Contents of /tags/mkinitrd-6_2_0/busybox/include/libbb.h
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Sun May 30 11:54:28 2010 UTC (14 years, 3 months ago) by niro
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Sun May 30 11:54:28 2010 UTC (14 years, 3 months ago) by niro
File MIME type: text/plain
File size: 66054 byte(s)
tagged 'mkinitrd-6_2_0'
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 LIBBB_H |
11 | #define LIBBB_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 | #if defined __FreeBSD__ |
33 | # include <netinet/in.h> |
34 | # include <arpa/inet.h> |
35 | #endif |
36 | #include <sys/stat.h> |
37 | #include <sys/time.h> |
38 | #include <sys/types.h> |
39 | #include <sys/wait.h> |
40 | #include <termios.h> |
41 | #include <time.h> |
42 | #include <unistd.h> |
43 | /* Try to pull in PATH_MAX */ |
44 | #include <limits.h> |
45 | #include <sys/param.h> |
46 | #ifndef PATH_MAX |
47 | # define PATH_MAX 256 |
48 | #endif |
49 | |
50 | #ifndef BUFSIZ |
51 | # define BUFSIZ 4096 |
52 | #endif |
53 | |
54 | #ifdef HAVE_MNTENT_H |
55 | #include <mntent.h> |
56 | #endif |
57 | |
58 | #ifdef HAVE_SYS_STATFS_H |
59 | #include <sys/statfs.h> |
60 | #endif |
61 | |
62 | #if ENABLE_SELINUX |
63 | #include <selinux/selinux.h> |
64 | #include <selinux/context.h> |
65 | #include <selinux/flask.h> |
66 | #include <selinux/av_permissions.h> |
67 | #endif |
68 | |
69 | #if ENABLE_LOCALE_SUPPORT |
70 | # include <locale.h> |
71 | #else |
72 | # define setlocale(x,y) ((void)0) |
73 | #endif |
74 | |
75 | #ifdef DMALLOC |
76 | # include <dmalloc.h> |
77 | #endif |
78 | |
79 | #include <pwd.h> |
80 | #include <grp.h> |
81 | #if ENABLE_FEATURE_SHADOWPASSWDS |
82 | # if !ENABLE_USE_BB_SHADOW |
83 | /* If using busybox's shadow implementation, do not include the shadow.h |
84 | * header as the toolchain may not provide it at all. |
85 | */ |
86 | # include <shadow.h> |
87 | # endif |
88 | #endif |
89 | |
90 | /* Some libc's forget to declare these, do it ourself */ |
91 | |
92 | extern char **environ; |
93 | #if defined(__GLIBC__) && __GLIBC__ < 2 |
94 | int vdprintf(int d, const char *format, va_list ap); |
95 | #endif |
96 | /* klogctl is in libc's klog.h, but we cheat and not #include that */ |
97 | int klogctl(int type, char *b, int len); |
98 | /* This is declared here rather than #including <libgen.h> in order to avoid |
99 | * confusing the two versions of basename. See the dirname/basename man page |
100 | * for details. */ |
101 | #if !defined __FreeBSD__ |
102 | char *dirname(char *path); |
103 | #endif |
104 | /* Include our own copy of struct sysinfo to avoid binary compatibility |
105 | * problems with Linux 2.4, which changed things. Grumble, grumble. */ |
106 | struct sysinfo { |
107 | long uptime; /* Seconds since boot */ |
108 | unsigned long loads[3]; /* 1, 5, and 15 minute load averages */ |
109 | unsigned long totalram; /* Total usable main memory size */ |
110 | unsigned long freeram; /* Available memory size */ |
111 | unsigned long sharedram; /* Amount of shared memory */ |
112 | unsigned long bufferram; /* Memory used by buffers */ |
113 | unsigned long totalswap; /* Total swap space size */ |
114 | unsigned long freeswap; /* swap space still available */ |
115 | unsigned short procs; /* Number of current processes */ |
116 | unsigned short pad; /* Padding needed for m68k */ |
117 | unsigned long totalhigh; /* Total high memory size */ |
118 | unsigned long freehigh; /* Available high memory size */ |
119 | unsigned int mem_unit; /* Memory unit size in bytes */ |
120 | char _f[20 - 2 * sizeof(long) - sizeof(int)]; /* Padding: libc5 uses this.. */ |
121 | }; |
122 | int sysinfo(struct sysinfo* info); |
123 | |
124 | |
125 | /* Make all declarations hidden (-fvisibility flag only affects definitions) */ |
126 | /* (don't include system headers after this until corresponding pop!) */ |
127 | PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN |
128 | |
129 | |
130 | #if ENABLE_USE_BB_PWD_GRP |
131 | # include "pwd_.h" |
132 | # include "grp_.h" |
133 | #endif |
134 | #if ENABLE_FEATURE_SHADOWPASSWDS |
135 | # if ENABLE_USE_BB_SHADOW |
136 | # include "shadow_.h" |
137 | # endif |
138 | #endif |
139 | |
140 | /* Tested to work correctly with all int types (IIRC :]) */ |
141 | #define MAXINT(T) (T)( \ |
142 | ((T)-1) > 0 \ |
143 | ? (T)-1 \ |
144 | : (T)~((T)1 << (sizeof(T)*8-1)) \ |
145 | ) |
146 | |
147 | #define MININT(T) (T)( \ |
148 | ((T)-1) > 0 \ |
149 | ? (T)0 \ |
150 | : ((T)1 << (sizeof(T)*8-1)) \ |
151 | ) |
152 | |
153 | /* Large file support */ |
154 | /* Note that CONFIG_LFS=y forces bbox to be built with all common ops |
155 | * (stat, lseek etc) mapped to "largefile" variants by libc. |
156 | * Practically it means that open() automatically has O_LARGEFILE added |
157 | * and all filesize/file_offset parameters and struct members are "large" |
158 | * (in today's world - signed 64bit). For full support of large files, |
159 | * we need a few helper #defines (below) and careful use of off_t |
160 | * instead of int/ssize_t. No lseek64(), O_LARGEFILE etc necessary */ |
161 | #if ENABLE_LFS |
162 | /* CONFIG_LFS is on */ |
163 | # if ULONG_MAX > 0xffffffff |
164 | /* "long" is long enough on this system */ |
165 | typedef unsigned long uoff_t; |
166 | # define XATOOFF(a) xatoul_range(a, 0, LONG_MAX) |
167 | /* usage: sz = BB_STRTOOFF(s, NULL, 10); if (errno || sz < 0) die(); */ |
168 | # define BB_STRTOOFF bb_strtoul |
169 | # define STRTOOFF strtoul |
170 | /* usage: printf("size: %"OFF_FMT"d (%"OFF_FMT"x)\n", sz, sz); */ |
171 | # define OFF_FMT "l" |
172 | # else |
173 | /* "long" is too short, need "long long" */ |
174 | typedef unsigned long long uoff_t; |
175 | # define XATOOFF(a) xatoull_range(a, 0, LLONG_MAX) |
176 | # define BB_STRTOOFF bb_strtoull |
177 | # define STRTOOFF strtoull |
178 | # define OFF_FMT "ll" |
179 | # endif |
180 | #else |
181 | /* CONFIG_LFS is off */ |
182 | # if UINT_MAX == 0xffffffff |
183 | /* While sizeof(off_t) == sizeof(int), off_t is typedef'ed to long anyway. |
184 | * gcc will throw warnings on printf("%d", off_t). Crap... */ |
185 | typedef unsigned long uoff_t; |
186 | # define XATOOFF(a) xatoi_u(a) |
187 | # define BB_STRTOOFF bb_strtou |
188 | # define STRTOOFF strtol |
189 | # define OFF_FMT "l" |
190 | # else |
191 | typedef unsigned long uoff_t; |
192 | # define XATOOFF(a) xatoul_range(a, 0, LONG_MAX) |
193 | # define BB_STRTOOFF bb_strtoul |
194 | # define STRTOOFF strtol |
195 | # define OFF_FMT "l" |
196 | # endif |
197 | #endif |
198 | /* scary. better ideas? (but do *test* them first!) */ |
199 | #define OFF_T_MAX ((off_t)~((off_t)1 << (sizeof(off_t)*8-1))) |
200 | |
201 | /* Some useful definitions */ |
202 | #undef FALSE |
203 | #define FALSE ((int) 0) |
204 | #undef TRUE |
205 | #define TRUE ((int) 1) |
206 | #undef SKIP |
207 | #define SKIP ((int) 2) |
208 | |
209 | /* for mtab.c */ |
210 | #define MTAB_GETMOUNTPT '1' |
211 | #define MTAB_GETDEVICE '2' |
212 | |
213 | #define BUF_SIZE 8192 |
214 | #define EXPAND_ALLOC 1024 |
215 | |
216 | /* Macros for min/max. */ |
217 | #ifndef MIN |
218 | #define MIN(a,b) (((a)<(b))?(a):(b)) |
219 | #endif |
220 | |
221 | #ifndef MAX |
222 | #define MAX(a,b) (((a)>(b))?(a):(b)) |
223 | #endif |
224 | |
225 | /* buffer allocation schemes */ |
226 | #if ENABLE_FEATURE_BUFFERS_GO_ON_STACK |
227 | #define RESERVE_CONFIG_BUFFER(buffer,len) char buffer[len] |
228 | #define RESERVE_CONFIG_UBUFFER(buffer,len) unsigned char buffer[len] |
229 | #define RELEASE_CONFIG_BUFFER(buffer) ((void)0) |
230 | #else |
231 | #if ENABLE_FEATURE_BUFFERS_GO_IN_BSS |
232 | #define RESERVE_CONFIG_BUFFER(buffer,len) static char buffer[len] |
233 | #define RESERVE_CONFIG_UBUFFER(buffer,len) static unsigned char buffer[len] |
234 | #define RELEASE_CONFIG_BUFFER(buffer) ((void)0) |
235 | #else |
236 | #define RESERVE_CONFIG_BUFFER(buffer,len) char *buffer = xmalloc(len) |
237 | #define RESERVE_CONFIG_UBUFFER(buffer,len) unsigned char *buffer = xmalloc(len) |
238 | #define RELEASE_CONFIG_BUFFER(buffer) free(buffer) |
239 | #endif |
240 | #endif |
241 | |
242 | #if defined(__GLIBC__) |
243 | /* glibc uses __errno_location() to get a ptr to errno */ |
244 | /* We can just memorize it once - no multithreading in busybox :) */ |
245 | extern int *const bb_errno; |
246 | #undef errno |
247 | #define errno (*bb_errno) |
248 | #endif |
249 | |
250 | unsigned long long monotonic_ns(void) FAST_FUNC; |
251 | unsigned long long monotonic_us(void) FAST_FUNC; |
252 | unsigned long long monotonic_ms(void) FAST_FUNC; |
253 | unsigned monotonic_sec(void) FAST_FUNC; |
254 | |
255 | extern void chomp(char *s) FAST_FUNC; |
256 | extern void trim(char *s) FAST_FUNC; |
257 | extern char *skip_whitespace(const char *) FAST_FUNC; |
258 | extern char *skip_non_whitespace(const char *) FAST_FUNC; |
259 | extern char *strrstr(const char *haystack, const char *needle) FAST_FUNC; |
260 | |
261 | //TODO: supply a pointer to char[11] buffer (avoid statics)? |
262 | extern const char *bb_mode_string(mode_t mode) FAST_FUNC; |
263 | extern int is_directory(const char *name, int followLinks, struct stat *statBuf) FAST_FUNC; |
264 | enum { /* DO NOT CHANGE THESE VALUES! cp.c, mv.c, install.c depend on them. */ |
265 | FILEUTILS_PRESERVE_STATUS = 1 << 0, /* -p */ |
266 | FILEUTILS_DEREFERENCE = 1 << 1, /* !-d */ |
267 | FILEUTILS_RECUR = 1 << 2, /* -R */ |
268 | FILEUTILS_FORCE = 1 << 3, /* -f */ |
269 | FILEUTILS_INTERACTIVE = 1 << 4, /* -i */ |
270 | FILEUTILS_MAKE_HARDLINK = 1 << 5, /* -l */ |
