From a454e9c726630fe4811a1c93b2d88b0e77b3094f Mon Sep 17 00:00:00 2001

From: =?UTF-8?q?Zbigniew=20J=C4=99drzejewski-Szmek?= <zbyszek@in.waw.pl>

Date: Wed, 28 Aug 2013 08:01:30 -0400

Subject: [PATCH] execute: more debugging messages

---

 src/core/execute.c     | 35 +++++++++++++++++++++--------------

 src/login/pam-module.c |  3 ++-

 2 files changed, 23 insertions(+), 15 deletions(-)

diff --git a/src/core/execute.c b/src/core/execute.c

index a53ef48..981b9e4 100644

--- a/src/core/execute.c

+++ b/src/core/execute.c

@@ -317,12 +317,12 @@ static int setup_input(const ExecContext *context, int socket_fd, bool apply_tty

         case EXEC_INPUT_TTY_FAIL: {

                 int fd, r;

-                if ((fd = acquire_terminal(

-                                     tty_path(context),

-                                     i == EXEC_INPUT_TTY_FAIL,

-                                     i == EXEC_INPUT_TTY_FORCE,

-                                     false,

-                                     (usec_t) -1)) < 0)

+                fd = acquire_terminal(tty_path(context),

+                                      i == EXEC_INPUT_TTY_FAIL,

+                                      i == EXEC_INPUT_TTY_FORCE,

+                                      false,

+                                      (usec_t) -1);

+                if (fd < 0)

                         return fd;

                 if (fd != STDIN_FILENO) {

@@ -748,6 +748,7 @@ static int setup_pam(

         char **e = NULL;

         bool close_session = false;

         pid_t pam_pid = 0, parent_pid;

+        int flags = 0;

         assert(name);

         assert(user);

@@ -760,6 +761,9 @@ static int setup_pam(

          * daemon. We do things this way to ensure that the main PID

          * of the daemon is the one we initially fork()ed. */

+        if (log_get_max_level() < LOG_PRI(LOG_DEBUG))

+                flags |= PAM_SILENT;

+

         pam_code = pam_start(name, user, &conv, &handle);

         if (pam_code != PAM_SUCCESS) {

                 handle = NULL;

@@ -772,11 +776,11 @@ static int setup_pam(

                         goto fail;

         }

-        pam_code = pam_acct_mgmt(handle, PAM_SILENT);

+        pam_code = pam_acct_mgmt(handle, flags);

         if (pam_code != PAM_SUCCESS)

                 goto fail;

-        pam_code = pam_open_session(handle, PAM_SILENT);

+        pam_code = pam_open_session(handle, flags);

         if (pam_code != PAM_SUCCESS)

                 goto fail;

@@ -850,7 +854,7 @@ static int setup_pam(

                 /* If our parent died we'll end the session */

                 if (getppid() != parent_pid) {

-                        pam_code = pam_close_session(handle, PAM_DATA_SILENT);

+                        pam_code = pam_close_session(handle, flags);

                         if (pam_code != PAM_SUCCESS)

                                 goto child_finish;

                 }

@@ -858,7 +862,7 @@ static int setup_pam(

                 r = 0;

         child_finish:

-                pam_end(handle, pam_code | PAM_DATA_SILENT);

+                pam_end(handle, pam_code | flags);

                 _exit(r);

         }

@@ -880,16 +884,19 @@ static int setup_pam(

         return 0;

 fail:

-        if (pam_code != PAM_SUCCESS)

+        if (pam_code != PAM_SUCCESS) {

+                log_error("PAM failed: %s", pam_strerror(handle, pam_code));

                 err = -EPERM;  /* PAM errors do not map to errno */

-        else

+        } else {

+                log_error("PAM failed: %m");

                 err = -errno;

+        }

         if (handle) {

                 if (close_session)

-                        pam_code = pam_close_session(handle, PAM_DATA_SILENT);

+                        pam_code = pam_close_session(handle, flags);

-                pam_end(handle, pam_code | PAM_DATA_SILENT);

+                pam_end(handle, pam_code | flags);

         }

         strv_free(e);

diff --git a/src/login/pam-module.c b/src/login/pam-module.c

index 49296b5..973daf7 100644

--- a/src/login/pam-module.c

+++ b/src/login/pam-module.c

@@ -199,7 +199,8 @@ _public_ PAM_EXTERN int pam_sm_open_session(

         dbus_error_init(&error);

-        /* pam_syslog(handle, LOG_INFO, "pam-systemd initializing"); */

+        if (debug)

+                pam_syslog(handle, LOG_INFO, "pam-systemd initializing");

         /* Make this a NOP on non-logind systems */

         if (!logind_running())