[821] | 1 | /* vi: set sw=4 ts=4: */
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| 2 | /*
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| 3 | * Busybox main internal header file
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| 4 | *
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| 5 | * Based in part on code from sash, Copyright (c) 1999 by David I. Bell
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| 6 | * Permission has been granted to redistribute this code under the GPL.
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| 7 | *
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[1765] | 8 | * Licensed under the GPL version 2, see the file LICENSE in this tarball.
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[821] | 9 | */
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| 10 | #ifndef __LIBBUSYBOX_H__
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| 11 | #define __LIBBUSYBOX_H__ 1
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| 12 |
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| 13 | #include "platform.h"
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| 14 |
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| 15 | #include <ctype.h>
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| 16 | #include <dirent.h>
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[1765] | 17 | #include <errno.h>
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[821] | 18 | #include <fcntl.h>
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| 19 | #include <inttypes.h>
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[1765] | 20 | #include <mntent.h>
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[821] | 21 | #include <netdb.h>
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[1765] | 22 | #include <setjmp.h>
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| 23 | #include <signal.h>
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[821] | 24 | #include <stdio.h>
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| 25 | #include <stdlib.h>
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| 26 | #include <stdarg.h>
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[1765] | 27 | #include <stddef.h>
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[821] | 28 | #include <string.h>
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[1765] | 29 | /* #include <strings.h> - said to be obsolete */
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| 30 | #include <sys/ioctl.h>
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| 31 | #include <sys/mman.h>
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[821] | 32 | #include <sys/socket.h>
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| 33 | #include <sys/stat.h>
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[1765] | 34 | #include <sys/statfs.h>
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[821] | 35 | #include <sys/time.h>
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| 36 | #include <sys/types.h>
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[1765] | 37 | #include <sys/wait.h>
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[821] | 38 | #include <termios.h>
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[1765] | 39 | #include <time.h>
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[821] | 40 | #include <unistd.h>
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[1765] | 41 | #include <utime.h>
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[821] | 42 |
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[1765] | 43 | #if ENABLE_SELINUX
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[821] | 44 | #include <selinux/selinux.h>
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[1765] | 45 | #include <selinux/context.h>
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[821] | 46 | #endif
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| 47 |
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[1765] | 48 | #if ENABLE_LOCALE_SUPPORT
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| 49 | #include <locale.h>
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| 50 | #else
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| 51 | #define setlocale(x,y) ((void)0)
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| 52 | #endif
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| 53 |
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[821] | 54 | #include "pwd_.h"
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| 55 | #include "grp_.h"
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[1765] | 56 | /* ifdef it out, because it may include <shadow.h> */
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| 57 | /* and we may not even _have_ <shadow.h>! */
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| 58 | #if ENABLE_FEATURE_SHADOWPASSWDS
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[821] | 59 | #include "shadow_.h"
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| 60 | #endif
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| 61 |
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| 62 | /* Try to pull in PATH_MAX */
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| 63 | #include <limits.h>
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| 64 | #include <sys/param.h>
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| 65 | #ifndef PATH_MAX
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[1765] | 66 | #define PATH_MAX 256
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[821] | 67 | #endif
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| 68 |
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[1765] | 69 | /* Tested to work correctly (IIRC :]) */
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| 70 | #define MAXINT(T) (T)( \
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| 71 | ((T)-1) > 0 \
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| 72 | ? (T)-1 \
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| 73 | : (T)~((T)1 << (sizeof(T)*8-1)) \
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| 74 | )
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| 75 |
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| 76 | #define MININT(T) (T)( \
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| 77 | ((T)-1) > 0 \
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| 78 | ? (T)0 \
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| 79 | : ((T)1 << (sizeof(T)*8-1)) \
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| 80 | )
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| 81 |
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| 82 | /* Large file support */
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| 83 | /* Note that CONFIG_LFS forces bbox to be built with all common ops
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| 84 | * (stat, lseek etc) mapped to "largefile" variants by libc.
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| 85 | * Practically it means that open() automatically has O_LARGEFILE added
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| 86 | * and all filesize/file_offset parameters and struct members are "large"
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| 87 | * (in today's world - signed 64bit). For full support of large files,
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| 88 | * we need a few helper #defines (below) and careful use of off_t
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| 89 | * instead of int/ssize_t. No lseek64(), O_LARGEFILE etc necessary */
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| 90 | #if ENABLE_LFS
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| 91 | /* CONFIG_LFS is on */
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| 92 | # if ULONG_MAX > 0xffffffff
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| 93 | /* "long" is long enough on this system */
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| 94 | # define XATOOFF(a) xatoul_range(a, 0, LONG_MAX)
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| 95 | /* usage: sz = BB_STRTOOFF(s, NULL, 10); if (errno || sz < 0) die(); */
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| 96 | # define BB_STRTOOFF bb_strtoul
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| 97 | # define STRTOOFF strtoul
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| 98 | /* usage: printf("size: %"OFF_FMT"d (%"OFF_FMT"x)\n", sz, sz); */
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| 99 | # define OFF_FMT "l"
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| 100 | # else
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| 101 | /* "long" is too short, need "long long" */
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| 102 | # define XATOOFF(a) xatoull_range(a, 0, LLONG_MAX)
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| 103 | # define BB_STRTOOFF bb_strtoull
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| 104 | # define STRTOOFF strtoull
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| 105 | # define OFF_FMT "ll"
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| 106 | # endif
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| 107 | #else
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| 108 | /* CONFIG_LFS is off */
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| 109 | # if UINT_MAX == 0xffffffff
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| 110 | /* While sizeof(off_t) == sizeof(int), off_t is typedef'ed to long anyway.
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| 111 | * gcc will throw warnings on printf("%d", off_t). Crap... */
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| 112 | # define XATOOFF(a) xatoi_u(a)
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| 113 | # define BB_STRTOOFF bb_strtou
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| 114 | # define STRTOOFF strtol
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| 115 | # define OFF_FMT "l"
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| 116 | # else
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| 117 | # define XATOOFF(a) xatoul_range(a, 0, LONG_MAX)
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| 118 | # define BB_STRTOOFF bb_strtoul
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| 119 | # define STRTOOFF strtol
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| 120 | # define OFF_FMT "l"
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| 121 | # endif
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[821] | 122 | #endif
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[1765] | 123 | /* scary. better ideas? (but do *test* them first!) */
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| 124 | #define OFF_T_MAX ((off_t)~((off_t)1 << (sizeof(off_t)*8-1)))
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[821] | 125 |
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| 126 | /* Some useful definitions */
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| 127 | #undef FALSE
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| 128 | #define FALSE ((int) 0)
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| 129 | #undef TRUE
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| 130 | #define TRUE ((int) 1)
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| 131 | #undef SKIP
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| 132 | #define SKIP ((int) 2)
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| 133 |
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| 134 | /* for mtab.c */
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| 135 | #define MTAB_GETMOUNTPT '1'
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| 136 | #define MTAB_GETDEVICE '2'
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| 137 |
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| 138 | #define BUF_SIZE 8192
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| 139 | #define EXPAND_ALLOC 1024
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| 140 |
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| 141 | /* Macros for min/max. */
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| 142 | #ifndef MIN
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| 143 | #define MIN(a,b) (((a)<(b))?(a):(b))
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| 144 | #endif
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| 145 |
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| 146 | #ifndef MAX
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| 147 | #define MAX(a,b) (((a)>(b))?(a):(b))
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| 148 | #endif
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| 149 |
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| 150 | /* buffer allocation schemes */
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[1765] | 151 | #if ENABLE_FEATURE_BUFFERS_GO_ON_STACK
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| 152 | #define RESERVE_CONFIG_BUFFER(buffer,len) char buffer[len]
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[821] | 153 | #define RESERVE_CONFIG_UBUFFER(buffer,len) unsigned char buffer[len]
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| 154 | #define RELEASE_CONFIG_BUFFER(buffer) ((void)0)
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| 155 | #else
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[1765] | 156 | #if ENABLE_FEATURE_BUFFERS_GO_IN_BSS
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[821] | 157 | #define RESERVE_CONFIG_BUFFER(buffer,len) static char buffer[len]
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| 158 | #define RESERVE_CONFIG_UBUFFER(buffer,len) static unsigned char buffer[len]
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| 159 | #define RELEASE_CONFIG_BUFFER(buffer) ((void)0)
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| 160 | #else
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[1765] | 161 | #define RESERVE_CONFIG_BUFFER(buffer,len) char *buffer = xmalloc(len)
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| 162 | #define RESERVE_CONFIG_UBUFFER(buffer,len) unsigned char *buffer = xmalloc(len)
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| 163 | #define RELEASE_CONFIG_BUFFER(buffer) free(buffer)
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[821] | 164 | #endif
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| 165 | #endif
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| 166 |
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| 167 |
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[1765] | 168 | #if defined(__GLIBC__)
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| 169 | /* glibc uses __errno_location() to get a ptr to errno */
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| 170 | /* We can just memorize it once - no multithreading in busybox :) */
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| 171 | extern int *const bb_errno;
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| 172 | #undef errno
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| 173 | #define errno (*bb_errno)
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| 174 | #endif
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[821] | 175 |
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[1765] | 176 | #if defined(__GLIBC__) && __GLIBC__ < 2
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| 177 | int vdprintf(int d, const char *format, va_list ap);
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| 178 | #endif
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| 179 | // This is declared here rather than #including <libgen.h> in order to avoid
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| 180 | // confusing the two versions of basename. See the dirname/basename man page
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| 181 | // for details.
