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332 lines
7.5 KiB
C
332 lines
7.5 KiB
C
/* riscos.c - RISC OS stuff
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* Copyright (C) 2001 Free Software Foundation, Inc.
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*
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* This file is part of GnuPG for RISC OS.
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*
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* GnuPG is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* GnuPG is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
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*/
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#ifndef __RISCOS__C__
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#define __RISCOS__C__
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#include <config.h>
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#include <stdarg.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <errno.h>
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#include <kernel.h>
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#include <sys/swis.h>
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#include "util.h"
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#include "memory.h"
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#define __UNIXLIB_INTERNALS
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#include <sys/unix.h>
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#undef __UNIXLIB_INTERNALS
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/* RISC OS file open descriptor control list */
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struct fds_item {
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int fd;
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struct fds_item *next;
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};
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static struct fds_item *fds_list = NULL;
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static int initialized = 0;
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/* RISC OS functions */
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pid_t
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riscos_getpid(void)
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{
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_kernel_swi_regs r;
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r.r[0] = 3;
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if (_kernel_swi(Wimp_ReadSysInfo, &r, &r))
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log_fatal("Wimp_ReadSysInfo failed: Couldn't get WimpState (R0=3)!\n");
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if (!r.r[0])
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return (pid_t) 0;
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r.r[0] = 5;
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if (_kernel_swi(Wimp_ReadSysInfo, &r, &r))
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log_fatal("Wimp_ReadSysInfo failed: Couldn't get task handle (R0=5)!\n");
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return (pid_t) r.r[0];
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}
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int
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riscos_kill(pid_t pid, int sig)
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{
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_kernel_swi_regs r;
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int buf[4];
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if (sig)
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kill(pid, sig);
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r.r[0] = 0;
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do {
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r.r[1] = (int) buf;
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r.r[2] = 16;
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if (_kernel_swi(TaskManager_EnumerateTasks, &r, &r))
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log_fatal("TaskManager_EnumerateTasks failed!\n");
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if (buf[0] == pid)
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return 0;
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} while (r.r[0] >= 0);
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return __set_errno(ESRCH);
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}
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FILE *
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riscos_fopen(const char *filename, const char *mode)
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{
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FILE *fp;
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_kernel_swi_regs r;
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_kernel_oserror *e;
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int filetype;
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r.r[0] = 17;
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r.r[1] = (int) filename;
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if (e =_kernel_swi(OS_File, &r, &r))
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log_fatal("Can't retrieve object information for %s\n", filename);
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if (r.r[0] == 2) {
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errno = EISDIR;
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return NULL;
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}
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if (r.r[0] == 3) {
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/* setting file to to non-image file, after fopening, restore */
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filetype = (r.r[2] >> 8) & 0xfff;
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set_filetype(filename, 0xfff);
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fp = fopen(filename, mode);
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set_filetype(filename, filetype);
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} else {
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fp = fopen(filename, mode);
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}
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return fp;
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}
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int
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riscos_open(const char *filename, int oflag, ...)
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{
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va_list ap;
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_kernel_swi_regs r;
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_kernel_oserror *e;
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int fd, mode, filetype;
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r.r[0] = 17;
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r.r[1] = (int) filename;
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if (e =_kernel_swi(OS_File, &r, &r))
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log_fatal("Can't retrieve object information for %s\n", filename);
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if (r.r[0] == 2) {
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errno = EISDIR;
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return NULL;
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}
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va_start(ap, oflag);
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mode = va_arg(ap, int);
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va_end(ap);
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if (r.r[0] == 3) {
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/* setting file to to non-image file, after opening, restore */
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filetype = (r.r[2] >> 8) & 0xfff;
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set_filetype(filename, 0xfff);
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if (!mode)
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fd = open(filename, oflag);
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else
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fd = open(filename, oflag, mode);
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set_filetype(filename, filetype);
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} else {
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if (!mode)
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fd = open(filename, oflag);
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else
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fd = open(filename, oflag, mode);
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}
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return fd;
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}
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int
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riscos_fstat(int fildes, struct stat *buf)
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{
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_kernel_swi_regs r;
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_kernel_oserror *e;
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char *filename;
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int rc, filetype;
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int handle = (int) __u->fd[fildes].handle;
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r.r[0] = 7;
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r.r[1] = handle;
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r.r[2] = 0;
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r.r[5] = 0;
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if (e = _kernel_swi(OS_Args, &r, &r))
