From: Matt Reimer <mreimer@sdgsystems.com>
Date: Wed, 30 May 2012 14:31:13 +0000 (-0400)
Subject: nanddump: make dumping read-only partitions work
X-Git-Tag: 1_21_0~133^2~1
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=6979325592dd421ae4b02817ac8ac9ba5f362382;p=oweals%2Fbusybox.git

nanddump: make dumping read-only partitions work

Make dumping read-only partitions work by opening the device
O_RDONLY; otherwise the open() will fail with -EPERM.

Signed-off-by: Matt Reimer <mreimer@sdgsystems.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
---

diff --git a/miscutils/nandwrite.c b/miscutils/nandwrite.c
index 2ba6e3fe5..c636a5aa2 100644
--- a/miscutils/nandwrite.c
+++ b/miscutils/nandwrite.c
@@ -129,7 +129,7 @@ int nandwrite_main(int argc UNUSED_PARAM, char **argv)
 		xmove_fd(tmp_fd, IS_NANDDUMP ? STDOUT_FILENO : STDIN_FILENO);
 	}
 
-	fd = xopen(argv[0], O_RDWR);
+	fd = xopen(argv[0], IS_NANDWRITE ? O_RDWR : O_RDONLY);
 	xioctl(fd, MEMGETINFO, &meminfo);
 
 	mtdoffset = xstrtou(opt_s, 0);