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block/ssh: Propagate errors through authenticate() 

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Richard W.M. Jones <rjones@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Markus Armbruster 2014-05-16 11:00:14 +02:00 committed by Stefan Hajnoczi
parent 01c2b265fc
commit 4618e658e6
1 changed files with 14 additions and 9 deletions
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23
block/ssh.c
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@ -434,7 +434,7 @@ static int check_host_key(BDRVSSHState *s, const char *host, int port,
return -EINVAL;
}
static int authenticate(BDRVSSHState *s, const char *user)
static int authenticate(BDRVSSHState *s, const char *user, Error **errp)
{
int r, ret;
const char *userauthlist;
@ -445,7 +445,8 @@ static int authenticate(BDRVSSHState *s, const char *user)
userauthlist = libssh2_userauth_list(s->session, user, strlen(user));
if (strstr(userauthlist, "publickey") == NULL) {
ret = -EPERM;
error_report("remote server does not support \"publickey\" authentication");
error_setg(errp,
"remote server does not support \"publickey\" authentication");
goto out;
}
@ -453,17 +454,18 @@ static int authenticate(BDRVSSHState *s, const char *user)
agent = libssh2_agent_init(s->session);
if (!agent) {
ret = -EINVAL;
session_error_report(s, "failed to initialize ssh-agent support");
session_error_setg(errp, s, "failed to initialize ssh-agent support");
goto out;
}
if (libssh2_agent_connect(agent)) {
ret = -ECONNREFUSED;
session_error_report(s, "failed to connect to ssh-agent");
session_error_setg(errp, s, "failed to connect to ssh-agent");
goto out;
}
if (libssh2_agent_list_identities(agent)) {
ret = -EINVAL;
session_error_report(s, "failed requesting identities from ssh-agent");
session_error_setg(errp, s,
"failed requesting identities from ssh-agent");
goto out;
}
@ -474,7 +476,8 @@ static int authenticate(BDRVSSHState *s, const char *user)
}
if (r < 0) {
ret = -EINVAL;
session_error_report(s, "failed to obtain identity from ssh-agent");
session_error_setg(errp, s,
"failed to obtain identity from ssh-agent");
goto out;
}
r = libssh2_agent_userauth(agent, user, identity);
@ -488,8 +491,8 @@ static int authenticate(BDRVSSHState *s, const char *user)
}
ret = -EPERM;
error_report("failed to authenticate using publickey authentication "
"and the identities held by your ssh-agent");
error_setg(errp, "failed to authenticate using publickey authentication "
"and the identities held by your ssh-agent");
out:
if (agent != NULL) {
@ -577,8 +580,10 @@ static int connect_to_ssh(BDRVSSHState *s, QDict *options,
}
/* Authenticate. */
ret = authenticate(s, user);
ret = authenticate(s, user, &err);
if (ret < 0) {
qerror_report_err(err);
error_free(err);
goto err;
}