diff options
Diffstat (limited to 'block/vhdx-log.c')
| -rw-r--r-- | block/vhdx-log.c | 103 |
1 files changed, 55 insertions, 48 deletions
diff --git a/block/vhdx-log.c b/block/vhdx-log.c index d2f1b98199..4385a2d4f6 100644 --- a/block/vhdx-log.c +++ b/block/vhdx-log.c @@ -17,13 +17,14 @@ * See the COPYING.LIB file in the top-level directory. * */ + #include "qemu/osdep.h" #include "qapi/error.h" -#include "qemu-common.h" +#include "block/block-io.h" #include "block/block_int.h" #include "qemu/error-report.h" -#include "qemu/module.h" #include "qemu/bswap.h" +#include "qemu/memalign.h" #include "vhdx.h" @@ -54,8 +55,9 @@ static const MSGUID zero_guid = { 0 }; /* Allow peeking at the hdr entry at the beginning of the current * read index, without advancing the read index */ -static int vhdx_log_peek_hdr(BlockDriverState *bs, VHDXLogEntries *log, - VHDXLogEntryHeader *hdr) +static int GRAPH_RDLOCK +vhdx_log_peek_hdr(BlockDriverState *bs, VHDXLogEntries *log, + VHDXLogEntryHeader *hdr) { int ret = 0; uint64_t offset; @@ -84,7 +86,7 @@ static int vhdx_log_peek_hdr(BlockDriverState *bs, VHDXLogEntries *log, offset = log->offset + read; - ret = bdrv_pread(bs->file, offset, hdr, sizeof(VHDXLogEntryHeader)); + ret = bdrv_pread(bs->file, offset, sizeof(VHDXLogEntryHeader), hdr, 0); if (ret < 0) { goto exit; } @@ -106,7 +108,7 @@ static int vhdx_log_inc_idx(uint32_t idx, uint64_t length) /* Reset the log to empty */ -static void vhdx_log_reset(BlockDriverState *bs, BDRVVHDXState *s) +static void GRAPH_RDLOCK vhdx_log_reset(BlockDriverState *bs, BDRVVHDXState *s) { MSGUID guid = { 0 }; s->log.read = s->log.write = 0; @@ -126,9 +128,10 @@ static void vhdx_log_reset(BlockDriverState *bs, BDRVVHDXState *s) * not modified. * * 0 is returned on success, -errno otherwise. */ -static int vhdx_log_read_sectors(BlockDriverState *bs, VHDXLogEntries *log, - uint32_t *sectors_read, void *buffer, - uint32_t num_sectors, bool peek) +static int GRAPH_RDLOCK +vhdx_log_read_sectors(BlockDriverState *bs, VHDXLogEntries *log, + uint32_t *sectors_read, void *buffer, + uint32_t num_sectors, bool peek) { int ret = 0; uint64_t offset; @@ -144,7 +147,7 @@ static int vhdx_log_read_sectors(BlockDriverState *bs, VHDXLogEntries *log, } offset = log->offset + read; - ret = bdrv_pread(bs->file, offset, buffer, VHDX_LOG_SECTOR_SIZE); + ret = bdrv_pread(bs->file, offset, VHDX_LOG_SECTOR_SIZE, buffer, 0); if (ret < 0) { goto exit; } @@ -168,9 +171,10 @@ exit: * It is assumed that 'buffer' is at least 4096*num_sectors large. * * 0 is returned on success, -errno otherwise */ -static int vhdx_log_write_sectors(BlockDriverState *bs, VHDXLogEntries *log, - uint32_t *sectors_written, void *buffer, - uint32_t num_sectors) +static int coroutine_fn GRAPH_RDLOCK +vhdx_log_write_sectors(BlockDriverState *bs, VHDXLogEntries *log, + uint32_t *sectors_written, void *buffer, + uint32_t num_sectors) { int ret = 0; uint64_t offset; @@ -194,8 +198,7 @@ static int vhdx_log_write_sectors(BlockDriverState *bs, VHDXLogEntries *log, /* full */ break; } - ret = bdrv_pwrite(bs->file, offset, buffer_tmp, - VHDX_LOG_SECTOR_SIZE); + ret = bdrv_co_pwrite(bs->file, offset, VHDX_LOG_SECTOR_SIZE, buffer_tmp, 0); if (ret < 0) { goto