| /* vi: set sw=4 ts=4: */ |
| /* |
| * Busybox main internal header file |
| * |
| * Based in part on code from sash, Copyright (c) 1999 by David I. Bell |
| * Permission has been granted to redistribute this code under GPL. |
| * |
| * Licensed under GPLv2, see file LICENSE in this source tree. |
| */ |
| #ifndef LIBBB_H |
| #define LIBBB_H 1 |
| |
| #include "platform.h" |
| |
| #include <ctype.h> |
| #include <dirent.h> |
| #include <errno.h> |
| #include <fcntl.h> |
| #include <inttypes.h> |
| #include <netdb.h> |
| #include <setjmp.h> |
| #include <signal.h> |
| #include <paths.h> |
| #if defined __UCLIBC__ /* TODO: and glibc? */ |
| /* use inlined versions of these: */ |
| # define sigfillset(s) __sigfillset(s) |
| # define sigemptyset(s) __sigemptyset(s) |
| # define sigisemptyset(s) __sigisemptyset(s) |
| #endif |
| #include <stdint.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <stdarg.h> |
| #include <stddef.h> |
| #include <string.h> |
| /* There are two incompatible basename's, let's not use them! */ |
| /* See the dirname/basename man page for details */ |
| #include <libgen.h> /* dirname,basename */ |
| #undef basename |
| #define basename dont_use_basename |
| #include <poll.h> |
| #include <sys/ioctl.h> |
| #include <sys/mman.h> |
| #include <sys/resource.h> |
| #include <sys/socket.h> |
| #include <sys/stat.h> |
| #include <sys/time.h> |
| #include <sys/types.h> |
| #if !defined(major) || defined(__GLIBC__) |
| # include <sys/sysmacros.h> |
| #endif |
| #include <sys/wait.h> |
| #include <termios.h> |
| #include <time.h> |
| #include <sys/param.h> |
| #include <pwd.h> |
| #include <grp.h> |
| #if ENABLE_FEATURE_SHADOWPASSWDS |
| # if !ENABLE_USE_BB_SHADOW |
| /* If using busybox's shadow implementation, do not include the shadow.h |
| * header as the toolchain may not provide it at all. |
| */ |
| # include <shadow.h> |
| # endif |
| #endif |
| #if defined(ANDROID) || defined(__ANDROID__) |
| # define endpwent() ((void)0) |
| # define endgrent() ((void)0) |
| #endif |
| #ifdef HAVE_MNTENT_H |
| # include <mntent.h> |
| #endif |
| #ifdef HAVE_SYS_STATFS_H |
| # include <sys/statfs.h> |
| #endif |
| /* Don't do this here: |
| * #include <sys/sysinfo.h> |
| * Some linux/ includes pull in conflicting definition |
| * of struct sysinfo (only in some toolchanins), which breaks build. |
| * Include sys/sysinfo.h only in those files which need it. |
| */ |
| #if ENABLE_SELINUX |
| # include <selinux/selinux.h> |
| # include <selinux/context.h> |
| #endif |
| #if ENABLE_FEATURE_UTMP |
| # if defined __UCLIBC__ && ( \ |
| (UCLIBC_VERSION >= KERNEL_VERSION(0, 9, 32) \ |
| && UCLIBC_VERSION < KERNEL_VERSION(0, 9, 34) \ |
| && defined __UCLIBC_HAS_UTMPX__ \ |
| ) || ( \ |
| UCLIBC_VERSION >= KERNEL_VERSION(0, 9, 34) \ |
| ) \ |
| ) |
| # include <utmpx.h> |
| # elif defined __UCLIBC__ |
| # include <utmp.h> |
| # define utmpx utmp |
| # define setutxent setutent |
| # define endutxent endutent |
| # define getutxent getutent |
| # define getutxid getutid |
| # define getutxline getutline |
| # define pututxline pututline |
| # define utmpxname utmpname |
| # define updwtmpx updwtmp |
| # define _PATH_UTMPX _PATH_UTMP |
| # else |
| # include <utmp.h> |
| # include <utmpx.h> |
| # if defined _PATH_UTMP && !defined _PATH_UTMPX |
| # define _PATH_UTMPX _PATH_UTMP |
| # endif |
| # endif |
| #endif |
| #if ENABLE_LOCALE_SUPPORT |
| # include <locale.h> |
| #else |
| # define setlocale(x,y) ((void)0) |
| #endif |
| #ifdef DMALLOC |
| # include <dmalloc.h> |
| #endif |
| /* Just in case libc doesn't define some of these... */ |
| #ifndef _PATH_PASSWD |
| #define _PATH_PASSWD "/etc/passwd" |
| #endif |
| #ifndef _PATH_GROUP |
| #define _PATH_GROUP "/etc/group" |
| #endif |
| #ifndef _PATH_SHADOW |
| #define _PATH_SHADOW "/etc/shadow" |
| #endif |
| #ifndef _PATH_GSHADOW |
| #define _PATH_GSHADOW "/etc/gshadow" |
| #endif |
| #if defined __FreeBSD__ || defined __OpenBSD__ |
| # include <netinet/in.h> |
| # include <arpa/inet.h> |
| #elif defined __APPLE__ |
| # include <netinet/in.h> |
| #else |
| # include <arpa/inet.h> |
| //This breaks on bionic: |
| //# if !defined(__socklen_t_defined) && !defined(_SOCKLEN_T_DECLARED) |
| ///* We #define socklen_t *after* includes, otherwise we get |
| // * typedef redefinition errors from system headers |
| // * (in case "is it defined already" detection above failed) |
| // */ |
| //# define socklen_t bb_socklen_t |
| // typedef unsigned socklen_t; |
| //# endif |
| //if this is still needed, add a fix along the lines of |
| // ifdef SPECIFIC_BROKEN_LIBC_CHECK / typedef socklen_t / endif |
| //in platform.h instead! |
| #endif |
| #ifndef HAVE_CLEARENV |
| # define clearenv() do { if (environ) environ[0] = NULL; } while (0) |
| #endif |
| #ifndef HAVE_FDATASYNC |
| # define fdatasync fsync |
| #endif |
| #ifndef HAVE_XTABS |
| # define XTABS TAB3 |
| #endif |
| /* |
| * Use '%m' to append error string on platforms that support it, |
| * '%s' and strerror() on those that don't. |
| */ |
| #ifdef HAVE_PRINTF_PERCENTM |
| # define STRERROR_FMT "%m" |
| # define STRERROR_ERRNO /*nothing*/ |
| #else |
| # define STRERROR_FMT "%s" |
| # define STRERROR_ERRNO ,strerror(errno) |
| #endif |
| |
| |
| /* Some libc's forget to declare these, do it ourself */ |
| |
| extern char **environ; |
| /* klogctl is in libc's klog.h, but we cheat and not #include that */ |
| int klogctl(int type, char *b, int len); |
| #ifndef PATH_MAX |
| # define PATH_MAX 256 |
| #endif |
| #ifndef BUFSIZ |
| # define BUFSIZ 4096 |
| #endif |
| |
| |
| /* Busybox does not use threads, we can speed up stdio. */ |
| #ifdef HAVE_UNLOCKED_STDIO |
| # undef getc |
| # define getc(stream) getc_unlocked(stream) |
| # undef getchar |
| # define getchar() getchar_unlocked() |
| # undef putc |
| # define putc(c,stream) putc_unlocked(c,stream) |
| # undef putchar |
| # define putchar(c) putchar_unlocked(c) |
| # undef fgetc |
| # define fgetc(stream) getc_unlocked(stream) |
| # undef fputc |
| # define fputc(c,stream) putc_unlocked(c,stream) |
| #endif |
| /* Above functions are required by POSIX.1-2008, below ones are extensions */ |
| #ifdef HAVE_UNLOCKED_LINE_OPS |
| # undef fgets |
| # define fgets(s,n,stream) fgets_unlocked(s,n,stream) |
| # undef fputs |
| # define fputs(s,stream) fputs_unlocked(s,stream) |
| /* musl <= 1.1.15 does not support fflush_unlocked(NULL) */ |
| //# undef fflush |
| //# define fflush(stream) fflush_unlocked(stream) |
| # undef feof |
| # define feof(stream) feof_unlocked(stream) |
| # undef ferror |
| # define ferror(stream) ferror_unlocked(stream) |
| # undef fileno |
| # define fileno(stream) fileno_unlocked(stream) |
| #endif |
| |
| |
| /* Make all declarations hidden (-fvisibility flag only affects definitions) */ |
| /* (don't include system headers after this until corresponding pop!) */ |
| PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN |
| |
| |
| #if ENABLE_USE_BB_PWD_GRP |
| # include "pwd_.h" |
| # include "grp_.h" |
| #endif |
| #if ENABLE_FEATURE_SHADOWPASSWDS |
| # if ENABLE_USE_BB_SHADOW |
| # include "shadow_.h" |
| # endif |
| #endif |
| |
| /* Tested to work correctly with all int types (IIRC :]) */ |
| #define MAXINT(T) (T)( \ |
| ((T)-1) > 0 \ |
| ? (T)-1 \ |
| : (T)~((T)1 << (sizeof(T)*8-1)) \ |
| ) |
| |
| #define MININT(T) (T)( \ |
| ((T)-1) > 0 \ |
| ? (T)0 \ |
| : ((T)1 << (sizeof(T)*8-1)) \ |
| ) |
| |
| /* Large file support */ |
| /* Note that CONFIG_LFS=y forces bbox to be built with all common ops |
| * (stat, lseek etc) mapped to "largefile" variants by libc. |
| * Practically it means that open() automatically has O_LARGEFILE added |
| * and all filesize/file_offset parameters and struct members are "large" |
| * (in today's world - signed 64bit). For full support of large files, |
| * we need a few helper #defines (below) and careful use of off_t |
| * instead of int/ssize_t. No lseek64(), O_LARGEFILE etc necessary */ |
| #if ENABLE_LFS |
| /* CONFIG_LFS is on */ |
| # if ULONG_MAX > 0xffffffff |
| /* "long" is long enough on this system */ |
| typedef unsigned long uoff_t; |
| # define XATOOFF(a) xatoul_range((a), 0, LONG_MAX) |
| /* usage: sz = BB_STRTOOFF(s, NULL, 10); if (errno || sz < 0) die(); */ |
| # define BB_STRTOOFF bb_strtoul |
| # define STRTOOFF strtoul |
| /* usage: printf("size: %"OFF_FMT"d (%"OFF_FMT"x)\n", sz, sz); */ |
| # define OFF_FMT "l" |
| # else |
| /* "long" is too short, need "long long" */ |
| typedef unsigned long long uoff_t; |
| # define XATOOFF(a) xatoull_range((a), 0, LLONG_MAX) |
| # define BB_STRTOOFF bb_strtoull |
| # define STRTOOFF strtoull |
| # define OFF_FMT "ll" |
| # endif |
| #else |
| /* CONFIG_LFS is off */ |
| # if UINT_MAX == 0xffffffff |
| /* While sizeof(off_t) == sizeof(int), off_t is typedef'ed to long anyway. |
| * gcc will throw warnings on printf("%d", off_t). Crap... */ |
| typedef unsigned long uoff_t; |
| # define XATOOFF(a) xatoi_positive(a) |
| # define BB_STRTOOFF bb_strtou |
| # define STRTOOFF strtol |
| # define OFF_FMT "l" |
| # else |
| typedef unsigned long uoff_t; |
| # define XATOOFF(a) xatoul_range((a), 0, LONG_MAX) |
| # define BB_STRTOOFF bb_strtoul |
| # define STRTOOFF strtol |
| # define OFF_FMT "l" |
| # endif |
| #endif |
| /* scary. better ideas? (but do *test* them first!) */ |
| #define OFF_T_MAX ((off_t)~((off_t)1 << (sizeof(off_t)*8-1))) |
| /* Users report bionic to use 32-bit off_t even if LARGEFILE support is requested. |
| * On musl, !ENABLE_LFS on 32-bit arches thinks that off_t is 32-bit. |
| * We misdetected that. Don't let it build: |
| */ |
| struct BUG_off_t_size_is_misdetected { |
| char BUG_off_t_size_is_misdetected[sizeof(off_t) == sizeof(uoff_t) ? 1 : -1]; |
| }; |
| |
| /* Some useful definitions */ |
| #undef FALSE |
| #define FALSE ((int) 0) |
| #undef TRUE |
| #define TRUE ((int) 1) |
| #undef SKIP |
| #define SKIP ((int) 2) |
| |
| /* Macros for min/max. */ |
| #ifndef MIN |
| #define MIN(a,b) (((a)<(b))?(a):(b)) |
| #endif |
| |
| #ifndef MAX |
| #define MAX(a,b) (((a)>(b))?(a):(b)) |
| #endif |
| |
| /* buffer allocation schemes */ |
| #if ENABLE_FEATURE_BUFFERS_GO_ON_STACK |
| #define RESERVE_CONFIG_BUFFER(buffer,len) char buffer[len] |
| #define RESERVE_CONFIG_UBUFFER(buffer,len) unsigned char buffer[len] |
| #define RELEASE_CONFIG_BUFFER(buffer) ((void)0) |
| #else |
| #if ENABLE_FEATURE_BUFFERS_GO_IN_BSS |
| #define RESERVE_CONFIG_BUFFER(buffer,len) static char buffer[len] |
| #define RESERVE_CONFIG_UBUFFER(buffer,len) static unsigned char buffer[len] |
| #define RELEASE_CONFIG_BUFFER(buffer) ((void)0) |
| #else |
| #define RESERVE_CONFIG_BUFFER(buffer,len) char *buffer = xmalloc(len) |
| #define RESERVE_CONFIG_UBUFFER(buffer,len) unsigned char *buffer = xmalloc(len) |
| #define RELEASE_CONFIG_BUFFER(buffer) free(buffer) |
| #endif |
| #endif |
| |
| #if defined(__GLIBC__) |
| /* glibc uses __errno_location() to get a ptr to errno */ |
| /* We can just memorize it once - no multithreading in busybox :) */ |
| extern int *const bb_errno; |
| #undef errno |
| #define errno (*bb_errno) |
| #endif |
| |
| #if !(ULONG_MAX > 0xffffffff) |
| /* Only 32-bit CPUs need this, 64-bit ones use inlined version */ |
| uint64_t bb_bswap_64(uint64_t x) FAST_FUNC; |
| #endif |
| |
| unsigned long FAST_FUNC isqrt(unsigned long long N); |
| |
| unsigned long long monotonic_ns(void) FAST_FUNC; |
| unsigned long long monotonic_us(void) FAST_FUNC; |
| unsigned long long monotonic_ms(void) FAST_FUNC; |
| unsigned monotonic_sec(void) FAST_FUNC; |
| |
| extern void chomp(char *s) FAST_FUNC; |
| extern char *trim(char *s) FAST_FUNC; |
| extern char *skip_whitespace(const char *) FAST_FUNC; |
| extern char *skip_non_whitespace(const char *) FAST_FUNC; |
| extern char *skip_dev_pfx(const char *tty_name) FAST_FUNC; |
| |
| extern char *strrstr(const char *haystack, const char *needle) FAST_FUNC; |
| |
| /* dmalloc will redefine these to it's own implementation. It is safe |
| * to have the prototypes here unconditionally. */ |
| void *malloc_or_warn(size_t size) FAST_FUNC RETURNS_MALLOC; |
| void *xmalloc(size_t size) FAST_FUNC RETURNS_MALLOC; |
| void *xzalloc(size_t size) FAST_FUNC RETURNS_MALLOC; |
| void *xrealloc(void *old, size_t size) FAST_FUNC; |
| /* After v = xrealloc_vector(v, SHIFT, idx) it's ok to use |
| * at least v[idx] and v[idx+1], for all idx values. |
| * SHIFT specifies how many new elements are added (1:2, 2:4, ..., 8:256...) |
| * when all elements are used up. New elements are zeroed out. |
| * xrealloc_vector(v, SHIFT, idx) *MUST* be called with consecutive IDXs - |
| * skipping an index is a bad bug - it may miss a realloc! |
| */ |
| #define xrealloc_vector(vector, shift, idx) \ |
| xrealloc_vector_helper((vector), (sizeof((vector)[0]) << 8) + (shift), (idx)) |
| void* xrealloc_vector_helper(void *vector, unsigned sizeof_and_shift, int idx) FAST_FUNC; |
| char *xstrdup(const char *s) FAST_FUNC RETURNS_MALLOC; |
| char *xstrndup(const char *s, int n) FAST_FUNC RETURNS_MALLOC; |