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| 182 | char *dirname(char *path);
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| 183 | /* Include our own copy of struct sysinfo to avoid binary compatibility
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| 184 | * problems with Linux 2.4, which changed things. Grumble, grumble. */
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| 185 | struct sysinfo {
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| 186 | long uptime; /* Seconds since boot */
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| 187 | unsigned long loads[3]; /* 1, 5, and 15 minute load averages */
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| 188 | unsigned long totalram; /* Total usable main memory size */
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| 189 | unsigned long freeram; /* Available memory size */
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| 190 | unsigned long sharedram; /* Amount of shared memory */
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| 191 | unsigned long bufferram; /* Memory used by buffers */
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| 192 | unsigned long totalswap; /* Total swap space size */
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| 193 | unsigned long freeswap; /* swap space still available */
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| 194 | unsigned short procs; /* Number of current processes */
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| 195 | unsigned short pad; /* Padding needed for m68k */
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| 196 | unsigned long totalhigh; /* Total high memory size */
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| 197 | unsigned long freehigh; /* Available high memory size */
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| 198 | unsigned int mem_unit; /* Memory unit size in bytes */
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| 199 | char _f[20-2*sizeof(long)-sizeof(int)]; /* Padding: libc5 uses this.. */
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| 200 | };
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| 201 | int sysinfo(struct sysinfo* info);
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[821] | 202 |
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[1765] | 203 | unsigned long long monotonic_us(void);
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| 204 | unsigned monotonic_sec(void);
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[821] | 205 |
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[1765] | 206 | extern void chomp(char *s);
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| 207 | extern void trim(char *s);
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| 208 | extern char *skip_whitespace(const char *);
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| 209 | extern char *skip_non_whitespace(const char *);
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[821] | 210 |
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[1765] | 211 | //TODO: supply a pointer to char[11] buffer (avoid statics)?
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| 212 | extern const char *bb_mode_string(mode_t mode);
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[821] | 213 | extern int is_directory(const char *name, int followLinks, struct stat *statBuf);
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| 214 | extern int remove_file(const char *path, int flags);
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| 215 | extern int copy_file(const char *source, const char *dest, int flags);
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[1765] | 216 | enum {
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| 217 | ACTION_RECURSE = (1 << 0),
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| 218 | ACTION_FOLLOWLINKS = (1 << 1),
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| 219 | ACTION_FOLLOWLINKS_L0 = (1 << 2),
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| 220 | ACTION_DEPTHFIRST = (1 << 3),
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| 221 | /*ACTION_REVERSE = (1 << 4), - unused */
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| 222 | };
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| 223 | extern int recursive_action(const char *fileName, unsigned flags,
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| 224 | int (*fileAction) (const char *fileName, struct stat* statbuf, void* userData, int depth),
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| 225 | int (*dirAction) (const char *fileName, struct stat* statbuf, void* userData, int depth),
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| 226 | void* userData, unsigned depth);
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| 227 | extern int device_open(const char *device, int mode);
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| 228 | extern int get_console_fd(void);
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| 229 | extern char *find_block_device(const char *path);
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| 230 | /* bb_copyfd_XX print read/write errors and return -1 if they occur */
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| 231 | extern off_t bb_copyfd_eof(int fd1, int fd2);
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| 232 | extern off_t bb_copyfd_size(int fd1, int fd2, off_t size);
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| 233 | extern void bb_copyfd_exact_size(int fd1, int fd2, off_t size);
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| 234 | /* "short" copy can be detected by return value < size */
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| 235 | /* this helper yells "short read!" if param is not -1 */
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| 236 | extern void complain_copyfd_and_die(off_t sz) ATTRIBUTE_NORETURN;
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| 237 | extern char bb_process_escape_sequence(const char **ptr);
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| 238 | /* TODO: sometimes modifies its parameter, which
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| 239 | * makes it rather inconvenient at times: */
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| 240 | extern char *bb_get_last_path_component(char *path);
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[821] | 241 |
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[1765] | 242 | int ndelay_on(int fd);
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| 243 | int ndelay_off(int fd);
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| 244 | void xdup2(int, int);
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| 245 | void xmove_fd(int, int);
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[821] | 246 |
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| 247 |
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[1765] | 248 | DIR *xopendir(const char *path);
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| 249 | DIR *warn_opendir(const char *path);
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[821] | 250 |
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[1765] | 251 | /* UNUSED: char *xmalloc_realpath(const char *path); */
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| 252 | char *xmalloc_readlink(const char *path);
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| 253 | char *xmalloc_readlink_or_warn(const char *path);
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| 254 | char *xrealloc_getcwd_or_warn(char *cwd);
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[821] | 255 |
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| 256 |
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[1765] | 257 | //TODO: signal(sid, f) is the same? then why?
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| 258 | extern void sig_catch(int,void (*)(int));
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| 259 | //#define sig_ignore(s) (sig_catch((s), SIG_IGN))
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| 260 | //#define sig_uncatch(s) (sig_catch((s), SIG_DFL))
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| 261 | extern void sig_block(int);
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| 262 | extern void sig_unblock(int);
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| 263 | /* UNUSED: extern void sig_blocknone(void); */
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| 264 | extern void sig_pause(void);
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[821] | 265 |
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| 266 |
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[1765] | 267 | void xsetgid(gid_t gid);
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| 268 | void xsetuid(uid_t uid);
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| 269 | void xchdir(const char *path);
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| 270 | void xsetenv(const char *key, const char *value);
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| 271 | void xunlink(const char *pathname);
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| 272 | void xstat(const char *pathname, struct stat *buf);
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| 273 | int xopen(const char *pathname, int flags);
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| 274 | int xopen3(const char *pathname, int flags, int mode);
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| 275 | int open_or_warn(const char *pathname, int flags);
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| 276 | int open3_or_warn(const char *pathname, int flags, int mode);
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| 277 | void xpipe(int filedes[2]);
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| 278 | off_t xlseek(int fd, off_t offset, int whence);
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| 279 | off_t fdlength(int fd);
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[821] | 280 |
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[1765] | 281 | int xsocket(int domain, int type, int protocol);
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| 282 | void xbind(int sockfd, struct sockaddr *my_addr, socklen_t addrlen);
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| 283 | void xlisten(int s, int backlog);
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| 284 | void xconnect(int s, const struct sockaddr *s_addr, socklen_t addrlen);
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| 285 | ssize_t xsendto(int s, const void *buf, size_t len, const struct sockaddr *to,
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| 286 | socklen_t tolen);
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| 287 | /* SO_REUSEADDR allows a server to rebind to an address that is already
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| 288 | * "in use" by old connections to e.g. previous server instance which is
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| 289 | * killed or crashed. Without it bind will fail until all such connections
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| 290 | * time out. Linux does not allow multiple live binds on same ip:port
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| 291 | * regardless of SO_REUSEADDR (unlike some other flavors of Unix).
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| 292 | * Turn it on before you call bind(). */
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| 293 | void setsockopt_reuseaddr(int fd); /* On Linux this never fails. */
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| 294 | int setsockopt_broadcast(int fd);
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| 295 | /* NB: returns port in host byte order */
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| 296 | unsigned bb_lookup_port(const char *port, const char *protocol, unsigned default_port);
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| 297 | typedef struct len_and_sockaddr {
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| 298 | socklen_t len;
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| 299 | union {
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| 300 | struct sockaddr sa;
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| 301 | struct sockaddr_in sin;
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| 302 | #if ENABLE_FEATURE_IPV6
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| 303 | struct sockaddr_in6 sin6;
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| 304 | #endif
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| 305 | };
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| 306 | } len_and_sockaddr;
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| 307 | enum {
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| 308 | LSA_SIZEOF_SA = sizeof(
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| 309 | union {
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| 310 | struct sockaddr sa;
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| 311 | struct sockaddr_in sin;
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| 312 | #if ENABLE_FEATURE_IPV6
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| 313 | struct sockaddr_in6 sin6;
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| 314 | #endif
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| 315 | }
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| 316 | )
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| 317 | };
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| 318 | /* Create stream socket, and allocate suitable lsa.
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| 319 | * (lsa of correct size and lsa->sa.sa_family (AF_INET/AF_INET6))
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| 320 | * af == AF_UNSPEC will result in trying to create IPv6 socket,
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| 321 | * and if kernel doesn't support it, IPv4.
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| 322 | */
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| 323 | int xsocket_type(len_and_sockaddr **lsap, USE_FEATURE_IPV6(int af,) int sock_type);
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| 324 | int xsocket_stream(len_and_sockaddr **lsap);
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| 325 | /* Create server socket bound to bindaddr:port. bindaddr can be NULL,
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| 326 | * numeric IP ("N.N.N.N") or numeric IPv6 address,
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| 327 | * and can have ":PORT" suffix (for IPv6 use "[X:X:...:X]:PORT").
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| 328 | * Only if there is no suffix, port argument is used */
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| 329 | /* NB: these set SO_REUSEADDR before bind */
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| 330 | int create_and_bind_stream_or_die(const char *bindaddr, int port);
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| 331 | int create_and_bind_dgram_or_die(const char *bindaddr, int port);
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| 332 | /* Create client TCP socket connected to peer:port. Peer cannot be NULL.
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| 333 | * Peer can be numeric IP ("N.N.N.N"), numeric IPv6 address or hostname,
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| 334 | * and can have ":PORT" suffix (for IPv6 use "[X:X:...:X]:PORT").
