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guile/libguile/filesys.c
Gary Houston 02b754d3a6 make C system primitives throw exceptions
1996-08-02 23:26:33 +00:00

1303 lines
29 KiB
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/* Copyright (C) 1996 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 "_scm.h"
#ifdef TIME_WITH_SYS_TIME
# include <sys/time.h>
# include <time.h>
#else
# if HAVE_SYS_TIME_H
# include <sys/time.h>
# else
# include <time.h>
# endif
#endif
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifdef HAVE_SYS_SELECT_H
#include <sys/select.h>
#endif
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <pwd.h>
#ifdef FD_SET
#define SELECT_TYPE fd_set
#define SELECT_SET_SIZE FD_SETSIZE
#else /* no FD_SET */
/* Define the macros to access a single-int bitmap of descriptors. */
#define SELECT_SET_SIZE 32
#define SELECT_TYPE int
#define FD_SET(n, p) (*(p) |= (1 << (n)))
#define FD_CLR(n, p) (*(p) &= ~(1 << (n)))
#define FD_ISSET(n, p) (*(p) & (1 << (n)))
#define FD_ZERO(p) (*(p) = 0)
#endif /* no FD_SET */
#if HAVE_DIRENT_H
# include <dirent.h>
# define NAMLEN(dirent) strlen((dirent)->d_name)
#else
# define dirent direct
# define NAMLEN(dirent) (dirent)->d_namlen
# if HAVE_SYS_NDIR_H
# include <sys/ndir.h>
# endif
# if HAVE_SYS_DIR_H
# include <sys/dir.h>
# endif
# if HAVE_NDIR_H
# include <ndir.h>
# endif
#endif
#ifdef O_CREAT
SCM_CONST_LONG (scm_O_CREAT, "O_CREAT", O_CREAT);
#endif
#ifdef O_EXCL
SCM_CONST_LONG (scm_O_EXCL, "O_EXCL", O_EXCL);
#endif
#ifdef O_NOCTTY
SCM_CONST_LONG (scm_O_NOCTTY, "O_NOCTTY", O_NOCTTY);
#endif
#ifdef O_TRUNC
SCM_CONST_LONG (scm_O_TRUNC, "O_TRUNC", O_TRUNC);
#endif
#ifdef O_APPEND
SCM_CONST_LONG (scm_O_APPEND, "O_APPEND", O_APPEND);
#endif
#ifdef O_NONBLOCK
SCM_CONST_LONG (scm_O_NONBLOCK, "O_NONBLOCK", O_NONBLOCK);
#endif
#ifdef O_NDELAY
SCM_CONST_LONG (scm_O_NDELAY, "O_NDELAY", O_NDELAY);
#endif
#ifdef O_SYNC
SCM_CONST_LONG (scm_O_SYNC, "O_SYNC", O_SYNC);
#endif
/* {Permissions}
*/
SCM_PROC (s_sys_chown, "chown", 3, 0, 0, scm_sys_chown);
#ifdef __STDC__
SCM
scm_sys_chown (SCM path, SCM owner, SCM group)
#else
SCM
scm_sys_chown (path, owner, group)
SCM path;
SCM owner;
SCM group;
#endif
{
int val;
SCM_ASSERT (SCM_NIMP (path) && SCM_ROSTRINGP (path), path, SCM_ARG1, s_sys_chown);
if (SCM_SUBSTRP (path))
path = scm_makfromstr (SCM_ROCHARS (path), SCM_ROLENGTH (path), 0);
SCM_ASSERT (SCM_INUMP (owner), owner, SCM_ARG2, s_sys_chown);
SCM_ASSERT (SCM_INUMP (group), group, SCM_ARG3, s_sys_chown);
SCM_SYSCALL (val = chown (SCM_ROCHARS (path),
SCM_INUM (owner), SCM_INUM (group)));
if (val != 0)
SCM_SYSERROR (s_sys_chown);
return SCM_UNSPECIFIED;
}
SCM_PROC (s_sys_chmod, "chmod", 2, 0, 0, scm_sys_chmod);
#ifdef __STDC__
SCM
scm_sys_chmod (SCM port_or_path, SCM mode)
#else
SCM
scm_sys_chmod (port_or_path, mode)
SCM port_or_path;
SCM mode;
#endif
{
int rv;
SCM_ASSERT (SCM_INUMP (mode), mode, SCM_ARG2, s_sys_chmod);
SCM_ASSERT (SCM_NIMP (port_or_path), port_or_path, SCM_ARG1, s_sys_chmod);
if (SCM_STRINGP (port_or_path))
