diff options
Diffstat (limited to 'block.c')
| -rw-r--r-- | block.c | 96 |
1 files changed, 48 insertions, 48 deletions
@@ -1,8 +1,8 @@ /* * QEMU System Emulator block driver - * + * * Copyright (c) 2003 Fabrice Bellard - * + * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights @@ -48,7 +48,7 @@ static BlockDriverAIOCB *bdrv_aio_write_em(BlockDriverState *bs, int64_t sector_num, const uint8_t *buf, int nb_sectors, BlockDriverCompletionFunc *cb, void *opaque); static void bdrv_aio_cancel_em(BlockDriverAIOCB *acb); -static int bdrv_read_em(BlockDriverState *bs, int64_t sector_num, +static int bdrv_read_em(BlockDriverState *bs, int64_t sector_num, uint8_t *buf, int nb_sectors); static int bdrv_write_em(BlockDriverState *bs, int64_t sector_num, const uint8_t *buf, int nb_sectors); @@ -167,7 +167,7 @@ BlockDriver *bdrv_find_format(const char *format_name) return NULL; } -int bdrv_create(BlockDriver *drv, +int bdrv_create(BlockDriver *drv, const char *filename, int64_t size_in_sectors, const char *backing_file, int flags) { @@ -180,7 +180,7 @@ int bdrv_create(BlockDriver *drv, void get_tmp_filename(char *filename, int size) { char temp_dir[MAX_PATH]; - + GetTempPath(MAX_PATH, temp_dir); GetTempFileName(temp_dir, "qem", 0, filename); } @@ -202,10 +202,10 @@ static int is_windows_drive_prefix(const char *filename) (filename[0] >= 'A' && filename[0] <= 'Z')) && filename[1] == ':'); } - + static int is_windows_drive(const char *filename) { - if (is_windows_drive_prefix(filename) && + if (is_windows_drive_prefix(filename) && filename[2] == '\0') return 1; if (strstart(filename, "\\\\.\\", NULL) || @@ -236,7 +236,7 @@ static BlockDriver *find_protocol(const char *filename) memcpy(protocol, filename, len); protocol[len] = '\0'; for(drv1 = first_drv; drv1 != NULL; drv1 = drv1->next) { - if (drv1->protocol_name && + if (drv1->protocol_name && !strcmp(drv1->protocol_name, protocol)) return drv1; } @@ -251,7 +251,7 @@ static BlockDriver *find_image_format(const char *filename) BlockDriver *drv1, *drv; uint8_t buf[2048]; BlockDriverState *bs; - + /* detect host devices. By convention, /dev/cdrom[N] is always recognized as a host CDROM */ if (strstart(filename, "/dev/cdrom", NULL)) @@ -262,13 +262,13 @@ static BlockDriver *find_image_format(const char *filename) #else { struct stat st; - if (stat(filename, &st) >= 0 && + if (stat(filename, &st) >= 0 && (S_ISCHR(st.st_mode) || S_ISBLK(st.st_mode))) { return &bdrv_host_device; } } #endif - + drv = find_protocol(filename); /* no need to test disk image formats for vvfat */ if (drv == &bdrv_vvfat) @@ -324,7 +324,7 @@ int bdrv_open2(BlockDriverState *bs, const char *filename, int flags, int ret, open_flags; char tmp_filename[PATH_MAX]; char backing_filename[PATH_MAX]; - + bs->read_only = 0; bs->is_temporary = 0; bs->encrypted = 0; @@ -332,7 +332,7 @@ int bdrv_open2(BlockDriverState *bs, const char *filename, int flags, if (flags & BDRV_O_SNAPSHOT) { BlockDriverState *bs1; int64_t total_size; - + /* if snapshot, we create a temporary backing file and open it instead of opening 'filename' directly */ @@ -347,10 +347,10 @@ int bdrv_open2(BlockDriverState *bs, const char *filename, int flags, } total_size = bdrv_getlength(bs1) >> SECTOR_BITS; bdrv_delete(bs1); - + get_tmp_filename(tmp_filename, sizeof(tmp_filename)); realpath(filename, backing_filename); - if (bdrv_create(&bdrv_qcow2, tmp_filename, + if (bdrv_create(&bdrv_qcow2, tmp_filename, total_size, backing_filename, 0) < 0) { return -1; } @@ -494,7 +494,7 @@ int bdrv_commit(BlockDriverState *bs) } /* return < 0 if error. See bdrv_write() for the return codes */ -int bdrv_read(BlockDriverState *bs, int64_t sector_num, +int bdrv_read(BlockDriverState *bs, int64_t sector_num, uint8_t *buf, int nb_sectors) { BlockDriver *drv = bs->drv; @@ -525,13 +525,13 @@ int bdrv_read(BlockDriverState *bs, int64_t sector_num, } } -/* Return < 0 if error. Important errors are: +/* Return < 0 if