/* Copyright (C) 1995 Free Software Foundation, Inc. * * This program 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 2, or (at your option) * any later version. * * This program 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 this software; see the file COPYING. If not, write to * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. * * As a special exception, the Free Software Foundation gives permission * for additional uses of the text contained in its release of GUILE. * * The exception is that, if you link the GUILE library with other files * to produce an executable, this does not by itself cause the * resulting executable to be covered by the GNU General Public License. * Your use of that executable is in no way restricted on account of * linking the GUILE library code into it. * * This exception does not however invalidate any other reasons why * the executable file might be covered by the GNU General Public License. * * This exception applies only to the code released by the * Free Software Foundation under the name GUILE. If you copy * code from other Free Software Foundation releases into a copy of * GUILE, as the General Public License permits, the exception does * not apply to the code that you add in this way. To avoid misleading * anyone as to the status of such modified files, you must delete * this exception notice from them. * * If you write modifications of your own for GUILE, it is your choice * whether to permit this exception to apply to your modifications. * If you do not wish that, delete this exception notice. */ #include #include "fd.h" #include "_scm.h" #ifdef HAVE_STRING_H #include #endif #ifdef HAVE_UNISTD_H #include #endif SCM_PROC (s_sys_ftell, "ftell", 1, 0, 0, scm_sys_ftell); #ifdef __STDC__ SCM scm_sys_ftell (SCM port) #else SCM scm_sys_ftell (port) SCM port; #endif { long pos; SCM_ASSERT (SCM_NIMP (port) && SCM_OPFPORTP (port), port, SCM_ARG1, s_sys_ftell); SCM_SYSCALL (pos = ftell ((FILE *)SCM_STREAM (port))); if (pos < 0) SCM_SYSERROR (s_sys_ftell); if (pos > 0 && SCM_CRDYP (port)) pos--; return SCM_MAKINUM (pos); } SCM_PROC (s_sys_fseek, "fseek", 3, 0, 0, scm_sys_fseek); #ifdef __STDC__ SCM scm_sys_fseek (SCM port, SCM offset, SCM whence) #else SCM scm_sys_fseek (port, offset, whence) SCM port; SCM offset; SCM whence; #endif { int rv; SCM_ASSERT (SCM_NIMP (port) && SCM_OPFPORTP (port), port, SCM_ARG1, s_sys_fseek); SCM_ASSERT (SCM_INUMP (offset), offset, SCM_ARG2, s_sys_fseek); SCM_ASSERT (SCM_INUMP (whence) && (SCM_INUM (whence) < 3) && (SCM_INUM (whence) >= 0), whence, SCM_ARG3, s_sys_fseek); SCM_CLRDY (port); /* Clear ungetted char */ /* Values of whence are interned in scm_init_ioext. */ rv = fseek ((FILE *)SCM_STREAM (port), SCM_INUM (offset), SCM_INUM (whence)); if (rv != 0) SCM_SYSERROR (s_sys_fseek); return SCM_UNSPECIFIED; } SCM_PROC (s_sys_freopen, "freopen", 3, 0, 0, scm_sys_freopen); #ifdef __STDC__ SCM scm_sys_freopen (SCM filename, SCM modes, SCM port) #else SCM