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| 335 | * If there is no suffix, port argument is used */
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| 336 | int create_and_connect_stream_or_die(const char *peer, int port);
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| 337 | /* Connect to peer identified by lsa */
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| 338 | int xconnect_stream(const len_and_sockaddr *lsa);
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| 339 | /* Return malloc'ed len_and_sockaddr with socket address of host:port
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| 340 | * Currently will return IPv4 or IPv6 sockaddrs only
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| 341 | * (depending on host), but in theory nothing prevents e.g.
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| 342 | * UNIX socket address being returned, IPX sockaddr etc...
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| 343 | * On error does bb_error_msg and returns NULL */
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| 344 | len_and_sockaddr* host2sockaddr(const char *host, int port);
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| 345 | /* Version which dies on error */
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| 346 | len_and_sockaddr* xhost2sockaddr(const char *host, int port);
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| 347 | len_and_sockaddr* xdotted2sockaddr(const char *host, int port);
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| 348 | #if ENABLE_FEATURE_IPV6
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| 349 | /* Same, useful if you want to force family (e.g. IPv6) */
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| 350 | len_and_sockaddr* host_and_af2sockaddr(const char *host, int port, sa_family_t af);
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| 351 | len_and_sockaddr* xhost_and_af2sockaddr(const char *host, int port, sa_family_t af);
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| 352 | #else
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| 353 | /* [we evaluate af: think about "host_and_af2sockaddr(..., af++)"] */
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| 354 | #define host_and_af2sockaddr(host, port, af) ((void)(af), host2sockaddr((host), (port)))
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| 355 | #define xhost_and_af2sockaddr(host, port, af) ((void)(af), xhost2sockaddr((host), (port)))
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| 356 | #endif
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| 357 | /* Assign sin[6]_port member if the socket is an AF_INET[6] one,
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| 358 | * otherwise no-op. Useful for ftp.
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| 359 | * NB: does NOT do htons() internally, just direct assignment. */
|
---|
| 360 | void set_nport(len_and_sockaddr *lsa, unsigned port);
|
---|
| 361 | /* Retrieve sin[6]_port or return -1 for non-INET[6] lsa's */
|
---|
| 362 | int get_nport(const struct sockaddr *sa);
|
---|
| 363 | /* Reverse DNS. Returns NULL on failure. */
|
---|
| 364 | char* xmalloc_sockaddr2host(const struct sockaddr *sa);
|
---|
| 365 | /* This one doesn't append :PORTNUM */
|
---|
| 366 | char* xmalloc_sockaddr2host_noport(const struct sockaddr *sa);
|
---|
| 367 | /* This one also doesn't fall back to dotted IP (returns NULL) */
|
---|
| 368 | char* xmalloc_sockaddr2hostonly_noport(const struct sockaddr *sa);
|
---|
| 369 | /* inet_[ap]ton on steroids */
|
---|
| 370 | char* xmalloc_sockaddr2dotted(const struct sockaddr *sa);
|
---|
| 371 | char* xmalloc_sockaddr2dotted_noport(const struct sockaddr *sa);
|
---|
| 372 | // "old" (ipv4 only) API
|
---|
| 373 | // users: traceroute.c hostname.c - use _list_ of all IPs
|
---|
| 374 | struct hostent *xgethostbyname(const char *name);
|
---|
| 375 | // Also mount.c and inetd.c are using gethostbyname(),
|
---|
| 376 | // + inet_common.c has additional IPv4-only stuff
|
---|
[821] | 377 |
|
---|
| 378 |
|
---|
[1765] | 379 | void socket_want_pktinfo(int fd);
|
---|
| 380 | ssize_t send_to_from(int fd, void *buf, size_t len, int flags,
|
---|
| 381 | const struct sockaddr *from, const struct sockaddr *to,
|
---|
| 382 | socklen_t tolen);
|
---|
| 383 | ssize_t recv_from_to(int fd, void *buf, size_t len, int flags,
|
---|
| 384 | struct sockaddr *from, struct sockaddr *to,
|
---|
| 385 | socklen_t sa_size);
|
---|
[821] | 386 |
|
---|
| 387 |
|
---|
[1765] | 388 | extern char *xstrdup(const char *s);
|
---|
| 389 | extern char *xstrndup(const char *s, int n);
|
---|
| 390 | extern char *safe_strncpy(char *dst, const char *src, size_t size);
|
---|
| 391 | extern char *xasprintf(const char *format, ...) __attribute__ ((format (printf, 1, 2)));
|
---|
| 392 | // gcc-4.1.1 still isn't good enough at optimizing it
|
---|
| 393 | // (+200 bytes compared to macro)
|
---|
| 394 | //static ALWAYS_INLINE
|
---|
| 395 | //int LONE_DASH(const char *s) { return s[0] == '-' && !s[1]; }
|
---|
| 396 | //static ALWAYS_INLINE
|
---|
| 397 | //int NOT_LONE_DASH(const char *s) { return s[0] != '-' || s[1]; }
|
---|
| 398 | #define LONE_DASH(s) ((s)[0] == '-' && !(s)[1])
|
---|
| 399 | #define NOT_LONE_DASH(s) ((s)[0] != '-' || (s)[1])
|
---|
| 400 | #define LONE_CHAR(s,c) ((s)[0] == (c) && !(s)[1])
|
---|
| 401 | #define NOT_LONE_CHAR(s,c) ((s)[0] != (c) || (s)[1])
|
---|
| 402 | #define DOT_OR_DOTDOT(s) ((s)[0] == '.' && (!(s)[1] || ((s)[1] == '.' && !(s)[2])))
|
---|
| 403 |
|
---|
[821] | 404 | /* dmalloc will redefine these to it's own implementation. It is safe
|
---|
| 405 | * to have the prototypes here unconditionally. */
|
---|
[1765] | 406 | extern void *malloc_or_warn(size_t size);
|
---|
[821] | 407 | extern void *xmalloc(size_t size);
|
---|
[1765] | 408 | extern void *xzalloc(size_t size);
|
---|
[821] | 409 | extern void *xrealloc(void *old, size_t size);
|
---|
| 410 |
|
---|
[1765] | 411 | extern ssize_t safe_read(int fd, void *buf, size_t count);
|
---|
| 412 | extern ssize_t full_read(int fd, void *buf, size_t count);
|
---|
| 413 | extern void xread(int fd, void *buf, size_t count);
|
---|
| 414 | extern unsigned char xread_char(int fd);
|
---|
| 415 | // Read one line a-la fgets. Uses one read(), works only on seekable streams
|
---|
| 416 | extern char *reads(int fd, char *buf, size_t count);
|
---|
| 417 | // Read one line a-la fgets. Reads byte-by-byte.
|
---|
| 418 | // Useful when it is important to not read ahead.
|
---|
| 419 | extern char *xmalloc_reads(int fd, char *pfx);
|
---|
| 420 | extern ssize_t read_close(int fd, void *buf, size_t count);
|
---|
| 421 | extern ssize_t open_read_close(const char *filename, void *buf, size_t count);
|
---|
| 422 | extern void *xmalloc_open_read_close(const char *filename, size_t *sizep);
|
---|
[821] | 423 |
|
---|
[1765] | 424 | extern ssize_t safe_write(int fd, const void *buf, size_t count);
|
---|
| 425 | extern ssize_t full_write(int fd, const void *buf, size_t count);
|
---|
| 426 | extern void xwrite(int fd, const void *buf, size_t count);
|
---|
[821] | 427 |
|
---|
[1765] | 428 | /* Reads and prints to stdout till eof, then closes FILE. Exits on error: */
|
---|
| 429 | extern void xprint_and_close_file(FILE *file);
|
---|
| 430 | extern char *xmalloc_fgets(FILE *file);
|
---|
| 431 | /* Read up to (and including) TERMINATING_STRING: */
|
---|
| 432 | extern char *xmalloc_fgets_str(FILE *file, const char *terminating_string);
|
---|
| 433 | /* Chops off '\n' from the end, unlike fgets: */
|
---|
| 434 | extern char *xmalloc_getline(FILE *file);
|
---|
| 435 | extern char *bb_get_chunk_from_file(FILE *file, int *end);
|
---|
| 436 | extern void die_if_ferror(FILE *file, const char *msg);
|
---|
| 437 | extern void die_if_ferror_stdout(void);
|
---|
| 438 | extern void xfflush_stdout(void);
|
---|
| 439 | extern void fflush_stdout_and_exit(int retval) ATTRIBUTE_NORETURN;
|
---|
| 440 | extern int fclose_if_not_stdin(FILE *file);
|
---|
| 441 | extern FILE *xfopen(const char *filename, const char *mode);
|
---|
| 442 | /* Prints warning to stderr and returns NULL on failure: */
|
---|
| 443 | extern FILE *fopen_or_warn(const char *filename, const char *mode);
|
---|
| 444 | /* "Opens" stdin if filename is special, else just opens file: */
|
---|
| 445 | extern FILE *fopen_or_warn_stdin(const char *filename);
|
---|
[821] | 446 |
|
---|
[1765] | 447 | /* Convert each alpha char in str to lower-case */
|
---|
| 448 | extern char* str_tolower(char *str);
|
---|
[821] | 449 |
|
---|
[1765] | 450 | char *utoa(unsigned n);
|
---|
| 451 | char *itoa(int n);
|
---|
| 452 | /* Returns a pointer past the formatted number, does NOT null-terminate */
|
---|
| 453 | char *utoa_to_buf(unsigned n, char *buf, unsigned buflen);
|
---|
| 454 | char *itoa_to_buf(int n, char *buf, unsigned buflen);
|
---|
| 455 | void smart_ulltoa5(unsigned long long ul, char buf[5]);
|
---|
| 456 | //TODO: provide pointer to buf (avoid statics)?