SCM_SYSCALL (rv = chmod (SCM_CHARS (port_or_path), SCM_INUM (mode)));
else
{
SCM_ASSERT (SCM_OPFPORTP (port_or_path), port_or_path, SCM_ARG1, s_sys_chmod);
rv = fileno ((FILE *)SCM_STREAM (port_or_path));
if (rv != -1)
SCM_SYSCALL (rv = fchmod (rv, SCM_INUM (mode)));
}
if (rv != 0)
SCM_SYSERROR (s_sys_chmod);
return SCM_UNSPECIFIED;
}
SCM_PROC (s_umask, "umask", 0, 1, 0, scm_umask);
#ifdef __STDC__
SCM
scm_umask (SCM mode)
#else
SCM
scm_umask (mode)
SCM mode;
#endif
{
mode_t mask;
if (SCM_UNBNDP (mode))
{
mask = umask (0);
umask (mask);
}
else
{
SCM_ASSERT (SCM_INUMP (mode), mode, SCM_ARG1, s_umask);
mask = umask (SCM_INUM (mode));
}
return SCM_MAKINUM (mask);
}
/* {File Descriptors}
*/
long scm_tc16_fd;
#ifdef __STDC__
static int
scm_fd_print (SCM sexp, SCM port, int writing)
#else
static int
scm_fd_print (sexp, port, writing)
SCM sexp;
SCM port;
int writing;
#endif
{
scm_gen_puts (scm_regular_string, "#<fd ", port);
scm_intprint (SCM_CDR (sexp), 10, port);
scm_gen_puts (scm_regular_string, ">", port);
return 1;
}
#ifdef __STDC__
static scm_sizet
scm_fd_free (SCM p)
#else
static scm_sizet
scm_fd_free (p)
SCM p;
#endif
{
SCM flags;
flags = SCM_FD_FLAGS (p);
if ((scm_close_fd_on_gc & flags) && (scm_fd_is_open & flags))
{
SCM_SYSCALL( close (SCM_FD (p)) );
}
return 0;
}
static scm_smobfuns fd_smob = {scm_mark0, scm_fd_free, scm_fd_print, 0};
#ifdef __STDC__
SCM
scm_intern_fd (int fd, int flags)
#else
SCM
scm_intern_fd (fd, flags)
int fd;
int flags;
#endif
{
SCM it;
SCM_NEWCELL (it);
SCM_REDEFER_INTS;
SCM_SETCAR (it, (scm_tc16_fd | (flags << 16)));
SCM_SETCDR (it, (SCM)fd);
SCM_REALLOW_INTS;
return it;
}
SCM_PROC (s_sys_open, "open", 3, 0, 0, scm_sys_open);
#ifdef __STDC__
SCM
scm_sys_open (SCM path, SCM flags, SCM mode)
#else
SCM
scm_sys_open (path, flags, mode)
SCM path;
SCM flags;
SCM mode;
#endif
{
int fd;
SCM sfd;
SCM_ASSERT (SCM_NIMP (path) && SCM_ROSTRINGP (path), path, SCM_ARG1, s_sys_open);
SCM_ASSERT (SCM_INUMP (flags), flags, SCM_ARG2, s_sys_open);
SCM_ASSERT (SCM_INUMP (mode), mode, SCM_ARG3, s_sys_open);
if (SCM_SUBSTRP (path))
path = scm_makfromstr (SCM_ROCHARS (path), SCM_ROLENGTH (path), 0);
SCM_DEFER_INTS;
SCM_SYSCALL ( fd = open (SCM_ROCHARS (path), SCM_INUM (flags), SCM_INUM (mode)) );
if (fd == -1)
SCM_SYSERROR (s_sys_open);
sfd = scm_intern_fd (fd, scm_fd_is_open | scm_close_fd_on_gc);
SCM_ALLOW_INTS;
return scm_return_first (sfd, path);
}
SCM_PROC (s_sys_create, "create", 2, 0, 0, scm_sys_create);
#ifdef __STDC__
SCM
scm_sys_create (SCM path, SCM mode)
#else
SCM
scm_sys_create (path, mode)
SCM path;
SCM mode;
#endif
{
int fd;
SCM sfd;
SCM_ASSERT (SCM_NIMP (path) && SCM_ROSTRINGP (path), path, SCM_ARG1, s_sys_create);
SCM_ASSERT (SCM_INUMP (mode), mode, SCM_ARG2, s_sys_create);
if (SCM_SUBSTRP (path))
path = scm_makfromstr (SCM_ROCHARS (path), SCM_ROLENGTH (path), 0);
SCM_DEFER_INTS;
SCM_SYSCALL ( fd = creat (SCM_ROCHARS (path), SCM_INUM (mode)) );
if (fd == -1)
SCM_SYSERROR (s_sys_create);
sfd = scm_intern_fd (fd, scm_fd_is_open | scm_close_fd_on_gc);
SCM_ALLOW_INTS;
