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From 4dad2c0644a22a935a87f86b4d63747a9598bb5d Mon Sep 17 00:00:00 2001
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From: Max Reitz <mreitz@redhat.com>
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Date: Mon, 18 Jun 2018 16:43:10 +0200
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Subject: [PATCH 42/54] qemu-io: Exit with error when a command failed
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RH-Author: Max Reitz <mreitz@redhat.com>
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Message-id: <20180618164312.24423-4-mreitz@redhat.com>
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Patchwork-id: 80780
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O-Subject: [RHV-7.6 qemu-kvm-rhev PATCH 3/5] qemu-io: Exit with error when a command failed
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Bugzilla: 1519617
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RH-Acked-by: John Snow <jsnow@redhat.com>
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RH-Acked-by: Kevin Wolf <kwolf@redhat.com>
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RH-Acked-by: Miroslav Rezanina <mrezanin@redhat.com>
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Currently, qemu-io basically always returns success when it gets to
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interactive mode (so once the whole command line has been parsed; even
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before the commands on the command line are interpreted). That is not
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very useful.
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This patch makes qemu-io return failure when any of the executed
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commands failed.
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Buglink: https://bugzilla.redhat.com/show_bug.cgi?id=1519617
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Signed-off-by: Max Reitz <mreitz@redhat.com>
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Reviewed-by: Eric Blake <eblake@redhat.com>
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Message-id: 20180509194302.21585-4-mreitz@redhat.com
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Signed-off-by: Max Reitz <mreitz@redhat.com>
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(cherry picked from commit 6b3aa8485ca8e61b168f51d465188855cf549bd2)
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Signed-off-by: Max Reitz <mreitz@redhat.com>
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Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
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---
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qemu-io.c | 28 ++++++++++++++++++++++------
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1 file changed, 22 insertions(+), 6 deletions(-)
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diff --git a/qemu-io.c b/qemu-io.c
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index ec66838..13829f5 100644
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--- a/qemu-io.c
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+++ b/qemu-io.c
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@@ -400,17 +400,21 @@ static void prep_fetchline(void *opaque)
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*fetchable= 1;
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}
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-static void command_loop(void)
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+static int command_loop(void)
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{
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int i, fetchable = 0, prompted = 0;
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+ int ret, last_error = 0;
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char *input;
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for (i = 0; !quit_qemu_io && i < ncmdline; i++) {
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- qemuio_command(qemuio_blk, cmdline[i]);
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+ ret = qemuio_command(qemuio_blk, cmdline[i]);
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+ if (ret < 0) {
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+ last_error = ret;
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+ }
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}
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if (cmdline) {
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g_free(cmdline);
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- return;
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+ return last_error;
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}
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while (!quit_qemu_io) {
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@@ -431,13 +435,19 @@ static void command_loop(void)
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if (input == NULL) {
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break;
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}
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- qemuio_command(qemuio_blk, input);
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+ ret = qemuio_command(qemuio_blk, input);
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g_free(input);
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+ if (ret < 0) {
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+ last_error = ret;
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+ }
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+
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prompted = 0;
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fetchable = 0;
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}
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qemu_set_fd_handler(STDIN_FILENO, NULL, NULL, NULL);
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+
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+ return last_error;
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}
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static void add_user_command(char *optarg)
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@@ -502,6 +512,7 @@ int main(int argc, char **argv)
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int c;
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int opt_index = 0;
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int flags = BDRV_O_UNMAP;
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+ int ret;
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bool writethrough = true;
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Error *local_error = NULL;
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QDict *opts = NULL;
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@@ -663,7 +674,7 @@ int main(int argc, char **argv)
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}
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}
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}
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- command_loop();
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+ ret = command_loop();
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/*
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* Make sure all outstanding requests complete before the program exits.
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@@ -672,5 +683,10 @@ int main(int argc, char **argv)
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blk_unref(qemuio_blk);
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g_free(readline_state);
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- return 0;
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+
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+ if (ret < 0) {
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+ return 1;
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+ } else {
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+ return 0;
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+ }
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}
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--
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1.8.3.1
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