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author | Jiri Kosina <jkosina@suse.cz> | 2010-08-11 09:36:51 +0200 |
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committer | Jiri Kosina <jkosina@suse.cz> | 2010-08-11 09:36:51 +0200 |
commit | 6396fc3b3ff3f6b942992b653a62df11dcef9bea (patch) | |
tree | db3c7cbe833b43c653adc99f70941431c5ff7c4e /fs/jfs | |
parent | 4785879e4d340e24e54f6de2ccfc42728b912808 (diff) | |
parent | 3d30701b58970425e1d45994d6cb82f828924fdd (diff) | |
download | kernel_samsung_aries-6396fc3b3ff3f6b942992b653a62df11dcef9bea.zip kernel_samsung_aries-6396fc3b3ff3f6b942992b653a62df11dcef9bea.tar.gz kernel_samsung_aries-6396fc3b3ff3f6b942992b653a62df11dcef9bea.tar.bz2 |
Merge branch 'master' into for-next
Conflicts:
fs/exofs/inode.c
Diffstat (limited to 'fs/jfs')
-rw-r--r-- | fs/jfs/file.c | 14 | ||||
-rw-r--r-- | fs/jfs/inode.c | 63 | ||||
-rw-r--r-- | fs/jfs/jfs_inode.h | 2 | ||||
-rw-r--r-- | fs/jfs/super.c | 8 | ||||
-rw-r--r-- | fs/jfs/xattr.c | 87 |
5 files changed, 95 insertions, 79 deletions
diff --git a/fs/jfs/file.c b/fs/jfs/file.c index 127263c..c5ce6c1 100644 --- a/fs/jfs/file.c +++ b/fs/jfs/file.c @@ -17,6 +17,7 @@ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ +#include <linux/mm.h> #include <linux/fs.h> #include <linux/quotaops.h> #include "jfs_incore.h" @@ -107,11 +108,18 @@ int jfs_setattr(struct dentry *dentry, struct iattr *iattr) return rc; } - rc = inode_setattr(inode, iattr); + if ((iattr->ia_valid & ATTR_SIZE) && + iattr->ia_size != i_size_read(inode)) { + rc = vmtruncate(inode, iattr->ia_size); + if (rc) + return rc; + } - if (!rc && (iattr->ia_valid & ATTR_MODE)) - rc = jfs_acl_chmod(inode); + setattr_copy(inode, iattr); + mark_inode_dirty(inode); + if (iattr->ia_valid & ATTR_MODE) + rc = jfs_acl_chmod(inode); return rc; } diff --git a/fs/jfs/inode.c b/fs/jfs/inode.c index ed9ba6f..9978803 100644 --- a/fs/jfs/inode.c +++ b/fs/jfs/inode.c @@ -145,31 +145,32 @@ int jfs_write_inode(struct inode *inode, struct writeback_control *wbc) return 0; } -void jfs_delete_inode(struct inode *inode) +void jfs_evict_inode(struct inode *inode) { - jfs_info("In jfs_delete_inode, inode = 0x%p", inode); + jfs_info("In jfs_evict_inode, inode = 0x%p", inode); - if (!is_bad_inode(inode)) + if (!inode->i_nlink && !is_bad_inode(inode)) { dquot_initialize(inode); - if (!is_bad_inode(inode) && - (JFS_IP(inode)->fileset == FILESYSTEM_I)) { - truncate_inode_pages(&inode->i_data, 0); + if (JFS_IP(inode)->fileset == FILESYSTEM_I) { + truncate_inode_pages(&inode->i_data, 0); - if (test_cflag(COMMIT_Freewmap, inode)) - jfs_free_zero_link(inode); + if (test_cflag(COMMIT_Freewmap, inode)) + jfs_free_zero_link(inode); - diFree(inode); + diFree(inode); - /* - * Free the inode from the quota allocation. - */ - dquot_initialize(inode); - dquot_free_inode(inode); - dquot_drop(inode); + /* + * Free the inode from the quota allocation. + */ + dquot_initialize(inode); + dquot_free_inode(inode); + } + } else { + truncate_inode_pages(&inode->i_data, 0); } - - clear_inode(inode); + end_writeback(inode); + dquot_drop(inode); } void jfs_dirty_inode(struct inode *inode) @@ -303,8 +304,17 @@ static int jfs_write_begin(struct file *file, struct address_space *mapping, loff_t