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log_fatal("Can't convert from file handle to name\n");
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filename = m_alloc(1 - r.r[5]);
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r.r[0] = 7;
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r.r[1] = handle;
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r.r[2] = (int) filename;
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r.r[5] = 1-r.r[5];
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if (e = _kernel_swi(OS_Args, &r, &r))
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log_fatal("Can't convert from file handle to name\n");
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r.r[0] = 17;
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r.r[1] = (int) filename;
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if (e =_kernel_swi(OS_File, &r, &r))
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log_fatal("Can't retrieve object information for %s\n", filename);
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if (r.r[0] == 2) {
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errno = EISDIR;
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return NULL;
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}
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if (r.r[0] == 3) {
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/* setting file to to non-image file, after fstating, restore */
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filetype = (r.r[2] >> 8) & 0xfff;
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set_filetype(filename, 0xfff);
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rc = fstat(fildes, buf);
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set_filetype(filename, filetype);
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} else {
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rc = fstat(fildes, buf);
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}
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m_free(filename);
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return rc;
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}
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#ifdef DEBUG
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void
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dump_fdlist(void)
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{
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struct fds_item *iter = fds_list;
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printf("list of open file descriptors:\n");
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while (iter) {
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printf(" %i\n", iter->fd);
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iter = iter->next;
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}
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}
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#endif /* DEBUG */
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int
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fdopenfile(const char *filename, const int allow_write)
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{
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struct fds_item *h;
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int fd;
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if (allow_write)
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fd = open(filename, O_CREAT | O_TRUNC | O_RDWR, S_IRUSR | S_IWUSR);
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else
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fd = open(filename, O_RDONLY);
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if (fd == -1)
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log_error("can't open file %s: %i, %s\n", filename, errno, strerror(errno));
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if (!initialized) {
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atexit (close_fds);
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initialized = 1;
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}
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h = fds_list;
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fds_list = (struct fds_item *) m_alloc(sizeof(struct fds_item));
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fds_list->fd = fd;
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fds_list->next = h;
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return fd;
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}
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void
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close_fds(void)
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{
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FILE *fp;
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struct fds_item *h = fds_list;
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while( fds_list ) {
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h = fds_list->next;
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fp = fdopen (fds_list->fd, "a");
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if (fp)
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fflush(fp);
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close(fds_list->fd);
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m_free(fds_list);
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fds_list = h;
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}
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}
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int
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renamefile(const char *old, const char *new)
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{
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_kernel_swi_regs r;
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_kernel_oserror *e;
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r.r[0] = 25;
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r.r[1] = (int) old;
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r.r[2] = (int) new;
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if (e = _kernel_swi(OS_FSControl, &r, &r)) {
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if (e->errnum == 214)
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return __set_errno(ENOENT);
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if (e->errnum == 176)
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return __set_errno(EEXIST);
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printf("Error during renaming: %i, %s\n", e->errnum, e->errmess);
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}
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return 0;
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}
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char *
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gstrans(const char *old)
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{
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_kernel_swi_regs r;
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int c = 0;
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int size = 256;
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char *buf, *tmp;
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buf = (char *) m_alloc(size);
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do {
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r.r[0] = (int) old;
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r.r[1] = (int) buf;
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r.r[2] = size;
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_kernel_swi_c(OS_GSTrans, &r, &r, &c);
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if (c) {
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size += 256;
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tmp = (char *) m_realloc(buf, size);
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if (!tmp)
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log_fatal("Can't claim memory for OS_GSTrans buffer!\n");
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buf = tmp;
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}
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} while (c);
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buf[r.r[2]] = '\0';
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tmp = (char *) m_realloc(buf, r.r[2] + 1);
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if (!tmp)
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log_fatal("Couldn't realloc memory after OS_GSTrans!\n");
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return tmp;
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}
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void
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set_filetype(const char *filename, const int type)
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{
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_kernel_swi_regs r;
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r.r[0] = 18;
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r.r[1] = (int) filename;
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r.r[2] = type;
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if (_kernel_swi(OS_File, &r, &r))
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log_fatal("Can't set filetype for %s\n", filename);
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}
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void
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not_implemented(const char *feature)
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{
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log_info("%s is not implemented in the RISC OS version!\n", feature);
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}
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#endif /* !__RISCOS__C__ */
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