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
83struct toy_list *toy_find(char *name);
84void toy_init(struct toy_list *which, char *argv[]);
85void 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
111extern 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
120extern 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
140extern char toybuf[4096], libbuf[4096];
141
142extern char **environ;
143
144#define GLOBALS(...)
145
146#define ARRAY_LEN(array) (sizeof(array)/sizeof(*array))
147