271 | FILEUTILS_MAKE_SOFTLINK = 1 << 6, /* -s */ |
272 | FILEUTILS_DEREF_SOFTLINK = 1 << 7, /* -L */ |
273 | FILEUTILS_DEREFERENCE_L0 = 1 << 8, /* -H */ |
274 | #if ENABLE_SELINUX |
275 | FILEUTILS_PRESERVE_SECURITY_CONTEXT = 1 << 9, /* -c */ |
276 | FILEUTILS_SET_SECURITY_CONTEXT = 1 << 10, |
277 | #endif |
278 | }; |
279 | #define FILEUTILS_CP_OPTSTR "pdRfilsLH" IF_SELINUX("c") |
280 | extern int remove_file(const char *path, int flags) FAST_FUNC; |
281 | /* NB: without FILEUTILS_RECUR in flags, it will basically "cat" |
282 | * the source, not copy (unless "source" is a directory). |
283 | * This makes "cp /dev/null file" and "install /dev/null file" (!!!) |
284 | * work coreutils-compatibly. */ |
285 | extern int copy_file(const char *source, const char *dest, int flags) FAST_FUNC; |
286 | |
287 | enum { |
288 | ACTION_RECURSE = (1 << 0), |
289 | ACTION_FOLLOWLINKS = (1 << 1), |
290 | ACTION_FOLLOWLINKS_L0 = (1 << 2), |
291 | ACTION_DEPTHFIRST = (1 << 3), |
292 | /*ACTION_REVERSE = (1 << 4), - unused */ |
293 | ACTION_QUIET = (1 << 5), |
294 | ACTION_DANGLING_OK = (1 << 6), |
295 | }; |
296 | typedef uint8_t recurse_flags_t; |
297 | extern int recursive_action(const char *fileName, unsigned flags, |
298 | int FAST_FUNC (*fileAction)(const char *fileName, struct stat* statbuf, void* userData, int depth), |
299 | int FAST_FUNC (*dirAction)(const char *fileName, struct stat* statbuf, void* userData, int depth), |
300 | void* userData, unsigned depth) FAST_FUNC; |
301 | extern int device_open(const char *device, int mode) FAST_FUNC; |
302 | enum { GETPTY_BUFSIZE = 16 }; /* more than enough for "/dev/ttyXXX" */ |
303 | extern int xgetpty(char *line) FAST_FUNC; |
304 | extern int get_console_fd_or_die(void) FAST_FUNC; |
305 | extern void console_make_active(int fd, const int vt_num) FAST_FUNC; |
306 | extern char *find_block_device(const char *path) FAST_FUNC; |
307 | /* bb_copyfd_XX print read/write errors and return -1 if they occur */ |
308 | extern off_t bb_copyfd_eof(int fd1, int fd2) FAST_FUNC; |
309 | extern off_t bb_copyfd_size(int fd1, int fd2, off_t size) FAST_FUNC; |
310 | extern void bb_copyfd_exact_size(int fd1, int fd2, off_t size) FAST_FUNC; |
311 | /* "short" copy can be detected by return value < size */ |
312 | /* this helper yells "short read!" if param is not -1 */ |
313 | extern void complain_copyfd_and_die(off_t sz) NORETURN FAST_FUNC; |
314 | extern char bb_process_escape_sequence(const char **ptr) FAST_FUNC; |
315 | /* xxxx_strip version can modify its parameter: |
316 | * "/" -> "/" |
317 | * "abc" -> "abc" |
318 | * "abc/def" -> "def" |
319 | * "abc/def/" -> "def" !! |
320 | */ |
321 | extern char *bb_get_last_path_component_strip(char *path) FAST_FUNC; |
322 | /* "abc/def/" -> "" and it never modifies 'path' */ |
323 | extern char *bb_get_last_path_component_nostrip(const char *path) FAST_FUNC; |
324 | |
325 | int ndelay_on(int fd) FAST_FUNC; |
326 | int ndelay_off(int fd) FAST_FUNC; |
327 | int close_on_exec_on(int fd) FAST_FUNC; |
328 | void xdup2(int, int) FAST_FUNC; |
329 | void xmove_fd(int, int) FAST_FUNC; |
330 | |
331 | |
332 | DIR *xopendir(const char *path) FAST_FUNC; |
333 | DIR *warn_opendir(const char *path) FAST_FUNC; |
334 | |
335 | /* UNUSED: char *xmalloc_realpath(const char *path) FAST_FUNC RETURNS_MALLOC; */ |
336 | char *xmalloc_readlink(const char *path) FAST_FUNC RETURNS_MALLOC; |
337 | char *xmalloc_readlink_or_warn(const char *path) FAST_FUNC RETURNS_MALLOC; |
338 | /* !RETURNS_MALLOC: it's a realloc-like function */ |
339 | char *xrealloc_getcwd_or_warn(char *cwd) FAST_FUNC; |
340 | |
341 | char *xmalloc_follow_symlinks(const char *path) FAST_FUNC RETURNS_MALLOC; |
342 | |
343 | |
344 | enum { |
345 | /* bb_signals(BB_FATAL_SIGS, handler) catches all signals which |
346 | * otherwise would kill us, except for those resulting from bugs: |
347 | * SIGSEGV, SIGILL, SIGFPE. |
348 | * Other fatal signals not included (TODO?): |
349 | * SIGBUS Bus error (bad memory access) |
350 | * SIGPOLL Pollable event. Synonym of SIGIO |
351 | * SIGPROF Profiling timer expired |
352 | * SIGSYS Bad argument to routine |
353 | * SIGTRAP Trace/breakpoint trap |
354 | * |
355 | * The only known arch with some of these sigs not fitting |
356 | * into 32 bits is parisc (SIGXCPU=33, SIGXFSZ=34, SIGSTKFLT=36). |
357 | * Dance around with long long to guard against that... |
358 | */ |
359 | BB_FATAL_SIGS = (int)(0 |
360 | + (1LL << SIGHUP) |
361 | + (1LL << SIGINT) |
362 | + (1LL << SIGTERM) |
363 | + (1LL << SIGPIPE) // Write to pipe with no readers |
364 | + (1LL << SIGQUIT) // Quit from keyboard |
365 | + (1LL << SIGABRT) // Abort signal from abort(3) |
366 | + (1LL << SIGALRM) // Timer signal from alarm(2) |
367 | + (1LL << SIGVTALRM) // Virtual alarm clock |
368 | + (1LL << SIGXCPU) // CPU time limit exceeded |
369 | + (1LL << SIGXFSZ) // File size limit exceeded |
370 | + (1LL << SIGUSR1) // Yes kids, these are also fatal! |
371 | + (1LL << SIGUSR2) |
372 | + 0), |
373 | }; |
374 | void bb_signals(int sigs, void (*f)(int)) FAST_FUNC; |
375 | /* Unlike signal() and bb_signals, sets handler with sigaction() |
376 | * and in a way that while signal handler is run, no other signals |
377 | * will be blocked; syscalls will not be restarted: */ |
378 | void bb_signals_recursive_norestart(int sigs, void (*f)(int)) FAST_FUNC; |
379 | /* syscalls like read() will be interrupted with EINTR: */ |
380 | void signal_no_SA_RESTART_empty_mask(int sig, void (*handler)(int)) FAST_FUNC; |
381 | /* syscalls like read() won't be interrupted (though select/poll will be): */ |
382 | void signal_SA_RESTART_empty_mask(int sig, void (*handler)(int)) FAST_FUNC; |
383 | void wait_for_any_sig(void) FAST_FUNC; |
384 | void kill_myself_with_sig(int sig) NORETURN FAST_FUNC; |
385 | void sig_block(int sig) FAST_FUNC; |
386 | void sig_unblock(int sig) FAST_FUNC; |
387 | /* Will do sigaction(signum, act, NULL): */ |
388 | int sigaction_set(int sig, const struct sigaction *act) FAST_FUNC; |
389 | /* SIG_BLOCK/SIG_UNBLOCK all signals: */ |
390 | int sigprocmask_allsigs(int how) FAST_FUNC; |
391 | /* Standard handler which just records signo */ |
392 | extern smallint bb_got_signal; |
393 | void record_signo(int signo); /* not FAST_FUNC! */ |
394 | |
395 | |
396 | void xsetgid(gid_t gid) FAST_FUNC; |
397 | void xsetuid(uid_t uid) FAST_FUNC; |
398 | void xchdir(const char *path) FAST_FUNC; |
399 | void xchroot(const char *path) FAST_FUNC; |
400 | void xsetenv(const char *key, const char *value) FAST_FUNC; |
401 | void bb_unsetenv(const char *key) FAST_FUNC; |
402 | void xunlink(const char *pathname) FAST_FUNC; |
403 | void xstat(const char *pathname, struct stat *buf) FAST_FUNC; |
404 | int xopen(const char *pathname, int flags) FAST_FUNC; |
405 | int xopen_nonblocking(const char *pathname) FAST_FUNC; |
406 | int xopen3(const char *pathname, int flags, int mode) FAST_FUNC; |
407 | int open_or_warn(const char *pathname, int flags) FAST_FUNC; |
408 | int open3_or_warn(const char *pathname, int flags, int mode) FAST_FUNC; |
409 | int open_or_warn_stdin(const char *pathname) FAST_FUNC; |
410 | void xrename(const char *oldpath, const char *newpath) FAST_FUNC; |
411 | int rename_or_warn(const char *oldpath, const char *newpath) FAST_FUNC; |
412 | off_t xlseek(int fd, off_t offset, int whence) FAST_FUNC; |
413 | off_t fdlength(int fd) FAST_FUNC; |
414 | |
415 | void xpipe(int filedes[2]) FAST_FUNC; |
416 | /* In this form code with pipes is much more readable */ |
417 | struct fd_pair { int rd; int wr; }; |
418 | #define piped_pair(pair) pipe(&((pair).rd)) |
419 | #define xpiped_pair(pair) xpipe(&((pair).rd)) |
420 | |
421 | /* Useful for having small structure members/global variables */ |
422 | typedef int8_t socktype_t; |
423 | typedef int8_t family_t; |
424 | struct BUG_too_small { |
425 | char BUG_socktype_t_too_small[(0 |
426 | | SOCK_STREAM |
427 | | SOCK_DGRAM |
428 | | SOCK_RDM |
429 | | SOCK_SEQPACKET |
430 | | SOCK_RAW |
431 | ) <= 127 ? 1 : -1]; |
432 | char BUG_family_t_too_small[(0 |
433 | | AF_UNSPEC |
434 | | AF_INET |
435 | | AF_INET6 |
436 | | AF_UNIX |
437 | #ifdef AF_PACKET |
438 | | AF_PACKET |
439 | #endif |
440 | #ifdef AF_NETLINK |
441 | | AF_NETLINK |
442 | #endif |
443 | /* | AF_DECnet */ |
444 | /* | AF_IPX */ |
445 | ) <= 127 ? 1 : -1]; |
446 | }; |
447 | |
448 | |
449 | void parse_datestr(const char *date_str, struct tm *ptm) FAST_FUNC; |
450 | time_t validate_tm_time(const char *date_str, struct tm *ptm) FAST_FUNC; |
451 | |
452 | |
453 | int xsocket(int domain, int type, int protocol) FAST_FUNC; |
454 | void xbind(int sockfd, struct sockaddr *my_addr, socklen_t addrlen) FAST_FUNC; |
455 | void xlisten(int s, int backlog) FAST_FUNC; |
456 | void xconnect(int s, const struct sockaddr *s_addr, socklen_t addrlen) FAST_FUNC; |
457 | ssize_t xsendto(int s, const void *buf, size_t len, const struct sockaddr *to, |
458 | socklen_t tolen) FAST_FUNC; |
459 | /* SO_REUSEADDR allows a server to rebind to an address that is already |
460 | * "in use" by old connections to e.g. previous server instance which is |
461 | * killed or crashed. Without it bind will fail until all such connections |
462 | * time out. Linux does not allow multiple live binds on same ip:port |
463 | * regardless of SO_REUSEADDR (unlike some other flavors of Unix). |
464 | * Turn it on before you call bind(). */ |
465 | void setsockopt_reuseaddr(int fd) FAST_FUNC; /* On Linux this never fails. */ |
466 | int setsockopt_broadcast(int fd) FAST_FUNC; |
467 | int setsockopt_bindtodevice(int fd, const char *iface) FAST_FUNC; |