pos, unsigned len, unsigned flags, struct page **pagep, void **fsdata) { - return nobh_write_begin(file, mapping, pos, len, flags, pagep, fsdata, + int ret; + + ret = nobh_write_begin(mapping, pos, len, flags, pagep, fsdata, jfs_get_block); + if (unlikely(ret)) { + loff_t isize = mapping->host->i_size; + if (pos + len > isize) + vmtruncate(mapping->host, isize); + } + + return ret; } static sector_t jfs_bmap(struct address_space *mapping, sector_t block) @@ -317,9 +327,24 @@ static ssize_t jfs_direct_IO(int rw, struct kiocb *iocb, { struct file *file = iocb->ki_filp; struct inode *inode = file->f_mapping->host; + ssize_t ret; - return blockdev_direct_IO(rw, iocb, inode, inode->i_sb->s_bdev, iov, + ret = blockdev_direct_IO(rw, iocb, inode, inode->i_sb->s_bdev, iov, offset, nr_segs, jfs_get_block, NULL); + + /* + * In case of error extending write may have instantiated a few + * blocks outside i_size. Trim these off again. + */ + if (unlikely((rw & WRITE) && ret < 0)) { + loff_t isize = i_size_read(inode); + loff_t end = offset + iov_length(iov, nr_segs); + + if (end > isize) + vmtruncate(inode, isize); + } + + return ret; } const struct address_space_operations jfs_aops = { diff --git a/fs/jfs/jfs_inode.h b/fs/jfs/jfs_inode.h index 11042b1..155e91e 100644 --- a/fs/jfs/jfs_inode.h +++ b/fs/jfs/jfs_inode.h @@ -27,7 +27,7 @@ extern long jfs_compat_ioctl(struct file *, unsigned int, unsigned long); extern struct inode *jfs_iget(struct super_block *, unsigned long); extern int jfs_commit_inode(struct inode *, int); extern int jfs_write_inode(struct inode *, struct writeback_control *); -extern void jfs_delete_inode(struct inode *); +extern void jfs_evict_inode(struct inode *); extern void jfs_dirty_inode(struct inode *); extern void jfs_truncate(struct inode *); extern void jfs_truncate_nolock(struct inode *, loff_t); diff --git a/fs/jfs/super.c b/fs/jfs/super.c index b38f96b..ec8c3e4 100644 --- a/fs/jfs/super.c +++ b/fs/jfs/super.c @@ -132,11 +132,6 @@ static void jfs_destroy_inode(struct inode *inode) kmem_cache_free(jfs_inode_cachep, ji); } -static void jfs_clear_inode(struct inode *inode) -{ - dquot_drop(inode); -} - static int jfs_statfs(struct dentry *dentry, struct kstatfs *buf) { struct jfs_sb_info *sbi = JFS_SBI(dentry->d_sb); @@ -765,8 +760,7 @@ static const struct super_operations jfs_super_operations = { .destroy_inode = jfs_destroy_inode, .dirty_inode = jfs_dirty_inode, .write_inode = jfs_write_inode, - .delete_inode = jfs_delete_inode, - .clear_inode = jfs_clear_inode, + .evict_inode = jfs_evict_inode, .put_super = jfs_put_super, .sync_fs = jfs_sync_fs, .freeze_fs = jfs_freeze, diff --git a/fs/jfs/xattr.c b/fs/jfs/xattr.c index fa96bbb..2d7f165 100644 --- a/fs/jfs/xattr.c +++ b/fs/jfs/xattr.c @@ -86,46 +86,25 @@ struct ea_buffer { #define EA_MALLOC 0x0008 +static int is_known_namespace(const char *name) +{ + if (strncmp(name, XATTR_SYSTEM_PREFIX, XATTR_SYSTEM_PREFIX_LEN) && + strncmp(name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN) && + strncmp(name, XATTR_SECURITY_PREFIX, XATTR_SECURITY_PREFIX_LEN) && + strncmp(name, XATTR_TRUSTED_PREFIX, XATTR_TRUSTED_PREFIX_LEN)) + return false; + + return true; +} + /* * These three routines are used to recognize on-disk extended attributes * that are in a recognized namespace. If the attribute is not recognized, * "os2." is prepended to the name */ -static inline int is_os2_xattr(struct jfs_ea *ea) +static int is_os2_xattr(struct jfs_ea *ea) { - /* - * Check for "system." - */ - if ((ea->namelen >= XATTR_SYSTEM_PREFIX_LEN) && - !strncmp(ea->name, XATTR_SYSTEM_PREFIX, XATTR_SYSTEM_PREFIX_LEN)) - return false; - /* - * Check for "user." - */ - if ((ea->namelen >= XATTR_USER_PREFIX_LEN) && - !strncmp(ea->name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN)) - return false; - /* - * Check for "security." - */ - if ((ea->namelen >= XATTR_SECURITY_PREFIX_LEN) && - !strncmp(ea->name, XATTR_SECURITY_PREFIX, - XATTR_SECURITY_PREFIX_LEN)) - return false; - /* - * Check for "trusted." - */ - if ((ea->namelen >= XATTR_TRUSTED_PREFIX_LEN) && - !strncmp(ea->name, XATTR_TRUSTED_PREFIX, XATTR_TRUSTED_PREFIX_LEN)) - return false; - /* - * Add any other valid namespace prefixes here - */ - - /* - * We assume it's OS/2's flat namespace - */ - return true; + return !is_known_namespace(ea->name); } static inline int name_size(struct jfs_ea *ea) @@ -764,13 +743,23 @@ static int can_set_xattr(struct inode *inode, const char *name, if (!strncmp(name, XATTR_SYSTEM_PREFIX, XATTR_SYSTEM_PREFIX_LEN)) return can_set_system_xattr(inode, name, value, value_len); + if (!strncmp(name, XATTR_OS2_PREFIX, XATTR_OS2_PREFIX_LEN)) { + /* + * This makes sure that we aren't trying to set an + * attribute in a different namespace by prefixing it + * with "os2." + */ + if (is_known_namespace(name + XATTR_OS2_PREFIX_LEN)) + return -EOPNOTSUPP; + return 0; + } + /* * Don't allow setting an attribute in an unknown namespace. */ if (strncmp(name, XATTR_TRUSTED_PREFIX, XATTR_TRUSTED_PREFIX_LEN) && strncmp(name, XATTR_SECURITY_PREFIX, XATTR_SECURITY_PREFIX_LEN) && - strncmp(name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN) && - strncmp(name, XATTR_OS2_PREFIX, XATTR_OS2_PREFIX_LEN)) + strncmp(name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN)) return -EOPNOTSUPP; return 0; @@ -952,19 +941,8 @@ ssize_t __jfs_getxattr(struct inode *inode, const char *name, void *data, int xattr_size; ssize_t size; int namelen = strlen(name); - char *os2name = NULL; char *value; - if (strncmp(name, XATTR_OS2_PREFIX, XATTR_OS2_PREFIX_LEN) == 0) { - os2name = kmalloc(namelen - XATTR_OS2_PREFIX_LEN + 1, - GFP_KERNEL); - if (!os2name) - return -ENOMEM; - strcpy(os2name, name + XATTR_OS2_PREFIX_LEN); - name = os2name; - namelen -= XATTR_OS2_PREFIX_LEN; - } - down_read(&JFS_IP(inode)->xattr_sem); xattr_size = ea_get(inode, &ea_buf, 0); @@ -1002,8 +980,6 @@ ssize_t __jfs_getxattr(struct inode *inode, const char *name, void *data, out: up_read(&JFS_IP(inode)->xattr_sem); - kfree(os2name); - return size; } @@ -1012,6 +988,19 @@ ssize_t jfs_getxattr(struct dentry *dentry, const char *name, void *data, { int err; + if (strncmp(name, XATTR_OS2_PREFIX, XATTR_OS2_PREFIX_LEN) == 0) { + /* + * skip past "os2." prefix + */ + name += XATTR_OS2_PREFIX_LEN; + /* + * Don't allow retrieving properly prefixed attributes + * by prepending them with "os2." + */ + if (is_known_namespace(name)) + return -EOPNOTSUPP; + } + err = __jfs_getxattr(dentry->d_inode, name, data, buf_size); return err; |