diff options
Diffstat (limited to 'fs/proc')
| -rw-r--r-- | fs/proc/generic.c | 33 | ||||
| -rw-r--r-- | fs/proc/inode.c | 69 |
2 files changed, 46 insertions, 56 deletions
diff --git a/fs/proc/generic.c b/fs/proc/generic.c index 3c6f5669523..8b406e21a25 100644 --- a/fs/proc/generic.c +++ b/fs/proc/generic.c @@ -388,20 +388,18 @@ struct dentry *proc_lookup_de(struct proc_dir_entry *de, struct inode *dir, lock_kernel(); spin_lock(&proc_subdir_lock); - if (de) { - for (de = de->subdir; de ; de = de->next) { - if (de->namelen != dentry->d_name.len) - continue; - if (!memcmp(dentry->d_name.name, de->name, de->namelen)) { - unsigned int ino; - - ino = de->low_ino; - de_get(de); - spin_unlock(&proc_subdir_lock); - error = -EINVAL; - inode = proc_get_inode(dir->i_sb, ino, de); - goto out_unlock; - } + for (de = de->subdir; de ; de = de->next) { + if (de->namelen != dentry->d_name.len) + continue; + if (!memcmp(dentry->d_name.name, de->name, de->namelen)) { + unsigned int ino; + + ino = de->low_ino; + de_get(de); + spin_unlock(&proc_subdir_lock); + error = -EINVAL; + inode = proc_get_inode(dir->i_sb, ino, de); + goto out_unlock; } } spin_unlock(&proc_subdir_lock); @@ -413,7 +411,8 @@ out_unlock: d_add(dentry, inode); return NULL; } - de_put(de); + if (de) + de_put(de); return ERR_PTR(error); } @@ -443,10 +442,6 @@ int proc_readdir_de(struct proc_dir_entry *de, struct file *filp, void *dirent, lock_kernel(); ino = inode->i_ino; - if (!de) { - ret = -EINVAL; - goto out; - } i = filp->f_pos; switch (i) { case 0: diff --git a/fs/proc/inode.c b/fs/proc/inode.c index 82b3a1b5a70..6f4e8dc97da 100644 --- a/fs/proc/inode.c +++ b/fs/proc/inode.c @@ -25,8 +25,7 @@ struct proc_dir_entry *de_get(struct proc_dir_entry *de) { - if (de) - atomic_inc(&de->count); + atomic_inc(&de->count); return de; } @@ -35,18 +34,16 @@ struct proc_dir_entry *de_get(struct proc_dir_entry *de) */ void de_put(struct proc_dir_entry *de) { - if (de) { - lock_kernel(); - if (!atomic_read(&de->count)) { - printk("de_put: entry %s already free!\n", de->name); - unlock_kernel(); - return; - } - - if (atomic_dec_and_test(&de->count)) - free_proc_entry(de); + lock_kernel(); + if (!atomic_read(&de->count)) { + printk("de_put: entry %s already free!\n", de->name); unlock_kernel(); + return; } + + if (atomic_dec_and_test(&de->count)) + free_proc_entry(de); + unlock_kernel(); } /* @@ -392,7 +389,7 @@ struct inode *proc_get_inode(struct super_block *sb, unsigned int ino, { struct inode * inode; - if (de != NULL && !try_module_get(de->owner)) + if (!try_module_get(de->owner)) goto out_mod; inode = iget_locked(sb, ino); @@ -402,30 +399,29 @@ struct inode *proc_get_inode(struct super_block *sb, unsigned int ino, inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME; PROC_I(inode)->fd = 0; PROC_I(inode)->pde = de; - if (de) { - if (de->mode) { - inode->i_mode = de->mode; - inode->i_uid = de->uid; - inode->i_gid = de->gid; - } - if (de->size) - inode->i_size = de->size; - if (de->nlink) - inode->i_nlink = de->nlink; - if (de->proc_iops) - inode->i_op = de->proc_iops; - if (de->proc_fops) { - if (S_ISREG(inode->i_mode)) { + + if (de->mode) { + inode->i_mode = de->mode; + inode->i_uid = de->uid; + inode->i_gid = de->gid; + } + if (de->size) + inode->i_size = de->size; + if (de->nlink) + inode->i_nlink = de->nlink; + if (de->proc_iops) + inode->i_op = de->proc_iops; + if (de->proc_fops) { + if (S_ISREG(inode->i_mode)) { #ifdef CONFIG_COMPAT - if (!de->proc_fops->compat_ioctl) - inode->i_fop = - &proc_reg_file_ops_no_compat; - else + if (!de->proc_fops->compat_ioctl) + inode->i_fop = + &proc_reg_file_ops_no_compat; + else #endif - inode->i_fop = &proc_reg_file_ops; - } else { - inode->i_fop = de->proc_fops; - } + inode->i_fop = &proc_reg_file_ops; + } else { + inode->i_fop = de->proc_fops; } } unlock_new_inode(inode); @@ -433,8 +429,7 @@ struct inode *proc_get_inode(struct super_block *sb, unsigned int ino, return inode; out_ino: - if (de != NULL) - module_put(de->owner); + module_put(de->owner); out_mod: return NULL; } |