diff options
| -rw-r--r-- | fs/debugfs/inode.c | 25 |
1 files changed, 20 insertions, 5 deletions
diff --git a/fs/debugfs/inode.c b/fs/debugfs/inode.c index acef14ad53db..c3638ac81cb6 100644 --- a/fs/debugfs/inode.c +++ b/fs/debugfs/inode.c @@ -2,8 +2,9 @@ /* * inode.c - part of debugfs, a tiny little debug file system * - * Copyright (C) 2004 Greg Kroah-Hartman <greg@kroah.com> + * Copyright (C) 2004,2019 Greg Kroah-Hartman <greg@kroah.com> * Copyright (C) 2004 IBM Inc. + * Copyright (C) 2019 Linux Foundation <gregkh@linuxfoundation.org> * * debugfs is for people to use instead of /proc or /sys. * See ./Documentation/core-api/kernel-api.rst for more details. @@ -292,8 +293,10 @@ static struct dentry *start_creating(const char *name, struct dentry *parent) error = simple_pin_fs(&debug_fs_type, &debugfs_mount, &debugfs_mount_count); - if (error) + if (error) { + pr_err("Unable to pin filesystem for file '%s'\n", name); return ERR_PTR(error); + } /* If the parent is not specified, we create it in the root. * We need the root dentry to do this, which is in the super @@ -307,6 +310,7 @@ static struct dentry *start_creating(const char *name, struct dentry *parent) dentry = lookup_one_len(name, parent, strlen(name)); if (!IS_ERR(dentry) && d_really_is_positive(dentry)) { dput(dentry); + pr_err("File '%s' already present!\n", name); dentry = ERR_PTR(-EEXIST); } @@ -349,8 +353,11 @@ static struct dentry *__debugfs_create_file(const char *name, umode_t mode, return dentry; inode = debugfs_get_inode(dentry->d_sb); - if (unlikely(!inode)) + if (unlikely(!inode)) { + pr_err("out of free dentries, can not create file '%s'\n", + name); return failed_creating(dentry); + } inode->i_mode = mode; inode->i_private = data; @@ -511,8 +518,11 @@ struct dentry *debugfs_create_dir(const char *name, struct dentry *parent) return dentry; inode = debugfs_get_inode(dentry->d_sb); - if (unlikely(!inode)) + if (unlikely(!inode)) { + pr_err("out of free dentries, can not create directory '%s'\n", + name); return failed_creating(dentry); + } inode->i_mode = S_IFDIR | S_IRWXU | S_IRUGO | S_IXUGO; inode->i_op = &simple_dir_inode_operations; @@ -550,8 +560,11 @@ struct dentry *debugfs_create_automount(const char *name, return dentry; inode = debugfs_get_inode(dentry->d_sb); - if (unlikely(!inode)) + if (unlikely(!inode)) { + pr_err("out of free dentries, can not create automount '%s'\n", + name); return failed_creating(dentry); + } make_empty_dir_inode(inode); inode->i_flags |= S_AUTOMOUNT; @@ -606,6 +619,8 @@ struct dentry *debugfs_create_symlink(const char *name, struct dentry *parent, inode = debugfs_get_inode(dentry->d_sb); if (unlikely(!inode)) { + pr_err("out of free dentries, can not create symlink '%s'\n", + name); kfree(link); return failed_creating(dentry); } |