|
---|
| 457 | const char *make_human_readable_str(unsigned long long size,
|
---|
| 458 | unsigned long block_size, unsigned long display_unit);
|
---|
| 459 | /* Put a string of hex bytes ("1b2e66fe"...), return advanced pointer */
|
---|
| 460 | char *bin2hex(char *buf, const char *cp, int count);
|
---|
[821] | 461 |
|
---|
[1765] | 462 | /* Last element is marked by mult == 0 */
|
---|
| 463 | struct suffix_mult {
|
---|
| 464 | char suffix[4];
|
---|
| 465 | unsigned mult;
|
---|
| 466 | };
|
---|
| 467 | #include "xatonum.h"
|
---|
| 468 | /* Specialized: */
|
---|
| 469 | /* Using xatoi() instead of naive atoi() is not always convenient -
|
---|
| 470 | * in many places people want *non-negative* values, but store them
|
---|
| 471 | * in signed int. Therefore we need this one:
|
---|
| 472 | * dies if input is not in [0, INT_MAX] range. Also will reject '-0' etc */
|
---|
| 473 | int xatoi_u(const char *numstr);
|
---|
| 474 | /* Useful for reading port numbers */
|
---|
| 475 | uint16_t xatou16(const char *numstr);
|
---|
[821] | 476 |
|
---|
| 477 |
|
---|
| 478 | /* These parse entries in /etc/passwd and /etc/group. This is desirable
|
---|
| 479 | * for BusyBox since we want to avoid using the glibc NSS stuff, which
|
---|
| 480 | * increases target size and is often not needed on embedded systems. */
|
---|
[1765] | 481 | long xuname2uid(const char *name);
|
---|
| 482 | long xgroup2gid(const char *name);
|
---|
| 483 | /* wrapper: allows string to contain numeric uid or gid */
|
---|
| 484 | unsigned long get_ug_id(const char *s, long (*xname2id)(const char *));
|
---|
| 485 | /* from chpst. Does not die, returns 0 on failure */
|
---|
| 486 | struct bb_uidgid_t {
|
---|
| 487 | uid_t uid;
|
---|
| 488 | gid_t gid;
|
---|
| 489 | };
|
---|
| 490 | /* always sets uid and gid */
|
---|
| 491 | int get_uidgid(struct bb_uidgid_t*, const char*, int numeric_ok);
|
---|
| 492 | /* chown-like handling of "user[:[group]" */
|
---|
| 493 | void parse_chown_usergroup_or_die(struct bb_uidgid_t *u, char *user_group);
|
---|
| 494 | /* bb_getpwuid, bb_getgrgid:
|
---|
| 495 | * bb_getXXXid(buf, bufsz, id) - copy user/group name or id
|
---|
| 496 | * as a string to buf, return user/group name or NULL
|
---|
| 497 | * bb_getXXXid(NULL, 0, id) - return user/group name or NULL
|
---|
| 498 | * bb_getXXXid(NULL, -1, id) - return user/group name or exit
|
---|
| 499 | */
|
---|
| 500 | char *bb_getpwuid(char *name, int bufsize, long uid);
|
---|
| 501 | char *bb_getgrgid(char *group, int bufsize, long gid);
|
---|
| 502 | /* versions which cache results (useful for ps, ls etc) */
|
---|
| 503 | const char* get_cached_username(uid_t uid);
|
---|
| 504 | const char* get_cached_groupname(gid_t gid);
|
---|
| 505 | void clear_username_cache(void);
|
---|
| 506 | /* internally usernames are saved in fixed-sized char[] buffers */
|
---|
| 507 | enum { USERNAME_MAX_SIZE = 16 - sizeof(int) };
|
---|
[821] | 508 |
|
---|
| 509 |
|
---|
[1765] | 510 | struct bb_applet;
|
---|
| 511 | int execable_file(const char *name);
|
---|
| 512 | char *find_execable(const char *filename);
|
---|
| 513 | int exists_execable(const char *filename);
|
---|
[821] | 514 |
|
---|
[1765] | 515 | #if ENABLE_FEATURE_PREFER_APPLETS
|
---|
| 516 | int bb_execvp(const char *file, char *const argv[]);
|
---|
| 517 | #define BB_EXECVP(prog,cmd) bb_execvp(prog,cmd)
|
---|
| 518 | #define BB_EXECLP(prog,cmd,...) \
|
---|
| 519 | execlp((find_applet_by_name(prog)) ? CONFIG_BUSYBOX_EXEC_PATH : prog, \
|
---|
| 520 | cmd, __VA_ARGS__)
|
---|
| 521 | #else
|
---|
| 522 | #define BB_EXECVP(prog,cmd) execvp(prog,cmd)
|
---|
| 523 | #define BB_EXECLP(prog,cmd,...) execlp(prog,cmd, __VA_ARGS__)
|
---|
[821] | 524 | #endif
|
---|
| 525 |
|
---|
[1765] | 526 | /* NOMMU friendy fork+exec */
|
---|
| 527 | pid_t spawn(char **argv);
|
---|
| 528 | pid_t xspawn(char **argv);
|
---|
[821] | 529 |
|
---|
[1765] | 530 | /* Unlike waitpid, waits ONLY for one process,
|
---|
| 531 | * It's safe to pass negative 'pids' from failed [v]fork -
|
---|
| 532 | * wait4pid will return -1 (and will not clobber [v]fork's errno).
|
---|
| 533 | * IOW: rc = wait4pid(spawn(argv));
|
---|
| 534 | * if (rc < 0) bb_perror_msg("%s", argv[0]);
|
---|
| 535 | * if (rc > 0) bb_error_msg("exit code: %d", rc);
|
---|
| 536 | */
|
---|
| 537 | int wait4pid(int pid);
|
---|
| 538 | int wait_pid(int *wstat, int pid);
|
---|
| 539 | int wait_nohang(int *wstat);
|
---|
| 540 | #define wait_crashed(w) ((w) & 127)
|
---|
| 541 | #define wait_exitcode(w) ((w) >> 8)
|
---|
| 542 | #define wait_stopsig(w) ((w) >> 8)
|
---|
| 543 | #define wait_stopped(w) (((w) & 127) == 127)
|
---|
| 544 | /* wait4pid(spawn(argv)) + NOFORK/NOEXEC (if configured) */
|
---|
| 545 | int spawn_and_wait(char **argv);
|
---|
| 546 | struct nofork_save_area {
|
---|
| 547 | jmp_buf die_jmp;
|
---|
| 548 | const struct bb_applet *current_applet;
|
---|
| 549 | int xfunc_error_retval;
|
---|
| 550 | uint32_t option_mask32;
|
---|
| 551 | int die_sleep;
|
---|
| 552 | smallint saved;
|
---|
[821] | 553 | };
|
---|
[1765] | 554 | void save_nofork_data(struct nofork_save_area *save);
|
---|
| 555 | void restore_nofork_data(struct nofork_save_area *save);
|
---|
| 556 | /* Does NOT check that applet is NOFORK, just blindly runs it */
|
---|
| 557 | int run_nofork_applet(const struct bb_applet *a, char **argv);
|
---|
| 558 | int run_nofork_applet_prime(struct nofork_save_area *old, const struct bb_applet *a, char **argv);
|
---|
[821] | 559 |
|
---|
[1765] | 560 | /* Helpers for daemonization.
|
---|
| 561 | *
|
---|
| 562 | * bb_daemonize(flags) = daemonize, does not compile on NOMMU
|
---|
| 563 | *
|
---|
| 564 | * bb_daemonize_or_rexec(flags, argv) = daemonizes on MMU (and ignores argv),
|
---|
| 565 | * rexec's itself on NOMMU with argv passed as command line.
|
---|
| 566 | * Thus bb_daemonize_or_rexec may cause your <applet>_main() to be re-executed
|
---|
| 567 | * from the start. (It will detect it and not reexec again second time).
|
---|
| 568 | * You have to audit carefully that you don't do something twice as a result
|
---|
| 569 | * (opening files/sockets, parsing config files etc...)!
|
---|
| 570 | *
|
---|
| 571 | * Both of the above will redirect fd 0,1,2 to /dev/null and drop ctty
|
---|
| 572 | * (will do setsid()).
|
---|
| 573 | *
|
---|
| 574 | * forkexit_or_rexec(argv) = bare-bones "fork + parent exits" on MMU,
|
---|
| 575 | * "vfork + re-exec ourself" on NOMMU. No fd redirection, no setsid().
|
---|
| 576 | * Currently used for openvt. On MMU ignores argv.
|
---|
| 577 | *
|
---|
| 578 | * Helper for network daemons in foreground mode:
|
---|
| 579 | *
|
---|
| 580 | * bb_sanitize_stdio() = make sure that fd 0,1,2 are opened by opening them
|
---|
| 581 | * to /dev/null if they are not.
