From: Valentine Barshak <vbarshak@ru.mvista.com>
Date: Sun, 8 Jan 2006 09:03:44 +0000 (-0800)
Subject: [PATCH] fadvise: return ESPIPE on FIFO/pipe
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=87ba81dba431232548ce29d5d224115d0c2355ac;p=GitHub%2FLineageOS%2Fandroid_kernel_samsung_universal7580.git

[PATCH] fadvise: return ESPIPE on FIFO/pipe

The patch makes posix_fadvise return ESPIPE on FIFO/pipe in order to be
fully POSIX-compliant.

Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

diff --git a/mm/fadvise.c b/mm/fadvise.c
index 5f19e87bc5a..d257c89e770 100644
--- a/mm/fadvise.c
+++ b/mm/fadvise.c
@@ -37,6 +37,11 @@ asmlinkage long sys_fadvise64_64(int fd, loff_t offset, loff_t len, int advice)
 	if (!file)
 		return -EBADF;
 
+	if (S_ISFIFO(file->f_dentry->d_inode->i_mode)) {
+		ret = -ESPIPE;
+		goto out;
+	}
+
 	mapping = file->f_mapping;
 	if (!mapping || len < 0) {
 		ret = -EINVAL;