468 | /* NB: returns port in host byte order */ |
469 | unsigned bb_lookup_port(const char *port, const char *protocol, unsigned default_port) FAST_FUNC; |
470 | typedef struct len_and_sockaddr { |
471 | socklen_t len; |
472 | union { |
473 | struct sockaddr sa; |
474 | struct sockaddr_in sin; |
475 | #if ENABLE_FEATURE_IPV6 |
476 | struct sockaddr_in6 sin6; |
477 | #endif |
478 | } u; |
479 | } len_and_sockaddr; |
480 | enum { |
481 | LSA_LEN_SIZE = offsetof(len_and_sockaddr, u), |
482 | LSA_SIZEOF_SA = sizeof( |
483 | union { |
484 | struct sockaddr sa; |
485 | struct sockaddr_in sin; |
486 | #if ENABLE_FEATURE_IPV6 |
487 | struct sockaddr_in6 sin6; |
488 | #endif |
489 | } |
490 | ) |
491 | }; |
492 | /* Create stream socket, and allocate suitable lsa. |
493 | * (lsa of correct size and lsa->sa.sa_family (AF_INET/AF_INET6)) |
494 | * af == AF_UNSPEC will result in trying to create IPv6 socket, |
495 | * and if kernel doesn't support it, fall back to IPv4. |
496 | * This is useful if you plan to bind to resulting local lsa. |
497 | */ |
498 | #if ENABLE_FEATURE_IPV6 |
499 | int xsocket_type(len_and_sockaddr **lsap, int af, int sock_type) FAST_FUNC; |
500 | #else |
501 | int xsocket_type(len_and_sockaddr **lsap, int sock_type) FAST_FUNC; |
502 | #define xsocket_type(lsap, af, sock_type) xsocket_type((lsap), (sock_type)) |
503 | #endif |
504 | int xsocket_stream(len_and_sockaddr **lsap) FAST_FUNC; |
505 | /* Create server socket bound to bindaddr:port. bindaddr can be NULL, |
506 | * numeric IP ("N.N.N.N") or numeric IPv6 address, |
507 | * and can have ":PORT" suffix (for IPv6 use "[X:X:...:X]:PORT"). |
508 | * Only if there is no suffix, port argument is used */ |
509 | /* NB: these set SO_REUSEADDR before bind */ |
510 | int create_and_bind_stream_or_die(const char *bindaddr, int port) FAST_FUNC; |
511 | int create_and_bind_dgram_or_die(const char *bindaddr, int port) FAST_FUNC; |
512 | /* Create client TCP socket connected to peer:port. Peer cannot be NULL. |
513 | * Peer can be numeric IP ("N.N.N.N"), numeric IPv6 address or hostname, |
514 | * and can have ":PORT" suffix (for IPv6 use "[X:X:...:X]:PORT"). |
515 | * If there is no suffix, port argument is used */ |
516 | int create_and_connect_stream_or_die(const char *peer, int port) FAST_FUNC; |
517 | /* Connect to peer identified by lsa */ |
518 | int xconnect_stream(const len_and_sockaddr *lsa) FAST_FUNC; |
519 | /* Get local address of bound or accepted socket */ |
520 | len_and_sockaddr *get_sock_lsa(int fd) FAST_FUNC RETURNS_MALLOC; |
521 | /* 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 | * UNIX socket address being returned, IPX sockaddr etc... |
525 | * On error does bb_error_msg and returns NULL */ |
526 | len_and_sockaddr* host2sockaddr(const char *host, int port) FAST_FUNC RETURNS_MALLOC; |
527 | /* Version which dies on error */ |
528 | 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 | /* 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 | 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 | #endif |
538 | /* Assign sin[6]_port member if the socket is an AF_INET[6] one, |
539 | * otherwise no-op. Useful for ftp. |
540 | * NB: does NOT do htons() internally, just direct assignment. */ |
541 | 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 | char* xmalloc_sockaddr2host(const struct sockaddr *sa) FAST_FUNC RETURNS_MALLOC; |
546 | /* This one doesn't append :PORTNUM */ |
547 | char* xmalloc_sockaddr2host_noport(const struct sockaddr *sa) FAST_FUNC RETURNS_MALLOC; |
548 | /* This one also doesn't fall back to dotted IP (returns NULL) */ |
549 | char* xmalloc_sockaddr2hostonly_noport(const struct sockaddr *sa) FAST_FUNC RETURNS_MALLOC; |
550 | /* inet_[ap]ton on steroids */ |
551 | 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 | // "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 | |
559 | |
560 | 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 | |
571 | char *xstrdup(const char *s) FAST_FUNC RETURNS_MALLOC; |
572 | char *xstrndup(const char *s, int n) FAST_FUNC RETURNS_MALLOC; |
573 | 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 | char *strncpy_IFNAMSIZ(char *dst, const char *src) FAST_FUNC; |
576 | /* 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 | char *xasprintf(const char *format, ...) __attribute__ ((format(printf, 1, 2))) FAST_FUNC RETURNS_MALLOC; |
580 | /* Prints unprintable chars ch as ^C or M-c to file |
581 | * (M-c is used only if ch is ORed with PRINTABLE_META), |
582 | * else it is printed as-is (except for ch = 0x9b) */ |
583 | enum { PRINTABLE_META = 0x100 }; |
584 | void fputc_printable(int ch, FILE *file) FAST_FUNC; |
585 | // gcc-4.1.1 still isn't good enough at optimizing it |
586 | // (+200 bytes compared to macro) |
587 | //static ALWAYS_INLINE |
588 | //int LONE_DASH(const char *s) { return s[0] == '-' && !s[1]; } |
589 | //static ALWAYS_INLINE |
590 | //int NOT_LONE_DASH(const char *s) { return s[0] != '-' || s[1]; } |
591 | #define LONE_DASH(s) ((s)[0] == '-' && !(s)[1]) |
592 | #define NOT_LONE_DASH(s) ((s)[0] != '-' || (s)[1]) |
593 | #define LONE_CHAR(s,c) ((s)[0] == (c) && !(s)[1]) |
594 | #define NOT_LONE_CHAR(s,c) ((s)[0] != (c) || (s)[1]) |
595 | #define DOT_OR_DOTDOT(s) ((s)[0] == '.' && (!(s)[1] || ((s)[1] == '.' && !(s)[2]))) |
596 | |
597 | /* dmalloc will redefine these to it's own implementation. It is safe |
598 | * to have the prototypes here unconditionally. */ |
599 | void *malloc_or_warn(size_t size) FAST_FUNC RETURNS_MALLOC; |
600 | void *xmalloc(size_t size) FAST_FUNC RETURNS_MALLOC; |
601 | void *xzalloc(size_t size) FAST_FUNC RETURNS_MALLOC; |
602 | void *xrealloc(void *old, size_t size) FAST_FUNC; |
603 | /* After xrealloc_vector(v, 4, idx) it's ok to use |
604 | * at least v[idx] and v[idx+1], for all idx values. |
605 | * shift specifies how many new elements are added (1: 2, 2: 4... 8: 256...) |
606 | * when all elements are used up. New elements are zeroed out. */ |
607 | #define xrealloc_vector(vector, shift, idx) \ |
608 | xrealloc_vector_helper((vector), (sizeof((vector)[0]) << 8) + (shift), (idx)) |
609 | void* xrealloc_vector_helper(void *vector, unsigned sizeof_and_shift, int idx) FAST_FUNC; |
610 | |
611 | |
612 | extern ssize_t safe_read(int fd, void *buf, size_t count) FAST_FUNC; |
613 | extern ssize_t nonblock_safe_read(int fd, void *buf, size_t count) FAST_FUNC; |
614 | // NB: will return short read on error, not -1, |
615 | // if some data was read before error occurred |
616 | extern ssize_t full_read(int fd, void *buf, size_t count) FAST_FUNC; |
617 | extern void xread(int fd, void *buf, size_t count) FAST_FUNC; |
618 | extern unsigned char xread_char(int fd) FAST_FUNC; |
619 | extern ssize_t read_close(int fd, void *buf, size_t maxsz) FAST_FUNC; |
620 | extern ssize_t open_read_close(const char *filename, void *buf, size_t maxsz) FAST_FUNC; |
621 | // Reads one line a-la fgets (but doesn't save terminating '\n'). |
622 | // Reads byte-by-byte. Useful when it is important to not read ahead. |
623 | // Bytes are appended to pfx (which must be malloced, or NULL). |
624 | extern char *xmalloc_reads(int fd, char *pfx, size_t *maxsz_p) FAST_FUNC; |
625 | /* Reads block up to *maxsz_p (default: INT_MAX - 4095) */ |
626 | extern void *xmalloc_read(int fd, size_t *maxsz_p) FAST_FUNC RETURNS_MALLOC; |
627 | /* Returns NULL if file can't be opened (default max size: INT_MAX - 4095) */ |
628 | extern void *xmalloc_open_read_close(const char *filename, size_t *maxsz_p) FAST_FUNC RETURNS_MALLOC; |
629 | /* Autodetects .gz etc */ |
630 | extern int open_zipped(const char *fname) FAST_FUNC; |
631 | extern void *xmalloc_open_zipped_read_close(const char *fname, size_t *maxsz_p) FAST_FUNC RETURNS_MALLOC; |
632 | /* Never returns NULL */ |
633 | extern void *xmalloc_xopen_read_close(const char *filename, size_t *maxsz_p) FAST_FUNC RETURNS_MALLOC; |
634 | |
635 | extern ssize_t safe_write(int fd, const void *buf, size_t count) FAST_FUNC; |
636 | // NB: will return short write on error, not -1, |
637 | // if some data was written before error occurred |
638 | extern ssize_t full_write(int fd, const void *buf, size_t count) FAST_FUNC; |
639 | extern void xwrite(int fd, const void *buf, size_t count) FAST_FUNC; |
640 | extern void xwrite_str(int fd, const char *str) FAST_FUNC; |
641 | extern void xopen_xwrite_close(const char* file, const char *str) FAST_FUNC; |
642 | |
643 | /* Close fd, but check for failures (some types of write errors) */ |
644 | extern void xclose(int fd) FAST_FUNC; |
645 | |
646 | /* Reads and prints to stdout till eof, then closes FILE. Exits on error: */ |
647 | extern void xprint_and_close_file(FILE *file) FAST_FUNC; |
648 | |
649 | extern char *bb_get_chunk_from_file(FILE *file, int *end) FAST_FUNC; |
650 | extern char *bb_get_chunk_with_continuation(FILE *file, int *end, int *lineno) FAST_FUNC; |
651 | /* Reads up to (and including) TERMINATING_STRING: */ |
652 | extern char *xmalloc_fgets_str(FILE *file, const char *terminating_string) FAST_FUNC RETURNS_MALLOC; |
653 | /* Same, with limited max size, and returns the length (excluding NUL): */ |
654 | extern char *xmalloc_fgets_str_len(FILE *file, const char *terminating_string, size_t *maxsz_p) FAST_FUNC RETURNS_MALLOC; |
655 | /* Chops off TERMINATING_STRING from the end: */ |
656 | extern char *xmalloc_fgetline_str(FILE *file, const char *terminating_string) FAST_FUNC RETURNS_MALLOC; |
657 | /* Reads up to (and including) "\n" or NUL byte: */ |
658 | extern char *xmalloc_fgets(FILE *file) FAST_FUNC RETURNS_MALLOC; |
