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re PR libstdc++/66011 (call to '__open_missing_mode' declared with attribute error)

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PR libstdc++/66011
	* acinclude.m4 (GLIBCXX_CHECK_FILESYSTEM_DEPS): Check for fchmod and
	sendfile.
	* config.h.in: Regenerate.
	* configure: Regenerate.
	* src/filesystem/ops.cc (do_copy_file): Fix arguments to open(). Do
	not return after copying contents. Use fchmod, fchmodat, and sendfile
	when available.
	(current_path, permissions, space): Use errno not return value.

From-SVN: r223196
This commit is contained in:
Jonathan Wakely 2015-05-14 14:23:14 +01:00 committed by Jonathan Wakely
parent 0b9fc9fee8
commit a0c4531ccf
5 changed files with 197 additions and 21 deletions
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10
libstdc++-v3/ChangeLog
View File

@ -1,5 +1,15 @@
2015-05-14 Jonathan Wakely <jwakely@redhat.com>
PR libstdc++/66011
* acinclude.m4 (GLIBCXX_CHECK_FILESYSTEM_DEPS): Check for fchmod and
sendfile.
* config.h.in: Regenerate.
* configure: Regenerate.
* src/filesystem/ops.cc (do_copy_file): Fix arguments to open(). Do
not return after copying contents. Use fchmod, fchmodat, and sendfile
when available.
(current_path, permissions, space): Use errno not return value.
PR libstdc++/66018
* acinclude.m4 (GLIBCXX_CHECK_FILESYSTEM_DEPS): Check for struct
dirent.d_type.

33
libstdc++-v3/acinclude.m4
View File

@ -3938,6 +3938,19 @@ dnl
AC_DEFINE(_GLIBCXX_USE_ST_MTIM, 1, [Define if struct stat has timespec members.])
fi
AC_MSG_RESULT($glibcxx_cv_st_mtim)
dnl
AC_MSG_CHECKING([for fchmod])
AC_CACHE_VAL(glibcxx_cv_fchmod, [dnl
GCC_TRY_COMPILE_OR_LINK(
[#include <sys/stat.h>],
[fchmod(1, S_IWUSR);],
[glibcxx_cv_fchmod=yes],
[glibcxx_cv_fchmod=no])
])
if test $glibcxx_cv_fchmod = yes; then
AC_DEFINE(_GLIBCXX_USE_FCHMOD, 1, [Define if fchmod is available in <sys/stat.h>.])
fi
AC_MSG_RESULT($glibcxx_cv_fchmod)
dnl
AC_MSG_CHECKING([for fchmodat])
AC_CACHE_VAL(glibcxx_cv_fchmodat, [dnl
@ -3954,6 +3967,26 @@ dnl
AC_DEFINE(_GLIBCXX_USE_FCHMODAT, 1, [Define if fchmodat is available in <sys/stat.h>.])
fi
AC_MSG_RESULT($glibcxx_cv_fchmodat)
dnl
AC_MSG_CHECKING([for sendfile that can copy files])
AC_CACHE_VAL(glibcxx_cv_sendfile, [dnl
case "${target_os}" in
gnu* | linux* | solaris*)
GCC_TRY_COMPILE_OR_LINK(
[#include <sys/sendfile.h>],
[sendfile(1, 2, (off_t*)NULL, sizeof 1);],
[glibcxx_cv_sendfile=yes],
[glibcxx_cv_sendfile=no])
;;
*)
glibcxx_cv_sendfile=no
;;
esac
])
if test $glibcxx_cv_sendfile = yes; then
AC_DEFINE(_GLIBCXX_USE_SENDFILE, 1, [Define if sendfile is available in <sys/stat.h>.])
fi
AC_MSG_RESULT($glibcxx_cv_sendfile)
dnl
CXXFLAGS="$ac_save_CXXFLAGS"
AC_LANG_RESTORE

6
libstdc++-v3/config.h.in
View File

@ -836,6 +836,9 @@
this host. */
#undef _GLIBCXX_USE_DECIMAL_FLOAT
/* Define if fchmod is available in <sys/stat.h>. */
#undef _GLIBCXX_USE_FCHMOD
/* Define if fchmodat is available in <sys/stat.h>. */
#undef _GLIBCXX_USE_FCHMODAT
@ -885,6 +888,9 @@
/* Define if _SC_NPROC_ONLN is available in <unistd.h>. */
#undef _GLIBCXX_USE_SC_NPROC_ONLN
/* Define if sendfile is available in <sys/stat.h>. */
#undef _GLIBCXX_USE_SENDFILE
/* Define if struct stat has timespec members. */
#undef _GLIBCXX_USE_ST_MTIM

