diff options
| -rw-r--r-- | fs/ext2/dev.c | 82 |
1 files changed, 43 insertions, 39 deletions
diff --git a/fs/ext2/dev.c b/fs/ext2/dev.c index 3b49650..4365b3b 100644 --- a/fs/ext2/dev.c +++ b/fs/ext2/dev.c @@ -31,7 +31,7 @@ static block_dev_desc_t *ext2fs_block_dev_desc; static disk_partition_t part_info; -int ext2fs_set_blk_dev (block_dev_desc_t * rbdd, int part) +int ext2fs_set_blk_dev(block_dev_desc_t *rbdd, int part) { ext2fs_block_dev_desc = rbdd; @@ -46,51 +46,55 @@ int ext2fs_set_blk_dev (block_dev_desc_t * rbdd, int part) return 0; } } - return (part_info.size); + return part_info.size; } -int ext2fs_devread (int sector, int byte_offset, int byte_len, char *buf) { +int ext2fs_devread(int sector, int byte_offset, int byte_len, char *buf) +{ char sec_buf[SECTOR_SIZE]; unsigned block_len; -/* - * Check partition boundaries - */ - if ((sector < 0) - || ((sector + ((byte_offset + byte_len - 1) >> SECTOR_BITS)) >= + /* + * Check partition boundaries + */ + if ((sector < 0) || + ((sector + ((byte_offset + byte_len - 1) >> SECTOR_BITS)) >= part_info.size)) { - /* errnum = ERR_OUTSIDE_PART; */ - printf (" ** ext2fs_devread() read outside partition sector %d\n", sector); - return (0); + /* errnum = ERR_OUTSIDE_PART; */ + printf(" ** %s read outside partition sector %d\n", + __func__, + sector); + return 0; } -/* - * Get the read to the beginning of a partition. - */ + /* + * Get the read to the beginning of a partition. + */ sector += byte_offset >> SECTOR_BITS; byte_offset &= SECTOR_SIZE - 1; - debug (" <%d, %d, %d>\n", sector, byte_offset, byte_len); + debug(" <%d, %d, %d>\n", sector, byte_offset, byte_len); if (ext2fs_block_dev_desc == NULL) { - printf ("** Invalid Block Device Descriptor (NULL)\n"); - return (0); + printf(" ** %s Invalid Block Device Descriptor (NULL)\n", + __func__); + return 0; } if (byte_offset != 0) { /* read first part which isn't aligned with start of sector */ if (ext2fs_block_dev_desc-> - block_read (ext2fs_block_dev_desc->dev, - part_info.start + sector, 1, - (unsigned long *) sec_buf) != 1) { - printf (" ** ext2fs_devread() read error **\n"); - return (0); + block_read(ext2fs_block_dev_desc->dev, + part_info.start + sector, 1, + (unsigned long *) sec_buf) != 1) { + printf(" ** %s read error **\n", __func__); + return 0; } - memcpy (buf, sec_buf + byte_offset, - min (SECTOR_SIZE - byte_offset, byte_len)); - buf += min (SECTOR_SIZE - byte_offset, byte_len); - byte_len -= min (SECTOR_SIZE - byte_offset, byte_len); + memcpy(buf, sec_buf + byte_offset, + min(SECTOR_SIZE - byte_offset, byte_len)); + buf += min(SECTOR_SIZE - byte_offset, byte_len); + byte_len -= min(SECTOR_SIZE - byte_offset, byte_len); sector++; } @@ -111,13 +115,13 @@ int ext2fs_devread (int sector, int byte_offset, int byte_len, char *buf) { return 1; } - if (ext2fs_block_dev_desc->block_read (ext2fs_block_dev_desc->dev, - part_info.start + sector, - block_len / SECTOR_SIZE, - (unsigned long *) buf) != + if (ext2fs_block_dev_desc->block_read(ext2fs_block_dev_desc->dev, + part_info.start + sector, + block_len / SECTOR_SIZE, + (unsigned long *) buf) != block_len / SECTOR_SIZE) { - printf (" ** ext2fs_devread() read error - block\n"); - return (0); + printf(" ** %s read error - block\n", __func__); + return 0; } block_len = byte_len & ~(SECTOR_SIZE - 1); buf += block_len; @@ -127,13 +131,13 @@ int ext2fs_devread (int sector, int byte_offset, int byte_len, char *buf) { if (byte_len != 0) { /* read rest of data which are not in whole sector */ if (ext2fs_block_dev_desc-> - block_read (ext2fs_block_dev_desc->dev, - part_info.start + sector, 1, - (unsigned long *) sec_buf) != 1) { - printf (" ** ext2fs_devread() read error - last part\n"); - return (0); + block_read(ext2fs_block_dev_desc->dev, + part_info.start + sector, 1, + (unsigned long *) sec_buf) != 1) { + printf(" ** %s read error - last part\n", __func__); + return 0; } - memcpy (buf, sec_buf, byte_len); + memcpy(buf, sec_buf, byte_len); } - return (1); + return 1; } |