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authorStefan Hajnoczi <stefanha@redhat.com>2013-10-30 14:54:30 +0100
committerStefan Hajnoczi <stefanha@redhat.com>2013-11-07 13:53:31 +0100
commitec9c10d29c6bb5613a680af62f5825d3bb2d31d4 (patch)
tree33ed841f56b47e80e89545483890cff3c0bf5336 /blockdev.c
parentdb5dc557288fb1b7a17ffabe3b92f299fc2dc187 (diff)
blockdev: fix drive_init() opts and bs_opts leaks
These memory leaks also make drive_add if=none,id=drive0 without a file= option leak the options list. This keeps ID "drive0" around forever. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com>
Diffstat (limited to 'blockdev.c')
-rw-r--r--blockdev.c27
1 files changed, 15 insertions, 12 deletions
diff --git a/blockdev.c b/blockdev.c
index b260477f1b..86e6bffdc4 100644
--- a/blockdev.c
+++ b/blockdev.c
@@ -341,7 +341,7 @@ static DriveInfo *blockdev_init(QDict *bs_opts,
qemu_opts_absorb_qdict(opts, bs_opts, &error);
if (error_is_set(&error)) {
error_propagate(errp, error);
- return NULL;
+ goto early_err;
}
if (id) {
@@ -361,7 +361,7 @@ static DriveInfo *blockdev_init(QDict *bs_opts,
if ((buf = qemu_opt_get(opts, "discard")) != NULL) {
if (bdrv_parse_discard_flags(buf, &bdrv_flags) != 0) {
error_setg(errp, "invalid discard option");
- return NULL;
+ goto early_err;
}
}
@@ -383,7 +383,7 @@ static DriveInfo *blockdev_init(QDict *bs_opts,
/* this is the default */
} else {
error_setg(errp, "invalid aio option");
- return NULL;
+ goto early_err;
}
}
#endif
@@ -393,13 +393,13 @@ static DriveInfo *blockdev_init(QDict *bs_opts,
error_printf("Supported formats:");
bdrv_iterate_format(bdrv_format_print, NULL);
error_printf("\n");
- return NULL;
+ goto early_err;
}
drv = bdrv_find_format(buf);
if (!drv) {
error_setg(errp, "'%s' invalid format", buf);
- return NULL;
+ goto early_err;
}
}
@@ -435,20 +435,20 @@ static DriveInfo *blockdev_init(QDict *bs_opts,
if (!check_throttle_config(&cfg, &error)) {
error_propagate(errp, error);
- return NULL;
+ goto early_err;
}
on_write_error = BLOCKDEV_ON_ERROR_ENOSPC;
if ((buf = qemu_opt_get(opts, "werror")) != NULL) {
if (type != IF_IDE && type != IF_SCSI && type != IF_VIRTIO && type != IF_NONE) {
error_setg(errp, "werror is not supported by this bus type");
- return NULL;
+ goto early_err;
}
on_write_error = parse_block_error_action(buf, 0, &error);
if (error_is_set(&error)) {
error_propagate(errp, error);
- return NULL;
+ goto early_err;
}
}
@@ -456,13 +456,13 @@ static DriveInfo *blockdev_init(QDict *bs_opts,
if ((buf = qemu_opt_get(opts, "rerror")) != NULL) {
if (type != IF_IDE && type != IF_VIRTIO && type != IF_SCSI && type != IF_NONE) {
error_report("rerror is not supported by this bus type");
- return NULL;
+ goto early_err;
}
on_read_error = parse_block_error_action(buf, 1, &error);
if (error_is_set(&error)) {
error_propagate(errp, error);
- return NULL;
+ goto early_err;
}
}
@@ -491,6 +491,8 @@ static DriveInfo *blockdev_init(QDict *bs_opts,
if (has_driver_specific_opts) {
file = NULL;
} else {
+ QDECREF(bs_opts);
+ qemu_opts_del(opts);
return dinfo;
}
}
@@ -529,12 +531,13 @@ static DriveInfo *blockdev_init(QDict *bs_opts,
return dinfo;
err:
- qemu_opts_del(opts);
- QDECREF(bs_opts);
bdrv_unref(dinfo->bdrv);
g_free(dinfo->id);
QTAILQ_REMOVE(&drives, dinfo, next);
g_free(dinfo);
+early_err:
+ QDECREF(bs_opts);
+ qemu_opts_del(opts);
return NULL;
}