[Xen-changelog] [xen master] xenstore: set correct error code when violating quota

[patchbot@xxxxxxx]

commit ec4abec2098ca59b2cb83b45843da21f65da79d7
Author:     Juergen Gross <jgross@xxxxxxxx>
AuthorDate: Mon Mar 20 09:00:20 2017 +0100
Commit:     Wei Liu <wei.liu2@xxxxxxxxxx>
CommitDate: Wed Mar 22 11:23:10 2017 +0000

    xenstore: set correct error code when violating quota
    
    When the number of permitted xenstore entries for a domain is being
    exceeded the operation trying to create a new entry is denied.
    Unfortunately errno isn't being set in this case so the error code
    returned to the client is undefined.
    
    Set errno to ENOSPC in this case.
    
    Signed-off-by: Juergen Gross <jgross@xxxxxxxx>
    Acked-by: Wei Liu <wei.liu2@xxxxxxxxxx>
---
 tools/xenstore/xenstored_core.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/tools/xenstore/xenstored_core.c b/tools/xenstore/xenstored_core.c
index 5c659d8..ed80345 100644
--- a/tools/xenstore/xenstored_core.c
+++ b/tools/xenstore/xenstored_core.c
@@ -937,8 +937,10 @@ static struct node *construct_node(struct connection 
*conn, const void *ctx,
        if (!parent)
                return NULL;
 
-       if (domain_entry(conn) >= quota_nb_entry_per_domain)
+       if (domain_entry(conn) >= quota_nb_entry_per_domain) {
+               errno = ENOSPC;
                return NULL;
+       }
 
        /* Add child to parent. */
        base = basename(name);
--
generated by git-patchbot for /home/xen/git/xen.git#master

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