--- /dev/null
+/* Copyright (C) 1996,1997,1998,1999,2000,2001, 2002, 2004, 2006, 2008 Free Software Foundation, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+
+\f
+
+/* See stime.c for comments on why _POSIX_C_SOURCE is not always defined. */
+#define _LARGEFILE64_SOURCE /* ask for stat64 etc */
+#ifdef __hpux
+#define _POSIX_C_SOURCE 199506L /* for readdir_r */
+#endif
+#if defined(__INTERIX) && !defined(_REENTRANT)
+# define _REENTRANT /* ask Interix for readdir_r prototype */
+#endif
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+/* This blob per the Autoconf manual (under "Particular Functions"), updated
+ to match that of Gnulib. */
+#ifndef alloca
+# if HAVE_ALLOCA_H
+# include <alloca.h>
+# elif defined __GNUC__
+# define alloca __builtin_alloca
+# elif defined _AIX
+# define alloca __alloca
+# elif defined _MSC_VER
+# include <malloc.h>
+# define alloca _alloca
+# else
+# include <stddef.h>
+# ifdef __cplusplus
+extern "C"
+# endif
+void *alloca (size_t);
+# endif
+#endif
+
+#include <stdio.h>
+#include <errno.h>
+
+#include "libguile/_scm.h"
+#include "libguile/smob.h"
+#include "libguile/feature.h"
+#include "libguile/fports.h"
+#include "libguile/private-gc.h" /* for SCM_MAX */
+#include "libguile/iselect.h"
+#include "libguile/strings.h"
+#include "libguile/vectors.h"
+#include "libguile/lang.h"
+#include "libguile/dynwind.h"
+
+#include "libguile/validate.h"
+#include "libguile/filesys.h"
+
+\f
+#ifdef HAVE_IO_H
+#include <io.h>
+#endif
+
+#ifdef HAVE_DIRECT_H
+#include <direct.h>
+#endif
+
+#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 LIBC_H_WITH_UNISTD_H
+#include <libc.h>
+#endif
+
+#ifdef HAVE_SYS_SELECT_H
+#include <sys/select.h>
+#endif
+
+#ifdef HAVE_STRING_H
+#include <string.h>
+#endif
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+
+#ifdef HAVE_PWD_H
+#include <pwd.h>
+#endif
+
+
+#if defined (__MINGW32__) || defined (_MSC_VER) || defined (__BORLANDC__)
+# include "win32-dirent.h"
+# define NAMLEN(dirent) strlen((dirent)->d_name)
+/* The following bits are per AC_HEADER_DIRENT doco in the autoconf manual */
+#elif 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
+
+/* Ultrix has S_IFSOCK, but no S_ISSOCK. Ipe! */
+#if defined (S_IFSOCK) && ! defined (S_ISSOCK)
+#define S_ISSOCK(mode) (((mode) & S_IFMT) == S_IFSOCK)
+#endif
+
+/* The MinGW gcc does not define the S_ISSOCK macro. Any other native Windows
+ compiler like BorlandC or MSVC has none of these macros defined. */
+#ifdef __MINGW32__
+
+# ifdef _S_IFIFO
+# undef _S_IFIFO
+# endif
+# ifdef _S_IFCHR
+# undef _S_IFCHR
+# endif
+# ifdef _S_IFBLK
+# undef _S_IFBLK
+# endif
+# ifdef _S_IFDIR
+# undef _S_IFDIR
+# endif
+# ifdef _S_IFREG
+# undef _S_IFREG
+# endif
+# ifdef _S_IFSOCK
+# undef _S_IFSOCK
+# endif
+
+# define _S_IFIFO 0x1000 /* FIFO */
+# define _S_IFCHR 0x2000 /* Character */
+# define _S_IFBLK 0x3000 /* Block */
+# define _S_IFDIR 0x4000 /* Directory */
+# define _S_IFREG 0x8000 /* Regular */
+# define _S_IFSOCK 0xC000 /* Socket */
+
+# ifdef S_ISBLK
+# undef S_ISBLK
+# endif
+# ifdef S_ISFIFO
+# undef S_ISFIFO
+# endif
+# ifdef S_ISCHR
+# undef S_ISCHR
+# endif
+# ifdef S_ISDIR
+# undef S_ISDIR
+# endif
+# ifdef S_ISREG
+# undef S_ISREG
+# endif
+# ifdef S_ISSOCK
+# undef S_ISSOCK
+# endif
+
+# define S_ISBLK(mode) (((mode) & _S_IFMT) == _S_IFBLK)
+# define S_ISFIFO(mode) (((mode) & _S_IFMT) == _S_IFIFO)
+# define S_ISCHR(mode) (((mode) & _S_IFMT) == _S_IFCHR)
+# define S_ISDIR(mode) (((mode) & _S_IFMT) == _S_IFDIR)
+# define S_ISREG(mode) (((mode) & _S_IFMT) == _S_IFREG)
+# define S_ISSOCK(mode) (((mode) & _S_IFMT) == _S_IFSOCK)
+
+#endif /* __MINGW32__ */
+
+/* Some more definitions for the native Windows port. */
+#ifdef __MINGW32__
+# define mkdir(path, mode) mkdir (path)
+# define fsync(fd) _commit (fd)
+# define fchmod(fd, mode) (-1)
+#endif /* __MINGW32__ */
+
+/* dirfd() returns the file descriptor underlying a "DIR*" directory stream.
+ Found on MacOS X for instance. The following definition is for Solaris
+ 10, it's probably not right elsewhere, but that's ok, it shouldn't be
+ used elsewhere. Crib note: If we need more then gnulib has a dirfd.m4
+ figuring out how to get the fd (dirfd function, dirfd macro, dd_fd field,
+ or d_fd field). */
+#ifndef dirfd
+#define dirfd(dirstream) ((dirstream)->dd_fd)
+#endif
+
+\f
+
+/* Two helper macros for an often used pattern */
+
+#define STRING_SYSCALL(str,cstr,code) \
+ do { \
+ int eno; \
+ char *cstr = scm_to_locale_string (str); \
+ SCM_SYSCALL (code); \
+ eno = errno; free (cstr); errno = eno; \
+ } while (0)
+
+#define STRING2_SYSCALL(str1,cstr1,str2,cstr2,code) \
+ do { \
+ int eno; \
+ char *cstr1, *cstr2; \
+ scm_dynwind_begin (0); \
+ cstr1 = scm_to_locale_string (str1); \
+ scm_dynwind_free (cstr1); \
+ cstr2 = scm_to_locale_string (str2); \
+ scm_dynwind_free (cstr2); \
+ SCM_SYSCALL (code); \
+ eno = errno; scm_dynwind_end (); errno = eno; \
+ } while (0)
+
+\f
+
+/* {Permissions}
+ */
+
+#ifdef HAVE_CHOWN
+SCM_DEFINE (scm_chown, "chown", 3, 0, 0,
+ (SCM object, SCM owner, SCM group),
+ "Change the ownership and group of the file referred to by @var{object} to\n"
+ "the integer values @var{owner} and @var{group}. @var{object} can be\n"
+ "a string containing a file name or, if the platform\n"
+ "supports fchown, a port or integer file descriptor\n"
+ "which is open on the file. The return value\n"
+ "is unspecified.\n\n"
+ "If @var{object} is a symbolic link, either the\n"
+ "ownership of the link or the ownership of the referenced file will be\n"
+ "changed depending on the operating system (lchown is\n"
+ "unsupported at present). If @var{owner} or @var{group} is specified\n"
+ "as @code{-1}, then that ID is not changed.")
+#define FUNC_NAME s_scm_chown
+{
+ int rv;
+
+ object = SCM_COERCE_OUTPORT (object);
+
+#ifdef HAVE_FCHOWN
+ if (scm_is_integer (object) || (SCM_OPFPORTP (object)))
+ {
+ int fdes = (SCM_OPFPORTP (object)?
