned char bb__iscntrl = (a); bb__iscntrl < ' ' || bb__iscntrl == 0x7f; }) | ||
1686 | /* In POSIX/C locale isspace is only these chars: "\t\n\v\f\r" and space. | ||
1687 | * "\t\n\v\f\r" happen to have ASCII codes 9,10,11,12,13. | ||
1688 | */ | ||
1689 | #define isspace(a) ({ unsigned char bb__isspace = (a) - 9; bb__isspace == (' ' - 9) || bb__isspace <= (13 - 9); }) | ||
1690 | // Unsafe wrt NUL: #define ispunct(a) (strchr("!\"#$%&'()*+,-./:;<=>?@[\\]^_`{|}~", (a)) != NULL) | ||
1691 | #define ispunct(a) (strchrnul("!\"#$%&'()*+,-./:;<=>?@[\\]^_`{|}~", (a))[0]) | ||
1692 | // Bigger code: #define isalnum(a) ({ unsigned char bb__isalnum = (a) - '0'; bb__isalnum <= 9 || ((bb__isalnum - ('A' - '0')) & 0xdf) <= 25; }) | ||
1693 | #define isalnum(a) bb_ascii_isalnum(a) | ||
1694 | static ALWAYS_INLINE int bb_ascii_isalnum(unsigned char a) | ||
1695 | { | ||
1696 | unsigned char b = a - '0'; | ||
1697 | if (b <= 9) | ||
1698 | return (b <= 9); | ||
1699 | b = (a|0x20) - 'a'; | ||
1700 | return b <= 'z' - 'a'; | ||
1701 | } | ||
1702 | #define isxdigit(a) bb_ascii_isxdigit(a) | ||
1703 | static ALWAYS_INLINE int bb_ascii_isxdigit(unsigned char a) | ||
1704 | { | ||
1705 | unsigned char b = a - '0'; | ||
1706 | if (b <= 9) | ||
1707 | return (b <= 9); | ||
1708 | b = (a|0x20) - 'a'; | ||
1709 | return b <= 'f' - 'a'; | ||
1710 | } | ||
1711 | #define toupper(a) bb_ascii_toupper(a) | ||
1712 | static ALWAYS_INLINE unsigned char bb_ascii_toupper(unsigned char a) | ||
1713 | { | ||
1714 | unsigned char b = a - 'a'; | ||
1715 | if (b <= ('z' - 'a')) | ||
1716 | a -= 'a' - 'A'; | ||
1717 | return a; | ||
1718 | } | ||
1719 | #define tolower(a) bb_ascii_tolower(a) | ||
1720 | static ALWAYS_INLINE unsigned char bb_ascii_tolower(unsigned char a) | ||
1721 | { | ||
1722 | unsigned char b = a - 'A'; | ||
1723 | if (b <= ('Z' - 'A')) | ||
1724 | a += 'a' - 'A'; | ||
1725 | return a; | ||
1726 | } | ||
1727 | niro | 532 | |
1728 | niro | 984 | /* In ASCII and Unicode, these are likely to be very different. |
1729 | * Let's prevent ambiguous usage from the start */ | ||
1730 | #define isgraph(a) isgraph_is_ambiguous_dont_use(a) | ||
1731 | #define isprint(a) isprint_is_ambiguous_dont_use(a) | ||
1732 | /* NB: must not treat EOF as isgraph or isprint */ | ||
1733 | #define isgraph_asciionly(a) ((unsigned)((a) - 0x21) <= 0x7e - 0x21) | ||
1734 | #define isprint_asciionly(a) ((unsigned)((a) - 0x20) <= 0x7e - 0x20) | ||
1735 | niro | 816 | |
1736 | niro | 532 | |
1737 | niro | 984 | POP_SAVED_FUNCTION_VISIBILITY |
1738 | niro | 816 | |
1739 | niro | 984 | #endif |