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Security: Add hook to calculate context based on a negative dentry.

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There is a time where we need to calculate a context without the
inode having been created yet. To do this we take the negative dentry and
calculate a context based on the process and the parent directory contexts.

Acked-by: Eric Paris <eparis@redhat.com>
Acked-by: James Morris <james.l.morris@oracle.com>
Signed-off-by: Matthew N. Dodd <Matthew.Dodd@sparta.com>
Signed-off-by: Miguel Rodel Felipe <Rodel_FM@dsi.a-star.edu.sg>
Signed-off-by: Phua Eu Gene <PHUA_Eu_Gene@dsi.a-star.edu.sg>
Signed-off-by: Khin Mi Mi Aung <Mi_Mi_AUNG@dsi.a-star.edu.sg>
Signed-off-by: Steve Dickson <steved@redhat.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
David Quigley
2013-05-22 12:50:34 -04:00
committed by Trond Myklebust
parent 4488cc96c5
commit d47be3dfec
4 changed files with 80 additions and 0 deletions
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8
security/capability.c
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@@ -109,6 +109,13 @@ static int cap_sb_parse_opts_str(char *options, struct security_mnt_opts *opts)
return 0;
}
static int cap_dentry_init_security(struct dentry *dentry, int mode,
struct qstr *name, void **ctx,
u32 *ctxlen)
{
return 0;
}
static int cap_inode_alloc_security(struct inode *inode)
{
return 0;
@@ -931,6 +938,7 @@ void __init security_fixup_ops(struct security_operations *ops)
set_to_cap_if_null(ops, sb_set_mnt_opts);
set_to_cap_if_null(ops, sb_clone_mnt_opts);
set_to_cap_if_null(ops, sb_parse_opts_str);
set_to_cap_if_null(ops, dentry_init_security);
set_to_cap_if_null(ops, inode_alloc_security);
set_to_cap_if_null(ops, inode_free_security);
set_to_cap_if_null(ops, inode_init_security);