exit; } @@ -332,9 +335,9 @@ static int vhdx_compute_desc_sectors(uint32_t desc_cnt) * will allocate all the space for buffer, which must be NULL when * passed into this function. Each descriptor will also be validated, * and error returned if any are invalid. */ -static int vhdx_log_read_desc(BlockDriverState *bs, BDRVVHDXState *s, - VHDXLogEntries *log, VHDXLogDescEntries **buffer, - bool convert_endian) +static int GRAPH_RDLOCK +vhdx_log_read_desc(BlockDriverState *bs, BDRVVHDXState *s, VHDXLogEntries *log, + VHDXLogDescEntries **buffer, bool convert_endian) { int ret = 0; uint32_t desc_sectors; @@ -411,8 +414,9 @@ exit: * For a zero descriptor, it may describe multiple sectors to fill with zeroes. * In this case, it should be noted that zeroes are written to disk, and the * image file is not extended as a sparse file. */ -static int vhdx_log_flush_desc(BlockDriverState *bs, VHDXLogDescriptor *desc, - VHDXLogDataSector *data) +static int GRAPH_RDLOCK +vhdx_log_flush_desc(BlockDriverState *bs, VHDXLogDescriptor *desc, + VHDXLogDataSector *data) { int ret = 0; uint64_t seq, file_offset; @@ -466,8 +470,8 @@ static int vhdx_log_flush_desc(BlockDriverState *bs, VHDXLogDescriptor *desc, /* count is only > 1 if we are writing zeroes */ for (i = 0; i < count; i++) { - ret = bdrv_pwrite_sync(bs->file, file_offset, buffer, - VHDX_LOG_SECTOR_SIZE); + ret = bdrv_pwrite_sync(bs->file, file_offset, VHDX_LOG_SECTOR_SIZE, + buffer, 0); if (ret < 0) { goto exit; } @@ -483,8 +487,8 @@ exit: * file, and then set the log to 'empty' status once complete. * * The log entries should be validate prior to flushing */ -static int vhdx_log_flush(BlockDriverState *bs, BDRVVHDXState *s, - VHDXLogSequence *logs) +static int GRAPH_RDLOCK +vhdx_log_flush(BlockDriverState *bs, BDRVVHDXState *s, VHDXLogSequence *logs) { int ret = 0; int i; @@ -551,15 +555,15 @@ static int vhdx_log_flush(BlockDriverState *bs, BDRVVHDXState *s, } if (file_length < desc_entries->hdr.last_file_offset) { new_file_size = desc_entries->hdr.last_file_offset; - if (new_file_size % (1024*1024)) { + if (new_file_size % (1 * MiB)) { /* round up to nearest 1MB boundary */ new_file_size = QEMU_ALIGN_UP(new_file_size, MiB); if (new_file_size > INT64_MAX) { ret = -EINVAL; goto exit; } - ret = bdrv_truncate(bs->file, new_file_size, PREALLOC_MODE_OFF, - NULL); + ret = bdrv_truncate(bs->file, new_file_size, false, + PREALLOC_MODE_OFF, 0, NULL); if (ret < 0) { goto exit; } @@ -583,9 +587,10 @@ exit: return ret; } -static int vhdx_validate_log_entry(BlockDriverState *bs, BDRVVHDXState *s, - VHDXLogEntries *log, uint64_t seq, - bool *valid, VHDXLogEntryHeader *entry) +static int GRAPH_RDLOCK +vhdx_validate_log_entry(BlockDriverState *bs, BDRVVHDXState *s, + VHDXLogEntries *log, uint64_t seq, + bool *valid, VHDXLogEntryHeader *entry) { int ret = 0; VHDXLogEntryHeader hdr; @@ -662,8 +667,8 @@ free_and_exit: /* Search through the log circular buffer, and find the valid, active * log sequence, if any exists * */ -static int vhdx_log_search(BlockDriverState *bs, BDRVVHDXState *s, - VHDXLogSequence *logs) +static int GRAPH_RDLOCK +vhdx_log_search(BlockDriverState *bs, BDRVVHDXState *s, VHDXLogSequence *logs) { int ret = 0; uint32_t