|
---|
| 582 | */
|
---|
[821] | 583 | enum {
|
---|
[1765] | 584 | DAEMON_CHDIR_ROOT = 1,
|
---|
| 585 | DAEMON_DEVNULL_STDIO = 2,
|
---|
| 586 | DAEMON_CLOSE_EXTRA_FDS = 4,
|
---|
| 587 | DAEMON_ONLY_SANITIZE = 8, /* internal use */
|
---|
[821] | 588 | };
|
---|
[1765] | 589 | #if BB_MMU
|
---|
| 590 | void forkexit_or_rexec(void);
|
---|
| 591 | enum { re_execed = 0 };
|
---|
| 592 | # define forkexit_or_rexec(argv) forkexit_or_rexec()
|
---|
| 593 | # define bb_daemonize_or_rexec(flags, argv) bb_daemonize_or_rexec(flags)
|
---|
| 594 | # define bb_daemonize(flags) bb_daemonize_or_rexec(flags, bogus)
|
---|
| 595 | #else
|
---|
| 596 | void re_exec(char **argv) ATTRIBUTE_NORETURN;
|
---|
| 597 | void forkexit_or_rexec(char **argv);
|
---|
| 598 | extern bool re_execed;
|
---|
| 599 | # define fork() BUG_fork_is_unavailable_on_nommu()
|
---|
| 600 | # define daemon(a,b) BUG_daemon_is_unavailable_on_nommu()
|
---|
| 601 | # define bb_daemonize(a) BUG_bb_daemonize_is_unavailable_on_nommu()
|
---|
| 602 | #endif
|
---|
| 603 | void bb_daemonize_or_rexec(int flags, char **argv);
|
---|
| 604 | void bb_sanitize_stdio(void);
|
---|
[821] | 605 |
|
---|
[1765] | 606 |
|
---|
| 607 | extern const char *opt_complementary;
|
---|
| 608 | #if ENABLE_GETOPT_LONG
|
---|
| 609 | #define No_argument "\0"
|
---|
| 610 | #define Required_argument "\001"
|
---|
| 611 | #define Optional_argument "\002"
|
---|
| 612 | extern const char *applet_long_options;
|
---|
| 613 | #endif
|
---|
| 614 | extern uint32_t option_mask32;
|
---|
| 615 | extern uint32_t getopt32(char **argv, const char *applet_opts, ...);
|
---|
| 616 |
|
---|
| 617 |
|
---|
| 618 | typedef struct llist_t {
|
---|
| 619 | char *data;
|
---|
| 620 | struct llist_t *link;
|
---|
| 621 | } llist_t;
|
---|
| 622 | void llist_add_to(llist_t **old_head, void *data);
|
---|
| 623 | void llist_add_to_end(llist_t **list_head, void *data);
|
---|
| 624 | void *llist_pop(llist_t **elm);
|
---|
| 625 | void llist_unlink(llist_t **head, llist_t *elm);
|
---|
| 626 | void llist_free(llist_t *elm, void (*freeit)(void *data));
|
---|
| 627 | llist_t *llist_rev(llist_t *list);
|
---|
| 628 | /* BTW, surprisingly, changing API to
|
---|
| 629 | * llist_t *llist_add_to(llist_t *old_head, void *data)
|
---|
| 630 | * etc does not result in smaller code... */
|
---|
| 631 |
|
---|
| 632 | /* start_stop_daemon and udhcpc are special - they want
|
---|
| 633 | * to create pidfiles regardless of FEATURE_PIDFILE */
|
---|
| 634 | #if ENABLE_FEATURE_PIDFILE || defined(WANT_PIDFILE)
|
---|
| 635 | /* True only if we created pidfile which is *file*, not /dev/null etc */
|
---|
| 636 | extern smallint wrote_pidfile;
|
---|
| 637 | void write_pidfile(const char *path);
|
---|
| 638 | #define remove_pidfile(path) do { if (wrote_pidfile) unlink(path); } while (0)
|
---|
| 639 | #else
|
---|
| 640 | enum { wrote_pidfile = 0 };
|
---|
| 641 | #define write_pidfile(path) ((void)0)
|
---|
| 642 | #define remove_pidfile(path) ((void)0)
|
---|
| 643 | #endif
|
---|
| 644 |
|
---|
| 645 | enum {
|
---|
| 646 | LOGMODE_NONE = 0,
|
---|
| 647 | LOGMODE_STDIO = (1 << 0),
|
---|
| 648 | LOGMODE_SYSLOG = (1 << 1) * ENABLE_FEATURE_SYSLOG,
|
---|
| 649 | LOGMODE_BOTH = LOGMODE_SYSLOG + LOGMODE_STDIO,
|
---|
| 650 | };
|
---|
| 651 | extern const char *msg_eol;
|
---|
| 652 | extern smallint logmode;
|
---|
| 653 | extern int die_sleep;
|
---|
| 654 | extern int xfunc_error_retval;
|
---|
| 655 | extern jmp_buf die_jmp;
|
---|
| 656 | extern void xfunc_die(void) ATTRIBUTE_NORETURN;
|
---|
| 657 | extern void bb_show_usage(void) ATTRIBUTE_NORETURN ATTRIBUTE_EXTERNALLY_VISIBLE;
|
---|
| 658 | extern void bb_error_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2)));
|
---|
| 659 | extern void bb_error_msg_and_die(const char *s, ...) __attribute__ ((noreturn, format (printf, 1, 2)));
|
---|
| 660 | extern void bb_perror_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2)));
|
---|
| 661 | extern void bb_perror_msg_and_die(const char *s, ...) __attribute__ ((noreturn, format (printf, 1, 2)));
|
---|
| 662 | extern void bb_herror_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2)));
|
---|
| 663 | extern void bb_herror_msg_and_die(const char *s, ...) __attribute__ ((noreturn, format (printf, 1, 2)));
|
---|
| 664 | extern void bb_perror_nomsg_and_die(void) ATTRIBUTE_NORETURN;
|
---|
| 665 | extern void bb_perror_nomsg(void);
|
---|
| 666 | extern void bb_info_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2)));
|
---|
| 667 | extern void bb_verror_msg(const char *s, va_list p, const char *strerr);
|
---|
| 668 |
|
---|
| 669 |
|
---|
| 670 | /* applets which are useful from another applets */
|
---|
| 671 | int bb_cat(char** argv);
|
---|
| 672 | int bb_echo(char** argv);
|
---|
| 673 | int test_main(int argc, char** argv);
|
---|
| 674 | int kill_main(int argc, char **argv);
|
---|
| 675 | #if ENABLE_ROUTE
|
---|
| 676 | void bb_displayroutes(int noresolve, int netstatfmt);
|
---|
| 677 | #endif
|
---|
| 678 | int chown_main(int argc, char **argv);
|
---|
| 679 | #if ENABLE_GUNZIP
|
---|
| 680 | int gunzip_main(int argc, char **argv);
|
---|
| 681 | #endif
|
---|
| 682 | int bbunpack(char **argv,
|
---|
| 683 | char* (*make_new_name)(char *filename),
|
---|
| 684 | USE_DESKTOP(long long) int (*unpacker)(void)
|
---|
| 685 | );
|
---|
| 686 |
|
---|
| 687 |
|
---|
| 688 | /* Networking */
|
---|
| 689 | int create_icmp_socket(void);
|
---|
| 690 | int create_icmp6_socket(void);
|
---|
| 691 | /* interface.c */
|
---|
| 692 | /* This structure defines protocol families and their handlers. */
|
---|
| 693 | struct aftype {
|
---|
| 694 | const char *name;
|
---|
| 695 | const char *title;
|
---|
| 696 | int af;
|
---|
| 697 | int alen;
|
---|
| 698 | char *(*print) (unsigned char *);
|
---|
| 699 | const char *(*sprint) (struct sockaddr *, int numeric);
|
---|
| 700 | int (*input) (/*int type,*/ const char *bufp, struct sockaddr *);
|
---|
| 701 | void (*herror) (char *text);
|
---|
| 702 | int (*rprint) (int options);
|
---|
| 703 | int (*rinput) (int typ, int ext, char **argv);
|
---|
| 704 |
|
---|
| 705 | /* may modify src */
|
---|
| 706 | int (*getmask) (char *src, struct sockaddr * mask, char *name);
|
---|
| 707 | };
|
---|
| 708 | /* This structure defines hardware protocols and their handlers. */
|
---|
| 709 | struct hwtype {
|
---|
| 710 | const char *name;
|
---|
| 711 | const char *title;
|
---|
| 712 | int type;
|
---|
| 713 | int alen;
|
---|
| 714 | char *(*print) (unsigned char *);
|
---|
| 715 | int (*input) (const char *, struct sockaddr *);
|
---|
| 716 | int (*activate) (int fd);
|
---|
| 717 | int suppress_null_addr;
|
---|
| 718 | };
|
---|
| 719 | extern smallint interface_opt_a;
|
---|
| 720 | int display_interfaces(char *ifname);
|
---|
| 721 | const struct aftype *get_aftype(const char *name);
|
---|
| 722 | const struct hwtype *get_hwtype(const char *name);
|
---|
| 723 | const struct hwtype *get_hwntype(int type);
|
---|
| 724 |
|
---|
| 725 |
|
---|
| 726 | #ifndef BUILD_INDIVIDUAL
|
---|
| 727 | extern const struct bb_applet *find_applet_by_name(const char *name);
|
---|
| 728 | /* Returns only if applet is not found. */
|
---|
| 729 | extern void run_applet_and_exit(const char *name, char **argv);
|
---|
| 730 | extern void run_current_applet_and_exit(char **argv) ATTRIBUTE_NORETURN;
|
---|
| 731 | #endif
|
---|
| 732 |
|
---|
| 733 | extern int match_fstype(const struct mntent *mt, const char *fstypes);
|
---|
| 734 | extern struct mntent *find_mount_point(const char *name, const char *table);
|
---|
| 735 | extern void erase_mtab(const char * name);
|
---|
| 736 | extern unsigned int tty_baud_to_value(speed_t speed);
|
---|
| 737 | extern speed_t tty_value_to_baud(unsigned int value);
|
---|
| 738 | extern void bb_warn_ignoring_args(int n);
|
---|
| 739 |
|
---|
| 740 | extern int get_linux_version_code(void);
|
---|
| 741 |
|
---|
| 742 | extern char *query_loop(const char *device);
|
---|
| 743 | extern int del_loop(const char *device);
|
---|
| 744 | /* If *devname is not NULL, use that name, otherwise try to find free one,
|
---|
| 745 | * malloc and return it in *devname.
