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sim: dv-cfi: check for posix_fallocate

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Some systems (like OS X) do not have posix_fallocate.  Add a configure
check for it before we try to use it.  This is less work than trying
to support old systems.

URL: http://sourceware.org/bugzilla/show_bug.cgi?id=13161
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
This commit is contained in:
Mike Frysinger 2011-11-07 16:28:52 +00:00
parent 481d79819e
commit a13852d936
5 changed files with 13 additions and 3 deletions
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7
sim/common/ChangeLog
View file

@ -1,3 +1,10 @@
2011-11-07 Mike Frysinger <vapier@gentoo.org>
PR sim/13161
* configure.ac (AC_CHECK_FUNCS): Add posix_fallocate.
* configure, config.in: Regenerate.
* dv-cfi.c (attach_cfi_regs): Check for HAVE_POSIX_FALLOCATE.
2011-10-19 Mike Frysinger <vapier@gentoo.org>
* acinclude.m4: Call AC_CHECK_LIB when $hardware contains cfi.

3
sim/common/config.in
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@ -43,6 +43,9 @@
/* Define to 1 if you have the `munmap' function. */
#undef HAVE_MUNMAP
/* Define to 1 if you have the `posix_fallocate' function. */
#undef HAVE_POSIX_FALLOCATE
/* Define to 1 if you have the `sigaction' function. */
#undef HAVE_SIGACTION

2
sim/common/configure vendored
View file

@ -4393,7 +4393,7 @@ fi
done
for ac_func in mmap munmap lstat truncate ftruncate
for ac_func in mmap munmap lstat truncate ftruncate posix_fallocate
do :
as_ac_var=`$as_echo "ac_cv_func_$ac_func" | $as_tr_sh`
ac_fn_c_check_func "$LINENO" "$ac_func" "$as_ac_var"

2
sim/common/configure.ac
View file

@ -34,7 +34,7 @@ AC_SUBST(TARGET_SUBDIR)
# These aren't all needed yet, but will be eventually.
AC_CHECK_HEADERS(stdlib.h string.h strings.h time.h sys/times.h sys/stat.h sys/mman.h)
AC_CHECK_FUNCS(mmap munmap lstat truncate ftruncate)
AC_CHECK_FUNCS(mmap munmap lstat truncate ftruncate posix_fallocate)
AC_CHECK_MEMBERS([[struct stat.st_dev], [struct stat.st_ino],
[struct stat.st_mode], [struct stat.st_nlink], [struct stat.st_uid],
[struct stat.st_gid], [struct stat.st_rdev], [struct stat.st_size],

2
sim/common/dv-cfi.c
View file

@ -727,7 +727,7 @@ attach_cfi_regs (struct hw *me, struct cfi *cfi)
/* Figure out where our initial flash data is coming from. */
if (fd != -1 && fd_writable)
{
#ifdef HAVE_MMAP
#if defined (HAVE_MMAP) && defined (HAVE_POSIX_FALLOCATE)
posix_fallocate (fd, 0, cfi->dev_size);
cfi->mmap = mmap (NULL, cfi->dev_size,