-/* Copyright (C) 1996,1997,1998,1999,2000,2001, 2002, 2004 Free Software Foundation, Inc.
- *
+/* Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2004, 2006,
+ * 2009, 2010, 2011, 2012 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.
+ * modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation; either version 3 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
+ * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301 USA
*/
\f
+/* This file contains POSIX file system access procedures. Procedures
+ essential to the compiler and run-time (`stat', `canonicalize-path',
+ etc.) are compiled even with `--disable-posix'. */
+
/* See stime.c for comments on why _POSIX_C_SOURCE is not always defined. */
-#define _GNU_SOURCE /* ask glibc for everything */
+#define _LARGEFILE64_SOURCE /* ask for stat64 etc */
#ifdef __hpux
#define _POSIX_C_SOURCE 199506L /* for readdir_r */
#endif
-#if HAVE_CONFIG_H
+#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
+#include <alloca.h>
+
+#include <stdlib.h>
#include <stdio.h>
#include <errno.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 <pwd.h>
#endif
+#include <dirent.h>
-#if defined (__MINGW32__) || defined (_MSC_VER) || defined (__BORLANDC__)
-# include "win32-dirent.h"
-# define NAMLEN(dirent) strlen((dirent)->d_name)
-#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__ */
+#define NAMLEN(dirent) strlen ((dirent)->d_name)
/* Some more definitions for the native Windows port. */
#ifdef __MINGW32__
# define fsync(fd) _commit (fd)
# define fchmod(fd, mode) (-1)
#endif /* __MINGW32__ */
+
+
\f
/* Two helper macros for an often used pattern */
do { \
int eno; \
char *cstr1, *cstr2; \
- scm_frame_begin (0); \
+ scm_dynwind_begin (0); \
cstr1 = scm_to_locale_string (str1); \
- scm_frame_free (cstr1); \
+ scm_dynwind_free (cstr1); \
cstr2 = scm_to_locale_string (str2); \
- scm_frame_free (cstr2); \
+ scm_dynwind_free (cstr2); \
SCM_SYSCALL (code); \
- eno = errno; scm_frame_end (); errno = eno; \
+ eno = errno; scm_dynwind_end (); errno = eno; \
} while (0)
\f
+#ifdef HAVE_POSIX
+
/* {Permissions}
*/
#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,
iflags = SCM_NUM2INT (2, flags);
imode = SCM_NUM2INT_DEF (3, mode, 0666);
- STRING_SYSCALL (path, c_path, fd = open (c_path, iflags, imode));
+ STRING_SYSCALL (path, c_path, fd = open_or_open64 (c_path, iflags, imode));
if (fd == -1)
SCM_SYSERROR;
return scm_from_int (fd);
fd = scm_to_int (scm_open_fdes (path, flags, mode));
iflags = SCM_NUM2INT (2, flags);
- if (iflags & O_RDWR)
+
+ if ((iflags & O_RDWR) == O_RDWR)
{
+ /* Opened read-write. */
if (iflags & O_APPEND)
port_mode = "a+";
else if (iflags & O_CREAT)
else
port_mode = "r+";
}
- else {
- if (iflags & O_APPEND)
- port_mode = "a";
- else if (iflags & O_WRONLY)
- port_mode = "w";
- else
- port_mode = "r";
- }
+ else
+ {
+ /* Opened read-only or write-only. */
+ 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
+#endif /* HAVE_POSIX */
+
\f
/* {Files}
*/
SCM_SYMBOL (scm_sym_regular, "regular");
SCM_SYMBOL (scm_sym_directory, "directory");
-#ifdef HAVE_S_ISLNK
+#ifdef S_ISLNK
SCM_SYMBOL (scm_sym_symlink, "symlink");
#endif
