From 82480db1c89f2ac291e44c74274bd0b6a860a720 Mon Sep 17 00:00:00 2001 From: Richard Jones <rjones@redhat.com> Date: Mon, 8 Jun 2015 11:56:59 +0200 Subject: [PATCH 06/30] block/ssh: Propagate errors to open and create methods Message-id: <1433764620-20506-6-git-send-email-rjones@redhat.com> Patchwork-id: 65482 O-Subject: [RHEL-7.2 qemu-kvm PATCH 5/6] block/ssh: Propagate errors to open and create methods Bugzilla: 1226683 RH-Acked-by: Miroslav Rezanina <mrezanin@redhat.com> RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com> RH-Acked-by: Laszlo Ersek <lersek@redhat.com> From: Markus Armbruster <armbru@redhat.com> Completes the conversion to Error started in commit 015a103^..d5124c0. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Richard W.M. Jones <rjones@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Upstream-status: 5496fb1aebb624b379a503a8b2a156922a275fa1 Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com> --- block/ssh.c | 47 ++++++++++++++++++++++------------------------- 1 file changed, 22 insertions(+), 25 deletions(-) diff --git a/block/ssh.c b/block/ssh.c index 07f8a2c..3b4d9e7 100644 --- a/block/ssh.c +++ b/block/ssh.c @@ -131,29 +131,34 @@ session_error_setg(Error **errp, BDRVSSHState *s, const char *fs, ...) g_free(msg); } -/* Wrappers around error_report which make sure to dump as much - * information from libssh2 as possible. - */ -static void GCC_FMT_ATTR(2, 3) -session_error_report(BDRVSSHState *s, const char *fs, ...) +static void GCC_FMT_ATTR(3, 4) +sftp_error_setg(Error **errp, BDRVSSHState *s, const char *fs, ...) { va_list args; + char *msg; va_start(args, fs); - error_vprintf(fs, args); + msg = g_strdup_vprintf(fs, args); + va_end(args); - if ((s)->session) { + if (s->sftp) { char *ssh_err; int ssh_err_code; + unsigned long sftp_err_code; /* This is not an errno. See <libssh2.h>. */ ssh_err_code = libssh2_session_last_error(s->session, &ssh_err, NULL, 0); - error_printf(": %s (libssh2 error code: %d)", ssh_err, ssh_err_code); - } + /* See <libssh2_sftp.h>. */ + sftp_err_code = libssh2_sftp_last_error((s)->sftp); - va_end(args); - error_printf("\n"); + error_setg(errp, + "%s: %s (libssh2 error code: %d, sftp error code: %lu)", + msg, ssh_err, ssh_err_code, sftp_err_code); + } else { + error_setg(errp, "%s", msg); + } + g_free(msg); } static void GCC_FMT_ATTR(2, 3) @@ -594,14 +599,14 @@ static int connect_to_ssh(BDRVSSHState *s, QDict *options, path, ssh_flags, creat_mode); s->sftp_handle = libssh2_sftp_open(s->sftp, path, ssh_flags, creat_mode); if (!s->sftp_handle) { - session_error_report(s, "failed to open remote file '%s'", path); + session_error_setg(errp, s, "failed to open remote file '%s'", path); ret = -EINVAL; goto err; } r = libssh2_sftp_fstat(s->sftp_handle, &s->attrs); if (r < 0) { - sftp_error_report(s, "failed to read file attributes"); + sftp_error_setg(errp, s, "failed to read file attributes"); return -EINVAL; } @@ -639,7 +644,6 @@ static int connect_to_ssh(BDRVSSHState *s, QDict *options, static int ssh_file_open(BlockDriverState *bs, QDict *options, int bdrv_flags, Error **errp) { - Error *local_err = NULL; BDRVSSHState *s = bs->opaque; int ret; int ssh_flags; @@ -652,10 +656,8 @@ static int ssh_file_open(BlockDriverState *bs, QDict *options, int bdrv_flags, } /* Start up SSH. */ - ret = connect_to_ssh(s, options, ssh_flags, 0, &local_err); + ret = connect_to_ssh(s, options, ssh_flags, 0, errp); if (ret < 0) { - qerror_report_err(local_err); - error_free(local_err); goto err; } @@ -686,7 +688,6 @@ static int ssh_create(const char *filename, QEMUOptionParameter *options, Error **errp) { int r, ret; - Error *local_err = NULL; int64_t total_size = 0; QDict *uri_options = NULL; BDRVSSHState s; @@ -705,10 +706,8 @@ static int ssh_create(const char *filename, QEMUOptionParameter *options, DPRINTF("total_size=%" PRIi64, total_size); uri_options = qdict_new(); - r = parse_uri(filename, uri_options, &local_err); + r = parse_uri(filename, uri_options, errp); if (r < 0) { - qerror_report_err(local_err); - error_free(local_err); ret = r; goto out; } @@ -716,10 +715,8 @@ static int ssh_create(const char *filename, QEMUOptionParameter *options, r = connect_to_ssh(&s, uri_options, LIBSSH2_FXF_READ|LIBSSH2_FXF_WRITE| LIBSSH2_FXF_CREAT|LIBSSH2_FXF_TRUNC, - 0644, &local_err); + 0644, errp); if (r < 0) { - qerror_report_err(local_err); - error_free(local_err); ret = r; goto out; } @@ -728,7 +725,7 @@ static int ssh_create(const char *filename, QEMUOptionParameter *options, libssh2_sftp_seek64(s.sftp_handle, total_size-1); r2 = libssh2_sftp_write(s.sftp_handle, c, 1); if (r2 < 0) { - sftp_error_report(&s, "truncate failed"); + sftp_error_setg(errp, &s, "truncate failed"); ret = -EINVAL; goto out; } -- 1.8.3.1