+ SCM_FPORT_FDES (object) : scm_to_int (object));
+
+ SCM_SYSCALL (rv = fchown (fdes, scm_to_int (owner), scm_to_int (group)));
+ }
+ else
+#endif
+ {
+ STRING_SYSCALL (object, c_object,
+ rv = chown (c_object,
+ scm_to_int (owner), scm_to_int (group)));
+ }
+ if (rv == -1)
+ SCM_SYSERROR;
+ return SCM_UNSPECIFIED;
+}
+#undef FUNC_NAME
+#endif /* HAVE_CHOWN */
+
+
+SCM_DEFINE (scm_chmod, "chmod", 2, 0, 0,
+ (SCM object, SCM mode),
+ "Changes the permissions of the file referred to by @var{obj}.\n"
+ "@var{obj} can be a string containing a file name or a port or integer file\n"
+ "descriptor which is open on a file (in which case @code{fchmod} is used\n"
+ "as the underlying system call).\n"
+ "@var{mode} specifies\n"
+ "the new permissions as a decimal number, e.g., @code{(chmod \"foo\" #o755)}.\n"
+ "The return value is unspecified.")
+#define FUNC_NAME s_scm_chmod
+{
+ int rv;
+ int fdes;
+
+ object = SCM_COERCE_OUTPORT (object);
+
+ if (scm_is_integer (object) || SCM_OPFPORTP (object))
+ {
+ if (scm_is_integer (object))
+ fdes = scm_to_int (object);
+ else
+ fdes = SCM_FPORT_FDES (object);
+ SCM_SYSCALL (rv = fchmod (fdes, scm_to_int (mode)));
+ }
+ else
+ {
+ STRING_SYSCALL (object, c_object,
+ rv = chmod (c_object, scm_to_int (mode)));
+ }
+ if (rv == -1)
+ SCM_SYSERROR;
+ return SCM_UNSPECIFIED;
+}
+#undef FUNC_NAME
+
+SCM_DEFINE (scm_umask, "umask", 0, 1, 0,
+ (SCM mode),
+ "If @var{mode} is omitted, returns a decimal number representing the current\n"
+ "file creation mask. Otherwise the file creation mask is set to\n"
+ "@var{mode} and the previous value is returned.\n\n"
+ "E.g., @code{(umask #o022)} sets the mask to octal 22, decimal 18.")
+#define FUNC_NAME s_scm_umask
+{
+ mode_t mask;
+ if (SCM_UNBNDP (mode))
+ {
+ mask = umask (0);
+ umask (mask);
+ }
+ else
+ {
+ mask = umask (scm_to_uint (mode));
+ }
+ return scm_from_uint (mask);
+}
+#undef FUNC_NAME
+
+\f
+
+SCM_DEFINE (scm_open_fdes, "open-fdes", 2, 1, 0,
+ (SCM path, SCM flags, SCM mode),
+ "Similar to @code{open} but return a file descriptor instead of\n"
+ "a port.")
+#define FUNC_NAME s_scm_open_fdes
+{
+ int fd;
+ int iflags;
+ int imode;
+
+ iflags = SCM_NUM2INT (2, flags);
+ imode = SCM_NUM2INT_DEF (3, mode, 0666);
+ STRING_SYSCALL (path, c_path, fd = open_or_open64 (c_path, iflags, imode));
+ if (fd == -1)
+ SCM_SYSERROR;
+ return scm_from_int (fd);
+}
+#undef FUNC_NAME
+
+SCM_DEFINE (scm_open, "open", 2, 1, 0,
+ (SCM path, SCM flags, SCM mode),
+ "Open the file named by @var{path} for reading and/or writing.\n"
+ "@var{flags} is an integer specifying how the file should be opened.\n"
+ "@var{mode} is an integer specifying the permission bits of the file, if\n"
+ "it needs to be created, before the umask is applied. The default is 666\n"
+ "(Unix itself has no default).\n\n"
+ "@var{flags} can be constructed by combining variables using @code{logior}.\n"
+ "Basic flags are:\n\n"
+ "@defvar O_RDONLY\n"
+ "Open the file read-only.\n"
+ "@end defvar\n"
+ "@defvar O_WRONLY\n"
+ "Open the file write-only.\n"
+ "@end defvar\n"
+ "@defvar O_RDWR\n"
+ "Open the file read/write.\n"
+ "@end defvar\n"
+ "@defvar O_APPEND\n"
+ "Append to the file instead of truncating.\n"
+ "@end defvar\n"
+ "@defvar O_CREAT\n"
+ "Create the file if it does not already exist.\n"
+ "@end defvar\n\n"
+ "See the Unix documentation of the @code{open} system call\n"
+ "for additional flags.")
+#define FUNC_NAME s_scm_open
+{
+ SCM newpt;
+ char *port_mode;
+ int fd;
+ int iflags;
+
+ fd = scm_to_int (scm_open_fdes (path, flags, mode));
+ iflags = SCM_NUM2INT (2, flags);
+ if (iflags & O_RDWR)
+ {
+ if (iflags & O_APPEND)
+ port_mode = "a+";
+ else if (iflags & O_CREAT)
+ port_mode = "w+";
+ else
+ port_mode = "r+";
+ }
+ else {
+ if (iflags & O_APPEND)
+ port_mode = "a";
+ else if (iflags & O_WRONLY)
+ port_mode = "w";
+ else
+ port_mode = "r";
+ }
+ newpt = scm_fdes_to_port (fd, port_mode, path);
+ return newpt;
+}
+#undef FUNC_NAME
+
+SCM_DEFINE (scm_close, "close", 1, 0, 0,
+ (SCM fd_or_port),
+ "Similar to close-port (@pxref{Closing, close-port}),\n"
+ "but also works on file descriptors. A side\n"
+ "effect of closing a file descriptor is that any ports using that file\n"
+ "descriptor are moved to a different file descriptor and have\n"
+ "their revealed counts set to zero.")
+#define FUNC_NAME s_scm_close
+{
+ int rv;
+ int fd;
+
+ fd_or_port = SCM_COERCE_OUTPORT (fd_or_port);
+
+ if (SCM_PORTP (fd_or_port))
+ return scm_close_port (fd_or_port);
+ fd = scm_to_int (fd_or_port);
+ scm_evict_ports (fd); /* see scsh manual. */
+ SCM_SYSCALL (rv = close (fd));
+ /* following scsh, closing an already closed file descriptor is
+ not an error. */
+ if (rv < 0 && errno != EBADF)
+ SCM_SYSERROR;
+ return scm_from_bool (rv >= 0);
+}
+#undef FUNC_NAME
+
+SCM_DEFINE (scm_close_fdes, "close-fdes", 1, 0, 0,
+ (SCM fd),
+ "A simple wrapper for the @code{close} system call.\n"
+ "Close file descriptor @var{fd}, which must be an integer.\n"
+ "Unlike close (@pxref{Ports and File Descriptors, close}),\n"
+ "the file descriptor will be closed even if a port is using it.\n"
+ "The return value is unspecified.")