SCM_SYMBOL (scm_sym_block_special, "block-special");
SCM_SYMBOL (scm_sym_unknown, "unknown");
static SCM
-scm_stat2scm (struct stat *stat_temp)
+scm_stat2scm (struct stat_or_stat64 *stat_temp)
{
- SCM ans = scm_c_make_vector (15, SCM_UNSPECIFIED);
+ SCM ans = scm_c_make_vector (18, SCM_UNSPECIFIED);
- SCM_VECTOR_SET(ans, 0, scm_from_ulong (stat_temp->st_dev));
- SCM_VECTOR_SET(ans, 1, scm_from_ulong (stat_temp->st_ino));
- SCM_VECTOR_SET(ans, 2, scm_from_ulong (stat_temp->st_mode));
- SCM_VECTOR_SET(ans, 3, scm_from_ulong (stat_temp->st_nlink));
- SCM_VECTOR_SET(ans, 4, scm_from_ulong (stat_temp->st_uid));
- SCM_VECTOR_SET(ans, 5, scm_from_ulong (stat_temp->st_gid));
+ 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_VECTOR_SET(ans, 6, scm_from_ulong (stat_temp->st_rdev));
+ SCM_SIMPLE_VECTOR_SET(ans, 6, scm_from_ulong (stat_temp->st_rdev));
#else
- SCM_VECTOR_SET(ans, 6, SCM_BOOL_F);
+ SCM_SIMPLE_VECTOR_SET(ans, 6, SCM_BOOL_F);
#endif
- SCM_VECTOR_SET(ans, 7, scm_from_ulong (stat_temp->st_size));
- SCM_VECTOR_SET(ans, 8, scm_from_ulong (stat_temp->st_atime));
- SCM_VECTOR_SET(ans, 9, scm_from_ulong (stat_temp->st_mtime));
- SCM_VECTOR_SET(ans, 10, scm_from_ulong (stat_temp->st_ctime));
+ 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_VECTOR_SET(ans, 11, scm_from_ulong (stat_temp->st_blksize));
+ SCM_SIMPLE_VECTOR_SET(ans, 11, scm_from_ulong (stat_temp->st_blksize));
#else
- SCM_VECTOR_SET(ans, 11, scm_from_ulong (4096L));
+ SCM_SIMPLE_VECTOR_SET(ans, 11, scm_from_ulong (4096L));
#endif
#ifdef HAVE_STRUCT_STAT_ST_BLOCKS
- SCM_VECTOR_SET(ans, 12, scm_from_ulong (stat_temp->st_blocks));
+ SCM_SIMPLE_VECTOR_SET(ans, 12, scm_from_blkcnt_t_or_blkcnt64_t (stat_temp->st_blocks));
#else
- SCM_VECTOR_SET(ans, 12, SCM_BOOL_F);
+ SCM_SIMPLE_VECTOR_SET(ans, 12, SCM_BOOL_F);
#endif
{
int mode = stat_temp->st_mode;
if (S_ISREG (mode))
- SCM_VECTOR_SET(ans, 13, scm_sym_regular);
+ SCM_SIMPLE_VECTOR_SET(ans, 13, scm_sym_regular);
else if (S_ISDIR (mode))
- SCM_VECTOR_SET(ans, 13, scm_sym_directory);
-#ifdef HAVE_S_ISLNK
+ 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_VECTOR_SET(ans, 13, scm_sym_symlink);
+ SCM_SIMPLE_VECTOR_SET(ans, 13, scm_sym_symlink);
#endif
else if (S_ISBLK (mode))
- SCM_VECTOR_SET(ans, 13, scm_sym_block_special);
+ SCM_SIMPLE_VECTOR_SET(ans, 13, scm_sym_block_special);
else if (S_ISCHR (mode))
- SCM_VECTOR_SET(ans, 13, scm_sym_char_special);
+ SCM_SIMPLE_VECTOR_SET(ans, 13, scm_sym_char_special);
else if (S_ISFIFO (mode))
- SCM_VECTOR_SET(ans, 13, scm_sym_fifo);
+ SCM_SIMPLE_VECTOR_SET(ans, 13, scm_sym_fifo);
#ifdef S_ISSOCK
else if (S_ISSOCK (mode))
- SCM_VECTOR_SET(ans, 13, scm_sym_sock);
+ SCM_SIMPLE_VECTOR_SET(ans, 13, scm_sym_sock);
#endif
else
- SCM_VECTOR_SET(ans, 13, scm_sym_unknown);
+ SCM_SIMPLE_VECTOR_SET(ans, 13, scm_sym_unknown);
- SCM_VECTOR_SET(ans, 14, scm_from_int ((~S_IFMT) & mode));
+ 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,
tmp <<= 1;
if (S_IXOTH & mode) tmp += 1;
- SCM_VECTOR_SET(ans, 14, scm_from_int (tmp));
+ SCM_SIMPLE_VECTOR_SET(ans, 14, scm_from_int (tmp));
*/
}
+#ifdef HAVE_STRUCT_STAT_ST_ATIM
