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      1 /* Toybox infrastructure.
      2  *
      3  * Copyright 2006 Rob Landley <rob (at) 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 "lib/lsm.h"
     72 #include "lib/toyflags.h"
     73 #include "toys/e2fs.h"
     74 
     75 // Get list of function prototypes for all enabled command_main() functions.
     76 
     77 #define NEWTOY(name, opts, flags) void name##_main(void);
     78 #define OLDTOY(name, oldname, flags) void oldname##_main(void);
     79 #include "generated/newtoys.h"
     80 #include "generated/flags.h"
     81 #include "generated/globals.h"
     82 #include "generated/tags.h"
     83 
     84 // These live in main.c
     85 
     86 struct toy_list *toy_find(char *name);
     87 void toy_init(struct toy_list *which, char *argv[]);
     88 void toy_exec(char *argv[]);
     89 
     90 // Array of available commands
     91 
     92 extern struct toy_list {
     93   char *name;
     94   void (*toy_main)(void);
     95   char *options;
     96   int flags;
     97 } toy_list[];
     98 
     99 // Global context shared by all commands.
    100 
    101 extern struct toy_context {
    102   struct toy_list *which;  // Which entry in toy_list is this one?
    103   char **argv;             // Original command line arguments
    104   char **optargs;          // Arguments left over from get_optflags()
    105   unsigned long long optflags; // Command line option flags from get_optflags()
    106   int exitval;             // Value error_exit feeds to exit()
    107   int optc;                // Count of optargs
    108   int old_umask;           // Old umask preserved by TOYFLAG_UMASK
    109   short toycount;          // Total number of commands in this build
    110   short signal;            // generic_signal() records what signal it saw here
    111   int signalfd;            // and writes signal to this fd, if set
    112   int wasroot;             // dropped setuid
    113 
    114   // This is at the end so toy_init() doesn't zero it.
    115   jmp_buf *rebound;        // longjmp here instead of exit when do_rebound set
    116   struct arg_list *xexit;  // atexit() functions for xexit(), set by sigatexit()
    117   void *stacktop;          // nested toy_exec() call count, or 0 if vforked
    118 } toys;
    119 
    120 // Two big temporary buffers: one for use by commands, one for library functions
    121 
    122 extern char toybuf[4096], libbuf[4096];
    123 
    124 extern char **environ;
    125 
    126 #define GLOBALS(...)
    127 #define ARRAY_LEN(array) (sizeof(array)/sizeof(*array))
    128 #define TAGGED_ARRAY(X, ...) {__VA_ARGS__}
    129