119
libstdc++-v3/configure vendored
View File

@ -79092,6 +79092,62 @@ $as_echo "#define _GLIBCXX_USE_ST_MTIM 1" >>confdefs.h
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_st_mtim" >&5
$as_echo "$glibcxx_cv_st_mtim" >&6; }
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for fchmod" >&5
$as_echo_n "checking for fchmod... " >&6; }
if test "${glibcxx_cv_fchmod+set}" = set; then :
$as_echo_n "(cached) " >&6
else
if test x$gcc_no_link = xyes; then
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
#include <sys/stat.h>
int
main ()
{
fchmod(1, S_IWUSR);
;
return 0;
}
_ACEOF
if ac_fn_cxx_try_compile "$LINENO"; then :
glibcxx_cv_fchmod=yes
else
glibcxx_cv_fchmod=no
fi
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
else
if test x$gcc_no_link = xyes; then
as_fn_error "Link tests are not allowed after GCC_NO_EXECUTABLES." "$LINENO" 5
fi
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
#include <sys/stat.h>
int
main ()
{
fchmod(1, S_IWUSR);
;
return 0;
}
_ACEOF
if ac_fn_cxx_try_link "$LINENO"; then :
glibcxx_cv_fchmod=yes
else
glibcxx_cv_fchmod=no
fi
rm -f core conftest.err conftest.$ac_objext \
conftest$ac_exeext conftest.$ac_ext
fi
fi
if test $glibcxx_cv_fchmod = yes; then
$as_echo "#define _GLIBCXX_USE_FCHMOD 1" >>confdefs.h
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_fchmod" >&5
$as_echo "$glibcxx_cv_fchmod" >&6; }
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for fchmodat" >&5
$as_echo_n "checking for fchmodat... " >&6; }
if test "${glibcxx_cv_fchmodat+set}" = set; then :
@ -79154,6 +79210,69 @@ $as_echo "#define _GLIBCXX_USE_FCHMODAT 1" >>confdefs.h
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_fchmodat" >&5
$as_echo "$glibcxx_cv_fchmodat" >&6; }
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for sendfile that can copy files" >&5
$as_echo_n "checking for sendfile that can copy files... " >&6; }
if test "${glibcxx_cv_sendfile+set}" = set; then :
$as_echo_n "(cached) " >&6
else
case "${target_os}" in
gnu* | linux* | kfreebsd*-gnu | knetbsd*-gnu | solaris*)
if test x$gcc_no_link = xyes; then
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
#include <sys/sendfile.h>
int
main ()
{
sendfile(1, 2, (off_t*)NULL, sizeof 1);
;
return 0;
}
_ACEOF
if ac_fn_cxx_try_compile "$LINENO"; then :
glibcxx_cv_sendfile=yes
else
glibcxx_cv_sendfile=no
fi
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
else
if test x$gcc_no_link = xyes; then
as_fn_error "Link tests are not allowed after GCC_NO_EXECUTABLES." "$LINENO" 5
fi
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
#include <sys/sendfile.h>
int
main ()
{
sendfile(1, 2, (off_t*)NULL, sizeof 1);
;
return 0;
}
_ACEOF
if ac_fn_cxx_try_link "$LINENO"; then :
glibcxx_cv_sendfile=yes
else
glibcxx_cv_sendfile=no
fi
rm -f core conftest.err conftest.$ac_objext \
conftest$ac_exeext conftest.$ac_ext
fi
;;
*)
glibcxx_cv_sendfile=no
;;
esac
fi
if test $glibcxx_cv_sendfile = yes; then
$as_echo "#define _GLIBCXX_USE_SENDFILE 1" >>confdefs.h
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_sendfile" >&5
$as_echo "$glibcxx_cv_sendfile" >&6; }
CXXFLAGS="$ac_save_CXXFLAGS"
ac_ext=c
ac_cpp='$CPP $CPPFLAGS'