| void *xmemdup(const void *s, int n) FAST_FUNC RETURNS_MALLOC; |
| |
| |
| //TODO: supply a pointer to char[11] buffer (avoid statics)? |
| extern const char *bb_mode_string(mode_t mode) FAST_FUNC; |
| extern int is_directory(const char *name, int followLinks) FAST_FUNC; |
| enum { /* cp.c, mv.c, install.c depend on these values. CAREFUL when changing them! */ |
| FILEUTILS_PRESERVE_STATUS = 1 << 0, /* -p */ |
| FILEUTILS_DEREFERENCE = 1 << 1, /* !-d */ |
| FILEUTILS_RECUR = 1 << 2, /* -R */ |
| FILEUTILS_FORCE = 1 << 3, /* -f */ |
| FILEUTILS_INTERACTIVE = 1 << 4, /* -i */ |
| FILEUTILS_MAKE_HARDLINK = 1 << 5, /* -l */ |
| FILEUTILS_MAKE_SOFTLINK = 1 << 6, /* -s */ |
| FILEUTILS_DEREF_SOFTLINK = 1 << 7, /* -L */ |
| FILEUTILS_DEREFERENCE_L0 = 1 << 8, /* -H */ |
| /* -a = -pdR (mapped in cp.c) */ |
| /* -r = -dR (mapped in cp.c) */ |
| /* -P = -d (mapped in cp.c) */ |
| FILEUTILS_VERBOSE = (1 << 12) * ENABLE_FEATURE_VERBOSE, /* -v */ |
| FILEUTILS_UPDATE = 1 << 13, /* -u */ |
| FILEUTILS_NO_TARGET_DIR = 1 << 14, /* -T */ |
| #if ENABLE_SELINUX |
| FILEUTILS_PRESERVE_SECURITY_CONTEXT = 1 << 15, /* -c */ |
| #endif |
| FILEUTILS_RMDEST = 1 << (16 - !ENABLE_SELINUX), /* --remove-destination */ |
| /* bit 17 skipped for "cp --parents" */ |
| FILEUTILS_REFLINK = 1 << (18 - !ENABLE_SELINUX), /* cp --reflink=auto */ |
| FILEUTILS_REFLINK_ALWAYS = 1 << (19 - !ENABLE_SELINUX), /* cp --reflink[=always] */ |
| /* |
| * Hole. cp may have some bits set here, |
| * they should not affect remove_file()/copy_file() |
| */ |
| #if ENABLE_SELINUX |
| FILEUTILS_SET_SECURITY_CONTEXT = 1 << 30, |
| #endif |
| FILEUTILS_IGNORE_CHMOD_ERR = 1 << 31, |
| }; |
| #define FILEUTILS_CP_OPTSTR "pdRfilsLHarPvuT" IF_SELINUX("c") |
| extern int remove_file(const char *path, int flags) FAST_FUNC; |
| /* NB: without FILEUTILS_RECUR in flags, it will basically "cat" |
| * the source, not copy (unless "source" is a directory). |
| * This makes "cp /dev/null file" and "install /dev/null file" (!!!) |
| * work coreutils-compatibly. */ |
| extern int copy_file(const char *source, const char *dest, int flags) FAST_FUNC; |
| |
| enum { |
| ACTION_RECURSE = (1 << 0), |
| ACTION_FOLLOWLINKS = (1 << 1), |
| ACTION_FOLLOWLINKS_L0 = (1 << 2), |
| ACTION_DEPTHFIRST = (1 << 3), |
| /*ACTION_REVERSE = (1 << 4), - unused */ |
| ACTION_QUIET = (1 << 5), |
| ACTION_DANGLING_OK = (1 << 6), |
| }; |
| typedef uint8_t recurse_flags_t; |
| extern int recursive_action(const char *fileName, unsigned flags, |
| int FAST_FUNC (*fileAction)(const char *fileName, struct stat* statbuf, void* userData, int depth), |
| int FAST_FUNC (*dirAction)(const char *fileName, struct stat* statbuf, void* userData, int depth), |
| void* userData, unsigned depth) FAST_FUNC; |
| extern int device_open(const char *device, int mode) FAST_FUNC; |
| enum { GETPTY_BUFSIZE = 16 }; /* more than enough for "/dev/ttyXXX" */ |
| extern int xgetpty(char *line) FAST_FUNC; |
| extern int get_console_fd_or_die(void) FAST_FUNC; |
| extern void console_make_active(int fd, const int vt_num) FAST_FUNC; |
| extern char *find_block_device(const char *path) FAST_FUNC; |
| /* bb_copyfd_XX print read/write errors and return -1 if they occur */ |
| extern off_t bb_copyfd_eof(int fd1, int fd2) FAST_FUNC; |
| extern off_t bb_copyfd_size(int fd1, int fd2, off_t size) FAST_FUNC; |
| extern void bb_copyfd_exact_size(int fd1, int fd2, off_t size) FAST_FUNC; |
| /* "short" copy can be detected by return value < size */ |
| /* this helper yells "short read!" if param is not -1 */ |
| extern void complain_copyfd_and_die(off_t sz) NORETURN FAST_FUNC; |
| |
| extern char bb_process_escape_sequence(const char **ptr) FAST_FUNC; |
| char* strcpy_and_process_escape_sequences(char *dst, const char *src) FAST_FUNC; |
| /* xxxx_strip version can modify its parameter: |
| * "/" -> "/" |
| * "abc" -> "abc" |
| * "abc/def" -> "def" |
| * "abc/def/" -> "def" !! |
| */ |
| char *bb_get_last_path_component_strip(char *path) FAST_FUNC; |
| /* "abc/def/" -> "" and it never modifies 'path' */ |
| char *bb_get_last_path_component_nostrip(const char *path) FAST_FUNC; |
| /* Simpler version: does not special case "/" string */ |
| const char *bb_basename(const char *name) FAST_FUNC; |
| /* NB: can violate const-ness (similarly to strchr) */ |
| char *last_char_is(const char *s, int c) FAST_FUNC; |
| const char* endofname(const char *name) FAST_FUNC; |
| char *is_prefixed_with(const char *string, const char *key) FAST_FUNC; |
| char *is_suffixed_with(const char *string, const char *key) FAST_FUNC; |
| |
| int ndelay_on(int fd) FAST_FUNC; |
| int ndelay_off(int fd) FAST_FUNC; |
| void close_on_exec_on(int fd) FAST_FUNC; |
| void xdup2(int, int) FAST_FUNC; |
| void xmove_fd(int, int) FAST_FUNC; |
| |
| |
| DIR *xopendir(const char *path) FAST_FUNC; |
| DIR *warn_opendir(const char *path) FAST_FUNC; |
| |
| char *xmalloc_realpath(const char *path) FAST_FUNC RETURNS_MALLOC; |
| char *xmalloc_realpath_coreutils(const char *path) FAST_FUNC RETURNS_MALLOC; |
| char *xmalloc_readlink(const char *path) FAST_FUNC RETURNS_MALLOC; |
| char *xmalloc_readlink_or_warn(const char *path) FAST_FUNC RETURNS_MALLOC; |
| /* !RETURNS_MALLOC: it's a realloc-like function */ |
| char *xrealloc_getcwd_or_warn(char *cwd) FAST_FUNC; |
| |
| char *xmalloc_follow_symlinks(const char *path) FAST_FUNC RETURNS_MALLOC; |
| |
| |
| enum { |
| /* bb_signals(BB_FATAL_SIGS, handler) catches all signals which |
| * otherwise would kill us, except for those resulting from bugs: |
| * SIGSEGV, SIGILL, SIGFPE. |
| * Other fatal signals not included (TODO?): |
| * SIGBUS Bus error (bad memory access) |
| * SIGPOLL Pollable event. Synonym of SIGIO |
| * SIGPROF Profiling timer expired |
| * SIGSYS Bad argument to routine |
| * SIGTRAP Trace/breakpoint trap |
| * |
| * The only known arch with some of these sigs not fitting |
| * into 32 bits is parisc (SIGXCPU=33, SIGXFSZ=34, SIGSTKFLT=36). |
| * Dance around with long long to guard against that... |
| */ |
| BB_FATAL_SIGS = (int)(0 |
| + (1LL << SIGHUP) |
| + (1LL << SIGINT) |
| + (1LL << SIGTERM) |
| + (1LL << SIGPIPE) // Write to pipe with no readers |
| + (1LL << SIGQUIT) // Quit from keyboard |
| + (1LL << SIGABRT) // Abort signal from abort(3) |
| + (1LL << SIGALRM) // Timer signal from alarm(2) |
| + (1LL << SIGVTALRM) // Virtual alarm clock |
| + (1LL << SIGXCPU) // CPU time limit exceeded |
| + (1LL << SIGXFSZ) // File size limit exceeded |
| + (1LL << SIGUSR1) // Yes kids, these are also fatal! |
| + (1LL << SIGUSR2) |
| + 0), |
| }; |
| void bb_signals(int sigs, void (*f)(int)) FAST_FUNC; |
| /* Unlike signal() and bb_signals, sets handler with sigaction() |
| * and in a way that while signal handler is run, no other signals |
| * will be blocked; syscalls will not be restarted: */ |
| void bb_signals_recursive_norestart(int sigs, void (*f)(int)) FAST_FUNC; |
| /* syscalls like read() will be interrupted with EINTR: */ |
| void signal_no_SA_RESTART_empty_mask(int sig, void (*handler)(int)) FAST_FUNC; |
| /* syscalls like read() won't be interrupted (though select/poll will be): */ |
| void signal_SA_RESTART_empty_mask(int sig, void (*handler)(int)) FAST_FUNC; |
| void wait_for_any_sig(void) FAST_FUNC; |
| void kill_myself_with_sig(int sig) NORETURN FAST_FUNC; |
| void sig_block(int sig) FAST_FUNC; |
| void sig_unblock(int sig) FAST_FUNC; |
| /* Will do sigaction(signum, act, NULL): */ |
| int sigaction_set(int sig, const struct sigaction *act) FAST_FUNC; |
| /* SIG_BLOCK/SIG_UNBLOCK all signals: */ |
| int sigprocmask_allsigs(int how) FAST_FUNC; |
| /* Return old set in the same set: */ |
| int sigprocmask2(int how, sigset_t *set) FAST_FUNC; |
| /* Standard handler which just records signo */ |
| extern smallint bb_got_signal; |
| void record_signo(int signo); /* not FAST_FUNC! */ |
| |
| |
| void xsetgid(gid_t gid) FAST_FUNC; |
| void xsetuid(uid_t uid) FAST_FUNC; |
| void xsetegid(gid_t egid) FAST_FUNC; |
| void xseteuid(uid_t euid) FAST_FUNC; |
| void xchdir(const char *path) FAST_FUNC; |
| void xfchdir(int fd) FAST_FUNC; |
| void xchroot(const char *path) FAST_FUNC; |
| void xsetenv(const char *key, const char *value) FAST_FUNC; |
| void bb_unsetenv(const char *key) FAST_FUNC; |
| void bb_unsetenv_and_free(char *key) FAST_FUNC; |
| void xunlink(const char *pathname) FAST_FUNC; |
| void xstat(const char *pathname, struct stat *buf) FAST_FUNC; |
| void xfstat(int fd, struct stat *buf, const char *errmsg) FAST_FUNC; |
| int open3_or_warn(const char *pathname, int flags, int mode) FAST_FUNC; |
| int open_or_warn(const char *pathname, int flags) FAST_FUNC; |
| int xopen3(const char *pathname, int flags, int mode) FAST_FUNC; |
| int xopen(const char *pathname, int flags) FAST_FUNC; |
| int xopen_nonblocking(const char *pathname) FAST_FUNC; |
| int xopen_as_uid_gid(const char *pathname, int flags, uid_t u, gid_t g) FAST_FUNC; |
| int open_or_warn_stdin(const char *pathname) FAST_FUNC; |
| int xopen_stdin(const char *pathname) FAST_FUNC; |
| void xrename(const char *oldpath, const char *newpath) FAST_FUNC; |
| int rename_or_warn(const char *oldpath, const char *newpath) FAST_FUNC; |
| off_t xlseek(int fd, off_t offset, int whence) FAST_FUNC; |
| int xmkstemp(char *template) FAST_FUNC; |
| off_t fdlength(int fd) FAST_FUNC; |
| |
| uoff_t FAST_FUNC get_volume_size_in_bytes(int fd, |
| const char *override, |
| unsigned override_units, |
| int extend); |
| |
| void xpipe(int filedes[2]) FAST_FUNC; |
| /* In this form code with pipes is much more readable */ |
| struct fd_pair { int rd; int wr; }; |
| #define piped_pair(pair) pipe(&((pair).rd)) |
| #define xpiped_pair(pair) xpipe(&((pair).rd)) |
| |
| /* Useful for having small structure members/global variables */ |
| typedef int8_t socktype_t; |
| typedef int8_t family_t; |
| struct BUG_too_small { |
| char BUG_socktype_t_too_small[(0 |
| | SOCK_STREAM |
| | SOCK_DGRAM |
| | SOCK_RDM |
| | SOCK_SEQPACKET |
| | SOCK_RAW |
| ) <= 127 ? 1 : -1]; |
| char BUG_family_t_too_small[(0 |
| | AF_UNSPEC |
| | AF_INET |
| | AF_INET6 |
| | AF_UNIX |
| #ifdef AF_PACKET |
| | AF_PACKET |
| #endif |
| #ifdef AF_NETLINK |
| | AF_NETLINK |
| #endif |
| /* | AF_DECnet */ |
| /* | AF_IPX */ |
| ) <= 127 ? 1 : -1]; |
| }; |
| |
| |
| void parse_datestr(const char *date_str, struct tm *ptm) FAST_FUNC; |
| time_t validate_tm_time(const char *date_str, struct tm *ptm) FAST_FUNC; |
| char *strftime_HHMMSS(char *buf, unsigned len, time_t *tp) FAST_FUNC; |
| char *strftime_YYYYMMDDHHMMSS(char *buf, unsigned len, time_t *tp) FAST_FUNC; |
| |
| int xsocket(int domain, int type, int protocol) FAST_FUNC; |
| void xbind(int sockfd, struct sockaddr *my_addr, socklen_t addrlen) FAST_FUNC; |
| void xlisten(int s, int backlog) FAST_FUNC; |
| void xconnect(int s, const struct sockaddr *s_addr, socklen_t addrlen) FAST_FUNC; |
| ssize_t xsendto(int s, const void *buf, size_t len, const struct sockaddr *to, |
| socklen_t tolen) FAST_FUNC; |
| |
| int setsockopt_int(int fd, int level, int optname, int optval) FAST_FUNC; |
| int setsockopt_1(int fd, int level, int optname) FAST_FUNC; |
| int setsockopt_SOL_SOCKET_int(int fd, int optname, int optval) FAST_FUNC; |
| int setsockopt_SOL_SOCKET_1(int fd, int optname) FAST_FUNC; |
| /* SO_REUSEADDR allows a server to rebind to an address that is already |
| * "in use" by old connections to e.g. previous server instance which is |
| * killed or crashed. Without it bind will fail until all such connections |
| * time out. Linux does not allow multiple live binds on same ip:port |
| * regardless of SO_REUSEADDR (unlike some other flavors of Unix). |
| * Turn it on before you call bind(). */ |
| void setsockopt_reuseaddr(int fd) FAST_FUNC; /* On Linux this never fails. */ |
| int setsockopt_keepalive(int fd) FAST_FUNC; |
| int setsockopt_broadcast(int fd) FAST_FUNC; |
| int setsockopt_bindtodevice(int fd, const char *iface) FAST_FUNC; |
| int bb_getsockname(int sockfd, void *addr, socklen_t addrlen) FAST_FUNC; |
| /* NB: returns port in host byte order */ |
| unsigned bb_lookup_port(const char *port, const char *protocol, unsigned default_port) FAST_FUNC; |
| #if ENABLE_FEATURE_ETC_SERVICES |
| # define bb_lookup_std_port(portstr, protocol, portnum) bb_lookup_port(portstr, protocol, portnum) |
| #else |
| # define bb_lookup_std_port(portstr, protocol, portnum) (portnum) |
| #endif |
| typedef struct len_and_sockaddr { |
| socklen_t len; |
| union { |
| struct sockaddr sa; |
| struct sockaddr_in sin; |
| #if ENABLE_FEATURE_IPV6 |
| struct sockaddr_in6 sin6; |
| #endif |
| } u; |
| } len_and_sockaddr; |
| enum { |
| LSA_LEN_SIZE = offsetof(len_and_sockaddr, u), |
| LSA_SIZEOF_SA = sizeof( |
| union { |
| struct sockaddr sa; |
| struct sockaddr_in sin; |
| #if ENABLE_FEATURE_IPV6 |
| struct sockaddr_in6 sin6; |
| #endif |
| } |
| ) |
| }; |
| /* Create stream socket, and allocate suitable lsa. |
| * (lsa of correct size and lsa->sa.sa_family (AF_INET/AF_INET6)) |
| * af == AF_UNSPEC will result in trying to create IPv6 socket, |
