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726f6388 JA |
1 | /* shell.h -- The data structures used by the shell */ |
2 | ||
3 | /* Copyright (C) 1993 Free Software Foundation, Inc. | |
4 | ||
5 | This file is part of GNU Bash, the Bourne Again SHell. | |
6 | ||
7 | Bash is free software; you can redistribute it and/or modify it under | |
8 | the terms of the GNU General Public License as published by the Free | |
9 | Software Foundation; either version 2, or (at your option) any later | |
10 | version. | |
11 | ||
12 | Bash is distributed in the hope that it will be useful, but WITHOUT ANY | |
13 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
14 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
15 | for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License along | |
18 | with Bash; see the file COPYING. If not, write to the Free Software | |
bb70624e | 19 | Foundation, 59 Temple Place, Suite 330, Boston, MA 02111 USA. */ |
726f6388 | 20 | |
f73dda09 | 21 | #ifdef HAVE_CONFIG_H |
726f6388 | 22 | #include "config.h" |
f73dda09 | 23 | #endif |
ccc6cda3 JA |
24 | |
25 | #include "bashjmp.h" | |
26 | ||
726f6388 | 27 | #include "command.h" |
28ef6c31 | 28 | #include "syntax.h" |
726f6388 JA |
29 | #include "general.h" |
30 | #include "error.h" | |
31 | #include "variables.h" | |
f73dda09 | 32 | #include "arrayfunc.h" |
726f6388 JA |
33 | #include "quit.h" |
34 | #include "maxpath.h" | |
35 | #include "unwind_prot.h" | |
36 | #include "dispose_cmd.h" | |
37 | #include "make_cmd.h" | |
7117c2d2 | 38 | #include "ocache.h" |
726f6388 | 39 | #include "subst.h" |
ccc6cda3 JA |
40 | #include "sig.h" |
41 | #include "pathnames.h" | |
726f6388 | 42 | #include "externs.h" |
f73dda09 | 43 | #include "version.h" |
726f6388 JA |
44 | |
45 | extern int EOF_Reached; | |
46 | ||
47 | #define NO_PIPE -1 | |
48 | #define REDIRECT_BOTH -2 | |
726f6388 JA |
49 | |
50 | #define NO_VARIABLE -1 | |
51 | ||
726f6388 JA |
52 | /* Values that can be returned by execute_command (). */ |
53 | #define EXECUTION_FAILURE 1 | |
54 | #define EXECUTION_SUCCESS 0 | |
55 | ||
56 | /* Usage messages by builtins result in a return status of 2. */ | |
ccc6cda3 JA |
57 | #define EX_BADUSAGE 2 |
58 | ||
59 | /* Special exit statuses used by the shell, internally and externally. */ | |
60 | #define EX_BINARY_FILE 126 | |
61 | #define EX_NOEXEC 126 | |
62 | #define EX_NOINPUT 126 | |
63 | #define EX_NOTFOUND 127 | |
726f6388 | 64 | |
ccc6cda3 JA |
65 | #define EX_SHERRBASE 256 /* all special error values are > this. */ |
66 | ||
67 | #define EX_BADSYNTAX 257 /* shell syntax error */ | |
68 | #define EX_USAGE 258 /* syntax error in usage */ | |
69 | #define EX_REDIRFAIL 259 /* redirection failed */ | |
70 | #define EX_BADASSIGN 260 /* variable assignment error */ | |
71 | #define EX_EXPFAIL 261 /* word expansion failed */ | |
726f6388 | 72 | |
ccc6cda3 JA |
73 | /* Flag values that control parameter pattern substitution. */ |
74 | #define MATCH_ANY 0x0 | |
75 | #define MATCH_BEG 0x1 | |
76 | #define MATCH_END 0x2 | |
77 | ||
78 | #define MATCH_TYPEMASK 0x3 | |
79 | ||
80 | #define MATCH_GLOBREP 0x10 | |
81 | #define MATCH_QUOTED 0x20 | |
726f6388 | 82 | |
ccc6cda3 | 83 | /* Some needed external declarations. */ |
726f6388 JA |
84 | extern char **shell_environment; |
85 | extern WORD_LIST *rest_of_args; | |
86 | ||
87 | /* Generalized global variables. */ | |
88 | extern int executing, login_shell; | |
f73dda09 | 89 | extern int interactive, interactive_shell; |
7117c2d2 | 90 | extern int startup_state; |
726f6388 JA |
91 | |
92 | /* Structure to pass around that holds a bitmap of file descriptors | |
93 | to close, and the size of that structure. Used in execute_cmd.c. */ | |
94 | struct fd_bitmap { | |
f73dda09 | 95 | int size; |
726f6388 JA |
96 | char *bitmap; |
97 | }; | |
98 | ||
99 | #define FD_BITMAP_SIZE 32 | |
100 | ||
101 | #define CTLESC '\001' | |
102 | #define CTLNUL '\177' | |
103 | ||
104 | /* Information about the current user. */ | |
105 | struct user_info { | |
d166f048 JA |
106 | uid_t uid, euid; |
107 | gid_t gid, egid; | |
726f6388 JA |
108 | char *user_name; |
109 | char *shell; /* shell from the password file */ | |
110 | char *home_dir; | |
111 | }; | |
112 | ||
113 | extern struct user_info current_user; | |
f73dda09 JA |
114 | |
115 | /* Force gcc to not clobber X on a longjmp(). Old versions of gcc mangle | |
116 | this badly. */ | |
7117c2d2 | 117 | #if (__GNUC__ > 2) || (__GNUC__ == 2 && __GNUC_MINOR__ > 8) |
f73dda09 JA |
118 | # define USE_VAR(x) ((void) &(x)) |
119 | #else | |
120 | # define USE_VAR(x) | |
121 | #endif |