summaryrefslogtreecommitdiff
path: root/toys.h
blob: 7975425728014bc44816443d21f242d11a0ce1b4 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
/* Toybox infrastructure.
 *
 * Copyright 2006 Rob Landley <rob@landley.net>
 */

// Stuff that needs to go before the standard headers

#include "generated/config.h"
#include "lib/portability.h"

// General posix-2008 headers
#include <ctype.h>
#include <dirent.h>
#include <errno.h>
#include <fcntl.h>
#include <fnmatch.h>
#include <grp.h>
#include <inttypes.h>
#include <limits.h>
#include <math.h>
#include <pwd.h>
#include <regex.h>
#include <sched.h>
#include <setjmp.h>
#include <signal.h>
#include <stdarg.h>
#include <stddef.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <strings.h>
#include <sys/mman.h>
#include <sys/resource.h>
#include <sys/stat.h>
#include <sys/statvfs.h>
#include <sys/time.h>
#include <sys/times.h>
#include <sys/utsname.h>
#include <sys/wait.h>
#include <syslog.h>
#include <termios.h>
#include <time.h>
#include <unistd.h>
#include <utime.h>

// Posix networking

#include <arpa/inet.h>
#include <netdb.h>
#include <net/if.h>
#include <netinet/in.h>
#include <netinet/tcp.h>
#include <poll.h>
#include <sys/socket.h>
#include <sys/un.h>

// Internationalization support (also in POSIX and LSB)

#include <locale.h>
#include <wchar.h>
#include <wctype.h>

// LSB 4.1 headers
#include <pty.h>
#include <sys/ioctl.h>
#include <sys/statfs.h>
#include <sys/sysinfo.h>

#include "lib/lib.h"
#include "lib/lsm.h"
#include "toys/e2fs.h"

// Get list of function prototypes for all enabled command_main() functions.

#define NEWTOY(name, opts, flags) void name##_main(void);
#define OLDTOY(name, oldname, flags) void oldname##_main(void);
#include "generated/newtoys.h"
#include "generated/flags.h"
#include "generated/globals.h"

// These live in main.c

struct toy_list *toy_find(char *name);
void toy_init(struct toy_list *which, char *argv[]);
void toy_exec(char *argv[]);

// Flags describing command behavior.

#define TOYFLAG_USR      (1<<0)
#define TOYFLAG_BIN      (1<<1)
#define TOYFLAG_SBIN     (1<<2)
#define TOYMASK_LOCATION ((1<<4)-1)

// This is a shell built-in function, running in the same process context.
#define TOYFLAG_NOFORK   (1<<4)

// Start command with a umask of 0 (saves old umask in this.old_umask)
#define TOYFLAG_UMASK    (1<<5)

// This command runs as root.
#define TOYFLAG_STAYROOT (1<<6)
#define TOYFLAG_NEEDROOT (1<<7)
#define TOYFLAG_ROOTONLY (TOYFLAG_STAYROOT|TOYFLAG_NEEDROOT)

// Call setlocale to listen to environment variables.
// This invalidates sprintf("%.*s", size, string) as a valid length constraint.
#define TOYFLAG_LOCALE   (1<<8)

// Array of available commands

extern struct toy_list {
  char *name;
  void (*toy_main)(void);
  char *options;
  int flags;
} toy_list[];

// Global context shared by all commands.

extern struct toy_context {
  struct toy_list *which;  // Which entry in toy_list is this one?
  char **argv;             // Original command line arguments
  char **optargs;          // Arguments left over from get_optflags()
  unsigned optflags;       // Command line option flags from get_optflags()
  int exitval;             // Value error_exit feeds to exit()
  int optc;                // Count of optargs
  int exithelp;            // Should error_exit print a usage message first?
  int old_umask;           // Old umask preserved by TOYFLAG_UMASK
  int toycount;            // Total number of commands in this build
  int signal;              // generic_signal() records what signal it saw here
  int signalfd;            // and writes signal to this fd, if set

  // This is at the end so toy_init() doesn't zero it.
  jmp_buf *rebound;        // longjmp here instead of exit when do_rebound set
  int recursion;           // How many nested calls to toy_exec()
} toys;

// Two big temporary buffers: one for use by commands, one for library functions

extern char toybuf[4096], libbuf[4096];

extern char **environ;

#define GLOBALS(...)

#define ARRAY_LEN(array) (sizeof(array)/sizeof(*array))