| * and if kernel doesn't support it, fall back to IPv4. |
| * This is useful if you plan to bind to resulting local lsa. |
| */ |
| int xsocket_type(len_and_sockaddr **lsap, int af, int sock_type) FAST_FUNC; |
| int xsocket_stream(len_and_sockaddr **lsap) FAST_FUNC; |
| /* Create server socket bound to bindaddr:port. bindaddr can be NULL, |
| * numeric IP ("N.N.N.N") or numeric IPv6 address, |
| * and can have ":PORT" suffix (for IPv6 use "[X:X:...:X]:PORT"). |
| * Only if there is no suffix, port argument is used */ |
| /* NB: these set SO_REUSEADDR before bind */ |
| int create_and_bind_stream_or_die(const char *bindaddr, int port) FAST_FUNC; |
| int create_and_bind_dgram_or_die(const char *bindaddr, int port) FAST_FUNC; |
| int create_and_bind_to_netlink(int proto, int grp, unsigned rcvbuf) FAST_FUNC; |
| /* Create client TCP socket connected to peer:port. Peer cannot be NULL. |
| * Peer can be numeric IP ("N.N.N.N"), numeric IPv6 address or hostname, |
| * and can have ":PORT" suffix (for IPv6 use "[X:X:...:X]:PORT"). |
| * If there is no suffix, port argument is used */ |
| int create_and_connect_stream_or_die(const char *peer, int port) FAST_FUNC; |
| /* Connect to peer identified by lsa */ |
| int xconnect_stream(const len_and_sockaddr *lsa) FAST_FUNC; |
| /* Get local address of bound or accepted socket */ |
| len_and_sockaddr *get_sock_lsa(int fd) FAST_FUNC RETURNS_MALLOC; |
| /* Get remote address of connected or accepted socket */ |
| len_and_sockaddr *get_peer_lsa(int fd) FAST_FUNC RETURNS_MALLOC; |
| /* Return malloc'ed len_and_sockaddr with socket address of host:port |
| * Currently will return IPv4 or IPv6 sockaddrs only |
| * (depending on host), but in theory nothing prevents e.g. |
| * UNIX socket address being returned, IPX sockaddr etc... |
| * On error does bb_error_msg and returns NULL */ |
| len_and_sockaddr* host2sockaddr(const char *host, int port) FAST_FUNC RETURNS_MALLOC; |
| /* Version which dies on error */ |
| len_and_sockaddr* xhost2sockaddr(const char *host, int port) FAST_FUNC RETURNS_MALLOC; |
| len_and_sockaddr* xdotted2sockaddr(const char *host, int port) FAST_FUNC RETURNS_MALLOC; |
| /* Same, useful if you want to force family (e.g. IPv6) */ |
| #if !ENABLE_FEATURE_IPV6 |
| #define host_and_af2sockaddr(host, port, af) host2sockaddr((host), (port)) |
| #define xhost_and_af2sockaddr(host, port, af) xhost2sockaddr((host), (port)) |
| #else |
| len_and_sockaddr* host_and_af2sockaddr(const char *host, int port, sa_family_t af) FAST_FUNC RETURNS_MALLOC; |
| len_and_sockaddr* xhost_and_af2sockaddr(const char *host, int port, sa_family_t af) FAST_FUNC RETURNS_MALLOC; |
| #endif |
| /* Assign sin[6]_port member if the socket is an AF_INET[6] one, |
| * otherwise no-op. Useful for ftp. |
| * NB: does NOT do htons() internally, just direct assignment. */ |
| void set_nport(struct sockaddr *sa, unsigned port) FAST_FUNC; |
| /* Retrieve sin[6]_port or return -1 for non-INET[6] lsa's */ |
| int get_nport(const struct sockaddr *sa) FAST_FUNC; |
| /* Reverse DNS. Returns NULL on failure. */ |
| char* xmalloc_sockaddr2host(const struct sockaddr *sa) FAST_FUNC RETURNS_MALLOC; |
| /* This one doesn't append :PORTNUM */ |
| char* xmalloc_sockaddr2host_noport(const struct sockaddr *sa) FAST_FUNC RETURNS_MALLOC; |
| /* This one also doesn't fall back to dotted IP (returns NULL) */ |
| char* xmalloc_sockaddr2hostonly_noport(const struct sockaddr *sa) FAST_FUNC RETURNS_MALLOC; |
| /* inet_[ap]ton on steroids */ |
| char* xmalloc_sockaddr2dotted(const struct sockaddr *sa) FAST_FUNC RETURNS_MALLOC; |
| char* xmalloc_sockaddr2dotted_noport(const struct sockaddr *sa) FAST_FUNC RETURNS_MALLOC; |
| // "old" (ipv4 only) API |
| // users: traceroute.c hostname.c - use _list_ of all IPs |
| struct hostent *xgethostbyname(const char *name) FAST_FUNC; |
| // Also mount.c and inetd.c are using gethostbyname(), |
| // + inet_common.c has additional IPv4-only stuff |
| |
| |
| struct tls_aes { |
| uint32_t key[60]; |
| unsigned rounds; |
| }; |
| #define TLS_MAX_MAC_SIZE 32 |
| #define TLS_MAX_KEY_SIZE 32 |
| #define TLS_MAX_IV_SIZE 4 |
| struct tls_handshake_data; /* opaque */ |
| typedef struct tls_state { |
| unsigned flags; |
| |
| int ofd; |
| int ifd; |
| |
| unsigned min_encrypted_len_on_read; |
| uint16_t cipher_id; |
| unsigned MAC_size; |
| unsigned key_size; |
| unsigned IV_size; |
| |
| uint8_t *outbuf; |
| int outbuf_size; |
| |
| int inbuf_size; |
| int ofs_to_buffered; |
| int buffered_size; |
| uint8_t *inbuf; |
| |
| struct tls_handshake_data *hsd; |
| |
| // RFC 5246 |
| // sequence number |
| // Each connection state contains a sequence number, which is |
| // maintained separately for read and write states. The sequence |
| // number MUST be set to zero whenever a connection state is made the |
| // active state. Sequence numbers are of type uint64 and may not |
| // exceed 2^64-1. |
| /*uint64_t read_seq64_be;*/ |
| uint64_t write_seq64_be; |
| |
| /*uint8_t *server_write_MAC_key;*/ |
| uint8_t *client_write_key; |
| uint8_t *server_write_key; |
| uint8_t *client_write_IV; |
| uint8_t *server_write_IV; |
| uint8_t client_write_MAC_key[TLS_MAX_MAC_SIZE]; |
| uint8_t server_write_MAC_k__[TLS_MAX_MAC_SIZE]; |
| uint8_t client_write_k__[TLS_MAX_KEY_SIZE]; |
| uint8_t server_write_k__[TLS_MAX_KEY_SIZE]; |
| uint8_t client_write_I_[TLS_MAX_IV_SIZE]; |
| uint8_t server_write_I_[TLS_MAX_IV_SIZE]; |
| |
| struct tls_aes aes_encrypt; |
| struct tls_aes aes_decrypt; |
| uint8_t H[16]; //used by AES_GCM |
| } tls_state_t; |
| |
| static inline tls_state_t *new_tls_state(void) |
| { |
| tls_state_t *tls = xzalloc(sizeof(*tls)); |
| return tls; |
| } |
| void tls_handshake(tls_state_t *tls, const char *sni) FAST_FUNC; |
| #define TLSLOOP_EXIT_ON_LOCAL_EOF (1 << 0) |
| void tls_run_copy_loop(tls_state_t *tls, unsigned flags) FAST_FUNC; |
| |
| |
| void socket_want_pktinfo(int fd) FAST_FUNC; |
| ssize_t send_to_from(int fd, void *buf, size_t len, int flags, |
| const struct sockaddr *to, |
| const struct sockaddr *from, |
| socklen_t tolen) FAST_FUNC; |
| ssize_t recv_from_to(int fd, void *buf, size_t len, int flags, |
| struct sockaddr *from, |
| struct sockaddr *to, |
| socklen_t sa_size) FAST_FUNC; |
| |
| uint16_t inet_cksum(uint16_t *addr, int len) FAST_FUNC; |
| int parse_pasv_epsv(char *buf) FAST_FUNC; |
| |
| /* 0 if argv[0] is NULL: */ |
| unsigned string_array_len(char **argv) FAST_FUNC; |
| void overlapping_strcpy(char *dst, const char *src) FAST_FUNC; |
| char *safe_strncpy(char *dst, const char *src, size_t size) FAST_FUNC; |
| char *strncpy_IFNAMSIZ(char *dst, const char *src) FAST_FUNC; |
| unsigned count_strstr(const char *str, const char *sub) FAST_FUNC; |
| char *xmalloc_substitute_string(const char *src, int count, const char *sub, const char *repl) FAST_FUNC; |
| /* Guaranteed to NOT be a macro (smallest code). Saves nearly 2k on uclibc. |
| * But potentially slow, don't use in one-billion-times loops */ |
| int bb_putchar(int ch) FAST_FUNC; |
| /* Note: does not use stdio, writes to fd 2 directly */ |
| int bb_putchar_stderr(char ch) FAST_FUNC; |
| char *xasprintf(const char *format, ...) __attribute__ ((format(printf, 1, 2))) FAST_FUNC RETURNS_MALLOC; |
| char *auto_string(char *str) FAST_FUNC; |
| // gcc-4.1.1 still isn't good enough at optimizing it |
| // (+200 bytes compared to macro) |
| //static ALWAYS_INLINE |
| //int LONE_DASH(const char *s) { return s[0] == '-' && !s[1]; } |
| //static ALWAYS_INLINE |
| //int NOT_LONE_DASH(const char *s) { return s[0] != '-' || s[1]; } |
| #define LONE_DASH(s) ((s)[0] == '-' && !(s)[1]) |
| #define NOT_LONE_DASH(s) ((s)[0] != '-' || (s)[1]) |
| #define LONE_CHAR(s,c) ((s)[0] == (c) && !(s)[1]) |
| #define NOT_LONE_CHAR(s,c) ((s)[0] != (c) || (s)[1]) |
| #define DOT_OR_DOTDOT(s) ((s)[0] == '.' && (!(s)[1] || ((s)[1] == '.' && !(s)[2]))) |
| |
| typedef struct uni_stat_t { |
| unsigned byte_count; |
| unsigned unicode_count; |
| unsigned unicode_width; |
| } uni_stat_t; |
| /* Returns a string with unprintable chars replaced by '?' or |
| * SUBST_WCHAR. This function is unicode-aware. */ |
| const char* FAST_FUNC printable_string(const char *str); |
| const char* FAST_FUNC printable_string2(uni_stat_t *stats, const char *str); |
| /* Prints unprintable char ch as ^C or M-c to file |
| * (M-c is used only if ch is ORed with PRINTABLE_META), |
| * else it is printed as-is (except for ch = 0x9b) */ |
| enum { PRINTABLE_META = 0x100 }; |
| void fputc_printable(int ch, FILE *file) FAST_FUNC; |
| /* Return a string that is the printable representation of character ch. |
| * Buffer must hold at least four characters. */ |
| enum { |
| VISIBLE_ENDLINE = 1 << 0, |
| VISIBLE_SHOW_TABS = 1 << 1, |
| }; |
| void visible(unsigned ch, char *buf, int flags) FAST_FUNC; |
| |
| extern ssize_t safe_read(int fd, void *buf, size_t count) FAST_FUNC; |
| extern ssize_t nonblock_immune_read(int fd, void *buf, size_t count) FAST_FUNC; |
| // NB: will return short read on error, not -1, |
| // if some data was read before error occurred |
| extern ssize_t full_read(int fd, void *buf, size_t count) FAST_FUNC; |
| extern void xread(int fd, void *buf, size_t count) FAST_FUNC; |
| extern unsigned char xread_char(int fd) FAST_FUNC; |
| extern ssize_t read_close(int fd, void *buf, size_t maxsz) FAST_FUNC; |
| extern ssize_t open_read_close(const char *filename, void *buf, size_t maxsz) FAST_FUNC; |
| // Reads one line a-la fgets (but doesn't save terminating '\n'). |
| // Reads byte-by-byte. Useful when it is important to not read ahead. |
| // Bytes are appended to pfx (which must be malloced, or NULL). |
| extern char *xmalloc_reads(int fd, size_t *maxsz_p) FAST_FUNC; |
| /* Reads block up to *maxsz_p (default: INT_MAX - 4095) */ |
| extern void *xmalloc_read(int fd, size_t *maxsz_p) FAST_FUNC RETURNS_MALLOC; |
| extern void *xmalloc_read_with_initial_buf(int fd, size_t *maxsz_p, char *buf, size_t total) FAST_FUNC; |
| /* Returns NULL if file can't be opened (default max size: INT_MAX - 4095) */ |
| extern void *xmalloc_open_read_close(const char *filename, size_t *maxsz_p) FAST_FUNC RETURNS_MALLOC; |
| /* Never returns NULL */ |
| extern void *xmalloc_xopen_read_close(const char *filename, size_t *maxsz_p) FAST_FUNC RETURNS_MALLOC; |
| |
| #if defined(ARG_MAX) && (ARG_MAX >= 60*1024 || !defined(_SC_ARG_MAX)) |
| /* Use _constant_ maximum if: defined && (big enough || no variable one exists) */ |
| # define bb_arg_max() ((unsigned)ARG_MAX) |
| #elif defined(_SC_ARG_MAX) |
| /* Else use variable one (a bit more expensive) */ |
| unsigned bb_arg_max(void) FAST_FUNC; |
| #else |
| /* If all else fails */ |
| # define bb_arg_max() ((unsigned)(32 * 1024)) |
| #endif |
| unsigned bb_clk_tck(void) FAST_FUNC; |
| |
| #define SEAMLESS_COMPRESSION (0 \ |
| || ENABLE_FEATURE_SEAMLESS_XZ \ |
| || ENABLE_FEATURE_SEAMLESS_LZMA \ |
| || ENABLE_FEATURE_SEAMLESS_BZ2 \ |
| || ENABLE_FEATURE_SEAMLESS_GZ \ |
| || ENABLE_FEATURE_SEAMLESS_Z) |
| |
| #if SEAMLESS_COMPRESSION |
| /* Autodetects gzip/bzip2 formats. fd may be in the middle of the file! */ |
| int setup_unzip_on_fd(int fd, int fail_if_not_compressed) FAST_FUNC; |
| /* Autodetects .gz etc */ |
| extern int open_zipped(const char *fname, int fail_if_not_compressed) FAST_FUNC; |
| extern void *xmalloc_open_zipped_read_close(const char *fname, size_t *maxsz_p) FAST_FUNC RETURNS_MALLOC; |
| #else |
| # define setup_unzip_on_fd(...) (0) |
| # define open_zipped(fname, fail_if_not_compressed) open((fname), O_RDONLY); |
| # define xmalloc_open_zipped_read_close(fname, maxsz_p) xmalloc_open_read_close((fname), (maxsz_p)) |
| #endif |
| /* lzma has no signature, need a little helper. NB: exist only for ENABLE_FEATURE_SEAMLESS_LZMA=y */ |
| void setup_lzma_on_fd(int fd) FAST_FUNC; |
| |
| extern ssize_t safe_write(int fd, const void *buf, size_t count) FAST_FUNC; |
| // NB: will return short write on error, not -1, |
| // if some data was written before error occurred |
| extern ssize_t full_write(int fd, const void *buf, size_t count) FAST_FUNC; |
| extern void xwrite(int fd, const void *buf, size_t count) FAST_FUNC; |
| extern void xwrite_str(int fd, const char *str) FAST_FUNC; |
| extern ssize_t full_write1_str(const char *str) FAST_FUNC; |
| extern ssize_t full_write2_str(const char *str) FAST_FUNC; |
| extern void xopen_xwrite_close(const char* file, const char *str) FAST_FUNC; |
| |
| /* Close fd, but check for failures (some types of write errors) */ |
| extern void xclose(int fd) FAST_FUNC; |
| |
| /* Reads and prints to stdout till eof, then closes FILE. Exits on error: */ |
| extern void xprint_and_close_file(FILE *file) FAST_FUNC; |
| |
| /* Reads a line from a text file, up to a newline or NUL byte, inclusive. |
| * Returns malloc'ed char*. If end is NULL '\n' isn't considered |
| * end of line. If end isn't NULL, length of the chunk is stored in it. |
| * Returns NULL if EOF/error. |
| */ |
| extern char *bb_get_chunk_from_file(FILE *file, size_t *end) FAST_FUNC; |