+ SCM_SIMPLE_VECTOR_SET(ans, 15, scm_from_long (stat_temp->st_atim.tv_nsec));
+#else
+ SCM_SIMPLE_VECTOR_SET(ans, 15, SCM_I_MAKINUM (0));
+#endif
+#ifdef HAVE_STRUCT_STAT_ST_MTIM
+ SCM_SIMPLE_VECTOR_SET(ans, 16, scm_from_long (stat_temp->st_mtim.tv_nsec));
+#else
+ SCM_SIMPLE_VECTOR_SET(ans, 16, SCM_I_MAKINUM (0));
+#endif
+#ifdef HAVE_STRUCT_STAT_ST_CTIM
+ SCM_SIMPLE_VECTOR_SET(ans, 17, scm_from_ulong (stat_temp->st_ctim.tv_sec));
+#else
+ SCM_SIMPLE_VECTOR_SET(ans, 17, SCM_I_MAKINUM (0));
+#endif
return ans;
}
/* 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_mode = _S_IREAD | _S_IWRITE | _S_IEXEC;
buf->st_nlink = 1;
buf->st_atime = buf->st_ctime = buf->st_mtime = time (NULL);
return 0;
}
#endif /* __MINGW32__ */
-SCM_DEFINE (scm_stat, "stat", 1, 0, 0,
- (SCM object),
+SCM_DEFINE (scm_stat, "stat", 1, 1, 0,
+ (SCM object, SCM exception_on_error),
"Return an object containing various information about the file\n"
- "determined by @var{obj}. @var{obj} can be a string containing\n"
+ "determined by @var{object}. @var{object} 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"
+ "If the optional @var{exception_on_error} argument is true, which\n"
+ "is the default, an exception will be raised if the underlying\n"
+ "system call returns an error, for example if the file is not\n"
+ "found or is not readable. Otherwise, an error will cause\n"
+ "@code{stat} to return @code{#f}."
+ "\n"
+ "The object returned by a successful call to @code{stat} can be\n"
+ "passed as a single parameter to the following procedures, all of\n"
+ "which return integers:\n"
"\n"
"@table @code\n"
"@item stat:dev\n"
{
int rv;
int fdes;
- struct stat stat_temp;
+ 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 (scm_to_int (object), &stat_temp));
+ SCM_SYSCALL (rv = fstat_or_fstat64 (scm_to_int (object), &stat_temp));
#endif
}
else if (scm_is_string (object))
while (p > file && (*p == '/' || *p == '\\'))
*p-- = '\0';
#endif
- SCM_SYSCALL (rv = stat (file, &stat_temp));
+ SCM_SYSCALL (rv = stat_or_stat64 (file, &stat_temp));
free (file);
}
else
#ifdef __MINGW32__
SCM_SYSCALL (rv = fstat_Win32 (fdes, &stat_temp));
#else
- SCM_SYSCALL (rv = fstat (fdes, &stat_temp));
+ SCM_SYSCALL (rv = fstat_or_fstat64 (fdes, &stat_temp));
#endif
}
if (rv == -1)
+ {
+ if (SCM_UNBNDP (exception_on_error) || scm_is_true (exception_on_error))
+ {
+ int en = errno;
+ SCM_SYSERROR_MSG ("~A: ~S",
+ scm_list_2 (scm_strerror (scm_from_int (en)),
+ object),
+ en);
+ }
+ else
+ return SCM_BOOL_F;
+ }
+ return scm_stat2scm (&stat_temp);
+}
+#undef FUNC_NAME
+
+#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{str} 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)),
- object),
+ scm_list_2 (scm_strerror (scm_from_int (en)), str),
en);
}
return scm_stat2scm (&stat_temp);
}
#undef FUNC_NAME
+#endif /* HAVE_LSTAT */
\f
+#ifdef HAVE_POSIX
+
/* {Modifying Directories}
*/
#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;
+\f
+/* {Navigating Directories}
+ */
- 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"
+SCM_DEFINE (scm_chdir, "chdir", 1, 0, 0,
+ (SCM str),
+ "Change the current working directory to @var{str}.\n"
"The return value is unspecified.")