659 | /* Chops off '\n' from the end, unlike fgets: */ |
660 | extern char *xmalloc_fgetline(FILE *file) FAST_FUNC RETURNS_MALLOC; |
661 | /* Same, but doesn't try to conserve space (may have some slack after the end) */ |
662 | /* extern char *xmalloc_fgetline_fast(FILE *file) FAST_FUNC RETURNS_MALLOC; */ |
663 | |
664 | void die_if_ferror(FILE *file, const char *msg) FAST_FUNC; |
665 | void die_if_ferror_stdout(void) FAST_FUNC; |
666 | int fflush_all(void) FAST_FUNC; |
667 | void fflush_stdout_and_exit(int retval) NORETURN FAST_FUNC; |
668 | int fclose_if_not_stdin(FILE *file) FAST_FUNC; |
669 | FILE* xfopen(const char *filename, const char *mode) FAST_FUNC; |
670 | /* Prints warning to stderr and returns NULL on failure: */ |
671 | FILE* fopen_or_warn(const char *filename, const char *mode) FAST_FUNC; |
672 | /* "Opens" stdin if filename is special, else just opens file: */ |
673 | FILE* xfopen_stdin(const char *filename) FAST_FUNC; |
674 | FILE* fopen_or_warn_stdin(const char *filename) FAST_FUNC; |
675 | FILE* fopen_for_read(const char *path) FAST_FUNC; |
676 | FILE* xfopen_for_read(const char *path) FAST_FUNC; |
677 | FILE* fopen_for_write(const char *path) FAST_FUNC; |
678 | FILE* xfopen_for_write(const char *path) FAST_FUNC; |
679 | FILE* xfdopen_for_read(int fd) FAST_FUNC; |
680 | FILE* xfdopen_for_write(int fd) FAST_FUNC; |
681 | |
682 | int bb_pstrcmp(const void *a, const void *b) /* not FAST_FUNC! */; |
683 | void qsort_string_vector(char **sv, unsigned count) FAST_FUNC; |
684 | |
685 | /* Wrapper which restarts poll on EINTR or ENOMEM. |
686 | * On other errors complains [perror("poll")] and returns. |
687 | * Warning! May take (much) longer than timeout_ms to return! |
688 | * If this is a problem, use bare poll and open-code EINTR/ENOMEM handling */ |
689 | int safe_poll(struct pollfd *ufds, nfds_t nfds, int timeout_ms) FAST_FUNC; |
690 | |
691 | char *safe_gethostname(void) FAST_FUNC; |
692 | char *safe_getdomainname(void) FAST_FUNC; |
693 | |
694 | /* Convert each alpha char in str to lower-case */ |
695 | char* str_tolower(char *str) FAST_FUNC; |
696 | |
697 | char *utoa(unsigned n) FAST_FUNC; |
698 | char *itoa(int n) FAST_FUNC; |
699 | /* Returns a pointer past the formatted number, does NOT null-terminate */ |
700 | char *utoa_to_buf(unsigned n, char *buf, unsigned buflen) FAST_FUNC; |
701 | char *itoa_to_buf(int n, char *buf, unsigned buflen) FAST_FUNC; |
702 | /* Intelligent formatters of bignums */ |
703 | void smart_ulltoa4(unsigned long long ul, char buf[5], const char *scale) FAST_FUNC; |
704 | void smart_ulltoa5(unsigned long long ul, char buf[5], const char *scale) FAST_FUNC; |
705 | /* If block_size == 0, display size without fractional part, |
706 | * else display (size * block_size) with one decimal digit. |
707 | * If display_unit == 0, show value no bigger than 1024 with suffix (K,M,G...), |
708 | * else divide by display_unit and do not use suffix. */ |
709 | #define HUMAN_READABLE_MAX_WIDTH 7 /* "1024.0G" */ |
710 | #define HUMAN_READABLE_MAX_WIDTH_STR "7" |
711 | //TODO: provide pointer to buf (avoid statics)? |
712 | const char *make_human_readable_str(unsigned long long size, |
713 | unsigned long block_size, unsigned long display_unit) FAST_FUNC; |
714 | /* Put a string of hex bytes ("1b2e66fe"...), return advanced pointer */ |
715 | char *bin2hex(char *buf, const char *cp, int count) FAST_FUNC; |
716 | |
717 | /* Generate a UUID */ |
718 | void generate_uuid(uint8_t *buf) FAST_FUNC; |
719 | |
720 | /* Last element is marked by mult == 0 */ |
721 | struct suffix_mult { |
722 | char suffix[4]; |
723 | unsigned mult; |
724 | }; |
725 | #include "xatonum.h" |
726 | /* Specialized: */ |
727 | /* Using xatoi() instead of naive atoi() is not always convenient - |
728 | * in many places people want *non-negative* values, but store them |
729 | * in signed int. Therefore we need this one: |
730 | * dies if input is not in [0, INT_MAX] range. Also will reject '-0' etc */ |
731 | int xatoi_u(const char *numstr) FAST_FUNC; |
732 | /* Useful for reading port numbers */ |
733 | uint16_t xatou16(const char *numstr) FAST_FUNC; |
734 | |
735 | |
736 | /* These parse entries in /etc/passwd and /etc/group. This is desirable |
737 | * for BusyBox since we want to avoid using the glibc NSS stuff, which |
738 | * increases target size and is often not needed on embedded systems. */ |
739 | long xuname2uid(const char *name) FAST_FUNC; |
740 | long xgroup2gid(const char *name) FAST_FUNC; |
741 | /* wrapper: allows string to contain numeric uid or gid */ |
742 | unsigned long get_ug_id(const char *s, long FAST_FUNC (*xname2id)(const char *)) FAST_FUNC; |
743 | /* from chpst. Does not die, returns 0 on failure */ |
744 | struct bb_uidgid_t { |
745 | uid_t uid; |
746 | gid_t gid; |
747 | }; |
748 | /* always sets uid and gid */ |
749 | int get_uidgid(struct bb_uidgid_t*, const char*, int numeric_ok) FAST_FUNC; |
750 | /* always sets uid and gid, allows numeric; exits on failure */ |
751 | void xget_uidgid(struct bb_uidgid_t*, const char*) FAST_FUNC; |
752 | /* chown-like handling of "user[:[group]" */ |
753 | void parse_chown_usergroup_or_die(struct bb_uidgid_t *u, char *user_group) FAST_FUNC; |
754 | struct passwd* xgetpwnam(const char *name) FAST_FUNC; |
755 | struct group* xgetgrnam(const char *name) FAST_FUNC; |
756 | struct passwd* xgetpwuid(uid_t uid) FAST_FUNC; |
757 | struct group* xgetgrgid(gid_t gid) FAST_FUNC; |
758 | char* xuid2uname(uid_t uid) FAST_FUNC; |
759 | char* xgid2group(gid_t gid) FAST_FUNC; |
760 | char* uid2uname(uid_t uid) FAST_FUNC; |
761 | char* gid2group(gid_t gid) FAST_FUNC; |
762 | char* uid2uname_utoa(long uid) FAST_FUNC; |
763 | char* gid2group_utoa(long gid) FAST_FUNC; |
764 | /* versions which cache results (useful for ps, ls etc) */ |
765 | const char* get_cached_username(uid_t uid) FAST_FUNC; |
766 | const char* get_cached_groupname(gid_t gid) FAST_FUNC; |
767 | void clear_username_cache(void) FAST_FUNC; |
768 | /* internally usernames are saved in fixed-sized char[] buffers */ |
769 | enum { USERNAME_MAX_SIZE = 16 - sizeof(int) }; |
770 | #if ENABLE_FEATURE_CHECK_NAMES |
771 | void die_if_bad_username(const char* name) FAST_FUNC; |
772 | #else |
773 | #define die_if_bad_username(name) ((void)(name)) |
774 | #endif |
775 | |
776 | int execable_file(const char *name) FAST_FUNC; |
777 | char *find_execable(const char *filename, char **PATHp) FAST_FUNC; |
778 | int exists_execable(const char *filename) FAST_FUNC; |
779 | |
780 | /* BB_EXECxx always execs (it's not doing NOFORK/NOEXEC stuff), |
781 | * but it may exec busybox and call applet instead of searching PATH. |
782 | */ |
783 | #if ENABLE_FEATURE_PREFER_APPLETS |
784 | int bb_execvp(const char *file, char *const argv[]) FAST_FUNC; |
785 | #define BB_EXECVP(prog,cmd) bb_execvp(prog,cmd) |
786 | #define BB_EXECLP(prog,cmd,...) \ |
787 | execlp((find_applet_by_name(prog) >= 0) ? CONFIG_BUSYBOX_EXEC_PATH : prog, \ |
788 | cmd, __VA_ARGS__) |
789 | #else |
790 | #define BB_EXECVP(prog,cmd) execvp(prog,cmd) |
791 | #define BB_EXECLP(prog,cmd,...) execlp(prog,cmd, __VA_ARGS__) |
792 | #endif |
793 | |
794 | /* NOMMU friendy fork+exec */ |
795 | pid_t spawn(char **argv) FAST_FUNC; |
796 | pid_t xspawn(char **argv) FAST_FUNC; |
797 | |
798 | pid_t safe_waitpid(pid_t pid, int *wstat, int options) FAST_FUNC; |
799 | /* Unlike waitpid, waits ONLY for one process. |
800 | * It's safe to pass negative 'pids' from failed [v]fork - |
801 | * wait4pid will return -1 (and will not clobber [v]fork's errno). |
802 | * IOW: rc = wait4pid(spawn(argv)); |
803 | * if (rc < 0) bb_perror_msg("%s", argv[0]); |
804 | * if (rc > 0) bb_error_msg("exit code: %d", rc); |
805 | */ |
806 | int wait4pid(pid_t pid) FAST_FUNC; |
807 | pid_t wait_any_nohang(int *wstat) FAST_FUNC; |
808 | /* wait4pid(spawn(argv)) + NOFORK/NOEXEC (if configured) */ |
809 | int spawn_and_wait(char **argv) FAST_FUNC; |
810 | struct nofork_save_area { |
811 | jmp_buf die_jmp; |
812 | const char *applet_name; |
813 | int xfunc_error_retval; |
814 | uint32_t option_mask32; |
815 | int die_sleep; |
816 | smallint saved; |
817 | }; |
818 | void save_nofork_data(struct nofork_save_area *save) FAST_FUNC; |
819 | void restore_nofork_data(struct nofork_save_area *save) FAST_FUNC; |
820 | /* Does NOT check that applet is NOFORK, just blindly runs it */ |
821 | int run_nofork_applet(int applet_no, char **argv) FAST_FUNC; |
822 | int run_nofork_applet_prime(struct nofork_save_area *old, int applet_no, char **argv) FAST_FUNC; |
823 | |
824 | /* Helpers for daemonization. |
825 | * |
826 | * bb_daemonize(flags) = daemonize, does not compile on NOMMU |
827 | * |
828 | * bb_daemonize_or_rexec(flags, argv) = daemonizes on MMU (and ignores argv), |
829 | * rexec's itself on NOMMU with argv passed as command line. |
830 | * Thus bb_daemonize_or_rexec may cause your <applet>_main() to be re-executed |
831 | * from the start. (It will detect it and not reexec again second time). |
832 | * You have to audit carefully that you don't do something twice as a result |
833 | * (opening files/sockets, parsing config files etc...)! |
834 | * |
835 | * Both of the above will redirect fd 0,1,2 to /dev/null and drop ctty |
836 | * (will do setsid()). |
837 | * |
838 | * fork_or_rexec(argv) = bare-bones "fork" on MMU, |
839 | * "vfork + re-exec ourself" on NOMMU. No fd redirection, no setsid(). |
840 | * On MMU ignores argv. |
841 | * |
842 | * Helper for network daemons in foreground mode: |
843 | * |
844 | * bb_sanitize_stdio() = make sure that fd 0,1,2 are opened by opening them |
