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/*
* This file is covered by the Ruby license. See COPYING for more details.
*
* Copyright (C) 2007-2011, Apple Inc. All rights reserved.
* Copyright (C) 1993-2007 Yukihiro Matsumoto
* Copyright (C) 2000 Network Applied Communication Laboratory, Inc.
* Copyright (C) 2000 Information-technology Promotion Agency, Japan
*/
#include "macruby_internal.h"
#include "ruby/io.h"
#include "ruby/signal.h"
#include "ruby/util.h"
#include "ruby/node.h"
#include "dln.h"
#include "objc.h"
#include "vm.h"
#include "encoding.h"
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifdef HAVE_SYS_FILE_H
# include <sys/file.h>
#else
int flock(int, int);
#endif
#ifdef HAVE_SYS_PARAM_H
# include <sys/param.h>
#endif
#ifndef MAXPATHLEN
# define MAXPATHLEN 1024
#endif
#include <ctype.h>
#include <time.h>
#ifdef HAVE_UTIME_H
#include <utime.h>
#elif defined HAVE_SYS_UTIME_H
#include <sys/utime.h>
#endif
#ifdef HAVE_PWD_H
#include <pwd.h>
#endif
#include <sys/types.h>
#include <sys/stat.h>
#ifdef HAVE_SYS_MKDEV_H
#include <sys/mkdev.h>
#endif
#if !defined HAVE_LSTAT && !defined lstat
#define lstat stat
#endif
#ifdef __BEOS__ /* should not change ID if -1 */
static int
be_chown(const char *path, uid_t owner, gid_t group)
{
if (owner == -1 || group == -1) {
struct stat st;
if (stat(path, &st) < 0) return -1;
if (owner == -1) owner = st.st_uid;
if (group == -1) group = st.st_gid;
}
return chown(path, owner, group);
}
#define chown be_chown
static int
be_fchown(int fd, uid_t owner, gid_t group)
{
if (owner == -1 || group == -1) {
struct stat st;
if (fstat(fd, &st) < 0) return -1;
if (owner == -1) owner = st.st_uid;
if (group == -1) group = st.st_gid;
}
return fchown(fd, owner, group);
}
#define fchown be_fchown
#endif /* __BEOS__ */
VALUE rb_cFile;
VALUE rb_mFileTest;
VALUE rb_cStat;
static SEL selToPath = 0;
static VALUE
rb_get_path_check(VALUE obj, int check)
{
VALUE tmp;
if (check) {
rb_check_safe_obj(obj);
}
if (rb_vm_respond_to(obj, selToPath, true)) {
tmp = rb_vm_call(obj, selToPath, 0, NULL);
}
else {
tmp = rb_check_string_type(obj);
if (NIL_P(tmp)) {
tmp = obj;
}
}
StringValueCStr(tmp);
if (check && obj != tmp) {
rb_check_safe_obj(tmp);
}
return rb_str_new4(tmp);
}
VALUE
rb_get_path_no_checksafe(VALUE obj)
{
return rb_get_path_check(obj, 0);
}
VALUE
rb_get_path(VALUE obj)
{
return rb_get_path_check(obj, 1);
}
static long
apply2files(void (*func)(const char *, void *), long argc, VALUE *argv,
void *arg)
{
rb_secure(4);
for (long i = 0; i < argc; i++) {
VALUE path = rb_get_path(argv[i]);
(*func)(StringValueCStr(path), arg);
}
return argc;
}
/*
* call-seq:
* file.path -> filename
*
* Returns the pathname used to create <i>file</i> as a string. Does
* not normalize the name.
*
* File.new("testfile").path #=> "testfile"
* File.new("/tmp/../tmp/xxx", "w").path #=> "/tmp/../tmp/xxx"
*
*/
static VALUE
rb_file_path(VALUE obj, SEL sel)
{
rb_io_t *io = ExtractIOStruct(obj);
return io->path == 0 ? Qnil : io->path;
}
static VALUE
stat_new_0(VALUE klass, struct stat *st)
{
struct stat *nst = 0;
if (st != NULL) {
nst = ALLOC(struct stat);
*nst = *st;
}
return Data_Wrap_Struct(klass, NULL, xfree, nst);
}
static VALUE
stat_new(struct stat *st)
{
return stat_new_0(rb_cStat, st);
}
static struct stat*
get_stat(VALUE self)
{
struct stat* st;
Data_Get_Struct(self, struct stat, st);
if (!st) rb_raise(rb_eTypeError, "uninitialized File::Stat");
return st;
}
static struct timespec stat_mtimespec(struct stat *st);
/*
* call-seq:
* stat <=> other_stat => -1, 0, 1
*
* Compares <code>File::Stat</code> objects by comparing their
* respective modification times.
*
* f1 = File.new("f1", "w")
* sleep 1
* f2 = File.new("f2", "w")
* f1.stat <=> f2.stat #=> -1
*/
static VALUE
rb_stat_cmp(VALUE self, SEL sel, VALUE other)
{
if (rb_obj_is_kind_of(other, rb_obj_class(self))) {
struct timespec ts1 = stat_mtimespec(get_stat(self));
struct timespec ts2 = stat_mtimespec(get_stat(other));
if (ts1.tv_sec == ts2.tv_sec) {
if (ts1.tv_nsec == ts2.tv_nsec) return INT2FIX(0);
if (ts1.tv_nsec < ts2.tv_nsec) return INT2FIX(-1);
return INT2FIX(1);
}
if (ts1.tv_sec < ts2.tv_sec) return INT2FIX(-1);
return INT2FIX(1);
}
return Qnil;
}
/*
* call-seq:
* stat.dev => fixnum
*
* Returns an integer representing the device on which <i>stat</i>
* resides.
*
* File.stat("testfile").dev #=> 774
*/
static VALUE
rb_stat_dev(VALUE self, SEL sel)
{
return INT2NUM(get_stat(self)->st_dev);
}
/*
* call-seq:
* stat.dev_major => fixnum
*
* Returns the major part of <code>File_Stat#dev</code> or
* <code>nil</code>.
*
* File.stat("/dev/fd1").dev_major #=> 2
* File.stat("/dev/tty").dev_major #=> 5
*/
static VALUE
rb_stat_dev_major(VALUE self, SEL sel)
{
#if defined(major)
long dev = get_stat(self)->st_dev;
return ULONG2NUM(major(dev));
#else
return Qnil;
#endif
}
/*
* call-seq:
* stat.dev_minor => fixnum
*
* Returns the minor part of <code>File_Stat#dev</code> or
* <code>nil</code>.
*
* File.stat("/dev/fd1").dev_minor #=> 1
* File.stat("/dev/tty").dev_minor #=> 0
*/
static VALUE
rb_stat_dev_minor(VALUE self, SEL sel)
{
#if defined(minor)
long dev = get_stat(self)->st_dev;
return ULONG2NUM(minor(dev));
#else
return Qnil;
#endif
}
/*
* call-seq:
* stat.ino => fixnum
*
* Returns the inode number for <i>stat</i>.
*
* File.stat("testfile").ino #=> 1083669
*
*/
static VALUE
rb_stat_ino(VALUE self, SEL sel)
{
#ifdef HUGE_ST_INO
return ULL2NUM(get_stat(self)->st_ino);
#else
return ULONG2NUM(get_stat(self)->st_ino);
#endif
}
/*
* call-seq:
* stat.mode => fixnum
*
* Returns an integer representing the permission bits of
* <i>stat</i>. The meaning of the bits is platform dependent; on
* Unix systems, see <code>stat(2)</code>.
*
* File.chmod(0644, "testfile") #=> 1
* s = File.stat("testfile")
* sprintf("%o", s.mode) #=> "100644"
*/
static VALUE
rb_stat_mode(VALUE self, SEL sel)
{
#ifdef __BORLANDC__
return UINT2NUM((unsigned short)(get_stat(self)->st_mode));
#else
return UINT2NUM(get_stat(self)->st_mode);
#endif
}
/*
* call-seq:
* stat.nlink => fixnum
*
* Returns the number of hard links to <i>stat</i>.
*
* File.stat("testfile").nlink #=> 1
* File.link("testfile", "testfile.bak") #=> 0
* File.stat("testfile").nlink #=> 2
*
*/
static VALUE
rb_stat_nlink(VALUE self, SEL sel)
{
return UINT2NUM(get_stat(self)->st_nlink);
}
/*
* call-seq:
* stat.uid => fixnum
*
* Returns the numeric user id of the owner of <i>stat</i>.
*
* File.stat("testfile").uid #=> 501
*
*/
static VALUE
rb_stat_uid(VALUE self, SEL sel)
{
return UIDT2NUM(get_stat(self)->st_uid);
}
/*
* call-seq:
* stat.gid => fixnum
*
* Returns the numeric group id of the owner of <i>stat</i>.
*
* File.stat("testfile").gid #=> 500
*
*/
static VALUE
rb_stat_gid(VALUE self, SEL sel)
{
return GIDT2NUM(get_stat(self)->st_gid);
}
/*
* call-seq:
* stat.rdev => fixnum or nil
*
* Returns an integer representing the device type on which
* <i>stat</i> resides. Returns <code>nil</code> if the operating
* system doesn't support this feature.
*
* File.stat("/dev/fd1").rdev #=> 513
* File.stat("/dev/tty").rdev #=> 1280
*/
static VALUE
rb_stat_rdev(VALUE self, SEL sel)
{
#ifdef HAVE_ST_RDEV
return ULONG2NUM(get_stat(self)->st_rdev);
#else
return Qnil;
#endif
}
/*
* call-seq:
* stat.rdev_major => fixnum
*
* Returns the major part of <code>File_Stat#rdev</code> or
* <code>nil</code>.
*
* File.stat("/dev/fd1").rdev_major #=> 2
* File.stat("/dev/tty").rdev_major #=> 5
*/
static VALUE
rb_stat_rdev_major(VALUE self, SEL sel)
{
#if defined(HAVE_ST_RDEV) && defined(major)
long rdev = get_stat(self)->st_rdev;
return ULONG2NUM(major(rdev));
#else
return Qnil;
#endif
}
/*
* call-seq:
* stat.rdev_minor => fixnum
*
* Returns the minor part of <code>File_Stat#rdev</code> or
* <code>nil</code>.
*
* File.stat("/dev/fd1").rdev_minor #=> 1
* File.stat("/dev/tty").rdev_minor #=> 0
*/
static VALUE
rb_stat_rdev_minor(VALUE self, SEL sel)
{
#if defined(HAVE_ST_RDEV) && defined(minor)
long rdev = get_stat(self)->st_rdev;
return ULONG2NUM(minor(rdev));
#else
return Qnil;
#endif
}
/*
* call-seq:
* stat.size => fixnum
*
* Returns the size of <i>stat</i> in bytes.
*
* File.stat("testfile").size #=> 66
*/
static VALUE
rb_stat_size(VALUE self, SEL sel)
{
return OFFT2NUM(get_stat(self)->st_size);
}
/*
* call-seq:
* stat.blksize => integer or nil
*
* Returns the native file system's block size. Will return <code>nil</code>
* on platforms that don't support this information.
*
* File.stat("testfile").blksize #=> 4096
*
*/
static VALUE
rb_stat_blksize(VALUE self, SEL sel)
{
#ifdef HAVE_ST_BLKSIZE
return ULONG2NUM(get_stat(self)->st_blksize);
#else
return Qnil;
#endif
}
/*
* call-seq:
* stat.blocks => integer or nil
*
* Returns the number of native file system blocks allocated for this
* file, or <code>nil</code> if the operating system doesn't
* support this feature.
*
* File.stat("testfile").blocks #=> 2
*/
static VALUE
rb_stat_blocks(VALUE self, SEL sel)
{
#ifdef HAVE_ST_BLOCKS
return ULONG2NUM(get_stat(self)->st_blocks);
#else
return Qnil;
#endif
}
static struct timespec
stat_atimespec(struct stat *st)
{
struct timespec ts;
ts.tv_sec = st->st_atime;
#if defined(HAVE_STRUCT_STAT_ST_ATIM)
ts.tv_nsec = st->st_atim.tv_nsec;
#elif defined(HAVE_STRUCT_STAT_ST_ATIMESPEC)
ts.tv_nsec = st->st_atimespec.tv_nsec;
#elif defined(HAVE_STRUCT_STAT_ST_ATIMENSEC)
ts.tv_nsec = st->st_atimensec;
#else
ts.tv_nsec = 0;
#endif
return ts;
}
static VALUE
stat_atime(struct stat *st)
{
struct timespec ts = stat_atimespec(st);
return rb_time_nano_new(ts.tv_sec, ts.tv_nsec);
}
static struct timespec
stat_mtimespec(struct stat *st)
{
struct timespec ts;
ts.tv_sec = st->st_mtime;
#if defined(HAVE_STRUCT_STAT_ST_MTIM)
ts.tv_nsec = st->st_mtim.tv_nsec;
#elif defined(HAVE_STRUCT_STAT_ST_MTIMESPEC)
ts.tv_nsec = st->st_mtimespec.tv_nsec;
#elif defined(HAVE_STRUCT_STAT_ST_MTIMENSEC)
ts.tv_nsec = st->st_mtimensec;
#else
ts.tv_nsec = 0;
#endif
return ts;
}
static VALUE
stat_mtime(struct stat *st)
{
struct timespec ts = stat_mtimespec(st);
return rb_time_nano_new(ts.tv_sec, ts.tv_nsec);
}
static struct timespec
stat_ctimespec(struct stat *st)
{
struct timespec ts;
ts.tv_sec = st->st_ctime;
#if defined(HAVE_STRUCT_STAT_ST_CTIM)
ts.tv_nsec = st->st_ctim.tv_nsec;
#elif defined(HAVE_STRUCT_STAT_ST_CTIMESPEC)
ts.tv_nsec = st->st_ctimespec.tv_nsec;
#elif defined(HAVE_STRUCT_STAT_ST_CTIMENSEC)
ts.tv_nsec = st->st_ctimensec;
#else
ts.tv_nsec = 0;
#endif
return ts;
}
static VALUE
stat_ctime(struct stat *st)
{
struct timespec ts = stat_ctimespec(st);
return rb_time_nano_new(ts.tv_sec, ts.tv_nsec);
}
/*
* call-seq:
* stat.atime => time
*
* Returns the last access time for this file as an object of class
* <code>Time</code>.