-#define FUNC_NAME s_scm_rename
+#define FUNC_NAME s_scm_chdir
{
- int rv;
+ int ans;
- STRING2_SYSCALL (oldname, c_oldname,
- newname, c_newname,
- rv = my_rename (c_oldname, c_newname));
- if (rv != 0)
+ STRING_SYSCALL (str, c_str, ans = chdir (c_str));
+ if (ans != 0)
SCM_SYSERROR;
return SCM_UNSPECIFIED;
}
#undef FUNC_NAME
+\f
-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_SELECT
-#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
+/* 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 rv;
- mode_t mask;
+ int fd;
- if (SCM_UNBNDP (mode))
+ if (scm_is_integer (element))
{
- mask = umask (0);
- umask (mask);
- STRING_SYSCALL (path, c_path, rv = mkdir (c_path, 0777 ^ mask));
+ fd = scm_to_int (element);
}
else
{
- STRING_SYSCALL (path, c_path, rv = mkdir (c_path, scm_to_uint (mode)));
+ 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 (rv != 0)
- SCM_SYSERROR;
- return SCM_UNSPECIFIED;
+ if (fd == -1)
+ *ports_ready = scm_cons (element, *ports_ready);
+ else
+ FD_SET (fd, set);
+ return fd;
}
-#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
+/* 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 val;
+ int max_fd = 0;
- 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 worry
- about this 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 *rdent;
-
- SCM_VALIDATE_DIR (1, port);
- if (!SCM_DIR_OPEN_P (port))
- SCM_MISC_ERROR ("Directory ~S is not open.", scm_list_1 (port));
-
- errno = 0;
- {
-#if HAVE_READDIR_R
- /* On Solaris 2.7, struct dirent only contains "char d_name[1]" and one is
- expected to provide a buffer of "sizeof(struct dirent) + NAME_MAX"
- bytes. The glibc 2.3.2 manual notes this sort of thing too, and
- advises "offsetof(struct dirent,d_name) + NAME_MAX + 1". Either should
- suffice, we give both to be certain. */
- union {
- struct dirent ent;
- char pad1 [sizeof(struct dirent) + NAME_MAX];
- char pad2 [offsetof (struct dirent, d_name) + NAME_MAX + 1];
- } u;
- SCM_SYSCALL (readdir_r ((DIR *) SCM_CELL_WORD_1 (port), &u.ent, &rdent));
-#else
- SCM_SYSCALL (rdent = readdir ((DIR *) SCM_CELL_WORD_1 (port)));
-#endif
- if (errno != 0)
- SCM_SYSERROR;
-
- return (rdent ? scm_from_locale_stringn (rdent->d_name, NAMLEN (rdent))
- : SCM_EOF_VAL);
- }
-}
-#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_intprint (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_VECTORP (list_or_vec))
- {
- int i = SCM_VECTOR_LENGTH (list_or_vec);
- SCM const *ve = SCM_VELTS (list_or_vec);
-
- while (--i >= 0)
- {
- int fd = set_element (set, ports_ready, ve[i], pos);
+ 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;
{
SCM answer_list = ports_ready;
- if (SCM_VECTORP (list_or_vec))
+ if (scm_is_simple_vector (list_or_vec))
{
- int i = SCM_VECTOR_LENGTH (list_or_vec);
- SCM const *ve = SCM_VELTS (list_or_vec);
+ int i = SCM_SIMPLE_VECTOR_LENGTH (list_or_vec);
while (--i >= 0)
{
- answer_list = get_element (set, ve[i], answer_list);
+ answer_list = get_element (set,
+ SCM_SIMPLE_VECTOR_REF (list_or_vec, i),
+ answer_list);
}
return scm_vector (answer_list);
}
SCM write_ports_ready = SCM_EOL;
int max_fd;
- if (SCM_VECTORP (reads))
+ if (scm_is_simple_vector (reads))
{
- read_count = SCM_VECTOR_LENGTH (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_VECTORP (writes))
+ if (scm_is_simple_vector (writes))
{
- write_count = SCM_VECTOR_LENGTH (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_VECTORP (excepts))
+ if (scm_is_simple_vector (excepts))
{
- except_count = SCM_VECTOR_LENGTH (excepts);
+ except_count = SCM_SIMPLE_VECTOR_LENGTH (excepts);
}
else
{
}
{
- int rv = scm_internal_select (max_fd + 1,
- &read_set, &write_set, &except_set,
- time_ptr);
+ int rv = scm_std_select (max_fd + 1,
+ &read_set, &write_set, &except_set,
+ time_ptr);
if (rv < 0)
SCM_SYSERROR;
}
#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"
+ "Apply @var{cmd} 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"
+ "Values for @var{cmd} are:\n\n"
"@table @code\n"
"@item F_DUPFD\n"
"Duplicate a file descriptor\n"
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"
+ "Copies any unwritten data for the specified output file\n"
+ "descriptor to disk. If @var{object} is a port, its buffer is\n"
+ "flushed before the underlying file descriptor is fsync'd.\n"
"The return value is unspecified.")
#define FUNC_NAME s_scm_fsync
{
#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.")
+ "Create a symbolic link named @var{oldpath} with the value\n"
+ "(i.e., pointing to) @var{newpath}. The return value is\n"
+ "unspecified.")
