diff options
| -rw-r--r-- | fs/ext4/ext4_common.c | 6 | ||||
| -rw-r--r-- | fs/ext4/ext4_write.c | 11 |
2 files changed, 13 insertions, 4 deletions
diff --git a/fs/ext4/ext4_common.c b/fs/ext4/ext4_common.c index 5e874afc70..5f21dc7948 100644 --- a/fs/ext4/ext4_common.c +++ b/fs/ext4/ext4_common.c @@ -534,7 +534,7 @@ static int search_dir(struct ext2_inode *parent_inode, char *dirname) /* get the block no allocated to a file */ for (blk_idx = 0; blk_idx < directory_blocks; blk_idx++) { blknr = read_allocated_block(parent_inode, blk_idx); - if (blknr == 0) + if (blknr <= 0) goto fail; /* read the directory block */ @@ -828,7 +828,7 @@ int ext4fs_filename_unlink(char *filename) /* read the block no allocated to a file */ for (blk_idx = 0; blk_idx < directory_blocks; blk_idx++) { blknr = read_allocated_block(g_parent_inode, blk_idx); - if (blknr == 0) + if (blknr <= 0) break; inodeno = unlink_filename(filename, blknr); if (inodeno != -1) @@ -1590,7 +1590,7 @@ long int read_allocated_block(struct ext2_inode *inode, int fileblock) if (status == 0) { printf("** SI ext2fs read block (indir 1)" "failed. **\n"); - return 0; + return -1; } ext4fs_indir1_blkno = le32_to_cpu(inode->b.blocks. diff --git a/fs/ext4/ext4_write.c b/fs/ext4/ext4_write.c index 913c46e89f..e4f0905876 100644 --- a/fs/ext4/ext4_write.c +++ b/fs/ext4/ext4_write.c @@ -461,6 +461,10 @@ static int ext4fs_delete_file(int inodeno) /* release data blocks */ for (i = 0; i < no_blocks; i++) { blknr = read_allocated_block(&inode, i); + if (blknr == 0) + continue; + if (blknr < 0) + goto fail; bg_idx = blknr / blk_per_grp; if (fs->blksz == 1024) { remainder = blknr % blk_per_grp; @@ -718,6 +722,10 @@ void ext4fs_deinit(void) fs->curr_blkno = 0; } +/* + * Write data to filesystem blocks. Uses same optimization for + * contigous sectors as ext4fs_read_file + */ static int ext4fs_write_file(struct ext2_inode *file_inode, int pos, unsigned int len, char *buf) { @@ -744,7 +752,7 @@ static int ext4fs_write_file(struct ext2_inode *file_inode, int blockend = fs->blksz; int skipfirst = 0; blknr = read_allocated_block(file_inode, i); - if (blknr < 0) + if (blknr <= 0) return -1; blknr = blknr << log2_fs_blocksize; @@ -910,6 +918,7 @@ int ext4fs_write(const char *fname, unsigned char *buffer, /* copy the file content into data blocks */ if (ext4fs_write_file(file_inode, 0, sizebytes, (char *)buffer) == -1) { printf("Error in copying content\n"); + /* FIXME: Deallocate data blocks */ goto fail; } ibmap_idx = parent_inodeno / le32_to_cpu(ext4fs_root->sblock.inodes_per_group); |