*
* File.stat("testfile").atime #=> Wed Dec 31 18:00:00 CST 1969
*
*/
static VALUE
rb_stat_atime(VALUE self, SEL sel)
{
return stat_atime(get_stat(self));
}
/*
* call-seq:
* stat.mtime -> aTime
*
* Returns the modification time of <i>stat</i>.
*
* File.stat("testfile").mtime #=> Wed Apr 09 08:53:14 CDT 2003
*
*/
static VALUE
rb_stat_mtime(VALUE self, SEL sel)
{
return stat_mtime(get_stat(self));
}
/*
* call-seq:
* stat.ctime -> aTime
*
* Returns the change time for <i>stat</i> (that is, the time
* directory information about the file was changed, not the file
* itself).
*
* File.stat("testfile").ctime #=> Wed Apr 09 08:53:14 CDT 2003
*
*/
static VALUE
rb_stat_ctime(VALUE self, SEL sel)
{
return stat_ctime(get_stat(self));
}
/*
* call-seq:
* stat.inspect => string
*
* Produce a nicely formatted description of <i>stat</i>.
*
* File.stat("/etc/passwd").inspect
* #=> "#<File::Stat dev=0xe000005, ino=1078078, mode=0100644,
* nlink=1, uid=0, gid=0, rdev=0x0, size=1374, blksize=4096,
* blocks=8, atime=Wed Dec 10 10:16:12 CST 2003,
* mtime=Fri Sep 12 15:41:41 CDT 2003,
* ctime=Mon Oct 27 11:20:27 CST 2003>"
*/
static VALUE
rb_stat_inspect(VALUE self, SEL sel)
{
VALUE str;
int i;
static const struct {
const char *name;
VALUE (*func)(VALUE, SEL);
} member[] = {
{"dev", rb_stat_dev},
{"ino", rb_stat_ino},
{"mode", rb_stat_mode},
{"nlink", rb_stat_nlink},
{"uid", rb_stat_uid},
{"gid", rb_stat_gid},
{"rdev", rb_stat_rdev},
{"size", rb_stat_size},
{"blksize", rb_stat_blksize},
{"blocks", rb_stat_blocks},
{"atime", rb_stat_atime},
{"mtime", rb_stat_mtime},
{"ctime", rb_stat_ctime},
};
str = rb_str_buf_new2("#<");
rb_str_buf_cat2(str, rb_obj_classname(self));
rb_str_buf_cat2(str, " ");
for (i = 0; i < sizeof(member)/sizeof(member[0]); i++) {
VALUE v;
if (i > 0) {
rb_str_buf_cat2(str, ", ");
}
rb_str_buf_cat2(str, member[i].name);
rb_str_buf_cat2(str, "=");
v = (*member[i].func)(self, 0);
if (i == 2) { /* mode */
char buf[32];
sprintf(buf, "0%lo", NUM2ULONG(v));
rb_str_buf_cat2(str, buf);
}
else if (i == 0 || i == 6) { /* dev/rdev */
char buf[32];
sprintf(buf, "0x%lx", NUM2ULONG(v));
rb_str_buf_cat2(str, buf);
}
else {
rb_str_append(str, rb_inspect(v));
}
}
rb_str_buf_cat2(str, ">");
OBJ_INFECT(str, self);
return str;
}
static int
rb_stat(VALUE file, struct stat *st)
{
rb_secure(2);
VALUE tmp = rb_check_convert_type(file, T_FILE, "IO", "to_io");
if (!NIL_P(tmp)) {
rb_io_t *io_struct = ExtractIOStruct(tmp);
return fstat(io_struct->fd, st);
}
FilePathValue(file);
return stat(StringValueCStr(file), st);
}
/*
* call-seq:
* File.stat(file_name) => stat
*
* Returns a <code>File::Stat</code> object for the named file (see
* <code>File::Stat</code>).
*
* File.stat("testfile").mtime #=> Tue Apr 08 12:58:04 CDT 2003
*
*/
static VALUE
rb_file_s_stat(VALUE klass, SEL sel, VALUE fname)
{
struct stat st;
rb_secure(4);
FilePathValue(fname);
if (rb_stat(fname, &st) < 0) {
rb_sys_fail(StringValueCStr(fname));
}
return stat_new(&st);
}
/*
* call-seq:
* ios.stat => stat
*
* Returns status information for <em>ios</em> as an object of type
* <code>File::Stat</code>.
*
* f = File.new("testfile")
* s = f.stat
* "%o" % s.mode #=> "100644"
* s.blksize #=> 4096
* s.atime #=> Wed Apr 09 08:53:54 CDT 2003
*
*/
static VALUE
rb_io_stat(VALUE obj, SEL sel)
{
struct rb_io_t *io = ExtractIOStruct(obj);
rb_io_check_closed(io);
struct stat st;
if (fstat(io->fd, &st) == -1) {
rb_sys_fail(RSTRING_PTR(io->path));
}
return stat_new(&st);
}
/*
* call-seq:
* File.lstat(file_name) => stat
*
* Same as <code>File::stat</code>, but does not follow the last symbolic
* link. Instead, reports on the link itself.
*
* File.symlink("testfile", "link2test") #=> 0
* File.stat("testfile").size #=> 66
* File.lstat("link2test").size #=> 8
* File.stat("link2test").size #=> 66
*
*/
static VALUE
rb_file_s_lstat(VALUE klass, SEL sel, VALUE fname)
{
#ifdef HAVE_LSTAT
struct stat st;
rb_secure(2);
FilePathValue(fname);
if (lstat(StringValueCStr(fname), &st) == -1) {
rb_sys_fail(RSTRING_PTR(fname));
}
return stat_new(&st);
#else
return rb_file_s_stat(klass, 0, fname);
#endif
}
/*
* call-seq:
* file.lstat => stat
*
* Same as <code>IO#stat</code>, but does not follow the last symbolic
* link. Instead, reports on the link itself.
*
* File.symlink("testfile", "link2test") #=> 0
* File.stat("testfile").size #=> 66
* f = File.new("link2test")
* f.lstat.size #=> 8
* f.stat.size #=> 66
*/
#if HAVE_LSTAT
static VALUE
rb_file_lstat(VALUE obj, SEL sel)
{
rb_io_t *fptr;
struct stat st;
rb_secure(2);
GetOpenFile(obj, fptr);
if (fptr->path == 0) {
return Qnil;
}
if (lstat(RSTRING_PTR(fptr->path), &st) == -1) {
rb_sys_fail(RSTRING_PTR(fptr->path));
}
return stat_new(&st);
}
#else
# define rb_file_lstat rb_f_notimplement
#endif
#ifndef HAVE_GROUP_MEMBER
static int
group_member(GETGROUPS_T gid)
{
#ifndef _WIN32
if (getgid() == gid || getegid() == gid)
return Qtrue;
# ifdef HAVE_GETGROUPS
# ifndef NGROUPS
# ifdef NGROUPS_MAX
# define NGROUPS NGROUPS_MAX
# else
# define NGROUPS 32
# endif
# endif
{
GETGROUPS_T gary[NGROUPS];
int anum;
anum = getgroups(NGROUPS, gary);
while (--anum >= 0)
if (gary[anum] == gid)
return Qtrue;
}
# endif
#endif
return Qfalse;
}
#endif
#ifndef S_IXUGO
# define S_IXUGO (S_IXUSR | S_IXGRP | S_IXOTH)
#endif
#if defined(S_IXGRP) && !defined(_WIN32) && !defined(__CYGWIN__)
#define USE_GETEUID 1
#endif
#ifndef HAVE_EACCESS
int
eaccess(const char *path, int mode)
{
#ifdef USE_GETEUID
struct stat st;
rb_uid_t euid;
if (stat(path, &st) < 0) {
return -1;
}
euid = geteuid();
if (euid == 0) {
/* Root can read or write any file. */
if (!(mode & X_OK)) {
return 0;
}
/* Root can execute any file that has any one of the execute
bits set. */
if (st.st_mode & S_IXUGO) {
return 0;
}
return -1;
}
if (st.st_uid == euid) { /* owner */
mode <<= 6;
}
else if (group_member(st.st_gid)) {
mode <<= 3;
}
if ((st.st_mode & mode) == mode) {
return 0;
}
return -1;
#else
return access(path, mode);
#endif
}
#endif
/*
* Document-class: FileTest
*
* <code>FileTest</code> implements file test operations similar to
* those used in <code>File::Stat</code>. It exists as a standalone
* module, and its methods are also insinuated into the <code>File</code>
* class. (Note that this is not done by inclusion: the interpreter cheats).
*
*/
/*
* File.directory?(file_name) => true or false
* File.directory?(file_name) => true or false
*
* Returns <code>true</code> if the named file is a directory,
* <code>false</code> otherwise.
*
* File.directory?(".")
*/
/*
* Document-method: exist?
*
* call-seq:
* Dir.exist?(file_name) => true or false
* Dir.exists?(file_name) => true or false
*
* Returns <code>true</code> if the named file is a directory,
* <code>false</code> otherwise.
*
*/
/*
* Document-method: directory?
*
* call-seq:
* File.directory?(file_name) => true or false
*
* Returns <code>true</code> if the named file is a directory,
* <code>false</code> otherwise.
*
* File.directory?(".")
*/
VALUE
rb_file_directory_p(VALUE obj, SEL sel, VALUE fname)
{
#ifndef S_ISDIR
# define S_ISDIR(m) ((m & S_IFMT) == S_IFDIR)
#endif
struct stat st;
if (rb_stat(fname, &st) < 0) return Qfalse;
if (S_ISDIR(st.st_mode)) return Qtrue;
return Qfalse;
}
/*
* call-seq:
* File.pipe?(file_name) => true or false
*
* Returns <code>true</code> if the named file is a pipe.
*/
static VALUE
rb_file_pipe_p(VALUE obj, SEL sel, VALUE fname)
{
#ifdef S_IFIFO
# ifndef S_ISFIFO
# define S_ISFIFO(m) ((m & S_IFMT) == S_IFIFO)
# endif
struct stat st;
if (rb_stat(fname, &st) < 0) return Qfalse;
if (S_ISFIFO(st.st_mode)) return Qtrue;
#endif
return Qfalse;
}
/*
* call-seq:
* File.symlink?(file_name) => true or false
*
* Returns <code>true</code> if the named file is a symbolic link.
*/
static VALUE
rb_file_symlink_p(VALUE obj, SEL sel, VALUE fname)
{
#ifndef S_ISLNK
# ifdef _S_ISLNK
# define S_ISLNK(m) _S_ISLNK(m)
# else
# ifdef _S_IFLNK
# define S_ISLNK(m) ((m & S_IFMT) == _S_IFLNK)
# else
# ifdef S_IFLNK
# define S_ISLNK(m) ((m & S_IFMT) == S_IFLNK)
# endif
# endif
# endif
#endif
#ifdef S_ISLNK
struct stat st;
rb_secure(2);
FilePathValue(fname);
if (lstat(StringValueCStr(fname), &st) < 0) return Qfalse;
if (S_ISLNK(st.st_mode)) return Qtrue;
#endif
return Qfalse;
}
/*
* call-seq:
* File.socket?(file_name) => true or false
*
* Returns <code>true</code> if the named file is a socket.
*/
static VALUE
rb_file_socket_p(VALUE obj, SEL sel, VALUE fname)
{
#ifndef S_ISSOCK
# ifdef _S_ISSOCK
# define S_ISSOCK(m) _S_ISSOCK(m)
# else
# ifdef _S_IFSOCK
# define S_ISSOCK(m) ((m & S_IFMT) == _S_IFSOCK)
# else
# ifdef S_IFSOCK
# define S_ISSOCK(m) ((m & S_IFMT) == S_IFSOCK)
# endif
# endif
# endif
#endif
#ifdef S_ISSOCK
struct stat st;
if (rb_stat(fname, &st) < 0) return Qfalse;
if (S_ISSOCK(st.st_mode)) return Qtrue;
#endif
return Qfalse;
}
/*
* call-seq:
* File.blockdev?(file_name) => true or false
*
* Returns <code>true</code> if the named file is a block device.
*/
static VALUE
rb_file_blockdev_p(VALUE obj, SEL sel, VALUE fname)
{
#ifndef S_ISBLK
# ifdef S_IFBLK
# define S_ISBLK(m) ((m & S_IFMT) == S_IFBLK)
# else
# define S_ISBLK(m) (0) /* anytime false */
# endif
#endif
#ifdef S_ISBLK
struct stat st;
if (rb_stat(fname, &st) < 0) return Qfalse;
if (S_ISBLK(st.st_mode)) return Qtrue;
#endif
return Qfalse;
}
/*
* call-seq:
* File.chardev?(file_name) => true or false
*
* Returns <code>true</code> if the named file is a character device.
*/
static VALUE
rb_file_chardev_p(VALUE obj, SEL sel, VALUE fname)
{
#ifndef S_ISCHR
# define S_ISCHR(m) ((m & S_IFMT) == S_IFCHR)
#endif
struct stat st;
if (rb_stat(fname, &st) < 0) return Qfalse;
if (S_ISCHR(st.st_mode)) return Qtrue;
return Qfalse;
}
/*
* call-seq:
* File.exist?(file_name) => true or false
* File.exists?(file_name) => true or false
*
* Return <code>true</code> if the named file exists.