#define FUNC_NAME s_scm_symlink
{
int val;
SCM result;
char *c_path;
- scm_frame_begin (0);
+ scm_dynwind_begin (0);
c_path = scm_to_locale_string (path);
- scm_frame_free (c_path);
+ scm_dynwind_free (c_path);
buf = scm_malloc (size);
}
result = scm_take_locale_stringn (buf, rv);
- scm_frame_end ();
+ 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 stat_temp;
-
- STRING_SYSCALL (str, c_str, rv = lstat (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"
+ "Copy the file specified by @var{oldfile} to @var{newfile}.\n"
"The return value is unspecified.")
#define FUNC_NAME s_scm_copy_file
{
int oldfd, newfd;
int n, rv;
char buf[BUFSIZ];
- struct stat oldstat;
+ struct stat_or_stat64 oldstat;
- scm_frame_begin (0);
+ scm_dynwind_begin (0);
c_oldfile = scm_to_locale_string (oldfile);
- scm_frame_free (c_oldfile);
+ scm_dynwind_free (c_oldfile);
c_newfile = scm_to_locale_string (newfile);
- scm_frame_free (c_newfile);
+ scm_dynwind_free (c_newfile);
- oldfd = open (c_oldfile, O_RDONLY);
+ 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 (oldfd, &oldstat));
+ SCM_SYSCALL (rv = fstat_or_fstat64 (oldfd, &oldstat));
#endif
if (rv == -1)
goto err_close_oldfd;
/* use POSIX flags instead of 07777?. */
- newfd = open (c_newfile, O_WRONLY | O_CREAT | O_TRUNC,
- oldstat.st_mode & 07777);
+ newfd = open_or_open64 (c_newfile, O_WRONLY | O_CREAT | O_TRUNC,
+ oldstat.st_mode & 07777);
if (newfd == -1)
{
err_close_oldfd:
if (close (newfd) == -1)
SCM_SYSERROR;
- scm_frame_end ();
+ scm_dynwind_end ();
return SCM_UNSPECIFIED;
}
#undef FUNC_NAME
-\f
-/* Filename manipulation */
+#endif /* HAVE_POSIX */
-SCM scm_dot_string;
+\f
+/* Essential procedures used in (system base compile). */
-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
+#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
{
- const char *s;
- long int i;
- unsigned long int len;
-
- SCM_VALIDATE_STRING (1, filename);
+ 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 */
+
+#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
+
+#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{str}.")
+#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
+
+SCM_DEFINE (scm_access, "access?", 2, 0, 0,
+ (SCM path, SCM how),
+ "Test accessibility of a file under the real UID and GID of the\n"
+ "calling process. The return is @code{#t} if @var{path} exists\n"
+ "and the permissions requested by @var{how} are all allowed, or\n"
+ "@code{#f} if not.\n"
+ "\n"
+ "@var{how} is an integer which is one of the following values,\n"
+ "or a bitwise-OR (@code{logior}) of multiple values.\n"
+ "\n"
+ "@defvar R_OK\n"
+ "Test for read permission.\n"
+ "@end defvar\n"
+ "@defvar W_OK\n"
+ "Test for write permission.\n"
+ "@end defvar\n"
+ "@defvar X_OK\n"
+ "Test for execute permission.\n"
+ "@end defvar\n"
+ "@defvar F_OK\n"
+ "Test for existence of the file. This is implied by each of the\n"
+ "other tests, so there's no need to combine it with them.\n"
+ "@end defvar\n"
+ "\n"
+ "It's important to note that @code{access?} does not simply\n"
+ "indicate what will happen on attempting to read or write a\n"
+ "file. In normal circumstances it does, but in a set-UID or\n"
+ "set-GID program it doesn't because @code{access?} tests the\n"
+ "real ID, whereas an open or execute attempt uses the effective\n"
+ "ID.\n"
+ "\n"
+ "A program which will never run set-UID/GID can ignore the\n"
+ "difference between real and effective IDs, but for maximum\n"
+ "generality, especially in library functions, it's best not to\n"
+ "use @code{access?} to predict the result of an open or execute,\n"
+ "instead simply attempt that and catch any exception.\n"
+ "\n"
+ "The main use for @code{access?} is to let a set-UID/GID program\n"
+ "determine what the invoking user would have been allowed to do,\n"
+ "without the greater (or perhaps lesser) privileges afforded by\n"
+ "the effective ID. For more on this, see ``Testing File\n"
+ "Access'' in The GNU C Library Reference Manual.")