+#define FUNC_NAME s_scm_close_fdes
+{
+ int c_fd;
+ int rv;
+
+ c_fd = scm_to_int (fd);
+ SCM_SYSCALL (rv = close (c_fd));
+ if (rv < 0)
+ SCM_SYSERROR;
+ return SCM_UNSPECIFIED;
+}
+#undef FUNC_NAME
+
+\f
+/* {Files}
+ */
+
+SCM_SYMBOL (scm_sym_regular, "regular");
+SCM_SYMBOL (scm_sym_directory, "directory");
+#ifdef S_ISLNK
+SCM_SYMBOL (scm_sym_symlink, "symlink");
+#endif
+SCM_SYMBOL (scm_sym_block_special, "block-special");
+SCM_SYMBOL (scm_sym_char_special, "char-special");
+SCM_SYMBOL (scm_sym_fifo, "fifo");
+SCM_SYMBOL (scm_sym_sock, "socket");
+SCM_SYMBOL (scm_sym_unknown, "unknown");
+
+static SCM
+scm_stat2scm (struct stat_or_stat64 *stat_temp)
+{
+ SCM ans = scm_c_make_vector (15, SCM_UNSPECIFIED);
+
+ SCM_SIMPLE_VECTOR_SET(ans, 0, scm_from_ulong (stat_temp->st_dev));
+ SCM_SIMPLE_VECTOR_SET(ans, 1, scm_from_ino_t_or_ino64_t (stat_temp->st_ino));
+ SCM_SIMPLE_VECTOR_SET(ans, 2, scm_from_ulong (stat_temp->st_mode));
+ SCM_SIMPLE_VECTOR_SET(ans, 3, scm_from_ulong (stat_temp->st_nlink));
+ SCM_SIMPLE_VECTOR_SET(ans, 4, scm_from_ulong (stat_temp->st_uid));
+ SCM_SIMPLE_VECTOR_SET(ans, 5, scm_from_ulong (stat_temp->st_gid));
+#ifdef HAVE_STRUCT_STAT_ST_RDEV
+ SCM_SIMPLE_VECTOR_SET(ans, 6, scm_from_ulong (stat_temp->st_rdev));
+#else
+ SCM_SIMPLE_VECTOR_SET(ans, 6, SCM_BOOL_F);
+#endif
+ SCM_SIMPLE_VECTOR_SET(ans, 7, scm_from_off_t_or_off64_t (stat_temp->st_size));
+ SCM_SIMPLE_VECTOR_SET(ans, 8, scm_from_ulong (stat_temp->st_atime));
+ SCM_SIMPLE_VECTOR_SET(ans, 9, scm_from_ulong (stat_temp->st_mtime));
+ SCM_SIMPLE_VECTOR_SET(ans, 10, scm_from_ulong (stat_temp->st_ctime));
+#ifdef HAVE_STRUCT_STAT_ST_BLKSIZE
+ SCM_SIMPLE_VECTOR_SET(ans, 11, scm_from_ulong (stat_temp->st_blksize));
+#else
+ SCM_SIMPLE_VECTOR_SET(ans, 11, scm_from_ulong (4096L));
+#endif
+#ifdef HAVE_STRUCT_STAT_ST_BLOCKS
+ SCM_SIMPLE_VECTOR_SET(ans, 12, scm_from_blkcnt_t_or_blkcnt64_t (stat_temp->st_blocks));
+#else
+ SCM_SIMPLE_VECTOR_SET(ans, 12, SCM_BOOL_F);
+#endif
+ {
+ int mode = stat_temp->st_mode;
+
+ if (S_ISREG (mode))
+ SCM_SIMPLE_VECTOR_SET(ans, 13, scm_sym_regular);
+ else if (S_ISDIR (mode))
+ SCM_SIMPLE_VECTOR_SET(ans, 13, scm_sym_directory);
+#ifdef S_ISLNK
+ /* systems without symlinks probably don't have S_ISLNK */
+ else if (S_ISLNK (mode))
+ SCM_SIMPLE_VECTOR_SET(ans, 13, scm_sym_symlink);
+#endif
+ else if (S_ISBLK (mode))
+ SCM_SIMPLE_VECTOR_SET(ans, 13, scm_sym_block_special);
+ else if (S_ISCHR (mode))
+ SCM_SIMPLE_VECTOR_SET(ans, 13, scm_sym_char_special);
+ else if (S_ISFIFO (mode))
+ SCM_SIMPLE_VECTOR_SET(ans, 13, scm_sym_fifo);
+#ifdef S_ISSOCK
+ else if (S_ISSOCK (mode))
+ SCM_SIMPLE_VECTOR_SET(ans, 13, scm_sym_sock);
+#endif
+ else
+ SCM_SIMPLE_VECTOR_SET(ans, 13, scm_sym_unknown);
+
+ SCM_SIMPLE_VECTOR_SET(ans, 14, scm_from_int ((~S_IFMT) & mode));
+
+ /* the layout of the bits in ve[14] is intended to be portable.
+ If there are systems that don't follow the usual convention,
+ the following could be used:
+
+ tmp = 0;
+ if (S_ISUID & mode) tmp += 1;
+ tmp <<= 1;
+ if (S_IRGRP & mode) tmp += 1;
+ tmp <<= 1;
+ if (S_ISVTX & mode) tmp += 1;
+ tmp <<= 1;
+ if (S_IRUSR & mode) tmp += 1;
+ tmp <<= 1;
+ if (S_IWUSR & mode) tmp += 1;
+ tmp <<= 1;
+ if (S_IXUSR & mode) tmp += 1;
+ tmp <<= 1;
+ if (S_IWGRP & mode) tmp += 1;
+ tmp <<= 1;
+ if (S_IXGRP & mode) tmp += 1;
+ tmp <<= 1;
+ if (S_IROTH & mode) tmp += 1;
+ tmp <<= 1;
+ if (S_IWOTH & mode) tmp += 1;
+ tmp <<= 1;
+ if (S_IXOTH & mode) tmp += 1;
+
+ SCM_SIMPLE_VECTOR_SET(ans, 14, scm_from_int (tmp));
+
+ */
+ }
+
+ return ans;
+}
+
+#ifdef __MINGW32__
+/*
+ * Try getting the appropiate stat buffer for a given file descriptor
+ * under Windows. It differentiates between file, pipe and socket
+ * descriptors.
+ */
+static int fstat_Win32 (int fdes, struct stat *buf)
+{
+ int error, optlen = sizeof (int);
+
+ memset (buf, 0, sizeof (struct stat));
+
+ /* Is this a socket ? */
+ if (getsockopt (fdes, SOL_SOCKET, SO_ERROR, (void *) &error, &optlen) >= 0)
+ {
+ buf->st_mode = _S_IFSOCK | _S_IREAD | _S_IWRITE | _S_IEXEC;
+ buf->st_nlink = 1;
+ buf->st_atime = buf->st_ctime = buf->st_mtime = time (NULL);
+ return 0;
+ }
+ /* Maybe a regular file or pipe ? */
+ return fstat (fdes, buf);
+}
+#endif /* __MINGW32__ */
+
+SCM_DEFINE (scm_stat, "stat", 1, 0, 0,
+ (SCM object),
+ "Return an object containing various information about the file\n"
+ "determined by @var{obj}. @var{obj} can be a string containing\n"
+ "a file name or a port or integer file descriptor which is open\n"
+ "on a file (in which case @code{fstat} is used as the underlying\n"
+ "system call).\n"
+ "\n"
+ "The object returned by @code{stat} can be passed as a single\n"
+ "parameter to the following procedures, all of which return\n"
+ "integers:\n"
+ "\n"
+ "@table @code\n"
+ "@item stat:dev\n"
+ "The device containing the file.\n"
+ "@item stat:ino\n"
+ "The file serial number, which distinguishes this file from all\n"
+ "other files on the same device.\n"
+ "@item stat:mode\n"
+ "The mode of the file. This includes file type information and\n"
+ "the file permission bits. See @code{stat:type} and\n"
+ "@code{stat:perms} below.\n"
+ "@item stat:nlink\n"
+ "The number of hard links to the file.\n"
+ "@item stat:uid\n"
+ "The user ID of the file's owner.\n"
+ "@item stat:gid\n"
+ "The group ID of the file.\n"
+ "@item stat:rdev\n"
+ "Device ID; this entry is defined only for character or block\n"
+ "special files.\n"
+ "@item stat:size\n"
+ "The size of a regular file in bytes.\n"
+ "@item stat:atime\n"
+ "The last access time for the file.\n"
+ "@item stat:mtime\n"
+ "The last modification time for the file.\n"
+ "@item stat:ctime\n"
+ "The last modification time for the attributes of the file.\n"
+ "@item stat:blksize\n"
+ "The optimal block size for reading or writing the file, in\n"