845 | * to /dev/null if they are not. |
846 | */ |
847 | enum { |
848 | DAEMON_CHDIR_ROOT = 1, |
849 | DAEMON_DEVNULL_STDIO = 2, |
850 | DAEMON_CLOSE_EXTRA_FDS = 4, |
851 | DAEMON_ONLY_SANITIZE = 8, /* internal use */ |
852 | }; |
853 | #if BB_MMU |
854 | pid_t fork_or_rexec(void) FAST_FUNC; |
855 | enum { re_execed = 0 }; |
856 | # define fork_or_rexec(argv) fork_or_rexec() |
857 | # define bb_daemonize_or_rexec(flags, argv) bb_daemonize_or_rexec(flags) |
858 | # define bb_daemonize(flags) bb_daemonize_or_rexec(flags, bogus) |
859 | #else |
860 | void re_exec(char **argv) NORETURN FAST_FUNC; |
861 | pid_t fork_or_rexec(char **argv) FAST_FUNC; |
862 | extern bool re_execed; |
863 | int BUG_fork_is_unavailable_on_nommu(void) FAST_FUNC; |
864 | int BUG_daemon_is_unavailable_on_nommu(void) FAST_FUNC; |
865 | void BUG_bb_daemonize_is_unavailable_on_nommu(void) FAST_FUNC; |
866 | # define fork() BUG_fork_is_unavailable_on_nommu() |
867 | # define daemon(a,b) BUG_daemon_is_unavailable_on_nommu() |
868 | # define bb_daemonize(a) BUG_bb_daemonize_is_unavailable_on_nommu() |
869 | #endif |
870 | void bb_daemonize_or_rexec(int flags, char **argv) FAST_FUNC; |
871 | void bb_sanitize_stdio(void) FAST_FUNC; |
872 | /* Clear dangerous stuff, set PATH. Return 1 if was run by different user. */ |
873 | int sanitize_env_if_suid(void) FAST_FUNC; |
874 | |
875 | |
876 | char* single_argv(char **argv) FAST_FUNC; |
877 | extern const char *const bb_argv_dash[]; /* "-", NULL */ |
878 | extern const char *opt_complementary; |
879 | #if ENABLE_LONG_OPTS || ENABLE_FEATURE_GETOPT_LONG |
880 | #define No_argument "\0" |
881 | #define Required_argument "\001" |
882 | #define Optional_argument "\002" |
883 | extern const char *applet_long_options; |
884 | #endif |
885 | extern uint32_t option_mask32; |
886 | extern uint32_t getopt32(char **argv, const char *applet_opts, ...) FAST_FUNC; |
887 | |
888 | |
889 | typedef struct llist_t { |
890 | char *data; |
891 | struct llist_t *link; |
892 | } llist_t; |
893 | void llist_add_to(llist_t **old_head, void *data) FAST_FUNC; |
894 | void llist_add_to_end(llist_t **list_head, void *data) FAST_FUNC; |
895 | void *llist_pop(llist_t **elm) FAST_FUNC; |
896 | void llist_unlink(llist_t **head, llist_t *elm) FAST_FUNC; |
897 | void llist_free(llist_t *elm, void (*freeit)(void *data)) FAST_FUNC; |
898 | llist_t *llist_rev(llist_t *list) FAST_FUNC; |
899 | llist_t *llist_find_str(llist_t *first, const char *str) FAST_FUNC; |
900 | /* BTW, surprisingly, changing API to |
901 | * llist_t *llist_add_to(llist_t *old_head, void *data) |
902 | * etc does not result in smaller code... */ |
903 | |
904 | /* start_stop_daemon and udhcpc are special - they want |
905 | * to create pidfiles regardless of FEATURE_PIDFILE */ |
906 | #if ENABLE_FEATURE_PIDFILE || defined(WANT_PIDFILE) |
907 | /* True only if we created pidfile which is *file*, not /dev/null etc */ |
908 | extern smallint wrote_pidfile; |
909 | void write_pidfile(const char *path) FAST_FUNC; |
910 | #define remove_pidfile(path) do { if (wrote_pidfile) unlink(path); } while (0) |
911 | #else |
912 | enum { wrote_pidfile = 0 }; |
913 | #define write_pidfile(path) ((void)0) |
914 | #define remove_pidfile(path) ((void)0) |
915 | #endif |
916 | |
917 | enum { |
918 | LOGMODE_NONE = 0, |
919 | LOGMODE_STDIO = (1 << 0), |
920 | LOGMODE_SYSLOG = (1 << 1) * ENABLE_FEATURE_SYSLOG, |
921 | LOGMODE_BOTH = LOGMODE_SYSLOG + LOGMODE_STDIO, |
922 | }; |
923 | extern const char *msg_eol; |
924 | extern smallint logmode; |
925 | extern int die_sleep; |
926 | extern int xfunc_error_retval; |
927 | extern jmp_buf die_jmp; |
928 | extern void xfunc_die(void) NORETURN FAST_FUNC; |
929 | extern void bb_show_usage(void) NORETURN FAST_FUNC; |
930 | extern void bb_error_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2))) FAST_FUNC; |
931 | extern void bb_error_msg_and_die(const char *s, ...) __attribute__ ((noreturn, format (printf, 1, 2))) FAST_FUNC; |
932 | extern void bb_perror_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2))) FAST_FUNC; |
933 | extern void bb_simple_perror_msg(const char *s) FAST_FUNC; |
934 | extern void bb_perror_msg_and_die(const char *s, ...) __attribute__ ((noreturn, format (printf, 1, 2))) FAST_FUNC; |
935 | extern void bb_simple_perror_msg_and_die(const char *s) NORETURN FAST_FUNC; |
936 | extern void bb_herror_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2))) FAST_FUNC; |
937 | extern void bb_herror_msg_and_die(const char *s, ...) __attribute__ ((noreturn, format (printf, 1, 2))) FAST_FUNC; |
938 | extern void bb_perror_nomsg_and_die(void) NORETURN FAST_FUNC; |
939 | extern void bb_perror_nomsg(void) FAST_FUNC; |
940 | extern void bb_info_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2))) FAST_FUNC; |
941 | extern void bb_verror_msg(const char *s, va_list p, const char *strerr) FAST_FUNC; |
942 | |
943 | /* We need to export XXX_main from libbusybox |
944 | * only if we build "individual" binaries |
945 | */ |
946 | #if ENABLE_FEATURE_INDIVIDUAL |
947 | #define MAIN_EXTERNALLY_VISIBLE EXTERNALLY_VISIBLE |
948 | #else |
949 | #define MAIN_EXTERNALLY_VISIBLE |
950 | #endif |
951 | |
952 | |
953 | /* Applets which are useful from another applets */ |
954 | int bb_cat(char** argv); |
955 | /* If shell needs them, they exist even if not enabled as applets */ |
956 | int echo_main(int argc, char** argv) IF_ECHO(MAIN_EXTERNALLY_VISIBLE); |
957 | int printf_main(int argc, char **argv) IF_PRINTF(MAIN_EXTERNALLY_VISIBLE); |
958 | int test_main(int argc, char **argv) IF_TEST(MAIN_EXTERNALLY_VISIBLE); |
959 | int kill_main(int argc, char **argv) IF_KILL(MAIN_EXTERNALLY_VISIBLE); |
960 | /* Similar, but used by chgrp, not shell */ |
961 | int chown_main(int argc, char **argv) IF_CHOWN(MAIN_EXTERNALLY_VISIBLE); |
962 | /* Used by ftpd */ |
963 | int ls_main(int argc, char **argv) IF_LS(MAIN_EXTERNALLY_VISIBLE); |
964 | /* Don't need IF_xxx() guard for these */ |
965 | int gunzip_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
966 | int bunzip2_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
967 | |
968 | #if ENABLE_ROUTE |
969 | void bb_displayroutes(int noresolve, int netstatfmt) FAST_FUNC; |
970 | #endif |
971 | |
972 | |
973 | /* Networking */ |
974 | int create_icmp_socket(void) FAST_FUNC; |
975 | int create_icmp6_socket(void) FAST_FUNC; |
976 | /* interface.c */ |
977 | /* This structure defines protocol families and their handlers. */ |
978 | struct aftype { |
979 | const char *name; |
980 | const char *title; |
981 | int af; |
982 | int alen; |
983 | char* FAST_FUNC (*print)(unsigned char *); |
984 | const char* FAST_FUNC (*sprint)(struct sockaddr *, int numeric); |
985 | int FAST_FUNC (*input)(/*int type,*/ const char *bufp, struct sockaddr *); |
986 | void FAST_FUNC (*herror)(char *text); |
987 | int FAST_FUNC (*rprint)(int options); |
988 | int FAST_FUNC (*rinput)(int typ, int ext, char **argv); |
989 | /* may modify src */ |
990 | int FAST_FUNC (*getmask)(char *src, struct sockaddr *mask, char *name); |
991 | }; |
992 | /* This structure defines hardware protocols and their handlers. */ |
993 | struct hwtype { |
994 | const char *name; |
995 | const char *title; |
996 | int type; |
997 | int alen; |
998 | char* FAST_FUNC (*print)(unsigned char *); |
999 | int FAST_FUNC (*input)(const char *, struct sockaddr *); |
1000 | int FAST_FUNC (*activate)(int fd); |
1001 | int suppress_null_addr; |
1002 | }; |
1003 | extern smallint interface_opt_a; |
1004 | int display_interfaces(char *ifname) FAST_FUNC; |
1005 | #if ENABLE_FEATURE_HWIB |
1006 | int in_ib(const char *bufp, struct sockaddr *sap) FAST_FUNC; |
1007 | #else |
1008 | #define in_ib(a, b) 1 /* fail */ |
1009 | #endif |
1010 | const struct aftype *get_aftype(const char *name) FAST_FUNC; |
1011 | const struct hwtype *get_hwtype(const char *name) FAST_FUNC; |
1012 | const struct hwtype *get_hwntype(int type) FAST_FUNC; |
1013 | |
1014 | |
1015 | #ifndef BUILD_INDIVIDUAL |
1016 | extern int find_applet_by_name(const char *name) FAST_FUNC; |
1017 | /* Returns only if applet is not found. */ |
1018 | extern void run_applet_and_exit(const char *name, char **argv) FAST_FUNC; |
1019 | extern void run_applet_no_and_exit(int a, char **argv) NORETURN FAST_FUNC; |
1020 | #endif |
1021 | |
1022 | #ifdef HAVE_MNTENT_H |
1023 | extern int match_fstype(const struct mntent *mt, const char *fstypes) FAST_FUNC; |
1024 | extern struct mntent *find_mount_point(const char *name, int subdir_too) FAST_FUNC; |
1025 | #endif |
1026 | extern void erase_mtab(const char * name) FAST_FUNC; |
1027 | extern unsigned int tty_baud_to_value(speed_t speed) FAST_FUNC; |
1028 | extern speed_t tty_value_to_baud(unsigned int value) FAST_FUNC; |
1029 | #if ENABLE_DESKTOP |
1030 | extern void bb_warn_ignoring_args(char *arg) FAST_FUNC; |
1031 | #else |
1032 | # define bb_warn_ignoring_args(arg) ((void)0) |
1033 | #endif |
1034 | |
1035 | extern int get_linux_version_code(void) FAST_FUNC; |
1036 | |
1037 | extern char *query_loop(const char *device) FAST_FUNC; |
1038 | extern int del_loop(const char *device) FAST_FUNC; |
1039 | /* If *devname is not NULL, use that name, otherwise try to find free one, |
1040 | * malloc and return it in *devname. |
1041 | * return value: 1: read-only loopdev was setup, 0: rw, < 0: error */ |
1042 | extern int set_loop(char **devname, const char *file, unsigned long long offset) FAST_FUNC; |
1043 | |
1044 | /* Like bb_ask below, but asks on stdin with no timeout. */ |