+#define FUNC_NAME s_scm_access
+{
+ int rv;
+ char *c_path;
+
+ c_path = scm_to_locale_string (path);
+ rv = access (c_path, scm_to_int (how));
+ free (c_path);
+
+ return scm_from_bool (!rv);
+}
+#undef FUNC_NAME
+
+SCM_DEFINE (scm_chmod, "chmod", 2, 0, 0,
+ (SCM object, SCM mode),
+ "Changes the permissions of the file referred to by\n"
+ "@var{object}. @var{object} can be a string containing a file\n"
+ "name or a port or integer file descriptor which is open on a\n"
+ "file (in which case @code{fchmod} is used as the underlying\n"
+ "system call). @var{mode} specifies the new permissions as a\n"
+ "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
+
+#ifndef HAVE_MKSTEMP
+extern int mkstemp (char *);
+#endif
+
+SCM_DEFINE (scm_mkstemp, "mkstemp!", 1, 0, 0,
+ (SCM tmpl),
+ "Create a new unique file in the file system and return a new\n"
+ "buffered port open for reading and writing to the file.\n"
+ "\n"
+ "@var{tmpl} is a string specifying where the file should be\n"
+ "created: it must end with @samp{XXXXXX} and those @samp{X}s\n"
+ "will be changed in the string to return the name of the file.\n"
+ "(@code{port-filename} on the port also gives the name.)\n"
+ "\n"
+ "POSIX doesn't specify the permissions mode of the file, on GNU\n"
+ "and most systems it's @code{#o600}. An application can use\n"
+ "@code{chmod} to relax that if desired. For example\n"
+ "@code{#o666} less @code{umask}, which is usual for ordinary\n"
+ "file creation,\n"
+ "\n"
+ "@example\n"
+ "(let ((port (mkstemp! (string-copy \"/tmp/myfile-XXXXXX\"))))\n"
+ " (chmod port (logand #o666 (lognot (umask))))\n"
+ " ...)\n"
+ "@end example")
+#define FUNC_NAME s_scm_mkstemp
+{
+ char *c_tmpl;
+ int rv;
+
+ scm_dynwind_begin (0);
+
+ c_tmpl = scm_to_locale_string (tmpl);
+ scm_dynwind_free (c_tmpl);
+
+ SCM_SYSCALL (rv = mkstemp (c_tmpl));
+ if (rv == -1)
+ SCM_SYSERROR;
+
+ scm_substring_move_x (scm_from_locale_string (c_tmpl),
+ SCM_INUM0, scm_string_length (tmpl),
+ tmpl, SCM_INUM0);
+
+ scm_dynwind_end ();
+ return scm_fdes_to_port (rv, "w+", tmpl);
+}
+#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
+{
+ 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;
+ while (i >= 0 && (scm_i_string_ref (filename, i) == '/'
+ || scm_i_string_ref (filename, i) == '\\'))
+ --i;
+ while (i >= 0 && (scm_i_string_ref (filename, i) != '/'
+ && scm_i_string_ref (filename, i) != '\\'))
+ --i;
+ while (i >= 0 && (scm_i_string_ref (filename, i) == '/'
+ || scm_i_string_ref (filename, i) == '\\'))
+ --i;
#else
- while (i >= 0 && s[i] == '/') --i;
- while (i >= 0 && s[i] != '/') --i;
- while (i >= 0 && s[i] == '/') --i;
+ while (i >= 0 && scm_i_string_ref (filename, i) == '/')
+ --i;
+ while (i >= 0 && scm_i_string_ref (filename, i) != '/')
+ --i;
+ while (i >= 0 && scm_i_string_ref (filename, i) == '/')
+ --i;
#endif /* ndef __MINGW32__ */
if (i < 0)
{
#ifdef __MINGW32__
- if (len > 0 && (s[0] == '/' || s[0] == '\\'))
+ if (len > 0 && (scm_i_string_ref (filename, 0) == '/'
+ || scm_i_string_ref (filename, 0) == '\\'))
#else
- if (len > 0 && s[0] == '/')
+ if (len > 0 && scm_i_string_ref (filename, 0) == '/')
#endif /* ndef __MINGW32__ */
return scm_c_substring (filename, 0, 1);
else
"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.")