*/
static VALUE
rb_file_exist_p(VALUE obj, SEL sel, VALUE fname)
{
struct stat st;
if (rb_stat(fname, &st) < 0) return Qfalse;
return Qtrue;
}
/*
* call-seq:
* File.readable?(file_name) => true or false
*
* Returns <code>true</code> if the named file is readable by the effective
* user id of this process.
*/
static VALUE
rb_file_readable_p(VALUE obj, SEL sel, VALUE fname)
{
rb_secure(2);
FilePathValue(fname);
if (eaccess(StringValueCStr(fname), R_OK) < 0) return Qfalse;
return Qtrue;
}
/*
* call-seq:
* File.readable_real?(file_name) => true or false
*
* Returns <code>true</code> if the named file is readable by the real
* user id of this process.
*/
static VALUE
rb_file_readable_real_p(VALUE obj, SEL sel, VALUE fname)
{
rb_secure(2);
FilePathValue(fname);
if (access(StringValueCStr(fname), R_OK) < 0) return Qfalse;
return Qtrue;
}
#ifndef S_IRUGO
# define S_IRUGO (S_IRUSR | S_IRGRP | S_IROTH)
#endif
#ifndef S_IWUGO
# define S_IWUGO (S_IWUSR | S_IWGRP | S_IWOTH)
#endif
/*
* call-seq:
* File.world_readable?(file_name) => fixnum or nil
*
* If <i>file_name</i> is readable by others, returns an integer
* representing the file permission bits of <i>file_name</i>. Returns
* <code>nil</code> otherwise. The meaning of the bits is platform
* dependent; on Unix systems, see <code>stat(2)</code>.
*
* File.world_readable?("/etc/passwd") # => 420
* m = File.world_readable?("/etc/passwd")
* sprintf("%o", m) # => "644"
*/
static VALUE
rb_file_world_readable_p(VALUE obj, SEL sel, VALUE fname)
{
#ifdef S_IROTH
struct stat st;
if (rb_stat(fname, &st) < 0) return Qnil;
if ((st.st_mode & (S_IROTH)) == S_IROTH) {
return UINT2NUM(st.st_mode & (S_IRUGO|S_IWUGO|S_IXUGO));
}
#endif
return Qnil;
}
/*
* call-seq:
* File.writable?(file_name) => true or false
*
* Returns <code>true</code> if the named file is writable by the effective
* user id of this process.
*/
static VALUE
rb_file_writable_p(VALUE obj, SEL sel, VALUE fname)
{
rb_secure(2);
FilePathValue(fname);
if (eaccess(StringValueCStr(fname), W_OK) < 0) return Qfalse;
return Qtrue;
}
/*
* call-seq:
* File.writable_real?(file_name) => true or false
*
* Returns <code>true</code> if the named file is writable by the real
* user id of this process.
*/
static VALUE
rb_file_writable_real_p(VALUE obj, SEL sel, VALUE fname)
{
rb_secure(2);
FilePathValue(fname);
if (access(StringValueCStr(fname), W_OK) < 0) return Qfalse;
return Qtrue;
}
/*
* call-seq:
* File.world_writable?(file_name) => fixnum or nil
*
* If <i>file_name</i> is writable by others, returns an integer
* representing the file permission bits of <i>file_name</i>. Returns
* <code>nil</code> otherwise. The meaning of the bits is platform
* dependent; on Unix systems, see <code>stat(2)</code>.
*
* File.world_writable?("/tmp") #=> 511
* m = File.world_writable?("/tmp")
* sprintf("%o", m) #=> "777"
*/
static VALUE
rb_file_world_writable_p(VALUE obj, SEL sel, VALUE fname)
{
struct stat st;
if (rb_stat(fname, &st) < 0) {
return Qnil;
}
if ((st.st_mode & (S_IWOTH)) == S_IWOTH) {
return UINT2NUM(st.st_mode & (S_IRUGO | S_IWUGO | S_IXUGO));
}
return Qnil;
}
/*
* call-seq:
* File.executable?(file_name) => true or false
*
* Returns <code>true</code> if the named file is executable by the effective
* user id of this process.
*/
static VALUE
rb_file_executable_p(VALUE obj, SEL sel, VALUE fname)
{
rb_secure(2);
FilePathValue(fname);
if (eaccess(StringValueCStr(fname), X_OK) < 0) return Qfalse;
return Qtrue;
}
/*
* call-seq:
* File.executable_real?(file_name) => true or false
*
* Returns <code>true</code> if the named file is executable by the real
* user id of this process.
*/
static VALUE
rb_file_executable_real_p(VALUE obj, SEL sel, VALUE fname)
{
rb_secure(2);
FilePathValue(fname);
if (access(StringValueCStr(fname), X_OK) < 0) return Qfalse;
return Qtrue;
}
#ifndef S_ISREG
# define S_ISREG(m) ((m & S_IFMT) == S_IFREG)
#endif
/*
* call-seq:
* File.file?(file_name) => true or false
*
* Returns <code>true</code> if the named file exists and is a
* regular file.
*/
static VALUE
rb_file_file_p(VALUE obj, SEL sel, VALUE fname)
{
struct stat st;
if (rb_stat(fname, &st) < 0) return Qfalse;
if (S_ISREG(st.st_mode)) return Qtrue;
return Qfalse;
}
/*
* call-seq:
* File.zero?(file_name) => true or false
*
* Returns <code>true</code> if the named file exists and has
* a zero size.
*/
static VALUE
rb_file_zero_p(VALUE obj, SEL sel, VALUE fname)
{
struct stat st;
if (rb_stat(fname, &st) < 0) return Qfalse;
if (st.st_size == 0) return Qtrue;
return Qfalse;
}
/*
* call-seq:
* File.size?(file_name) => Integer or nil
*
* Returns +nil+ if +file_name+ doesn't exist or has zero size, the size of the
* file otherwise.
*/
static VALUE
rb_file_size_p(VALUE obj, SEL sel, VALUE fname)
{
struct stat st;
if (rb_stat(fname, &st) < 0) return Qnil;
if (st.st_size == 0) return Qnil;
return OFFT2NUM(st.st_size);
}
/*
* call-seq:
* File.owned?(file_name) => true or false
*
* Returns <code>true</code> if the named file exists and the
* effective used id of the calling process is the owner of
* the file.
*/
static VALUE
rb_file_owned_p(VALUE obj, SEL sel, VALUE fname)
{
struct stat st;
if (rb_stat(fname, &st) < 0) return Qfalse;
if (st.st_uid == geteuid()) return Qtrue;
return Qfalse;
}
static VALUE
rb_file_rowned_p(VALUE obj, VALUE fname)
{
struct stat st;
if (rb_stat(fname, &st) < 0) return Qfalse;
if (st.st_uid == getuid()) return Qtrue;
return Qfalse;
}
/*
* call-seq:
* File.grpowned?(file_name) => true or false
*
* Returns <code>true</code> if the named file exists and the
* effective group id of the calling process is the owner of
* the file. Returns <code>false</code> on Windows.
*/
static VALUE
rb_file_grpowned_p(VALUE obj, SEL sel, VALUE fname)
{
#ifndef _WIN32
struct stat st;
if (rb_stat(fname, &st) < 0) return Qfalse;
if (group_member(st.st_gid)) return Qtrue;
#endif
return Qfalse;
}
#if defined(S_ISUID) || defined(S_ISGID) || defined(S_ISVTX)
static VALUE
check3rdbyte(VALUE fname, int mode)
{
struct stat st;
rb_secure(2);
FilePathValue(fname);
if (stat(StringValueCStr(fname), &st) < 0) return Qfalse;
if (st.st_mode & mode) return Qtrue;
return Qfalse;
}
#endif
/*
* call-seq:
* File.setuid?(file_name) => true or false
*
* Returns <code>true</code> if the named file has the setuid bit set.
*/
static VALUE
rb_file_suid_p(VALUE obj, SEL sel, VALUE fname)
{
#ifdef S_ISUID
return check3rdbyte(fname, S_ISUID);
#else
return Qfalse;
#endif
}
/*
* call-seq:
* File.setgid?(file_name) => true or false
*
* Returns <code>true</code> if the named file has the setgid bit set.
*/
static VALUE
rb_file_sgid_p(VALUE obj, SEL sel, VALUE fname)
{
#ifdef S_ISGID
return check3rdbyte(fname, S_ISGID);
#else
return Qfalse;
#endif
}
/*
* call-seq:
* File.sticky?(file_name) => true or false
*
* Returns <code>true</code> if the named file has the sticky bit set.
*/
static VALUE
rb_file_sticky_p(VALUE obj, SEL sel, VALUE fname)
{
#ifdef S_ISVTX
return check3rdbyte(fname, S_ISVTX);
#else
return Qnil;
#endif
}
/*
* call-seq:
* File.identical?(file_1, file_2) => true or false
*
* Returns <code>true</code> if the named files are identical.
*
* open("a", "w") {}
* p File.identical?("a", "a") #=> true
* p File.identical?("a", "./a") #=> true
* File.link("a", "b")
* p File.identical?("a", "b") #=> true
* File.symlink("a", "c")
* p File.identical?("a", "c") #=> true
* open("d", "w") {}
* p File.identical?("a", "d") #=> false
*/
static VALUE
rb_file_identical_p(VALUE obj, SEL sel, VALUE fname1, VALUE fname2)
{
struct stat st1, st2;
if (rb_stat(fname1, &st1) < 0) return Qfalse;
if (rb_stat(fname2, &st2) < 0) return Qfalse;
if (st1.st_dev != st2.st_dev) return Qfalse;
if (st1.st_ino != st2.st_ino) return Qfalse;
return Qtrue;
}
/*
* call-seq:
* File.size(file_name) => integer
*
* Returns the size of <code>file_name</code>.
*/
static VALUE
rb_file_s_size(VALUE klass, SEL sel, VALUE fname)
{
struct stat st;
if (rb_stat(fname, &st) < 0)
rb_sys_fail(StringValueCStr(fname));
return OFFT2NUM(st.st_size);
}
static VALUE
rb_file_size(VALUE obj, SEL sel)
{
struct stat st;
struct rb_io_t *io = ExtractIOStruct(obj);
rb_io_check_closed(io);
if (fstat(io->fd, &st) == -1) {
rb_sys_fail(RSTRING_PTR(io->path));
}
return OFFT2NUM(st.st_size);
}
static VALUE
rb_file_ftype(const struct stat *st)
{
const char *t;
if (S_ISREG(st->st_mode)) {
t = "file";
}
else if (S_ISDIR(st->st_mode)) {
t = "directory";
}
else if (S_ISCHR(st->st_mode)) {
t = "characterSpecial";
}
#ifdef S_ISBLK
else if (S_ISBLK(st->st_mode)) {
t = "blockSpecial";
}
#endif
#ifdef S_ISFIFO
else if (S_ISFIFO(st->st_mode)) {
t = "fifo";
}
#endif
#ifdef S_ISLNK
else if (S_ISLNK(st->st_mode)) {
t = "link";
}
#endif
#ifdef S_ISSOCK
else if (S_ISSOCK(st->st_mode)) {
t = "socket";
}
#endif
else {
t = "unknown";
}
return rb_usascii_str_new2(t);
}
/*
* call-seq:
* File.ftype(file_name) => string
*
* Identifies the type of the named file; the return string is one of
* ``<code>file</code>'', ``<code>directory</code>'',
* ``<code>characterSpecial</code>'', ``<code>blockSpecial</code>'',
* ``<code>fifo</code>'', ``<code>link</code>'',
* ``<code>socket</code>'', or ``<code>unknown</code>''.
*
* File.ftype("testfile") #=> "file"
* File.ftype("/dev/tty") #=> "characterSpecial"
* File.ftype("/tmp/.X11-unix/X0") #=> "socket"
*/
static VALUE
rb_file_s_ftype(VALUE klass, SEL sel, VALUE fname)
{
struct stat st;
rb_secure(2);
FilePathValue(fname);
if (lstat(StringValueCStr(fname), &st) == -1) {
rb_sys_fail(RSTRING_PTR(fname));
}
return rb_file_ftype(&st);
}
/*
* call-seq:
* File.atime(file_name) => time
*
* Returns the last access time for the named file as a Time object).
*
* File.atime("testfile") #=> Wed Apr 09 08:51:48 CDT 2003
*
*/
static VALUE
rb_file_s_atime(VALUE klass, SEL sel, VALUE fname)
{
struct stat st;
if (rb_stat(fname, &st) < 0)
rb_sys_fail(StringValueCStr(fname));
return stat_atime(&st);
}
/*
* call-seq:
* file.atime => time
*
* Returns the last access time (a <code>Time</code> object)
* for <i>file</i>, or epoch if <i>file</i> has not been accessed.
*
* File.new("testfile").atime #=> Wed Dec 31 18:00:00 CST 1969
*
*/
static VALUE
rb_file_atime(VALUE obj, SEL sel)
{
struct stat st;
struct rb_io_t *io = ExtractIOStruct(obj);
if (fstat(io->fd, &st) == -1) {
rb_sys_fail(RSTRING_PTR(io->path));
}
return stat_atime(&st);
}
/*
* call-seq:
* File.mtime(file_name) => time
*
* Returns the modification time for the named file as a Time object.
*
* File.mtime("testfile") #=> Tue Apr 08 12:58:04 CDT 2003
*
*/
static VALUE
rb_file_s_mtime(VALUE klass, SEL sel, VALUE fname)
{
struct stat st;
if (rb_stat(fname, &st) < 0)
rb_sys_fail(RSTRING_PTR(fname));
return stat_mtime(&st);
}
/*
* call-seq:
* file.mtime -> time
*
* Returns the modification time for <i>file</i>.