1045 | char *bb_ask_stdin(const char * prompt) FAST_FUNC; |
1046 | //TODO: pass buf pointer or return allocated buf (avoid statics)? |
1047 | char *bb_ask(const int fd, int timeout, const char * prompt) FAST_FUNC; |
1048 | int bb_ask_confirmation(void) FAST_FUNC; |
1049 | |
1050 | int bb_parse_mode(const char* s, mode_t* theMode) FAST_FUNC; |
1051 | |
1052 | /* |
1053 | * Config file parser |
1054 | */ |
1055 | enum { |
1056 | PARSE_COLLAPSE = 0x00010000, // treat consecutive delimiters as one |
1057 | PARSE_TRIM = 0x00020000, // trim leading and trailing delimiters |
1058 | // TODO: COLLAPSE and TRIM seem to always go in pair |
1059 | PARSE_GREEDY = 0x00040000, // last token takes entire remainder of the line |
1060 | PARSE_MIN_DIE = 0x00100000, // die if < min tokens found |
1061 | // keep a copy of current line |
1062 | PARSE_KEEP_COPY = 0x00200000 * ENABLE_FEATURE_CROND_D, |
1063 | // PARSE_ESCAPE = 0x00400000, // process escape sequences in tokens |
1064 | // NORMAL is: |
1065 | // * remove leading and trailing delimiters and collapse |
1066 | // multiple delimiters into one |
1067 | // * warn and continue if less than mintokens delimiters found |
1068 | // * grab everything into last token |
1069 | PARSE_NORMAL = PARSE_COLLAPSE | PARSE_TRIM | PARSE_GREEDY, |
1070 | }; |
1071 | typedef struct parser_t { |
1072 | FILE *fp; |
1073 | char *line; |
1074 | char *data; |
1075 | int lineno; |
1076 | } parser_t; |
1077 | parser_t* config_open(const char *filename) FAST_FUNC; |
1078 | parser_t* config_open2(const char *filename, FILE* FAST_FUNC (*fopen_func)(const char *path)) FAST_FUNC; |
1079 | int config_read(parser_t *parser, char **tokens, unsigned flags, const char *delims) FAST_FUNC; |
1080 | #define config_read(parser, tokens, max, min, str, flags) \ |
1081 | config_read(parser, tokens, ((flags) | (((min) & 0xFF) << 8) | ((max) & 0xFF)), str) |
1082 | void config_close(parser_t *parser) FAST_FUNC; |
1083 | |
1084 | /* Concatenate path and filename to new allocated buffer. |
1085 | * Add "/" only as needed (no duplicate "//" are produced). |
1086 | * If path is NULL, it is assumed to be "/". |
1087 | * filename should not be NULL. */ |
1088 | char *concat_path_file(const char *path, const char *filename) FAST_FUNC; |
1089 | char *concat_subpath_file(const char *path, const char *filename) FAST_FUNC; |
1090 | const char *bb_basename(const char *name) FAST_FUNC; |
1091 | /* NB: can violate const-ness (similarly to strchr) */ |
1092 | char *last_char_is(const char *s, int c) FAST_FUNC; |
1093 | |
1094 | |
1095 | int bb_make_directory(char *path, long mode, int flags) FAST_FUNC; |
1096 | |
1097 | int get_signum(const char *name) FAST_FUNC; |
1098 | const char *get_signame(int number) FAST_FUNC; |
1099 | void print_signames(void) FAST_FUNC; |
1100 | |
1101 | char *bb_simplify_path(const char *path) FAST_FUNC; |
1102 | /* Returns ptr to NUL */ |
1103 | char *bb_simplify_abs_path_inplace(char *path) FAST_FUNC; |
1104 | |
1105 | #define FAIL_DELAY 3 |
1106 | extern void bb_do_delay(int seconds) FAST_FUNC; |
1107 | extern void change_identity(const struct passwd *pw) FAST_FUNC; |
1108 | extern void run_shell(const char *shell, int loginshell, const char *command, const char **additional_args) NORETURN FAST_FUNC; |
1109 | extern void run_shell(const char *shell, int loginshell, const char *command, const char **additional_args) FAST_FUNC; |
1110 | #if ENABLE_SELINUX |
1111 | extern void renew_current_security_context(void) FAST_FUNC; |
1112 | extern void set_current_security_context(security_context_t sid) FAST_FUNC; |
1113 | extern context_t set_security_context_component(security_context_t cur_context, |
1114 | char *user, char *role, char *type, char *range) FAST_FUNC; |
1115 | extern void setfscreatecon_or_die(security_context_t scontext) FAST_FUNC; |
1116 | extern void selinux_preserve_fcontext(int fdesc) FAST_FUNC; |
1117 | #else |
1118 | #define selinux_preserve_fcontext(fdesc) ((void)0) |
1119 | #endif |
1120 | extern void selinux_or_die(void) FAST_FUNC; |
1121 | extern int restricted_shell(const char *shell) FAST_FUNC; |
1122 | |
1123 | /* setup_environment: |
1124 | * if clear_env = 1: cd(pw->pw_dir), clear environment, then set |
1125 | * TERM=(old value) |
1126 | * USER=pw->pw_name, LOGNAME=pw->pw_name |
1127 | * PATH=bb_default_[root_]path |
1128 | * HOME=pw->pw_dir |
1129 | * SHELL=shell |
1130 | * else if change_env = 1: |
1131 | * if not root (if pw->pw_uid != 0): |
1132 | * USER=pw->pw_name, LOGNAME=pw->pw_name |
1133 | * HOME=pw->pw_dir |
1134 | * SHELL=shell |
1135 | * else does nothing |
1136 | */ |
1137 | extern void setup_environment(const char *shell, int clear_env, int change_env, const struct passwd *pw) FAST_FUNC; |
1138 | extern int correct_password(const struct passwd *pw) FAST_FUNC; |
1139 | /* Returns a malloced string */ |
1140 | #if !ENABLE_USE_BB_CRYPT |
1141 | #define pw_encrypt(clear, salt, cleanup) pw_encrypt(clear, salt) |
1142 | #endif |
1143 | extern char *pw_encrypt(const char *clear, const char *salt, int cleanup) FAST_FUNC; |
1144 | extern int obscure(const char *old, const char *newval, const struct passwd *pwdp) FAST_FUNC; |
1145 | /* rnd is additional random input. New one is returned. |
1146 | * Useful if you call crypt_make_salt many times in a row: |
1147 | * rnd = crypt_make_salt(buf1, 4, 0); |
1148 | * rnd = crypt_make_salt(buf2, 4, rnd); |
1149 | * rnd = crypt_make_salt(buf3, 4, rnd); |
1150 | * (otherwise we risk having same salt generated) |
1151 | */ |
1152 | extern int crypt_make_salt(char *p, int cnt, int rnd) FAST_FUNC; |
1153 | |
1154 | /* Returns number of lines changed, or -1 on error */ |
1155 | #if !(ENABLE_FEATURE_ADDUSER_TO_GROUP || ENABLE_FEATURE_DEL_USER_FROM_GROUP) |
1156 | #define update_passwd(filename, username, data, member) \ |
1157 | update_passwd(filename, username, data) |
1158 | #endif |
1159 | extern int update_passwd(const char *filename, |
1160 | const char *username, |
1161 | const char *data, |
1162 | const char *member) FAST_FUNC; |
1163 | |
1164 | int index_in_str_array(const char *const string_array[], const char *key) FAST_FUNC; |
1165 | int index_in_strings(const char *strings, const char *key) FAST_FUNC; |
1166 | int index_in_substr_array(const char *const string_array[], const char *key) FAST_FUNC; |
1167 | int index_in_substrings(const char *strings, const char *key) FAST_FUNC; |
1168 | const char *nth_string(const char *strings, int n) FAST_FUNC; |
1169 | |
1170 | extern void print_login_issue(const char *issue_file, const char *tty) FAST_FUNC; |
1171 | extern void print_login_prompt(void) FAST_FUNC; |
1172 | |
1173 | char *xmalloc_ttyname(int fd) FAST_FUNC RETURNS_MALLOC; |
1174 | /* NB: typically you want to pass fd 0, not 1. Think 'applet | grep something' */ |
1175 | int get_terminal_width_height(int fd, unsigned *width, unsigned *height) FAST_FUNC; |
1176 | |
1177 | int tcsetattr_stdin_TCSANOW(const struct termios *tp) FAST_FUNC; |
1178 | |
1179 | /* NB: "unsigned request" is crucial! "int request" will break some arches! */ |
1180 | int ioctl_or_perror(int fd, unsigned request, void *argp, const char *fmt,...) __attribute__ ((format (printf, 4, 5))) FAST_FUNC; |
1181 | int ioctl_or_perror_and_die(int fd, unsigned request, void *argp, const char *fmt,...) __attribute__ ((format (printf, 4, 5))) FAST_FUNC; |
1182 | #if ENABLE_IOCTL_HEX2STR_ERROR |
1183 | int bb_ioctl_or_warn(int fd, unsigned request, void *argp, const char *ioctl_name) FAST_FUNC; |
1184 | int bb_xioctl(int fd, unsigned request, void *argp, const char *ioctl_name) FAST_FUNC; |
1185 | #define ioctl_or_warn(fd,request,argp) bb_ioctl_or_warn(fd,request,argp,#request) |
1186 | #define xioctl(fd,request,argp) bb_xioctl(fd,request,argp,#request) |
1187 | #else |
1188 | int bb_ioctl_or_warn(int fd, unsigned request, void *argp) FAST_FUNC; |
1189 | int bb_xioctl(int fd, unsigned request, void *argp) FAST_FUNC; |
1190 | #define ioctl_or_warn(fd,request,argp) bb_ioctl_or_warn(fd,request,argp) |
1191 | #define xioctl(fd,request,argp) bb_xioctl(fd,request,argp) |
1192 | #endif |
1193 | |
1194 | char *is_in_ino_dev_hashtable(const struct stat *statbuf) FAST_FUNC; |
1195 | void add_to_ino_dev_hashtable(const struct stat *statbuf, const char *name) FAST_FUNC; |
1196 | void reset_ino_dev_hashtable(void) FAST_FUNC; |
1197 | #ifdef __GLIBC__ |
1198 | /* At least glibc has horrendously large inline for this, so wrap it */ |
1199 | unsigned long long bb_makedev(unsigned int major, unsigned int minor) FAST_FUNC; |
1200 | #undef makedev |
1201 | #define makedev(a,b) bb_makedev(a,b) |
1202 | #endif |
1203 | |
1204 | |
1205 | /* "Keycodes" that report an escape sequence. |
1206 | * We use something which fits into signed char, |
1207 | * yet doesn't represent any valid Unicode character. |
1208 | * Also, -1 is reserved for error indication and we don't use it. */ |
1209 | enum { |
1210 | KEYCODE_UP = -2, |
1211 | KEYCODE_DOWN = -3, |
1212 | KEYCODE_RIGHT = -4, |
1213 | KEYCODE_LEFT = -5, |
1214 | KEYCODE_HOME = -6, |
1215 | KEYCODE_END = -7, |
1216 | KEYCODE_INSERT = -8, |
1217 | KEYCODE_DELETE = -9, |
1218 | KEYCODE_PAGEUP = -10, |
1219 | KEYCODE_PAGEDOWN = -11, |
1220 | |
1221 | KEYCODE_CTRL_UP = KEYCODE_UP & ~0x40, |
1222 | KEYCODE_CTRL_DOWN = KEYCODE_DOWN & ~0x40, |
1223 | KEYCODE_CTRL_RIGHT = KEYCODE_RIGHT & ~0x40, |
1224 | KEYCODE_CTRL_LEFT = KEYCODE_LEFT & ~0x40, |
1225 | #if 0 |
1226 | KEYCODE_FUN1 = -12, |
1227 | KEYCODE_FUN2 = -13, |
1228 | KEYCODE_FUN3 = -14, |
1229 | KEYCODE_FUN4 = -15, |
1230 | KEYCODE_FUN5 = -16, |
1231 | KEYCODE_FUN6 = -17, |
