diff options
Diffstat (limited to 'libtrivfs/io-restrict-auth.c')
| -rw-r--r-- | libtrivfs/io-restrict-auth.c | 30 |
1 files changed, 22 insertions, 8 deletions
diff --git a/libtrivfs/io-restrict-auth.c b/libtrivfs/io-restrict-auth.c index 2ecb0808..256c05f1 100644 --- a/libtrivfs/io-restrict-auth.c +++ b/libtrivfs/io-restrict-auth.c @@ -43,8 +43,9 @@ trivfs_S_io_restrict_auth (struct trivfs_protid *cred, uid_t *uids, u_int nuids, uid_t *gids, u_int ngids) { - struct trivfs_protid *newcred; int i; + error_t err = 0; + struct trivfs_protid *newcred; uid_t *newuids, *newgids; int newnuids, newngids; @@ -82,14 +83,27 @@ trivfs_S_io_restrict_auth (struct trivfs_protid *cred, newcred->nuids = newnuids; newcred->hook = cred->hook; - io_restrict_auth (cred->realnode, &newcred->realnode, - newuids, newnuids, newgids, newngids); - - if (trivfs_protid_create_hook) - (*trivfs_protid_create_hook) (newcred); + err = io_restrict_auth (cred->realnode, &newcred->realnode, + newuids, newnuids, newgids, newngids); + if (!err && trivfs_protid_create_hook) + { + err = (*trivfs_protid_create_hook) (newcred); + if (err) + mach_port_deallocate (mach_task_self (), newcred->realnode); + } - *newport = ports_get_right (newcred); - *newporttype = MACH_MSG_TYPE_MAKE_SEND; + if (err) + /* Signal that the user destroy hook shouldn't be called on NEWCRED. */ + newcred->realnode = MACH_PORT_NULL; + else + { + *newport = ports_get_right (newcred); + *newporttype = MACH_MSG_TYPE_MAKE_SEND; + } + + /* This will destroy NEWCRED if we got an error and didn't do the + ports_get_right above. */ ports_port_deref (newcred); + return 0; } |