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Subject[PATCH RFC 5/5] UBIFS: add ubifs_err() to print error reason
Date
From: Subodh Nijsure <snijsure@grid-net.com>

This patch add ubifs_err() output to some error pathes to tell the user what's
going on.

Signed-off-by: Subodh Nijsure <snijsure@grid-net.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
---
fs/ubifs/dir.c | 20 ++++++++++++++++----
fs/ubifs/xattr.c | 12 ++++++++++--
2 files changed, 26 insertions(+), 6 deletions(-)

diff --git a/fs/ubifs/dir.c b/fs/ubifs/dir.c
index 6aa31b5..d0dd7a9 100644
--- a/fs/ubifs/dir.c
+++ b/fs/ubifs/dir.c
@@ -282,8 +282,11 @@ static int ubifs_create(struct inode *dir, struct dentry *dentry, umode_t mode,
goto out_cancel;

err = ubifs_init_security(dir, inode, &dentry->d_name);
- if (err)
+ if (err) {
+ ubifs_err("cannot initialize extended attribute, error %d",
+ err);
goto out_cancel;
+ }
mutex_unlock(&dir_ui->ui_mutex);

ubifs_release_budget(c, &req);
@@ -748,8 +751,11 @@ static int ubifs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
}

err = ubifs_init_security(dir, inode, &dentry->d_name);
- if (err)
+ if (err) {
+ ubifs_err("cannot initialize extended attribute, error %d",
+ err);
goto out_cancel;
+ }
mutex_unlock(&dir_ui->ui_mutex);

ubifs_release_budget(c, &req);
@@ -828,8 +834,11 @@ static int ubifs_mknod(struct inode *dir, struct dentry *dentry,
goto out_cancel;

err = ubifs_init_security(dir, inode, &dentry->d_name);
- if (err)
+ if (err) {
+ ubifs_err("cannot initialize extended attribute, error %d",
+ err);
goto out_cancel;
+ }
mutex_unlock(&dir_ui->ui_mutex);

ubifs_release_budget(c, &req);
@@ -908,8 +917,11 @@ static int ubifs_symlink(struct inode *dir, struct dentry *dentry,
goto out_cancel;

err = ubifs_init_security(dir, inode, &dentry->d_name);
- if (err)
+ if (err) {
+ ubifs_err("cannot initialize extended attribute, error %d",
+ err);
goto out_cancel;
+ }
mutex_unlock(&dir_ui->ui_mutex);

ubifs_release_budget(c, &req);
diff --git a/fs/ubifs/xattr.c b/fs/ubifs/xattr.c
index aa81bd3..380fcc9 100644
--- a/fs/ubifs/xattr.c
+++ b/fs/ubifs/xattr.c
@@ -107,8 +107,11 @@ static int create_xattr(struct ubifs_info *c, struct inode *host,
.new_ino_d = ALIGN(size, 8), .dirtied_ino = 1,
.dirtied_ino_d = ALIGN(host_ui->data_len, 8) };

- if (host_ui->xattr_cnt >= MAX_XATTRS_PER_INODE)
+ if (host_ui->xattr_cnt >= MAX_XATTRS_PER_INODE) {
+ ubifs_err("ubifs xattr_cnt %d exceeds MAX_XATTR_PER_NODE (%d)",
+ host_ui->xattr_cnt, MAX_XATTRS_PER_INODE);
return -ENOSPC;
+ }
/*
* Linux limits the maximum size of the extended attribute names list
* to %XATTR_LIST_MAX. This means we should not allow creating more
@@ -116,8 +119,13 @@ static int create_xattr(struct ubifs_info *c, struct inode *host,
* is artificial for UBIFS, though.
*/
if (host_ui->xattr_names + host_ui->xattr_cnt +
- nm->len + 1 > XATTR_LIST_MAX)
+ nm->len + 1 > XATTR_LIST_MAX) {
+ ubifs_err("xattr name list too large %d > %d",
+ host_ui->xattr_names + host_ui->xattr_cnt +
+ nm->len + 1,
+ XATTR_LIST_MAX);
return -ENOSPC;
+ }

err = ubifs_budget_space(c, &req);
if (err)
--
1.7.10.4


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