scm_sys_freopen (filename, modes, port) SCM filename; SCM modes; SCM port; #endif { FILE *f; SCM_ASSERT (SCM_NIMP (filename) && SCM_STRINGP (filename), filename, SCM_ARG1, s_sys_freopen); SCM_ASSERT (SCM_NIMP (modes) && SCM_STRINGP (modes), modes, SCM_ARG2, s_sys_freopen); SCM_DEFER_INTS; SCM_ASSERT (SCM_NIMP (port) && SCM_FPORTP (port), port, SCM_ARG3, s_sys_freopen); SCM_SYSCALL (f = freopen (SCM_CHARS (filename), SCM_CHARS (modes), (FILE *)SCM_STREAM (port))); if (!f) { SCM p; p = port; port = SCM_MAKINUM (errno); SCM_CAR (p) &= ~SCM_OPN; scm_remove_from_port_table (p); } else { SCM_CAR (port) = scm_tc16_fport | scm_mode_bits (SCM_CHARS (modes)); SCM_SETSTREAM (port, (SCM)f); if (SCM_BUF0 & (SCM_CAR (port) = scm_tc16_fport | scm_mode_bits (SCM_CHARS (modes)))) scm_setbuf0 (port); } SCM_ALLOW_INTS; return port; } SCM_PROC (s_sys_duplicate_port, "duplicate-port", 2, 0, 0, scm_sys_duplicate_port); #ifdef __STDC__ SCM scm_sys_duplicate_port (SCM oldpt, SCM modes) #else SCM scm_sys_duplicate_port (oldpt, modes) SCM oldpt; SCM modes; #endif { int oldfd; int newfd; FILE *f; SCM newpt; SCM_ASSERT (SCM_NIMP (oldpt) && SCM_OPPORTP (oldpt), oldpt, SCM_ARG1, s_sys_duplicate_port); SCM_ASSERT (SCM_NIMP (modes) && SCM_STRINGP (modes), modes, SCM_ARG2, s_sys_duplicate_port); SCM_NEWCELL (newpt); SCM_DEFER_INTS; oldfd = fileno ((FILE *)SCM_STREAM (oldpt)); if (oldfd == -1) SCM_SYSERROR (s_sys_duplicate_port); SCM_SYSCALL (newfd = dup (oldfd)); if (newfd == -1) SCM_SYSERROR (s_sys_duplicate_port); f = fdopen (newfd, SCM_CHARS (modes)); if (!f) { SCM_SYSCALL (close (newfd)); SCM_SYSERROR (s_sys_duplicate_port); } { struct scm_port_table * pt; pt = scm_add_to_port_table (newpt); SCM_SETPTAB_ENTRY (newpt, pt); if (SCM_BUF0 & (SCM_CAR (newpt) = scm_tc16_fport | scm_mode_bits (SCM_CHARS (modes)))) scm_setbuf0 (newpt); SCM_SETSTREAM (newpt, (SCM)f); SCM_PTAB_ENTRY (newpt)->file_name = SCM_PTAB_ENTRY (oldpt)->file_name; } SCM_ALLOW_INTS; return newpt; } SCM_PROC (s_sys_redirect_port, "redirect-port", 2, 0, 0, scm_sys_redirect_port); #ifdef __STDC__ SCM scm_sys_redirect_port (SCM into_pt, SCM from_pt) #else SCM scm_sys_redirect_port (into_pt, from_pt) SCM into_pt; SCM from_pt; #endif { int ans, oldfd, newfd; SCM_DEFER_INTS; SCM_ASSERT (SCM_NIMP (into_pt) && SCM_OPPORTP (into_pt), into_pt, SCM_ARG1, s_sys_redirect_port); SCM_ASSERT (SCM_NIMP (from_pt) && SCM_OPPORTP (from_pt), from_pt, SCM_ARG2, s_sys_redirect_port); oldfd = fileno ((FILE *)SCM_STREAM (into_pt)); if (oldfd == -1) SCM_SYSERROR (s_sys_redirect_port); newfd = fileno ((FILE *)SCM_STREAM (from_pt)); if (newfd == -1) SCM_SYSERROR (s_sys_redirect_port); SCM_SYSCALL (ans = dup2 (oldfd, newfd)); if (ans == -1) SCM_SYSERROR (s_sys_redirect_port); SCM_ALLOW_INTS; return SCM_UNSPECIFIED; } SCM_PROC (s_sys_fileno, "fileno", 1, 0, 0, scm_sys_fileno); #ifdef __STDC__ SCM scm_sys_fileno (SCM port) #else SCM scm_sys_fileno (port) SCM port; #endif { int fd; SCM_ASSERT (SCM_NIMP (port) && SCM_OPFPORTP (port), port, SCM_ARG1, s_sys_fileno); fd = fileno ((FILE *)SCM_STREAM (port)); if (fd == -1) SCM_SYSERROR (s_sys_fileno); return SCM_MAKINUM (fd); } SCM_PROC (s_sys_isatty, "isatty?", 1, 0, 0, scm_sys_isatty_p); #ifdef __STDC__ SCM scm_sys_isatty_p (SCM port) #else SCM scm_sys_isatty_p (port) SCM port; #endif { int rv; SCM_ASSERT (SCM_NIMP (port) && SCM_OPFPORTP (port), port, SCM_ARG1, s_sys_isatty); rv = fileno ((FILE *)SCM_STREAM (port)); if (rv == -1) SCM_SYSERROR (s_sys_isatty); rv = isatty (rv); return rv ? SCM_BOOL_T : SCM_BOOL_F; } SCM_PROC (s_sys_fdopen, "fdopen", 2, 0, 0, scm_sys_fdopen); #ifdef __STDC__ SCM scm_sys_fdopen (SCM fdes, SCM modes) #else SCM scm_sys_fdopen (fdes, modes) SCM fdes; SCM modes; #endif { FILE *f; SCM port; struct scm_port_table * pt; SCM_ASSERT (SCM_INUMP (fdes), fdes, SCM_ARG1, s_sys_fdopen); SCM_ASSERT (SCM_NIMP (modes) && SCM_STRINGP (modes), modes, SCM_ARG2, s_sys_fdopen); SCM_NEWCELL (port); SCM_DEFER_INTS; f = fdopen (SCM_INUM (fdes), SCM_CHARS (modes)); if (f == NULL) SCM_SYSERROR (s_sys_fdopen); pt = scm_add_to_port_table (port); SCM_SETPTAB_ENTRY (port, pt); if (SCM_BUF0 & (SCM_CAR (port) = scm_tc16_fport | scm_mode_bits (SCM_CHARS (modes)))) scm_setbuf0 (port); SCM_SETSTREAM (port, (SCM)f); SCM_ALLOW_INTS; return port; } /* Move a port's underlying file descriptor to a given value. * Returns #f if fdes is already the given value. * #t if fdes moved. * MOVE->FDES is implemented in Scheme and calls this primitive. */ SCM_PROC (s_sys_primitive_move_to_fdes, "primitive-move->fdes", 2, 0, 0, scm_sys_primitive_move_to_fdes); #ifdef __STDC__ SCM scm_sys_primitive_move_to_fdes (SCM port, SCM fd) #else SCM scm_sys_primitive_move_to_fdes (port, fd) SCM port; SCM fd; #endif { FILE *stream; int old_fd; int new_fd; int rv; SCM_ASSERT (SCM_NIMP (port) && SCM_OPFPORTP (port), port, SCM_ARG1, s_sys_primitive_move_to_fdes); SCM_ASSERT (SCM_INUMP (fd), fd, SCM_ARG2, s_sys_primitive_move_to_fdes); SCM_DEFER_INTS; stream = (FILE *)SCM_STREAM (port); old_fd = fileno (stream); new_fd = SCM_INUM (fd); if (old_fd == new_fd) { SCM_ALLOW_INTS; return SCM_BOOL_F; } scm_evict_ports (new_fd); rv = dup2 (old_fd, new_fd); if (rv == -1) SCM_SYSERROR (s_sys_primitive_move_to_fdes); scm_setfileno (stream, new_fd); SCM_SYSCALL (close (old_fd)); SCM_ALLOW_INTS; return SCM_BOOL_T; } #ifdef __STDC__ void scm_setfileno (FILE *fs, int fd) #else void scm_setfileno (fs, fd) FILE *fs; int fd; #endif { #ifdef SET_FILE_FD_FIELD SET_FILE_FD_FIELD(fs, fd); #else Configure could not guess the name of the correct field in a FILE *. This function needs to be ported to your system. SET_FILE_FD_FIELD should change the descriptor refered to by a stdio stream, and nothing else. The way to port this file is to add cases to configure.in. Search that file for "SET_FILE_FD_FIELD" and follow the examples there. #endif } /* Move ports with the specified file descriptor to new descriptors, * reseting the revealed count to 0. * Should be called with SCM_DEFER_INTS