1232 | KEYCODE_FUN7 = -18, |
1233 | KEYCODE_FUN8 = -19, |
1234 | KEYCODE_FUN9 = -20, |
1235 | KEYCODE_FUN10 = -21, |
1236 | KEYCODE_FUN11 = -22, |
1237 | KEYCODE_FUN12 = -23, |
1238 | #endif |
1239 | KEYCODE_CURSOR_POS = -0x100, /* 0xfff..fff00 */ |
1240 | /* How long is the longest ESC sequence we know? |
1241 | * We want it big enough to be able to contain |
1242 | * cursor position sequence "ESC [ 9999 ; 9999 R" |
1243 | */ |
1244 | KEYCODE_BUFFER_SIZE = 16 |
1245 | }; |
1246 | /* Note: fd may be in blocking or non-blocking mode, both make sense. |
1247 | * For one, less uses non-blocking mode. |
1248 | * Only the first read syscall inside read_key may block indefinitely |
1249 | * (unless fd is in non-blocking mode), |
1250 | * subsequent reads will time out after a few milliseconds. |
1251 | * Return of -1 means EOF or error (errno == 0 on EOF). |
1252 | * buffer[0] is used as a counter of buffered chars and must be 0 |
1253 | * on first call. |
1254 | */ |
1255 | int64_t read_key(int fd, char *buffer) FAST_FUNC; |
1256 | |
1257 | |
1258 | #if ENABLE_FEATURE_EDITING |
1259 | /* It's NOT just ENABLEd or disabled. It's a number: */ |
1260 | # ifdef CONFIG_FEATURE_EDITING_HISTORY |
1261 | # define MAX_HISTORY (CONFIG_FEATURE_EDITING_HISTORY + 0) |
1262 | # else |
1263 | # define MAX_HISTORY 0 |
1264 | # endif |
1265 | typedef struct line_input_t { |
1266 | int flags; |
1267 | const char *path_lookup; |
1268 | # if MAX_HISTORY |
1269 | int cnt_history; |
1270 | int cur_history; |
1271 | # if ENABLE_FEATURE_EDITING_SAVEHISTORY |
1272 | unsigned cnt_history_in_file; |
1273 | const char *hist_file; |
1274 | # endif |
1275 | char *history[MAX_HISTORY + 1]; |
1276 | # endif |
1277 | } line_input_t; |
1278 | enum { |
1279 | DO_HISTORY = 1 * (MAX_HISTORY > 0), |
1280 | SAVE_HISTORY = 2 * (MAX_HISTORY > 0) * ENABLE_FEATURE_EDITING_SAVEHISTORY, |
1281 | TAB_COMPLETION = 4 * ENABLE_FEATURE_TAB_COMPLETION, |
1282 | USERNAME_COMPLETION = 8 * ENABLE_FEATURE_USERNAME_COMPLETION, |
1283 | VI_MODE = 0x10 * ENABLE_FEATURE_EDITING_VI, |
1284 | WITH_PATH_LOOKUP = 0x20, |
1285 | FOR_SHELL = DO_HISTORY | SAVE_HISTORY | TAB_COMPLETION | USERNAME_COMPLETION, |
1286 | }; |
1287 | line_input_t *new_line_input_t(int flags) FAST_FUNC; |
1288 | /* So far static: void free_line_input_t(line_input_t *n) FAST_FUNC; */ |
1289 | /* maxsize must be >= 2. |
1290 | * Returns: |
1291 | * -1 on read errors or EOF, or on bare Ctrl-D, |
1292 | * 0 on ctrl-C (the line entered is still returned in 'command'), |
1293 | * >0 length of input string, including terminating '\n' |
1294 | */ |
1295 | int read_line_input(const char* prompt, char* command, int maxsize, line_input_t *state) FAST_FUNC; |
1296 | #else |
1297 | #define MAX_HISTORY 0 |
1298 | int read_line_input(const char* prompt, char* command, int maxsize) FAST_FUNC; |
1299 | #define read_line_input(prompt, command, maxsize, state) \ |
1300 | read_line_input(prompt, command, maxsize) |
1301 | #endif |
1302 | |
1303 | |
1304 | #ifndef COMM_LEN |
1305 | # ifdef TASK_COMM_LEN |
1306 | enum { COMM_LEN = TASK_COMM_LEN }; |
1307 | # else |
1308 | /* synchronize with sizeof(task_struct.comm) in /usr/include/linux/sched.h */ |
1309 | enum { COMM_LEN = 16 }; |
1310 | # endif |
1311 | #endif |
1312 | typedef struct procps_status_t { |
1313 | DIR *dir; |
1314 | IF_FEATURE_SHOW_THREADS(DIR *task_dir;) |
1315 | uint8_t shift_pages_to_bytes; |
1316 | uint8_t shift_pages_to_kb; |
1317 | /* Fields are set to 0/NULL if failed to determine (or not requested) */ |
1318 | uint16_t argv_len; |
1319 | char *argv0; |
1320 | char *exe; |
1321 | IF_SELINUX(char *context;) |
1322 | /* Everything below must contain no ptrs to malloc'ed data: |
1323 | * it is memset(0) for each process in procps_scan() */ |
1324 | unsigned long vsz, rss; /* we round it to kbytes */ |
1325 | unsigned long stime, utime; |
1326 | unsigned long start_time; |
1327 | unsigned pid; |
1328 | unsigned ppid; |
1329 | unsigned pgid; |
1330 | unsigned sid; |
1331 | unsigned uid; |
1332 | unsigned gid; |
1333 | #if ENABLE_FEATURE_PS_ADDITIONAL_COLUMNS |
1334 | unsigned ruid; |
1335 | unsigned rgid; |
1336 | int niceness; |
1337 | #endif |
1338 | unsigned tty_major,tty_minor; |
1339 | #if ENABLE_FEATURE_TOPMEM |
1340 | unsigned long mapped_rw; |
1341 | unsigned long mapped_ro; |
1342 | unsigned long shared_clean; |
1343 | unsigned long shared_dirty; |
1344 | unsigned long private_clean; |
1345 | unsigned long private_dirty; |
1346 | unsigned long stack; |
1347 | #endif |
1348 | char state[4]; |
1349 | /* basename of executable in exec(2), read from /proc/N/stat |
1350 | * (if executable is symlink or script, it is NOT replaced |
1351 | * by link target or interpreter name) */ |
1352 | char comm[COMM_LEN]; |
1353 | /* user/group? - use passwd/group parsing functions */ |
1354 | #if ENABLE_FEATURE_TOP_SMP_PROCESS |
1355 | int last_seen_on_cpu; |
1356 | #endif |
1357 | } procps_status_t; |
1358 | /* flag bits for procps_scan(xx, flags) calls */ |
1359 | enum { |
1360 | PSSCAN_PID = 1 << 0, |
1361 | PSSCAN_PPID = 1 << 1, |
1362 | PSSCAN_PGID = 1 << 2, |
1363 | PSSCAN_SID = 1 << 3, |
1364 | PSSCAN_UIDGID = 1 << 4, |
1365 | PSSCAN_COMM = 1 << 5, |
1366 | /* PSSCAN_CMD = 1 << 6, - use read_cmdline instead */ |
1367 | PSSCAN_ARGV0 = 1 << 7, |
1368 | PSSCAN_EXE = 1 << 8, |
1369 | PSSCAN_STATE = 1 << 9, |
1370 | PSSCAN_VSZ = 1 << 10, |
1371 | PSSCAN_RSS = 1 << 11, |
1372 | PSSCAN_STIME = 1 << 12, |
1373 | PSSCAN_UTIME = 1 << 13, |
1374 | PSSCAN_TTY = 1 << 14, |
1375 | PSSCAN_SMAPS = (1 << 15) * ENABLE_FEATURE_TOPMEM, |
1376 | /* NB: used by find_pid_by_name(). Any applet using it |
1377 | * needs to be mentioned here. */ |
1378 | PSSCAN_ARGVN = (1 << 16) * (ENABLE_KILLALL |
1379 | || ENABLE_PGREP || ENABLE_PKILL |
1380 | || ENABLE_PIDOF |
1381 | || ENABLE_SESTATUS |
1382 | ), |
1383 | PSSCAN_CONTEXT = (1 << 17) * ENABLE_SELINUX, |
1384 | PSSCAN_START_TIME = 1 << 18, |
1385 | PSSCAN_CPU = (1 << 19) * ENABLE_FEATURE_TOP_SMP_PROCESS, |
1386 | PSSCAN_NICE = (1 << 20) * ENABLE_FEATURE_PS_ADDITIONAL_COLUMNS, |
1387 | PSSCAN_RUIDGID = (1 << 21) * ENABLE_FEATURE_PS_ADDITIONAL_COLUMNS, |
1388 | PSSCAN_TASKS = (1 << 22) * ENABLE_FEATURE_SHOW_THREADS, |
1389 | /* These are all retrieved from proc/NN/stat in one go: */ |
1390 | PSSCAN_STAT = PSSCAN_PPID | PSSCAN_PGID | PSSCAN_SID |
1391 | /**/ | PSSCAN_COMM | PSSCAN_STATE |
1392 | /**/ | PSSCAN_VSZ | PSSCAN_RSS |
1393 | /**/ | PSSCAN_STIME | PSSCAN_UTIME | PSSCAN_START_TIME |
1394 | /**/ | PSSCAN_TTY | PSSCAN_NICE |
1395 | /**/ | PSSCAN_CPU |
1396 | }; |
1397 | //procps_status_t* alloc_procps_scan(void) FAST_FUNC; |
1398 | void free_procps_scan(procps_status_t* sp) FAST_FUNC; |
1399 | procps_status_t* procps_scan(procps_status_t* sp, int flags) FAST_FUNC; |
1400 | /* Format cmdline (up to col chars) into char buf[size] */ |
1401 | /* Puts [comm] if cmdline is empty (-> process is a kernel thread) */ |
1402 | void read_cmdline(char *buf, int size, unsigned pid, const char *comm) FAST_FUNC; |
1403 | pid_t *find_pid_by_name(const char* procName) FAST_FUNC; |
1404 | pid_t *pidlist_reverse(pid_t *pidList) FAST_FUNC; |
1405 | |
1406 | |
1407 | extern const char bb_uuenc_tbl_base64[]; |
1408 | extern const char bb_uuenc_tbl_std[]; |
1409 | void bb_uuencode(char *store, const void *s, int length, const char *tbl) FAST_FUNC; |
1410 | |
1411 | typedef struct sha1_ctx_t { |
1412 | uint32_t hash[8]; /* 5, +3 elements for sha256 */ |
1413 | uint64_t total64; |
1414 | uint8_t wbuffer[64]; /* NB: always correctly aligned for uint64_t */ |
1415 | void (*process_block)(struct sha1_ctx_t*) FAST_FUNC; |
1416 | } sha1_ctx_t; |
1417 | void sha1_begin(sha1_ctx_t *ctx) FAST_FUNC; |
1418 | void sha1_hash(const void *data, size_t length, sha1_ctx_t *ctx) FAST_FUNC; |
1419 | void sha1_end(void *resbuf, sha1_ctx_t *ctx) FAST_FUNC; |
1420 | typedef struct sha1_ctx_t sha256_ctx_t; |
1421 | void sha256_begin(sha256_ctx_t *ctx) FAST_FUNC; |
1422 | #define sha256_hash sha1_hash |
1423 | #define sha256_end sha1_end |
1424 | typedef struct sha512_ctx_t { |
1425 | uint64_t hash[8]; |
1426 | uint64_t total64[2]; |
1427 | uint8_t wbuffer[128]; /* NB: always correctly aligned for uint64_t */ |
1428 | } sha512_ctx_t; |
1429 | void sha512_begin(sha512_ctx_t *ctx) FAST_FUNC; |
1430 | void sha512_hash(const void *buffer, size_t len, sha512_ctx_t *ctx) FAST_FUNC; |
1431 | void sha512_end(void *resbuf, sha512_ctx_t *ctx) FAST_FUNC; |
1432 | #if 1 |
1433 | typedef struct md5_ctx_t { |
1434 | uint32_t A; |
1435 | uint32_t B; |
1436 | uint32_t C; |
1437 | uint32_t D; |
1438 | uint64_t total; |
1439 | uint32_t buflen; |
1440 | char buffer[128]; |
1441 | } md5_ctx_t; |
1442 | #else |
1443 | /* libbb/md5prime.c uses a bit different one: */ |
1444 | typedef struct md5_ctx_t { |
1445 | uint32_t state[4]; /* state (ABCD) */ |
1446 | uint32_t count[2]; /* number of bits, modulo 2^64 (lsb first) */ |
1447 | unsigned char buffer[64]; /* input buffer */ |
1448 | } md5_ctx_t; |
1449 | #endif |
1450 | void md5_begin(md5_ctx_t *ctx) FAST_FUNC; |
1451 | void md5_hash(const void *data, size_t length, md5_ctx_t *ctx) FAST_FUNC; |
1452 | void md5_end(void *resbuf, md5_ctx_t *ctx) FAST_FUNC; |
1453 | |
1454 | |
1455 | uint32_t *crc32_filltable(uint32_t *tbl256, int endian) FAST_FUNC; |
1456 | |
1457 | typedef struct masks_labels_t { |
1458 | const char *labels; |
1459 | const int masks[]; |
1460 | } masks_labels_t; |
1461 | int print_flags_separated(const int *masks, const char *labels, |
1462 | int flags, const char *separator) FAST_FUNC; |