return scm_return_first (sfd, path);
}
SCM_PROC (s_sys_close, "close", 1, 0, 0, scm_sys_close);
#ifdef __STDC__
SCM
scm_sys_close (SCM sfd)
#else
SCM
scm_sys_close (sfd)
SCM sfd;
#endif
{
int fd;
int got;
SCM_ASSERT (SCM_NIMP (sfd) && SCM_FD_P (sfd), sfd, SCM_ARG1, s_sys_close);
fd = SCM_FD (sfd);
SCM_DEFER_INTS;
got = close (fd);
SCM_SETCAR (sfd, scm_tc16_fd);
SCM_ALLOW_INTS;
if (got == -1)
SCM_SYSERROR (s_sys_close);
return SCM_UNSPECIFIED;
}
SCM_PROC (s_sys_write_fd, "write-fd", 2, 0, 0, scm_sys_write_fd);
#ifdef __STDC__
SCM
scm_sys_write_fd (SCM sfd, SCM buf)
#else
SCM
scm_sys_write_fd (sfd, buf)
SCM sfd;
SCM buf;
#endif
{
SCM answer;
int fd;
size_t written;
SCM_ASSERT (SCM_NIMP (sfd) && SCM_FD_P (sfd), sfd, SCM_ARG1, s_sys_write_fd);
SCM_ASSERT (SCM_NIMP (buf) && SCM_ROSTRINGP (buf), buf, SCM_ARG2, s_sys_write_fd);
fd = SCM_FD (sfd);
SCM_DEFER_INTS;
written = write (fd, SCM_ROCHARS (buf), SCM_ROLENGTH (buf));
if (written == -1)
SCM_SYSERROR (s_sys_write_fd);
answer = scm_long2num (written);
SCM_ALLOW_INTS;
return scm_return_first (answer, buf);
}
SCM_PROC (s_sys_read_fd, "read-fd", 2, 2, 0, scm_sys_read_fd);
#ifdef __STDC__
SCM
scm_sys_read_fd (SCM sfd, SCM buf, SCM offset, SCM length)
#else
SCM
scm_sys_read_fd (sfd, buf, offset, length)
SCM sfd;
SCM buf;
SCM offset;
SCM length;
#endif
{
SCM answer;
int fd;
char * bytes;
int off;
int len;
size_t got;
SCM_ASSERT (SCM_NIMP (sfd) && SCM_FD_P (sfd), sfd, SCM_ARG1, s_sys_read_fd);
fd = SCM_FD (sfd);
SCM_ASSERT (SCM_NIMP (buf) && SCM_STRINGP (buf), buf, SCM_ARG2, s_sys_read_fd);
bytes = SCM_CHARS (buf);
if (SCM_UNBNDP (offset))
off = 0;
else
{
SCM_ASSERT (SCM_INUMP (offset), offset, SCM_ARG3, s_sys_read_fd);
off = SCM_INUM (offset);
}
if (SCM_UNBNDP (length))
len = SCM_LENGTH (buf);
else
{
SCM_ASSERT (SCM_INUMP (length), length, SCM_ARG3, s_sys_read_fd);
len = SCM_INUM (length);
}
SCM_DEFER_INTS;
got = read (fd, bytes + off, len);
if (got == -1)
SCM_SYSERROR (s_sys_read_fd);
answer = scm_long2num (got);
SCM_ALLOW_INTS;
return scm_return_first (answer, buf);
}
SCM_PROC (s_sys_lseek, "lseek", 2, 1, 0, scm_sys_lseek);
#ifdef __STDC__
SCM
scm_sys_lseek (SCM sfd, SCM offset, SCM whence)
#else
SCM
scm_sys_lseek (sfd, offset, whence)
SCM sfd;
SCM offset;
SCM whence;
#endif
{
SCM answer;
int fd;
long off;
int wh;
long got;
SCM_ASSERT (SCM_NIMP (sfd) && SCM_FD_P (sfd), sfd, SCM_ARG1, s_sys_lseek);
fd = SCM_FD (sfd);
off = scm_num2long (offset, (char *)SCM_ARG2, s_sys_lseek);
if (SCM_UNBNDP (whence))
wh = SEEK_SET;
else
{
SCM_ASSERT (SCM_INUMP (whence), whence, SCM_ARG3, s_sys_lseek);
wh = SCM_INUM (whence);
}
SCM_DEFER_INTS;
SCM_SYSCALL (got = lseek (fd, off, wh));
if (got == -1)
SCM_SYSERROR (s_sys_lseek);
answer = scm_long2num (got);
SCM_ALLOW_INTS;
return answer;
}
SCM_PROC (s_sys_dup, "dup", 1, 1, 0, scm_sys_dup);
#ifdef __STDC__
SCM
scm_sys_dup (SCM oldfd, SCM newfd)
#else
SCM
scm_sys_dup (oldfd, newfd)
SCM oldfd;
SCM newfd;
#endif
{
SCM answer;
int fd;
int nfd;
int (*fn)();
SCM_ASSERT (SCM_NIMP (oldfd) && SCM_FD_P (oldfd), oldfd, SCM_ARG1, s_sys_dup);
