| /* |
| * 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" |
| #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"); |
| 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); |
| } |