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file.c
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file.c
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/************************************************
file.c -
$Author$
$Date$
created at: Mon Nov 15 12:24:34 JST 1993
Copyright (C) 1993-2000 Yukihiro Matsumoto
************************************************/
#ifdef NT
#include "missing/file.h"
#endif
#include "ruby.h"
#include "rubyio.h"
#include "rubysig.h"
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifdef HAVE_SYS_PARAM_H
# include <sys/param.h>
#else
# define MAXPATHLEN 1024
#endif
#include <time.h>
#ifdef HAVE_SYS_TIME_H
# include <sys/time.h>
#else
#ifndef NT
struct timeval {
long tv_sec; /* seconds */
long tv_usec; /* and microseconds */
};
#endif /* NT */
#endif
VALUE rb_time_new _((time_t, time_t));
#ifdef HAVE_UTIME_H
#include <utime.h>
#endif
#ifdef HAVE_PWD_H
#include <pwd.h>
#endif
#ifndef HAVE_STRING_H
char *strrchr _((const char*,const char));
#endif
#include <sys/types.h>
#include <sys/stat.h>
#ifdef USE_CWGUSI
#include "macruby_missing.h"
extern int fileno(FILE *stream);
extern int utimes();
#endif
#ifndef strdup
char *strdup();
#endif
#ifdef __EMX__
#define lstat stat
#endif
VALUE rb_cFile;
VALUE rb_mFileTest;
static VALUE sStat;
static int
apply2files(func, vargs, arg)
int (*func)();
VALUE vargs;
void *arg;
{
int i;
VALUE path;
struct RArray *args = RARRAY(vargs);
for (i=0; i<args->len; i++) {
Check_SafeStr(args->ptr[i]);
}
for (i=0; i<args->len; i++) {
path = args->ptr[i];
if ((*func)(RSTRING(path)->ptr, arg) < 0)
rb_sys_fail(RSTRING(path)->ptr);
}
return args->len;
}
static VALUE
rb_file_path(obj)
VALUE obj;
{
OpenFile *fptr;
GetOpenFile(obj, fptr);
if (fptr->path == NULL) return Qnil;
return rb_str_new2(fptr->path);
}
#ifndef NT
# ifndef USE_CWGUSI
# include <sys/file.h>
# endif
#else
#include "missing/file.h"
#endif
static VALUE
stat_new(st)
struct stat *st;
{
if (!st) rb_bug("stat_new() called with bad value");
return rb_struct_new(sStat,
INT2FIX((int)st->st_dev),
INT2FIX((int)st->st_ino),
INT2FIX((int)st->st_mode),
INT2FIX((int)st->st_nlink),
INT2FIX((int)st->st_uid),
INT2FIX((int)st->st_gid),
#ifdef HAVE_ST_RDEV
INT2FIX((int)st->st_rdev),
#else
INT2FIX(0),
#endif
INT2FIX((int)st->st_size),
#ifdef HAVE_ST_BLKSIZE
INT2FIX((int)st->st_blksize),
#else
INT2FIX(0),
#endif
#ifdef HAVE_ST_BLOCKS
INT2FIX((int)st->st_blocks),
#else
INT2FIX(0),
#endif
rb_time_new(st->st_atime, 0),
rb_time_new(st->st_mtime, 0),
rb_time_new(st->st_ctime, 0));
}
static int
rb_stat(file, st)
VALUE file;
struct stat *st;
{
if (TYPE(file) == T_FILE) {
OpenFile *fptr;
rb_secure(4);
GetOpenFile(file, fptr);
return fstat(fileno(fptr->f), st);
}
Check_SafeStr(file);
#if defined DJGPP
if (RSTRING(file)->len == 0) return -1;
#endif