*
* File.new("testfile").mtime #=> Wed Apr 09 08:53:14 CDT 2003
*
*/
static VALUE
rb_file_mtime(VALUE obj, SEL sel)
{
struct stat st;
struct rb_io_t *io = ExtractIOStruct(obj);
if (fstat(io->fd, &st) == -1) {
rb_sys_fail(RSTRING_PTR(io->path));
}
return stat_mtime(&st);
}
/*
* call-seq:
* File.ctime(file_name) => time
*
* Returns the change time for the named file (the time at which
* directory information about the file was changed, not the file
* itself).
*
* File.ctime("testfile") #=> Wed Apr 09 08:53:13 CDT 2003
*
*/
static VALUE
rb_file_s_ctime(VALUE klass, SEL sel, VALUE fname)
{
struct stat st;
if (rb_stat(fname, &st) < 0)
rb_sys_fail(RSTRING_PTR(fname));
return stat_ctime(&st);
}
/*
* call-seq:
* file.ctime -> time
*
* Returns the change time for <i>file</i> (that is, the time directory
* information about the file was changed, not the file itself).
*
* File.new("testfile").ctime #=> Wed Apr 09 08:53:14 CDT 2003
*
*/
static VALUE
rb_file_ctime(VALUE obj, SEL sel)
{
struct stat st;
struct rb_io_t *io = ExtractIOStruct(obj);
if (fstat(io->fd, &st) == -1) {
rb_sys_fail(RSTRING_PTR(io->path));
}
return stat_ctime(&st);
}
static void
chmod_internal(const char *path, void *mode)
{
if (chmod(path, *(int *)mode) < 0)
rb_sys_fail(path);
}
/*
* call-seq:
* File.chmod(mode_int, file_name, ... ) -> integer
*
* Changes permission bits on the named file(s) to the bit pattern
* represented by <i>mode_int</i>. Actual effects are operating system
* dependent (see the beginning of this section). On Unix systems, see
* <code>chmod(2)</code> for details. Returns the number of files
* processed.
*
* File.chmod(0644, "testfile", "out") #=> 2
*/
static VALUE
rb_file_s_chmod(VALUE rcv, SEL sel, int argc, VALUE *argv)
{
rb_secure(2);
if (argc < 1) {
rb_raise(rb_eArgError, "wrong number of arguments (%d for 1)", argc);
}
VALUE vmode = argv[0];
vmode = rb_check_to_integer(vmode, "to_int");
if (NIL_P(vmode)) {
rb_raise(rb_eTypeError, "chmod() takes a numeric argument");
}
int mode = NUM2INT(vmode);
long n = apply2files(chmod_internal, argc - 1, &argv[1], &mode);
return LONG2FIX(n);
}
/*
* call-seq:
* file.chmod(mode_int) => 0
*
* Changes permission bits on <i>file</i> to the bit pattern
* represented by <i>mode_int</i>. Actual effects are platform
* dependent; on Unix systems, see <code>chmod(2)</code> for details.
* Follows symbolic links. Also see <code>File#lchmod</code>.
*
* f = File.new("out", "w");
* f.chmod(0644) #=> 0
*/
static VALUE
rb_file_chmod(VALUE obj, SEL sel, VALUE vmode)
{
rb_secure(2);
rb_io_t *io = ExtractIOStruct(obj);
vmode = rb_check_to_integer(vmode, "to_int");
if (NIL_P(vmode)) {
rb_raise(rb_eTypeError, "chmod() takes a numeric argument");
}
if (fchmod(io->fd, FIX2INT(vmode)) == -1) {
rb_sys_fail(RSTRING_PTR(io->path));
}
return INT2FIX(0);
}
#if defined(HAVE_LCHMOD)
static void
lchmod_internal(const char *path, void *mode)
{
if (lchmod(path, (int)(VALUE)mode) < 0)
rb_sys_fail(path);
}
/*
* call-seq:
* File.lchmod(mode_int, file_name, ...) => integer
*
* Equivalent to <code>File::chmod</code>, but does not follow symbolic
* links (so it will change the permissions associated with the link,
* not the file referenced by the link). Often not available.
*
*/
static VALUE
rb_file_s_lchmod(VALUE rcv, SEL sel, int argc, VALUE *argv)
{
rb_secure(2);
if (argc < 1) {
rb_raise(rb_eArgError, "wrong number of arguments (%d for 1)", argc);
}
VALUE vmode = argv[0];
int mode = NUM2INT(vmode);
long n = apply2files(lchmod_internal, argc - 1, &argv[1],
(void *)(long)mode);
return LONG2FIX(n);
}
#else
# define rb_file_s_lchmod rb_f_notimplement
#endif
struct chown_args {
rb_uid_t owner;
rb_gid_t group;
};
static void
chown_internal(const char *path, void *arg)
{
struct chown_args *args = arg;
if (chown(path, args->owner, args->group) < 0)
rb_sys_fail(path);
}
/*
* call-seq:
* File.chown(owner_int, group_int, file_name,... ) -> integer
*
* Changes the owner and group of the named file(s) to the given
* numeric owner and group id's. Only a process with superuser
* privileges may change the owner of a file. The current owner of a
* file may change the file's group to any group to which the owner
* belongs. A <code>nil</code> or -1 owner or group id is ignored.
* Returns the number of files processed.
*
* File.chown(nil, 100, "testfile")
*
*/
static VALUE
rb_file_s_chown(VALUE rcv, SEL sel, int argc, VALUE *argv)
{
rb_secure(2);
if (argc < 2) {
rb_raise(rb_eArgError, "wrong number of arguments (%d for 2)", argc);
}
VALUE o = argv[0];
VALUE g = argv[1];
struct chown_args arg;
if (NIL_P(o)) {
arg.owner = -1;
}
else {
arg.owner = NUM2UIDT(o);
}
if (NIL_P(g)) {
arg.group = -1;
}
else {
arg.group = NUM2GIDT(g);
}
long n = apply2files(chown_internal, argc - 2, &argv[2], &arg);
return LONG2FIX(n);
}
/*
* call-seq:
* file.chown(owner_int, group_int ) => 0
*
* Changes the owner and group of <i>file</i> to the given numeric
* owner and group id's. Only a process with superuser privileges may
* change the owner of a file. The current owner of a file may change
* the file's group to any group to which the owner belongs. A
* <code>nil</code> or -1 owner or group id is ignored. Follows
* symbolic links. See also <code>File#lchown</code>.
*
* File.new("testfile").chown(502, 1000)
*
*/
static VALUE
rb_file_chown(VALUE obj, SEL sel, VALUE owner, VALUE group)
{
rb_secure(2);
const int o = NIL_P(owner) ? -1 : NUM2INT(owner);
const int g = NIL_P(group) ? -1 : NUM2INT(group);
rb_io_t *io_struct = ExtractIOStruct(obj);
if (fchown(io_struct->fd, o, g) == -1) {
rb_sys_fail(RSTRING_PTR(io_struct->path));
}
return INT2FIX(0);
}
#if defined(HAVE_LCHOWN) && !defined(__CHECKER__)
static void
lchown_internal(const char *path, void *arg)
{
struct chown_args *args = arg;
if (lchown(path, args->owner, args->group) < 0)
rb_sys_fail(path);
}
/*
* call-seq:
* file.lchown(owner_int, group_int, file_name,..) => integer
*
* Equivalent to <code>File::chown</code>, but does not follow symbolic
* links (so it will change the owner associated with the link, not the
* file referenced by the link). Often not available. Returns number
* of files in the argument list.
*
*/
static VALUE
rb_file_s_lchown(VALUE rcv, SEL sel, int argc, VALUE *argv)
{
rb_secure(2);
if (argc < 2) {
rb_raise(rb_eArgError, "wrong number of arguments (%d for 2)", argc);
}
VALUE o = argv[0];
VALUE g = argv[1];
struct chown_args arg;
if (NIL_P(o)) {
arg.owner = -1;
}
else {
arg.owner = NUM2UIDT(o);
}
if (NIL_P(g)) {
arg.group = -1;
}
else {
arg.group = NUM2GIDT(g);
}
long n = apply2files(lchown_internal, argc - 2, &argv[2], &arg);
return LONG2FIX(n);
}
#else
# define rb_file_s_lchown rb_f_notimplement
#endif
struct timespec rb_time_timespec(VALUE time);
#if defined(HAVE_UTIMES)
static void
utime_internal(const char *path, void *arg)
{
struct timespec *tsp = arg;
struct timeval tvbuf[2], *tvp = arg;
#ifdef HAVE_UTIMENSAT
static int try_utimensat = 1;
if (try_utimensat) {
struct timespec *tsp = arg;
if (utimensat(AT_FDCWD, path, tsp, 0) < 0) {
if (errno == ENOSYS) {
try_utimensat = 0;
goto no_utimensat;
}
rb_sys_fail(path);
}
return;
}
no_utimensat:
#endif
if (tsp) {
tvbuf[0].tv_sec = tsp[0].tv_sec;
tvbuf[0].tv_usec = tsp[0].tv_nsec / 1000;
tvbuf[1].tv_sec = tsp[1].tv_sec;
tvbuf[1].tv_usec = tsp[1].tv_nsec / 1000;
tvp = tvbuf;
}
if (utimes(path, tvp) < 0)
rb_sys_fail(path);
}
#else
#if !defined HAVE_UTIME_H && !defined HAVE_SYS_UTIME_H
struct utimbuf {
long actime;
long modtime;
};
#endif
static void
utime_internal(const char *path, void *arg)
{
struct timespec *tsp = arg;
struct utimbuf utbuf, *utp = NULL;
if (tsp) {
utbuf.actime = tsp[0].tv_sec;
utbuf.modtime = tsp[1].tv_sec;
utp = &utbuf;
}
if (utime(path, utp) < 0)
rb_sys_fail(path);
}
#endif
/*
* call-seq:
* File.utime(atime, mtime, file_name,...) => integer
*
* Sets the access and modification times of each
* named file to the first two arguments. Returns
* the number of file names in the argument list.
*/
static VALUE
rb_file_s_utime(VALUE rcv, SEL sel, int argc, VALUE *argv)
{
rb_secure(2);
if (argc < 2) {
rb_raise(rb_eArgError, "wrong number of arguments (%d for 2)", argc);
}
VALUE atime = argv[0];
VALUE mtime = argv[1];
struct timespec tss[2], *tsp = NULL;
if (!NIL_P(atime) || !NIL_P(mtime)) {
tsp = tss;
tsp[0] = rb_time_timespec(atime);
tsp[1] = rb_time_timespec(mtime);
}
long n = apply2files(utime_internal, argc - 2, &argv[2], tsp);
return LONG2FIX(n);
}
NORETURN(static void sys_fail2(VALUE,VALUE));
static void
sys_fail2(VALUE s1, VALUE s2)
{
char *buf;
#ifdef MAX_PATH
const int max_pathlen = MAX_PATH;
#else
const int max_pathlen = MAXPATHLEN;
#endif
const char *e1, *e2;
int len = 5;
int l1 = RSTRING_LEN(s1), l2 = RSTRING_LEN(s2);
e1 = e2 = "";
if (l1 > max_pathlen) {
l1 = max_pathlen - 3;
e1 = "...";
len += 3;
}
if (l2 > max_pathlen) {
l2 = max_pathlen - 3;
e2 = "...";
len += 3;
}
len += l1 + l2;
buf = ALLOCA_N(char, len);
snprintf(buf, len, "(%.*s%s, %.*s%s)",
l1, RSTRING_PTR(s1), e1,
l2, RSTRING_PTR(s2), e2);
rb_sys_fail(buf);
}
/*
* call-seq:
* File.link(old_name, new_name) => 0
*
* Creates a new name for an existing file using a hard link. Will not
* overwrite <i>new_name</i> if it already exists (raising a subclass
* of <code>SystemCallError</code>). Not available on all platforms.
*
* File.link("testfile", ".testfile") #=> 0
* IO.readlines(".testfile")[0] #=> "This is line one\n"
*/
#ifdef HAVE_LINK
static VALUE
rb_file_s_link(VALUE klass, SEL sel, VALUE from, VALUE to)
{
rb_secure(2);
FilePathValue(from);
FilePathValue(to);
if (link(StringValueCStr(from), StringValueCStr(to)) < 0) {
sys_fail2(from, to);
}
return INT2FIX(0);
}
#else
# define rb_file_s_link rb_f_notimplement
#endif
/*
* call-seq:
* File.symlink(old_name, new_name) => 0
*
* Creates a symbolic link called <i>new_name</i> for the existing file
* <i>old_name</i>. Raises a <code>NotImplemented</code> exception on
* platforms that do not support symbolic links.
*
* File.symlink("testfile", "link2test") #=> 0
*
*/
#ifdef HAVE_SYMLINK
static VALUE
rb_file_s_symlink(VALUE klass, SEL sel, VALUE from, VALUE to)
{
rb_secure(2);
FilePathValue(from);
FilePathValue(to);
if (symlink(StringValueCStr(from), StringValueCStr(to)) < 0) {
sys_fail2(from, to);
}
return INT2FIX(0);
}
#else
# define rb_file_s_symlink rb_f_notimplement
#endif
/*
* call-seq:
* File.readlink(link_name) -> file_name
*
* Returns the name of the file referenced by the given link.
* Not available on all platforms.
