diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2016-10-11 03:11:50 +0300 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-10-11 03:11:50 +0300 |
commit | 97d2116708ca0fd6ad8b00811ee4349b7e19e96f (patch) | |
tree | 81f73fc1a6daee60737b591cf1be73cc4f79de37 /fs/ecryptfs | |
parent | 30066ce675d3af350bc5a53858991c0b518dda00 (diff) | |
parent | fd50ecaddf8372a1d96e0daeaac0f93cf04e4d42 (diff) | |
download | linux-97d2116708ca0fd6ad8b00811ee4349b7e19e96f.tar.xz |
Merge branch 'work.xattr' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull vfs xattr updates from Al Viro:
"xattr stuff from Andreas
This completes the switch to xattr_handler ->get()/->set() from
->getxattr/->setxattr/->removexattr"
* 'work.xattr' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
vfs: Remove {get,set,remove}xattr inode operations
xattr: Stop calling {get,set,remove}xattr inode operations
vfs: Check for the IOP_XATTR flag in listxattr
xattr: Add __vfs_{get,set,remove}xattr helpers
libfs: Use IOP_XATTR flag for empty directory handling
vfs: Use IOP_XATTR flag for bad-inode handling
vfs: Add IOP_XATTR inode operations flag
vfs: Move xattr_resolve_name to the front of fs/xattr.c
ecryptfs: Switch to generic xattr handlers
sockfs: Get rid of getxattr iop
sockfs: getxattr: Fail with -EOPNOTSUPP for invalid attribute names
kernfs: Switch to generic xattr handlers
hfs: Switch to generic xattr handlers
jffs2: Remove jffs2_{get,set,remove}xattr macros
xattr: Remove unnecessary NULL attribute name check
Diffstat (limited to 'fs/ecryptfs')
-rw-r--r-- | fs/ecryptfs/ecryptfs_kernel.h | 2 | ||||
-rw-r--r-- | fs/ecryptfs/inode.c | 67 | ||||
-rw-r--r-- | fs/ecryptfs/main.c | 1 | ||||
-rw-r--r-- | fs/ecryptfs/mmap.c | 13 |
4 files changed, 54 insertions, 29 deletions
diff --git a/fs/ecryptfs/ecryptfs_kernel.h b/fs/ecryptfs/ecryptfs_kernel.h index 4ba1547bb9ad..599a29237cfe 100644 --- a/fs/ecryptfs/ecryptfs_kernel.h +++ b/fs/ecryptfs/ecryptfs_kernel.h @@ -715,4 +715,6 @@ int ecryptfs_set_f_namelen(long *namelen, long lower_namelen, int ecryptfs_derive_iv(char *iv, struct ecryptfs_crypt_stat *crypt_stat, loff_t offset); +extern const struct xattr_handler *ecryptfs_xattr_handlers[]; + #endif /* #ifndef ECRYPTFS_KERNEL_H */ diff --git a/fs/ecryptfs/inode.c b/fs/ecryptfs/inode.c index 5ffba186f352..ddccec3124d7 100644 --- a/fs/ecryptfs/inode.c +++ b/fs/ecryptfs/inode.c @@ -1005,15 +1005,14 @@ ecryptfs_setxattr(struct dentry *dentry, struct inode *inode, const char *name, const void *value, size_t size, int flags) { - int rc = 0; + int rc; struct dentry *lower_dentry; lower_dentry = ecryptfs_dentry_to_lower(dentry); - if (!d_inode(lower_dentry)->i_op->setxattr) { + if (!(d_inode(lower_dentry)->i_opflags & IOP_XATTR)) { rc = -EOPNOTSUPP; goto out; } - rc = vfs_setxattr(lower_dentry, name, value, size, flags); if (!rc && inode) fsstack_copy_attr_all(inode, d_inode(lower_dentry)); @@ -1025,15 +1024,14 @@ ssize_t ecryptfs_getxattr_lower(struct dentry *lower_dentry, struct inode *lower_inode, const char *name, void *value, size_t size) { - int rc = 0; + int rc; - if (!lower_inode->i_op->getxattr) { + if (!(lower_inode->i_opflags & IOP_XATTR)) { rc = -EOPNOTSUPP; goto out; } inode_lock(lower_inode); - rc = lower_inode->i_op->getxattr(lower_dentry, lower_inode, - name, value, size); + rc = __vfs_getxattr(lower_dentry, lower_inode, name, value, size); inode_unlock(lower_inode); out: return rc; @@ -1066,19 +1064,22 @@ out: return rc; } -static int ecryptfs_removexattr(struct dentry *dentry, const char *name) +static int ecryptfs_removexattr(struct dentry *dentry, struct inode *inode, + const char *name) { - int rc = 0; + int rc; struct dentry *lower_dentry; + struct inode *lower_inode; lower_dentry = ecryptfs_dentry_to_lower(dentry); - if (!d_inode(lower_dentry)->i_op->removexattr) { + lower_inode = ecryptfs_inode_to_lower(inode); + if (!