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Update. 

* sysdeps/unix/sysv/linux/internal_statvfs.c (__internal_statvfs):
	Avoid infinite loops in case the mounts file is hosed.
	* io/Makefile: Add rules to build and run tst-statvfs.
	* io/tst-statvfs.c: New file.
This commit is contained in:
Ulrich Drepper 2003-10-27 04:05:04 +00:00
parent 5a4b5076f1
commit a14f121d3e
4 changed files with 46 additions and 5 deletions
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5
ChangeLog
View File

@ -1,5 +1,10 @@
2003-10-26 Ulrich Drepper <drepper@redhat.com>
* sysdeps/unix/sysv/linux/internal_statvfs.c (__internal_statvfs):
Avoid infinite loops in case the mounts file is hosed.
* io/Makefile: Add rules to build and run tst-statvfs.
* io/tst-statvfs.c: New file.
* include/dlfcn.h (__RTLD_OPENEXEC): Define.
* elf/dl-load.c (_dl_map_object_from_fd): Don't allow loading
executables unless __RTLD_OPENEXEC flag is present.

4
io/Makefile
View File

@ -57,7 +57,7 @@ static-only-routines = stat fstat lstat mknod stat64 fstat64 lstat64
others := pwd
test-srcs := ftwtest
tests := test-utime test-stat test-stat2 test-lfs tst-getcwd \
tst-fcntl bug-ftw1 bug-ftw2 bug-ftw3
tst-fcntl bug-ftw1 bug-ftw2 bug-ftw3 tst-statvfs
distribute := ftwtest-sh
@ -92,6 +92,8 @@ endif
test-stat2-ARGS = Makefile . $(objpfx)test-stat2
tst-statvfs-ARGS = $(objpfx)tst-statvfs tst-statvfs.c /tmp
ifeq ($(cross-compiling),no)
tests: $(objpfx)ftwtest.out

30
io/tst-statvfs.c Normal file
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@ -0,0 +1,30 @@
#include <stdio.h>
#include <sys/statvfs.h>
/* This test cannot detect many errors. But it will fail if the
statvfs is completely hosed and it'll detect a missing export. So
it is better than nothing. */
static int
do_test (int argc, char *argv[])
{
for (int i = 1; i < argc; ++i)
{
struct statvfs st;
if (statvfs (argv[i], &st) != 0)
printf ("%s: failed (%m)\n", argv[i]);
else
printf ("%s: free: %llu, mandatory: %s\n", argv[i],
(unsigned long long int) st.f_bfree,
#ifdef ST_MANDLOCK
(st.f_flag & ST_MANDLOCK) ? "yes" : "no"
#else
"no"
#endif
);
}
return 0;
}
#define TEST_FUNCTION do_test (argc, argv)
#include "../test-skeleton.c"

12
sysdeps/unix/sysv/linux/internal_statvfs.c
View File

@ -17,6 +17,7 @@
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <assert.h>
#include <errno.h>
#include <mntent.h>
#include <paths.h>
@ -167,14 +168,17 @@ __internal_statvfs (const char *name, struct statvfs *buf,
statvfs call got a name which was not the mount point.
Check again, this time without checking for name matches
first. */
if (! success)
if (! success && (name != NULL || fsname != NULL))
{
if (name != NULL)
/* Try without a mount point name. */
name = NULL;
else if (fsname != NULL)
/* Try without a filesystem name. */
fsname = fsname2 = NULL;
else
{
/* Try without a filesystem name. */
assert (fsname != NULL);
fsname = fsname2 = NULL;
}
/* It is not strictly allowed to use rewind here. But
this code is part of the implementation so it is