return stat(RSTRING(file)->ptr, st);
}
static VALUE
rb_file_s_stat(obj, fname)
VALUE obj, fname;
{
struct stat st;
Check_SafeStr(fname);
if (stat(RSTRING(fname)->ptr, &st) == -1) {
rb_sys_fail(RSTRING(fname)->ptr);
}
return stat_new(&st);
}
static VALUE
rb_io_stat(obj)
VALUE obj;
{
OpenFile *fptr;
struct stat st;
GetOpenFile(obj, fptr);
if (fstat(fileno(fptr->f), &st) == -1) {
rb_sys_fail(fptr->path);
}
return stat_new(&st);
}
static VALUE
rb_file_s_lstat(obj, fname)
VALUE obj, fname;
{
#if !defined(MSDOS) && !defined(NT) && !defined(__EMX__)
struct stat st;
Check_SafeStr(fname);
if (lstat(RSTRING(fname)->ptr, &st) == -1) {
rb_sys_fail(RSTRING(fname)->ptr);
}
return stat_new(&st);
#else
rb_notimplement();
return Qnil; /* not reached */
#endif
}
static VALUE
rb_file_lstat(obj)
VALUE obj;
{
#if !defined(MSDOS) && !defined(NT)
OpenFile *fptr;
struct stat st;
rb_secure(4);
GetOpenFile(obj, fptr);
if (lstat(fptr->path, &st) == -1) {
rb_sys_fail(fptr->path);
}
return stat_new(&st);
#else
rb_notimplement();
return Qnil; /* not reached */
#endif
}
static int
group_member(gid)
GETGROUPS_T gid;
{
#if !defined(NT) && !defined(USE_CWGUSI)
if (getgid() == gid || getegid() == gid)
return Qtrue;
# ifdef HAVE_GETGROUPS
# ifndef NGROUPS
# define NGROUPS 32
# endif
{
GETGROUPS_T gary[NGROUPS];
int anum;
anum = getgroups(NGROUPS, gary);
while (--anum >= 0)
if (gary[anum] == gid)
return Qtrue;
}
# endif
#endif
return Qfalse;
}
#ifndef S_IXUGO
# define S_IXUGO (S_IXUSR | S_IXGRP | S_IXOTH)
#endif
int
eaccess(path, mode)
const char *path;
int mode;
{
#ifndef NT
struct stat st;
static int euid = -1;
if (stat(path, &st) < 0) return (-1);
if (euid == -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;
}
if (st.st_uid == euid) /* owner */
mode <<= 6;
else if (group_member (st.st_gid))
mode <<= 3;
if (st.st_mode & mode) return 0;
return -1;
#else /* !NT */
return access(path, mode);
#endif
}
static VALUE
test_d(obj, fname)
VALUE obj, 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;
}
static VALUE
test_p(obj, fname)
VALUE obj, 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;
}
static VALUE
test_l(obj, fname)
VALUE obj, 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;
Check_SafeStr(fname);
if (lstat(RSTRING(fname)->ptr, &st) < 0) return Qfalse;
if (S_ISLNK(st.st_mode)) return Qtrue;
#endif
return Qfalse;
}
static VALUE
test_S(obj, fname)
VALUE obj, 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;
}
static VALUE
test_b(obj, fname)
VALUE obj, 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;
}
static VALUE
test_c(obj, fname)
VALUE obj, 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;
}
static VALUE
test_e(obj, fname)
VALUE obj, fname;
{
struct stat st;
if (rb_stat(fname, &st) < 0) return Qfalse;
return Qtrue;
}
static VALUE
test_r(obj, fname)
VALUE obj, fname;
{