SCM_ASSERT (SCM_UNBNDP (newfd) || SCM_INUMP (newfd), newfd, SCM_ARG2, s_sys_dup);
fd = SCM_FD (oldfd);
nfd = (SCM_INUMP (newfd) ? SCM_INUM (newfd) : -1);
SCM_DEFER_INTS;
fn = ((nfd == -1) ? (int (*)())dup : (int (*)())dup2);
nfd = fn (fd, nfd);
if (nfd == -1)
SCM_SYSERROR (s_sys_dup);
answer = SCM_MAKINUM (nfd);
SCM_ALLOW_INTS;
return answer;
}
/* {Files}
*/
#ifdef __STDC__
static SCM
scm_stat2scm (struct stat *stat_temp)
#else
static SCM
scm_stat2scm (stat_temp)
struct stat *stat_temp;
#endif
{
SCM ans = scm_make_vector (SCM_MAKINUM (13), SCM_UNSPECIFIED, SCM_BOOL_F);
SCM *ve = SCM_VELTS (ans);
ve[0] = scm_ulong2num ((unsigned long) stat_temp->st_dev);
ve[1] = scm_ulong2num ((unsigned long) stat_temp->st_ino);
ve[2] = scm_ulong2num ((unsigned long) stat_temp->st_mode);
ve[3] = scm_ulong2num ((unsigned long) stat_temp->st_nlink);
ve[4] = scm_ulong2num ((unsigned long) stat_temp->st_uid);
ve[5] = scm_ulong2num ((unsigned long) stat_temp->st_gid);
#ifdef HAVE_ST_RDEV
ve[6] = scm_ulong2num ((unsigned long) stat_temp->st_rdev);
#else
ve[6] = SCM_BOOL_F;
#endif
ve[7] = scm_ulong2num ((unsigned long) stat_temp->st_size);
ve[8] = scm_ulong2num ((unsigned long) stat_temp->st_atime);
ve[9] = scm_ulong2num ((unsigned long) stat_temp->st_mtime);
ve[10] = scm_ulong2num ((unsigned long) stat_temp->st_ctime);
#ifdef HAVE_ST_BLKSIZE
ve[11] = scm_ulong2num ((unsigned long) stat_temp->st_blksize);
#else
ve[11] = scm_ulong2num (4096L);
#endif
#ifdef HAVE_ST_BLOCKS
ve[12] = scm_ulong2num ((unsigned long) stat_temp->st_blocks);
#else
ve[12] = SCM_BOOL_F;
#endif
return ans;
}
SCM_PROC (s_sys_stat, "stat", 1, 0, 0, scm_sys_stat);
#ifdef __STDC__
SCM
scm_sys_stat (SCM fd_or_path)
#else
SCM
scm_sys_stat (fd_or_path)
SCM fd_or_path;
#endif
{
int rv;
struct stat stat_temp;
if (SCM_INUMP (fd_or_path))
{
SCM_ASSERT (SCM_OPFPORTP (fd_or_path), fd_or_path, SCM_ARG1, s_sys_stat);
rv = SCM_INUM (fd_or_path);
SCM_SYSCALL (rv = fstat (rv, &stat_temp));
}
else if (SCM_NIMP (fd_or_path) && SCM_FD_P (fd_or_path))
{
rv = SCM_FD (fd_or_path);
SCM_SYSCALL (rv = fstat (rv, &stat_temp));
}
else
{
SCM_ASSERT (SCM_NIMP (fd_or_path), fd_or_path, SCM_ARG1, s_sys_stat);
SCM_ASSERT (SCM_ROSTRINGP (fd_or_path), fd_or_path, SCM_ARG1, s_sys_stat);
if (SCM_ROSTRINGP (fd_or_path))
{
if (SCM_SUBSTRP (fd_or_path))
fd_or_path = scm_makfromstr (SCM_ROCHARS (fd_or_path), SCM_ROLENGTH (fd_or_path), 0);
SCM_SYSCALL (rv = stat (SCM_CHARS (fd_or_path), &stat_temp));
}
}
if (rv != 0)
SCM_SYSERROR (s_sys_stat);
return scm_stat2scm (&stat_temp);
}
/* {Modifying Directories}
*/
SCM_PROC (s_sys_link, "link", 2, 0, 0, scm_sys_link);
#ifdef __STDC__
SCM
scm_sys_link (SCM oldpath, SCM newpath)
#else
SCM
scm_sys_link (oldpath, newpath)
SCM oldpath;
SCM newpath;
#endif
{
int val;
SCM_ASSERT (SCM_NIMP (oldpath) && SCM_ROSTRINGP (oldpath), oldpath, SCM_ARG1, s_sys_link);
if (SCM_SUBSTRP (oldpath))
oldpath = scm_makfromstr (SCM_ROCHARS (oldpath), SCM_ROLENGTH (oldpath), 0);
SCM_ASSERT (SCM_NIMP (newpath) && SCM_ROSTRINGP (newpath), newpath, SCM_ARG2, s_sys_link);