| /* Reads up to (and including) TERMINATING_STRING: */ |
| extern char *xmalloc_fgets_str(FILE *file, const char *terminating_string) FAST_FUNC RETURNS_MALLOC; |
| /* Same, with limited max size, and returns the length (excluding NUL): */ |
| extern char *xmalloc_fgets_str_len(FILE *file, const char *terminating_string, size_t *maxsz_p) FAST_FUNC RETURNS_MALLOC; |
| /* Chops off TERMINATING_STRING from the end: */ |
| extern char *xmalloc_fgetline_str(FILE *file, const char *terminating_string) FAST_FUNC RETURNS_MALLOC; |
| /* Reads up to (and including) "\n" or NUL byte: */ |
| extern char *xmalloc_fgets(FILE *file) FAST_FUNC RETURNS_MALLOC; |
| /* Chops off '\n' from the end, unlike fgets: */ |
| extern char *xmalloc_fgetline(FILE *file) FAST_FUNC RETURNS_MALLOC; |
| /* Same, but doesn't try to conserve space (may have some slack after the end) */ |
| /* extern char *xmalloc_fgetline_fast(FILE *file) FAST_FUNC RETURNS_MALLOC; */ |
| |
| void die_if_ferror(FILE *file, const char *msg) FAST_FUNC; |
| void die_if_ferror_stdout(void) FAST_FUNC; |
| int fflush_all(void) FAST_FUNC; |
| void fflush_stdout_and_exit(int retval) NORETURN FAST_FUNC; |
| int fclose_if_not_stdin(FILE *file) FAST_FUNC; |
| FILE* xfopen(const char *filename, const char *mode) FAST_FUNC; |
| /* Prints warning to stderr and returns NULL on failure: */ |
| FILE* fopen_or_warn(const char *filename, const char *mode) FAST_FUNC; |
| /* "Opens" stdin if filename is special, else just opens file: */ |
| FILE* xfopen_stdin(const char *filename) FAST_FUNC; |
| FILE* fopen_or_warn_stdin(const char *filename) FAST_FUNC; |
| FILE* fopen_for_read(const char *path) FAST_FUNC; |
| FILE* xfopen_for_read(const char *path) FAST_FUNC; |
| FILE* fopen_for_write(const char *path) FAST_FUNC; |
| FILE* xfopen_for_write(const char *path) FAST_FUNC; |
| FILE* xfdopen_for_read(int fd) FAST_FUNC; |
| FILE* xfdopen_for_write(int fd) FAST_FUNC; |
| |
| int bb_pstrcmp(const void *a, const void *b) /* not FAST_FUNC! */; |
| void qsort_string_vector(char **sv, unsigned count) FAST_FUNC; |
| |
| /* Wrapper which restarts poll on EINTR or ENOMEM. |
| * On other errors complains [perror("poll")] and returns. |
| * Warning! May take (much) longer than timeout_ms to return! |
| * If this is a problem, use bare poll and open-code EINTR/ENOMEM handling */ |
| int safe_poll(struct pollfd *ufds, nfds_t nfds, int timeout_ms) FAST_FUNC; |
| |
| char *safe_gethostname(void) FAST_FUNC; |
| |
| /* Convert each alpha char in str to lower-case */ |
| char* str_tolower(char *str) FAST_FUNC; |
| |
| char *utoa(unsigned n) FAST_FUNC; |
| char *itoa(int n) FAST_FUNC; |
| /* Returns a pointer past the formatted number, does NOT null-terminate */ |
| char *utoa_to_buf(unsigned n, char *buf, unsigned buflen) FAST_FUNC; |
| char *itoa_to_buf(int n, char *buf, unsigned buflen) FAST_FUNC; |
| /* Intelligent formatters of bignums */ |
| char *smart_ulltoa4(unsigned long long ul, char buf[4], const char *scale) FAST_FUNC; |
| char *smart_ulltoa5(unsigned long long ul, char buf[5], const char *scale) FAST_FUNC; |
| /* If block_size == 0, display size without fractional part, |
| * else display (size * block_size) with one decimal digit. |
| * If display_unit == 0, show value no bigger than 1024 with suffix (K,M,G...), |
| * else divide by display_unit and do not use suffix. */ |
| #define HUMAN_READABLE_MAX_WIDTH 7 /* "1024.0G" */ |
| #define HUMAN_READABLE_MAX_WIDTH_STR "7" |
| //TODO: provide pointer to buf (avoid statics)? |
| const char *make_human_readable_str(unsigned long long size, |
| unsigned long block_size, unsigned long display_unit) FAST_FUNC; |
| /* Put a string of hex bytes ("1b2e66fe"...), return advanced pointer */ |
| char *bin2hex(char *dst, const char *src, int count) FAST_FUNC; |
| /* Reverse */ |
| char* hex2bin(char *dst, const char *src, int count) FAST_FUNC; |
| |
| /* Generate a UUID */ |
| void generate_uuid(uint8_t *buf) FAST_FUNC; |
| |
| /* Last element is marked by mult == 0 */ |
| struct suffix_mult { |
| char suffix[4]; |
| unsigned mult; |
| }; |
| extern const struct suffix_mult bkm_suffixes[]; |
| #define km_suffixes (bkm_suffixes + 1) |
| extern const struct suffix_mult cwbkMG_suffixes[]; |
| #define kMG_suffixes (cwbkMG_suffixes + 3) |
| extern const struct suffix_mult kmg_i_suffixes[]; |
| |
| #include "xatonum.h" |
| /* Specialized: */ |
| |
| /* Using xatoi() instead of naive atoi() is not always convenient - |
| * in many places people want *non-negative* values, but store them |
| * in signed int. Therefore we need this one: |
| * dies if input is not in [0, INT_MAX] range. Also will reject '-0' etc. |
| * It should really be named xatoi_nonnegative (since it allows 0), |
| * but that would be too long. |
| */ |
| int xatoi_positive(const char *numstr) FAST_FUNC; |
| |
| /* Useful for reading port numbers */ |
| uint16_t xatou16(const char *numstr) FAST_FUNC; |
| |
| #if ENABLE_FLOAT_DURATION |
| typedef double duration_t; |
| void sleep_for_duration(duration_t duration) FAST_FUNC; |
| #define DURATION_FMT "f" |
| #else |
| typedef unsigned duration_t; |
| #define sleep_for_duration(duration) sleep(duration) |
| #define DURATION_FMT "u" |
| #endif |
| duration_t parse_duration_str(char *str) FAST_FUNC; |
| |
| /* These parse entries in /etc/passwd and /etc/group. This is desirable |
| * for BusyBox since we want to avoid using the glibc NSS stuff, which |
| * increases target size and is often not needed on embedded systems. */ |
| long xuname2uid(const char *name) FAST_FUNC; |
| long xgroup2gid(const char *name) FAST_FUNC; |
| /* wrapper: allows string to contain numeric uid or gid */ |
| unsigned long get_ug_id(const char *s, long FAST_FUNC (*xname2id)(const char *)) FAST_FUNC; |
| struct bb_uidgid_t { |
| uid_t uid; |
| gid_t gid; |
| }; |
| /* always sets uid and gid; returns 0 on failure */ |
| int get_uidgid(struct bb_uidgid_t*, const char*) FAST_FUNC; |
| /* always sets uid and gid; exits on failure */ |
| void xget_uidgid(struct bb_uidgid_t*, const char*) FAST_FUNC; |
| /* chown-like handling of "user[:[group]" */ |
| void parse_chown_usergroup_or_die(struct bb_uidgid_t *u, char *user_group) FAST_FUNC; |
| struct passwd* xgetpwnam(const char *name) FAST_FUNC; |
| struct group* xgetgrnam(const char *name) FAST_FUNC; |
| struct passwd* xgetpwuid(uid_t uid) FAST_FUNC; |
| struct group* xgetgrgid(gid_t gid) FAST_FUNC; |
| char* xuid2uname(uid_t uid) FAST_FUNC; |
| char* xgid2group(gid_t gid) FAST_FUNC; |
| char* uid2uname(uid_t uid) FAST_FUNC; |
| char* gid2group(gid_t gid) FAST_FUNC; |
| char* uid2uname_utoa(uid_t uid) FAST_FUNC; |
| char* gid2group_utoa(gid_t gid) FAST_FUNC; |
| /* versions which cache results (useful for ps, ls etc) */ |
| const char* get_cached_username(uid_t uid) FAST_FUNC; |
| const char* get_cached_groupname(gid_t gid) FAST_FUNC; |
| void clear_username_cache(void) FAST_FUNC; |
| /* internally usernames are saved in fixed-sized char[] buffers */ |
| enum { USERNAME_MAX_SIZE = 32 - sizeof(uid_t) }; |
| #if ENABLE_FEATURE_CHECK_NAMES |
| void die_if_bad_username(const char* name) FAST_FUNC; |
| #else |
| #define die_if_bad_username(name) ((void)(name)) |
| #endif |
| /* |
| * Returns (-1) terminated malloced result of getgroups(). |
| * Reallocs group_array (useful for repeated calls). |
| * ngroups is an initial size of array. It is rounded up to 32 for realloc. |
| * ngroups is updated on return. |
| * ngroups can be NULL: bb_getgroups(NULL, NULL) is valid usage. |
| * Dies on errors (on Linux, only xrealloc can cause this, not internal getgroups call). |
| */ |
| gid_t *bb_getgroups(int *ngroups, gid_t *group_array) FAST_FUNC; |
| |
| #if ENABLE_FEATURE_UTMP |
| void FAST_FUNC write_new_utmp(pid_t pid, int new_type, const char *tty_name, const char *username, const char *hostname); |
| void FAST_FUNC update_utmp(pid_t pid, int new_type, const char *tty_name, const char *username, const char *hostname); |
| void FAST_FUNC update_utmp_DEAD_PROCESS(pid_t pid); |
| #else |
| # define write_new_utmp(pid, new_type, tty_name, username, hostname) ((void)0) |
| # define update_utmp(pid, new_type, tty_name, username, hostname) ((void)0) |
| # define update_utmp_DEAD_PROCESS(pid) ((void)0) |
| #endif |
| |
| |
| int file_is_executable(const char *name) FAST_FUNC; |
| char *find_executable(const char *filename, char **PATHp) FAST_FUNC; |
| int executable_exists(const char *filename) FAST_FUNC; |
| |
| /* BB_EXECxx always execs (it's not doing NOFORK/NOEXEC stuff), |
| * but it may exec busybox and call applet instead of searching PATH. |
| */ |
| #if ENABLE_FEATURE_PREFER_APPLETS |
| int BB_EXECVP(const char *file, char *const argv[]) FAST_FUNC; |
| #define BB_EXECLP(prog,cmd,...) \ |
| do { \ |
| if (find_applet_by_name(prog) >= 0) \ |
| execlp(bb_busybox_exec_path, cmd, __VA_ARGS__); \ |
| execlp(prog, cmd, __VA_ARGS__); \ |
| } while (0) |
| #else |
| #define BB_EXECVP(prog,cmd) execvp(prog,cmd) |
| #define BB_EXECLP(prog,cmd,...) execlp(prog,cmd,__VA_ARGS__) |
| #endif |
| void BB_EXECVP_or_die(char **argv) NORETURN FAST_FUNC; |
| void exec_prog_or_SHELL(char **argv) NORETURN FAST_FUNC; |
| |
| /* xvfork() can't be a _function_, return after vfork in child mangles stack |
| * in the parent. It must be a macro. */ |
| #define xvfork() \ |
| ({ \ |
| pid_t bb__xvfork_pid = vfork(); \ |
| if (bb__xvfork_pid < 0) \ |
| bb_simple_perror_msg_and_die("vfork"); \ |
| bb__xvfork_pid; \ |
| }) |
| #if BB_MMU |
| pid_t xfork(void) FAST_FUNC; |
| #endif |
| void xvfork_parent_waits_and_exits(void) FAST_FUNC; |
| |
| /* NOMMU friendy fork+exec: */ |
| pid_t spawn(char **argv) FAST_FUNC; |
| pid_t xspawn(char **argv) FAST_FUNC; |
| |
| pid_t safe_waitpid(pid_t pid, int *wstat, int options) FAST_FUNC; |
| pid_t wait_any_nohang(int *wstat) FAST_FUNC; |
| /* wait4pid: unlike waitpid, waits ONLY for one process. |
| * Returns sig + 0x180 if child is killed by signal. |
| * It's safe to pass negative 'pids' from failed [v]fork - |
| * wait4pid will return -1 (and will not clobber [v]fork's errno). |
| * IOW: rc = wait4pid(spawn(argv)); |
| * if (rc < 0) bb_perror_msg("%s", argv[0]); |
| * if (rc > 0) bb_error_msg("exit code: %d", rc & 0xff); |
| */ |
| int wait4pid(pid_t pid) FAST_FUNC; |
| int wait_for_exitstatus(pid_t pid) FAST_FUNC; |
| /************************************************************************/ |
| /* spawn_and_wait/run_nofork_applet/run_applet_no_and_exit need to work */ |
| /* carefully together to reinit some global state while not disturbing */ |
| /* other. Be careful if you change them. Consult docs/nofork_noexec.txt */ |
| /************************************************************************/ |
| /* Same as wait4pid(spawn(argv)), but with NOFORK/NOEXEC if configured: */ |
| int spawn_and_wait(char **argv) FAST_FUNC; |
| /* Does NOT check that applet is NOFORK, just blindly runs it */ |
| int run_nofork_applet(int applet_no, char **argv) FAST_FUNC; |
| void run_noexec_applet_and_exit(int a, const char *name, char **argv) NORETURN FAST_FUNC; |
| #ifndef BUILD_INDIVIDUAL |
| int find_applet_by_name(const char *name) FAST_FUNC; |
| void run_applet_no_and_exit(int a, const char *name, char **argv) NORETURN FAST_FUNC; |
| #endif |
| #if defined(__linux__) |
| void set_task_comm(const char *comm) FAST_FUNC; |
| #else |
| # define set_task_comm(name) ((void)0) |
| #endif |
| |
| /* Helpers for daemonization. |
| * |
| * bb_daemonize(flags) = daemonize, does not compile on NOMMU |
| * |
| * bb_daemonize_or_rexec(flags, argv) = daemonizes on MMU (and ignores argv), |
| * rexec's itself on NOMMU with argv passed as command line. |
| * Thus bb_daemonize_or_rexec may cause your <applet>_main() to be re-executed |
| * from the start. (It will detect it and not reexec again second time). |
| * You have to audit carefully that you don't do something twice as a result |
| * (opening files/sockets, parsing config files etc...)! |
| * |
| * Both of the above will redirect fd 0,1,2 to /dev/null and drop ctty |
| * (will do setsid()). |
| * |
| * fork_or_rexec(argv) = bare-bones fork on MMU, |
| * "vfork + re-exec ourself" on NOMMU. No fd redirection, no setsid(). |
| * On MMU ignores argv. |
| * |
| * Helper for network daemons in foreground mode: |
| * |
| * bb_sanitize_stdio() = make sure that fd 0,1,2 are opened by opening them |
| * to /dev/null if they are not. |
| */ |
| enum { |
| DAEMON_CHDIR_ROOT = 1 << 0, |
| DAEMON_DEVNULL_STDIO = 1 << 1, |
| DAEMON_CLOSE_EXTRA_FDS = 1 << 2, |
| DAEMON_ONLY_SANITIZE = 1 << 3, /* internal use */ |
| //DAEMON_DOUBLE_FORK = 1 << 4, /* double fork to avoid controlling tty */ |
| }; |
| #if BB_MMU |
| enum { re_execed = 0 }; |
| # define fork_or_rexec(argv) xfork() |
| # define bb_daemonize_or_rexec(flags, argv) bb_daemonize_or_rexec(flags) |
| # define bb_daemonize(flags) bb_daemonize_or_rexec(flags, bogus) |
| #else |
| extern bool re_execed; |
| /* Note: re_exec() and fork_or_rexec() do argv[0][0] |= 0x80 on NOMMU! |
