From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([208.118.235.92]:37996) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1TJQ5A-00054V-Rb for qemu-devel@nongnu.org; Wed, 03 Oct 2012 10:37:58 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1TJQ54-0000KV-HN for qemu-devel@nongnu.org; Wed, 03 Oct 2012 10:37:52 -0400 Received: from mail-pb0-f45.google.com ([209.85.160.45]:39719) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1TJQ54-0000Cn-B5 for qemu-devel@nongnu.org; Wed, 03 Oct 2012 10:37:46 -0400 Received: by mail-pb0-f45.google.com with SMTP id rp2so10061642pbb.4 for ; Wed, 03 Oct 2012 07:37:45 -0700 (PDT) Sender: Paolo Bonzini From: Paolo Bonzini Date: Wed, 3 Oct 2012 16:36:56 +0200 Message-Id: <1349275025-5093-10-git-send-email-pbonzini@redhat.com> In-Reply-To: <1349275025-5093-1-git-send-email-pbonzini@redhat.com> References: <1349275025-5093-1-git-send-email-pbonzini@redhat.com> Subject: [Qemu-devel] [PATCH 09/18] migration (incoming): add error propagation for fd and exec protocols List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: lcapitulino@redhat.com And remove the superfluous integer return value. Signed-off-by: Paolo Bonzini --- migration-exec.c | 8 +++----- migration-fd.c | 8 +++----- migration-tcp.c | 7 ++----- migration-unix.c | 5 ++--- migration.c | 15 ++++++--------- migration.h | 10 +++++----- vl.c | 16 ++++++---------- 7 file modificati, 27 inserzioni(+), 42 rimozioni(-) diff --git a/migration-exec.c b/migration-exec.c index f3baf85..232be6b 100644 --- a/migration-exec.c +++ b/migration-exec.c @@ -100,19 +100,17 @@ static void exec_accept_incoming_migration(void *opaque) qemu_fclose(f); } -int exec_start_incoming_migration(const char *command) +void exec_start_incoming_migration(const char *command, Error **errp) { QEMUFile *f; DPRINTF("Attempting to start an incoming migration\n"); f = qemu_popen_cmd(command, "r"); if(f == NULL) { - DPRINTF("Unable to apply qemu wrapper to popen file\n"); - return -errno; + error_setg_errno(errp, errno, "failed to popen the migration source"); + return; } qemu_set_fd_handler2(qemu_stdio_fd(f), NULL, exec_accept_incoming_migration, NULL, f); - - return 0; } diff --git a/migration-fd.c b/migration-fd.c index 938a109..24eedd5 100644 --- a/migration-fd.c +++ b/migration-fd.c @@ -105,7 +105,7 @@ static void fd_accept_incoming_migration(void *opaque) qemu_fclose(f); } -int fd_start_incoming_migration(const char *infd) +void fd_start_incoming_migration(const char *infd, Error **errp) { int fd; QEMUFile *f; @@ -115,11 +115,9 @@ int fd_start_incoming_migration(const char *infd) fd = strtol(infd, NULL, 0); f = qemu_fdopen(fd, "rb"); if(f == NULL) { - DPRINTF("Unable to apply qemu wrapper to file descriptor\n"); - return -errno; + error_setg_errno(errp, errno, "failed to open the source descriptor"); + return; } qemu_set_fd_handler2(fd, NULL, fd_accept_incoming_migration, NULL, f); - - return 0; } diff --git a/migration-tcp.c b/migration-tcp.c index 5e54e68..46f6ac5 100644 --- a/migration-tcp.c +++ b/migration-tcp.c @@ -111,18 +111,15 @@ out2: close(s); } -int tcp_start_incoming_migration(const char *host_port, Error **errp) +void tcp_start_incoming_migration(const char *host_port, Error **errp) { int s; s = inet_listen(host_port, NULL, 256, SOCK_STREAM, 0, errp); - if (s < 0) { - return -1; + return; } qemu_set_fd_handler2(s, NULL, tcp_accept_incoming_migration, NULL, (void *)(intptr_t)s); - - return 0; } diff --git a/migration-unix.c b/migration-unix.c index 34a413a..ed3db3a 100644 --- a/migration-unix.c +++ b/migration-unix.c @@ -111,16 +111,15 @@ out2: close(s); } -int unix_start_incoming_migration(const char *path, Error **errp) +void unix_start_incoming_migration(const char *path, Error **errp) { int s; s = unix_listen(path, NULL, 0, errp); if (s < 0) { - return -1; + return; } qemu_set_fd_handler2(s, NULL, unix_accept_incoming_migration, NULL, (void *)(intptr_t)s); - return 0; } diff --git a/migration.c b/migration.c index f7f0138..2802918 100644 --- a/migration.c +++ b/migration.c @@ -64,26 +64,23 @@ static MigrationState *migrate_get_current(void) return ¤t_migration; } -int qemu_start_incoming_migration(const char *uri, Error **errp) +void qemu_start_incoming_migration(const char *uri, Error **errp) { const char *p; - int ret; if (strstart(uri, "tcp:", &p)) - ret = tcp_start_incoming_migration(p, errp); + tcp_start_incoming_migration(p, errp); #if !defined(WIN32) else if (strstart(uri, "exec:", &p)) - ret = exec_start_incoming_migration(p); + exec_start_incoming_migration(p, errp); else if (strstart(uri, "unix:", &p)) - ret = unix_start_incoming_migration(p, errp); + unix_start_incoming_migration(p, errp); else if (strstart(uri, "fd:", &p)) - ret = fd_start_incoming_migration(p); + fd_start_incoming_migration(p, errp); #endif else { - fprintf(stderr, "unknown migration protocol: %s\n", uri); - ret = -EPROTONOSUPPORT; + error_setg(errp, "unknown migration protocol: %s\n", uri); } - return ret; } void process_incoming_migration(QEMUFile *f) diff --git a/migration.h b/migration.h index 275d2d8..aa44e1b 100644 --- a/migration.h +++ b/migration.h @@ -46,7 +46,7 @@ struct MigrationState void process_incoming_migration(QEMUFile *f); -int qemu_start_incoming_migration(const char *uri, Error **errp); +void qemu_start_incoming_migration(const char *uri, Error **errp); uint64_t migrate_max_downtime(void); @@ -54,19 +54,19 @@ void do_info_migrate_print(Monitor *mon, const QObject *data); void do_info_migrate(Monitor *mon, QObject **ret_data); -int exec_start_incoming_migration(const char *host_port); +void exec_start_incoming_migration(const char *host_port, Error **errp); void exec_start_outgoing_migration(MigrationState *s, const char *host_port, Error **errp); -int tcp_start_incoming_migration(const char *host_port, Error **errp); +void tcp_start_incoming_migration(const char *host_port, Error **errp); void tcp_start_outgoing_migration(MigrationState *s, const char *host_port, Error **errp); -int unix_start_incoming_migration(const char *path, Error **errp); +void unix_start_incoming_migration(const char *path, Error **errp); void unix_start_outgoing_migration(MigrationState *s, const char *path, Error **errp); -int fd_start_incoming_migration(const char *path); +void fd_start_incoming_migration(const char *path, Error **errp); void fd_start_outgoing_migration(MigrationState *s, const char *fdname, Error **errp); diff --git a/vl.c b/vl.c index 8d305ca..53917c9 100644 --- a/vl.c +++ b/vl.c @@ -3747,16 +3747,12 @@ int main(int argc, char **argv, char **envp) } if (incoming) { - Error *errp = NULL; - int ret = qemu_start_incoming_migration(incoming, &errp); - if (ret < 0) { - if (error_is_set(&errp)) { - fprintf(stderr, "Migrate: %s\n", error_get_pretty(errp)); - error_free(errp); - } - fprintf(stderr, "Migration failed. Exit code %s(%d), exiting.\n", - incoming, ret); - exit(ret); + Error *local_err = NULL; + qemu_start_incoming_migration(incoming, &local_err); + if (local_err) { + fprintf(stderr, "-incoming %s: %s\n", incoming, error_get_pretty(local_err)); + error_free(local_err); + exit(1); } } else if (autostart) { vm_start(); -- 1.7.12.1