if (SCM_SUBSTRP (newpath))
newpath = scm_makfromstr (SCM_ROCHARS (newpath), SCM_ROLENGTH (newpath), 0);
SCM_SYSCALL (val = link (SCM_ROCHARS (oldpath), SCM_ROCHARS (newpath)));
if (val != 0)
SCM_SYSERROR (s_sys_link);
return SCM_UNSPECIFIED;
}
SCM_PROC (s_sys_rename, "rename-file", 2, 0, 0, scm_sys_rename);
#ifdef __STDC__
SCM
scm_sys_rename (SCM oldname, SCM newname)
#else
SCM
scm_sys_rename (oldname, newname)
SCM oldname;
SCM newname;
#endif
{
int rv;
SCM_ASSERT (SCM_NIMP (oldname) && SCM_STRINGP (oldname), oldname, SCM_ARG1, s_sys_rename);
SCM_ASSERT (SCM_NIMP (newname) && SCM_STRINGP (newname), newname, SCM_ARG2, s_sys_rename);
#ifdef HAVE_RENAME
SCM_SYSCALL (rv = rename (SCM_CHARS (oldname), SCM_CHARS (newname)));
if (rv != 0)
SCM_SYSERROR (s_sys_rename);
return SCM_UNSPECIFIED;
#else
SCM_DEFER_INTS;
SCM_SYSCALL (rv = link (SCM_CHARS (oldname), SCM_CHARS (newname)));
if (rv == 0)
{
SCM_SYSCALL (rv = unlink (SCM_CHARS (oldname)));;
if (rv != 0)
/* unlink failed. remove new name */
SCM_SYSCALL (unlink (SCM_CHARS (newname)));
}
SCM_ALLOW_INTS;
if (rv != 0)
SCM_SYSERROR (s_sys_rename);
return SCM_UNSPECIFIED;
#endif
}
SCM_PROC (s_sys_mkdir, "mkdir", 1, 1, 0, scm_sys_mkdir);
#ifdef __STDC__
SCM
scm_sys_mkdir (SCM path, SCM mode)
#else
SCM
scm_sys_mkdir (path, mode)
SCM path;
SCM mode;
#endif
{
#ifdef HAVE_MKDIR
int rv;
mode_t mask;
SCM_ASSERT (SCM_NIMP (path) && SCM_STRINGP (path), path, SCM_ARG1, s_sys_mkdir);
if (SCM_UNBNDP (mode))
{
mask = umask (0);
umask (mask);
SCM_SYSCALL (rv = mkdir (SCM_CHARS (path), 0777 ^ mask));
}
else
{
SCM_ASSERT (SCM_INUMP (mode), mode, SCM_ARG2, s_sys_mkdir);
SCM_SYSCALL (rv = mkdir (SCM_CHARS (path), SCM_INUM (mode)));
}
if (rv != 0)
SCM_SYSERROR (s_sys_mkdir);
return SCM_UNSPECIFIED;
#else
SCM_SYSMISSING (s_sys_mkdir);
/* not reached. */
return SCM_BOOL_F;
#endif
}
SCM_PROC (s_sys_rmdir, "rmdir", 1, 0, 0, scm_sys_rmdir);
#ifdef __STDC__
SCM
scm_sys_rmdir (SCM path)
#else
SCM
scm_sys_rmdir (path)
SCM path;
#endif
{
#ifdef HAVE_RMDIR
int val;
SCM_ASSERT (SCM_NIMP (path) && SCM_STRINGP (path), path, SCM_ARG1, s_sys_rmdir);
SCM_SYSCALL (val = rmdir (SCM_CHARS (path)));
if (val != 0)
SCM_SYSERROR (s_sys_rmdir);
return SCM_UNSPECIFIED;
#else
SCM_SYSMISSING (s_sys_rmdir);
/* not reached. */
return SCM_BOOL_F;
#endif
}
/* {Examining Directories}
*/
long scm_tc16_dir;
SCM_PROC (s_sys_opendir, "opendir", 1, 0, 0, scm_sys_opendir);
#ifdef __STDC__
SCM
scm_sys_opendir (SCM dirname)
#else
SCM
scm_sys_opendir (dirname)
SCM dirname;
#endif
{
DIR *ds;
SCM dir;
SCM_ASSERT (SCM_NIMP (dirname) && SCM_STRINGP (dirname), dirname, SCM_ARG1, s_sys_opendir);
SCM_NEWCELL (dir);
SCM_DEFER_INTS;
SCM_SYSCALL (ds = opendir (SCM_CHARS (dirname)));
if (ds == NULL)
SCM_SYSERROR (s_sys_opendir);
SCM_CAR (dir) = scm_tc16_dir | SCM_OPN;
SCM_SETCDR (dir, ds);
SCM_ALLOW_INTS;
return dir;
}
SCM_PROC (s_sys_readdir, "readdir", 1, 0, 0, scm_sys_readdir);
#ifdef __STDC__
SCM
scm_sys_readdir (SCM port)
#else
SCM
scm_sys_readdir (port)
SCM port;
#endif
