diff options
| -rw-r--r-- | fs/inode.c | 5 | ||||
| -rw-r--r-- | fs/open.c | 6 | ||||
| -rw-r--r-- | include/linux/fs.h | 6 |
3 files changed, 11 insertions, 6 deletions
@@ -1678,9 +1678,8 @@ EXPORT_SYMBOL(should_remove_suid); * response to write or truncate. Return 0 if nothing has to be changed. * Negative value on error (change should be denied). */ -int file_needs_remove_privs(struct file *file) +int dentry_needs_remove_privs(struct dentry *dentry) { - struct dentry *dentry = file->f_path.dentry; struct inode *inode = d_inode(dentry); int mask = 0; int ret; @@ -1696,7 +1695,7 @@ int file_needs_remove_privs(struct file *file) mask |= ATTR_KILL_PRIV; return mask; } -EXPORT_SYMBOL(file_needs_remove_privs); +EXPORT_SYMBOL(dentry_needs_remove_privs); static int __remove_privs(struct dentry *dentry, int kill) { @@ -51,8 +51,10 @@ int do_truncate(struct dentry *dentry, loff_t length, unsigned int time_attrs, newattrs.ia_valid |= ATTR_FILE; } - /* Remove suid/sgid on truncate too */ - ret = should_remove_suid(dentry); + /* Remove suid, sgid, and file capabilities on truncate too */ + ret = dentry_needs_remove_privs(dentry); + if (ret < 0) + return ret; if (ret) newattrs.ia_valid |= ret | ATTR_FORCE; diff --git a/include/linux/fs.h b/include/linux/fs.h index ee60e8a..1e658b1 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -2554,7 +2554,11 @@ extern struct inode *new_inode(struct super_block *sb); extern void free_inode_nonrcu(struct inode *inode); extern int should_remove_suid(struct dentry *); extern int file_remove_privs(struct file *); -extern int file_needs_remove_privs(struct file *file); +extern int dentry_needs_remove_privs(struct dentry *dentry); +static inline int file_needs_remove_privs(struct file *file) +{ + return dentry_needs_remove_privs(file->f_path.dentry); +} extern void __insert_inode_hash(struct inode *, unsigned long hashval); static inline void insert_inode_hash(struct inode *inode) |
