[syslinux] [PATCH] fs: fix call to fs_ops->readdir
Sebastian Herbszt
herbszt at gmx.de
Sun Mar 7 07:02:50 PST 2010
Check if fs_ops->readdir is available before calling it.
At least PXELINUX doesn't implement it.
Signed-off-by: Sebastian Herbszt <herbszt at gmx.de>
diff --git a/core/fs/readdir.c b/core/fs/readdir.c
index d2b112b..d20fc33 100644
--- a/core/fs/readdir.c
+++ b/core/fs/readdir.c
@@ -28,8 +28,11 @@ struct dirent *readdir(DIR *dir)
struct file *dd_dir = (struct file *)dir;
int rv = -1;
- if (dd_dir)
- rv = dd_dir->fs->fs_ops->readdir(dd_dir, &buf);
+ if (dd_dir) {
+ if (dd_dir->fs->fs_ops->readdir) {
+ rv = dd_dir->fs->fs_ops->readdir(dd_dir, &buf);
+ }
+ }
return rv < 0 ? NULL : &buf;
}
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