Check_SafeStr(fname);
if (eaccess(RSTRING(fname)->ptr, R_OK) < 0) return Qfalse;
return Qtrue;
}
static VALUE
test_R(obj, fname)
VALUE obj, fname;
{
Check_SafeStr(fname);
if (access(RSTRING(fname)->ptr, R_OK) < 0) return Qfalse;
return Qtrue;
}
static VALUE
test_w(obj, fname)
VALUE obj, fname;
{
Check_SafeStr(fname);
if (eaccess(RSTRING(fname)->ptr, W_OK) < 0) return Qfalse;
return Qtrue;
}
static VALUE
test_W(obj, fname)
VALUE obj, fname;
{
Check_SafeStr(fname);
if (access(RSTRING(fname)->ptr, W_OK) < 0) return Qfalse;
return Qtrue;
}
static VALUE
test_x(obj, fname)
VALUE obj, fname;
{
Check_SafeStr(fname);
if (eaccess(RSTRING(fname)->ptr, X_OK) < 0) return Qfalse;
return Qtrue;
}
static VALUE
test_X(obj, fname)
VALUE obj, fname;
{
Check_SafeStr(fname);
if (access(RSTRING(fname)->ptr, X_OK) < 0) return Qfalse;
return Qtrue;
}
#ifndef S_ISREG
# define S_ISREG(m) ((m & S_IFMT) == S_IFREG)
#endif
static VALUE
test_f(obj, fname)
VALUE obj, fname;
{
struct stat st;
if (rb_stat(fname, &st) < 0) return Qfalse;
if (S_ISREG(st.st_mode)) return Qtrue;
return Qfalse;
}
static VALUE
test_z(obj, fname)
VALUE obj, fname;
{
struct stat st;
if (rb_stat(fname, &st) < 0) return Qfalse;
if (st.st_size == 0) return Qtrue;
return Qfalse;
}
static VALUE
test_s(obj, fname)
VALUE obj, fname;
{
struct stat st;
if (rb_stat(fname, &st) < 0) return Qnil;
if (st.st_size == 0) return Qnil;
return rb_int2inum(st.st_size);
}
static VALUE
test_owned(obj, fname)
VALUE obj, fname;
{
struct stat st;
if (rb_stat(fname, &st) < 0) return Qfalse;
if (st.st_uid == geteuid()) return Qtrue;
return Qfalse;
}
static VALUE
test_rowned(obj, fname)
VALUE obj, fname;
{
struct stat st;
if (rb_stat(fname, &st) < 0) return Qfalse;
if (st.st_uid == getuid()) return Qtrue;
return Qfalse;
}
static VALUE
test_grpowned(obj, fname)
VALUE obj, fname;
{
#ifndef NT
struct stat st;
if (rb_stat(fname, &st) < 0) return Qfalse;
if (st.st_gid == getegid()) return Qtrue;
#endif
return Qfalse;
}
#if defined(S_ISUID) || defined(S_ISGID) || defined(S_ISVTX)
static VALUE
check3rdbyte(file, mode)
const char *file;
int mode;
{
struct stat st;
if (stat(file, &st) < 0) return Qfalse;
if (st.st_mode & mode) return Qtrue;
return Qfalse;
}
#endif
static VALUE
test_suid(obj, fname)
VALUE obj, fname;
{
#ifdef S_ISUID
Check_SafeStr(fname);
return check3rdbyte(RSTRING(fname)->ptr, S_ISUID);
#else
return Qfalse;
#endif
}
static VALUE
test_sgid(obj, fname)
VALUE obj, fname;
{
#ifndef NT
Check_SafeStr(fname);
return check3rdbyte(RSTRING(fname)->ptr, S_ISGID);
#else
return Qfalse;
#endif
}
static VALUE
test_sticky(obj, fname)
VALUE obj, fname;
{
#ifdef S_ISVTX
return check3rdbyte(STR2CSTR(fname), S_ISVTX);
#else
return Qnil;
#endif
}
static VALUE
rb_file_s_size(obj, fname)
VALUE obj, fname;
{
struct stat st;
if (rb_stat(fname, &st) < 0)