tail; @@ -802,7 +807,8 @@ int vhdx_parse_log(BlockDriverState *bs, BDRVVHDXState *s, bool *flushed, } if (logs.valid) { - if (bs->read_only) { + if (bdrv_is_read_only(bs)) { + bdrv_refresh_filename(bs); ret = -EPERM; error_setg(errp, "VHDX image file '%s' opened read-only, but " @@ -835,11 +841,11 @@ static void vhdx_log_raw_to_le_sector(VHDXLogDescriptor *desc, /* 8 + 4084 + 4 = 4096, 1 log sector */ memcpy(&desc->leading_bytes, data, 8); data += 8; - cpu_to_le64s(&desc->leading_bytes); + desc->leading_bytes = cpu_to_le64(desc->leading_bytes); memcpy(sector->data, data, 4084); data += 4084; memcpy(&desc->trailing_bytes, data, 4); - cpu_to_le32s(&desc->trailing_bytes); + desc->trailing_bytes = cpu_to_le32(desc->trailing_bytes); data += 4; sector->sequence_high = (uint32_t) (seq >> 32); @@ -851,8 +857,9 @@ static void vhdx_log_raw_to_le_sector(VHDXLogDescriptor *desc, } -static int vhdx_log_write(BlockDriverState *bs, BDRVVHDXState *s, - void *data, uint32_t length, uint64_t offset) +static int coroutine_fn GRAPH_RDLOCK +vhdx_log_write(BlockDriverState *bs, BDRVVHDXState *s, + void *data, uint32_t length, uint64_t offset) { int ret = 0; void *buffer = NULL; @@ -922,7 +929,7 @@ static int vhdx_log_write(BlockDriverState *bs, BDRVVHDXState *s, sectors += partial_sectors; - file_length = bdrv_getlength(bs->file->bs); + file_length = bdrv_co_getlength(bs->file->bs); if (file_length < 0) { ret = file_length; goto exit; @@ -969,8 +976,8 @@ static int vhdx_log_write(BlockDriverState *bs, BDRVVHDXState *s, if (i == 0 && leading_length) { /* partial sector at the front of the buffer */ - ret = bdrv_pread(bs->file, file_offset, merged_sector, - VHDX_LOG_SECTOR_SIZE); + ret = bdrv_co_pread(bs->file, file_offset, VHDX_LOG_SECTOR_SIZE, + merged_sector, 0); if (ret < 0) { goto exit; } @@ -979,10 +986,9 @@ static int vhdx_log_write(BlockDriverState *bs, BDRVVHDXState *s, sector_write = merged_sector; } else if (i == sectors - 1 && trailing_length) { /* partial sector at the end of the buffer */ - ret = bdrv_pread(bs->file, - file_offset, - merged_sector + trailing_length, - VHDX_LOG_SECTOR_SIZE - trailing_length); + ret = bdrv_co_pread(bs->file, file_offset + trailing_length, + VHDX_LOG_SECTOR_SIZE - trailing_length, + merged_sector + trailing_length, 0); if (ret < 0) { goto exit; } @@ -1035,8 +1041,9 @@ exit: } /* Perform a log write, and then immediately flush the entire log */ -int vhdx_log_write_and_flush(BlockDriverState *bs, BDRVVHDXState *s, - void *data, uint32_t length, uint64_t offset) +int coroutine_fn +vhdx_log_write_and_flush(BlockDriverState *bs, BDRVVHDXState *s, + void *data, uint32_t length, uint64_t offset) { int ret = 0; VHDXLogSequence logs = { .valid = true, @@ -1046,7 +1053,7 @@ int vhdx_log_write_and_flush(BlockDriverState *bs, BDRVVHDXState *s, /* Make sure data written (new and/or changed blocks) is stable * on disk, before creating log entry */ - ret = bdrv_flush(bs); + ret = bdrv_co_flush(bs); if (ret < 0) { goto exit; } @@ -1058,7 +1065,7 @@ int vhdx_log_write_and_flush(BlockDriverState *bs, BDRVVHDXState *s, logs.log = s->log; /* Make sure log is stable on disk */ - ret = bdrv_flush(bs); + ret = bdrv_co_flush(bs); if (ret < 0) { goto exit; } |