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block: Error parameter for open functions

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Add an Error ** parameter to bdrv_open, bdrv_file_open and associated
functions to allow more specific error messages.

Signed-off-by: Max Reitz <mreitz@redhat.com>
This commit is contained in:
Max Reitz
2013-09-05 14:45:29 +02:00
committed by Kevin Wolf
parent d5124c00d8
commit 34b5d2c68e
17 changed files with 163 additions and 85 deletions
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14
qemu-io.c
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@@ -46,21 +46,27 @@ static const cmdinfo_t close_cmd = {
static int openfile(char *name, int flags, int growable)
{
Error *local_err = NULL;
if (qemuio_bs) {
fprintf(stderr, "file open already, try 'help close'\n");
return 1;
}
if (growable) {
if (bdrv_file_open(&qemuio_bs, name, NULL, flags)) {
fprintf(stderr, "%s: can't open device %s\n", progname, name);
if (bdrv_file_open(&qemuio_bs, name, NULL, flags, &local_err)) {
fprintf(stderr, "%s: can't open device %s: %s\n", progname, name,
error_get_pretty(local_err));
error_free(local_err);
return 1;
}
} else {
qemuio_bs = bdrv_new("hda");
if (bdrv_open(qemuio_bs, name, NULL, flags, NULL) < 0) {
fprintf(stderr, "%s: can't open device %s\n", progname, name);
if (bdrv_open(qemuio_bs, name, NULL, flags, NULL, &local_err) < 0) {
fprintf(stderr, "%s: can't open device %s: %s\n", progname, name,
error_get_pretty(local_err));
error_free(local_err);
bdrv_unref(qemuio_bs);
qemuio_bs = NULL;
return 1;