- The problem this is trying to solve can be seen for example thus:
$ eu-readelf -a /
eu-readelf: failed reading '/': (null)
With the fix we see a proper error number and get a reasonable error
message:
$ eu-readelf -a /
eu-readelf: failed reading '/': invalid file descriptor
Signed-off-by: Petr Machata <pmachata@redhat.com>
+2014-09-10 Petr Machata <pmachata@redhat.com>
+
+ * elf_begin (read_unmmaped_file): Call __libelf_seterrno if the
+ file is unreadable.
+
2014-07-07 Mark Wielaard <mjw@redhat.com>
* elf.h: Update from glibc.
maxsize),
offset);
if (unlikely (nread == -1))
- /* We cannot even read the head of the file. Maybe FILDES is associated
- with an unseekable device. This is nothing we can handle. */
- return NULL;
+ {
+ /* We cannot even read the head of the file. Maybe FILDES is associated
+ with an unseekable device. This is nothing we can handle. */
+ __libelf_seterrno (ELF_E_INVALID_FILE);
+ return NULL;
+ }
/* See what kind of object we have here. */
Elf_Kind kind = determine_kind (mem.header, nread);