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
|
/*
* Copyright 1987, 1988 by MIT Student Information Processing Board
*
* Permission to use, copy, modify, and distribute this software and
* its documentation for any purpose is hereby granted, provided that
* the names of M.I.T. and the M.I.T. S.I.P.B. not be used in
* advertising or publicity pertaining to distribution of the software
* without specific, written prior permission. M.I.T. and the
* M.I.T. S.I.P.B. make no representations about the suitability of
* this software for any purpose. It is provided "as is" without
* express or implied warranty.
*/
#include "config.h"
#include "ss_internal.h"
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <signal.h>
#include <setjmp.h>
#include <sys/wait.h>
typedef void sigret_t;
void ss_list_requests(int argc __SS_ATTR((unused)),
const char * const *argv __SS_ATTR((unused)),
int sci_idx, void *infop __SS_ATTR((unused)))
{
ss_request_entry *entry;
char const * const *name;
int i, spacing;
ss_request_table **table;
FILE *output;
int fd;
sigset_t omask, igmask;
sigret_t (*func)(int);
#ifndef NO_FORK
int waitb;
#endif
sigemptyset(&igmask);
sigaddset(&igmask, SIGINT);
sigprocmask(SIG_BLOCK, &igmask, &omask);
func = signal(SIGINT, SIG_IGN);
fd = ss_pager_create();
if (fd < 0) {
perror("ss_pager_create");
(void) signal(SIGINT, func);
return;
}
output = fdopen(fd, "w");
if (!output) {
perror("fdopen");
close(fd);
(void) signal(SIGINT, func);
return;
}
sigprocmask(SIG_SETMASK, &omask, (sigset_t *) 0);
fprintf (output, "Available %s requests:\n\n",
ss_info (sci_idx) -> subsystem_name);
for (table = ss_info(sci_idx)->rqt_tables; *table; table++) {
entry = (*table)->requests;
for (; entry->command_names; entry++) {
spacing = -2;
if (entry->flags & SS_OPT_DONT_LIST)
continue;
for (name = entry->command_names; *name; name++) {
int len = strlen(*name);
fputs(*name, output);
spacing += len + 2;
if (name[1]) {
fputs(", ", output);
}
}
if (spacing > 23) {
fputc('\n', output);
spacing = 0;
}
for (i = 0; i < 25 - spacing; i++)
fputc(' ', output);
fputs(entry->info_string, output);
fputc('\n', output);
}
}
fclose(output);
#ifndef NO_FORK
wait(&waitb);
#endif
(void) signal(SIGINT, func);
}
|
