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Remove direct _llseek code and require long filesystem libc.

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Felix Janda 2015-01-22 19:54:36 +01:00 committed by Vladimir Serbinenko
parent 6866f2ba37
commit 3bac4caa2b
4 changed files with 13 additions and 24 deletions
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4
ChangeLog
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@ -1,3 +1,7 @@
2015-01-22 Felix Janda <felix.janda@posteo.de>
Remove direct _llseek code and require long filesystem libc.
2015-01-20 Vladimir Serbinenko <phcoder@gmail.com>
Remove potential division by 0 in gfxmenu.

1
INSTALL
View file

@ -35,6 +35,7 @@ configuring the GRUB.
* GNU binutils 2.9.1.0.23 or later
* Flex 2.5.35 or later
* Other standard GNU/Unix tools
* a libc with large file support (e.g. glibc 2.1 or later)
On GNU/Linux, you also need:

8
configure.ac
View file

@ -366,6 +366,14 @@ case "$host_os" in
;;
esac
case "$host_os" in
cygwin | windows* | mingw32* | aros*)
;;
*)
AC_CHECK_SIZEOF(off_t)
test x"$ac_cv_sizeof_off_t" = x8 || AC_MSG_ERROR([Large file support is required]);;
esac
if test x$USE_NLS = xno; then
HOST_CFLAGS="$HOST_CFLAGS -fno-builtin-gettext"
fi

24
grub-core/osdep/unix/hostdisk.c
View file

@ -48,11 +48,6 @@
#ifdef __linux__
# include <sys/ioctl.h> /* ioctl */
# include <sys/mount.h>
# if !defined(__GLIBC__) || \
((__GLIBC__ < 2) || ((__GLIBC__ == 2) && (__GLIBC_MINOR__ < 1)))
/* Maybe libc doesn't have large file support. */
# include <linux/unistd.h> /* _llseek */
# endif /* (GLIBC < 2) || ((__GLIBC__ == 2) && (__GLIBC_MINOR < 1)) */
#endif /* __linux__ */
grub_uint64_t
@ -79,24 +74,6 @@ grub_util_get_fd_size (grub_util_fd_t fd, const char *name, unsigned *log_secsiz
return st.st_size;
}
#if defined(__linux__) && (!defined(__GLIBC__) || \
((__GLIBC__ < 2) || ((__GLIBC__ == 2) && (__GLIBC_MINOR__ < 1))))
/* Maybe libc doesn't have large file support. */
int
grub_util_fd_seek (grub_util_fd_t fd, grub_uint64_t off)
{
loff_t offset, result;
static int _llseek (uint filedes, ulong hi, ulong lo,
loff_t *res, uint wh);
_syscall5 (int, _llseek, uint, filedes, ulong, hi, ulong, lo,
loff_t *, res, uint, wh);
offset = (loff_t) off;
if (_llseek (fd, offset >> 32, offset & 0xffffffff, &result, SEEK_SET))
return -1;
return GRUB_ERR_NONE;
}
#else
int
grub_util_fd_seek (grub_util_fd_t fd, grub_uint64_t off)
{
@ -107,7 +84,6 @@ grub_util_fd_seek (grub_util_fd_t fd, grub_uint64_t off)
return 0;
}
#endif
/* Read LEN bytes from FD in BUF. Return less than or equal to zero if an