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pam_systemd: do no allocate the path of fixed length

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Zbigniew Jędrzejewski-Szmek 2019-01-10 09:53:34 +01:00
parent a1b939dfc7
commit 055c08ef67
1 changed files with 3 additions and 4 deletions
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7
src/login/pam_systemd.c
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@ -28,6 +28,7 @@
#include "path-util.h"
#include "process-util.h"
#include "socket-util.h"
#include "stdio-util.h"
#include "strv.h"
#include "terminal-util.h"
#include "util.h"
@ -414,11 +415,9 @@ _public_ PAM_EXTERN int pam_sm_open_session(
pam_get_item(handle, PAM_SERVICE, (const void**) &service);
if (streq_ptr(service, "systemd-user")) {
_cleanup_free_ char *rt = NULL;
if (asprintf(&rt, "/run/user/"UID_FMT, pw->pw_uid) < 0)
return PAM_BUF_ERR;
char rt[STRLEN("/run/user/") + DECIMAL_STR_MAX(uid_t)];
xsprintf(rt, "/run/user/"UID_FMT, pw->pw_uid);
if (validate_runtime_directory(handle, rt, pw->pw_uid)) {
r = pam_misc_setenv(handle, "XDG_RUNTIME_DIR", rt, 0);
if (r != PAM_SUCCESS) {