diff options
| -rw-r--r-- | blockdev.c | 51 |
1 files changed, 21 insertions, 30 deletions
diff --git a/blockdev.c b/blockdev.c index 699f312c9b..9c883ce73e 100644 --- a/blockdev.c +++ b/blockdev.c @@ -19,6 +19,23 @@ static QTAILQ_HEAD(drivelist, DriveInfo) drives = QTAILQ_HEAD_INITIALIZER(drives); +static const char *const if_name[IF_COUNT] = { + [IF_NONE] = "none", + [IF_IDE] = "ide", + [IF_SCSI] = "scsi", + [IF_FLOPPY] = "floppy", + [IF_PFLASH] = "pflash", + [IF_MTD] = "mtd", + [IF_SD] = "sd", + [IF_VIRTIO] = "virtio", + [IF_XEN] = "xen", +}; + +static const int if_max_devs[IF_COUNT] = { + [IF_IDE] = MAX_IDE_DEVS, + [IF_SCSI] = MAX_SCSI_DEVS, +}; + /* * We automatically delete the drive when a device using it gets * unplugged. Questionable feature, but we can't just drop it. @@ -173,11 +190,9 @@ DriveInfo *drive_init(QemuOpts *opts, int default_to_scsi, int *fatal_error) if (default_to_scsi) { type = IF_SCSI; - max_devs = MAX_SCSI_DEVS; pstrcpy(devname, sizeof(devname), "scsi"); } else { type = IF_IDE; - max_devs = MAX_IDE_DEVS; pstrcpy(devname, sizeof(devname), "ide"); } media = MEDIA_DISK; @@ -199,38 +214,14 @@ DriveInfo *drive_init(QemuOpts *opts, int default_to_scsi, int *fatal_error) if ((buf = qemu_opt_get(opts, "if")) != NULL) { pstrcpy(devname, sizeof(devname), buf); - if (!strcmp(buf, "ide")) { - type = IF_IDE; - max_devs = MAX_IDE_DEVS; - } else if (!strcmp(buf, "scsi")) { - type = IF_SCSI; - max_devs = MAX_SCSI_DEVS; - } else if (!strcmp(buf, "floppy")) { - type = IF_FLOPPY; - max_devs = 0; - } else if (!strcmp(buf, "pflash")) { - type = IF_PFLASH; - max_devs = 0; - } else if (!strcmp(buf, "mtd")) { - type = IF_MTD; - max_devs = 0; - } else if (!strcmp(buf, "sd")) { - type = IF_SD; - max_devs = 0; - } else if (!strcmp(buf, "virtio")) { - type = IF_VIRTIO; - max_devs = 0; - } else if (!strcmp(buf, "xen")) { - type = IF_XEN; - max_devs = 0; - } else if (!strcmp(buf, "none")) { - type = IF_NONE; - max_devs = 0; - } else { + for (type = 0; type < IF_COUNT && strcmp(buf, if_name[type]); type++) + ; + if (type == IF_COUNT) { error_report("unsupported bus type '%s'", buf); return NULL; } } + max_devs = if_max_devs[type]; if (cyls || heads || secs) { if (cyls < 1 || (type == IF_IDE && cyls > 16383)) { |