+ "bytes.\n"
+ "@item stat:blocks\n"
+ "The amount of disk space that the file occupies measured in\n"
+ "units of 512 byte blocks.\n"
+ "@end table\n"
+ "\n"
+ "In addition, the following procedures return the information\n"
+ "from stat:mode in a more convenient form:\n"
+ "\n"
+ "@table @code\n"
+ "@item stat:type\n"
+ "A symbol representing the type of file. Possible values are\n"
+ "regular, directory, symlink, block-special, char-special, fifo,\n"
+ "socket and unknown\n"
+ "@item stat:perms\n"
+ "An integer representing the access permission bits.\n"
+ "@end table")
+#define FUNC_NAME s_scm_stat
+{
+ int rv;
+ int fdes;
+ struct stat_or_stat64 stat_temp;
+
+ if (scm_is_integer (object))
+ {
+#ifdef __MINGW32__
+ SCM_SYSCALL (rv = fstat_Win32 (scm_to_int (object), &stat_temp));
+#else
+ SCM_SYSCALL (rv = fstat_or_fstat64 (scm_to_int (object), &stat_temp));
+#endif
+ }
+ else if (scm_is_string (object))
+ {
+ char *file = scm_to_locale_string (object);
+#ifdef __MINGW32__
+ char *p;
+ p = file + strlen (file) - 1;
+ while (p > file && (*p == '/' || *p == '\\'))
+ *p-- = '\0';
+#endif
+ SCM_SYSCALL (rv = stat_or_stat64 (file, &stat_temp));
+ free (file);
+ }
+ else
+ {
+ object = SCM_COERCE_OUTPORT (object);
+ SCM_VALIDATE_OPFPORT (1, object);
+ fdes = SCM_FPORT_FDES (object);
+#ifdef __MINGW32__
+ SCM_SYSCALL (rv = fstat_Win32 (fdes, &stat_temp));
+#else
+ SCM_SYSCALL (rv = fstat_or_fstat64 (fdes, &stat_temp));
+#endif
+ }
+
+ if (rv == -1)
+ {
+ int en = errno;
+
+ SCM_SYSERROR_MSG ("~A: ~S",
+ scm_list_2 (scm_strerror (scm_from_int (en)),
+ object),
+ en);
+ }
+ return scm_stat2scm (&stat_temp);
+}
+#undef FUNC_NAME
+
+\f
+/* {Modifying Directories}
+ */
+
+#ifdef HAVE_LINK
+SCM_DEFINE (scm_link, "link", 2, 0, 0,
+ (SCM oldpath, SCM newpath),
+ "Creates a new name @var{newpath} in the file system for the\n"
+ "file named by @var{oldpath}. If @var{oldpath} is a symbolic\n"
+ "link, the link may or may not be followed depending on the\n"
+ "system.")
+#define FUNC_NAME s_scm_link
+{
+ int val;
+
+ STRING2_SYSCALL (oldpath, c_oldpath,
+ newpath, c_newpath,
+ val = link (c_oldpath, c_newpath));
+ if (val != 0)
+ SCM_SYSERROR;
+ return SCM_UNSPECIFIED;
+}
+#undef FUNC_NAME
+#endif /* HAVE_LINK */
+
+#ifdef HAVE_RENAME
+#define my_rename rename
+#else
+static int
+my_rename (const char *oldname, const char *newname)
+{
+ int rv;
+
+ SCM_SYSCALL (rv = link (oldname, newname));
+ if (rv == 0)
+ {
+ SCM_SYSCALL (rv = unlink (oldname));
+ if (rv != 0)
+ /* unlink failed. remove new name */
+ SCM_SYSCALL (unlink (newname));
+ }
+ return rv;
+}
+#endif
+
+SCM_DEFINE (scm_rename, "rename-file", 2, 0, 0,
+ (SCM oldname, SCM newname),
+ "Renames the file specified by @var{oldname} to @var{newname}.\n"
+ "The return value is unspecified.")
+#define FUNC_NAME s_scm_rename
+{
+ int rv;
+
+ STRING2_SYSCALL (oldname, c_oldname,
+ newname, c_newname,
+ rv = my_rename (c_oldname, c_newname));
+ if (rv != 0)
+ SCM_SYSERROR;
+ return SCM_UNSPECIFIED;
+}
+#undef FUNC_NAME
+
+
+SCM_DEFINE (scm_delete_file, "delete-file", 1, 0, 0,
+ (SCM str),
+ "Deletes (or \"unlinks\") the file specified by @var{path}.")
+#define FUNC_NAME s_scm_delete_file
+{
+ int ans;
+ STRING_SYSCALL (str, c_str, ans = unlink (c_str));
+ if (ans != 0)
+ SCM_SYSERROR;
+ return SCM_UNSPECIFIED;
+}
+#undef FUNC_NAME
+
+#ifdef HAVE_MKDIR
+SCM_DEFINE (scm_mkdir, "mkdir", 1, 1, 0,
+ (SCM path, SCM mode),
+ "Create a new directory named by @var{path}. If @var{mode} is omitted\n"
+ "then the permissions of the directory file are set using the current\n"
+ "umask. Otherwise they are set to the decimal value specified with\n"
+ "@var{mode}. The return value is unspecified.")
+#define FUNC_NAME s_scm_mkdir
+{
+ int rv;
+ mode_t mask;
+
+ if (SCM_UNBNDP (mode))
+ {
+ mask = umask (0);
+ umask (mask);
+ STRING_SYSCALL (path, c_path, rv = mkdir (c_path, 0777 ^ mask));
+ }
+ else
+ {
+ STRING_SYSCALL (path, c_path, rv = mkdir (c_path, scm_to_uint (mode)));
+ }
+ if (rv != 0)
+ SCM_SYSERROR;
+ return SCM_UNSPECIFIED;
+}
+#undef FUNC_NAME
+#endif /* HAVE_MKDIR */
+
+#ifdef HAVE_RMDIR
+SCM_DEFINE (scm_rmdir, "rmdir", 1, 0, 0,
+ (SCM path),
+ "Remove the existing directory named by @var{path}. The directory must\n"
+ "be empty for this to succeed. The return value is unspecified.")
+#define FUNC_NAME s_scm_rmdir
+{
+ int val;
+
+ STRING_SYSCALL (path, c_path, val = rmdir (c_path));
+ if (val != 0)
+ SCM_SYSERROR;
+ return SCM_UNSPECIFIED;
+}
+#undef FUNC_NAME
+#endif
+
+\f
+
+/* {Examining Directories}
+ */
+
+scm_t_bits scm_tc16_dir;
+
+
+SCM_DEFINE (scm_directory_stream_p, "directory-stream?", 1, 0, 0,
+ (SCM obj),
+ "Return a boolean indicating whether @var{object} is a directory\n"
+ "stream as returned by @code{opendir}.")
+#define FUNC_NAME s_scm_directory_stream_p
+{
+ return scm_from_bool (SCM_DIRP (obj));
+}
+#undef FUNC_NAME
+
+
+SCM_DEFINE (scm_opendir, "opendir", 1, 0, 0,
+ (SCM dirname),
+ "Open the directory specified by @var{path} and return a directory\n"
+ "stream.")
+#define FUNC_NAME s_scm_opendir
+{
+ DIR *ds;
+ STRING_SYSCALL (dirname, c_dirname, ds = opendir (c_dirname));
+ if (ds == NULL)
+ SCM_SYSERROR;
+ SCM_RETURN_NEWSMOB (scm_tc16_dir | SCM_DIR_FLAG_OPEN, ds);
+}
+#undef FUNC_NAME
+
+
+/* FIXME: The glibc manual has a portability note that readdir_r may not
+ null-terminate its return string. The circumstances outlined for this
+ are not clear, nor is it clear what should be done about it. Lets use
+ NAMLEN and worry about what else should be done if/when someone can
+ figure it out. */
+
+SCM_DEFINE (scm_readdir, "readdir", 1, 0, 0,
+ (SCM port),
+ "Return (as a string) the next directory entry from the directory stream\n"
+ "@var{stream}. If there is no remaining entry to be read then the\n"
+ "end of file object is returned.")