|
---|
| 746 | * return value: 1: read-only loopdev was setup, 0: rw, < 0: error */
|
---|
| 747 | extern int set_loop(char **devname, const char *file, unsigned long long offset);
|
---|
| 748 |
|
---|
| 749 |
|
---|
| 750 | //TODO: pass buf pointer or return allocated buf (avoid statics)?
|
---|
| 751 | char *bb_askpass(int timeout, const char * prompt);
|
---|
[821] | 752 | int bb_ask_confirmation(void);
|
---|
| 753 | int klogctl(int type, char * b, int len);
|
---|
| 754 |
|
---|
[1765] | 755 | extern int bb_parse_mode(const char* s, mode_t* theMode);
|
---|
| 756 |
|
---|
[821] | 757 | char *concat_path_file(const char *path, const char *filename);
|
---|
| 758 | char *concat_subpath_file(const char *path, const char *filename);
|
---|
[1765] | 759 | const char *bb_basename(const char *name);
|
---|
| 760 | /* NB: can violate const-ness (similarly to strchr) */
|
---|
[821] | 761 | char *last_char_is(const char *s, int c);
|
---|
| 762 |
|
---|
| 763 |
|
---|
[1765] | 764 | USE_DESKTOP(long long) int uncompress(int fd_in, int fd_out);
|
---|
| 765 | int inflate(int in, int out);
|
---|
[821] | 766 |
|
---|
| 767 |
|
---|
[1765] | 768 | int bb_make_directory(char *path, long mode, int flags);
|
---|
[821] | 769 |
|
---|
[1765] | 770 | int get_signum(const char *name);
|
---|
| 771 | const char *get_signame(int number);
|
---|
[821] | 772 |
|
---|
| 773 | char *bb_simplify_path(const char *path);
|
---|
| 774 |
|
---|
[1765] | 775 | #define FAIL_DELAY 3
|
---|
| 776 | extern void bb_do_delay(int seconds);
|
---|
| 777 | extern void change_identity(const struct passwd *pw);
|
---|
| 778 | extern const char *change_identity_e2str(const struct passwd *pw);
|
---|
[1772] | 779 | extern void run_shell(const char *shell, int loginshell, const char *command, const char **additional_args) ATTRIBUTE_NORETURN;
|
---|
[1765] | 780 | #if ENABLE_SELINUX
|
---|
| 781 | extern void renew_current_security_context(void);
|
---|
| 782 | extern void set_current_security_context(security_context_t sid);
|
---|
| 783 | extern context_t set_security_context_component(security_context_t cur_context,
|
---|
| 784 | char *user, char *role, char *type, char *range);
|
---|
| 785 | extern void setfscreatecon_or_die(security_context_t scontext);
|
---|
| 786 | #endif
|
---|
| 787 | extern void selinux_or_die(void);
|
---|
| 788 | extern int restricted_shell(const char *shell);
|
---|
| 789 | extern void setup_environment(const char *shell, int loginshell, int changeenv, const struct passwd *pw);
|
---|
| 790 | extern int correct_password(const struct passwd *pw);
|
---|
| 791 | /* Returns a ptr to static storage */
|
---|
| 792 | extern char *pw_encrypt(const char *clear, const char *salt);
|
---|
| 793 | extern int obscure(const char *old, const char *newval, const struct passwd *pwdp);
|
---|
| 794 | extern int index_in_str_array(const char *const string_array[], const char *key);
|
---|
| 795 | extern int index_in_strings(const char *strings, const char *key);
|
---|
| 796 | extern int index_in_substr_array(const char *const string_array[], const char *key);
|
---|
| 797 | extern int index_in_substrings(const char *strings, const char *key);
|
---|
| 798 | extern void print_login_issue(const char *issue_file, const char *tty);
|
---|
| 799 | extern void print_login_prompt(void);
|
---|
| 800 |
|
---|
| 801 | /* rnd is additional random input. New one is returned.
|
---|
| 802 | * Useful if you call crypt_make_salt many times in a row:
|
---|
| 803 | * rnd = crypt_make_salt(buf1, 4, 0);
|
---|
| 804 | * rnd = crypt_make_salt(buf2, 4, rnd);
|
---|
| 805 | * rnd = crypt_make_salt(buf3, 4, rnd);
|
---|
| 806 | * (otherwise we risk having same salt generated)
|
---|
| 807 | */
|
---|
| 808 | extern int crypt_make_salt(char *p, int cnt, int rnd);
|
---|
| 809 |
|
---|
| 810 | /* Returns number of lines changed, or -1 on error */
|
---|
| 811 | extern int update_passwd(const char *filename, const char *username,
|
---|
| 812 | const char *new_pw);
|
---|
| 813 |
|
---|
| 814 | /* NB: typically you want to pass fd 0, not 1. Think 'applet | grep something' */
|
---|
| 815 | int get_terminal_width_height(int fd, int *width, int *height);
|
---|
| 816 |
|
---|
| 817 | int ioctl_or_perror(int fd, int request, void *argp, const char *fmt,...) __attribute__ ((format (printf, 4, 5)));
|
---|
| 818 | void ioctl_or_perror_and_die(int fd, int request, void *argp, const char *fmt,...) __attribute__ ((format (printf, 4, 5)));
|
---|
| 819 | #if ENABLE_IOCTL_HEX2STR_ERROR
|
---|
| 820 | int bb_ioctl_or_warn(int fd, int request, void *argp, const char *ioctl_name);
|
---|
| 821 | void bb_xioctl(int fd, int request, void *argp, const char *ioctl_name);
|
---|
| 822 | #define ioctl_or_warn(fd,request,argp) bb_ioctl_or_warn(fd,request,argp,#request)
|
---|
| 823 | #define xioctl(fd,request,argp) bb_xioctl(fd,request,argp,#request)
|
---|
| 824 | #else
|
---|
| 825 | int bb_ioctl_or_warn(int fd, int request, void *argp);
|
---|
| 826 | void bb_xioctl(int fd, int request, void *argp);
|
---|
| 827 | #define ioctl_or_warn(fd,request,argp) bb_ioctl_or_warn(fd,request,argp)
|
---|
| 828 | #define xioctl(fd,request,argp) bb_xioctl(fd,request,argp)
|
---|
| 829 | #endif
|
---|
| 830 |
|
---|
| 831 | char *is_in_ino_dev_hashtable(const struct stat *statbuf);
|
---|
| 832 | void add_to_ino_dev_hashtable(const struct stat *statbuf, const char *name);
|
---|
| 833 | void reset_ino_dev_hashtable(void);
|
---|
| 834 | #ifdef __GLIBC__
|
---|
| 835 | /* At least glibc has horrendously large inline for this, so wrap it */
|
---|
| 836 | unsigned long long bb_makedev(unsigned int major, unsigned int minor);
|
---|
| 837 | #undef makedev
|
---|
| 838 | #define makedev(a,b) bb_makedev(a,b)
|
---|
| 839 | #endif
|
---|
| 840 |
|
---|
| 841 |
|
---|
| 842 | #if ENABLE_FEATURE_EDITING
|
---|
| 843 | /* It's NOT just ENABLEd or disabled. It's a number: */
|
---|
| 844 | #ifdef CONFIG_FEATURE_EDITING_HISTORY
|
---|
| 845 | #define MAX_HISTORY (CONFIG_FEATURE_EDITING_HISTORY + 0)
|
---|
| 846 | #else
|
---|
| 847 | #define MAX_HISTORY 0
|
---|
| 848 | #endif
|
---|
| 849 | typedef struct line_input_t {
|
---|
| 850 | int flags;
|
---|
| 851 | const char *path_lookup;
|
---|
| 852 | #if MAX_HISTORY
|
---|
| 853 | int cnt_history;
|
---|
| 854 | int cur_history;
|
---|
| 855 | USE_FEATURE_EDITING_SAVEHISTORY(const char *hist_file;)
|
---|
| 856 | char *history[MAX_HISTORY + 1];
|
---|
| 857 | #endif
|
---|
| 858 | } line_input_t;
|
---|
| 859 | enum {
|
---|
| 860 | DO_HISTORY = 1 * (MAX_HISTORY > 0),
|
---|
| 861 | SAVE_HISTORY = 2 * (MAX_HISTORY > 0) * ENABLE_FEATURE_EDITING_SAVEHISTORY,
|
---|
| 862 | TAB_COMPLETION = 4 * ENABLE_FEATURE_TAB_COMPLETION,
|
---|
| 863 | USERNAME_COMPLETION = 8 * ENABLE_FEATURE_USERNAME_COMPLETION,
|
---|
| 864 | VI_MODE = 0x10 * ENABLE_FEATURE_EDITING_VI,
|
---|
| 865 | WITH_PATH_LOOKUP = 0x20,
|
---|
| 866 | FOR_SHELL = DO_HISTORY | SAVE_HISTORY | TAB_COMPLETION | USERNAME_COMPLETION,
|
---|
| 867 | };
|
---|
| 868 | line_input_t *new_line_input_t(int flags);
|
---|
| 869 | int read_line_input(const char* prompt, char* command, int maxsize, line_input_t *state);
|
---|
| 870 | #else
|
---|
| 871 | int read_line_input(const char* prompt, char* command, int maxsize);
|
---|
| 872 | #define read_line_input(prompt, command, maxsize, state) \
|
---|
| 873 | read_line_input(prompt, command, maxsize)
|
---|
| 874 | #endif
|
---|
| 875 |
|
---|
| 876 |
|
---|
| 877 | #ifndef COMM_LEN
|
---|
| 878 | #ifdef TASK_COMM_LEN
|
---|
| 879 | enum { COMM_LEN = TASK_COMM_LEN };
