From c76d0abd07a9c9cf72bbb5b641e1e97f92ea8f3e Mon Sep 17 00:00:00 2001 From: Dmitry Torokhov Date: Fri, 29 Apr 2005 01:22:00 -0500 Subject: [PATCH] sysfs: if show/store is missing return -EIO sysfs: if attribute does not implement show or store method read/write should return -EIO instead of 0 or -EINVAL. Signed-off-by: Dmitry Torokhov Signed-off-by: Greg Kroah-Hartman --- fs/sysfs/file.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'fs/sysfs/file.c') diff --git a/fs/sysfs/file.c b/fs/sysfs/file.c index 364208071e17..1481cae7d99a 100644 --- a/fs/sysfs/file.c +++ b/fs/sysfs/file.c @@ -23,7 +23,7 @@ subsys_attr_show(struct kobject * kobj, struct attribute * attr, char * page) { struct subsystem * s = to_subsys(kobj); struct subsys_attribute * sattr = to_sattr(attr); - ssize_t ret = 0; + ssize_t ret = -EIO; if (sattr->show) ret = sattr->show(s,page); @@ -36,7 +36,7 @@ subsys_attr_store(struct kobject * kobj, struct attribute * attr, { struct subsystem * s = to_subsys(kobj); struct subsys_attribute * sattr = to_sattr(attr); - ssize_t ret = 0; + ssize_t ret = -EIO; if (sattr->store) ret = sattr->store(s,page,count); -- cgit v1.2.3 From 9d9d27fb651a7c95a46f276bacb4329db47470a6 Mon Sep 17 00:00:00 2001 From: Jon Smirl Date: Tue, 14 Jun 2005 09:54:54 -0400 Subject: [PATCH] SYSFS: fix PAGE_SIZE check Without this change I can't set an attribute exactly PAGE_SIZE in length. There is no need for zero termination because the interface uses lengths. From: Jon Smirl Signed-off-by: Greg Kroah-Hartman --- fs/sysfs/file.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'fs/sysfs/file.c') diff --git a/fs/sysfs/file.c b/fs/sysfs/file.c index 1481cae7d99a..849aac115460 100644 --- a/fs/sysfs/file.c +++ b/fs/sysfs/file.c @@ -182,7 +182,7 @@ fill_write_buffer(struct sysfs_buffer * buffer, const char __user * buf, size_t return -ENOMEM; if (count >= PAGE_SIZE) - count = PAGE_SIZE - 1; + count = PAGE_SIZE; error = copy_from_user(buffer->page,buf,count); buffer->needs_read_fill = 1; return error ? -EFAULT : count; -- cgit v1.2.3