Re: [libvirt] [PATCH 11/14] Add helper API for finding auth file path

On 2012年03月21日 01:33, Daniel P. Berrange wrote: >+int virAuthGetConfigFilePath(virConnectPtr conn, >+ char **path) >+{ >+ int ret = -1; >+ size_t i; >+ const char *authenv = getenv("LIBVIRT_AUTH_FILE"); >+ char *userdir = NULL; >+ >+ *path = NULL; >+ >+ VIR_DEBUG("Determining auth config file path"); >+ >+ if (authenv) { >+ VIR_DEBUG("Using path from env '%s'", authenv); >+ if (!(*path = strdup(authenv))) >+ goto no_memory; >+ return 0; >+ } >+ >+ for (i = 0 ; i< conn->uri->paramsCount ; i++) { >+ if (STREQ_NULLABLE(conn->uri->params[i].name, "authfile")&& >+ conn->uri->params[i].value) { >+ VIR_DEBUG("Using path from URI '%s'", >+ conn->uri->params[i].value); >+ if (!(*path = strdup(conn->uri->params[i].value))) >+ goto no_memory; >+ return 0; >+ } >+ } >+ >+ if (!(userdir = virGetUserDirectory(geteuid()))) >+ goto cleanup; >+ >+ if (virAsprintf(path, "%s/.libvirt/auth.conf", userdir)< 0) >+ goto no_memory; >+ >+ VIR_DEBUG("Checking for readability of '%s'", *path); >+ if (access(*path, R_OK) == 0) >+ goto done; >+ >+ VIR_FREE(*path); >+ >+ if (!(*path = strdup(SYSCONFDIR "/libvirt/auth.conf"))) >+ goto no_memory; >+ >+ VIR_DEBUG("Checking for readability of '%s'", *path); >+ if (access(*path, R_OK) == 0) >+ goto done; >+ >+ VIR_FREE(*path); *path will be NULL if the last choice of authfile (e.g. /etc/libvirt/auth.conf) is not readable, while the function will return 0.