rb_sys_fail(RSTRING(fname)->ptr);
return rb_int2inum(st.st_size);
}
static VALUE
rb_file_s_ftype(obj, fname)
VALUE obj, fname;
{
struct stat st;
char *t;
#if defined(MSDOS) || defined(NT)
if (rb_stat(fname, &st) < 0)
rb_sys_fail(RSTRING(fname)->ptr);
#else
Check_SafeStr(fname);
if (lstat(RSTRING(fname)->ptr, &st) == -1) {
rb_sys_fail(RSTRING(fname)->ptr);
}
#endif
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_str_new2(t);
}
static VALUE
rb_file_s_atime(obj, fname)
VALUE obj, fname;
{
struct stat st;
if (rb_stat(fname, &st) < 0)
rb_sys_fail(RSTRING(fname)->ptr);
return rb_time_new(st.st_atime, 0);
}
static VALUE
rb_file_atime(obj)
VALUE obj;
{
OpenFile *fptr;
struct stat st;
GetOpenFile(obj, fptr);
if (fstat(fileno(fptr->f), &st) == -1) {
rb_sys_fail(fptr->path);
}
return rb_time_new(st.st_atime, 0);
}
static VALUE
rb_file_s_mtime(obj, fname)
VALUE obj, fname;
{
struct stat st;
if (rb_stat(fname, &st) < 0)
rb_sys_fail(RSTRING(fname)->ptr);
return rb_time_new(st.st_mtime, 0);
}
static VALUE
rb_file_mtime(obj)
VALUE obj;
{
OpenFile *fptr;
struct stat st;
GetOpenFile(obj, fptr);
if (fstat(fileno(fptr->f), &st) == -1) {
rb_sys_fail(fptr->path);
}
return rb_time_new(st.st_mtime, 0);
}
static VALUE
rb_file_s_ctime(obj, fname)
VALUE obj, fname;
{
struct stat st;
if (rb_stat(fname, &st) < 0)
rb_sys_fail(RSTRING(fname)->ptr);
return rb_time_new(st.st_ctime, 0);
}
static VALUE
rb_file_ctime(obj)
VALUE obj;
{
OpenFile *fptr;
struct stat st;
GetOpenFile(obj, fptr);
if (fstat(fileno(fptr->f), &st) == -1) {
rb_sys_fail(fptr->path);
}
return rb_time_new(st.st_ctime, 0);
}
static void
chmod_internal(path, mode)
const char *path;
int mode;
{
if (chmod(path, mode) == -1)
rb_sys_fail(path);
}
static VALUE
rb_file_s_chmod(argc, argv)
int argc;
VALUE *argv;
{
VALUE vmode;
VALUE rest;
int mode, n;
rb_scan_args(argc, argv, "1*", &vmode, &rest);
mode = NUM2INT(vmode);
n = apply2files(chmod_internal, rest, mode);
return INT2FIX(n);
}
static VALUE
rb_file_chmod(obj, vmode)
VALUE obj, vmode;
{
OpenFile *fptr;
int mode;
rb_secure(4);
mode = NUM2INT(vmode);
GetOpenFile(obj, fptr);
#if defined(DJGPP) || defined(NT) || defined(USE_CWGUSI) || defined(__BEOS__) || defined(__EMX__)
if (chmod(fptr->path, mode) == -1)
rb_sys_fail(fptr->path);
#else
if (fchmod(fileno(fptr->f), mode) == -1)
rb_sys_fail(fptr->path);
#endif
return INT2FIX(0);
}
struct chown_args {
int owner, group;
};
static void
chown_internal(path, args)
const char *path;
struct chown_args *args;
{
if (chown(path, args->owner, args->group) < 0)
rb_sys_fail(path);
}
static VALUE
rb_file_s_chown(argc, argv)
int argc;
VALUE *argv;
{
VALUE o, g, rest;
struct chown_args arg;
int n;
rb_scan_args(argc, argv, "2*", &o, &g, &rest);
if (NIL_P(o)) {
arg.owner = -1;
}
else {
arg.owner = NUM2INT(o);
}
if (NIL_P(g)) {
arg.group = -1;
}
else {