+#define FUNC_NAME s_scm_readdir
+{
+ struct dirent_or_dirent64 *rdent;
+
+ SCM_VALIDATE_DIR (1, port);
+ if (!SCM_DIR_OPEN_P (port))
+ SCM_MISC_ERROR ("Directory ~S is not open.", scm_list_1 (port));
+
+#if HAVE_READDIR_R
+ /* As noted in the glibc manual, on various systems (such as Solaris) the
+ d_name[] field is only 1 char and you're expected to size the dirent
+ buffer for readdir_r based on NAME_MAX. The SCM_MAX expressions below
+ effectively give either sizeof(d_name) or NAME_MAX+1, whichever is
+ bigger.
+
+ On solaris 10 there's no NAME_MAX constant, it's necessary to use
+ pathconf(). We prefer NAME_MAX though, since it should be a constant
+ and will therefore save a system call. We also prefer it since dirfd()
+ is not available everywhere.
+
+ An alternative to dirfd() would be to open() the directory and then use
+ fdopendir(), if the latter is available. That'd let us hold the fd
+ somewhere in the smob, or just the dirent size calculated once. */
+ {
+ struct dirent_or_dirent64 de; /* just for sizeof */
+ DIR *ds = (DIR *) SCM_CELL_WORD_1 (port);
+ size_t namlen;
+#ifdef NAME_MAX
+ char buf [SCM_MAX (sizeof (de),
+ sizeof (de) - sizeof (de.d_name) + NAME_MAX + 1)];
+#else
+ char *buf;
+ long name_max = fpathconf (dirfd (ds), _PC_NAME_MAX);
+ if (name_max == -1)
+ SCM_SYSERROR;
+ buf = alloca (SCM_MAX (sizeof (de),
+ sizeof (de) - sizeof (de.d_name) + name_max + 1));
+#endif
+
+ errno = 0;
+ SCM_SYSCALL (readdir_r_or_readdir64_r (ds, (struct dirent_or_dirent64 *) buf, &rdent));
+ if (errno != 0)
+ SCM_SYSERROR;
+ if (! rdent)
+ return SCM_EOF_VAL;
+
+ namlen = NAMLEN (rdent);
+
+ return (rdent ? scm_from_locale_stringn (rdent->d_name, NAMLEN (rdent))
+ : SCM_EOF_VAL);
+ }
+#else
+ {
+ SCM ret;
+ scm_dynwind_begin (0);
+ scm_i_dynwind_pthread_mutex_lock (&scm_i_misc_mutex);
+
+ errno = 0;
+ SCM_SYSCALL (rdent = readdir_or_readdir64 ((DIR *) SCM_CELL_WORD_1 (port)));
+ if (errno != 0)
+ SCM_SYSERROR;
+
+ ret = (rdent ? scm_from_locale_stringn (rdent->d_name, NAMLEN (rdent))
+ : SCM_EOF_VAL);
+
+ scm_dynwind_end ();
+ return ret;
+ }
+#endif
+}
+#undef FUNC_NAME
+
+
+SCM_DEFINE (scm_rewinddir, "rewinddir", 1, 0, 0,
+ (SCM port),
+ "Reset the directory port @var{stream} so that the next call to\n"
+ "@code{readdir} will return the first directory entry.")
+#define FUNC_NAME s_scm_rewinddir
+{
+ SCM_VALIDATE_DIR (1, port);
+ if (!SCM_DIR_OPEN_P (port))
+ SCM_MISC_ERROR ("Directory ~S is not open.", scm_list_1 (port));
+
+ rewinddir ((DIR *) SCM_CELL_WORD_1 (port));
+
+ return SCM_UNSPECIFIED;
+}
+#undef FUNC_NAME
+
+
+SCM_DEFINE (scm_closedir, "closedir", 1, 0, 0,
+ (SCM port),
+ "Close the directory stream @var{stream}.\n"
+ "The return value is unspecified.")
+#define FUNC_NAME s_scm_closedir
+{
+ SCM_VALIDATE_DIR (1, port);
+
+ if (SCM_DIR_OPEN_P (port))
+ {
+ int sts;
+
+ SCM_SYSCALL (sts = closedir ((DIR *) SCM_CELL_WORD_1 (port)));
+ if (sts != 0)
+ SCM_SYSERROR;
+
+ SCM_SET_CELL_WORD_0 (port, scm_tc16_dir);
+ }
+
+ return SCM_UNSPECIFIED;
+}
+#undef FUNC_NAME
+
+
+static int
+scm_dir_print (SCM exp, SCM port, scm_print_state *pstate SCM_UNUSED)
+{
+ scm_puts ("#<", port);
+ if (!SCM_DIR_OPEN_P (exp))
+ scm_puts ("closed: ", port);
+ scm_puts ("directory stream ", port);
+ scm_uintprint (SCM_CELL_WORD_1 (exp), 16, port);
+ scm_putc ('>', port);
+ return 1;
+}
+
+
+static size_t
+scm_dir_free (SCM p)
+{
+ if (SCM_DIR_OPEN_P (p))
+ closedir ((DIR *) SCM_CELL_WORD_1 (p));
+ return 0;
+}
+
+\f
+/* {Navigating Directories}
+ */
+
+
+SCM_DEFINE (scm_chdir, "chdir", 1, 0, 0,
+ (SCM str),
+ "Change the current working directory to @var{path}.\n"
+ "The return value is unspecified.")
+#define FUNC_NAME s_scm_chdir
+{
+ int ans;
+
+ STRING_SYSCALL (str, c_str, ans = chdir (c_str));
+ if (ans != 0)
+ SCM_SYSERROR;
+ return SCM_UNSPECIFIED;
+}
+#undef FUNC_NAME
+
+#ifdef HAVE_GETCWD
+SCM_DEFINE (scm_getcwd, "getcwd", 0, 0, 0,
+ (),
+ "Return the name of the current working directory.")
+#define FUNC_NAME s_scm_getcwd
+{
+ char *rv;
+ size_t size = 100;
+ char *wd;
+ SCM result;
+
+ wd = scm_malloc (size);
+ while ((rv = getcwd (wd, size)) == 0 && errno == ERANGE)
+ {
+ free (wd);
+ size *= 2;
+ wd = scm_malloc (size);
+ }
+ if (rv == 0)
+ {
+ int save_errno = errno;
+ free (wd);
+ errno = save_errno;
+ SCM_SYSERROR;
+ }
+ result = scm_from_locale_stringn (wd, strlen (wd));
+ free (wd);
+ return result;
+}
+#undef FUNC_NAME
+#endif /* HAVE_GETCWD */
+
+\f
+
+#ifdef HAVE_SELECT
+
+/* check that element is a port or file descriptor. if it's a port
+ and its buffer is ready for use, add it to the ports_ready list.