|
---|
| 880 | #else
|
---|
| 881 | /* synchronize with sizeof(task_struct.comm) in /usr/include/linux/sched.h */
|
---|
| 882 | enum { COMM_LEN = 16 };
|
---|
| 883 | #endif
|
---|
| 884 | #endif
|
---|
| 885 | typedef struct {
|
---|
| 886 | DIR *dir;
|
---|
| 887 | /* Fields are set to 0/NULL if failed to determine (or not requested) */
|
---|
| 888 | /*char *cmd;*/
|
---|
| 889 | char *argv0;
|
---|
| 890 | /*char *exe;*/
|
---|
| 891 | USE_SELINUX(char *context;)
|
---|
| 892 | /* Everything below must contain no ptrs to malloc'ed data:
|
---|
| 893 | * it is memset(0) for each process in procps_scan() */
|
---|
| 894 | unsigned vsz, rss; /* we round it to kbytes */
|
---|
| 895 | unsigned long stime, utime;
|
---|
| 896 | unsigned pid;
|
---|
| 897 | unsigned ppid;
|
---|
| 898 | unsigned pgid;
|
---|
| 899 | unsigned sid;
|
---|
| 900 | unsigned uid;
|
---|
| 901 | unsigned gid;
|
---|
| 902 | unsigned tty_major,tty_minor;
|
---|
| 903 | char state[4];
|
---|
| 904 | /* basename of executable in exec(2), read from /proc/N/stat
|
---|
| 905 | * (if executable is symlink or script, it is NOT replaced
|
---|
| 906 | * by link target or interpreter name) */
|
---|
| 907 | char comm[COMM_LEN];
|
---|
| 908 | /* user/group? - use passwd/group parsing functions */
|
---|
| 909 | } procps_status_t;
|
---|
| 910 | enum {
|
---|
| 911 | PSSCAN_PID = 1 << 0,
|
---|
| 912 | PSSCAN_PPID = 1 << 1,
|
---|
| 913 | PSSCAN_PGID = 1 << 2,
|
---|
| 914 | PSSCAN_SID = 1 << 3,
|
---|
| 915 | PSSCAN_UIDGID = 1 << 4,
|
---|
| 916 | PSSCAN_COMM = 1 << 5,
|
---|
| 917 | /* PSSCAN_CMD = 1 << 6, - use read_cmdline instead */
|
---|
| 918 | PSSCAN_ARGV0 = 1 << 7,
|
---|
| 919 | /* PSSCAN_EXE = 1 << 8, - not implemented */
|
---|
| 920 | PSSCAN_STATE = 1 << 9,
|
---|
| 921 | PSSCAN_VSZ = 1 << 10,
|
---|
| 922 | PSSCAN_RSS = 1 << 11,
|
---|
| 923 | PSSCAN_STIME = 1 << 12,
|
---|
| 924 | PSSCAN_UTIME = 1 << 13,
|
---|
| 925 | PSSCAN_TTY = 1 << 14,
|
---|
| 926 | USE_SELINUX(PSSCAN_CONTEXT = 1 << 15,)
|
---|
| 927 | /* These are all retrieved from proc/NN/stat in one go: */
|
---|
| 928 | PSSCAN_STAT = PSSCAN_PPID | PSSCAN_PGID | PSSCAN_SID
|
---|
| 929 | | PSSCAN_COMM | PSSCAN_STATE
|
---|
| 930 | | PSSCAN_VSZ | PSSCAN_RSS
|
---|
| 931 | | PSSCAN_STIME | PSSCAN_UTIME
|
---|
| 932 | | PSSCAN_TTY,
|
---|
| 933 | };
|
---|
| 934 | procps_status_t* alloc_procps_scan(int flags);
|
---|
| 935 | void free_procps_scan(procps_status_t* sp);
|
---|
| 936 | procps_status_t* procps_scan(procps_status_t* sp, int flags);
|
---|
| 937 | /* Format cmdline (up to col chars) into char buf[col+1] */
|
---|
| 938 | /* Puts [comm] if cmdline is empty (-> process is a kernel thread) */
|
---|
| 939 | void read_cmdline(char *buf, int col, unsigned pid, const char *comm);
|
---|
| 940 | pid_t *find_pid_by_name(const char* procName);
|
---|
| 941 | pid_t *pidlist_reverse(pid_t *pidList);
|
---|
| 942 |
|
---|
| 943 |
|
---|
| 944 | extern const char bb_uuenc_tbl_base64[];
|
---|
| 945 | extern const char bb_uuenc_tbl_std[];
|
---|
| 946 | void bb_uuencode(char *store, const void *s, int length, const char *tbl);
|
---|
| 947 |
|
---|
| 948 | typedef struct sha1_ctx_t {
|
---|
| 949 | uint32_t count[2];
|
---|
| 950 | uint32_t hash[5];
|
---|
| 951 | uint32_t wbuf[16];
|
---|
| 952 | } sha1_ctx_t;
|
---|
| 953 | void sha1_begin(sha1_ctx_t *ctx);
|
---|
| 954 | void sha1_hash(const void *data, size_t length, sha1_ctx_t *ctx);
|
---|
| 955 | void *sha1_end(void *resbuf, sha1_ctx_t *ctx);
|
---|
| 956 |
|
---|
| 957 | typedef struct md5_ctx_t {
|
---|
| 958 | uint32_t A;
|
---|
| 959 | uint32_t B;
|
---|
| 960 | uint32_t C;
|
---|
| 961 | uint32_t D;
|
---|
| 962 | uint64_t total;
|
---|
| 963 | uint32_t buflen;
|
---|
| 964 | char buffer[128];
|
---|
| 965 | } md5_ctx_t;
|
---|
| 966 | void md5_begin(md5_ctx_t *ctx);
|
---|
| 967 | void md5_hash(const void *data, size_t length, md5_ctx_t *ctx);
|
---|
| 968 | void *md5_end(void *resbuf, md5_ctx_t *ctx);
|
---|
| 969 |
|
---|
| 970 | uint32_t *crc32_filltable(uint32_t *tbl256, int endian);
|
---|
| 971 |
|
---|
| 972 |
|
---|
| 973 | enum { /* DO NOT CHANGE THESE VALUES! cp.c, mv.c, install.c depend on them. */
|
---|
[821] | 974 | FILEUTILS_PRESERVE_STATUS = 1,
|
---|
| 975 | FILEUTILS_DEREFERENCE = 2,
|
---|
| 976 | FILEUTILS_RECUR = 4,
|
---|
| 977 | FILEUTILS_FORCE = 8,
|
---|
[1765] | 978 | FILEUTILS_INTERACTIVE = 0x10,
|
---|
| 979 | FILEUTILS_MAKE_HARDLINK = 0x20,
|
---|
| 980 | FILEUTILS_MAKE_SOFTLINK = 0x40,
|
---|
| 981 | #if ENABLE_SELINUX
|
---|
| 982 | FILEUTILS_PRESERVE_SECURITY_CONTEXT = 0x80,
|
---|
| 983 | FILEUTILS_SET_SECURITY_CONTEXT = 0x100
|
---|
| 984 | #endif
|
---|
[821] | 985 | };
|
---|
| 986 |
|
---|
[1765] | 987 | #define FILEUTILS_CP_OPTSTR "pdRfils" USE_SELINUX("c")
|
---|
| 988 | extern const struct bb_applet *current_applet;
|
---|
| 989 | extern const char *applet_name;
|
---|
| 990 | /* "BusyBox vN.N.N (timestamp or extra_vestion)" */
|
---|
| 991 | extern const char bb_banner[];
|
---|
| 992 | extern const char bb_msg_memory_exhausted[];
|
---|
| 993 | extern const char bb_msg_invalid_date[];
|
---|
| 994 | extern const char bb_msg_read_error[];
|
---|
| 995 | extern const char bb_msg_write_error[];
|
---|
| 996 | extern const char bb_msg_unknown[];
|
---|
| 997 | extern const char bb_msg_can_not_create_raw_socket[];
|
---|
| 998 | extern const char bb_msg_perm_denied_are_you_root[];
|
---|
| 999 | extern const char bb_msg_requires_arg[];
|
---|
| 1000 | extern const char bb_msg_invalid_arg[];
|
---|
| 1001 | extern const char bb_msg_standard_input[];
|
---|
| 1002 | extern const char bb_msg_standard_output[];
|
---|
[821] | 1003 |
|
---|
[1765] | 1004 | extern const char bb_str_default[];
|
---|
| 1005 | /* NB: (bb_hexdigits_upcase[i] | 0x20) -> lowercase hex digit */
|
---|
| 1006 | extern const char bb_hexdigits_upcase[];
|
---|
[821] | 1007 |
|
---|
[1765] | 1008 | extern const char bb_path_mtab_file[];
|
---|
| 1009 | extern const char bb_path_passwd_file[];
|
---|
| 1010 | extern const char bb_path_shadow_file[];
|
---|
| 1011 | extern const char bb_path_gshadow_file[];
|
---|
| 1012 | extern const char bb_path_group_file[];
|
---|
| 1013 | extern const char bb_path_motd_file[];
|
---|
| 1014 | extern const char bb_path_wtmp_file[];
|
---|
| 1015 | extern const char bb_dev_null[];
|
---|
| 1016 | extern const char bb_busybox_exec_path[];
|
---|
| 1017 | /* util-linux manpage says /sbin:/bin:/usr/sbin:/usr/bin,
|
---|
| 1018 | * but I want to save a few bytes here */
|
---|
| 1019 | extern const char bb_PATH_root_path[]; /* "PATH=/sbin:/usr/sbin:/bin:/usr/bin" */
|
---|
| 1020 | #define bb_default_root_path (bb_PATH_root_path + sizeof("PATH"))
|
---|
| 1021 | #define bb_default_path (bb_PATH_root_path + sizeof("PATH=/sbin:/usr/sbin"))
|
---|
[821] | 1022 |
|
---|
[1765] | 1023 | extern const int const_int_0;
|
---|
| 1024 | extern const int const_int_1;
|
---|
| 1025 |
|
---|
| 1026 |
|
---|
[821] | 1027 | #ifndef BUFSIZ
|
---|
| 1028 | #define BUFSIZ 4096
|
---|
| 1029 | #endif
|
---|
[1765] | 1030 | /* Providing hard guarantee on minimum size (think of BUFSIZ == 128) */
|
---|
| 1031 | enum { COMMON_BUFSIZE = (BUFSIZ >= 256*sizeof(void*) ? BUFSIZ+1 : 256*sizeof(void*)) };
|
---|
| 1032 | extern char bb_common_bufsiz1[COMMON_BUFSIZE];
|
---|
| 1033 | /* This struct is deliberately not defined. */
|
---|
| 1034 | /* See docs/keep_data_small.txt */
|
---|
| 1035 | struct globals;
|
---|
| 1036 | /* '*const' ptr makes gcc optimize code much better.