(lower_inode->i_opflags & IOP_XATTR)) { rc = -EOPNOTSUPP; goto out; } - inode_lock(d_inode(lower_dentry)); - rc = d_inode(lower_dentry)->i_op->removexattr(lower_dentry, name); - inode_unlock(d_inode(lower_dentry)); + inode_lock(lower_inode); + rc = __vfs_removexattr(lower_dentry, name); + inode_unlock(lower_inode); out: return rc; } @@ -1089,10 +1090,7 @@ const struct inode_operations ecryptfs_symlink_iops = { .permission = ecryptfs_permission, .setattr = ecryptfs_setattr, .getattr = ecryptfs_getattr_link, - .setxattr = ecryptfs_setxattr, - .getxattr = ecryptfs_getxattr, .listxattr = ecryptfs_listxattr, - .removexattr = ecryptfs_removexattr }; const struct inode_operations ecryptfs_dir_iops = { @@ -1107,18 +1105,43 @@ const struct inode_operations ecryptfs_dir_iops = { .rename = ecryptfs_rename, .permission = ecryptfs_permission, .setattr = ecryptfs_setattr, - .setxattr = ecryptfs_setxattr, - .getxattr = ecryptfs_getxattr, .listxattr = ecryptfs_listxattr, - .removexattr = ecryptfs_removexattr }; const struct inode_operations ecryptfs_main_iops = { .permission = ecryptfs_permission, .setattr = ecryptfs_setattr, .getattr = ecryptfs_getattr, - .setxattr = ecryptfs_setxattr, - .getxattr = ecryptfs_getxattr, .listxattr = ecryptfs_listxattr, - .removexattr = ecryptfs_removexattr +}; + +static int ecryptfs_xattr_get(const struct xattr_handler *handler, + struct dentry *dentry, struct inode *inode, + const char *name, void *buffer, size_t size) +{ + return ecryptfs_getxattr(dentry, inode, name, buffer, size); +} + +static int ecryptfs_xattr_set(const struct xattr_handler *handler, + struct dentry *dentry, struct inode *inode, + const char *name, const void *value, size_t size, + int flags) +{ + if (value) + return ecryptfs_setxattr(dentry, inode, name, value, size, flags); + else { + BUG_ON(flags != XATTR_REPLACE); + return ecryptfs_removexattr(dentry, inode, name); + } +} + +const struct xattr_handler ecryptfs_xattr_handler = { + .prefix = "", /* match anything */ + .get = ecryptfs_xattr_get, + .set = ecryptfs_xattr_set, +}; + +const struct xattr_handler *ecryptfs_xattr_handlers[] = { + &ecryptfs_xattr_handler, + NULL }; diff --git a/fs/ecryptfs/main.c b/fs/ecryptfs/main.c index 612004495141..151872dcc1f4 100644 --- a/fs/ecryptfs/main.c +++ b/fs/ecryptfs/main.c @@ -529,6 +529,7 @@ static struct dentry *ecryptfs_mount(struct file_system_type *fs_type, int flags /* ->kill_sb() will take care of sbi after that point */ sbi = NULL; s->s_op = &ecryptfs_sops; + s->s_xattr = ecryptfs_xattr_handlers; s->s_d_op = &ecryptfs_dops; err = "Reading sb failed"; diff --git a/fs/ecryptfs/mmap.c b/fs/ecryptfs/mmap.c index 9c3437c8a5b1..1f0c471b4ba3 100644 --- a/fs/ecryptfs/mmap.c +++ b/fs/ecryptfs/mmap.c @@ -32,6 +32,7 @@ #include <linux/file.h> #include <linux/scatterlist.h> #include <linux/slab.h> +#include <linux/xattr.h> #include <asm/unaligned.h> #include "ecryptfs_kernel.h" @@ -422,7 +423,7 @@ static int ecryptfs_write_inode_size_to_xattr(struct inode *ecryptfs_inode) struct inode *lower_inode = d_inode(lower_dentry); int rc; - if (!lower_inode->i_op->getxattr || !lower_inode->i_op->setxattr) { + if (!(lower_inode->i_opflags & IOP_XATTR)) { printk(KERN_WARNING "No support for setting xattr in lower filesystem\n"); rc = -ENOSYS; @@ -436,15 +437,13 @@ static int ecryptfs_write_inode_size_to_xattr(struct inode *ecryptfs_inode) goto out; } inode_lock(lower_inode); - size = lower_inode->i_op->getxattr(lower_dentry, lower_inode, - ECRYPTFS_XATTR_NAME, - xattr_virt, PAGE_SIZE); + size = __vfs_getxattr(lower_dentry, lower_inode, ECRYPTFS_XATTR_NAME, + xattr_virt, PAGE_SIZE); if (size < 0) size = 8; put_unaligned_be64(i_size_read(ecryptfs_inode), xattr_virt); - rc = lower_inode->i_op->setxattr(lower_dentry, lower_inode, - ECRYPTFS_XATTR_NAME, - xattr_virt, size, 0); + rc = __vfs_setxattr(lower_dentry, lower_inode, ECRYPTFS_XATTR_NAME, + xattr_virt, size, 0); inode_unlock(lower_inode); if (rc) printk(KERN_ERR "Error whilst attempting to write inode size " |