| * _Parent_ needs to undo it if it doesn't want to have argv[0] mangled. |
| */ |
| void re_exec(char **argv) NORETURN FAST_FUNC; |
| pid_t fork_or_rexec(char **argv) FAST_FUNC; |
| int BUG_fork_is_unavailable_on_nommu(void) FAST_FUNC; |
| int BUG_daemon_is_unavailable_on_nommu(void) FAST_FUNC; |
| void BUG_bb_daemonize_is_unavailable_on_nommu(void) FAST_FUNC; |
| # define fork() BUG_fork_is_unavailable_on_nommu() |
| # define xfork() BUG_fork_is_unavailable_on_nommu() |
| # define daemon(a,b) BUG_daemon_is_unavailable_on_nommu() |
| # define bb_daemonize(a) BUG_bb_daemonize_is_unavailable_on_nommu() |
| #endif |
| void bb_daemonize_or_rexec(int flags, char **argv) FAST_FUNC; |
| void bb_sanitize_stdio(void) FAST_FUNC; |
| #define bb_daemon_helper(arg) bb_daemonize_or_rexec((arg) | DAEMON_ONLY_SANITIZE, NULL) |
| /* Clear dangerous stuff, set PATH. Return 1 if was run by different user. */ |
| int sanitize_env_if_suid(void) FAST_FUNC; |
| |
| |
| /* For top, ps. Some argv[i] are replaced by malloced "-opt" strings */ |
| void make_all_argv_opts(char **argv) FAST_FUNC; |
| char* single_argv(char **argv) FAST_FUNC; |
| extern const char *const bb_argv_dash[]; /* { "-", NULL } */ |
| extern uint32_t option_mask32; |
| uint32_t getopt32(char **argv, const char *applet_opts, ...) FAST_FUNC; |
| # define No_argument "\0" |
| # define Required_argument "\001" |
| # define Optional_argument "\002" |
| #if ENABLE_LONG_OPTS |
| uint32_t getopt32long(char **argv, const char *optstring, const char *longopts, ...) FAST_FUNC; |
| #else |
| #define getopt32long(argv,optstring,longopts,...) \ |
| getopt32(argv,optstring,##__VA_ARGS__) |
| #endif |
| /* BSD-derived getopt() functions require that optind be set to 1 in |
| * order to reset getopt() state. This used to be generally accepted |
| * way of resetting getopt(). However, glibc's getopt() |
| * has additional getopt() state beyond optind (specifically, glibc |
| * extensions such as '+' and '-' at the start of the string), and requires |
| * that optind be set to zero to reset its state. BSD-derived versions |
| * of getopt() misbehaved if optind is set to 0 in order to reset getopt(), |
| * and glibc's getopt() used to coredump if optind is set 1 in order |
| * to reset getopt(). |
| * Then BSD introduced additional variable "optreset" which should be |
| * set to 1 in order to reset getopt(). Sigh. Standards, anyone? |
| * |
| * By ~2008, OpenBSD 3.4 was changed to survive glibc-like optind = 0 |
| * (to interpret it as if optreset was set). |
| */ |
| #if 1 /*def __GLIBC__*/ |
| #define GETOPT_RESET() (optind = 0) |
| #else /* BSD style */ |
| #define GETOPT_RESET() (optind = 1) |
| #endif |
| |
| |
| /* Having next pointer as a first member allows easy creation |
| * of "llist-compatible" structs, and using llist_FOO functions |
| * on them. |
| */ |
| typedef struct llist_t { |
| struct llist_t *link; |
| char *data; |
| } llist_t; |
| void llist_add_to(llist_t **old_head, void *data) FAST_FUNC; |
| void llist_add_to_end(llist_t **list_head, void *data) FAST_FUNC; |
| void *llist_pop(llist_t **elm) FAST_FUNC; |
| void llist_unlink(llist_t **head, llist_t *elm) FAST_FUNC; |
| void llist_free(llist_t *elm, void (*freeit)(void *data)) FAST_FUNC; |
| llist_t *llist_rev(llist_t *list) FAST_FUNC; |
| llist_t *llist_find_str(llist_t *first, const char *str) FAST_FUNC; |
| /* BTW, surprisingly, changing API to |
| * llist_t *llist_add_to(llist_t *old_head, void *data) |
| * etc does not result in smaller code... */ |
| |
| /* start_stop_daemon and udhcpc are special - they want |
| * to create pidfiles regardless of FEATURE_PIDFILE */ |
| #if ENABLE_FEATURE_PIDFILE || defined(WANT_PIDFILE) |
| /* True only if we created pidfile which is *file*, not /dev/null etc */ |
| extern smallint wrote_pidfile; |
| void write_pidfile(const char *path) FAST_FUNC; |
| void write_pidfile_std_path_and_ext(const char *path) FAST_FUNC; |
| void remove_pidfile_std_path_and_ext(const char *path) FAST_FUNC; |
| #define remove_pidfile(path) do { if (wrote_pidfile) unlink(path); } while (0) |
| #else |
| enum { wrote_pidfile = 0 }; |
| #define write_pidfile_std_path_and_ext(path) ((void)0) |
| #define remove_pidfile_std_path_and_ext(path) ((void)0) |
| #define write_pidfile(path) ((void)0) |
| #define remove_pidfile(path) ((void)0) |
| #endif |
| |
| enum { |
| LOGMODE_NONE = 0, |
| LOGMODE_STDIO = (1 << 0), |
| LOGMODE_SYSLOG = (1 << 1) * ENABLE_FEATURE_SYSLOG, |
| LOGMODE_BOTH = LOGMODE_SYSLOG + LOGMODE_STDIO, |
| }; |
| extern const char *msg_eol; |
| extern smallint logmode; |
| extern uint8_t xfunc_error_retval; |
| extern void (*die_func)(void); |
| void xfunc_die(void) NORETURN FAST_FUNC; |
| void bb_show_usage(void) NORETURN FAST_FUNC; |
| void bb_error_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2))) FAST_FUNC; |
| void bb_simple_error_msg(const char *s) FAST_FUNC; |
| void bb_error_msg_and_die(const char *s, ...) __attribute__ ((noreturn, format (printf, 1, 2))) FAST_FUNC; |
| void bb_simple_error_msg_and_die(const char *s) NORETURN FAST_FUNC; |
| void bb_perror_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2))) FAST_FUNC; |
| void bb_simple_perror_msg(const char *s) FAST_FUNC; |
| void bb_perror_msg_and_die(const char *s, ...) __attribute__ ((noreturn, format (printf, 1, 2))) FAST_FUNC; |
| void bb_simple_perror_msg_and_die(const char *s) NORETURN FAST_FUNC; |
| void bb_herror_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2))) FAST_FUNC; |
| void bb_simple_herror_msg(const char *s) FAST_FUNC; |
| void bb_herror_msg_and_die(const char *s, ...) __attribute__ ((noreturn, format (printf, 1, 2))) FAST_FUNC; |
| void bb_simple_herror_msg_and_die(const char *s) NORETURN FAST_FUNC; |
| void bb_perror_nomsg_and_die(void) NORETURN FAST_FUNC; |
| void bb_perror_nomsg(void) FAST_FUNC; |
| void bb_verror_msg(const char *s, va_list p, const char *strerr) FAST_FUNC; |
| void bb_die_memory_exhausted(void) NORETURN FAST_FUNC; |
| void bb_logenv_override(void) FAST_FUNC; |
| |
| #if ENABLE_FEATURE_SYSLOG_INFO |
| void bb_info_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2))) FAST_FUNC; |
| void bb_simple_info_msg(const char *s) FAST_FUNC; |
| void bb_vinfo_msg(const char *s, va_list p) FAST_FUNC; |
| #else |
| #define bb_info_msg bb_error_msg |
| #define bb_simple_info_msg bb_simple_error_msg |
| #define bb_vinfo_msg(s,p) bb_verror_msg(s,p,NULL) |
| #endif |
| |
| #if ENABLE_WARN_SIMPLE_MSG |
| /* If enabled, cause calls to bb_error_msg() et al that only take a single |
| * parameter to generate a warning. |
| */ |
| static inline void __attribute__ ((deprecated("use bb_simple_error_msg instead"))) |
| bb_not_simple_error_msg(const char *s) { bb_simple_error_msg(s); } |
| static inline void __attribute__ ((deprecated("use bb_simple_error_msg_and_die instead"))) NORETURN |
| bb_not_simple_error_msg_and_die(const char *s) { bb_simple_error_msg_and_die(s); } |
| static inline void __attribute__ ((deprecated("use bb_simple_perror_msg instead"))) |
| bb_not_simple_perror_msg(const char *s) { bb_simple_perror_msg(s); } |
| static inline void __attribute__ ((deprecated("use bb_simple_perror_msg_and_die instead"))) NORETURN |
| bb_not_simple_perror_msg_and_die(const char *s) { bb_simple_perror_msg_and_die(s); } |
| static inline void __attribute__ ((deprecated("use bb_simple_herror_msg instead"))) |
| bb_not_simple_herror_msg(const char *s) { bb_simple_herror_msg(s); } |
| static inline void __attribute__ ((deprecated("use bb_simple_herror_msg_and_die instead"))) NORETURN |
| bb_not_simple_herror_msg_and_die(const char *s) { bb_simple_herror_msg_and_die(s); } |
| static inline void __attribute__ ((deprecated("use bb_simple_info_msg instead"))) |
| bb_not_simple_info_msg(const char *s) { bb_simple_info_msg(s); } |
| /* Override bb_error_msg() and related functions with macros that will |
| * substitute them for the equivalent bb_not_simple_error_msg() function when |
| * they are used with only a single parameter. Macro approach inspired by |
| * https://gustedt.wordpress.com/2010/06/08/detect-empty-macro-arguments and |
| * https://gustedt.wordpress.com/2010/06/03/default-arguments-for-c99 |
| */ |
| #define _ARG18(_0, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15, _16, _17, ...) _17 |
| #define BB_MSG_KIND(...) _ARG18(__VA_ARGS__, , , , , , , , , , , , , , , , , _not_simple) |
| #define _BB_MSG(name, kind, ...) bb##kind##name(__VA_ARGS__) |
| #define BB_MSG(name, kind, ...) _BB_MSG(name, kind, __VA_ARGS__) |
| #define bb_error_msg(...) BB_MSG(_error_msg, BB_MSG_KIND(__VA_ARGS__), __VA_ARGS__) |
| #define bb_error_msg_and_die(...) BB_MSG(_error_msg_and_die, BB_MSG_KIND(__VA_ARGS__), __VA_ARGS__) |
| #define bb_perror_msg(...) BB_MSG(_perror_msg, BB_MSG_KIND(__VA_ARGS__), __VA_ARGS__) |
| #define bb_perror_msg_and_die(...) BB_MSG(_perror_msg_and_die, BB_MSG_KIND(__VA_ARGS__), __VA_ARGS__) |
| #define bb_herror_msg(...) BB_MSG(_herror_msg, BB_MSG_KIND(__VA_ARGS__), __VA_ARGS__) |
| #define bb_herror_msg_and_die(...) BB_MSG(_herror_msg_and_die, BB_MSG_KIND(__VA_ARGS__), __VA_ARGS__) |
| #if ENABLE_FEATURE_SYSLOG_INFO |
| #define bb_info_msg(...) BB_MSG(_info_msg, BB_MSG_KIND(__VA_ARGS__), __VA_ARGS__) |
| #endif |
| #endif |
| |
| /* We need to export XXX_main from libbusybox |
| * only if we build "individual" binaries |
| */ |
| #if ENABLE_FEATURE_INDIVIDUAL |
| #define MAIN_EXTERNALLY_VISIBLE EXTERNALLY_VISIBLE |
| #else |
| #define MAIN_EXTERNALLY_VISIBLE |
| #endif |
| |
| /* Embedded script support */ |
| char *get_script_content(unsigned n) FAST_FUNC; |
| int scripted_main(int argc, char** argv) MAIN_EXTERNALLY_VISIBLE; |
| |
| /* Applets which are useful from another applets */ |
| int bb_cat(char** argv) FAST_FUNC; |
| int ash_main(int argc, char** argv) |
| #if ENABLE_ASH || ENABLE_SH_IS_ASH || ENABLE_BASH_IS_ASH |
| MAIN_EXTERNALLY_VISIBLE |
| #endif |
| ; |
| int hush_main(int argc, char** argv) |
| #if ENABLE_HUSH || ENABLE_SH_IS_HUSH || ENABLE_BASH_IS_HUSH |
| MAIN_EXTERNALLY_VISIBLE |
| #endif |
| ; |
| /* If shell needs them, they exist even if not enabled as applets */ |
| int echo_main(int argc, char** argv) IF_ECHO(MAIN_EXTERNALLY_VISIBLE); |
| int printf_main(int argc, char **argv) IF_PRINTF(MAIN_EXTERNALLY_VISIBLE); |
| int test_main(int argc, char **argv) |
| #if ENABLE_TEST || ENABLE_TEST1 || ENABLE_TEST2 |
| MAIN_EXTERNALLY_VISIBLE |
| #endif |
| ; |
| int kill_main(int argc, char **argv) |
| #if ENABLE_KILL || ENABLE_KILLALL || ENABLE_KILLALL5 |
| MAIN_EXTERNALLY_VISIBLE |
| #endif |
| ; |
| /* Similar, but used by chgrp, not shell */ |
| int chown_main(int argc, char **argv) IF_CHOWN(MAIN_EXTERNALLY_VISIBLE); |
| /* Used by ftpd */ |
| int ls_main(int argc, char **argv) IF_LS(MAIN_EXTERNALLY_VISIBLE); |
| /* Don't need IF_xxx() guard for these */ |
| int gunzip_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
| int bunzip2_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
| |
| #if ENABLE_ROUTE |
| void bb_displayroutes(int noresolve, int netstatfmt) FAST_FUNC; |
| #endif |
| |
| struct number_state { |
| unsigned width; |
| unsigned start; |
| unsigned inc; |
| const char *sep; |
| const char *empty_str; |
| smallint all, nonempty; |
| }; |
| int print_numbered_lines(struct number_state *ns, const char *filename) FAST_FUNC; |
| |
| |
| /* Networking */ |
| /* This structure defines protocol families and their handlers. */ |
| struct aftype { |
| const char *name; |
| const char *title; |
| int af; |
| int alen; |
| char* FAST_FUNC (*print)(unsigned char *); |
| const char* FAST_FUNC (*sprint)(struct sockaddr *, int numeric); |
| int FAST_FUNC (*input)(/*int type,*/ const char *bufp, struct sockaddr *); |
| void FAST_FUNC (*herror)(char *text); |
| int FAST_FUNC (*rprint)(int options); |
| int FAST_FUNC (*rinput)(int typ, int ext, char **argv); |
| /* may modify src */ |
| int FAST_FUNC (*getmask)(char *src, struct sockaddr *mask, char *name); |
| }; |
| /* This structure defines hardware protocols and their handlers. */ |
| struct hwtype { |
| const char *name; |
| const char *title; |
| int type; |
| int alen; |
| char* FAST_FUNC (*print)(unsigned char *); |
| int FAST_FUNC (*input)(const char *, struct sockaddr *); |
| int FAST_FUNC (*activate)(int fd); |
| int suppress_null_addr; |
| }; |
| #define IFNAME_SHOW_DOWNED_TOO ((char*)(intptr_t)1) |
| int display_interfaces(char *ifname) FAST_FUNC; |
| int in_ether(const char *bufp, struct sockaddr *sap) FAST_FUNC; |
| #if ENABLE_FEATURE_HWIB |
| int in_ib(const char *bufp, struct sockaddr *sap) FAST_FUNC; |
| #else |
| #define in_ib(a, b) 1 /* fail */ |
| #endif |
| const struct aftype *get_aftype(const char *name) FAST_FUNC; |
| const struct hwtype *get_hwtype(const char *name) FAST_FUNC; |
| const struct hwtype *get_hwntype(int type) FAST_FUNC; |
| |
| |
| extern int fstype_matches(const char *fstype, const char *comma_list) FAST_FUNC; |
| #ifdef HAVE_MNTENT_H |