*
* File.symlink("testfile", "link2test") #=> 0
* File.readlink("link2test") #=> "testfile"
*/
#ifdef HAVE_READLINK
static VALUE
rb_file_s_readlink(VALUE klass, SEL sel, VALUE path)
{
char *buf;
int size = 100;
int rv;
VALUE v;
rb_secure(2);
FilePathValue(path);
buf = xmalloc(size);
while ((rv = readlink(RSTRING_PTR(path), buf, size)) == size
#ifdef _AIX
|| (rv < 0 && errno == ERANGE) /* quirky behavior of GPFS */
#endif
) {
size *= 2;
buf = xrealloc(buf, size);
}
if (rv < 0) {
xfree(buf);
rb_sys_fail(RSTRING_PTR(path));
}
v = rb_tainted_str_new(buf, rv);
xfree(buf);
return v;
}
#else
# define rb_file_s_readlink rb_f_notimplement
#endif
static void
unlink_internal(const char *path, void *arg)
{
if (unlink(path) < 0)
rb_sys_fail(path);
}
/*
* call-seq:
* File.delete(file_name, ...) => integer
* File.unlink(file_name, ...) => integer
*
* Deletes the named files, returning the number of names
* passed as arguments. Raises an exception on any error.
* See also <code>Dir::rmdir</code>.
*/
static VALUE
rb_file_s_unlink(VALUE klass, SEL sel, int argc, VALUE *argv)
{
long n;
rb_secure(2);
n = apply2files(unlink_internal, argc, argv, 0);
return LONG2FIX(n);
}
/*
* call-seq:
* File.rename(old_name, new_name) => 0
*
* Renames the given file to the new name. Raises a
* <code>SystemCallError</code> if the file cannot be renamed.
*
* File.rename("afile", "afile.bak") #=> 0
*/
static VALUE
rb_file_s_rename(VALUE klass, SEL sel, VALUE from, VALUE to)
{
const char *src, *dst;
rb_secure(2);
FilePathValue(from);
FilePathValue(to);
src = StringValueCStr(from);
dst = StringValueCStr(to);
if (rename(src, dst) < 0) {
sys_fail2(from, to);
}
return INT2FIX(0);
}
/*
* call-seq:
* File.umask() => integer
* File.umask(integer) => integer
*
* Returns the current umask value for this process. If the optional
* argument is given, set the umask to that value and return the
* previous value. Umask values are <em>subtracted</em> from the
* default permissions, so a umask of <code>0222</code> would make a
* file read-only for everyone.
*
* File.umask(0006) #=> 18
* File.umask #=> 6
*/
static VALUE
rb_file_s_umask(VALUE rcv, SEL sel, int argc, VALUE *argv)
{
int omask = 0;
rb_secure(2);
if (argc == 0) {
omask = umask(0);
umask(omask);
}
else if (argc == 1) {
omask = umask(NUM2INT(argv[0]));
}
else {
rb_raise(rb_eArgError, "wrong number of arguments");
}
return INT2FIX(omask);
}
#define isdirsep(x) ((x) == '/')
#define istrailinggabage(x) 0
#ifndef CharNext
# define CharNext(p) ((p) + 1)
#endif
static inline char *
skiproot(const char *path)
{
while (isdirsep(*path)) path++;
return (char *)path;
}
#define nextdirsep rb_path_next
char *
rb_path_next(const char *s)
{
while (*s && !isdirsep(*s)) {
s = CharNext(s);
}
return (char *)s;
}
#define skipprefix(path) (path)
#define strrdirsep rb_path_last_separator
static char *
rb_path_last_separator(const char *path)
{
char *last = NULL;
while (*path) {
if (isdirsep(*path)) {
const char *tmp = path++;
while (isdirsep(*path)) path++;
if (!*path) break;
last = (char *)tmp;
}
else {
path = CharNext(path);
}
}
return last;
}
static char *
chompdirsep(const char *path)
{
while (*path) {
if (isdirsep(*path)) {
const char *last = path++;
while (isdirsep(*path)) path++;
if (!*path) return (char *)last;
}
else {
path = CharNext(path);
}
}
return (char *)path;
}
char *
rb_path_end(const char *path)
{
if (isdirsep(*path)) path++;
return chompdirsep(path);
}
static int is_absolute_path(const char*);
/*
* call-seq:
* File.expand_path(file_name [, dir_string] ) -> abs_file_name
*
* Converts a pathname to an absolute pathname. Relative paths are
* referenced from the current working directory of the process unless
* <i>dir_string</i> is given, in which case it will be used as the
* starting point. The given pathname may start with a
* ``<code>~</code>'', which expands to the process owner's home
* directory (the environment variable <code>HOME</code> must be set
* correctly). ``<code>~</code><i>user</i>'' expands to the named
* user's home directory.
*
* File.expand_path("~oracle/bin") #=> "/home/oracle/bin"
* File.expand_path("../../bin", "/tmp/x") #=> "/bin"
*/
static VALUE
rb_file_s_expand_path(VALUE rcv, SEL sel, int argc, VALUE *argv)
{
VALUE fname, dname;
if (argc == 1) {
return rb_file_expand_path(argv[0], Qnil);
}
rb_scan_args(argc, argv, "11", &fname, &dname);
return rb_file_expand_path(fname, dname);
}
/*
* call-seq:
* File.absolute_path(file_name [, dir_string] ) -> abs_file_name
*
* Converts a pathname to an absolute pathname. Relative paths are
* referenced from the current working directory of the process unless
* <i>dir_string</i> is given, in which case it will be used as the
* starting point. If the given pathname starts with a ``<code>~</code>''
* it is NOT expanded, it is treated as a normal directory name.
*
* File.absolute_path("~oracle/bin") #=> "<relative_path>/~oracle/bin"
*/
VALUE
rb_file_s_absolute_path(VALUE rcv, SEL sel, int argc, VALUE *argv)
{
VALUE fname, dname;
if (argc == 1) {
return rb_file_absolute_path(argv[0], Qnil);
}
rb_scan_args(argc, argv, "11", &fname, &dname);
return rb_file_absolute_path(fname, dname);
}
static void
realpath_rec(long *prefixlenp, VALUE *resolvedp, char *unresolved, VALUE loopcheck, int strict, int last)
{
ID resolving = rb_intern("resolving");
while (*unresolved) {
char *testname = unresolved;
char *unresolved_firstsep = rb_path_next(unresolved);
long testnamelen = unresolved_firstsep - unresolved;
char *unresolved_nextname = unresolved_firstsep;
while (isdirsep(*unresolved_nextname)) unresolved_nextname++;
unresolved = unresolved_nextname;
if (testnamelen == 1 && testname[0] == '.') {
}
else if (testnamelen == 2 && testname[0] == '.' && testname[1] == '.') {
if (*prefixlenp < RSTRING_LEN(*resolvedp)) {
char *resolved_names = (char *)RSTRING_PTR(*resolvedp) + *prefixlenp;
char *lastsep = rb_path_last_separator(resolved_names);
long len = lastsep ? lastsep - resolved_names : 0;
rb_str_set_len(*resolvedp, *prefixlenp + len);
}
}
else {
VALUE checkval;
VALUE testpath = rb_str_dup(*resolvedp);
if (*prefixlenp < RSTRING_LEN(testpath))
rb_str_cat2(testpath, "/");
rb_str_cat(testpath, testname, testnamelen);
checkval = rb_hash_aref(loopcheck, testpath);
if (!NIL_P(checkval)) {
if (checkval == ID2SYM(resolving)) {
errno = ELOOP;
rb_sys_fail((char *)RSTRING_PTR(testpath));
}
else {
*resolvedp = rb_str_dup(checkval);
}
}
else {
struct stat sbuf;
int ret;
ret = lstat((char *)RSTRING_PTR(testpath), &sbuf);
if (ret == -1) {
if (errno == ENOENT) {
if (strict || !last || *unresolved_firstsep)
rb_sys_fail(RSTRING_PTR(testpath));
*resolvedp = testpath;
break;
}
else {
rb_sys_fail((char *)RSTRING_PTR(testpath));
}
}
#ifdef HAVE_READLINK
if (S_ISLNK(sbuf.st_mode)) {
volatile VALUE link;
char *link_prefix, *link_names;
long link_prefixlen;
rb_hash_aset(loopcheck, testpath, ID2SYM(resolving));
link = rb_file_s_readlink(rb_cFile, 0, testpath);
link_prefix = (char *)RSTRING_PTR(link);
link_names = skiproot(link_prefix);
link_prefixlen = link_names - link_prefix;
if (link_prefixlen == 0) {
realpath_rec(prefixlenp, resolvedp, link_names, loopcheck, strict, *unresolved_firstsep == '\0');
}
else {
*resolvedp = rb_str_new(link_prefix, link_prefixlen);
*prefixlenp = link_prefixlen;
realpath_rec(prefixlenp, resolvedp, link_names, loopcheck, strict, *unresolved_firstsep == '\0');
}
rb_hash_aset(loopcheck, testpath, rb_str_dup(*resolvedp));
}
else
#endif
{
VALUE s = rb_str_dup(testpath);
rb_hash_aset(loopcheck, s, s);
*resolvedp = testpath;
}
}
}
}
}
VALUE
rb_realpath_internal(VALUE basedir, VALUE path, int strict)
{
long prefixlen;
VALUE resolved;
volatile VALUE unresolved_path;
VALUE loopcheck;
volatile VALUE curdir = Qnil;
char *path_names = NULL, *basedir_names = NULL, *curdir_names = NULL;
char *ptr, *prefixptr = NULL;
rb_secure(2);
FilePathValue(path);
unresolved_path = rb_str_dup(path);
if (!NIL_P(basedir)) {
FilePathValue(basedir);
basedir = rb_str_dup(basedir);
}
ptr = (char *)RSTRING_PTR(unresolved_path);
path_names = skiproot(ptr);
if (ptr != path_names) {
resolved = rb_str_new(ptr, path_names - ptr);
goto root_found;
}
if (!NIL_P(basedir)) {
ptr = (char *)RSTRING_PTR(basedir);
basedir_names = skiproot(ptr);
if (ptr != basedir_names) {
resolved = rb_str_new(ptr, basedir_names - ptr);
goto root_found;
}
}
curdir = ruby_getcwd();
ptr = (char *)RSTRING_PTR(curdir);
curdir_names = skiproot(ptr);
resolved = rb_str_new(ptr, curdir_names - ptr);
root_found:
prefixptr = (char *)RSTRING_PTR(resolved);
prefixlen = RSTRING_LEN(resolved);
ptr = chompdirsep(prefixptr);
if (*ptr) {
prefixlen = ++ptr - prefixptr;
rb_str_set_len(resolved, prefixlen);
}
#ifdef FILE_ALT_SEPARATOR
while (prefixptr < ptr) {
if (*prefixptr == FILE_ALT_SEPARATOR) {
*prefixptr = '/';
}
prefixptr = CharNext(prefixptr);
}
#endif
loopcheck = rb_hash_new();
if (curdir_names)
realpath_rec(&prefixlen, &resolved, curdir_names, loopcheck, 1, 0);
if (basedir_names)
realpath_rec(&prefixlen, &resolved, basedir_names, loopcheck, 1, 0);
realpath_rec(&prefixlen, &resolved, path_names, loopcheck, strict, 1);
OBJ_TAINT(resolved);
return resolved;
}
/*
* call-seq:
* File.realpath(pathname [, dir_string]) -> real_pathname
*
* Returns the real (absolute) pathname of _pathname_ in the actual
* filesystem not containing symlinks or useless dots.
*
* If _dir_string_ is given, it is used as a base directory
* for interpreting relative pathname instead of the current directory.
*
* All components of the pathname must exist when this method is
* called.
*/
static VALUE
rb_file_s_realpath(VALUE klass, SEL sel, int argc, VALUE *argv)
{
VALUE path, basedir;
rb_scan_args(argc, argv, "11", &path, &basedir);
return rb_realpath_internal(basedir, path, 1);
}
/*
* call-seq:
* File.realdirpath(pathname [, dir_string]) -> real_pathname
*
* Returns the real (absolute) pathname of _pathname_ in the actual filesystem.
* The real pathname doesn't contain symlinks or useless dots.
*
* If _dir_string_ is given, it is used as a base directory
* for interpreting relative pathname instead of the current directory.
*
* The last component of the real pathname can be nonexistent.
*/
static VALUE
rb_file_s_realdirpath(VALUE klass, SEL sel, int argc, VALUE *argv)
{
VALUE path, basedir;
rb_scan_args(argc, argv, "11", &path, &basedir);
return rb_realpath_internal(basedir, path, 0);
}
static int
rmext(const char *p, int l1, const char *e)
{
int l0, l2;
if (!e) return 0;
for (l0 = 0; l0 < l1; ++l0) {
if (p[l0] != '.') break;
}
l2 = strlen(e);
if (l2 == 2 && e[1] == '*') {
unsigned char c = *e;
e = p + l1;
do {
if (e <= p + l0) return 0;
} while (*--e != c);
return e - p;
}
if (l1 < l2) return l1;
#if CASEFOLD_FILESYSTEM
#define fncomp strncasecmp
#else
#define fncomp strncmp
#endif
if (fncomp(p+l1-l2, e, l2) == 0) {
return l1-l2;
}
return 0;
}
/*
* call-seq:
* File.basename(file_name [, suffix] ) -> base_name
*
* Returns the last component of the filename given in <i>file_name</i>,
* which must be formed using forward slashes (``<code>/</code>'')
* regardless of the separator used on the local file system. If
* <i>suffix</i> is given and present at the end of <i>file_name</i>,
* it is removed.