48
libstdc++-v3/src/filesystem/ops.cc
View File

@ -41,7 +41,7 @@
#ifdef _GLIBCXX_HAVE_SYS_STATVFS_H
# include <sys/statvfs.h>
#endif
#ifdef _GLIBCXX_HAVE_GNU_SENDFILE
#ifdef _GLIBCXX_USE_SENDFILE
# include <sys/sendfile.h>
#else
# include <ext/stdio_filebuf.h>
@ -241,6 +241,8 @@ namespace
}
f = make_file_status(*from_st);
using opts = fs::copy_options;
if (exists(t))
{
if (!is_other(t) && !is_other(f)
@ -251,12 +253,12 @@ namespace
return false;
}
if (is_set(option, fs::copy_options::skip_existing))
if (is_set(option, opts::skip_existing))
{
ec.clear();
return false;
}
else if (is_set(option, fs::copy_options::update_existing))
else if (is_set(option, opts::update_existing))
{
if (file_time(*from_st) <= file_time(*to_st))
{
@ -264,7 +266,7 @@ namespace
return false;
}
}
else if (!is_set(option, fs::copy_options::overwrite_existing))
else if (!is_set(option, opts::overwrite_existing))
{
ec = std::make_error_code(std::errc::file_exists);
return false;
@ -282,14 +284,22 @@ namespace
ec.assign(errno, std::generic_category());
return false;
}
CloseFD out = { ::open(to.c_str(), O_WRONLY|O_CREAT) };
int oflag = O_WRONLY|O_CREAT;
if (is_set(option, opts::overwrite_existing|opts::update_existing))
oflag |= O_TRUNC;
else
oflag |= O_EXCL;
CloseFD out = { ::open(to.c_str(), oflag, S_IWUSR) };
if (out.fd == -1)
{
if (errno == EEXIST && is_set(option, opts::skip_existing))
ec.clear();
else
ec.assign(errno, std::generic_category());
return false;
}
#ifdef _GLIBCXX_HAVE_GNU_SENDFILE
#ifdef _GLIBCXX_USE_SENDFILE
auto n = ::sendfile(out.fd, in.fd, nullptr, from_st->st_size);
if (n != from_st->st_size)
{
@ -299,20 +309,17 @@ namespace
#else
__gnu_cxx::stdio_filebuf<char> sbin(in.fd, std::ios::in);
__gnu_cxx::stdio_filebuf<char> sbout(out.fd, std::ios::out);
if (std::ostream(&sbout) << &sbin)
{
ec.clear();
return true;
}
else
if ( !(std::ostream(&sbout) << &sbin) )
{
ec = std::make_error_code(std::errc::io_error);
return false;
}
#endif
#ifdef _GLIBCXX_HAVE_FCHMOD
#ifdef _GLIBCXX_USE_FCHMOD
if (::fchmod(out.fd, from_st->st_mode))
#elif _GLIBCXX_USE_FCHMODAT
if (::fchmodat(AT_FDCWD, to.c_str(), from_st->st_mode, 0))
#else
if (::chmod(to.c_str(), from_st->st_mode))
#endif
@ -320,6 +327,7 @@ namespace
ec.assign(errno, std::generic_category());
return false;
}
ec.clear();
return true;
}
}
@ -715,8 +723,8 @@ void
fs::current_path(const path& p, error_code& ec) noexcept
{
#ifdef _GLIBCXX_HAVE_UNISTD_H
if (int err = ::chdir(p.c_str()))
ec.assign(err, std::generic_category());
if (::chdir(p.c_str()))
ec.assign(errno, std::generic_category());
else
ec.clear();
#else
@ -908,11 +916,11 @@ fs::permissions(const path& p, perms prms)
void fs::permissions(const path& p, perms prms, error_code& ec) noexcept
{
#if _GLIBCXX_USE_FCHMODAT
if (int err = ::fchmodat(AT_FDCWD, p.c_str(), static_cast<mode_t>(prms), 0))
if (::fchmodat(AT_FDCWD, p.c_str(), static_cast<mode_t>(prms), 0))
#else
if (int err = ::chmod(p.c_str(), static_cast<mode_t>(prms)))
if (::chmod(p.c_str(), static_cast<mode_t>(prms)))
#endif
ec.assign(err, std::generic_category());
ec.assign(errno, std::generic_category());
else
ec.clear();
}
@ -1064,8 +1072,8 @@ fs::space(const path& p, error_code& ec) noexcept
};
#ifdef _GLIBCXX_HAVE_SYS_STATVFS_H
struct ::statvfs f;
if (int err = ::statvfs(p.c_str(), &f))
ec.assign(err, std::generic_category());
if (::statvfs(p.c_str(), &f))
ec.assign(errno, std::generic_category());
else
{
info = space_info{