+ otherwise add its file descriptor to *set. the type of list can be
+ determined from pos: SCM_ARG1 for reads, SCM_ARG2 for writes,
+ SCM_ARG3 for excepts. */
+static int
+set_element (SELECT_TYPE *set, SCM *ports_ready, SCM element, int pos)
+{
+ int fd;
+
+ if (scm_is_integer (element))
+ {
+ fd = scm_to_int (element);
+ }
+ else
+ {
+ int use_buf = 0;
+
+ element = SCM_COERCE_OUTPORT (element);
+ SCM_ASSERT (SCM_OPFPORTP (element), element, pos, "select");
+ if (pos == SCM_ARG1)
+ {
+ /* check whether port has buffered input. */
+ scm_t_port *pt = SCM_PTAB_ENTRY (element);
+
+ if (pt->read_pos < pt->read_end)
+ use_buf = 1;
+ }
+ else if (pos == SCM_ARG2)
+ {
+ /* check whether port's output buffer has room. */
+ scm_t_port *pt = SCM_PTAB_ENTRY (element);
+
+ /* > 1 since writing the last byte in the buffer causes flush. */
+ if (pt->write_end - pt->write_pos > 1)
+ use_buf = 1;
+ }
+ fd = use_buf ? -1 : SCM_FPORT_FDES (element);
+ }
+ if (fd == -1)
+ *ports_ready = scm_cons (element, *ports_ready);
+ else
+ FD_SET (fd, set);
+ return fd;
+}
+
+/* check list_or_vec, a list or vector of ports or file descriptors,
+ adding each member to either the ports_ready list (if it's a port
+ with a usable buffer) or to *set. the kind of list_or_vec can be
+ determined from pos: SCM_ARG1 for reads, SCM_ARG2 for writes,
+ SCM_ARG3 for excepts. */
+static int
+fill_select_type (SELECT_TYPE *set, SCM *ports_ready, SCM list_or_vec, int pos)
+{
+ int max_fd = 0;
+
+ if (scm_is_simple_vector (list_or_vec))
+ {
+ int i = SCM_SIMPLE_VECTOR_LENGTH (list_or_vec);
+
+ while (--i >= 0)
+ {
+ int fd = set_element (set, ports_ready,
+ SCM_SIMPLE_VECTOR_REF (list_or_vec, i), pos);
+
+ if (fd > max_fd)
+ max_fd = fd;
+ }
+ }
+ else
+ {
+ while (!SCM_NULL_OR_NIL_P (list_or_vec))
+ {
+ int fd = set_element (set, ports_ready, SCM_CAR (list_or_vec), pos);
+
+ if (fd > max_fd)
+ max_fd = fd;
+ list_or_vec = SCM_CDR (list_or_vec);
+ }
+ }
+
+ return max_fd;
+}
+
+/* if element (a file descriptor or port) appears in *set, cons it to
+ list. return list. */
+static SCM
+get_element (SELECT_TYPE *set, SCM element, SCM list)
+{
+ int fd;
+
+ if (scm_is_integer (element))
+ {
+ fd = scm_to_int (element);
+ }
+ else
+ {
+ fd = SCM_FPORT_FDES (SCM_COERCE_OUTPORT (element));
+ }
+ if (FD_ISSET (fd, set))
+ list = scm_cons (element, list);
+ return list;
+}
+
+/* construct component of scm_select return value.
+ set: pointer to set of file descriptors found by select to be ready
+ ports_ready: ports ready due to buffering
+ list_or_vec: original list/vector handed to scm_select.
+ the return value is a list/vector of ready ports/file descriptors.
+ works by finding the objects in list which correspond to members of
+ *set and appending them to ports_ready. result is converted to a
+ vector if list_or_vec is a vector. */
+static SCM
+retrieve_select_type (SELECT_TYPE *set, SCM ports_ready, SCM list_or_vec)
+{
+ SCM answer_list = ports_ready;
+
+ if (scm_is_simple_vector (list_or_vec))
+ {
+ int i = SCM_SIMPLE_VECTOR_LENGTH (list_or_vec);
+
+ while (--i >= 0)
+ {
+ answer_list = get_element (set,
+ SCM_SIMPLE_VECTOR_REF (list_or_vec, i),
+ answer_list);
+ }
+ return scm_vector (answer_list);
+ }
+ else
+ {
+ /* list_or_vec must be a list. */
+ while (!SCM_NULL_OR_NIL_P (list_or_vec))
+ {
+ answer_list = get_element (set, SCM_CAR (list_or_vec), answer_list);
+ list_or_vec = SCM_CDR (list_or_vec);
+ }
+ return answer_list;
+ }
+}
+
+/* Static helper functions above refer to s_scm_select directly as s_select */
+SCM_DEFINE (scm_select, "select", 3, 2, 0,
+ (SCM reads, SCM writes, SCM excepts, SCM secs, SCM usecs),
+ "This procedure has a variety of uses: waiting for the ability\n"
+ "to provide input, accept output, or the existence of\n"
+ "exceptional conditions on a collection of ports or file\n"
+ "descriptors, or waiting for a timeout to occur.\n"
+ "It also returns if interrupted by a signal.\n\n"
+ "@var{reads}, @var{writes} and @var{excepts} can be lists or\n"
+ "vectors, with each member a port or a file descriptor.\n"
+ "The value returned is a list of three corresponding\n"
+ "lists or vectors containing only the members which meet the\n"
+ "specified requirement. The ability of port buffers to\n"
+ "provide input or accept output is taken into account.\n"
+ "Ordering of the input lists or vectors is not preserved.\n\n"
+ "The optional arguments @var{secs} and @var{usecs} specify the\n"
+ "timeout. Either @var{secs} can be specified alone, as\n"
+ "either an integer or a real number, or both @var{secs} and\n"
+ "@var{usecs} can be specified as integers, in which case\n"
+ "@var{usecs} is an additional timeout expressed in\n"
+ "microseconds. If @var{secs} is omitted or is @code{#f} then\n"
+ "select will wait for as long as it takes for one of the other\n"
+ "conditions to be satisfied.\n\n"
+ "The scsh version of @code{select} differs as follows:\n"
+ "Only vectors are accepted for the first three arguments.\n"
+ "The @var{usecs} argument is not supported.\n"
+ "Multiple values are returned instead of a list.\n"
+ "Duplicates in the input vectors appear only once in output.\n"
+ "An additional @code{select!} interface is provided.")
+#define FUNC_NAME s_scm_select
+{
+ struct timeval timeout;
+ struct timeval * time_ptr;
+ SELECT_TYPE read_set;
+ SELECT_TYPE write_set;
+ SELECT_TYPE except_set;
+ int read_count;
+ int write_count;
+ int except_count;
+ /* these lists accumulate ports which are ready due to buffering.