*
* File.basename("/home/gumby/work/ruby.rb") #=> "ruby.rb"
* File.basename("/home/gumby/work/ruby.rb", ".rb") #=> "ruby"
*/
static VALUE
rb_file_s_basename(VALUE rcv, SEL sel, int argc, VALUE *argv)
{
VALUE fname, fext, basename;
const char *name, *p;
int f, n;
if (rb_scan_args(argc, argv, "11", &fname, &fext) == 2) {
StringValue(fext);
}
FilePathStringValue(fname);
if (RSTRING_LEN(fname) == 0 || !*(name = RSTRING_PTR(fname))) {
return fname;
}
name = skipprefix(name);
while (isdirsep(*name))
name++;
if (!*name) {
p = name - 1;
f = 1;
}
else {
if (!(p = strrdirsep(name))) {
p = name;
}
else {
while (isdirsep(*p)) p++; /* skip last / */
}
n = chompdirsep(p) - p;
if (NIL_P(fext) || !(f = rmext(p, n, StringValueCStr(fext)))) {
f = n;
}
if (f == RSTRING_LEN(fname)) return fname;
}
basename = rb_str_new(p, f);
OBJ_INFECT(basename, fname);
return basename;
}
/*
* call-seq:
* File.dirname(file_name ) -> dir_name
*
* Returns all components of the filename given in <i>file_name</i>
* except the last one. The filename must be formed using forward
* slashes (``<code>/</code>'') regardless of the separator used on the
* local file system.
*
* File.dirname("/home/gumby/work/ruby.rb") #=> "/home/gumby/work"
*/
static VALUE
rb_file_s_dirname(VALUE klass, SEL sel, VALUE fname)
{
const char *name, *root, *p;
VALUE dirname;
FilePathStringValue(fname);
name = StringValueCStr(fname);
root = skiproot(name);
if (root > name + 1) {
name = root - 1;
}
p = strrdirsep(root);
if (!p) {
p = root;
}
if (p == name)
return rb_usascii_str_new2(".");
dirname = rb_str_new(name, p - name);
OBJ_INFECT(dirname, fname);
return dirname;
}
/*
* accept a String, and return the pointer of the extension.
* if len is passed, set the length of extension to it.
* returned pointer is in ``name'' or NULL.
* returns *len
* no dot NULL 0
* dotfile top 0
* end with dot dot 1
* .ext dot len of .ext
* .ext:stream dot len of .ext without :stream (NT only)
*
*/
const char *
ruby_find_extname(const char *name, long *len)
{
const char *p, *e;
p = strrdirsep(name); /* get the last path component */
if (!p) {
p = name;
}
else {
do {
name = ++p;
} while (isdirsep(*p));
}
e = 0;
while (*p && *p == '.') { p++; }
while (*p) {
if (*p == '.') {
e = p; /* get the last dot of the last component */
}
else if (isdirsep(*p)) {
break;
}
p = CharNext(p);
}
if (len) {
/* no dot, or the only dot is first or end? */
if (!e || e == name) {
*len = 0;
}
else if (e+1 == p) {
*len = 1;
}
else {
*len = p - e;
}
}
return e;
}
/*
* call-seq:
* File.extname(path) -> string
*
* Returns the extension (the portion of file name in <i>path</i>
* after the period).
*
* File.extname("test.rb") #=> ".rb"
* File.extname("a/b/d/test.rb") #=> ".rb"
* File.extname("test") #=> ""
* File.extname(".profile") #=> ""
*
*/
static VALUE
rb_file_s_extname(VALUE klass, SEL sel, VALUE fname)
{
const char *name, *e;
long len;
VALUE extname;
FilePathStringValue(fname);
name = StringValueCStr(fname);
e = ruby_find_extname(name, &len);
if (len <= 1) {
return rb_str_new(0, 0);
}
extname = rb_str_new(e, len); /* keep the dot, too! */
OBJ_INFECT(extname, fname);
return extname;
}
/*
* call-seq:
* File.path(path) -> string
*
* Returns the string representation of the path
*
* File.path("/dev/null") #=> "/dev/null"
* File.path(Pathname.new("/tmp")) #=> "/tmp"
*
*/
static VALUE
rb_file_s_path(VALUE klass, SEL sel, VALUE fname)
{
return rb_get_path(fname);
}
/*
* call-seq:
* File.split(file_name) => array
*
* Splits the given string into a directory and a file component and
* returns them in a two-element array. See also
* <code>File::dirname</code> and <code>File::basename</code>.
*
* File.split("/home/gumby/.profile") #=> ["/home/gumby", ".profile"]
*/
static VALUE
rb_file_s_split(VALUE klass, SEL sel, VALUE path)
{
FilePathStringValue(path); /* get rid of converting twice */
return rb_assoc_new(rb_file_s_dirname(Qnil, 0, path),
rb_file_s_basename(0,0,1,&path));
}
static VALUE separator;
static VALUE
rb_file_join(VALUE ary, VALUE sep)
{
assert(rb_str_chars_len(sep) == 1);
UChar sep_char = rb_str_get_uchar(sep, 0);
VALUE res = rb_str_new(NULL, 0);
for (long i = 0, count = RARRAY_LEN(ary); i < count; i++) {
VALUE tmp = RARRAY_AT(ary, i);
switch (TYPE(tmp)) {
case T_STRING:
break;
case T_ARRAY:
if (ary == tmp) {
rb_raise(rb_eArgError, "recursive array");
}
tmp = rb_file_join(tmp, sep);
break;
default:
FilePathStringValue(tmp);
}
#define uchar_at_is_sep(str, pos) (rb_str_get_uchar(str, pos) == sep_char)
if (i > 0 && !NIL_P(sep)) {
const long res_len = rb_str_chars_len(res);
const long tmp_len = rb_str_chars_len(tmp);
if (res_len > 0 && uchar_at_is_sep(res, res_len - 1)) {
if (tmp_len > 0 && uchar_at_is_sep(tmp, 0)) {
long nb_sep_char = 1;
while (nb_sep_char < res_len
&& uchar_at_is_sep(res, res_len - nb_sep_char - 1)) {
nb_sep_char++;
}
rb_str_delete(res, res_len - nb_sep_char, nb_sep_char);
}
}
else if (tmp_len == 0
|| rb_str_get_uchar(tmp, 0) != sep_char) {
rb_str_concat(res, sep);
}
}
rb_str_concat(res, tmp);
#undef uchar_at_is_sep
}
return res;
}
/*
* call-seq:
* File.join(string, ...) -> path
*
* Returns a new string formed by joining the strings using
* <code>File::SEPARATOR</code>.
*
* File.join("usr", "mail", "gumby") #=> "usr/mail/gumby"
*
*/
static VALUE
rb_file_s_join(VALUE klass, SEL sel, VALUE args)
{
return rb_file_join(args, separator);
}
/*
* call-seq:
* File.truncate(file_name, integer) => 0
*
* Truncates the file <i>file_name</i> to be at most <i>integer</i>
* bytes long. Not available on all platforms.
*
* f = File.new("out", "w")
* f.write("1234567890") #=> 10
* f.close #=> nil
* File.truncate("out", 5) #=> 0
* File.size("out") #=> 5
*
*/
static VALUE
rb_file_s_truncate(VALUE klass, SEL sel, VALUE path, VALUE len)
{
rb_secure(2);
const off_t pos = NUM2OFFT(len);
FilePathValue(path);
if (truncate(StringValueCStr(path), pos) < 0) {
rb_sys_fail(RSTRING_PTR(path));
}
return INT2FIX(0);
}
/*
* call-seq:
* file.truncate(integer) => 0
*
* Truncates <i>file</i> to at most <i>integer</i> bytes. The file
* must be opened for writing. Not available on all platforms.
*
* f = File.new("out", "w")
* f.syswrite("1234567890") #=> 10
* f.truncate(5) #=> 0
* f.close() #=> nil
* File.size("out") #=> 5
*/
static VALUE
rb_file_truncate(VALUE obj, SEL sel, VALUE len)
{
rb_secure(2);
rb_io_t *io = ExtractIOStruct(obj);
const off_t pos = NUM2OFFT(len);
rb_io_assert_writable(io);
if (ftruncate(io->fd, pos) < 0) {
rb_sys_fail(RSTRING_PTR(io->path));
}
return INT2FIX(0);
}
# ifndef LOCK_SH
# define LOCK_SH 1
# endif
# ifndef LOCK_EX
# define LOCK_EX 2
# endif
# ifndef LOCK_NB
# define LOCK_NB 4
# endif
# ifndef LOCK_UN
# define LOCK_UN 8
# endif
#ifdef __CYGWIN__
#include <winerror.h>
extern unsigned long __attribute__((stdcall)) GetLastError(void);
#endif
/*
* call-seq:
* file.flock (locking_constant ) => 0 or false
*
* Locks or unlocks a file according to <i>locking_constant</i> (a
* logical <em>or</em> of the values in the table below).
* Returns <code>false</code> if <code>File::LOCK_NB</code> is
* specified and the operation would otherwise have blocked. Not
* available on all platforms.
*
* Locking constants (in class File):
*
* LOCK_EX | Exclusive lock. Only one process may hold an
* | exclusive lock for a given file at a time.
* ----------+------------------------------------------------
* LOCK_NB | Don't block when locking. May be combined
* | with other lock options using logical or.
* ----------+------------------------------------------------
* LOCK_SH | Shared lock. Multiple processes may each hold a
* | shared lock for a given file at the same time.
* ----------+------------------------------------------------
* LOCK_UN | Unlock.
*
* Example:
*
* File.new("testfile").flock(File::LOCK_UN) #=> 0
*
*/
static VALUE
rb_file_flock(VALUE obj, SEL sel, VALUE operation)
{
#ifndef __CHECKER__
int op[2], op1;
rb_secure(2);
op[1] = op1 = NUM2INT(operation);
rb_io_t *io = ExtractIOStruct(obj);
op[0] = io->fd;
// if (io->mode & FMODE_WRITABLE) {
// rb_io_flush(obj);
// }
while (flock(op[0], op[1]) < 0) {
switch (errno) {
case EAGAIN:
case EACCES:
#if defined(EWOULDBLOCK) && EWOULDBLOCK != EAGAIN
case EWOULDBLOCK:
#endif
if (op1 & LOCK_NB) return Qfalse;
rb_thread_polling();
rb_io_check_closed(io);
continue;
case EINTR:
#if defined(ERESTART)
case ERESTART:
#endif
break;
default:
rb_sys_fail(RSTRING_PTR(io->path));
}
}
#endif
return INT2FIX(0);
}
#undef flock
static void
test_check(int n, int argc, VALUE *argv)
{
int i;
rb_secure(2);
n+=1;
if (n != argc) rb_raise(rb_eArgError, "wrong number of arguments (%d for %d)", argc, n);
for (i=1; i<n; i++) {
switch (TYPE(argv[i])) {
case T_STRING:
default:
FilePathValue(argv[i]);
break;
case T_FILE:
break;
}
}
}
#define CHECK(n) test_check((n), argc, argv)
/*
* call-seq:
* test(int_cmd, file1 [, file2] ) => obj
*
* Uses the integer <i>aCmd</i> to perform various tests on
* <i>file1</i> (first table below) or on <i>file1</i> and
* <i>file2</i> (second table).
