#include <sys/stat.h>
#include <sys/socket.h>
#include <arpa/inet.h>
+#include <sys/fsuid.h>
#include <stdio.h>
#include <stdlib.h>
* with an index into pollarray[], and other basic data about that client.
*
* Directory structure: created by the kernel nfs client
- * /pipefsdir/clntXX : one per rpc_clnt struct in the kernel
- * /pipefsdir/clntXX/krb5 : read uid for which kernel wants
- * a context, write the resulting context
- * /pipefsdir/clntXX/info : stores info such as server name
+ * {pipefs_nfsdir}/clntXX : one per rpc_clnt struct in the kernel
+ * {pipefs_nfsdir}/clntXX/krb5 : read uid for which kernel wants
+ * a context, write the resulting context
+ * {pipefs_nfsdir}/clntXX/info : stores info such as server name
*
* Algorithm:
- * Poll all /pipefsdir/clntXX/krb5 files. When ready, data read
+ * Poll all {pipefs_nfsdir}/clntXX/krb5 files. When ready, data read
* is a uid; performs rpcsec_gss context initialization protocol to
* get a cred for that user. Writes result to corresponding krb5 file
* in a form the kernel code will understand.
* In addition, we make sure we are notified whenever anything is
- * created or destroyed in pipefsdir/ or in an of the clntXX directories,
- * and rescan the whole pipefsdir when this happens.
+ * created or destroyed in {pipefs_nfsdir} or in an of the clntXX directories,
+ * and rescan the whole {pipefs_nfsdir} when this happens.
*/
struct pollfd * pollarray;
struct dirent **namelist;
int i, j;
- if (chdir(pipefsdir) < 0) {
+ if (chdir(pipefs_nfsdir) < 0) {
printerr(0, "ERROR: can't chdir to %s: %s\n",
- pipefsdir, strerror(errno));
+ pipefs_nfsdir, strerror(errno));
return -1;
}
- j = scandir(pipefsdir, &namelist, NULL, alphasort);
+ j = scandir(pipefs_nfsdir, &namelist, NULL, alphasort);
if (j < 0) {
printerr(0, "ERROR: can't scandir %s: %s\n",
- pipefsdir, strerror(errno));
+ pipefs_nfsdir, strerror(errno));
return -1;
}
update_old_clients(namelist, j);
ai_hints.ai_protocol = IPPROTO_UDP;
} else {
printerr(0, "WARNING: unrecognized protocol, '%s', requested "
- "for connection to server %s for user with uid %d",
+ "for connection to server %s for user with uid %d\n",
clp->protocol, clp->servername, uid);
goto out_fail;
}
/* extract the service name from clp->servicename */
if ((at_sign = strchr(clp->servicename, '@')) == NULL) {
printerr(0, "WARNING: servicename (%s) not formatted as "
- "expected with service@host", clp->servicename);
+ "expected with service@host\n", clp->servicename);
goto out_fail;
}
if ((at_sign - clp->servicename) >= sizeof(service)) {
printerr(0, "WARNING: service portion of servicename (%s) "
- "is too long!", clp->servicename);
+ "is too long!\n", clp->servicename);
goto out_fail;
}
strncpy(service, clp->servicename, at_sign - clp->servicename);
errcode = getaddrinfo(clp->servername, service, &ai_hints, &a);
if (errcode) {
printerr(0, "WARNING: Error from getaddrinfo for server "
- "'%s': %s", clp->servername, gai_strerror(errcode));
+ "'%s': %s\n", clp->servername, gai_strerror(errcode));
goto out_fail;
}
if (a == NULL) {
printerr(0, "WARNING: No address information found for "
- "connection to server %s for user with uid %d",
+ "connection to server %s for user with uid %d\n",
clp->servername, uid);
goto out_fail;
}
} else {
/* Shouldn't happen! */
printerr(0, "ERROR: requested protocol '%s', but "
- "got addrinfo with protocol %d",
+ "got addrinfo with protocol %d\n",
clp->protocol, a->ai_protocol);
goto out_fail;
}
gss_buffer_desc token;
char **credlist = NULL;
char **ccname;
+ int create_resp = -1;
printerr(1, "handling krb5 upcall\n");
goto out;
}
- if (uid == 0) {
- int success = 0;
-
- /*
- * Get a list of credential cache names and try each
- * of them until one works or we've tried them all
- */
- if (gssd_get_krb5_machine_cred_list(&credlist)) {
- printerr(0, "WARNING: Failed to obtain machine "
- "credentials for connection to "
- "server %s\n", clp->servername);
- goto out_return_error;
- }
- for (ccname = credlist; ccname && *ccname; ccname++) {
- gssd_setup_krb5_machine_gss_ccache(*ccname);
- if ((create_auth_rpc_client(clp, &rpc_clnt, &auth, uid,
- AUTHTYPE_KRB5)) == 0) {
- /* Success! */
- success++;
- break;
- }
- printerr(2, "WARNING: Failed to create krb5 context "
- "for user with uid %d with credentials "
- "cache %s for server %s\n",
- uid, *ccname, clp->servername);
- }
- gssd_free_krb5_machine_cred_list(credlist);
- if (!success) {
- printerr(0, "WARNING: Failed to create krb5 context "
- "for user with uid %d with any "
- "credentials cache for server %s\n",
- uid, clp->servername);
- goto out_return_error;
- }
- }
- else {
+ if (uid != 0 || (uid == 0 && root_uses_machine_creds == 0)) {
/* Tell krb5 gss which credentials cache to use */
gssd_setup_krb5_user_gss_ccache(uid, clp->servername);
- if ((create_auth_rpc_client(clp, &rpc_clnt, &auth, uid,
- AUTHTYPE_KRB5)) != 0) {
+ create_resp = create_auth_rpc_client(clp, &rpc_clnt, &auth, uid,
+ AUTHTYPE_KRB5);
+ }
+ if (create_resp != 0) {
+ if (uid == 0 && root_uses_machine_creds == 1) {
+ int success = 0;
+
+ /*
+ * Get a list of credential cache names and try each
+ * of them until one works or we've tried them all
+ */
+ if (gssd_get_krb5_machine_cred_list(&credlist)) {
+ printerr(0, "WARNING: Failed to obtain machine "
+ "credentials for connection to "
+ "server %s\n", clp->servername);
+ goto out_return_error;
+ }
+ for (ccname = credlist; ccname && *ccname; ccname++) {
+ gssd_setup_krb5_machine_gss_ccache(*ccname);
+ if ((create_auth_rpc_client(clp, &rpc_clnt,
+ &auth, uid,
+ AUTHTYPE_KRB5)) == 0) {
+ /* Success! */
+ success++;
+ break;
+ }
+ printerr(2, "WARNING: Failed to create krb5 context "
+ "for user with uid %d with credentials "
+ "cache %s for server %s\n",
+ uid, *ccname, clp->servername);
+ }
+ gssd_free_krb5_machine_cred_list(credlist);
+ if (!success) {
+ printerr(0, "WARNING: Failed to create krb5 context "
+ "for user with uid %d with any "
+ "credentials cache for server %s\n",
+ uid, clp->servername);
+ goto out_return_error;
+ }
+ } else {
printerr(0, "WARNING: Failed to create krb5 context "
- "for user with uid %d for server %s\n",
+ "for user with uid %d for server %s\n",
uid, clp->servername);
goto out_return_error;
}
projects / nfs-utils.git / blobdiff