diff options
author | Paul Mundt <lethal@linux-sh.org> | 2009-09-25 12:15:15 +0900 |
---|---|---|
committer | Paul Mundt <lethal@linux-sh.org> | 2009-09-25 12:15:15 +0900 |
commit | c373ba999103fa794f041eab5bd490714d2dee88 (patch) | |
tree | 8f2b445b1e0af2491c83527967dbcda76054a486 /fs/ecryptfs/read_write.c | |
parent | 6f3529f00a0a9ac06413d18d3926adf099cb59af (diff) | |
parent | 851b147e4411df6a1e7e90e2a609773c277eefd2 (diff) |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Diffstat (limited to 'fs/ecryptfs/read_write.c')
-rw-r--r-- | fs/ecryptfs/read_write.c | 32 |
1 files changed, 12 insertions, 20 deletions
diff --git a/fs/ecryptfs/read_write.c b/fs/ecryptfs/read_write.c index a137c6ea2fe..0cc4fafd655 100644 --- a/fs/ecryptfs/read_write.c +++ b/fs/ecryptfs/read_write.c @@ -34,15 +34,14 @@ * * Write data to the lower file. * - * Returns zero on success; non-zero on error + * Returns bytes written on success; less than zero on error */ int ecryptfs_write_lower(struct inode *ecryptfs_inode, char *data, loff_t offset, size_t size) { struct ecryptfs_inode_info *inode_info; - ssize_t octets_written; mm_segment_t fs_save; - int rc = 0; + ssize_t rc; inode_info = ecryptfs_inode_to_private(ecryptfs_inode); mutex_lock(&inode_info->lower_file_mutex); @@ -50,14 +49,9 @@ int ecryptfs_write_lower(struct inode *ecryptfs_inode, char *data, inode_info->lower_file->f_pos = offset; fs_save = get_fs(); set_fs(get_ds()); - octets_written = vfs_write(inode_info->lower_file, data, size, - &inode_info->lower_file->f_pos); + rc = vfs_write(inode_info->lower_file, data, size, + &inode_info->lower_file->f_pos); set_fs(fs_save); - if (octets_written < 0) { - printk(KERN_ERR "%s: octets_written = [%td]; " - "expected [%td]\n", __func__, octets_written, size); - rc = -EINVAL; - } mutex_unlock(&inode_info->lower_file_mutex); mark_inode_dirty_sync(ecryptfs_inode); return rc; @@ -91,6 +85,8 @@ int ecryptfs_write_lower_page_segment(struct inode *ecryptfs_inode, + offset_in_page); virt = kmap(page_for_lower); rc = ecryptfs_write_lower(ecryptfs_inode, virt, offset, size); + if (rc > 0) + rc = 0; kunmap(page_for_lower); return rc; } @@ -229,30 +225,24 @@ out: * Read @size bytes of data at byte offset @offset from the lower * inode into memory location @data. * - * Returns zero on success; non-zero on error + * Returns bytes read on success; 0 on EOF; less than zero on error */ int ecryptfs_read_lower(char *data, loff_t offset, size_t size, struct inode *ecryptfs_inode) { struct ecryptfs_inode_info *inode_info = ecryptfs_inode_to_private(ecryptfs_inode); - ssize_t octets_read; mm_segment_t fs_save; - int rc = 0; + ssize_t rc; mutex_lock(&inode_info->lower_file_mutex); BUG_ON(!inode_info->lower_file); inode_info->lower_file->f_pos = offset; fs_save = get_fs(); set_fs(get_ds()); - octets_read = vfs_read(inode_info->lower_file, data, size, - &inode_info->lower_file->f_pos); + rc = vfs_read(inode_info->lower_file, data, size, + &inode_info->lower_file->f_pos); set_fs(fs_save); - if (octets_read < 0) { - printk(KERN_ERR "%s: octets_read = [%td]; " - "expected [%td]\n", __func__, octets_read, size); - rc = -EINVAL; - } mutex_unlock(&inode_info->lower_file_mutex); return rc; } @@ -284,6 +274,8 @@ int ecryptfs_read_lower_page_segment(struct page *page_for_ecryptfs, offset = ((((loff_t)page_index) << PAGE_CACHE_SHIFT) + offset_in_page); virt = kmap(page_for_ecryptfs); rc = ecryptfs_read_lower(virt, offset, size, ecryptfs_inode); + if (rc > 0) + rc = 0; kunmap(page_for_ecryptfs); flush_dcache_page(page_for_ecryptfs); return rc; |