1463 | int print_flags(const masks_labels_t *ml, int flags) FAST_FUNC; |
1464 | |
1465 | typedef struct bb_progress_t { |
1466 | off_t lastsize; |
1467 | unsigned lastupdate_sec; |
1468 | unsigned start_sec; |
1469 | } bb_progress_t; |
1470 | |
1471 | void bb_progress_init(bb_progress_t *p) FAST_FUNC; |
1472 | void bb_progress_update(bb_progress_t *p, const char *curfile, |
1473 | off_t beg_range, off_t transferred, |
1474 | off_t totalsize) FAST_FUNC; |
1475 | |
1476 | extern const char *applet_name; |
1477 | /* "BusyBox vN.N.N (timestamp or extra_version)" */ |
1478 | extern const char bb_banner[]; |
1479 | extern const char bb_msg_memory_exhausted[]; |
1480 | extern const char bb_msg_invalid_date[]; |
1481 | extern const char bb_msg_read_error[]; |
1482 | extern const char bb_msg_write_error[]; |
1483 | extern const char bb_msg_unknown[]; |
1484 | extern const char bb_msg_can_not_create_raw_socket[]; |
1485 | extern const char bb_msg_perm_denied_are_you_root[]; |
1486 | extern const char bb_msg_you_must_be_root[]; |
1487 | extern const char bb_msg_requires_arg[]; |
1488 | extern const char bb_msg_invalid_arg[]; |
1489 | extern const char bb_msg_standard_input[]; |
1490 | extern const char bb_msg_standard_output[]; |
1491 | |
1492 | extern const char bb_str_default[]; |
1493 | /* NB: (bb_hexdigits_upcase[i] | 0x20) -> lowercase hex digit */ |
1494 | extern const char bb_hexdigits_upcase[]; |
1495 | |
1496 | extern const char bb_path_mtab_file[]; |
1497 | extern const char bb_path_passwd_file[]; |
1498 | extern const char bb_path_shadow_file[]; |
1499 | extern const char bb_path_gshadow_file[]; |
1500 | extern const char bb_path_group_file[]; |
1501 | extern const char bb_path_motd_file[]; |
1502 | extern const char bb_path_wtmp_file[]; |
1503 | extern const char bb_dev_null[]; |
1504 | extern const char bb_busybox_exec_path[]; |
1505 | /* util-linux manpage says /sbin:/bin:/usr/sbin:/usr/bin, |
1506 | * but I want to save a few bytes here */ |
1507 | extern const char bb_PATH_root_path[]; /* "PATH=/sbin:/usr/sbin:/bin:/usr/bin" */ |
1508 | #define bb_default_root_path (bb_PATH_root_path + sizeof("PATH")) |
1509 | #define bb_default_path (bb_PATH_root_path + sizeof("PATH=/sbin:/usr/sbin")) |
1510 | |
1511 | extern const int const_int_0; |
1512 | extern const int const_int_1; |
1513 | |
1514 | |
1515 | /* Providing hard guarantee on minimum size (think of BUFSIZ == 128) */ |
1516 | enum { COMMON_BUFSIZE = (BUFSIZ >= 256*sizeof(void*) ? BUFSIZ+1 : 256*sizeof(void*)) }; |
1517 | extern char bb_common_bufsiz1[COMMON_BUFSIZE]; |
1518 | /* This struct is deliberately not defined. */ |
1519 | /* See docs/keep_data_small.txt */ |
1520 | struct globals; |
1521 | /* '*const' ptr makes gcc optimize code much better. |
1522 | * Magic prevents ptr_to_globals from going into rodata. |
1523 | * If you want to assign a value, use SET_PTR_TO_GLOBALS(x) */ |
1524 | extern struct globals *const ptr_to_globals; |
1525 | /* At least gcc 3.4.6 on mipsel system needs optimization barrier */ |
1526 | #define barrier() __asm__ __volatile__("":::"memory") |
1527 | #define SET_PTR_TO_GLOBALS(x) do { \ |
1528 | (*(struct globals**)&ptr_to_globals) = (void*)(x); \ |
1529 | barrier(); \ |
1530 | } while (0) |
1531 | |
1532 | /* You can change LIBBB_DEFAULT_LOGIN_SHELL, but don't use it, |
1533 | * use bb_default_login_shell and following defines. |
1534 | * If you change LIBBB_DEFAULT_LOGIN_SHELL, |
1535 | * don't forget to change increment constant. */ |
1536 | #define LIBBB_DEFAULT_LOGIN_SHELL "-/bin/sh" |
1537 | extern const char bb_default_login_shell[]; |
1538 | /* "/bin/sh" */ |
1539 | #define DEFAULT_SHELL (bb_default_login_shell+1) |
1540 | /* "sh" */ |
1541 | #define DEFAULT_SHELL_SHORT_NAME (bb_default_login_shell+6) |
1542 | |
1543 | #if ENABLE_FEATURE_DEVFS |
1544 | # define CURRENT_VC "/dev/vc/0" |
1545 | # define VC_1 "/dev/vc/1" |
1546 | # define VC_2 "/dev/vc/2" |
1547 | # define VC_3 "/dev/vc/3" |
1548 | # define VC_4 "/dev/vc/4" |
1549 | # define VC_5 "/dev/vc/5" |
1550 | #if defined(__sh__) || defined(__H8300H__) || defined(__H8300S__) |
1551 | /* Yes, this sucks, but both SH (including sh64) and H8 have a SCI(F) for their |
1552 | respective serial ports .. as such, we can't use the common device paths for |
1553 | these. -- PFM */ |
1554 | # define SC_0 "/dev/ttsc/0" |
1555 | # define SC_1 "/dev/ttsc/1" |
1556 | # define SC_FORMAT "/dev/ttsc/%d" |
1557 | #else |
1558 | # define SC_0 "/dev/tts/0" |
1559 | # define SC_1 "/dev/tts/1" |
1560 | # define SC_FORMAT "/dev/tts/%d" |
1561 | #endif |
1562 | # define VC_FORMAT "/dev/vc/%d" |
1563 | # define LOOP_FORMAT "/dev/loop/%d" |
1564 | # define LOOP_NAMESIZE (sizeof("/dev/loop/") + sizeof(int)*3 + 1) |
1565 | # define LOOP_NAME "/dev/loop/" |
1566 | # define FB_0 "/dev/fb/0" |
1567 | #else |
1568 | # define CURRENT_VC "/dev/tty0" |
1569 | # define VC_1 "/dev/tty1" |
1570 | # define VC_2 "/dev/tty2" |
1571 | # define VC_3 "/dev/tty3" |
1572 | # define VC_4 "/dev/tty4" |
1573 | # define VC_5 "/dev/tty5" |
1574 | #if defined(__sh__) || defined(__H8300H__) || defined(__H8300S__) |
1575 | # define SC_0 "/dev/ttySC0" |
1576 | # define SC_1 "/dev/ttySC1" |
1577 | # define SC_FORMAT "/dev/ttySC%d" |
1578 | #else |
1579 | # define SC_0 "/dev/ttyS0" |
1580 | # define SC_1 "/dev/ttyS1" |
1581 | # define SC_FORMAT "/dev/ttyS%d" |
1582 | #endif |
1583 | # define VC_FORMAT "/dev/tty%d" |
1584 | # define LOOP_FORMAT "/dev/loop%d" |
1585 | # define LOOP_NAMESIZE (sizeof("/dev/loop") + sizeof(int)*3 + 1) |
1586 | # define LOOP_NAME "/dev/loop" |
1587 | # define FB_0 "/dev/fb0" |
1588 | #endif |
1589 | |
1590 | /* The following devices are the same on devfs and non-devfs systems. */ |
1591 | #define CURRENT_TTY "/dev/tty" |
1592 | #define DEV_CONSOLE "/dev/console" |
1593 | |
1594 | |
1595 | #define ARRAY_SIZE(x) ((unsigned)(sizeof(x) / sizeof((x)[0]))) |
1596 | |
1597 | |
1598 | /* We redefine ctype macros. Unicode-correct handling of char types |
1599 | * can't be done with such byte-oriented operations anyway, |
1600 | * we don't lose anything. |
1601 | */ |
1602 | #undef isalnum |
1603 | #undef isalpha |
1604 | #undef isascii |
1605 | #undef isblank |
1606 | #undef iscntrl |
1607 | #undef isdigit |
1608 | #undef isgraph |
1609 | #undef islower |
1610 | #undef isprint |
1611 | #undef ispunct |
1612 | #undef isspace |
1613 | #undef isupper |
1614 | #undef isxdigit |
1615 | #undef toupper |
1616 | #undef tolower |
1617 | |
1618 | /* We save ~500 bytes on isdigit alone. |
1619 | * BTW, x86 likes (unsigned char) cast more than (unsigned). */ |
1620 | |
1621 | /* These work the same for ASCII and Unicode, |
1622 | * assuming no one asks "is this a *Unicode* letter?" using isalpha(letter) */ |
1623 | #define isascii(a) ((unsigned char)(a) <= 0x7f) |
1624 | #define isdigit(a) ((unsigned char)((a) - '0') <= 9) |
1625 | #define isupper(a) ((unsigned char)((a) - 'A') <= ('Z' - 'A')) |
1626 | #define islower(a) ((unsigned char)((a) - 'a') <= ('z' - 'a')) |
1627 | #define isalpha(a) ((unsigned char)(((a)|0x20) - 'a') <= ('z' - 'a')) |
1628 | #define isblank(a) ({ unsigned char bb__isblank = (a); bb__isblank == ' ' || bb__isblank == '\t'; }) |
1629 | #define iscntrl(a) ({ unsigned char bb__iscntrl = (a); bb__iscntrl < ' ' || bb__iscntrl == 0x7f; }) |
1630 | /* In POSIX/C locale isspace is only these chars: "\t\n\v\f\r" and space. |
1631 | * "\t\n\v\f\r" happen to have ASCII codes 9,10,11,12,13. |
1632 | */ |
1633 | #define isspace(a) ({ unsigned char bb__isspace = (a) - 9; bb__isspace == (' ' - 9) || bb__isspace <= (13 - 9); }) |
1634 | // Unsafe wrt NUL: #define ispunct(a) (strchr("!\"#$%&'()*+,-./:;<=>?@[\\]^_`{|}~", (a)) != NULL) |
1635 | #define ispunct(a) (strchrnul("!\"#$%&'()*+,-./:;<=>?@[\\]^_`{|}~", (a))[0]) |
1636 | // Bigger code: #define isalnum(a) ({ unsigned char bb__isalnum = (a) - '0'; bb__isalnum <= 9 || ((bb__isalnum - ('A' - '0')) & 0xdf) <= 25; }) |
1637 | #define isalnum(a) bb_ascii_isalnum(a) |
1638 | static ALWAYS_INLINE int bb_ascii_isalnum(unsigned char a) |
1639 | { |
1640 | unsigned char b = a - '0'; |
1641 | if (b <= 9) |
1642 | return (b <= 9); |
1643 | b = (a|0x20) - 'a'; |
1644 | return b <= 'z' - 'a'; |
1645 | } |
1646 | #define isxdigit(a) bb_ascii_isxdigit(a) |
1647 | static ALWAYS_INLINE int bb_ascii_isxdigit(unsigned char a) |
1648 | { |
1649 | unsigned char b = a - '0'; |
1650 | if (b <= 9) |
1651 | return (b <= 9); |
1652 | b = (a|0x20) - 'a'; |
1653 | return b <= 'f' - 'a'; |
1654 | } |
1655 | #define toupper(a) bb_ascii_toupper(a) |
1656 | static ALWAYS_INLINE unsigned char bb_ascii_toupper(unsigned char a) |
1657 | { |
1658 | unsigned char b = a - 'a'; |
1659 | if (b <= ('z' - 'a')) |
1660 | a -= 'a' - 'A'; |
1661 | return a; |
1662 | } |
1663 | #define tolower(a) bb_ascii_tolower(a) |
1664 | static ALWAYS_INLINE unsigned char bb_ascii_tolower(unsigned char a) |
1665 | { |
1666 | unsigned char b = a - 'A'; |
1667 | if (b <= ('Z' - 'A')) |
1668 | a += 'a' - 'A'; |
1669 | return a; |
1670 | } |
1671 | |
1672 | /* In ASCII and Unicode, these are likely to be very different. |
1673 | * Let's prevent ambiguous usage from the start */ |
1674 | #define isgraph(a) isgraph_is_ambiguous_dont_use(a) |
1675 | #define isprint(a) isprint_is_ambiguous_dont_use(a) |
1676 | /* NB: must not treat EOF as isgraph or isprint */ |
1677 | #define isgraph_asciionly(a) ((unsigned)((a) - 0x21) <= 0x7e - 0x21) |
1678 | #define isprint_asciionly(a) ((unsigned)((a) - 0x20) <= 0x7e - 0x20) |
1679 | |
1680 | |
1681 | POP_SAVED_FUNCTION_VISIBILITY |
1682 | |
1683 | #endif |