+ their file descriptors don't need to be added to the select sets. */
+ SCM read_ports_ready = SCM_EOL;
+ SCM write_ports_ready = SCM_EOL;
+ int max_fd;
+
+ if (scm_is_simple_vector (reads))
+ {
+ read_count = SCM_SIMPLE_VECTOR_LENGTH (reads);
+ }
+ else
+ {
+ read_count = scm_ilength (reads);
+ SCM_ASSERT (read_count >= 0, reads, SCM_ARG1, FUNC_NAME);
+ }
+ if (scm_is_simple_vector (writes))
+ {
+ write_count = SCM_SIMPLE_VECTOR_LENGTH (writes);
+ }
+ else
+ {
+ write_count = scm_ilength (writes);
+ SCM_ASSERT (write_count >= 0, writes, SCM_ARG2, FUNC_NAME);
+ }
+ if (scm_is_simple_vector (excepts))
+ {
+ except_count = SCM_SIMPLE_VECTOR_LENGTH (excepts);
+ }
+ else
+ {
+ except_count = scm_ilength (excepts);
+ SCM_ASSERT (except_count >= 0, excepts, SCM_ARG3, FUNC_NAME);
+ }
+
+ FD_ZERO (&read_set);
+ FD_ZERO (&write_set);
+ FD_ZERO (&except_set);
+
+ max_fd = fill_select_type (&read_set, &read_ports_ready, reads, SCM_ARG1);
+
+ {
+ int write_max = fill_select_type (&write_set, &write_ports_ready,
+ writes, SCM_ARG2);
+ int except_max = fill_select_type (&except_set, NULL,
+ excepts, SCM_ARG3);
+
+ if (write_max > max_fd)
+ max_fd = write_max;
+ if (except_max > max_fd)
+ max_fd = except_max;
+ }
+
+ /* if there's a port with a ready buffer, don't block, just
+ check for ready file descriptors. */
+ if (!scm_is_null (read_ports_ready) || !scm_is_null (write_ports_ready))
+ {
+ timeout.tv_sec = 0;
+ timeout.tv_usec = 0;
+ time_ptr = &timeout;
+ }
+ else if (SCM_UNBNDP (secs) || scm_is_false (secs))
+ time_ptr = 0;
+ else
+ {
+ if (scm_is_unsigned_integer (secs, 0, ULONG_MAX))
+ {
+ timeout.tv_sec = scm_to_ulong (secs);
+ if (SCM_UNBNDP (usecs))
+ timeout.tv_usec = 0;
+ else
+ timeout.tv_usec = scm_to_long (usecs);
+ }
+ else
+ {
+ double fl = scm_to_double (secs);
+
+ if (!SCM_UNBNDP (usecs))
+ SCM_WRONG_TYPE_ARG (4, secs);
+ if (fl > LONG_MAX)
+ SCM_OUT_OF_RANGE (4, secs);
+ timeout.tv_sec = (long) fl;
+ timeout.tv_usec = (long) ((fl - timeout.tv_sec) * 1000000);
+ }
+ time_ptr = &timeout;
+ }
+
+ {
+ int rv = scm_std_select (max_fd + 1,
+ &read_set, &write_set, &except_set,
+ time_ptr);
+ if (rv < 0)
+ SCM_SYSERROR;
+ }
+ return scm_list_3 (retrieve_select_type (&read_set, read_ports_ready, reads),
+ retrieve_select_type (&write_set, write_ports_ready, writes),
+ retrieve_select_type (&except_set, SCM_EOL, excepts));
+}
+#undef FUNC_NAME
+#endif /* HAVE_SELECT */
+
+\f
+
+#ifdef HAVE_FCNTL
+SCM_DEFINE (scm_fcntl, "fcntl", 2, 1, 0,
+ (SCM object, SCM cmd, SCM value),
+ "Apply @var{command} to the specified file descriptor or the underlying\n"
+ "file descriptor of the specified port. @var{value} is an optional\n"
+ "integer argument.\n\n"
+ "Values for @var{command} are:\n\n"
+ "@table @code\n"
+ "@item F_DUPFD\n"
+ "Duplicate a file descriptor\n"
+ "@item F_GETFD\n"
+ "Get flags associated with the file descriptor.\n"
+ "@item F_SETFD\n"
+ "Set flags associated with the file descriptor to @var{value}.\n"
+ "@item F_GETFL\n"
+ "Get flags associated with the open file.\n"
+ "@item F_SETFL\n"
+ "Set flags associated with the open file to @var{value}\n"
+ "@item F_GETOWN\n"
+ "Get the process ID of a socket's owner, for @code{SIGIO} signals.\n"
+ "@item F_SETOWN\n"
+ "Set the process that owns a socket to @var{value}, for @code{SIGIO} signals.\n"
+ "@item FD_CLOEXEC\n"
+ "The value used to indicate the \"close on exec\" flag with @code{F_GETFL} or\n"
+ "@code{F_SETFL}.\n"
+ "@end table")
+#define FUNC_NAME s_scm_fcntl
+{
+ int rv;
+ int fdes;
+ int ivalue;
+
+ object = SCM_COERCE_OUTPORT (object);
+
+ if (SCM_OPFPORTP (object))
+ fdes = SCM_FPORT_FDES (object);
+ else
+ fdes = scm_to_int (object);
+
+ if (SCM_UNBNDP (value))
+ ivalue = 0;
+ else
+ ivalue = scm_to_int (value);
+
+ SCM_SYSCALL (rv = fcntl (fdes, scm_to_int (cmd), ivalue));
+ if (rv == -1)
+ SCM_SYSERROR;
+ return scm_from_int (rv);
+}
+#undef FUNC_NAME
+#endif /* HAVE_FCNTL */
+
+SCM_DEFINE (scm_fsync, "fsync", 1, 0, 0,
+ (SCM object),
+ "Copies any unwritten data for the specified output file descriptor to disk.\n"
+ "If @var{port/fd} is a port, its buffer is flushed before the underlying\n"
+ "file descriptor is fsync'd.\n"
+ "The return value is unspecified.")
+#define FUNC_NAME s_scm_fsync
+{
+ int fdes;
+
+ object = SCM_COERCE_OUTPORT (object);
+
+ if (SCM_OPFPORTP (object))
+ {
+ scm_flush (object);
+ fdes = SCM_FPORT_FDES (object);
+ }
+ else
+ fdes = scm_to_int (object);
+
+ if (fsync (fdes) == -1)
+ SCM_SYSERROR;
+ return SCM_UNSPECIFIED;
+}
+#undef FUNC_NAME
+
+#ifdef HAVE_SYMLINK
+SCM_DEFINE (scm_symlink, "symlink", 2, 0, 0,
+ (SCM oldpath, SCM newpath),
+ "Create a symbolic link named @var{path-to} with the value (i.e., pointing to)\n"
+ "@var{path-from}. The return value is unspecified.")
+#define FUNC_NAME s_scm_symlink
+{
+ int val;
+
+ STRING2_SYSCALL (oldpath, c_oldpath,
+ newpath, c_newpath,
+ val = symlink (c_oldpath, c_newpath));
+ if (val != 0)
+ SCM_SYSERROR;
+ return SCM_UNSPECIFIED;
+}
+#undef FUNC_NAME
+#endif /* HAVE_SYMLINK */
+
+#ifdef HAVE_READLINK
+SCM_DEFINE (scm_readlink, "readlink", 1, 0, 0,
+ (SCM path),
+ "Return the value of the symbolic link named by @var{path} (a\n"
+ "string), i.e., the file that the link points to.")
+#define FUNC_NAME s_scm_readlink
+{
+ int rv;
+ int size = 100;
+ char *buf;
+ SCM result;
+ char *c_path;
+
+ scm_dynwind_begin (0);
+
+ c_path = scm_to_locale_string (path);
+ scm_dynwind_free (c_path);
+
+ buf = scm_malloc (size);
+
+ while ((rv = readlink (c_path, buf, size)) == size)
+ {
+ free (buf);
+ size *= 2;
+ buf = scm_malloc (size);
+ }
+ if (rv == -1)
+ {
+ int save_errno = errno;
+ free (buf);
+ errno = save_errno;
+ SCM_SYSERROR;
+ }
+ result = scm_take_locale_stringn (buf, rv);
+
+ scm_dynwind_end ();
+ return result;
+}
+#undef FUNC_NAME
+#endif /* HAVE_READLINK */
+
+#ifdef HAVE_LSTAT
+SCM_DEFINE (scm_lstat, "lstat", 1, 0, 0,
+ (SCM str),
+ "Similar to @code{stat}, but does not follow symbolic links, i.e.,\n"
+ "it will return information about a symbolic link itself, not the\n"
+ "file it points to. @var{path} must be a string.")
+#define FUNC_NAME s_scm_lstat
+{
+ int rv;
+ struct stat_or_stat64 stat_temp;
+
+ STRING_SYSCALL (str, c_str, rv = lstat_or_lstat64 (c_str, &stat_temp));
+ if (rv != 0)
+ {
+ int en = errno;
+
+ SCM_SYSERROR_MSG ("~A: ~S",
+ scm_list_2 (scm_strerror (scm_from_int (en)), str),
+ en);
+ }
+ return scm_stat2scm (&stat_temp);
+}
+#undef FUNC_NAME
+#endif /* HAVE_LSTAT */
+
+SCM_DEFINE (scm_copy_file, "copy-file", 2, 0, 0,
+ (SCM oldfile, SCM newfile),
+ "Copy the file specified by @var{path-from} to @var{path-to}.\n"
+ "The return value is unspecified.")
