From patchwork Tue Jan 8 23:00:07 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: [10/12] qemu-ga: guest_suspend(): improve error reporting Date: Tue, 08 Jan 2013 13:00:07 -0000 From: Michael Roth X-Patchwork-Id: 210576 Message-Id: <1357686009-13139-11-git-send-email-mdroth@linux.vnet.ibm.com> To: qemu-devel@nongnu.org Cc: aliguori@us.ibm.com, tomoki.sekiyama.qu@hitachi.com, lcapitulino@redhat.com From: Luiz Capitulino Most errors are QERR_UNDEFINED_ERROR today. Signed-off-by: Luiz Capitulino Reviewed-by: Michael Roth Signed-off-by: Michael Roth --- qga/commands-posix.c | 29 ++++++++++++++++++----------- 1 file changed, 18 insertions(+), 11 deletions(-) diff --git a/qga/commands-posix.c b/qga/commands-posix.c index f3ee492..614a421 100644 --- a/qga/commands-posix.c +++ b/qga/commands-posix.c @@ -702,8 +702,9 @@ out: static void guest_suspend(const char *pmutils_bin, const char *sysfile_str, Error **err) { + Error *local_err = NULL; char *pmutils_path; - pid_t rpid, pid; + pid_t pid; int status; pmutils_path = g_find_program_in_path(pmutils_bin); @@ -741,23 +742,29 @@ static void guest_suspend(const char *pmutils_bin, const char *sysfile_str, } _exit(EXIT_SUCCESS); + } else if (pid < 0) { + error_setg_errno(err, errno, "failed to create child process"); + goto out; } - g_free(pmutils_path); + ga_wait_child(pid, &status, &local_err); + if (error_is_set(&local_err)) { + error_propagate(err, local_err); + goto out; + } - if (pid < 0) { - goto exit_err; + if (!WIFEXITED(status)) { + error_setg(err, "child process has terminated abnormally"); + goto out; } - do { - rpid = waitpid(pid, &status, 0); - } while (rpid == -1 && errno == EINTR); - if (rpid == pid && WIFEXITED(status) && !WEXITSTATUS(status)) { - return; + if (WEXITSTATUS(status)) { + error_setg(err, "child process has failed to suspend"); + goto out; } -exit_err: - error_set(err, QERR_UNDEFINED_ERROR); +out: + g_free(pmutils_path); } void qmp_guest_suspend_disk(Error **err)