error. Important errors are: -EIO generic I/O error (may happen for all errors) -ENOMEDIUM No media inserted. -EINVAL Invalid sector number or nb_sectors -EACCES Trying to write a read-only device */ -int bdrv_write(BlockDriverState *bs, int64_t sector_num, +int bdrv_write(BlockDriverState *bs, int64_t sector_num, const uint8_t *buf, int nb_sectors) { BlockDriver *drv = bs->drv; @@ -540,7 +540,7 @@ int bdrv_write(BlockDriverState *bs, int64_t sector_num, if (bs->read_only) return -EACCES; if (sector_num == 0 && bs->boot_sector_enabled && nb_sectors > 0) { - memcpy(bs->boot_sector_data, buf, 512); + memcpy(bs->boot_sector_data, buf, 512); } if (drv->bdrv_pwrite) { int ret, len; @@ -557,7 +557,7 @@ int bdrv_write(BlockDriverState *bs, int64_t sector_num, } } -static int bdrv_pread_em(BlockDriverState *bs, int64_t offset, +static int bdrv_pread_em(BlockDriverState *bs, int64_t offset, uint8_t *buf, int count1) { uint8_t tmp_buf[SECTOR_SIZE]; @@ -601,7 +601,7 @@ static int bdrv_pread_em(BlockDriverState *bs, int64_t offset, return count1; } -static int bdrv_pwrite_em(BlockDriverState *bs, int64_t offset, +static int bdrv_pwrite_em(BlockDriverState *bs, int64_t offset, const uint8_t *buf, int count1) { uint8_t tmp_buf[SECTOR_SIZE]; @@ -650,9 +650,9 @@ static int bdrv_pwrite_em(BlockDriverState *bs, int64_t offset, } /** - * Read with byte offsets (needed only for file protocols) + * Read with byte offsets (needed only for file protocols) */ -int bdrv_pread(BlockDriverState *bs, int64_t offset, +int bdrv_pread(BlockDriverState *bs, int64_t offset, void *buf1, int count1) { BlockDriver *drv = bs->drv; @@ -664,10 +664,10 @@ int bdrv_pread(BlockDriverState *bs, int64_t offset, return drv->bdrv_pread(bs, offset, buf1, count1); } -/** - * Write with byte offsets (needed only for file protocols) +/** + * Write with byte offsets (needed only for file protocols) */ -int bdrv_pwrite(BlockDriverState *bs, int64_t offset, +int bdrv_pwrite(BlockDriverState *bs, int64_t offset, const void *buf1, int count1) { BlockDriver *drv = bs->drv; @@ -729,7 +729,7 @@ void bdrv_set_boot_sector(BlockDriverState *bs, const uint8_t *data, int size) memset(bs->boot_sector_data + size, 0, 512 - size); } -void bdrv_set_geometry_hint(BlockDriverState *bs, +void bdrv_set_geometry_hint(BlockDriverState *bs, int cyls, int heads, int secs) { bs->cyls = cyls; @@ -749,7 +749,7 @@ void bdrv_set_translation_hint(BlockDriverState *bs, int translation) bs->translation = translation; } -void bdrv_get_geometry_hint(BlockDriverState *bs, +void bdrv_get_geometry_hint(BlockDriverState *bs, int *pcyls, int *pheads, int *psecs) { *pcyls = bs->cyls; @@ -778,7 +778,7 @@ int bdrv_is_read_only(BlockDriverState *bs) } /* XXX: no longer used */ -void bdrv_set_change_cb(BlockDriverState *bs, +void bdrv_set_change_cb(BlockDriverState *bs, void (*change_cb)(void *opaque), void *opaque) { bs->change_cb = change_cb; @@ -816,7 +816,7 @@ void bdrv_get_format(BlockDriverState *bs, char *buf, int buf_size) } } -void bdrv_iterate_format(void (*it)(void *opaque, const char *name), +void bdrv_iterate_format(void (*it)(void *opaque, const char *name), void *opaque) { BlockDriver *drv; @@ -899,7 +899,7 @@ void bdrv_info(void) } } -void bdrv_get_backing_filename(BlockDriverState *bs, +void bdrv_get_backing_filename(BlockDriverState *bs, char *filename, int filename_size) { if (!bs->backing_hd) { @@ -909,7 +909,7 @@ void bdrv_get_backing_filename(BlockDriverState *bs, } } -int bdrv_write_compressed(BlockDriverState *bs, int64_t sector_num, +int bdrv_write_compressed(BlockDriverState *bs, int64_t sector_num, const uint8_t *buf, int nb_sectors) { BlockDriver *drv = bs->drv; @@ -919,7 +919,7 @@ int bdrv_write_compressed(BlockDriverState *bs, int64_t sector_num, return -ENOTSUP; return drv->bdrv_write_compressed(bs, sector_num, buf, nb_sectors); } - + int bdrv_get_info(BlockDriverState *bs, BlockDriverInfo *bdi) { BlockDriver *drv = bs->drv; @@ -934,7 +934,7 @@ int bdrv_get_info(BlockDriverState *bs, BlockDriverInfo *bdi) /**************************************************************/ /* handling of snapshots */ -int bdrv_snapshot_create(BlockDriverState *bs, +int bdrv_snapshot_create(BlockDriverState *bs, QEMUSnapshotInfo *sn_info) { BlockDriver *drv = bs->drv; @@ -945,7 +945,7 @@ int bdrv_snapshot_create(BlockDriverState *bs, return drv->bdrv_snapshot_create(bs, sn_info); } -int bdrv_snapshot_goto(BlockDriverState *bs, +int bdrv_snapshot_goto(BlockDriverState *bs, const char *snapshot_id) { BlockDriver *drv = bs->drv; @@ -966,7 +966,7 @@ int bdrv_snapshot_delete(BlockDriverState *bs, const char *snapshot_id) return drv->bdrv_snapshot_delete(bs, snapshot_id); } -int bdrv_snapshot_list(BlockDriverState *bs, +int bdrv_snapshot_list(BlockDriverState *bs, QEMUSnapshotInfo **psn_info) { BlockDriver *drv = bs->drv; @@ -991,12 +991,12 @@ char *get_human_readable_size(char *buf, int buf_size, int64_t size) base = 1024; for(i = 0; i < NB_SUFFIXES; i++) { if (size < (10 * base)) { - snprintf(buf, buf_size, "%0.1f%c", + snprintf(buf, buf_size, "%0.1f%c", (double)size / base, suffixes[i]); break; } else if (size < (1000 * base) || i == (NB_SUFFIXES - 1)) { - snprintf(buf, buf_size, "%" PRId64 "%c", + snprintf(buf, buf_size, "%" PRId64 "%c", ((size + (base >> 1)) / base), suffixes[i]); break; @@ -1019,8 +1019,8 @@ char *bdrv_snapshot_dump(char *buf, int buf_size, QEMUSnapshotInfo *sn) int64_t secs; if (!sn) { - snprintf(buf, buf_size, - "%-10s%-20s%7s%20s%15s", + snprintf(buf, buf_size, + "%-10s%-20s%7s%20s%15s", "ID", "TAG", "VM SIZE", "DATE", "VM CLOCK"); } else { ti = sn->date_sec; @@ -1038,10 +1038,10 @@ char *bdrv_snapshot_dump(char *buf, int buf_size, QEMUSnapshotInfo *sn) "%02d:%02d:%02d.%03d", (int)(secs / 3600), (int)((secs / 60) % 60), - (int)(secs % 60), + (int)(secs % 60), (int)((sn->vm_clock_nsec / 1000000) % 1000)); snprintf(buf, buf_size, - "%-10s%-20s%7s%20s%15s", + "%-10s%-20s%7s%20s%15s", sn->id_str, sn->name, get_human_readable_size(buf1, sizeof(buf1), sn->vm_state_size), date_buf, @@ -1062,7 +1062,7 @@ BlockDriverAIOCB *bdrv_aio_read(BlockDriverState *bs, int64_t sector_num, if (!drv) return NULL; - + /* XXX: we assume that nb_sectors == 0 is suppored by the async read */ if (sector_num == 0 && bs->boot_sector_enabled && nb_sectors > 0) { memcpy(buf, bs->boot_sector_data, 512); @@ -1085,7 +1085,7 @@ BlockDriverAIOCB *bdrv_aio_write(BlockDriverState *bs, int64_t sector_num, if (bs->read_only) return NULL; if (sector_num == 0 && bs->boot_sector_enabled && nb_sectors > 0) { - memcpy(bs->boot_sector_data, buf, 512); + memcpy(bs->boot_sector_data, buf, 512); } return drv->bdrv_aio_write(bs, sector_num, buf, nb_sectors, cb, opaque); @@ -1184,7 +1184,7 @@ static void bdrv_rw_em_cb(void *opaque, int ret) #define NOT_DONE 0x7fffffff -static int bdrv_read_em(BlockDriverState *bs, int64_t sector_num, +static int bdrv_read_em(BlockDriverState *bs, int64_t sector_num, uint8_t *buf, int nb_sectors) { int async_ret; @@ -1192,7 +1192,7 @@ static int bdrv_read_em(BlockDriverState *bs, int64_t sector_num, async_ret = NOT_DONE; qemu_aio_wait_start(); - acb = bdrv_aio_read(bs, sector_num, buf, nb_sectors, + acb = bdrv_aio_read(bs, sector_num, buf, nb_sectors, bdrv_rw_em_cb, &async_ret); if (acb == NULL) { qemu_aio_wait_end(); @@ -1213,7 +1213,7 @@ static int bdrv_write_em(BlockDriverState *bs, int64_t sector_num, async_ret = NOT_DONE; qemu_aio_wait_start(); - acb = bdrv_aio_write(bs, sector_num, buf, nb_sectors, + acb = bdrv_aio_write(bs, sector_num, buf, nb_sectors, bdrv_rw_em_cb, &async_ret); if (acb == NULL) { qemu_aio_wait_end(); @@ -1293,7 +1293,7 @@ int bdrv_is_inserted(BlockDriverState *bs) /** * Return TRUE if the media changed since the last call to this - * function. It is currently only used for floppy disks + * function. It is currently only used for floppy disks */ int bdrv_media_changed(BlockDriverState *bs) { |