| extern struct mntent *find_mount_point(const char *name, int subdir_too) FAST_FUNC; |
| #endif |
| extern void erase_mtab(const char * name) FAST_FUNC; |
| extern unsigned int tty_baud_to_value(speed_t speed) FAST_FUNC; |
| extern speed_t tty_value_to_baud(unsigned int value) FAST_FUNC; |
| #if ENABLE_DESKTOP |
| extern void bb_warn_ignoring_args(char *arg) FAST_FUNC; |
| #else |
| # define bb_warn_ignoring_args(arg) ((void)0) |
| #endif |
| |
| extern int get_linux_version_code(void) FAST_FUNC; |
| |
| char *query_loop(const char *device) FAST_FUNC; |
| int get_free_loop(void) FAST_FUNC; |
| int del_loop(const char *device) FAST_FUNC; |
| /* |
| * If *devname is not NULL, use that name, otherwise try to find free one, |
| * malloc and return it in *devname. |
| * return value is the opened fd to the loop device, or < on error |
| */ |
| int set_loop(char **devname, const char *file, unsigned long long offset, unsigned flags) FAST_FUNC; |
| /* These constants match linux/loop.h (without BB_ prefix): */ |
| #define BB_LO_FLAGS_READ_ONLY 1 |
| #define BB_LO_FLAGS_AUTOCLEAR 4 |
| #define BB_LO_FLAGS_PARTSCAN 8 |
| |
| /* Returns malloced str */ |
| char *bb_ask_noecho(int fd, int timeout, const char *prompt) FAST_FUNC; |
| /* Like bb_ask_noecho, but asks on stdin with no timeout. */ |
| char *bb_ask_noecho_stdin(const char *prompt) FAST_FUNC; |
| |
| int bb_ask_y_confirmation_FILE(FILE *fp) FAST_FUNC; |
| int bb_ask_y_confirmation(void) FAST_FUNC; |
| |
| /* Returns -1 if input is invalid. current_mode is a base for e.g. "u+rw" */ |
| int bb_parse_mode(const char* s, unsigned cur_mode) FAST_FUNC; |
| |
| /* |
| * Config file parser |
| */ |
| enum { |
| PARSE_COLLAPSE = 0x00010000, // treat consecutive delimiters as one |
| PARSE_TRIM = 0x00020000, // trim leading and trailing delimiters |
| // TODO: COLLAPSE and TRIM seem to always go in pair |
| PARSE_GREEDY = 0x00040000, // last token takes entire remainder of the line |
| PARSE_MIN_DIE = 0x00100000, // die if < min tokens found |
| // keep a copy of current line |
| PARSE_KEEP_COPY = 0x00200000 * ENABLE_FEATURE_CROND_D, |
| PARSE_EOL_COMMENTS = 0x00400000, // comments are recognized even if they aren't the first char |
| PARSE_ALT_COMMENTS = 0x00800000, // delim[0] and delim[1] are two different allowed comment chars |
| // (so far, delim[0] will only work as comment char for full-line comment) |
| // (IOW: it works as if PARSE_EOL_COMMENTS is not set. sysctl applet is okay with this) |
| PARSE_WS_COMMENTS = 0x01000000, // comments are recognized even if there is whitespace before |
| // ("line start><space><tab><space>#comment" is also comment, not only "line start>#comment") |
| // NORMAL is: |
| // * remove leading and trailing delimiters and collapse |
| // multiple delimiters into one |
| // * warn and continue if less than mintokens delimiters found |
| // * grab everything into last token |
| // * comments are recognized even if they aren't the first char |
| PARSE_NORMAL = PARSE_COLLAPSE | PARSE_TRIM | PARSE_GREEDY | PARSE_EOL_COMMENTS, |
| }; |
| typedef struct parser_t { |
| FILE *fp; |
| char *data; |
| char *line, *nline; |
| size_t line_alloc, nline_alloc; |
| int lineno; |
| } parser_t; |
| parser_t* config_open(const char *filename) FAST_FUNC; |
| parser_t* config_open2(const char *filename, FILE* FAST_FUNC (*fopen_func)(const char *path)) FAST_FUNC; |
| /* delims[0] is a comment char (use '\0' to disable), the rest are token delimiters */ |
| int config_read(parser_t *parser, char **tokens, unsigned flags, const char *delims) FAST_FUNC; |
| #define config_read(parser, tokens, max, min, str, flags) \ |
| config_read(parser, tokens, ((flags) | (((min) & 0xFF) << 8) | ((max) & 0xFF)), str) |
| void config_close(parser_t *parser) FAST_FUNC; |
| |
| /* Concatenate path and filename to new allocated buffer. |
| * Add "/" only as needed (no duplicate "//" are produced). |
| * If path is NULL, it is assumed to be "/". |
| * filename should not be NULL. */ |
| char *concat_path_file(const char *path, const char *filename) FAST_FUNC; |
| /* Returns NULL on . and .. */ |
| char *concat_subpath_file(const char *path, const char *filename) FAST_FUNC; |
| |
| |
| int bb_make_directory(char *path, long mode, int flags) FAST_FUNC; |
| |
| int get_signum(const char *name) FAST_FUNC; |
| const char *get_signame(int number) FAST_FUNC; |
| void print_signames(void) FAST_FUNC; |
| |
| char *bb_simplify_path(const char *path) FAST_FUNC; |
| /* Returns ptr to NUL */ |
| char *bb_simplify_abs_path_inplace(char *path) FAST_FUNC; |
| |
| #ifndef LOGIN_FAIL_DELAY |
| #define LOGIN_FAIL_DELAY 3 |
| #endif |
| extern void bb_do_delay(int seconds) FAST_FUNC; |
| extern void change_identity(const struct passwd *pw) FAST_FUNC; |
| extern void run_shell(const char *shell, int loginshell, const char **args) NORETURN FAST_FUNC; |
| |
| /* Returns $SHELL, getpwuid(getuid())->pw_shell, or DEFAULT_SHELL. |
| * Note that getpwuid result might need xstrdup'ing |
| * if there is a possibility of intervening getpwxxx() calls. |
| */ |
| const char *get_shell_name(void) FAST_FUNC; |
| |
| #if ENABLE_FEATURE_SETPRIV_CAPABILITIES || ENABLE_RUN_INIT |
| unsigned cap_name_to_number(const char *cap) FAST_FUNC; |
| void printf_cap(const char *pfx, unsigned cap_no) FAST_FUNC; |
| void drop_capability(int cap_ordinal) FAST_FUNC; |
| /* Structures inside "struct caps" are Linux-specific and libcap-specific: */ |
| #define DEFINE_STRUCT_CAPS \ |
| struct caps { \ |
| struct __user_cap_header_struct header; \ |
| unsigned u32s; \ |
| struct __user_cap_data_struct data[2]; \ |
| } |
| void getcaps(void *caps) FAST_FUNC; |
| #endif |
| |
| #if ENABLE_SELINUX |
| extern void renew_current_security_context(void) FAST_FUNC; |
| extern void set_current_security_context(security_context_t sid) FAST_FUNC; |
| extern context_t set_security_context_component(security_context_t cur_context, |
| char *user, char *role, char *type, char *range) FAST_FUNC; |
| extern void setfscreatecon_or_die(security_context_t scontext) FAST_FUNC; |
| extern void selinux_preserve_fcontext(int fdesc) FAST_FUNC; |
| #else |
| #define selinux_preserve_fcontext(fdesc) ((void)0) |
| #endif |
| extern void selinux_or_die(void) FAST_FUNC; |
| |
| |
| /* setup_environment: |
| * if chdir pw->pw_dir: ok: else if to_tmp == 1: goto /tmp else: goto / or die |
| * if clear_env = 1: cd(pw->pw_dir), clear environment, then set |
| * TERM=(old value) |
| * USER=pw->pw_name, LOGNAME=pw->pw_name |
| * PATH=bb_default_[root_]path |
| * HOME=pw->pw_dir |
| * SHELL=shell |
| * else if change_env = 1: |
| * if not root (if pw->pw_uid != 0): |
| * USER=pw->pw_name, LOGNAME=pw->pw_name |
| * HOME=pw->pw_dir |
| * SHELL=shell |
| * else does nothing |
| * |
| * NB: CHANGEENV and CLEARENV use setenv() - this leaks memory! |
| * If setup_environment() is used is vforked child, this leaks memory _in parent too_! |
| */ |
| #define SETUP_ENV_CHANGEENV (1 << 0) |
| #define SETUP_ENV_CLEARENV (1 << 1) |
| #define SETUP_ENV_TO_TMP (1 << 2) |
| #define SETUP_ENV_NO_CHDIR (1 << 4) |
| void setup_environment(const char *shell, int flags, const struct passwd *pw) FAST_FUNC; |
| void nuke_str(char *str) FAST_FUNC; |
| #if ENABLE_FEATURE_SECURETTY && !ENABLE_PAM |
| int is_tty_secure(const char *short_tty) FAST_FUNC; |
| #else |
| static ALWAYS_INLINE int is_tty_secure(const char *short_tty UNUSED_PARAM) { return 1; } |
| #endif |
| #define CHECKPASS_PW_HAS_EMPTY_PASSWORD 2 |
| int check_password(const struct passwd *pw, const char *plaintext) FAST_FUNC; |
| int ask_and_check_password_extended(const struct passwd *pw, int timeout, const char *prompt) FAST_FUNC; |
| int ask_and_check_password(const struct passwd *pw) FAST_FUNC; |
| /* Returns a malloced string */ |
| #if !ENABLE_USE_BB_CRYPT |
| #define pw_encrypt(clear, salt, cleanup) pw_encrypt(clear, salt) |
| #endif |
| extern char *pw_encrypt(const char *clear, const char *salt, int cleanup) FAST_FUNC; |
| extern int obscure(const char *old, const char *newval, const struct passwd *pwdp) FAST_FUNC; |
| /* |
| * rnd is additional random input. New one is returned. |
| * Useful if you call crypt_make_salt many times in a row: |
| * rnd = crypt_make_salt(buf1, 4, 0); |
| * rnd = crypt_make_salt(buf2, 4, rnd); |
| * rnd = crypt_make_salt(buf3, 4, rnd); |
| * (otherwise we risk having same salt generated) |
| */ |
| extern int crypt_make_salt(char *p, int cnt /*, int rnd*/) FAST_FUNC; |
| /* "$N$" + sha_salt_16_bytes + NUL */ |
| #define MAX_PW_SALT_LEN (3 + 16 + 1) |
| extern char* crypt_make_pw_salt(char p[MAX_PW_SALT_LEN], const char *algo) FAST_FUNC; |
| |
| |
| /* Returns number of lines changed, or -1 on error */ |
| #if !(ENABLE_FEATURE_ADDUSER_TO_GROUP || ENABLE_FEATURE_DEL_USER_FROM_GROUP) |
| #define update_passwd(filename, username, data, member) \ |
| update_passwd(filename, username, data) |
| #endif |
| extern int update_passwd(const char *filename, |
| const char *username, |
| const char *data, |
| const char *member) FAST_FUNC; |
| |
| int index_in_str_array(const char *const string_array[], const char *key) FAST_FUNC; |
| int index_in_strings(const char *strings, const char *key) FAST_FUNC; |
| int index_in_substr_array(const char *const string_array[], const char *key) FAST_FUNC; |
| int index_in_substrings(const char *strings, const char *key) FAST_FUNC; |
| const char *nth_string(const char *strings, int n) FAST_FUNC; |
| |
| extern void print_login_issue(const char *issue_file, const char *tty) FAST_FUNC; |
| extern void print_login_prompt(void) FAST_FUNC; |
| |
| char *xmalloc_ttyname(int fd) FAST_FUNC RETURNS_MALLOC; |
| /* NB: typically you want to pass fd 0, not 1. Think 'applet | grep something' */ |
| int get_terminal_width_height(int fd, unsigned *width, unsigned *height) FAST_FUNC; |
| int get_terminal_width(int fd) FAST_FUNC; |
| |
| int tcsetattr_stdin_TCSANOW(const struct termios *tp) FAST_FUNC; |
| #define TERMIOS_CLEAR_ISIG (1 << 0) |
| #define TERMIOS_RAW_CRNL_INPUT (1 << 1) |
| #define TERMIOS_RAW_CRNL_OUTPUT (1 << 2) |
| #define TERMIOS_RAW_CRNL (TERMIOS_RAW_CRNL_INPUT|TERMIOS_RAW_CRNL_OUTPUT) |
| #define TERMIOS_RAW_INPUT (1 << 3) |
| int get_termios_and_make_raw(int fd, struct termios *newterm, struct termios *oldterm, int flags) FAST_FUNC; |
| int set_termios_to_raw(int fd, struct termios *oldterm, int flags) FAST_FUNC; |
| |
| /* NB: "unsigned request" is crucial! "int request" will break some arches! */ |
| int ioctl_or_perror(int fd, unsigned request, void *argp, const char *fmt,...) __attribute__ ((format (printf, 4, 5))) FAST_FUNC; |
| int ioctl_or_perror_and_die(int fd, unsigned request, void *argp, const char *fmt,...) __attribute__ ((format (printf, 4, 5))) FAST_FUNC; |
| #if ENABLE_IOCTL_HEX2STR_ERROR |
| int bb_ioctl_or_warn(int fd, unsigned request, void *argp, const char *ioctl_name) FAST_FUNC; |
| int bb_xioctl(int fd, unsigned request, void *argp, const char *ioctl_name) FAST_FUNC; |
| #define ioctl_or_warn(fd,request,argp) bb_ioctl_or_warn(fd,request,argp,#request) |
| #define xioctl(fd,request,argp) bb_xioctl(fd,request,argp,#request) |
| #else |
| int bb_ioctl_or_warn(int fd, unsigned request, void *argp) FAST_FUNC; |
| int bb_xioctl(int fd, unsigned request, void *argp) FAST_FUNC; |
| #define ioctl_or_warn(fd,request,argp) bb_ioctl_or_warn(fd,request,argp) |
| #define xioctl(fd,request,argp) bb_xioctl(fd,request,argp) |
| #endif |
| |
| char *is_in_ino_dev_hashtable(const struct stat *statbuf) FAST_FUNC; |
| void add_to_ino_dev_hashtable(const struct stat *statbuf, const char *name) FAST_FUNC; |
| void reset_ino_dev_hashtable(void) FAST_FUNC; |
| #ifdef __GLIBC__ |
| /* At least glibc has horrendously large inline for this, so wrap it */ |
| unsigned long long bb_makedev(unsigned major, unsigned minor) FAST_FUNC; |
| #undef makedev |
| #define makedev(a,b) bb_makedev(a,b) |
| #endif |
| |
| |
| /* "Keycodes" that report an escape sequence. |
| * We use something which fits into signed char, |
| * yet doesn't represent any valid Unicode character. |
| * Also, -1 is reserved for error indication and we don't use it. */ |
| enum { |
| KEYCODE_UP = -2, |
| KEYCODE_DOWN = -3, |
| KEYCODE_RIGHT = -4, |
| KEYCODE_LEFT = -5, |
| KEYCODE_HOME = -6, |
| KEYCODE_END = -7, |
| KEYCODE_INSERT = -8, |
| KEYCODE_DELETE = -9, |
| KEYCODE_PAGEUP = -10, |
| KEYCODE_PAGEDOWN = -11, |
| KEYCODE_BACKSPACE = -12, /* Used only if Alt/Ctrl/Shifted */ |
| KEYCODE_D = -13, /* Used only if Alted */ |
| #if 0 |
| KEYCODE_FUN1 = , |
| KEYCODE_FUN2 = , |
| KEYCODE_FUN3 = , |
| KEYCODE_FUN4 = , |
| KEYCODE_FUN5 = , |
| KEYCODE_FUN6 = , |
| KEYCODE_FUN7 = , |
| KEYCODE_FUN8 = , |
| KEYCODE_FUN9 = , |
| KEYCODE_FUN10 = , |
| KEYCODE_FUN11 = , |
| KEYCODE_FUN12 = , |
| #endif |
| /* ^^^^^ Be sure that last defined value is small enough. |
| * Current read_key() code allows going up to -32 (0xfff..fffe0). |
| * This gives three upper bits in LSB to play with: |
| * KEYCODE_foo values are 0xfff..fffXX, lowest XX bits are: scavvvvv, |
| * s=0 if SHIFT, c=0 if CTRL, a=0 if ALT, |
