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Subject[PATCH 14/13] sysfs: sysfs_setattr remove unnecessary permission check.
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inode_change_ok already clears the SGID bit when necessary so there is
no reason for sysfs_setattr to carry code to do the same, and it is
good to kill the extra copy because when I moved the code, I goofed
and in certain corner cases the code will look at the wrong gid.

Signed-off-by: Eric W. Biederman <ebiederm@aristanetworks.com>
---
fs/sysfs/inode.c | 4 ----
1 files changed, 0 insertions(+), 4 deletions(-)
diff --git a/fs/sysfs/inode.c b/fs/sysfs/inode.c
index 72e2e99..e2595a7 100644
--- a/fs/sysfs/inode.c
+++ b/fs/sysfs/inode.c
@@ -120,10 +120,6 @@ int sysfs_setattr(struct dentry * dentry, struct iattr * iattr)
return error;

iattr->ia_valid &= ~ATTR_SIZE; /* ignore size changes */
- if (iattr->ia_valid & ATTR_MODE) {
- if (!in_group_p(inode->i_gid) && !capable(CAP_FSETID))
- iattr->ia_mode &= ~S_ISGID;
- }

error = inode_setattr(inode, iattr);
if (error)
--
1.6.5.2.143.g8cc62


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