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Annotation of qemu/block/raw.c, revision 1.1.1.2

1.1       root        1: 
                      2: #include "qemu-common.h"
                      3: #include "block_int.h"
                      4: #include "module.h"
                      5: 
                      6: static int raw_open(BlockDriverState *bs, int flags)
                      7: {
                      8:     bs->sg = bs->file->sg;
                      9:     return 0;
                     10: }
                     11: 
                     12: static int raw_read(BlockDriverState *bs, int64_t sector_num,
                     13:                     uint8_t *buf, int nb_sectors)
                     14: {
                     15:     return bdrv_read(bs->file, sector_num, buf, nb_sectors);
                     16: }
                     17: 
                     18: static int raw_write(BlockDriverState *bs, int64_t sector_num,
                     19:                      const uint8_t *buf, int nb_sectors)
                     20: {
                     21:     return bdrv_write(bs->file, sector_num, buf, nb_sectors);
                     22: }
                     23: 
                     24: static BlockDriverAIOCB *raw_aio_readv(BlockDriverState *bs,
                     25:     int64_t sector_num, QEMUIOVector *qiov, int nb_sectors,
                     26:     BlockDriverCompletionFunc *cb, void *opaque)
                     27: {
                     28:     return bdrv_aio_readv(bs->file, sector_num, qiov, nb_sectors, cb, opaque);
                     29: }
                     30: 
                     31: static BlockDriverAIOCB *raw_aio_writev(BlockDriverState *bs,
                     32:     int64_t sector_num, QEMUIOVector *qiov, int nb_sectors,
                     33:     BlockDriverCompletionFunc *cb, void *opaque)
                     34: {
                     35:     return bdrv_aio_writev(bs->file, sector_num, qiov, nb_sectors, cb, opaque);
                     36: }
                     37: 
                     38: static void raw_close(BlockDriverState *bs)
                     39: {
                     40: }
                     41: 
1.1.1.2 ! root       42: static int raw_flush(BlockDriverState *bs)
1.1       root       43: {
1.1.1.2 ! root       44:     return bdrv_flush(bs->file);
1.1       root       45: }
                     46: 
                     47: static BlockDriverAIOCB *raw_aio_flush(BlockDriverState *bs,
                     48:     BlockDriverCompletionFunc *cb, void *opaque)
                     49: {
                     50:     return bdrv_aio_flush(bs->file, cb, opaque);
                     51: }
                     52: 
                     53: static int64_t raw_getlength(BlockDriverState *bs)
                     54: {
                     55:     return bdrv_getlength(bs->file);
                     56: }
                     57: 
                     58: static int raw_truncate(BlockDriverState *bs, int64_t offset)
                     59: {
                     60:     return bdrv_truncate(bs->file, offset);
                     61: }
                     62: 
                     63: static int raw_probe(const uint8_t *buf, int buf_size, const char *filename)
                     64: {
                     65:    return 1; /* everything can be opened as raw image */
                     66: }
                     67: 
1.1.1.2 ! root       68: static int raw_discard(BlockDriverState *bs, int64_t sector_num, int nb_sectors)
        !            69: {
        !            70:     return bdrv_discard(bs->file, sector_num, nb_sectors);
        !            71: }
        !            72: 
1.1       root       73: static int raw_is_inserted(BlockDriverState *bs)
                     74: {
                     75:     return bdrv_is_inserted(bs->file);
                     76: }
                     77: 
                     78: static int raw_eject(BlockDriverState *bs, int eject_flag)
                     79: {
                     80:     return bdrv_eject(bs->file, eject_flag);
                     81: }
                     82: 
                     83: static int raw_set_locked(BlockDriverState *bs, int locked)
                     84: {
                     85:     bdrv_set_locked(bs->file, locked);
                     86:     return 0;
                     87: }
                     88: 
                     89: static int raw_ioctl(BlockDriverState *bs, unsigned long int req, void *buf)
                     90: {
                     91:    return bdrv_ioctl(bs->file, req, buf);
                     92: }
                     93: 
                     94: static BlockDriverAIOCB *raw_aio_ioctl(BlockDriverState *bs,
                     95:         unsigned long int req, void *buf,
                     96:         BlockDriverCompletionFunc *cb, void *opaque)
                     97: {
                     98:    return bdrv_aio_ioctl(bs->file, req, buf, cb, opaque);
                     99: }
                    100: 
                    101: static int raw_create(const char *filename, QEMUOptionParameter *options)
                    102: {
                    103:     return bdrv_create_file(filename, options);
                    104: }
                    105: 
                    106: static QEMUOptionParameter raw_create_options[] = {
                    107:     {
                    108:         .name = BLOCK_OPT_SIZE,
                    109:         .type = OPT_SIZE,
                    110:         .help = "Virtual disk size"
                    111:     },
                    112:     { NULL }
                    113: };
                    114: 
                    115: static int raw_has_zero_init(BlockDriverState *bs)
                    116: {
                    117:     return bdrv_has_zero_init(bs->file);
                    118: }
                    119: 
                    120: static BlockDriver bdrv_raw = {
                    121:     .format_name        = "raw",
                    122: 
                    123:     /* It's really 0, but we need to make qemu_malloc() happy */
                    124:     .instance_size      = 1,
                    125: 
                    126:     .bdrv_open          = raw_open,
                    127:     .bdrv_close         = raw_close,
                    128:     .bdrv_read          = raw_read,
                    129:     .bdrv_write         = raw_write,
                    130:     .bdrv_flush         = raw_flush,
                    131:     .bdrv_probe         = raw_probe,
                    132:     .bdrv_getlength     = raw_getlength,
                    133:     .bdrv_truncate      = raw_truncate,
                    134: 
                    135:     .bdrv_aio_readv     = raw_aio_readv,
                    136:     .bdrv_aio_writev    = raw_aio_writev,
                    137:     .bdrv_aio_flush     = raw_aio_flush,
1.1.1.2 ! root      138:     .bdrv_discard       = raw_discard,
1.1       root      139: 
                    140:     .bdrv_is_inserted   = raw_is_inserted,
                    141:     .bdrv_eject         = raw_eject,
                    142:     .bdrv_set_locked    = raw_set_locked,
                    143:     .bdrv_ioctl         = raw_ioctl,
                    144:     .bdrv_aio_ioctl     = raw_aio_ioctl,
                    145: 
                    146:     .bdrv_create        = raw_create,
                    147:     .create_options     = raw_create_options,
                    148:     .bdrv_has_zero_init = raw_has_zero_init,
                    149: };
                    150: 
                    151: static void bdrv_raw_init(void)
                    152: {
                    153:     bdrv_register(&bdrv_raw);
                    154: }
                    155: 
                    156: block_init(bdrv_raw_init);

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