1 /* Toybox infrastructure. 2 * 3 * Copyright 2006 Rob Landley <rob@landley.net> 4 */ 5 6 // Stuff that needs to go before the standard headers 7 8 #include "generated/config.h" 9 #include "lib/portability.h" 10 11 // General posix-2008 headers 12 #include <ctype.h> 13 #include <dirent.h> 14 #include <errno.h> 15 #include <fcntl.h> 16 #include <fnmatch.h> 17 #include <grp.h> 18 #include <inttypes.h> 19 #include <limits.h> 20 #include <math.h> 21 #include <pwd.h> 22 #include <regex.h> 23 #include <sched.h> 24 #include <setjmp.h> 25 #include <signal.h> 26 #include <stdarg.h> 27 #include <stddef.h> 28 #include <stdint.h> 29 #include <stdio.h> 30 #include <stdlib.h> 31 #include <string.h> 32 #include <strings.h> 33 #include <sys/mman.h> 34 #include <sys/resource.h> 35 #include <sys/stat.h> 36 #include <sys/statvfs.h> 37 #include <sys/time.h> 38 #include <sys/times.h> 39 #include <sys/utsname.h> 40 #include <sys/wait.h> 41 #include <syslog.h> 42 #include <termios.h> 43 #include <time.h> 44 #include <unistd.h> 45 #include <utime.h> 46 47 // Posix networking 48 49 #include <arpa/inet.h> 50 #include <netdb.h> 51 #include <net/if.h> 52 #include <netinet/in.h> 53 #include <netinet/tcp.h> 54 #include <poll.h> 55 #include <sys/socket.h> 56 #include <sys/un.h> 57 58 // Internationalization support (also in POSIX and LSB) 59 60 #include <locale.h> 61 #include <wchar.h> 62 #include <wctype.h> 63 64 // LSB 4.1 headers 65 #include <pty.h> 66 #include <sys/ioctl.h> 67 #include <sys/statfs.h> 68 #include <sys/sysinfo.h> 69 70 #include "lib/lib.h" 71 #include "toys/e2fs.h" 72 73 // Get list of function prototypes for all enabled command_main() functions. 74 75 #define NEWTOY(name, opts, flags) void name##_main(void); 76 #define OLDTOY(name, oldname, flags) void oldname##_main(void); 77 #include "generated/newtoys.h" 78 #include "generated/flags.h" 79 #include "generated/globals.h" 80 81 // These live in main.c 82 83 struct toy_list *toy_find(char *name); 84 void toy_init(struct toy_list *which, char *argv[]); 85 void toy_exec(char *argv[]); 86 87 // Flags describing command behavior. 88 89 #define TOYFLAG_USR (1<<0) 90 #define TOYFLAG_BIN (1<<1) 91 #define TOYFLAG_SBIN (1<<2) 92 #define TOYMASK_LOCATION ((1<<4)-1) 93 94 // This is a shell built-in function, running in the same process context. 95 #define TOYFLAG_NOFORK (1<<4) 96 97 // Start command with a umask of 0 (saves old umask in this.old_umask) 98 #define TOYFLAG_UMASK (1<<5) 99 100 // This command runs as root. 101 #define TOYFLAG_STAYROOT (1<<6) 102 #define TOYFLAG_NEEDROOT (1<<7) 103 #define TOYFLAG_ROOTONLY (TOYFLAG_STAYROOT|TOYFLAG_NEEDROOT) 104 105 // Call setlocale to listen to environment variables. 106 // This invalidates sprintf("%.*s", size, string) as a valid length constraint. 107 #define TOYFLAG_LOCALE (1<<8) 108 109 // Array of available commands 110 111 extern struct toy_list { 112 char *name; 113 void (*toy_main)(void); 114 char *options; 115 int flags; 116 } toy_list[]; 117 118 // Global context shared by all commands. 119 120 extern struct toy_context { 121 struct toy_list *which; // Which entry in toy_list is this one? 122 char **argv; // Original command line arguments 123 char **optargs; // Arguments left over from get_optflags() 124 unsigned optflags; // Command line option flags from get_optflags() 125 int exitval; // Value error_exit feeds to exit() 126 int optc; // Count of optargs 127 int exithelp; // Should error_exit print a usage message first? 128 int old_umask; // Old umask preserved by TOYFLAG_UMASK 129 int toycount; // Total number of commands in this build 130 int signal; // generic_signal() records what signal it saw here 131 int signalfd; // and writes signal to this fd, if set 132 133 // This is at the end so toy_init() doesn't zero it. 134 jmp_buf *rebound; // longjmp here instead of exit when do_rebound set 135 int recursion; // How many nested calls to toy_exec() 136 } toys; 137 138 // Two big temporary buffers: one for use by commands, one for library functions 139 140 extern char toybuf[4096], libbuf[4096]; 141 142 extern char **environ; 143 144 #define GLOBALS(...) 145 146 #define ARRAY_LEN(array) (sizeof(array)/sizeof(*array)) 147