+ "@var{filename}, 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))
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;
+ while (i >= 0 && (scm_i_string_ref (filename, i) == '/'
+ || scm_i_string_ref (filename, i) == '\\'))
+ --i;
#else
- while (i >= 0 && f[i] == '/') --i;
+ while (i >= 0 && scm_i_string_ref (filename, i) == '/')
+ --i;
#endif /* ndef __MINGW32__ */
end = i;
- while (i >= 0 && j >= 0 && f[i] == s[j]) --i, --j;
+ while (i >= 0 && j >= 0
+ && (scm_i_string_ref (filename, i)
+ == scm_i_string_ref (suffix, j)))
+ {
+ --i;
+ --j;
+ }
if (j == -1)
end = i;
#ifdef __MINGW32__
- while (i >= 0 && f[i] != '/' && f[i] != '\\') --i;
+ while (i >= 0 && (scm_i_string_ref (filename, i) != '/'
+ && scm_i_string_ref (filename, i) != '\\'))
+ --i;
#else
- while (i >= 0 && f[i] != '/') --i;
+ while (i >= 0 && scm_i_string_ref (filename, i) != '/')
+ --i;
#endif /* ndef __MINGW32__ */
if (i == end)
{
#ifdef __MINGW32__
- if (len > 0 && (f[0] == '/' || f[0] == '\\'))
+ if (len > 0 && (scm_i_string_ref (filename, 0) == '/'
+ || scm_i_string_ref (filename, 0) == '\\'))
#else
- if (len > 0 && f[0] == '/')
+ if (len > 0 && scm_i_string_ref (filename, 0) == '/')
#endif /* ndef __MINGW32__ */
- return scm_c_substring (filename, 0, 1);
+ return scm_c_substring (filename, 0, 1);
else
return scm_dot_string;
}
}
#undef FUNC_NAME
+SCM_DEFINE (scm_canonicalize_path, "canonicalize-path", 1, 0, 0,
+ (SCM path),
+ "Return the canonical path of @var{path}. A canonical path has\n"
+ "no @code{.} or @code{..} components, nor any repeated path\n"
+ "separators (@code{/}) nor symlinks.\n\n"
+ "Raises an error if any component of @var{path} does not exist.")
+#define FUNC_NAME s_scm_canonicalize_path
+{
+ char *str, *canon;
+
+ SCM_VALIDATE_STRING (1, path);
+
+ str = scm_to_locale_string (path);
+ canon = canonicalize_file_name (str);
+ free (str);
+
+ if (canon)
+ return scm_take_locale_string (canon);
+ else
+ SCM_SYSERROR;
+}
+#undef FUNC_NAME
+
+SCM
+scm_i_relativize_path (SCM path, SCM in_path)
+{
+ char *str, *canon;
+ SCM scanon;
+
+ str = scm_to_locale_string (path);
+ canon = canonicalize_file_name (str);
+ free (str);
+
+ if (!canon)
+ return SCM_BOOL_F;
+ scanon = scm_take_locale_string (canon);
+
+ for (; scm_is_pair (in_path); in_path = scm_cdr (in_path))
+ if (scm_is_true (scm_string_prefix_p (scm_car (in_path),
+ scanon,
+ SCM_UNDEFINED, SCM_UNDEFINED,
+ SCM_UNDEFINED, SCM_UNDEFINED)))
+ {
+ size_t len = scm_c_string_length (scm_car (in_path));
+
+ /* The path either has a trailing delimiter or doesn't. scanon will be
+ delimited by single delimiters. In the case in which the path does
+ not have a trailing delimiter, add one to the length to strip off the
+ delimiter within scanon. */
+ if (!len
+#ifdef __MINGW32__
+ || (scm_i_string_ref (scm_car (in_path), len - 1) != '/'
+ && scm_i_string_ref (scm_car (in_path), len - 1) != '\\')
+#else
+ || scm_i_string_ref (scm_car (in_path), len - 1) != '/'
+#endif
+ )
+ len++;
+
+ if (scm_c_string_length (scanon) > len)
+ return scm_substring (scanon, scm_from_size_t (len), SCM_UNDEFINED);
+ else
+ return SCM_BOOL_F;
+ }
+
+ return SCM_BOOL_F;
+}
+
+\f
+/* Examining directories. These procedures are used by `check-guile'
+ and thus compiled unconditionally. */
+
+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{obj} 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{dirname} 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<<16), 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{port}. 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_SMOB_DATA_1 (port);
+#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;
+