| * vvvvv bits are the same for same key regardless of "shift bits". |
| */ |
| //KEYCODE_SHIFT_... = KEYCODE_... & ~0x80, |
| KEYCODE_CTRL_RIGHT = KEYCODE_RIGHT & ~0x40, |
| KEYCODE_CTRL_LEFT = KEYCODE_LEFT & ~0x40, |
| KEYCODE_ALT_RIGHT = KEYCODE_RIGHT & ~0x20, |
| KEYCODE_ALT_LEFT = KEYCODE_LEFT & ~0x20, |
| KEYCODE_ALT_BACKSPACE = KEYCODE_BACKSPACE & ~0x20, |
| KEYCODE_ALT_D = KEYCODE_D & ~0x20, |
| |
| KEYCODE_CURSOR_POS = -0x100, /* 0xfff..fff00 */ |
| /* How long is the longest ESC sequence we know? |
| * We want it big enough to be able to contain |
| * cursor position sequence "ESC [ 9999 ; 9999 R" |
| */ |
| KEYCODE_BUFFER_SIZE = 16 |
| }; |
| /* Note: fd may be in blocking or non-blocking mode, both make sense. |
| * For one, less uses non-blocking mode. |
| * Only the first read syscall inside read_key may block indefinitely |
| * (unless fd is in non-blocking mode), |
| * subsequent reads will time out after a few milliseconds. |
| * Return of -1 means EOF or error (errno == 0 on EOF). |
| * buffer[0] is used as a counter of buffered chars and must be 0 |
| * on first call. |
| * timeout: |
| * -2: do not poll(-1) for input - read() it, return on EAGAIN at once |
| * -1: poll(-1) (i.e. block even on NONBLOCKed fd) |
| * >=0: poll() for TIMEOUT milliseconds, return -1/EAGAIN on timeout |
| */ |
| int64_t read_key(int fd, char *buffer, int timeout) FAST_FUNC; |
| void read_key_ungets(char *buffer, const char *str, unsigned len) FAST_FUNC; |
| |
| |
| #if ENABLE_FEATURE_EDITING |
| /* It's NOT just ENABLEd or disabled. It's a number: */ |
| # if defined CONFIG_FEATURE_EDITING_HISTORY && CONFIG_FEATURE_EDITING_HISTORY > 0 |
| # define MAX_HISTORY (CONFIG_FEATURE_EDITING_HISTORY + 0) |
| unsigned size_from_HISTFILESIZE(const char *hp) FAST_FUNC; |
| # else |
| # define MAX_HISTORY 0 |
| # endif |
| typedef const char *get_exe_name_t(int i) FAST_FUNC; |
| typedef struct line_input_t { |
| int flags; |
| int timeout; |
| const char *path_lookup; |
| # if ENABLE_FEATURE_TAB_COMPLETION \ |
| && (ENABLE_ASH || ENABLE_SH_IS_ASH || ENABLE_BASH_IS_ASH \ |
| || ENABLE_HUSH || ENABLE_SH_IS_HUSH || ENABLE_BASH_IS_HUSH \ |
| ) |
| /* function to fetch additional application-specific names to match */ |
| get_exe_name_t *get_exe_name; |
| # define EDITING_HAS_get_exe_name 1 |
| # endif |
| # if MAX_HISTORY |
| int cnt_history; |
| int cur_history; |
| int max_history; /* must never be <= 0 */ |
| # if ENABLE_FEATURE_EDITING_SAVEHISTORY |
| /* meaning of this field depends on FEATURE_EDITING_SAVE_ON_EXIT: |
| * if !FEATURE_EDITING_SAVE_ON_EXIT: "how many lines are |
| * in on-disk history" |
| * if FEATURE_EDITING_SAVE_ON_EXIT: "how many in-memory lines are |
| * also in on-disk history (and thus need to be skipped on save)" |
| */ |
| unsigned cnt_history_in_file; |
| const char *hist_file; |
| # endif |
| char *history[MAX_HISTORY + 1]; |
| # endif |
| } line_input_t; |
| enum { |
| DO_HISTORY = 1 * (MAX_HISTORY > 0), |
| TAB_COMPLETION = 2 * ENABLE_FEATURE_TAB_COMPLETION, |
| USERNAME_COMPLETION = 4 * ENABLE_FEATURE_USERNAME_COMPLETION, |
| VI_MODE = 8 * ENABLE_FEATURE_EDITING_VI, |
| WITH_PATH_LOOKUP = 0x10, |
| FOR_SHELL = DO_HISTORY | TAB_COMPLETION | USERNAME_COMPLETION, |
| }; |
| line_input_t *new_line_input_t(int flags) FAST_FUNC; |
| void free_line_input_t(line_input_t *n) FAST_FUNC; |
| /* |
| * maxsize must be >= 2. |
| * Returns: |
| * -1 on read errors or EOF, or on bare Ctrl-D, |
| * 0 on ctrl-C (the line entered is still returned in 'command'), |
| * >0 length of input string, including terminating '\n' |
| */ |
| int read_line_input(line_input_t *st, const char *prompt, char *command, int maxsize) FAST_FUNC; |
| void show_history(const line_input_t *st) FAST_FUNC; |
| # if ENABLE_FEATURE_EDITING_SAVE_ON_EXIT |
| void save_history(line_input_t *st); |
| # endif |
| #else |
| #define MAX_HISTORY 0 |
| int read_line_input(const char* prompt, char* command, int maxsize) FAST_FUNC; |
| #define read_line_input(state, prompt, command, maxsize) \ |
| read_line_input(prompt, command, maxsize) |
| #endif |
| |
| #ifndef EDITING_HAS_get_exe_name |
| # define EDITING_HAS_get_exe_name 0 |
| #endif |
| |
| |
| #ifndef COMM_LEN |
| # ifdef TASK_COMM_LEN |
| enum { COMM_LEN = TASK_COMM_LEN }; |
| # else |
| /* synchronize with sizeof(task_struct.comm) in /usr/include/linux/sched.h */ |
| enum { COMM_LEN = 16 }; |
| # endif |
| #endif |
| |
| struct smaprec { |
| unsigned long mapped_rw; |
| unsigned long mapped_ro; |
| unsigned long shared_clean; |
| unsigned long shared_dirty; |
| unsigned long private_clean; |
| unsigned long private_dirty; |
| unsigned long stack; |
| unsigned long smap_pss, smap_swap; |
| unsigned long smap_size; |
| // For mixed 32/64 userspace, 32-bit pmap still needs |
| // 64-bit field here to correctly show 64-bit processes: |
| unsigned long long smap_start; |
| // (strictly speaking, other fields need to be wider too, |
| // but they are in kbytes, not bytes, and they hold sizes, |
| // not start addresses, sizes tend to be less than 4 terabytes) |
| char smap_mode[5]; |
| char *smap_name; |
| }; |
| |
| #if !ENABLE_PMAP |
| #define procps_read_smaps(pid, total, cb, data) \ |
| procps_read_smaps(pid, total) |
| #endif |
| int FAST_FUNC procps_read_smaps(pid_t pid, struct smaprec *total, |
| void (*cb)(struct smaprec *, void *), void *data); |
| |
| typedef struct procps_status_t { |
| DIR *dir; |
| IF_FEATURE_SHOW_THREADS(DIR *task_dir;) |
| uint8_t shift_pages_to_bytes; |
| uint8_t shift_pages_to_kb; |
| /* Fields are set to 0/NULL if failed to determine (or not requested) */ |
| uint16_t argv_len; |
| char *argv0; |
| char *exe; |
| IF_SELINUX(char *context;) |
| IF_FEATURE_SHOW_THREADS(unsigned main_thread_pid;) |
| /* Everything below must contain no ptrs to malloc'ed data: |
| * it is memset(0) for each process in procps_scan() */ |
| unsigned long vsz, rss; /* we round it to kbytes */ |
| unsigned long stime, utime; |
| unsigned long start_time; |
| unsigned pid; |
| unsigned ppid; |
| unsigned pgid; |
| unsigned sid; |
| unsigned uid; |
| unsigned gid; |
| #if ENABLE_FEATURE_PS_ADDITIONAL_COLUMNS |
| unsigned ruid; |
| unsigned rgid; |
| int niceness; |
| #endif |
| unsigned tty_major,tty_minor; |
| #if ENABLE_FEATURE_TOPMEM |
| struct smaprec smaps; |
| #endif |
| char state[4]; |
| /* basename of executable in exec(2), read from /proc/N/stat |
| * (if executable is symlink or script, it is NOT replaced |
| * by link target or interpreter name) */ |
| char comm[COMM_LEN]; |
| /* user/group? - use passwd/group parsing functions */ |
| #if ENABLE_FEATURE_TOP_SMP_PROCESS |
| int last_seen_on_cpu; |
| #endif |
| } procps_status_t; |
| /* flag bits for procps_scan(xx, flags) calls */ |
| enum { |
| PSSCAN_PID = 1 << 0, |
| PSSCAN_PPID = 1 << 1, |
| PSSCAN_PGID = 1 << 2, |
| PSSCAN_SID = 1 << 3, |
| PSSCAN_UIDGID = 1 << 4, |
| PSSCAN_COMM = 1 << 5, |
| /* PSSCAN_CMD = 1 << 6, - use read_cmdline instead */ |
| PSSCAN_ARGV0 = 1 << 7, |
| PSSCAN_EXE = 1 << 8, |
| PSSCAN_STATE = 1 << 9, |
| PSSCAN_VSZ = 1 << 10, |
| PSSCAN_RSS = 1 << 11, |
| PSSCAN_STIME = 1 << 12, |
| PSSCAN_UTIME = 1 << 13, |
| PSSCAN_TTY = 1 << 14, |
| PSSCAN_SMAPS = (1 << 15) * ENABLE_FEATURE_TOPMEM, |
| /* NB: used by find_pid_by_name(). Any applet using it |
| * needs to be mentioned here. */ |
| PSSCAN_ARGVN = (1 << 16) * (ENABLE_KILLALL |
| || ENABLE_PGREP || ENABLE_PKILL |
| || ENABLE_PIDOF |
| || ENABLE_SESTATUS |
| ), |
| PSSCAN_CONTEXT = (1 << 17) * ENABLE_SELINUX, |
| PSSCAN_START_TIME = 1 << 18, |
| PSSCAN_CPU = (1 << 19) * ENABLE_FEATURE_TOP_SMP_PROCESS, |
| PSSCAN_NICE = (1 << 20) * ENABLE_FEATURE_PS_ADDITIONAL_COLUMNS, |
| PSSCAN_RUIDGID = (1 << 21) * ENABLE_FEATURE_PS_ADDITIONAL_COLUMNS, |
| PSSCAN_TASKS = (1 << 22) * ENABLE_FEATURE_SHOW_THREADS, |
| }; |
| //procps_status_t* alloc_procps_scan(void) FAST_FUNC; |
| void free_procps_scan(procps_status_t* sp) FAST_FUNC; |
| procps_status_t* procps_scan(procps_status_t* sp, int flags) FAST_FUNC; |
| /* Format cmdline (up to col chars) into char buf[size] */ |
| /* Puts [comm] if cmdline is empty (-> process is a kernel thread) */ |
| void read_cmdline(char *buf, int size, unsigned pid, const char *comm) FAST_FUNC; |
| pid_t *find_pid_by_name(const char* procName) FAST_FUNC; |
| pid_t *pidlist_reverse(pid_t *pidList) FAST_FUNC; |
| int starts_with_cpu(const char *str) FAST_FUNC; |
| unsigned get_cpu_count(void) FAST_FUNC; |
| |
| |
| /* Use strict=1 if you process input from untrusted source: |
| * it will return NULL on invalid %xx (bad hex chars) |
| * and str + 1 if decoded char is / or NUL. |
| * In non-strict mode, it always succeeds (returns str), |
| * and also it additionally decoded '+' to space. |
| */ |
| char *percent_decode_in_place(char *str, int strict) FAST_FUNC; |
| |
| |
| extern const char bb_uuenc_tbl_base64[] ALIGN1; |
| extern const char bb_uuenc_tbl_std[] ALIGN1; |
| void bb_uuencode(char *store, const void *s, int length, const char *tbl) FAST_FUNC; |
| enum { |
| BASE64_FLAG_UU_STOP = 0x100, |
| /* Sign-extends to a value which never matches fgetc result: */ |
| BASE64_FLAG_NO_STOP_CHAR = 0x80, |
| }; |
| const char *decode_base64(char **pp_dst, const char *src) FAST_FUNC; |
| void read_base64(FILE *src_stream, FILE *dst_stream, int flags) FAST_FUNC; |
| |
| typedef struct md5_ctx_t { |
| uint8_t wbuffer[64]; /* always correctly aligned for uint64_t */ |
| void (*process_block)(struct md5_ctx_t*) FAST_FUNC; |
| uint64_t total64; /* must be directly before hash[] */ |
| uint32_t hash[8]; /* 4 elements for md5, 5 for sha1, 8 for sha256 */ |
| } md5_ctx_t; |
| typedef struct md5_ctx_t sha1_ctx_t; |
| typedef struct md5_ctx_t sha256_ctx_t; |
| typedef struct sha512_ctx_t { |
| uint64_t total64[2]; /* must be directly before hash[] */ |
| uint64_t hash[8]; |
| uint8_t wbuffer[128]; /* always correctly aligned for uint64_t */ |
| } sha512_ctx_t; |
| typedef struct sha3_ctx_t { |
| uint64_t state[25]; |
| unsigned bytes_queued; |
| unsigned input_block_bytes; |
| } sha3_ctx_t; |
| void md5_begin(md5_ctx_t *ctx) FAST_FUNC; |
| void md5_hash(md5_ctx_t *ctx, const void *buffer, size_t len) FAST_FUNC; |
| unsigned md5_end(md5_ctx_t *ctx, void *resbuf) FAST_FUNC; |
| void sha1_begin(sha1_ctx_t *ctx) FAST_FUNC; |
| #define sha1_hash md5_hash |
| unsigned sha1_end(sha1_ctx_t *ctx, void *resbuf) FAST_FUNC; |
| void sha256_begin(sha256_ctx_t *ctx) FAST_FUNC; |
| #define sha256_hash md5_hash |
| #define sha256_end sha1_end |
| void sha512_begin(sha512_ctx_t *ctx) FAST_FUNC; |
| void sha512_hash(sha512_ctx_t *ctx, const void *buffer, size_t len) FAST_FUNC; |
| unsigned sha512_end(sha512_ctx_t *ctx, void *resbuf) FAST_FUNC; |
| void sha3_begin(sha3_ctx_t *ctx) FAST_FUNC; |
| void sha3_hash(sha3_ctx_t *ctx, const void *buffer, size_t len) FAST_FUNC; |
| unsigned sha3_end(sha3_ctx_t *ctx, void *resbuf) FAST_FUNC; |
| /* TLS benefits from knowing that sha1 and sha256 share these. Give them "agnostic" names too */ |
| typedef struct md5_ctx_t md5sha_ctx_t; |
| #define md5sha_hash md5_hash |
| #define sha_end sha1_end |
| |
| extern uint32_t *global_crc32_table; |
| uint32_t *crc32_filltable(uint32_t *tbl256, int endian) FAST_FUNC; |
| uint32_t *crc32_new_table_le(void) FAST_FUNC; |
| uint32_t *global_crc32_new_table_le(void) FAST_FUNC; |
| uint32_t crc32_block_endian1(uint32_t val, const void *buf, unsigned len, uint32_t *crc_table) FAST_FUNC; |
| uint32_t crc32_block_endian0(uint32_t val, const void *buf, unsigned len, uint32_t *crc_table) FAST_FUNC; |
| |
| typedef struct masks_labels_t { |
| const char *labels; |
| const int masks[]; |
| } masks_labels_t; |
| int print_flags_separated(const int *masks, const char *labels, |
| int flags, const char *separator) FAST_FUNC; |
| int print_flags(const masks_labels_t *ml, int flags) FAST_FUNC; |
| |
| typedef struct bb_progress_t { |
| unsigned last_size; |
| unsigned last_update_sec; |
| unsigned last_change_sec; |
| unsigned start_sec; |
| /*unsigned last_eta;*/ |
| const char *curfile; |
| } bb_progress_t; |
| |
| #define is_bb_progress_inited(p) ((p)->curfile != NULL) |
| #define bb_progress_free(p) do { \ |
| if (ENABLE_UNICODE_SUPPORT) free((char*)((p)->curfile)); \ |
| (p)->curfile = NULL; \ |
| } while (0) |
| void bb_progress_init(bb_progress_t *p, const char *curfile) FAST_FUNC; |
| int bb_progress_update(bb_progress_t *p, |
| uoff_t beg_range, |
| uoff_t transferred, |
| uoff_t totalsize) FAST_FUNC; |
| |
| unsigned ubi_devnum_from_devname(const char *str) FAST_FUNC; |
| int ubi_get_volid_by_name(unsigned ubi_devnum, const char *vol_name) FAST_FUNC; |
| |
| |
| extern const char *applet_name; |
| |
| /* Some older linkers don't perform string merging, we used to have common strings |
| * as global arrays to do it by hand. But: |
| * (1) newer linkers do it themselves, |
| * (2) however, they DONT merge string constants with global arrays, |
| * even if the value is the same (!). Thus global arrays actually |