active. */ #ifdef __STDC__ void scm_evict_ports (int fd) #else void scm_evict_ports (fd) int fd; #endif { int i; for (i = 0; i < scm_port_table_size; i++) { if (SCM_FPORTP (scm_port_table[i]->port) && fileno ((FILE *)SCM_STREAM (scm_port_table[i]->port)) == fd) { scm_setfileno ((FILE *)SCM_STREAM (scm_port_table[i]->port), dup (fd)); scm_set_port_revealed_x (scm_port_table[i]->port, SCM_MAKINUM (0)); } } } /* Return a list of ports using a given file descriptor. */ SCM_PROC(s_fdes_to_ports, "fdes->ports", 1, 0, 0, scm_fdes_to_ports); #ifdef __STDC__ SCM scm_fdes_to_ports (SCM fd) #else SCM scm_fdes_to_ports (fd) SCM fd; #endif { SCM result = SCM_EOL; int int_fd; int i; SCM_ASSERT (SCM_INUMP (fd), fd, SCM_ARG1, s_fdes_to_ports); int_fd = SCM_INUM (fd); SCM_DEFER_INTS; for (i = 0; i < scm_port_table_size; i++) { if (SCM_FPORTP (scm_port_table[i]->port) && fileno ((FILE *)SCM_STREAM (scm_port_table[i]->port)) == int_fd) result = scm_cons (scm_port_table[i]->port, result); } SCM_ALLOW_INTS; return result; } #ifdef __STDC__ void scm_init_ioext (void) #else void scm_init_ioext () #endif { /* fseek() symbols. */ scm_sysintern ("SEEK_SET", SCM_MAKINUM (SEEK_SET)); scm_sysintern ("SEEK_CUR", SCM_MAKINUM (SEEK_CUR)); scm_sysintern ("SEEK_END", SCM_MAKINUM (SEEK_END)); /* File type/permission bits. */ #ifdef S_IRUSR scm_sysintern ("S_IRUSR", SCM_MAKINUM (S_IRUSR)); #endif #ifdef S_IWUSR scm_sysintern ("S_IWUSR", SCM_MAKINUM (S_IWUSR)); #endif #ifdef S_IXUSR scm_sysintern ("S_IXUSR", SCM_MAKINUM (S_IXUSR)); #endif #ifdef S_IRWXU scm_sysintern ("S_IRWXU", SCM_MAKINUM (S_IRWXU)); #endif #ifdef S_IRGRP scm_sysintern ("S_IRGRP", SCM_MAKINUM (S_IRGRP)); #endif #ifdef S_IWGRP scm_sysintern ("S_IWGRP", SCM_MAKINUM (S_IWGRP)); #endif #ifdef S_IXGRP scm_sysintern ("S_IXGRP", SCM_MAKINUM (S_IXGRP)); #endif #ifdef S_IRWXG scm_sysintern ("S_IRWXG", SCM_MAKINUM (S_IRWXG)); #endif #ifdef S_IROTH scm_sysintern ("S_IROTH", SCM_MAKINUM (S_IROTH)); #endif #ifdef S_IWOTH scm_sysintern ("S_IWOTH", SCM_MAKINUM (S_IWOTH)); #endif #ifdef S_IXOTH scm_sysintern ("S_IXOTH", SCM_MAKINUM (S_IXOTH)); #endif #ifdef S_IRWXO scm_sysintern ("S_IRWXO", SCM_MAKINUM (S_IRWXO)); #endif #ifdef S_ISUID scm_sysintern ("S_ISUID", SCM_MAKINUM (S_ISUID)); #endif #ifdef S_ISGID scm_sysintern ("S_ISGID", SCM_MAKINUM (S_ISGID)); #endif #ifdef S_ISVTX scm_sysintern ("S_ISVTX", SCM_MAKINUM (S_ISVTX)); #endif #ifdef S_IFMT scm_sysintern ("S_IFMT", SCM_MAKINUM (S_IFMT)); #endif #ifdef S_IFDIR scm_sysintern ("S_IFDIR", SCM_MAKINUM (S_IFDIR)); #endif #ifdef S_IFCHR scm_sysintern ("S_IFCHR", SCM_MAKINUM (S_IFCHR)); #endif #ifdef S_IFBLK scm_sysintern ("S_IFBLK", SCM_MAKINUM (S_IFBLK)); #endif #ifdef S_IFREG scm_sysintern ("S_IFREG", SCM_MAKINUM (S_IFREG)); #endif #ifdef S_IFLNK scm_sysintern ("S_IFLNK", SCM_MAKINUM (S_IFLNK)); #endif #ifdef S_IFSOCK scm_sysintern ("S_IFSOCK", SCM_MAKINUM (S_IFSOCK)); #endif #ifdef S_IFIFO scm_sysintern ("S_IFIFO", SCM_MAKINUM (S_IFIFO)); #endif #include "ioext.x" }