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HDFS-13322 fuse dfs - uid persists when switching between ticket caches. Contributed by Istvan Fajth.

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This commit is contained in:
Aaron Fabbri 2018-07-31 15:21:38 -07:00
parent c835fc08ad
commit 40f9b0c5c1
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GPG Key ID: B2EEFA9E78118A29
1 changed files with 13 additions and 4 deletions
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17
hadoop-hdfs-project/hadoop-hdfs-native-client/src/main/native/fuse-dfs/fuse_connect.c
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@ -192,7 +192,7 @@ int fuseConnectInit(const char *nnUri, int port)
}
/**
* Compare two libhdfs connections by username
* Compare two libhdfs connections by username and Kerberos ticket cache path
*
* @param a The first libhdfs connection
* @param b The second libhdfs connection
@ -201,22 +201,26 @@ int fuseConnectInit(const char *nnUri, int port)
*/
static int hdfsConnCompare(const struct hdfsConn *a, const struct hdfsConn *b)
{
return strcmp(a->usrname, b->usrname);
int rc = strcmp(a->usrname, b->usrname);
if (rc) return rc;
return gHdfsAuthConf == AUTH_CONF_KERBEROS && strcmp(a->kpath, b->kpath);
}
/**
* Find a libhdfs connection by username
*
* @param usrname The username to look up
* @param kpath The Kerberos ticket cache file path
*
* @return The connection, or NULL if none could be found
*/
static struct hdfsConn* hdfsConnFind(const char *usrname)
static struct hdfsConn* hdfsConnFind(const char *usrname, const char *kpath)
{
struct hdfsConn exemplar;
memset(&exemplar, 0, sizeof(exemplar));
exemplar.usrname = (char*)usrname;
exemplar.kpath = (char*)kpath;
return RB_FIND(hdfsConnTree, &gConnTree, &exemplar);
}
@ -542,8 +546,13 @@ static int fuseConnect(const char *usrname, struct fuse_context *ctx,
int ret;
struct hdfsConn* conn;
char kpath[PATH_MAX] = { 0 };
if (gHdfsAuthConf == AUTH_CONF_KERBEROS) {
findKerbTicketCachePath(ctx, kpath, sizeof(kpath));
}
pthread_mutex_lock(&gConnMutex);
conn = hdfsConnFind(usrname);
conn = hdfsConnFind(usrname, kpath);
if (!conn) {
ret = fuseNewConnect(usrname, ctx, &conn);
if (ret) {