+ 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_SMOB_DATA_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{port} 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_SMOB_DATA_1 (port));
+
+ return SCM_UNSPECIFIED;
+}
+#undef FUNC_NAME
+
+
+SCM_DEFINE (scm_closedir, "closedir", 1, 0, 0,
+ (SCM port),
+ "Close the directory stream @var{port}.\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_SMOB_DATA_1 (port)));
+ if (sts != 0)
+ SCM_SYSERROR;
+
+ SCM_SET_SMOB_DATA_0 (port, scm_tc16_dir);
+ }
+
+ return SCM_UNSPECIFIED;
+}
+#undef FUNC_NAME
+
+
+#ifdef HAVE_POSIX
+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_SMOB_DATA_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_SMOB_DATA_1 (p));
+ return 0;
+}
+#endif
\f
void
scm_init_filesys ()
{
+#ifdef HAVE_POSIX
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_long (O_RDONLY));
+ scm_c_define ("O_RDONLY", scm_from_int (O_RDONLY));
#endif
#ifdef O_WRONLY
- scm_c_define ("O_WRONLY", scm_from_long (O_WRONLY));
+ scm_c_define ("O_WRONLY", scm_from_int (O_WRONLY));
#endif
#ifdef O_RDWR
- scm_c_define ("O_RDWR", scm_from_long (O_RDWR));
+ scm_c_define ("O_RDWR", scm_from_int (O_RDWR));
#endif
#ifdef O_CREAT
- scm_c_define ("O_CREAT", scm_from_long (O_CREAT));
+ scm_c_define ("O_CREAT", scm_from_int (O_CREAT));
#endif
#ifdef O_EXCL
- scm_c_define ("O_EXCL", scm_from_long (O_EXCL));
+ scm_c_define ("O_EXCL", scm_from_int (O_EXCL));
#endif
#ifdef O_NOCTTY
- scm_c_define ("O_NOCTTY", scm_from_long (O_NOCTTY));
+ scm_c_define ("O_NOCTTY", scm_from_int (O_NOCTTY));
#endif
#ifdef O_TRUNC
- scm_c_define ("O_TRUNC", scm_from_long (O_TRUNC));
+ scm_c_define ("O_TRUNC", scm_from_int (O_TRUNC));
#endif
#ifdef O_APPEND
- scm_c_define ("O_APPEND", scm_from_long (O_APPEND));
+ scm_c_define ("O_APPEND", scm_from_int (O_APPEND));
#endif
#ifdef O_NONBLOCK
- scm_c_define ("O_NONBLOCK", scm_from_long (O_NONBLOCK));
+ scm_c_define ("O_NONBLOCK", scm_from_int (O_NONBLOCK));
#endif
#ifdef O_NDELAY
- scm_c_define ("O_NDELAY", scm_from_long (O_NDELAY));
+ scm_c_define ("O_NDELAY", scm_from_int (O_NDELAY));
#endif
#ifdef O_SYNC
- scm_c_define ("O_SYNC", scm_from_long (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 O_NOTRANS
+ scm_c_define ("O_NOTRANS", scm_from_int (O_NOTRANS));
+#endif
#ifdef F_DUPFD
- scm_c_define ("F_DUPFD", scm_from_long (F_DUPFD));
+ scm_c_define ("F_DUPFD", scm_from_int (F_DUPFD));
#endif
#ifdef F_GETFD
- scm_c_define ("F_GETFD", scm_from_long (F_GETFD));
+ scm_c_define ("F_GETFD", scm_from_int (F_GETFD));
#endif
#ifdef F_SETFD
- scm_c_define ("F_SETFD", scm_from_long (F_SETFD));
+ scm_c_define ("F_SETFD", scm_from_int (F_SETFD));
#endif
#ifdef F_GETFL
- scm_c_define ("F_GETFL", scm_from_long (F_GETFL));
+ scm_c_define ("F_GETFL", scm_from_int (F_GETFL));
#endif
#ifdef F_SETFL
- scm_c_define ("F_SETFL", scm_from_long (F_SETFL));
+ scm_c_define ("F_SETFL", scm_from_int (F_SETFL));
#endif
#ifdef F_GETOWN
- scm_c_define ("F_GETOWN", scm_from_long (F_GETOWN));
+ scm_c_define ("F_GETOWN", scm_from_int (F_GETOWN));
#endif
#ifdef F_SETOWN
- scm_c_define ("F_SETOWN", scm_from_long (F_SETOWN));
+ scm_c_define ("F_SETOWN", scm_from_int (F_SETOWN));
#endif
#ifdef FD_CLOEXEC
- scm_c_define ("FD_CLOEXEC", scm_from_long (FD_CLOEXEC));
+ scm_c_define ("FD_CLOEXEC", scm_from_int (FD_CLOEXEC));
#endif
+#endif /* HAVE_POSIX */
+
+ /* `access' symbols. */
+ scm_c_define ("R_OK", scm_from_int (R_OK));
+ scm_c_define ("W_OK", scm_from_int (W_OK));
+ scm_c_define ("X_OK", scm_from_int (X_OK));
+ scm_c_define ("F_OK", scm_from_int (F_OK));
+
+ scm_dot_string = scm_from_locale_string (".");
#include "libguile/filesys.x"
}
HCoop / bpt / guile.git / blobdiff