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
|
This file is exit.def, from which is created exit.c.
It implements the builtins "exit", and "logout" in Bash.
Copyright (C) 1987-2009 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/>.
$PRODUCES exit.c
$BUILTIN exit
$FUNCTION exit_builtin
$SHORT_DOC exit [n]
Exit the shell.
Exits the shell with a status of N. If N is omitted, the exit status
is that of the last command executed.
$END
#include <config.h>
#include "../bashtypes.h"
#include <stdio.h>
#if defined (HAVE_UNISTD_H)
# include <unistd.h>
#endif
#include "../bashintl.h"
#include "../shell.h"
#include "../jobs.h"
#include "common.h"
#include "builtext.h" /* for jobs_builtin */
extern int check_jobs_at_exit;
extern int last_command_exit_value;
extern int running_trap, trap_saved_exit_value;
extern int subshell_environment;
extern sh_builtin_func_t *this_shell_builtin;
extern sh_builtin_func_t *last_shell_builtin;
static int exit_or_logout __P((WORD_LIST *));
static int sourced_logout;
int
exit_builtin (list)
WORD_LIST *list;
{
if (interactive)
{
fprintf (stderr, login_shell ? _("logout\n") : "exit\n");
fflush (stderr);
}
return (exit_or_logout (list));
}
$BUILTIN logout
$FUNCTION logout_builtin
$SHORT_DOC logout [n]
Exit a login shell.
Exits a login shell with exit status N. Returns an error if not executed
in a login shell.
$END
/* How to logout. */
int
logout_builtin (list)
WORD_LIST *list;
{
if (login_shell == 0 /* && interactive */)
{
builtin_error (_("not login shell: use `exit'"));
return (EXECUTION_FAILURE);
}
else
return (exit_or_logout (list));
}
static int
exit_or_logout (list)
WORD_LIST *list;
{
int exit_value;
#if defined (JOB_CONTROL)
int exit_immediate_okay, stopmsg;
exit_immediate_okay = (interactive == 0 ||
last_shell_builtin == exit_builtin ||
last_shell_builtin == logout_builtin ||
last_shell_builtin == jobs_builtin);
/* Check for stopped jobs if the user wants to. */
if (exit_immediate_okay == 0)
{
register int i;
for (i = stopmsg = 0; i < js.j_jobslots; i++)
if (jobs[i] && STOPPED (i))
stopmsg = JSTOPPED;
else if (check_jobs_at_exit && stopmsg == 0 && jobs[i] && RUNNING (i))
stopmsg = JRUNNING;
if (stopmsg == JSTOPPED)
fprintf (stderr, _("There are stopped jobs.\n"));
else if (stopmsg == JRUNNING)
fprintf (stderr, _("There are running jobs.\n"));
if (stopmsg && check_jobs_at_exit)
list_all_jobs (JLIST_STANDARD);
if (stopmsg)
{
/* This is NOT superfluous because EOF can get here without
going through the command parser. Set both last and this
so that either `exit', `logout', or ^D will work to exit
immediately if nothing intervenes. */
this_shell_builtin = last_shell_builtin = exit_builtin;
return (EXECUTION_FAILURE);
}
}
#endif /* JOB_CONTROL */
/* Get return value if present. This means that you can type
`logout 5' to a shell, and it returns 5. */
/* If we're running the exit trap (running_trap == 1, since running_trap
gets set to SIG+1), and we don't have a argument given to `exit'
(list == 0), use the exit status we saved before running the trap
commands (trap_saved_exit_value). */
exit_value = (running_trap == 1 && list == 0) ? trap_saved_exit_value : get_exitstat (list);
bash_logout ();
last_command_exit_value = exit_value;
/* Exit the program. */
jump_to_top_level (EXITPROG);
/*NOTREACHED*/
}
void
bash_logout ()
{
/* Run our `~/.bash_logout' file if it exists, and this is a login shell. */
if (login_shell && sourced_logout++ == 0 && subshell_environment == 0)
{
maybe_execute_file ("~/.bash_logout", 1);
#ifdef SYS_BASH_LOGOUT
maybe_execute_file (SYS_BASH_LOGOUT, 1);
#endif
}
}
|