*
* File tests on a single file:
*
* Test Returns Meaning
* ?A | Time | Last access time for file1
* ?b | boolean | True if file1 is a block device
* ?c | boolean | True if file1 is a character device
* ?C | Time | Last change time for file1
* ?d | boolean | True if file1 exists and is a directory
* ?e | boolean | True if file1 exists
* ?f | boolean | True if file1 exists and is a regular file
* ?g | boolean | True if file1 has the \CF{setgid} bit
* | | set (false under NT)
* ?G | boolean | True if file1 exists and has a group
* | | ownership equal to the caller's group
* ?k | boolean | True if file1 exists and has the sticky bit set
* ?l | boolean | True if file1 exists and is a symbolic link
* ?M | Time | Last modification time for file1
* ?o | boolean | True if file1 exists and is owned by
* | | the caller's effective uid
* ?O | boolean | True if file1 exists and is owned by
* | | the caller's real uid
* ?p | boolean | True if file1 exists and is a fifo
* ?r | boolean | True if file1 is readable by the effective
* | | uid/gid of the caller
* ?R | boolean | True if file is readable by the real
* | | uid/gid of the caller
* ?s | int/nil | If file1 has nonzero size, return the size,
* | | otherwise return nil
* ?S | boolean | True if file1 exists and is a socket
* ?u | boolean | True if file1 has the setuid bit set
* ?w | boolean | True if file1 exists and is writable by
* | | the effective uid/gid
* ?W | boolean | True if file1 exists and is writable by
* | | the real uid/gid
* ?x | boolean | True if file1 exists and is executable by
* | | the effective uid/gid
* ?X | boolean | True if file1 exists and is executable by
* | | the real uid/gid
* ?z | boolean | True if file1 exists and has a zero length
*
* Tests that take two files:
*
* ?- | boolean | True if file1 and file2 are identical
* ?= | boolean | True if the modification times of file1
* | | and file2 are equal
* ?< | boolean | True if the modification time of file1
* | | is prior to that of file2
* ?> | boolean | True if the modification time of file1
* | | is after that of file2
*/
static VALUE
rb_f_test(VALUE rcv, SEL sel, int argc, VALUE *argv)
{
int cmd;
if (argc == 0) rb_raise(rb_eArgError, "wrong number of arguments");
cmd = NUM2CHR(argv[0]);
if (cmd == 0) goto unknown;
if (strchr("bcdefgGkloOprRsSuwWxXz", cmd)) {
CHECK(1);
switch (cmd) {
case 'b':
return rb_file_blockdev_p(0, 0, argv[1]);
case 'c':
return rb_file_chardev_p(0, 0, argv[1]);
case 'd':
return rb_file_directory_p(0, 0, argv[1]);
case 'a':
case 'e':
return rb_file_exist_p(0, 0, argv[1]);
case 'f':
return rb_file_file_p(0, 0, argv[1]);
case 'g':
return rb_file_sgid_p(0, 0, argv[1]);
case 'G':
return rb_file_grpowned_p(0, 0, argv[1]);
case 'k':
return rb_file_sticky_p(0, 0, argv[1]);
case 'l':
return rb_file_symlink_p(0, 0, argv[1]);
case 'o':
return rb_file_owned_p(0, 0, argv[1]);
case 'O':
return rb_file_rowned_p(0, argv[1]);
case 'p':
return rb_file_pipe_p(0, 0, argv[1]);
case 'r':
return rb_file_readable_p(0, 0, argv[1]);
case 'R':
return rb_file_readable_real_p(0, 0, argv[1]);
case 's':
return rb_file_size_p(0, 0, argv[1]);
case 'S':
return rb_file_socket_p(0, 0, argv[1]);
case 'u':
return rb_file_suid_p(0, 0, argv[1]);
case 'w':
return rb_file_writable_p(0, 0, argv[1]);
case 'W':
return rb_file_world_writable_p(0, 0, argv[1]);
case 'x':
return rb_file_executable_p(0, 0, argv[1]);
case 'X':
return rb_file_executable_real_p(0, 0, argv[1]);
case 'z':
return rb_file_zero_p(0, 0, argv[1]);
}
}
if (strchr("MAC", cmd)) {
struct stat st;
CHECK(1);
if (rb_stat(argv[1], &st) == -1) {
rb_sys_fail(RSTRING_PTR(argv[1]));
}
switch (cmd) {
case 'A':
return stat_atime(&st);
case 'M':
return stat_mtime(&st);
case 'C':
return stat_ctime(&st);
}
}
if (cmd == '-') {
CHECK(2);
return rb_file_identical_p(0, 0, argv[1], argv[2]);
}
if (strchr("=<>", cmd)) {
struct stat st1, st2;
CHECK(2);
if (rb_stat(argv[1], &st1) < 0) return Qfalse;
if (rb_stat(argv[2], &st2) < 0) return Qfalse;
switch (cmd) {
case '=':
if (st1.st_mtime == st2.st_mtime) return Qtrue;
return Qfalse;
case '>':
if (st1.st_mtime > st2.st_mtime) return Qtrue;
return Qfalse;
case '<':
if (st1.st_mtime < st2.st_mtime) return Qtrue;
return Qfalse;
}
}
unknown:
/* unknown command */
if (ISPRINT(cmd)) {
rb_raise(rb_eArgError, "unknown command ?%c", cmd);
}
else {
rb_raise(rb_eArgError, "unknown command ?\\x%02X", cmd);
}
return Qnil; /* not reached */
}
/*
* Document-class: File::Stat
*
* Objects of class <code>File::Stat</code> encapsulate common status
* information for <code>File</code> objects. The information is
* recorded at the moment the <code>File::Stat</code> object is
* created; changes made to the file after that point will not be
* reflected. <code>File::Stat</code> objects are returned by
* <code>IO#stat</code>, <code>File::stat</code>,
* <code>File#lstat</code>, and <code>File::lstat</code>. Many of these
* methods return platform-specific values, and not all values are
* meaningful on all systems. See also <code>Kernel#test</code>.
*/
static VALUE
rb_stat_s_alloc(VALUE klass)
{
return stat_new_0(klass, 0);
}
/*
* call-seq:
*
* File::Stat.new(file_name) => stat
*
* Create a File::Stat object for the given file name (raising an
* exception if the file doesn't exist).
*/
static VALUE
rb_stat_init(VALUE obj, SEL sel, VALUE fname)
{
struct stat st, *nst;
rb_secure(2);
FilePathValue(fname);
if (stat(StringValueCStr(fname), &st) == -1) {
rb_sys_fail(RSTRING_PTR(fname));
}
if (DATA_PTR(obj)) {
free(DATA_PTR(obj));
DATA_PTR(obj) = NULL;
}
nst = ALLOC(struct stat);
*nst = st;
GC_WB(&DATA_PTR(obj), nst);
return Qnil;
}
/* :nodoc: */
static VALUE
rb_stat_init_copy(VALUE copy, SEL sel, VALUE orig)
{
struct stat *nst;
if (copy == orig) return orig;
rb_check_frozen(copy);
/* need better argument type check */
if (!rb_obj_is_instance_of(orig, rb_obj_class(copy))) {
rb_raise(rb_eTypeError, "wrong argument class");
}
if (DATA_PTR(copy)) {
free(DATA_PTR(copy));
DATA_PTR(copy) = 0;
}
if (DATA_PTR(orig)) {
nst = ALLOC(struct stat);
*nst = *(struct stat*)DATA_PTR(orig);
GC_WB(&DATA_PTR(copy), nst);
}
return copy;
}
/*
* call-seq:
* stat.ftype => string
*
* Identifies the type of <i>stat</i>. The return string is one of:
* ``<code>file</code>'', ``<code>directory</code>'',
* ``<code>characterSpecial</code>'', ``<code>blockSpecial</code>'',
* ``<code>fifo</code>'', ``<code>link</code>'',
* ``<code>socket</code>'', or ``<code>unknown</code>''.
*
* File.stat("/dev/tty").ftype #=> "characterSpecial"
*
*/
static VALUE
rb_stat_ftype(VALUE obj, SEL sel)
{
return rb_file_ftype(get_stat(obj));
}
/*
* call-seq:
* stat.directory? => true or false
*
* Returns <code>true</code> if <i>stat</i> is a directory,
* <code>false</code> otherwise.
*
* File.stat("testfile").directory? #=> false
* File.stat(".").directory? #=> true
*/
static VALUE
rb_stat_d(VALUE obj, SEL sel)
{
if (S_ISDIR(get_stat(obj)->st_mode)) return Qtrue;
return Qfalse;
}
/*
* call-seq:
* stat.pipe? => true or false
*
* Returns <code>true</code> if the operating system supports pipes and
* <i>stat</i> is a pipe; <code>false</code> otherwise.
*/
static VALUE
rb_stat_p(VALUE obj, SEL sel)
{
#ifdef S_IFIFO
if (S_ISFIFO(get_stat(obj)->st_mode)) return Qtrue;
#endif
return Qfalse;
}
/*
* call-seq:
* stat.symlink? => true or false
*
* Returns <code>true</code> if <i>stat</i> is a symbolic link,
* <code>false</code> if it isn't or if the operating system doesn't
* support this feature. As <code>File::stat</code> automatically
* follows symbolic links, <code>symlink?</code> will always be
* <code>false</code> for an object returned by
* <code>File::stat</code>.
*
* File.symlink("testfile", "alink") #=> 0
* File.stat("alink").symlink? #=> false
* File.lstat("alink").symlink? #=> true
*
*/
static VALUE
rb_stat_l(VALUE obj, SEL sel)
{
#ifdef S_ISLNK
if (S_ISLNK(get_stat(obj)->st_mode)) return Qtrue;
#endif
return Qfalse;
}
/*
* call-seq:
* stat.socket? => true or false
*
* Returns <code>true</code> if <i>stat</i> is a socket,
* <code>false</code> if it isn't or if the operating system doesn't
* support this feature.
*
* File.stat("testfile").socket? #=> false
*
*/
static VALUE
rb_stat_S(VALUE obj, SEL sel)
{
#ifdef S_ISSOCK
if (S_ISSOCK(get_stat(obj)->st_mode)) return Qtrue;
#endif
return Qfalse;
}
/*
* call-seq:
* stat.blockdev? => true or false
*
* Returns <code>true</code> if the file is a block device,
* <code>false</code> if it isn't or if the operating system doesn't
* support this feature.
*
* File.stat("testfile").blockdev? #=> false
* File.stat("/dev/hda1").blockdev? #=> true
*
*/
static VALUE
rb_stat_b(VALUE obj, SEL sel)
{
#ifdef S_ISBLK
if (S_ISBLK(get_stat(obj)->st_mode)) return Qtrue;
#endif
return Qfalse;
}
/*
* call-seq:
* stat.chardev? => true or false
*
* Returns <code>true</code> if the file is a character device,
* <code>false</code> if it isn't or if the operating system doesn't
* support this feature.
*
* File.stat("/dev/tty").chardev? #=> true
*
*/
static VALUE
rb_stat_c(VALUE obj, SEL sel)
{
if (S_ISCHR(get_stat(obj)->st_mode)) return Qtrue;
return Qfalse;
}
/*
* call-seq:
* stat.owned? => true or false
*
* Returns <code>true</code> if the effective user id of the process is
* the same as the owner of <i>stat</i>.
*
* File.stat("testfile").owned? #=> true
* File.stat("/etc/passwd").owned? #=> false
*
*/
static VALUE
rb_stat_owned(VALUE obj, SEL sel)
{
if (get_stat(obj)->st_uid == geteuid()) return Qtrue;
return Qfalse;
}
static VALUE
rb_stat_rowned(VALUE obj)
{
if (get_stat(obj)->st_uid == getuid()) return Qtrue;
return Qfalse;
}
/*
* call-seq:
* stat.grpowned? => true or false
*
* Returns true if the effective group id of the process is the same as
* the group id of <i>stat</i>. On Windows NT, returns <code>false</code>.
*
* File.stat("testfile").grpowned? #=> true
* File.stat("/etc/passwd").grpowned? #=> false
*
*/
static VALUE
rb_stat_grpowned(VALUE obj, SEL sel)
{
#ifndef _WIN32
if (group_member(get_stat(obj)->st_gid)) return Qtrue;
#endif
return Qfalse;
}
/*
* call-seq:
* stat.readable? => true or false
*
* Returns <code>true</code> if <i>stat</i> is readable by the
* effective user id of this process.
*
* File.stat("testfile").readable? #=> true
*
*/
static VALUE
rb_stat_r(VALUE obj, SEL sel)
{
struct stat *st = get_stat(obj);
#ifdef USE_GETEUID
if (geteuid() == 0) return Qtrue;
#endif
#ifdef S_IRUSR
if (rb_stat_owned(obj, 0))
return st->st_mode & S_IRUSR ? Qtrue : Qfalse;
#endif
#ifdef S_IRGRP
if (rb_stat_grpowned(obj, 0))
return st->st_mode & S_IRGRP ? Qtrue : Qfalse;
#endif
#ifdef S_IROTH
if (!(st->st_mode & S_IROTH)) return Qfalse;
#endif
return Qtrue;
}
/*
* call-seq:
* stat.readable_real? -> true or false
*
* Returns <code>true</code> if <i>stat</i> is readable by the real
* user id of this process.
*
* File.stat("testfile").readable_real? #=> true
*
*/
static VALUE
rb_stat_R(VALUE obj, SEL sel)
{
struct stat *st = get_stat(obj);
#ifdef USE_GETEUID
if (getuid() == 0) return Qtrue;
#endif
#ifdef S_IRUSR
if (rb_stat_rowned(obj))
return st->st_mode & S_IRUSR ? Qtrue : Qfalse;
#endif
#ifdef S_IRGRP
if (group_member(get_stat(obj)->st_gid))
return st->st_mode & S_IRGRP ? Qtrue : Qfalse;
#endif
#ifdef S_IROTH
if (!(st->st_mode & S_IROTH)) return Qfalse;
#endif
return Qtrue;
}
/*
* call-seq:
* stat.world_readable? => fixnum or nil
*
* If <i>stat</i> is readable by others, returns an integer
* representing the file permission bits of <i>stat</i>. Returns
* <code>nil</code> otherwise. The meaning of the bits is platform
* dependent; on Unix systems, see <code>stat(2)</code>.
*
* m = File.stat("/etc/passwd").world_readable? # => 420
* sprintf("%o", m) # => "644"
*/
static VALUE
rb_stat_wr(VALUE obj, SEL sel)
{
#ifdef S_IROTH
if ((get_stat(obj)->st_mode & (S_IROTH)) == S_IROTH) {
return UINT2NUM(get_stat(obj)->st_mode & (S_IRUGO|S_IWUGO|S_IXUGO));
}
else {
return Qnil;
}
#endif
}
/*
* call-seq:
* stat.writable? -> true or false
*
* Returns <code>true</code> if <i>stat</i> is writable by the
* effective user id of this process.
*
* File.stat("testfile").writable? #=> true
*
*/
static VALUE
rb_stat_w(VALUE obj, SEL sel)
{
struct stat *st = get_stat(obj);
#ifdef USE_GETEUID
if (geteuid() == 0) return Qtrue;
#endif
#ifdef S_IWUSR
if (rb_stat_owned(obj, 0))
return st->st_mode & S_IWUSR ? Qtrue : Qfalse;
#endif
#ifdef S_IWGRP
if (rb_stat_grpowned(obj, 0))
return st->st_mode & S_IWGRP ? Qtrue : Qfalse;
#endif
#ifdef S_IWOTH
if (!(st->st_mode & S_IWOTH)) return Qfalse;
#endif
return Qtrue;
}
/*
* call-seq:
* stat.writable_real? -> true or false
*
* Returns <code>true</code> if <i>stat</i> is writable by the real
* user id of this process.
*
* File.stat("testfile").writable_real? #=> true
*
*/
static VALUE
rb_stat_W(VALUE obj, SEL sel)
{
struct stat *st = get_stat(obj);
#ifdef USE_GETEUID
if (getuid() == 0) return Qtrue;
#endif
#ifdef S_IWUSR
if (rb_stat_rowned(obj))
return st->st_mode & S_IWUSR ? Qtrue : Qfalse;
#endif
#ifdef S_IWGRP
if (group_member(get_stat(obj)->st_gid))
return st->st_mode & S_IWGRP ? Qtrue : Qfalse;
#endif
#ifdef S_IWOTH
if (!(st->st_mode & S_IWOTH)) return Qfalse;
#endif
return Qtrue;
}
/*
* call-seq:
* stat.world_writable? => fixnum or nil
*
* If <i>stat</i> is writable by others, returns an integer
* representing the file permission bits of <i>stat</i>. Returns
* <code>nil</code> otherwise. The meaning of the bits is platform
* dependent; on Unix systems, see <code>stat(2)</code>.
