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authorUlrich Drepper <drepper@redhat.com>2004-09-26 13:39:25 +0000
committerUlrich Drepper <drepper@redhat.com>2004-09-26 13:39:25 +0000
commit625ef999a6354d9c024e886919830dfda7569f44 (patch)
treea62b16835f070d7bd98700caf8f2e01b07785d21 /elf
parent610e3e7f859b3e07dff91063ecbbdbb2f34ef4e7 (diff)
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[BZ #151]
Update.
	* elf/readlib.c (process_file): Before complaining about too-short
	file, check that it potentially be an ELF file.  Also complain about
	empty files.  [BZ #151].
Diffstat (limited to 'elf')
-rw-r--r--elf/readlib.c10
1 files changed, 9 insertions, 1 deletions
diff --git a/elf/readlib.c b/elf/readlib.c
index a1fec94589..4fbc3e5e4c 100644
--- a/elf/readlib.c
+++ b/elf/readlib.c
@@ -105,7 +105,15 @@ process_file (const char *real_file_name, const char *file_name,
   if ((size_t) statbuf.st_size < sizeof (struct exec)
       || (size_t) statbuf.st_size < sizeof (ElfW(Ehdr)))
     {
-      error (0, 0, _("File %s is too small, not checked."), file_name);
+      if (statbuf.st_size == 0)
+	error (0, 0, _("File %s is empty, not checked."), file_name);
+      else
+	{
+	  char buf[SELFMAG];
+	  size_t n = MIN (statbuf.st_size, SELFMAG);
+	  if (fread (buf, n, 1, file) == 1 && memcmp (buf, ELFMAG, n) == 0)
+	    error (0, 0, _("File %s is too small, not checked."), file_name);
+	}
       fclose (file);
       return 1;
     }