{
struct dirent *rdent;
SCM_DEFER_INTS;
SCM_ASSERT (SCM_NIMP (port) && SCM_OPDIRP (port), port, SCM_ARG1, s_sys_readdir);
errno = 0;
SCM_SYSCALL (rdent = readdir ((DIR *) SCM_CDR (port)));
SCM_ALLOW_INTS;
if (errno != 0)
SCM_SYSERROR (s_sys_readdir);
return (rdent ? scm_makfromstr (rdent->d_name, NAMLEN (rdent), 0)
: SCM_EOF_VAL);
}
SCM_PROC (s_rewinddir, "rewinddir", 1, 0, 0, scm_rewinddir);
#ifdef __STDC__
SCM
scm_rewinddir (SCM port)
#else
SCM
scm_rewinddir (port)
SCM port;
#endif
{
SCM_ASSERT (SCM_NIMP (port) && SCM_OPDIRP (port), port, SCM_ARG1, s_rewinddir);
rewinddir ((DIR *) SCM_CDR (port));
return SCM_UNSPECIFIED;
}
SCM_PROC (s_sys_closedir, "closedir", 1, 0, 0, scm_sys_closedir);
#ifdef __STDC__
SCM
scm_sys_closedir (SCM port)
#else
SCM
scm_sys_closedir (port)
SCM port;
#endif
{
int sts;
SCM_ASSERT (SCM_NIMP (port) && SCM_DIRP (port), port, SCM_ARG1, s_sys_closedir);
SCM_DEFER_INTS;
if (SCM_CLOSEDP (port))
{
SCM_ALLOW_INTS;
return SCM_UNSPECIFIED;
}
SCM_SYSCALL (sts = closedir ((DIR *) SCM_CDR (port)));
if (sts != 0)
SCM_SYSERROR (s_sys_closedir);
SCM_CAR (port) = scm_tc16_dir;
SCM_ALLOW_INTS;
return SCM_UNSPECIFIED;
}
#ifdef __STDC__
static int
scm_dir_print (SCM sexp, SCM port, int writing)
#else
static int
scm_dir_print (sexp, port, writing)
SCM sexp;
SCM port;
int writing;
#endif
{
scm_prinport (sexp, port, "directory");
return 1;
}
#ifdef __STDC__
static scm_sizet
scm_dir_free (SCM p)
#else
static scm_sizet
scm_dir_free (p)
SCM p;
#endif
{
if (SCM_OPENP (p))
closedir ((DIR *) SCM_CDR (p));
return 0;
}
static scm_smobfuns dir_smob = {scm_mark0, scm_dir_free, scm_dir_print, 0};
/* {Navigating Directories}
*/
SCM_PROC (s_sys_chdir, "chdir", 1, 0, 0, scm_sys_chdir);
#ifdef __STDC__
SCM
scm_sys_chdir (SCM str)
#else
SCM
scm_sys_chdir (str)
SCM str;
#endif
{
int ans;
SCM_ASSERT (SCM_NIMP (str) && SCM_STRINGP (str), str, SCM_ARG1, s_sys_chdir);
SCM_SYSCALL (ans = chdir (SCM_CHARS (str)));
if (ans != 0)
SCM_SYSERROR (s_sys_chdir);
return SCM_UNSPECIFIED;
}
SCM_PROC (s_sys_getcwd, "getcwd", 0, 0, 0, scm_sys_getcwd);
#ifdef __STDC__
SCM
scm_sys_getcwd (void)
#else
SCM
scm_sys_getcwd ()
#endif
{
#ifdef HAVE_GETCWD
char *rv;
scm_sizet size = 100;
char *wd;
SCM result;
SCM_DEFER_INTS;
wd = scm_must_malloc (size, s_sys_getcwd);
while ((rv = getcwd (wd, size)) == 0 && errno == ERANGE)
{
scm_must_free (wd);
size *= 2;
wd = scm_must_malloc (size, s_sys_getcwd);
}
if (rv == 0)
SCM_SYSERROR (s_sys_getcwd);
result = scm_makfromstr (wd, strlen (wd), 0);
scm_must_free (wd);
SCM_ALLOW_INTS;
return result;
#else
SCM_SYSMISSING (s_sys_getcwd);
/* not reached. */
return SCM_BOOL_F;
#endif
}
#ifdef __STDC__
static void
fill_select_type (SELECT_TYPE * set, SCM list)
#else
static void
fill_select_type (set, list)
SELECT_TYPE * set;
SCM list;
#endif
{
while (list != SCM_EOL)
{
if ( SCM_NIMP (SCM_CAR (list))
&& (scm_tc16_fport == SCM_TYP16 (SCM_CAR (list)))
&& SCM_OPPORTP (SCM_CAR (list)))
FD_SET (fileno ((FILE *)SCM_STREAM (SCM_CAR (list))), set);
else if (SCM_INUMP (SCM_CAR (list)))