*
* m = File.stat("/tmp").world_writable? # => 511
* sprintf("%o", m) # => "777"
*/
static VALUE
rb_stat_ww(VALUE obj, SEL sel)
{
#ifdef S_IROTH
if ((get_stat(obj)->st_mode & (S_IWOTH)) == S_IWOTH) {
return UINT2NUM(get_stat(obj)->st_mode & (S_IRUGO|S_IWUGO|S_IXUGO));
}
else {
return Qnil;
}
#endif
}
/*
* call-seq:
* stat.executable? => true or false
*
* Returns <code>true</code> if <i>stat</i> is executable or if the
* operating system doesn't distinguish executable files from
* nonexecutable files. The tests are made using the effective owner of
* the process.
*
* File.stat("testfile").executable? #=> false
*
*/
static VALUE
rb_stat_x(VALUE obj, SEL sel)
{
struct stat *st = get_stat(obj);
#ifdef USE_GETEUID
if (geteuid() == 0) {
return st->st_mode & S_IXUGO ? Qtrue : Qfalse;
}
#endif
#ifdef S_IXUSR
if (rb_stat_owned(obj, 0))
return st->st_mode & S_IXUSR ? Qtrue : Qfalse;
#endif
#ifdef S_IXGRP
if (rb_stat_grpowned(obj, 0))
return st->st_mode & S_IXGRP ? Qtrue : Qfalse;
#endif
#ifdef S_IXOTH
if (!(st->st_mode & S_IXOTH)) return Qfalse;
#endif
return Qtrue;
}
/*
* call-seq:
* stat.executable_real? => true or false
*
* Same as <code>executable?</code>, but tests using the real owner of
* the process.
*/
static VALUE
rb_stat_X(VALUE obj, SEL sel)
{
struct stat *st = get_stat(obj);
#ifdef USE_GETEUID
if (getuid() == 0) {
return st->st_mode & S_IXUGO ? Qtrue : Qfalse;
}
#endif
#ifdef S_IXUSR
if (rb_stat_rowned(obj))
return st->st_mode & S_IXUSR ? Qtrue : Qfalse;
#endif
#ifdef S_IXGRP
if (group_member(get_stat(obj)->st_gid))
return st->st_mode & S_IXGRP ? Qtrue : Qfalse;
#endif
#ifdef S_IXOTH
if (!(st->st_mode & S_IXOTH)) return Qfalse;
#endif
return Qtrue;
}
/*
* call-seq:
* stat.file? => true or false
*
* Returns <code>true</code> if <i>stat</i> is a regular file (not
* a device file, pipe, socket, etc.).
*
* File.stat("testfile").file? #=> true
*
*/
static VALUE
rb_stat_f(VALUE obj, SEL sel)
{
if (S_ISREG(get_stat(obj)->st_mode)) return Qtrue;
return Qfalse;
}
/*
* call-seq:
* stat.zero? => true or false
*
* Returns <code>true</code> if <i>stat</i> is a zero-length file;
* <code>false</code> otherwise.
*
* File.stat("testfile").zero? #=> false
*
*/
static VALUE
rb_stat_z(VALUE obj, SEL sel)
{
if (get_stat(obj)->st_size == 0) return Qtrue;
return Qfalse;
}
/*
* call-seq:
* state.size => integer
*
* Returns the size of <i>stat</i> in bytes.
*
* File.stat("testfile").size #=> 66
*
*/
static VALUE
rb_stat_s(VALUE obj, SEL sel)
{
off_t size = get_stat(obj)->st_size;
if (size == 0) return Qnil;
return OFFT2NUM(size);
}
/*
* call-seq:
* stat.setuid? => true or false
*
* Returns <code>true</code> if <i>stat</i> has the set-user-id
* permission bit set, <code>false</code> if it doesn't or if the
* operating system doesn't support this feature.
*
* File.stat("/bin/su").setuid? #=> true
*/
static VALUE
rb_stat_suid(VALUE obj, SEL sel)
{
#ifdef S_ISUID
if (get_stat(obj)->st_mode & S_ISUID) return Qtrue;
#endif
return Qfalse;
}
/*
* call-seq:
* stat.setgid? => true or false
*
* Returns <code>true</code> if <i>stat</i> has the set-group-id
* permission bit set, <code>false</code> if it doesn't or if the
* operating system doesn't support this feature.
*
* File.stat("/usr/sbin/lpc").setgid? #=> true
*
*/
static VALUE
rb_stat_sgid(VALUE obj, SEL sel)
{
#ifdef S_ISGID
if (get_stat(obj)->st_mode & S_ISGID) return Qtrue;
#endif
return Qfalse;
}
/*
* call-seq:
* stat.sticky? => true or false
*
* Returns <code>true</code> if <i>stat</i> has its sticky bit set,
* <code>false</code> if it doesn't or if the operating system doesn't
* support this feature.
*
* File.stat("testfile").sticky? #=> false
*
*/
static VALUE
rb_stat_sticky(VALUE obj, SEL sel)
{
#ifdef S_ISVTX
if (get_stat(obj)->st_mode & S_ISVTX) return Qtrue;
#endif
return Qfalse;
}
VALUE rb_mFConst;
void
rb_file_const(const char *name, VALUE value)
{
rb_define_const(rb_mFConst, name, value);
}
static int
is_absolute_path(const char *path)
{
return path[0] == '/';
}
#ifndef ENABLE_PATH_CHECK
# define ENABLE_PATH_CHECK 1
#endif
#if ENABLE_PATH_CHECK
static int
path_check_0(VALUE path, int execpath)
{
struct stat st;
const char *p0 = StringValueCStr(path);
char *p = 0, *s;
if (!is_absolute_path(p0)) {
VALUE newpath = ruby_getcwd();
rb_str_cat2(newpath, "/");
rb_str_cat2(newpath, p0);
path = newpath;
p0 = RSTRING_PTR(path);
}
for (;;) {
#ifndef S_IWOTH
# define S_IWOTH 002
#endif
if (stat(p0, &st) == 0 && S_ISDIR(st.st_mode) && (st.st_mode & S_IWOTH)
#ifdef S_ISVTX
&& !(p && execpath && (st.st_mode & S_ISVTX))
#endif
&& !access(p0, W_OK)) {
rb_warn("Insecure world writable dir %s in %sPATH, mode 0%o",
p0, (execpath ? "" : "LOAD_"), st.st_mode);
if (p) *p = '/';
return 0;
}
s = strrdirsep(p0);
if (p) *p = '/';
if (!s || s == p0) return 1;
p = s;
*p = '\0';
}
}
#endif
static int
fpath_check(const char *path)
{
#if ENABLE_PATH_CHECK
return path_check_0(rb_str_new2(path), Qfalse);
#else
return 1;
#endif
}
int
rb_path_check(const char *path)
{
#if ENABLE_PATH_CHECK
const char *p0, *p, *pend;
const char sep = PATH_SEP_CHAR;
if (!path) return 1;
pend = path + strlen(path);
p0 = path;
p = strchr(path, sep);
if (!p) p = pend;
for (;;) {
if (!path_check_0(rb_str_new(p0, p - p0), Qtrue)) {
return 0; /* not safe */
}
p0 = p + 1;
if (p0 > pend) break;
p = strchr(p0, sep);
if (!p) p = pend;
}
#endif
return 1;
}
static int
file_load_ok(const char *path)
{
return eaccess(path, R_OK) == 0;
}
VALUE rb_get_load_path(void);
int
rb_find_file_ext(VALUE *filep, const char *const *ext)
{
const char *path, *found;
const char *f = RSTRING_PTR(*filep);
VALUE fname, load_path;
long i, j;
if (f[0] == '~') {
fname = rb_file_expand_path(*filep, Qnil);
if (rb_safe_level() >= 2 && OBJ_TAINTED(fname)) {
rb_raise(rb_eSecurityError, "loading from unsafe file %s", f);
}
OBJ_FREEZE(fname);
f = StringValueCStr(fname);
*filep = fname;
}
if (is_absolute_path(f)) {
for (i=0; ext[i]; i++) {
fname = rb_str_dup(*filep);
rb_str_cat2(fname, ext[i]);
OBJ_FREEZE(fname);
if (file_load_ok(StringValueCStr(fname))) {
*filep = fname;
return i+1;
}
}
return 0;
}
load_path = rb_get_load_path();
if (!load_path) return 0;
for (j=0; ext[j]; j++) {
fname = rb_str_dup(*filep);
rb_str_cat2(fname, ext[j]);
OBJ_FREEZE(fname);
for (i = 0; i < RARRAY_LEN(load_path); i++) {
VALUE str = RARRAY_AT(load_path, i);
char fbuf[MAXPATHLEN];
FilePathValue(str);
if (RSTRING_LEN(str) == 0) continue;
path = RSTRING_PTR(str);
found = dln_find_file_r(StringValueCStr(fname), path, fbuf, sizeof(fbuf));
if (found && file_load_ok(found)) {
*filep = rb_str_new2(found);
return j+1;
}
}
}
RB_GC_GUARD(load_path);
return 0;
}
VALUE
rb_find_file(VALUE path)
{
VALUE tmp, load_path;
char *f = StringValueCStr(path);
const char *lpath;
char fbuf[MAXPATHLEN];
if (f[0] == '~') {
path = rb_file_expand_path(path, Qnil);
if (rb_safe_level() >= 1 && OBJ_TAINTED(path)) {
rb_raise(rb_eSecurityError, "loading from unsafe path %s", f);
}
OBJ_FREEZE(path);
f = StringValueCStr(path);
}
if (is_absolute_path(f)) {
if (rb_safe_level() >= 1 && !fpath_check(f)) {
rb_raise(rb_eSecurityError, "loading from unsafe file %s", f);
}
if (file_load_ok(f)) {
return path;
}
}
if (rb_safe_level() >= 4) {
rb_raise(rb_eSecurityError, "loading from non-absolute path %s", f);
}
load_path = rb_get_load_path();
if (load_path) {
long i, count;
tmp = rb_ary_new();
for (i=0, count=RARRAY_LEN(load_path);i < count;i++) {
VALUE str = RARRAY_AT(load_path, i);
FilePathValue(str);
if (RSTRING_LEN(str) > 0) {
rb_ary_push(tmp, str);
}
}
tmp = rb_ary_join(tmp, rb_str_new2(PATH_SEP));
if (RSTRING_LEN(tmp) == 0) {
lpath = 0;
}
else {
lpath = RSTRING_PTR(tmp);
}
}
else {
lpath = 0;
}
if (!lpath) {
return 0; /* no path, no load */
}
if (!(f = dln_find_file_r(f, lpath, fbuf, sizeof(fbuf)))) {
return 0;
}
if (rb_safe_level() >= 1 && !fpath_check(f)) {
rb_raise(rb_eSecurityError, "loading from unsafe file %s", f);
}
if (file_load_ok(f)) {
tmp = rb_str_new2(f);
OBJ_FREEZE(tmp);
return tmp;
}
return 0;
}
static void
define_filetest_function(const char *name, VALUE (*func)(ANYARGS), int argc)
{
rb_objc_define_method(*(VALUE *)rb_mFileTest, name, func, argc);
rb_objc_define_method(*(VALUE *)rb_cFile, name, func, argc);
}
/*
* A <code>File</code> is an abstraction of any file object accessible
* by the program and is closely associated with class <code>IO</code>
* <code>File</code> includes the methods of module
* <code>FileTest</code> as class methods, allowing you to write (for
* example) <code>File.exist?("foo")</code>.
*
* In the description of File methods,
* <em>permission bits</em> are a platform-specific
* set of bits that indicate permissions of a file. On Unix-based
* systems, permissions are viewed as a set of three octets, for the
* owner, the group, and the rest of the world. For each of these
* entities, permissions may be set to read, write, or execute the
* file:
*
* The permission bits <code>0644</code> (in octal) would thus be
* interpreted as read/write for owner, and read-only for group and
* other. Higher-order bits may also be used to indicate the type of
* file (plain, directory, pipe, socket, and so on) and various other
* special features. If the permissions are for a directory, the
* meaning of the execute bit changes; when set the directory can be
* searched.
*
* On non-Posix operating systems, there may be only the ability to
* make a file read-only or read-write. In this case, the remaining
* permission bits will be synthesized to resemble typical values. For
* instance, on Windows NT the default permission bits are
* <code>0644</code>, which means read/write for owner, read-only for
* all others. The only change that can be made is to make the file
* read-only, which is reported as <code>0444</code>.
*/
void
Init_File(void)
{
rb_mFileTest = rb_define_module("FileTest");
rb_cFile = rb_define_class("File", rb_cIO);
selToPath = sel_registerName("to_path");
define_filetest_function("directory?", rb_file_directory_p, 1);
define_filetest_function("exist?", rb_file_exist_p, 1);
define_filetest_function("exists?", rb_file_exist_p, 1);
define_filetest_function("readable?", rb_file_readable_p, 1);
define_filetest_function("readable_real?", rb_file_readable_real_p, 1);
define_filetest_function("world_readable?", rb_file_world_readable_p, 1);
define_filetest_function("writable?", rb_file_writable_p, 1);
define_filetest_function("writable_real?", rb_file_writable_real_p, 1);
define_filetest_function("world_writable?", rb_file_world_writable_p, 1);
define_filetest_function("executable?", rb_file_executable_p, 1);
define_filetest_function("executable_real?", rb_file_executable_real_p, 1);
define_filetest_function("file?", rb_file_file_p, 1);
define_filetest_function("zero?", rb_file_zero_p, 1);
define_filetest_function("size?", rb_file_size_p, 1);