|
---|
| 1037 | * Magic prevents ptr_to_globals from going into rodata.
|
---|
| 1038 | * If you want to assign a value, use PTR_TO_GLOBALS = xxx */
|
---|
| 1039 | extern struct globals *const ptr_to_globals;
|
---|
| 1040 | #define PTR_TO_GLOBALS (*(struct globals**)&ptr_to_globals)
|
---|
[821] | 1041 |
|
---|
[1765] | 1042 |
|
---|
| 1043 | /* You can change LIBBB_DEFAULT_LOGIN_SHELL, but don't use it,
|
---|
| 1044 | * use bb_default_login_shell and following defines.
|
---|
| 1045 | * If you change LIBBB_DEFAULT_LOGIN_SHELL,
|
---|
| 1046 | * don't forget to change increment constant. */
|
---|
[821] | 1047 | #define LIBBB_DEFAULT_LOGIN_SHELL "-/bin/sh"
|
---|
[1765] | 1048 | extern const char bb_default_login_shell[];
|
---|
[821] | 1049 | /* "/bin/sh" */
|
---|
| 1050 | #define DEFAULT_SHELL (bb_default_login_shell+1)
|
---|
| 1051 | /* "sh" */
|
---|
| 1052 | #define DEFAULT_SHELL_SHORT_NAME (bb_default_login_shell+6)
|
---|
| 1053 |
|
---|
| 1054 |
|
---|
[1765] | 1055 | #if ENABLE_FEATURE_DEVFS
|
---|
[821] | 1056 | # define CURRENT_VC "/dev/vc/0"
|
---|
| 1057 | # define VC_1 "/dev/vc/1"
|
---|
| 1058 | # define VC_2 "/dev/vc/2"
|
---|
| 1059 | # define VC_3 "/dev/vc/3"
|
---|
| 1060 | # define VC_4 "/dev/vc/4"
|
---|
| 1061 | # define VC_5 "/dev/vc/5"
|
---|
| 1062 | #if defined(__sh__) || defined(__H8300H__) || defined(__H8300S__)
|
---|
| 1063 | /* Yes, this sucks, but both SH (including sh64) and H8 have a SCI(F) for their
|
---|
| 1064 | respective serial ports .. as such, we can't use the common device paths for
|
---|
| 1065 | these. -- PFM */
|
---|
| 1066 | # define SC_0 "/dev/ttsc/0"
|
---|
| 1067 | # define SC_1 "/dev/ttsc/1"
|
---|
| 1068 | # define SC_FORMAT "/dev/ttsc/%d"
|
---|
| 1069 | #else
|
---|
| 1070 | # define SC_0 "/dev/tts/0"
|
---|
| 1071 | # define SC_1 "/dev/tts/1"
|
---|
| 1072 | # define SC_FORMAT "/dev/tts/%d"
|
---|
| 1073 | #endif
|
---|
| 1074 | # define VC_FORMAT "/dev/vc/%d"
|
---|
| 1075 | # define LOOP_FORMAT "/dev/loop/%d"
|
---|
[1765] | 1076 | # define LOOP_NAMESIZE (sizeof("/dev/loop/") + sizeof(int)*3 + 1)
|
---|
| 1077 | # define LOOP_NAME "/dev/loop/"
|
---|
[821] | 1078 | # define FB_0 "/dev/fb/0"
|
---|
| 1079 | #else
|
---|
| 1080 | # define CURRENT_VC "/dev/tty0"
|
---|
| 1081 | # define VC_1 "/dev/tty1"
|
---|
| 1082 | # define VC_2 "/dev/tty2"
|
---|
| 1083 | # define VC_3 "/dev/tty3"
|
---|
| 1084 | # define VC_4 "/dev/tty4"
|
---|
| 1085 | # define VC_5 "/dev/tty5"
|
---|
| 1086 | #if defined(__sh__) || defined(__H8300H__) || defined(__H8300S__)
|
---|
| 1087 | # define SC_0 "/dev/ttySC0"
|
---|
| 1088 | # define SC_1 "/dev/ttySC1"
|
---|
| 1089 | # define SC_FORMAT "/dev/ttySC%d"
|
---|
| 1090 | #else
|
---|
| 1091 | # define SC_0 "/dev/ttyS0"
|
---|
| 1092 | # define SC_1 "/dev/ttyS1"
|
---|
| 1093 | # define SC_FORMAT "/dev/ttyS%d"
|
---|
| 1094 | #endif
|
---|
| 1095 | # define VC_FORMAT "/dev/tty%d"
|
---|
| 1096 | # define LOOP_FORMAT "/dev/loop%d"
|
---|
[1765] | 1097 | # define LOOP_NAMESIZE (sizeof("/dev/loop") + sizeof(int)*3 + 1)
|
---|
| 1098 | # define LOOP_NAME "/dev/loop"
|
---|
[821] | 1099 | # define FB_0 "/dev/fb0"
|
---|
| 1100 | #endif
|
---|
| 1101 |
|
---|
| 1102 | /* The following devices are the same on devfs and non-devfs systems. */
|
---|
| 1103 | #define CURRENT_TTY "/dev/tty"
|
---|
[1765] | 1104 | #define DEV_CONSOLE "/dev/console"
|
---|
[821] | 1105 |
|
---|
| 1106 |
|
---|
[1765] | 1107 | #ifndef RB_POWER_OFF
|
---|
| 1108 | /* Stop system and switch power off if possible. */
|
---|
| 1109 | #define RB_POWER_OFF 0x4321fedc
|
---|
[821] | 1110 | #endif
|
---|
| 1111 |
|
---|
[1765] | 1112 | /* Make sure we call functions instead of macros. */
|
---|
| 1113 | #undef isalnum
|
---|
| 1114 | #undef isalpha
|
---|
| 1115 | #undef isascii
|
---|
| 1116 | #undef isblank
|
---|
| 1117 | #undef iscntrl
|
---|
| 1118 | #undef isgraph
|
---|
| 1119 | #undef islower
|
---|
| 1120 | #undef isprint
|
---|
| 1121 | #undef ispunct
|
---|
| 1122 | #undef isspace
|
---|
| 1123 | #undef isupper
|
---|
| 1124 | #undef isxdigit
|
---|
[821] | 1125 |
|
---|
[1765] | 1126 | /* This one is more efficient - we save ~400 bytes */
|
---|
| 1127 | #undef isdigit
|
---|
| 1128 | #define isdigit(a) ((unsigned)((a) - '0') <= 9)
|
---|
[821] | 1129 |
|
---|
| 1130 |
|
---|
[1765] | 1131 | #ifdef DMALLOC
|
---|
| 1132 | #include <dmalloc.h>
|
---|
[821] | 1133 | #endif
|
---|
| 1134 |
|
---|
| 1135 |
|
---|
[1765] | 1136 | #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
|
---|
[821] | 1137 |
|
---|
| 1138 | #endif /* __LIBBUSYBOX_H__ */
|
---|