+#define FUNC_NAME s_scm_copy_file
+{
+ char *c_oldfile, *c_newfile;
+ int oldfd, newfd;
+ int n, rv;
+ char buf[BUFSIZ];
+ struct stat_or_stat64 oldstat;
+
+ scm_dynwind_begin (0);
+
+ c_oldfile = scm_to_locale_string (oldfile);
+ scm_dynwind_free (c_oldfile);
+ c_newfile = scm_to_locale_string (newfile);
+ scm_dynwind_free (c_newfile);
+
+ oldfd = open_or_open64 (c_oldfile, O_RDONLY);
+ if (oldfd == -1)
+ SCM_SYSERROR;
+
+#ifdef __MINGW32__
+ SCM_SYSCALL (rv = fstat_Win32 (oldfd, &oldstat));
+#else
+ SCM_SYSCALL (rv = fstat_or_fstat64 (oldfd, &oldstat));
+#endif
+ if (rv == -1)
+ goto err_close_oldfd;
+
+ /* use POSIX flags instead of 07777?. */
+ newfd = open_or_open64 (c_newfile, O_WRONLY | O_CREAT | O_TRUNC,
+ oldstat.st_mode & 07777);
+ if (newfd == -1)
+ {
+ err_close_oldfd:
+ close (oldfd);
+ SCM_SYSERROR;
+ }
+
+ while ((n = read (oldfd, buf, sizeof buf)) > 0)
+ if (write (newfd, buf, n) != n)
+ {
+ close (oldfd);
+ close (newfd);
+ SCM_SYSERROR;
+ }
+ close (oldfd);
+ if (close (newfd) == -1)
+ SCM_SYSERROR;
+
+ scm_dynwind_end ();
+ return SCM_UNSPECIFIED;
+}
+#undef FUNC_NAME
+
+\f
+/* Filename manipulation */
+
+SCM scm_dot_string;
+
+SCM_DEFINE (scm_dirname, "dirname", 1, 0, 0,
+ (SCM filename),
+ "Return the directory name component of the file name\n"
+ "@var{filename}. If @var{filename} does not contain a directory\n"
+ "component, @code{.} is returned.")
+#define FUNC_NAME s_scm_dirname
+{
+ const char *s;
+ long int i;
+ unsigned long int len;
+
+ SCM_VALIDATE_STRING (1, filename);
+
+ s = scm_i_string_chars (filename);
+ len = scm_i_string_length (filename);
+
+ i = len - 1;
+#ifdef __MINGW32__
+ while (i >= 0 && (s[i] == '/' || s[i] == '\\')) --i;
+ while (i >= 0 && (s[i] != '/' && s[i] != '\\')) --i;
+ while (i >= 0 && (s[i] == '/' || s[i] == '\\')) --i;
+#else
+ while (i >= 0 && s[i] == '/') --i;
+ while (i >= 0 && s[i] != '/') --i;
+ while (i >= 0 && s[i] == '/') --i;
+#endif /* ndef __MINGW32__ */
+ if (i < 0)
+ {
+#ifdef __MINGW32__
+ if (len > 0 && (s[0] == '/' || s[0] == '\\'))
+#else
+ if (len > 0 && s[0] == '/')
+#endif /* ndef __MINGW32__ */
+ return scm_c_substring (filename, 0, 1);
+ else
+ return scm_dot_string;
+ }
+ else
+ return scm_c_substring (filename, 0, i + 1);
+}
+#undef FUNC_NAME
+
+SCM_DEFINE (scm_basename, "basename", 1, 1, 0,
+ (SCM filename, SCM suffix),
+ "Return the base name of the file name @var{filename}. The\n"
+ "base name is the file name without any directory components.\n"
+ "If @var{suffix} is provided, and is equal to the end of\n"
+ "@var{basename}, it is removed also.")
+#define FUNC_NAME s_scm_basename
+{
+ const char *f, *s = 0;
+ int i, j, len, end;
+
+ SCM_VALIDATE_STRING (1, filename);
+ f = scm_i_string_chars (filename);
+ len = scm_i_string_length (filename);
+
+ if (SCM_UNBNDP (suffix))
+ j = -1;
+ else
+ {
+ SCM_VALIDATE_STRING (2, suffix);
+ s = scm_i_string_chars (suffix);
+ j = scm_i_string_length (suffix) - 1;
+ }
+ i = len - 1;
+#ifdef __MINGW32__
+ while (i >= 0 && (f[i] == '/' || f[i] == '\\')) --i;
+#else
+ while (i >= 0 && f[i] == '/') --i;
+#endif /* ndef __MINGW32__ */
+ end = i;
+ while (i >= 0 && j >= 0 && f[i] == s[j]) --i, --j;
+ if (j == -1)
+ end = i;
+#ifdef __MINGW32__
+ while (i >= 0 && f[i] != '/' && f[i] != '\\') --i;
+#else
+ while (i >= 0 && f[i] != '/') --i;
+#endif /* ndef __MINGW32__ */
+ if (i == end)
+ {
+#ifdef __MINGW32__
+ if (len > 0 && (f[0] == '/' || f[0] == '\\'))
+#else
+ if (len > 0 && f[0] == '/')
+#endif /* ndef __MINGW32__ */
+ return scm_c_substring (filename, 0, 1);
+ else
+ return scm_dot_string;
+ }
+ else
+ return scm_c_substring (filename, i+1, end+1);
+}
+#undef FUNC_NAME
+
+
+
+\f
+
+void
+scm_init_filesys ()
+{
+ scm_tc16_dir = scm_make_smob_type ("directory", 0);
+ scm_set_smob_free (scm_tc16_dir, scm_dir_free);
+ scm_set_smob_print (scm_tc16_dir, scm_dir_print);
+
+ scm_dot_string = scm_permanent_object (scm_from_locale_string ("."));
+
+#ifdef O_RDONLY
+ scm_c_define ("O_RDONLY", scm_from_int (O_RDONLY));
+#endif
+#ifdef O_WRONLY
+ scm_c_define ("O_WRONLY", scm_from_int (O_WRONLY));
+#endif
+#ifdef O_RDWR
+ scm_c_define ("O_RDWR", scm_from_int (O_RDWR));
+#endif
+#ifdef O_CREAT
+ scm_c_define ("O_CREAT", scm_from_int (O_CREAT));
+#endif
+#ifdef O_EXCL
+ scm_c_define ("O_EXCL", scm_from_int (O_EXCL));
+#endif
+#ifdef O_NOCTTY
+ scm_c_define ("O_NOCTTY", scm_from_int (O_NOCTTY));
+#endif
+#ifdef O_TRUNC
+ scm_c_define ("O_TRUNC", scm_from_int (O_TRUNC));
+#endif
+#ifdef O_APPEND
+ scm_c_define ("O_APPEND", scm_from_int (O_APPEND));
+#endif
+#ifdef O_NONBLOCK
+ scm_c_define ("O_NONBLOCK", scm_from_int (O_NONBLOCK));
+#endif
+#ifdef O_NDELAY
+ scm_c_define ("O_NDELAY", scm_from_int (O_NDELAY));
+#endif
+#ifdef O_SYNC
+ scm_c_define ("O_SYNC", scm_from_int (O_SYNC));
+#endif
+#ifdef O_LARGEFILE
+ scm_c_define ("O_LARGEFILE", scm_from_int (O_LARGEFILE));
+#endif
+
+#ifdef F_DUPFD
+ scm_c_define ("F_DUPFD", scm_from_int (F_DUPFD));
+#endif
+#ifdef F_GETFD
+ scm_c_define ("F_GETFD", scm_from_int (F_GETFD));
+#endif
+#ifdef F_SETFD
+ scm_c_define ("F_SETFD", scm_from_int (F_SETFD));
+#endif
+#ifdef F_GETFL
+ scm_c_define ("F_GETFL", scm_from_int (F_GETFL));
+#endif
+#ifdef F_SETFL
+ scm_c_define ("F_SETFL", scm_from_int (F_SETFL));
+#endif
+#ifdef F_GETOWN
+ scm_c_define ("F_GETOWN", scm_from_int (F_GETOWN));
+#endif
+#ifdef F_SETOWN
+ scm_c_define ("F_SETOWN", scm_from_int (F_SETOWN));
+#endif
+#ifdef FD_CLOEXEC
+ scm_c_define ("FD_CLOEXEC", scm_from_int (FD_CLOEXEC));
+#endif
+
+#include "libguile/filesys.x"
+}
+
+/*
+ Local Variables:
+ c-file-style: "gnu"
+ End:
+*/
projects / lilypond.git / blobdiff