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make prepend_name() work correctly when called with negative *buflen
[firefly-linux-kernel-4.4.55.git]
/
fs
/
open.c
diff --git
a/fs/open.c
b/fs/open.c
index 4b3e1edf2fe4d917e69e56b3e268e32f2ae7301a..b9ed8b25c108c69d68889b5b6eadac9878eb7bd9 100644
(file)
--- a/
fs/open.c
+++ b/
fs/open.c
@@
-705,6
+705,10
@@
static int do_dentry_open(struct file *f,
return 0;
}
+ /* POSIX.1-2008/SUSv4 Section XSI 2.9.7 */
+ if (S_ISREG(inode->i_mode))
+ f->f_mode |= FMODE_ATOMIC_POS;
+
f->f_op = fops_get(inode->i_fop);
if (unlikely(WARN_ON(!f->f_op))) {
error = -ENODEV;