arg.group = NUM2INT(g);
}
n = apply2files(chown_internal, rest, &arg);
return INT2FIX(n);
}
static VALUE
rb_file_chown(obj, owner, group)
VALUE obj, owner, group;
{
OpenFile *fptr;
rb_secure(4);
GetOpenFile(obj, fptr);
#if defined(DJGPP) || defined(__CYGWIN32__) || defined(NT) || defined(USE_CWGUSI) || defined(__EMX__)
if (chown(fptr->path, NUM2INT(owner), NUM2INT(group)) == -1)
rb_sys_fail(fptr->path);
#else
if (fchown(fileno(fptr->f), NUM2INT(owner), NUM2INT(group)) == -1)
rb_sys_fail(fptr->path);
#endif
return INT2FIX(0);
}
struct timeval rb_time_timeval();
#ifdef HAVE_UTIMES
static void
utime_internal(path, tvp)
char *path;
struct timeval tvp[];
{
if (utimes(path, tvp) < 0)
rb_sys_fail(path);
}
static VALUE
rb_file_s_utime(argc, argv)
int argc;
VALUE *argv;
{
VALUE atime, mtime, rest;
struct timeval tvp[2];
int n;
rb_scan_args(argc, argv, "2*", &atime, &mtime, &rest);
tvp[0] = rb_time_timeval(atime);
tvp[1] = rb_time_timeval(mtime);
n = apply2files(utime_internal, rest, tvp);
return INT2FIX(n);
}
#else
#ifndef HAVE_UTIME_H
# ifdef NT
# if defined(__BORLANDC__)
# include <utime.h>
# else
# include <sys/utime.h>
# endif
# if defined(_MSC_VER)
# define utimbuf _utimbuf
# endif
# else
struct utimbuf {
long actime;
long modtime;
};
# endif
#endif
static void
utime_internal(path, utp)
const char *path;
struct utimbuf *utp;
{
if (utime(path, utp) < 0)
rb_sys_fail(path);
}
static VALUE
rb_file_s_utime(argc, argv)
int argc;
VALUE *argv;
{
VALUE atime, mtime, rest;
int n;
struct timeval tv;
struct utimbuf utbuf;
rb_scan_args(argc, argv, "2*", &atime, &mtime, &rest);
tv = rb_time_timeval(atime);
utbuf.actime = tv.tv_sec;
tv = rb_time_timeval(mtime);
utbuf.modtime = tv.tv_sec;
n = apply2files(utime_internal, rest, &utbuf);
return INT2FIX(n);
}
#endif
static VALUE
rb_file_s_link(obj, from, to)
VALUE obj, from, to;
{
#if defined(USE_CWGUSI)
rb_notimplement();
#else
Check_SafeStr(from);
Check_SafeStr(to);
if (link(RSTRING(from)->ptr, RSTRING(to)->ptr) < 0)
rb_sys_fail(RSTRING(from)->ptr);
return INT2FIX(0);
#endif /* USE_CWGUSI */
}
static VALUE
rb_file_s_symlink(obj, from, to)
VALUE obj, from, to;
{
#if !defined(MSDOS) && !defined(NT) && !defined(__EMX__)
Check_SafeStr(from);
Check_SafeStr(to);
if (symlink(RSTRING(from)->ptr, RSTRING(to)->ptr) < 0)
rb_sys_fail(RSTRING(from)->ptr);
return INT2FIX(0);
#else
rb_notimplement();
return Qnil; /* not reached */
#endif
}
static VALUE
rb_file_s_readlink(obj, path)
VALUE obj, path;
{
#if !defined(MSDOS) && !defined(NT) && !defined(__EMX__)
char buf[MAXPATHLEN];
int cc;
Check_SafeStr(path);
if ((cc = readlink(RSTRING(path)->ptr, buf, MAXPATHLEN)) < 0)
rb_sys_fail(RSTRING(path)->ptr);
return rb_tainted_str_new(buf, cc);
#else
rb_notimplement();
return Qnil; /* not reached */
#endif
}
static void
unlink_internal(path)
const char *path;