diff options
Diffstat (limited to 'fs/ext4')
| -rw-r--r-- | fs/ext4/dev.c | 13 |
1 files changed, 6 insertions, 7 deletions
diff --git a/fs/ext4/dev.c b/fs/ext4/dev.c index e0b513a..c77c02c 100644 --- a/fs/ext4/dev.c +++ b/fs/ext4/dev.c @@ -73,6 +73,7 @@ int ext4fs_devread(lbaint_t sector, int byte_offset, int byte_len, char *buf) debug(" <" LBAFU ", %d, %d>\n", sector, byte_offset, byte_len); if (byte_offset != 0) { + int readlen; /* read first part which isn't aligned with start of sector */ if (ext4fs_block_dev_desc-> block_read(ext4fs_block_dev_desc->dev, @@ -81,13 +82,11 @@ int ext4fs_devread(lbaint_t sector, int byte_offset, int byte_len, char *buf) printf(" ** ext2fs_devread() read error **\n"); return 0; } - memcpy(buf, sec_buf + byte_offset, - min(ext4fs_block_dev_desc->blksz - - byte_offset, byte_len)); - buf += min(ext4fs_block_dev_desc->blksz - - byte_offset, byte_len); - byte_len -= min(ext4fs_block_dev_desc->blksz - - byte_offset, byte_len); + readlen = min((int)ext4fs_block_dev_desc->blksz - byte_offset, + byte_len); + memcpy(buf, sec_buf + byte_offset, readlen); + buf += readlen; + byte_len -= readlen; sector++; } |