diff options
Diffstat (limited to 'block/vpc.c')
| -rw-r--r-- | block/vpc.c | 47 |
1 files changed, 30 insertions, 17 deletions
diff --git a/block/vpc.c b/block/vpc.c index 21e2a6870c..7b025be01d 100644 --- a/block/vpc.c +++ b/block/vpc.c @@ -502,6 +502,7 @@ static int vpc_create(const char *filename, QEMUOptionParameter *options) uint8_t secs_per_cyl = 0; size_t block_size, num_bat_entries; int64_t total_sectors = 0; + int ret = -EIO; // Read out options while (options && options->name) { @@ -521,7 +522,8 @@ static int vpc_create(const char *filename, QEMUOptionParameter *options) for (i = 0; total_sectors > (int64_t)cyls * heads * secs_per_cyl; i++) { if (calculate_geometry(total_sectors + i, &cyls, &heads, &secs_per_cyl)) { - return -EFBIG; + ret = -EFBIG; + goto fail; } } total_sectors = (int64_t) cyls * heads * secs_per_cyl; @@ -560,22 +562,28 @@ static int vpc_create(const char *filename, QEMUOptionParameter *options) block_size = 0x200000; num_bat_entries = (total_sectors + block_size / 512) / (block_size / 512); - if (write(fd, buf, HEADER_SIZE) != HEADER_SIZE) - return -EIO; + if (write(fd, buf, HEADER_SIZE) != HEADER_SIZE) { + goto fail; + } - if (lseek(fd, 1536 + ((num_bat_entries * 4 + 511) & ~511), SEEK_SET) < 0) - return -EIO; - if (write(fd, buf, HEADER_SIZE) != HEADER_SIZE) - return -EIO; + if (lseek(fd, 1536 + ((num_bat_entries * 4 + 511) & ~511), SEEK_SET) < 0) { + goto fail; + } + if (write(fd, buf, HEADER_SIZE) != HEADER_SIZE) { + goto fail; + } // Write the initial BAT - if (lseek(fd, 3 * 512, SEEK_SET) < 0) - return -EIO; + if (lseek(fd, 3 * 512, SEEK_SET) < 0) { + goto fail; + } memset(buf, 0xFF, 512); - for (i = 0; i < (num_bat_entries * 4 + 511) / 512; i++) - if (write(fd, buf, 512) != 512) - return -EIO; + for (i = 0; i < (num_bat_entries * 4 + 511) / 512; i++) { + if (write(fd, buf, 512) != 512) { + goto fail; + } + } // Prepare the Dynamic Disk Header @@ -592,13 +600,18 @@ static int vpc_create(const char *filename, QEMUOptionParameter *options) dyndisk_header->checksum = be32_to_cpu(vpc_checksum(buf, 1024)); // Write the header - if (lseek(fd, 512, SEEK_SET) < 0) - return -EIO; - if (write(fd, buf, 1024) != 1024) - return -EIO; + if (lseek(fd, 512, SEEK_SET) < 0) { + goto fail; + } + if (write(fd, buf, 1024) != 1024) { + goto fail; + } + ret = 0; + + fail: close(fd); - return 0; + return ret; } static void vpc_close(BlockDriverState *bs) |