From ac10be41ad321752682f2549ebc42b2512012f60 Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Wed, 8 Feb 2012 13:26:21 -0800 Subject: libmtd_legacy: don't open device in R/W On legacy kernels with ROM devices, we can get mtdinfo errors like: libmtd: error!: cannot open "/dev/mtd4" error 13 (Permission denied) mtdinfo: error!: libmtd failed get MTD device 4 information error 13 (Permission denied) We don't need O_RDRW access for informational ioctls(), so make this O_RDONLY. Signed-off-by: Brian Norris Signed-off-by: Artem Bityutskiy --- lib/libmtd_legacy.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'lib') diff --git a/lib/libmtd_legacy.c b/lib/libmtd_legacy.c index d3f1672..1ae9946 100644 --- a/lib/libmtd_legacy.c +++ b/lib/libmtd_legacy.c @@ -262,7 +262,7 @@ int legacy_get_dev_info(const char *node, struct mtd_dev_info *mtd) mtd->mtd_num = mtd->minor / 2; - fd = open(node, O_RDWR); + fd = open(node, O_RDONLY); if (fd == -1) return sys_errmsg("cannot open \"%s\"", node); -- cgit v1.2.3