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Diffstat (limited to 'sysdeps/unix/opendir.c')
-rw-r--r--sysdeps/unix/opendir.c19
1 files changed, 11 insertions, 8 deletions
diff --git a/sysdeps/unix/opendir.c b/sysdeps/unix/opendir.c
index ef7bc84866..4df06ed7b8 100644
--- a/sysdeps/unix/opendir.c
+++ b/sysdeps/unix/opendir.c
@@ -47,6 +47,17 @@ __opendir (const char *name)
return NULL;
}
+ /* We first have to check whether the name is for a directory. We
+ cannot do this after the open() call since the open/close operation
+ performed on, say, a tape device might have undesirable effects. */
+ if (stat (name, &statbuf) < 0)
+ return NULL;
+ if (! S_ISDIR (statbuf.st_mode))
+ {
+ __set_errno (ENOTDIR);
+ return NULL;
+ }
+
fd = __open (name, O_RDONLY|O_NDELAY);
if (fd < 0)
return NULL;
@@ -54,14 +65,6 @@ __opendir (const char *name)
if (__fcntl (fd, F_SETFD, FD_CLOEXEC) < 0)
goto lose;
- if (fstat (fd, &statbuf) < 0)
- goto lose;
- if (! S_ISDIR (statbuf.st_mode))
- {
- save_errno = ENOTDIR;
- goto lose2;
- }
-
#ifdef _STATBUF_ST_BLKSIZE
if (statbuf.st_blksize < sizeof (struct dirent))
allocation = sizeof (struct dirent);