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
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
|
/* shell.h -- The data structures used by the shell */
/* Copyright (C) 1993-2009 Free Software Foundation, Inc.
This file is part of GNU Bash, the Bourne Again SHell.
Bash is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Bash is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Bash. If not, see <http://www.gnu.org/licenses/>.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "bashjmp.h"
#include "command.h"
#include "syntax.h"
#include "general.h"
#include "error.h"
#include "variables.h"
#include "arrayfunc.h"
#include "quit.h"
#include "maxpath.h"
#include "unwind_prot.h"
#include "dispose_cmd.h"
#include "make_cmd.h"
#include "ocache.h"
#include "subst.h"
#include "sig.h"
#include "pathnames.h"
#include "externs.h"
extern int EOF_Reached;
#define NO_PIPE -1
#define REDIRECT_BOTH -2
#define NO_VARIABLE -1
/* Values that can be returned by execute_command (). */
#define EXECUTION_FAILURE 1
#define EXECUTION_SUCCESS 0
/* Usage messages by builtins result in a return status of 2. */
#define EX_BADUSAGE 2
#define EX_MISCERROR 2
/* Special exit statuses used by the shell, internally and externally. */
#define EX_RETRYFAIL 124
#define EX_WEXPCOMSUB 125
#define EX_BINARY_FILE 126
#define EX_NOEXEC 126
#define EX_NOINPUT 126
#define EX_NOTFOUND 127
#define EX_SHERRBASE 256 /* all special error values are > this. */
#define EX_BADSYNTAX 257 /* shell syntax error */
#define EX_USAGE 258 /* syntax error in usage */
#define EX_REDIRFAIL 259 /* redirection failed */
#define EX_BADASSIGN 260 /* variable assignment error */
#define EX_EXPFAIL 261 /* word expansion failed */
#define EX_DISKFALLBACK 262 /* fall back to disk command from builtin */
/* Flag values that control parameter pattern substitution. */
#define MATCH_ANY 0x000
#define MATCH_BEG 0x001
#define MATCH_END 0x002
#define MATCH_TYPEMASK 0x003
#define MATCH_GLOBREP 0x010
#define MATCH_QUOTED 0x020
#define MATCH_ASSIGNRHS 0x040
#define MATCH_STARSUB 0x080
/* Some needed external declarations. */
extern char **shell_environment;
extern WORD_LIST *rest_of_args;
/* Generalized global variables. */
extern char *command_execution_string;
extern int debugging_mode;
extern int executing, login_shell;
extern int interactive, interactive_shell;
extern int startup_state;
extern int reading_shell_script;
extern int shell_initialized;
extern int bash_argv_initialized;
extern int subshell_environment;
extern int current_command_number;
extern int indirection_level;
extern int shell_compatibility_level;
extern int running_under_emacs;
extern int posixly_correct;
extern int no_line_editing;
extern char *shell_name;
extern char *current_host_name;
extern int subshell_argc;
extern char **subshell_argv;
extern char **subshell_envp;
/* variables managed using shopt */
extern int hup_on_exit;
extern int check_jobs_at_exit;
extern int autocd;
extern int check_window_size;
/* from version.c */
extern int build_version, patch_level;
extern char *dist_version, *release_status;
extern int locale_mb_cur_max;
extern int locale_utf8locale;
/* Structure to pass around that holds a bitmap of file descriptors
to close, and the size of that structure. Used in execute_cmd.c. */
struct fd_bitmap {
int size;
char *bitmap;
};
#define FD_BITMAP_SIZE 32
#define CTLESC '\001'
#define CTLNUL '\177'
/* Information about the current user. */
struct user_info {
uid_t uid, euid;
gid_t gid, egid;
char *user_name;
char *shell; /* shell from the password file */
char *home_dir;
};
extern struct user_info current_user;
/* Force gcc to not clobber X on a longjmp(). Old versions of gcc mangle
this badly. */
#if (__GNUC__ > 2) || (__GNUC__ == 2 && __GNUC_MINOR__ > 8)
# define USE_VAR(x) ((void) &(x))
#else
# define USE_VAR(x)
#endif
#define HEREDOC_MAX 16
/* Structure in which to save partial parsing state when doing things like
PROMPT_COMMAND and bash_execute_unix_command execution. */
typedef struct _sh_parser_state_t {
/* parsing state */
int parser_state;
int *token_state;
char *token;
int token_buffer_size;
/* input line state -- line number saved elsewhere */
int input_line_terminator;
int eof_encountered;
#if defined (HANDLE_MULTIBYTE)
/* Nothing right now for multibyte state, but might want something later. */
#endif
char **prompt_string_pointer;
/* history state affecting or modified by the parser */
int current_command_line_count;
#if defined (HISTORY)
int remember_on_history;
int history_expansion_inhibited;
#endif
/* execution state possibly modified by the parser */
int last_command_exit_value;
#if defined (ARRAY_VARS)
ARRAY *pipestatus;
#endif
sh_builtin_func_t *last_shell_builtin, *this_shell_builtin;
/* flags state affecting the parser */
int expand_aliases;
int echo_input_at_read;
int need_here_doc;
int here_doc_first_line;
/* structures affecting the parser */
REDIRECT *redir_stack[HEREDOC_MAX];
} sh_parser_state_t;
typedef struct _sh_input_line_state_t {
char *input_line;
size_t input_line_index;
size_t input_line_size;
size_t input_line_len;
} sh_input_line_state_t;
/* Let's try declaring these here. */
extern char *parser_remaining_input __P((void));
extern sh_parser_state_t *save_parser_state __P((sh_parser_state_t *));
extern void restore_parser_state __P((sh_parser_state_t *));
extern sh_input_line_state_t *save_input_line_state __P((sh_input_line_state_t *));
extern void restore_input_line_state __P((sh_input_line_state_t *));
|
