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kill drives_opt 

cleanup pretty simliar to the drives_table removal patch:
 - drop the table and make a linked list out of it.
 - pass around struct pointers instead of table indices.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Gerd Hoffmann 2009-07-22 16:42:59 +02:00 committed by Anthony Liguori
parent 1dae12e6d0
commit 3b0ba92793
3 changed files with 43 additions and 71 deletions
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10
hw/device-hotplug.c
View File

@ -30,17 +30,17 @@
DriveInfo *add_init_drive(const char *opts)
{
int drive_opt_idx;
int fatal_error;
DriveInfo *dinfo;
DriveOpt *dopt;
drive_opt_idx = drive_add(NULL, "%s", opts);
if (!drive_opt_idx)
dopt = drive_add(NULL, "%s", opts);
if (!dopt)
return NULL;
dinfo = drive_init(&drives_opt[drive_opt_idx], 0, current_machine, &fatal_error);
dinfo = drive_init(dopt, 0, current_machine, &fatal_error);
if (!dinfo) {
drive_remove(drive_opt_idx);
drive_remove(dopt);
return NULL;
}

24
sysemu.h
View File

@ -159,6 +159,12 @@ typedef enum {
#define BLOCK_SERIAL_STRLEN 20
typedef struct DriveOpt {
const char *file;
char opt[1024];
TAILQ_ENTRY(DriveOpt) next;
} DriveOpt;
typedef struct DriveInfo {
BlockDriverState *bdrv;
char *id;
@ -166,7 +172,7 @@ typedef struct DriveInfo {
BlockInterfaceType type;
int bus;
int unit;
int drive_opt_idx;
DriveOpt *opt;
BlockInterfaceErrorAction onerror;
char serial[BLOCK_SERIAL_STRLEN + 1];
TAILQ_ENTRY(DriveInfo) next;
@ -177,28 +183,20 @@ typedef struct DriveInfo {
#define MAX_DRIVES 32
extern TAILQ_HEAD(drivelist, DriveInfo) drives;
extern TAILQ_HEAD(driveoptlist, DriveOpt) driveopts;
extern DriveInfo *drive_get(BlockInterfaceType type, int bus, int unit);
extern DriveInfo *drive_get_by_id(char *id);
extern int drive_get_max_bus(BlockInterfaceType type);
extern void drive_uninit(BlockDriverState *bdrv);
extern void drive_remove(int index);
extern void drive_remove(DriveOpt *opt);
extern const char *drive_get_serial(BlockDriverState *bdrv);
extern BlockInterfaceErrorAction drive_get_onerror(BlockDriverState *bdrv);
BlockDriverState *qdev_init_bdrv(DeviceState *dev, BlockInterfaceType type);
struct drive_opt {
const char *file;
char opt[1024];
int used;
};
extern struct drive_opt drives_opt[MAX_DRIVES];
extern int nb_drives_opt;
extern int drive_add(const char *file, const char *fmt, ...);
extern DriveInfo *drive_init(struct drive_opt *arg, int snapshot, void *machine,
extern DriveOpt *drive_add(const char *file, const char *fmt, ...);
extern DriveInfo *drive_init(DriveOpt *arg, int snapshot, void *machine,
int *fatal_error);
/* acpi */