| * increased size a bit: for example, "/etc/passwd" string from libc |
| * wasn't merged with bb_path_passwd_file[] array! |
| * Therefore now we use #defines. |
| */ |
| /* "BusyBox vN.N.N (timestamp or extra_version)" */ |
| extern const char bb_banner[] ALIGN1; |
| extern const char bb_msg_memory_exhausted[] ALIGN1; |
| extern const char bb_msg_invalid_date[] ALIGN1; |
| #define bb_msg_read_error "read error" |
| #define bb_msg_write_error "write error" |
| extern const char bb_msg_unknown[] ALIGN1; |
| extern const char bb_msg_can_not_create_raw_socket[] ALIGN1; |
| extern const char bb_msg_perm_denied_are_you_root[] ALIGN1; |
| extern const char bb_msg_you_must_be_root[] ALIGN1; |
| extern const char bb_msg_requires_arg[] ALIGN1; |
| extern const char bb_msg_invalid_arg_to[] ALIGN1; |
| extern const char bb_msg_standard_input[] ALIGN1; |
| extern const char bb_msg_standard_output[] ALIGN1; |
| |
| /* NB: (bb_hexdigits_upcase[i] | 0x20) -> lowercase hex digit */ |
| extern const char bb_hexdigits_upcase[] ALIGN1; |
| |
| extern const char bb_path_wtmp_file[] ALIGN1; |
| |
| /* Busybox mount uses either /proc/mounts or /etc/mtab to |
| * get the list of currently mounted filesystems */ |
| #define bb_path_mtab_file IF_FEATURE_MTAB_SUPPORT("/etc/mtab")IF_NOT_FEATURE_MTAB_SUPPORT("/proc/mounts") |
| |
| #define bb_path_passwd_file _PATH_PASSWD |
| #define bb_path_group_file _PATH_GROUP |
| #define bb_path_shadow_file _PATH_SHADOW |
| #define bb_path_gshadow_file _PATH_GSHADOW |
| |
| #define bb_path_motd_file "/etc/motd" |
| |
| #define bb_dev_null "/dev/null" |
| extern const char bb_busybox_exec_path[] ALIGN1; |
| /* allow default system PATH to be extended via CFLAGS */ |
| #ifndef BB_ADDITIONAL_PATH |
| #define BB_ADDITIONAL_PATH "" |
| #endif |
| #define BB_PATH_ROOT_PATH "PATH=/sbin:/usr/sbin:/bin:/usr/bin" BB_ADDITIONAL_PATH |
| extern const char bb_PATH_root_path[] ALIGN1; /* BB_PATH_ROOT_PATH */ |
| #define bb_default_root_path (bb_PATH_root_path + sizeof("PATH")) |
| /* util-linux manpage says /sbin:/bin:/usr/sbin:/usr/bin, |
| * but I want to save a few bytes here: |
| */ |
| #define bb_default_path (bb_PATH_root_path + sizeof("PATH=/sbin:/usr/sbin")) |
| |
| extern const int const_int_0; |
| //extern const int const_int_1; |
| |
| /* This struct is deliberately not defined. */ |
| /* See docs/keep_data_small.txt */ |
| struct globals; |
| /* '*const' ptr makes gcc optimize code much better. |
| * Magic prevents ptr_to_globals from going into rodata. |
| * If you want to assign a value, use SET_PTR_TO_GLOBALS(x) */ |
| extern struct globals *const ptr_to_globals; |
| |
| #if defined(__clang_major__) && __clang_major__ >= 9 |
| /* Clang/llvm drops assignment to "constant" storage. Silently. |
| * Needs serious convincing to not eliminate the store. |
| */ |
| static ALWAYS_INLINE void* not_const_pp(const void *p) |
| { |
| void *pp; |
| __asm__ __volatile__( |
| "# forget that p points to const" |
| : /*outputs*/ "=r" (pp) |
| : /*inputs*/ "0" (p) |
| ); |
| return pp; |
| } |
| #else |
| static ALWAYS_INLINE void* not_const_pp(const void *p) { return (void*)p; } |
| #endif |
| |
| /* At least gcc 3.4.6 on mipsel system needs optimization barrier */ |
| #define barrier() __asm__ __volatile__("":::"memory") |
| #define SET_PTR_TO_GLOBALS(x) do { \ |
| (*(struct globals**)not_const_pp(&ptr_to_globals)) = (void*)(x); \ |
| barrier(); \ |
| } while (0) |
| |
| #define FREE_PTR_TO_GLOBALS() do { \ |
| if (ENABLE_FEATURE_CLEAN_UP) { \ |
| free(ptr_to_globals); \ |
| } \ |
| } while (0) |
| |
| /* You can change LIBBB_DEFAULT_LOGIN_SHELL, but don't use it, |
| * use bb_default_login_shell and following defines. |
| * If you change LIBBB_DEFAULT_LOGIN_SHELL, |
| * don't forget to change increment constant. */ |
| #define LIBBB_DEFAULT_LOGIN_SHELL "-/bin/sh" |
| extern const char bb_default_login_shell[] ALIGN1; |
| /* "/bin/sh" */ |
| #define DEFAULT_SHELL (bb_default_login_shell+1) |
| /* "sh" */ |
| #define DEFAULT_SHELL_SHORT_NAME (bb_default_login_shell+6) |
| |
| /* The following devices are the same on all systems. */ |
| #define CURRENT_TTY "/dev/tty" |
| #define DEV_CONSOLE "/dev/console" |
| |
| #if defined(__FreeBSD_kernel__) |
| # define CURRENT_VC CURRENT_TTY |
| # define VC_1 "/dev/ttyv0" |
| # define VC_2 "/dev/ttyv1" |
| # define VC_3 "/dev/ttyv2" |
| # define VC_4 "/dev/ttyv3" |
| # define VC_5 "/dev/ttyv4" |
| # define VC_FORMAT "/dev/ttyv%d" |
| #elif defined(__GNU__) |
| # define CURRENT_VC CURRENT_TTY |
| # define VC_1 "/dev/tty1" |
| # define VC_2 "/dev/tty2" |
| # define VC_3 "/dev/tty3" |
| # define VC_4 "/dev/tty4" |
| # define VC_5 "/dev/tty5" |
| # define VC_FORMAT "/dev/tty%d" |
| #elif ENABLE_FEATURE_DEVFS |
| /*Linux, obsolete devfs names */ |
| # define CURRENT_VC "/dev/vc/0" |
| # define VC_1 "/dev/vc/1" |
| # define VC_2 "/dev/vc/2" |
| # define VC_3 "/dev/vc/3" |
| # define VC_4 "/dev/vc/4" |
| # define VC_5 "/dev/vc/5" |
| # define VC_FORMAT "/dev/vc/%d" |
| # define LOOP_FORMAT "/dev/loop/%u" |
| # define LOOP_NAMESIZE (sizeof("/dev/loop/") + sizeof(int)*3 + 1) |
| # define LOOP_NAME "/dev/loop/" |
| # define FB_0 "/dev/fb/0" |
| #else |
| /*Linux, normal names */ |
| # define CURRENT_VC "/dev/tty0" |
| # define VC_1 "/dev/tty1" |
| # define VC_2 "/dev/tty2" |
| # define VC_3 "/dev/tty3" |
| # define VC_4 "/dev/tty4" |
| # define VC_5 "/dev/tty5" |
| # define VC_FORMAT "/dev/tty%d" |
| # define LOOP_FORMAT "/dev/loop%u" |
| # define LOOP_NAMESIZE (sizeof("/dev/loop") + sizeof(int)*3 + 1) |
| # define LOOP_NAME "/dev/loop" |
| # define FB_0 "/dev/fb0" |
| #endif |
| |
| // storage helpers for mk*fs utilities |
| char BUG_wrong_field_size(void); |
| #define STORE_LE(field, value) \ |
| do { \ |
| if (sizeof(field) == 4) \ |
| field = SWAP_LE32((uint32_t)(value)); \ |
| else if (sizeof(field) == 2) \ |
| field = SWAP_LE16((uint16_t)(value)); \ |
| else if (sizeof(field) == 1) \ |
| field = (uint8_t)(value); \ |
| else \ |
| BUG_wrong_field_size(); \ |
| } while (0) |
| |
| #define FETCH_LE32(field) \ |
| (sizeof(field) == 4 ? SWAP_LE32(field) : BUG_wrong_field_size()) |
| |
| |
| #define ARRAY_SIZE(x) ((unsigned)(sizeof(x) / sizeof((x)[0]))) |
| #define BUILD_BUG_ON(condition) ((void)sizeof(char[1 - 2*!!(condition)])) |
| |
| |
| /* We redefine ctype macros. Unicode-correct handling of char types |
| * can't be done with such byte-oriented operations anyway, |
| * we don't lose anything. |
| */ |
| #undef isalnum |
| #undef isalpha |
| #undef isascii |
| #undef isblank |
| #undef iscntrl |
| #undef isdigit |
| #undef isgraph |
| #undef islower |
| #undef isprint |
| #undef ispunct |
| #undef isspace |
| #undef isupper |
| #undef isxdigit |
| #undef toupper |
| #undef tolower |
| |
| /* We save ~500 bytes on isdigit alone. |
| * BTW, x86 likes (unsigned char) cast more than (unsigned). */ |
| |
| /* These work the same for ASCII and Unicode, |
| * assuming no one asks "is this a *Unicode* letter?" using isalpha(letter) */ |
| #define isascii(a) ((unsigned char)(a) <= 0x7f) |
| #define isdigit(a) ((unsigned char)((a) - '0') <= 9) |
| #define isupper(a) ((unsigned char)((a) - 'A') <= ('Z' - 'A')) |
| #define islower(a) ((unsigned char)((a) - 'a') <= ('z' - 'a')) |
| #define isalpha(a) ((unsigned char)(((a)|0x20) - 'a') <= ('z' - 'a')) |
| #define isblank(a) ({ unsigned char bb__isblank = (a); bb__isblank == ' ' || bb__isblank == '\t'; }) |
| #define iscntrl(a) ({ unsigned char bb__iscntrl = (a); bb__iscntrl < ' ' || bb__iscntrl == 0x7f; }) |
| /* In POSIX/C locale isspace is only these chars: "\t\n\v\f\r" and space. |
| * "\t\n\v\f\r" happen to have ASCII codes 9,10,11,12,13. |
| */ |
| #define isspace(a) ({ unsigned char bb__isspace = (a) - 9; bb__isspace == (' ' - 9) || bb__isspace <= (13 - 9); }) |
| // Unsafe wrt NUL: #define ispunct(a) (strchr("!\"#$%&'()*+,-./:;<=>?@[\\]^_`{|}~", (a)) != NULL) |
| #define ispunct(a) (strchrnul("!\"#$%&'()*+,-./:;<=>?@[\\]^_`{|}~", (a))[0]) |
| // Bigger code: #define isalnum(a) ({ unsigned char bb__isalnum = (a) - '0'; bb__isalnum <= 9 || ((bb__isalnum - ('A' - '0')) & 0xdf) <= 25; }) |
| #define isalnum(a) bb_ascii_isalnum(a) |
| static ALWAYS_INLINE int bb_ascii_isalnum(unsigned char a) |
| { |
| unsigned char b = a - '0'; |
| if (b <= 9) |
| return (b <= 9); |
| b = (a|0x20) - 'a'; |
| return b <= 'z' - 'a'; |
| } |
| #define isxdigit(a) bb_ascii_isxdigit(a) |
| static ALWAYS_INLINE int bb_ascii_isxdigit(unsigned char a) |
| { |
| unsigned char b = a - '0'; |
| if (b <= 9) |
| return (b <= 9); |
| b = (a|0x20) - 'a'; |
| return b <= 'f' - 'a'; |
| } |
| #define toupper(a) bb_ascii_toupper(a) |
| static ALWAYS_INLINE unsigned char bb_ascii_toupper(unsigned char a) |
| { |
| unsigned char b = a - 'a'; |
| if (b <= ('z' - 'a')) |
| a -= 'a' - 'A'; |
| return a; |
| } |
| #define tolower(a) bb_ascii_tolower(a) |
| static ALWAYS_INLINE unsigned char bb_ascii_tolower(unsigned char a) |
| { |
| unsigned char b = a - 'A'; |
| if (b <= ('Z' - 'A')) |
| a += 'a' - 'A'; |
| return a; |
| } |
| |
| /* In ASCII and Unicode, these are likely to be very different. |
| * Let's prevent ambiguous usage from the start */ |
| #define isgraph(a) isgraph_is_ambiguous_dont_use(a) |
| #define isprint(a) isprint_is_ambiguous_dont_use(a) |
| /* NB: must not treat EOF as isgraph or isprint */ |
| #define isgraph_asciionly(a) ((unsigned)((a) - 0x21) <= 0x7e - 0x21) |
| #define isprint_asciionly(a) ((unsigned)((a) - 0x20) <= 0x7e - 0x20) |
| |
| |
| /* Simple unit-testing framework */ |
| |
| typedef void (*bbunit_testfunc)(void); |
| |
| struct bbunit_listelem { |
| const char* name; |
| bbunit_testfunc testfunc; |
| }; |
| |
| void bbunit_registertest(struct bbunit_listelem* test); |
| void bbunit_settestfailed(void); |
| |
| #define BBUNIT_DEFINE_TEST(NAME) \ |
| static void bbunit_##NAME##_test(void); \ |
| static struct bbunit_listelem bbunit_##NAME##_elem = { \ |
| .name = #NAME, \ |
| .testfunc = bbunit_##NAME##_test, \ |
| }; \ |
| static void INIT_FUNC bbunit_##NAME##_register(void) \ |
| { \ |
| bbunit_registertest(&bbunit_##NAME##_elem); \ |
| } \ |
| static void bbunit_##NAME##_test(void) |
| |
| /* |
| * Both 'goto bbunit_end' and 'break' are here only to get rid |
| * of compiler warnings. |
| */ |
| #define BBUNIT_ENDTEST \ |
| do { \ |
| goto bbunit_end; \ |
| bbunit_end: \ |
| break; \ |
| } while (0) |
| |
| #define BBUNIT_PRINTASSERTFAIL \ |
| do { \ |
| bb_error_msg( \ |
| "[ERROR] Assertion failed in file %s, line %d", \ |
| __FILE__, __LINE__); \ |
| } while (0) |
| |
| #define BBUNIT_ASSERTION_FAILED \ |
| do { \ |
| bbunit_settestfailed(); \ |
| goto bbunit_end; \ |
| } while (0) |
| |
| /* |
| * Assertions. |
| * For now we only offer assertions which cause tests to fail |
| * immediately. In the future 'expects' might be added too - |
| * similar to those offered by the gtest framework. |
| */ |
| #define BBUNIT_ASSERT_EQ(EXPECTED, ACTUAL) \ |
| do { \ |
| if ((EXPECTED) != (ACTUAL)) { \ |
| BBUNIT_PRINTASSERTFAIL; \ |
| bb_error_msg("[ERROR] '%s' isn't equal to '%s'", \ |
| #EXPECTED, #ACTUAL); \ |
| BBUNIT_ASSERTION_FAILED; \ |
| } \ |
| } while (0) |
| |
| #define BBUNIT_ASSERT_NOTEQ(EXPECTED, ACTUAL) \ |
| do { \ |
| if ((EXPECTED) == (ACTUAL)) { \ |
| BBUNIT_PRINTASSERTFAIL; \ |
| bb_error_msg("[ERROR] '%s' is equal to '%s'", \ |
| #EXPECTED, #ACTUAL); \ |
| BBUNIT_ASSERTION_FAILED; \ |
| } \ |
| } while (0) |
| |
| #define BBUNIT_ASSERT_NOTNULL(PTR) \ |
| do { \ |
| if ((PTR) == NULL) { \ |
| BBUNIT_PRINTASSERTFAIL; \ |
| bb_error_msg("[ERROR] '%s' is NULL!", #PTR); \ |
| BBUNIT_ASSERTION_FAILED; \ |
| } \ |
| } while (0) |
| |
| #define BBUNIT_ASSERT_NULL(PTR) \ |
| do { \ |
| if ((PTR) != NULL) { \ |
| BBUNIT_PRINTASSERTFAIL; \ |
| bb_error_msg("[ERROR] '%s' is not NULL!", #PTR); \ |
| BBUNIT_ASSERTION_FAILED; \ |
| } \ |
| } while (0) |
| |
| #define BBUNIT_ASSERT_FALSE(STATEMENT) \ |
| do { \ |
| if ((STATEMENT)) { \ |
| BBUNIT_PRINTASSERTFAIL; \ |
| bb_error_msg("[ERROR] Statement '%s' evaluated to true!", \ |
| #STATEMENT); \ |
| BBUNIT_ASSERTION_FAILED; \ |
| } \ |
| } while (0) |
| |
| #define BBUNIT_ASSERT_TRUE(STATEMENT) \ |
| do { \ |
| if (!(STATEMENT)) { \ |
| BBUNIT_PRINTASSERTFAIL; \ |
| bb_error_msg("[ERROR] Statement '%s' evaluated to false!", \ |
| #STATEMENT); \ |
| BBUNIT_ASSERTION_FAILED; \ |
| } \ |
| } while (0) |
| |
| #define BBUNIT_ASSERT_STREQ(STR1, STR2) \ |
| do { \ |
| if (strcmp(STR1, STR2) != 0) { \ |
| BBUNIT_PRINTASSERTFAIL; \ |
| bb_error_msg("[ERROR] Strings '%s' and '%s' " \ |
| "are not the same", STR1, STR2); \ |
| BBUNIT_ASSERTION_FAILED; \ |
| } \ |
| } while (0) |
| |
| #define BBUNIT_ASSERT_STRNOTEQ(STR1, STR2) \ |
| do { \ |
| if (strcmp(STR1, STR2) == 0) { \ |
| BBUNIT_PRINTASSERTFAIL; \ |
| bb_error_msg("[ERROR] Strings '%s' and '%s' " \ |
| "are the same, but were " \ |
| "expected to differ", STR1, STR2); \ |
| BBUNIT_ASSERTION_FAILED; \ |
| } \ |
| } while (0) |
| |
| |
| POP_SAVED_FUNCTION_VISIBILITY |
| |
| #endif |