FD_SET (SCM_INUM (SCM_CAR (list)), set);
else if (SCM_NIMP (SCM_CAR (list)) && SCM_FD_P (SCM_CAR (list)))
FD_SET (SCM_FD (SCM_CAR (list)), set);
list = SCM_CDR (list);
}
}
#ifdef __STDC__
static SCM
retrieve_select_type (SELECT_TYPE * set, SCM list)
#else
static SCM
retrieve_select_type (set, list)
SELECT_TYPE * set;
SCM list;
#endif
{
SCM answer;
answer = SCM_EOL;
while (list != SCM_EOL)
{
if ( SCM_NIMP (SCM_CAR (list))
&& (scm_tc16_fport == SCM_TYP16 (SCM_CAR (list)))
&& SCM_OPPORTP (SCM_CAR (list)))
{
if (FD_ISSET (fileno ((FILE *)SCM_STREAM (SCM_CAR (list))), set))
answer = scm_cons (SCM_CAR (list), answer);
}
else if (SCM_INUMP (SCM_CAR (list)))
{
if (FD_ISSET (SCM_INUM (SCM_CAR (list)), set))
answer = scm_cons (SCM_CAR (list), answer);
}
else if (SCM_NIMP (SCM_CAR (list)) && SCM_FD_P (SCM_CAR (list)))
{
if (FD_ISSET (SCM_FD (SCM_CAR (list)), set))
answer = scm_cons (SCM_CAR (list), answer);
}
list = SCM_CDR (list);
}
return answer;
}
SCM_PROC (s_sys_select, "select", 3, 2, 0, scm_sys_select);
#ifdef __STDC__
SCM
scm_sys_select (SCM reads, SCM writes, SCM excepts, SCM secs, SCM msecs)
#else
SCM
scm_sys_select (reads, writes, excepts, secs, msecs)
SCM reads;
SCM writes;
SCM excepts;
SCM secs;
SCM msecs;
#endif
{
#ifdef HAVE_SELECT
struct timeval timeout;
struct timeval * time_p;
SELECT_TYPE read_set;
SELECT_TYPE write_set;
SELECT_TYPE except_set;
int sreturn;
SCM_ASSERT (-1 < scm_ilength (reads), reads, SCM_ARG1, s_sys_select);
SCM_ASSERT (-1 < scm_ilength (writes), reads, SCM_ARG1, s_sys_select);
SCM_ASSERT (-1 < scm_ilength (excepts), reads, SCM_ARG1, s_sys_select);
FD_ZERO (&read_set);
FD_ZERO (&write_set);
FD_ZERO (&except_set);
fill_select_type (&read_set, reads);
fill_select_type (&write_set, writes);
fill_select_type (&except_set, excepts);
if (SCM_UNBNDP (secs))
time_p = 0;
else
{
SCM_ASSERT (SCM_INUMP (secs), secs, SCM_ARG4, s_sys_select);
if (SCM_UNBNDP (msecs))
msecs = SCM_INUM0;
else
SCM_ASSERT (SCM_INUMP (msecs), msecs, SCM_ARG5, s_sys_select);
timeout.tv_sec = SCM_INUM (secs);
timeout.tv_usec = 1000 * SCM_INUM (msecs);
time_p = &timeout;
}
SCM_DEFER_INTS;
sreturn = select (SELECT_SET_SIZE,
&read_set, &write_set, &except_set, time_p);
SCM_ALLOW_INTS;
if (sreturn < 0)
SCM_SYSERROR (s_sys_select);
return scm_listify (retrieve_select_type (&read_set, reads),
retrieve_select_type (&write_set, writes),
retrieve_select_type (&except_set, excepts),
SCM_UNDEFINED);
#else
SCM_SYSMISSING (s_sys_select);
/* not reached. */
return SCM_BOOL_F;
#endif
}
/* {Symbolic Links}
*/
SCM_PROC (s_sys_symlink, "symlink", 2, 0, 0, scm_sys_symlink);
#ifdef __STDC__
SCM
scm_sys_symlink(SCM oldpath, SCM newpath)
#else
SCM
scm_sys_symlink(oldpath, newpath)
SCM oldpath;
SCM newpath;
#endif
{
#ifdef HAVE_SYMLINK
int val;
SCM_ASSERT(SCM_NIMP(oldpath) && SCM_STRINGP(oldpath), oldpath, SCM_ARG1, s_sys_symlink);
SCM_ASSERT(SCM_NIMP(newpath) && SCM_STRINGP(newpath), newpath, SCM_ARG2, s_sys_symlink);
SCM_SYSCALL (val = symlink(SCM_CHARS(oldpath), SCM_CHARS(newpath)));
if (val != 0)
SCM_SYSERROR (s_sys_symlink);