80
vl.c
View File

@ -181,6 +181,7 @@ const char *bios_name = NULL;
/* Note: drives_table[MAX_DRIVES] is a dummy block driver if none available
to store the VM snapshots */
struct drivelist drives = TAILQ_HEAD_INITIALIZER(drives);
struct driveoptlist driveopts = TAILQ_HEAD_INITIALIZER(driveopts);
enum vga_retrace_method vga_retrace_method = VGA_RETRACE_DUMB;
static DisplayState *display_state;
DisplayType display_type = DT_DEFAULT;
@ -248,8 +249,6 @@ int alt_grab = 0;
unsigned int nb_prom_envs = 0;
const char *prom_envs[MAX_PROM_ENVS];
#endif
int nb_drives_opt;
struct drive_opt drives_opt[MAX_DRIVES];
int boot_menu;
int nb_numa_nodes;
@ -1865,43 +1864,27 @@ static int bt_parse(const char *opt)
#define MTD_ALIAS "if=mtd"
#define SD_ALIAS "index=0,if=sd"
static int drive_opt_get_free_idx(void)
{
int index;
for (index = 0; index < MAX_DRIVES; index++)
if (!drives_opt[index].used) {
drives_opt[index].used = 1;
return index;
}
return -1;
}
int drive_add(const char *file, const char *fmt, ...)
DriveOpt *drive_add(const char *file, const char *fmt, ...)
{
va_list ap;
int index = drive_opt_get_free_idx();
DriveOpt *dopt;
if (nb_drives_opt >= MAX_DRIVES || index == -1) {
fprintf(stderr, "qemu: too many drives\n");
return -1;
}
dopt = qemu_mallocz(sizeof(*dopt));
drives_opt[index].file = file;
dopt->file = file;
va_start(ap, fmt);
vsnprintf(drives_opt[index].opt,
sizeof(drives_opt[0].opt), fmt, ap);
vsnprintf(dopt->opt,
sizeof(dopt->opt), fmt, ap);
va_end(ap);
nb_drives_opt++;
return index;
TAILQ_INSERT_TAIL(&driveopts, dopt, next);
return dopt;
}
void drive_remove(int index)
void drive_remove(DriveOpt *dopt)
{
drives_opt[index].used = 0;
nb_drives_opt--;
TAILQ_REMOVE(&driveopts, dopt, next);
qemu_free(dopt);
}
DriveInfo *drive_get(BlockInterfaceType type, int bus, int unit)
@ -1982,14 +1965,14 @@ void drive_uninit(BlockDriverState *bdrv)
TAILQ_FOREACH(dinfo, &drives, next) {
if (dinfo->bdrv != bdrv)
continue;
drive_remove(dinfo->drive_opt_idx);
drive_remove(dinfo->opt);
TAILQ_REMOVE(&drives, dinfo, next);
qemu_free(dinfo);
break;
}
}
DriveInfo *drive_init(struct drive_opt *arg, int snapshot, void *opaque,
DriveInfo *drive_init(DriveOpt *arg, int snapshot, void *opaque,
int *fatal_error)
{
char buf[128];
@ -2309,7 +2292,7 @@ DriveInfo *drive_init(struct drive_opt *arg, int snapshot, void *opaque,
dinfo->bus = bus_id;
dinfo->unit = unit_id;
dinfo->onerror = onerror;
dinfo->drive_opt_idx = arg - drives_opt;
dinfo->opt = arg;
strncpy(dinfo->serial, serial, sizeof(serial));
TAILQ_INSERT_TAIL(&drives, dinfo, next);
@ -4896,7 +4879,7 @@ int main(int argc, char **argv, char **envp)
int cyls, heads, secs, translation;
const char *net_clients[MAX_NET_CLIENTS];
int nb_net_clients;
int hda_index;
DriveOpt *dopt, *hda_opt = NULL;
int optind;
const char *r, *optarg;
CharDriverState *monitor_hd = NULL;
@ -4990,10 +4973,7 @@ int main(int argc, char **argv, char **envp)
}
nb_net_clients = 0;
nb_drives_opt = 0;
nb_numa_nodes = 0;
hda_index = -1;
nb_nics = 0;
tb_size = 0;
@ -5007,7 +4987,7 @@ int main(int argc, char **argv, char **envp)
break;
r = argv[optind];
if (r[0] != '-') {
hda_index = drive_add(argv[optind++], HD_ALIAS, 0);
hda_opt = drive_add(argv[optind++], HD_ALIAS, 0);
} else {
const QEMUOption *popt;
@ -5071,9 +5051,9 @@ int main(int argc, char **argv, char **envp)
break;
case QEMU_OPTION_hda:
if (cyls == 0)
hda_index = drive_add(optarg, HD_ALIAS, 0);
hda_opt = drive_add(optarg, HD_ALIAS, 0);
else
hda_index = drive_add(optarg, HD_ALIAS
hda_opt = drive_add(optarg, HD_ALIAS
",cyls=%d,heads=%d,secs=%d%s",
0, cyls, heads, secs,
translation == BIOS_ATA_TRANSLATION_LBA ?
@ -5135,9 +5115,9 @@ int main(int argc, char **argv, char **envp)
fprintf(stderr, "qemu: invalid physical CHS format\n");
exit(1);
}
if (hda_index != -1)
snprintf(drives_opt[hda_index].opt,
sizeof(drives_opt[hda_index].opt),
if (hda_opt != NULL)
snprintf(hda_opt->opt,
sizeof(hda_opt->opt),
HD_ALIAS ",cyls=%d,heads=%d,secs=%d%s",
0, cyls, heads, secs,
translation == BIOS_ATA_TRANSLATION_LBA ?
@ -5846,25 +5826,19 @@ int main(int argc, char **argv, char **envp)
bdrv_init();
/* we always create the cdrom drive, even if no disk is there */
if (nb_drives_opt < MAX_DRIVES)
drive_add(NULL, CDROM_ALIAS);
drive_add(NULL, CDROM_ALIAS);
/* we always create at least one floppy */
if (nb_drives_opt < MAX_DRIVES)
drive_add(NULL, FD_ALIAS, 0);
drive_add(NULL, FD_ALIAS, 0);
/* we always create one sd slot, even if no card is in it */
if (nb_drives_opt < MAX_DRIVES)
drive_add(NULL, SD_ALIAS);
drive_add(NULL, SD_ALIAS);
/* open the virtual block devices */
for(i = 0; i < nb_drives_opt; i++) {
TAILQ_FOREACH(dopt, &driveopts, next) {
int fatal_error;
if (drive_init(&drives_opt[i], snapshot, machine, &fatal_error) == NULL)
if (drive_init(dopt, snapshot, machine, &fatal_error) == NULL)
if (fatal_error)
exit(1);
}