return SCM_UNSPECIFIED;
#else
SCM_SYSMISSING (s_sys_symlink);
/* not reached. */
return SCM_BOOL_F;
#endif
}
SCM_PROC (s_sys_readlink, "readlink", 1, 0, 0, scm_sys_readlink);
#ifdef __STDC__
SCM
scm_sys_readlink(SCM path)
#else
SCM
scm_sys_readlink(path)
SCM path;
#endif
{
#ifdef HAVE_READLINK
scm_sizet rv;
scm_sizet size = 100;
char *buf;
SCM result;
SCM_ASSERT (SCM_NIMP (path) && SCM_STRINGP (path), path, (char *) SCM_ARG1, s_sys_readlink);
SCM_DEFER_INTS;
buf = scm_must_malloc (size, s_sys_readlink);
while ((rv = readlink (SCM_CHARS (path), buf, (scm_sizet) size)) == size)
{
scm_must_free (buf);
size *= 2;
buf = scm_must_malloc (size, s_sys_readlink);
}
if (rv == -1)
SCM_SYSERROR (s_sys_readlink);
result = scm_makfromstr (buf, rv, 0);
scm_must_free (buf);
SCM_ALLOW_INTS;
return result;
#else
SCM_SYSMISSING (s_sys_readlink);
/* not reached. */
return SCM_BOOL_F;
#endif
}
SCM_PROC (s_sys_lstat, "lstat", 1, 0, 0, scm_sys_lstat);
#ifdef __STDC__
SCM
scm_sys_lstat(SCM str)
#else
SCM
scm_sys_lstat(str)
SCM str;
#endif
{
#ifdef HAVE_LSTAT
int rv;
struct stat stat_temp;
SCM_ASSERT(SCM_NIMP(str) && SCM_STRINGP(str), str, (char *)SCM_ARG1, s_sys_lstat);
SCM_SYSCALL(rv = lstat(SCM_CHARS(str), &stat_temp));
if (rv != 0)
SCM_SYSERROR (s_sys_lstat);
return scm_stat2scm(&stat_temp);
#else
SCM_SYSMISSING (s_sys_lstat);
/* not reached. */
return SCM_BOOL_F;
#endif
}
SCM_PROC (s_sys_copy_file, "copy-file", 2, 0, 0, scm_sys_copy_file);
#ifdef __STDC__
SCM
scm_sys_copy_file (SCM oldfile, SCM newfile)
#else
SCM
scm_sys_copy_file (oldfile, newfile)
SCM oldfile;
SCM newfile;
#endif
{
int oldfd, newfd;
int n;
char buf[BUFSIZ]; /* this space could be shared. */
struct stat oldstat;
SCM_ASSERT (SCM_NIMP (oldfile) && SCM_ROSTRINGP (oldfile), oldfile, SCM_ARG1, s_sys_copy_file);
if (SCM_SUBSTRP (oldfile))
oldfile = scm_makfromstr (SCM_ROCHARS (oldfile), SCM_ROLENGTH (oldfile), 0);
SCM_ASSERT (SCM_NIMP (newfile) && SCM_ROSTRINGP (newfile), newfile, SCM_ARG2, s_sys_copy_file);
if (SCM_SUBSTRP (newfile))
newfile = scm_makfromstr (SCM_ROCHARS (newfile), SCM_ROLENGTH (newfile), 0);
if (stat (SCM_ROCHARS (oldfile), &oldstat) == -1)
SCM_SYSERROR (s_sys_copy_file);
SCM_DEFER_INTS;
oldfd = open (SCM_ROCHARS (oldfile), O_RDONLY);
if (oldfd == -1)
SCM_SYSERROR (s_sys_copy_file);
/* use POSIX flags instead of 07777?. */
newfd = open (SCM_ROCHARS (newfile), O_WRONLY | O_CREAT | O_TRUNC,
oldstat.st_mode & 07777);
if (newfd == -1)
SCM_SYSERROR (s_sys_copy_file);
while ((n = read (oldfd, buf, sizeof buf)) > 0)
if (write (newfd, buf, n) != n)
{
close (oldfd);
close (newfd);
SCM_SYSERROR (s_sys_copy_file);
}
close (oldfd);
if (close (newfd) == -1)
SCM_SYSERROR (s_sys_copy_file);
SCM_ALLOW_INTS;
return SCM_UNSPECIFIED;
}
#ifdef __STDC__
void
scm_init_filesys (void)
#else
void
scm_init_filesys ()
#endif
{
/* 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
scm_tc16_fd = scm_newsmob (&fd_smob);
scm_tc16_dir = scm_newsmob (&dir_smob);
#include "filesys.x"
}
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