From 6fa5c828c7fb6beef7035864bd2b18e7386fbdd5 Mon Sep 17 00:00:00 2001 From: Maneesh Soni Date: Tue, 31 May 2005 10:38:12 +0530 Subject: [PATCH] sysfs-iattr: attach sysfs_dirent before new inode o The following patch makes sure to attach sysfs_dirent to the dentry before allocation a new inode through sysfs_create(). This change is done as preparatory work for implementing ->i_op->setattr() functionality for sysfs objects. Signed-off-by: Maneesh Soni Signed-off-by: Greg Kroah-Hartman --- fs/sysfs/dir.c | 25 +++++++++++++++---------- 1 file changed, 15 insertions(+), 10 deletions(-) (limited to 'fs/sysfs/dir.c') diff --git a/fs/sysfs/dir.c b/fs/sysfs/dir.c index fe198210bc2d..5cf3270014c0 100644 --- a/fs/sysfs/dir.c +++ b/fs/sysfs/dir.c @@ -101,18 +101,19 @@ static int create_dir(struct kobject * k, struct dentry * p, down(&p->d_inode->i_sem); *d = sysfs_get_dentry(p,n); if (!IS_ERR(*d)) { - error = sysfs_create(*d, mode, init_dir); + error = sysfs_make_dirent(p->d_fsdata, *d, k, mode, SYSFS_DIR); if (!error) { - error = sysfs_make_dirent(p->d_fsdata, *d, k, mode, - SYSFS_DIR); + error = sysfs_create(*d, mode, init_dir); if (!error) { p->d_inode->i_nlink++; (*d)->d_op = &sysfs_dentry_ops; d_rehash(*d); } } - if (error && (error != -EEXIST)) + if (error && (error != -EEXIST)) { + sysfs_put((*d)->d_fsdata); d_drop(*d); + } dput(*d); } else error = PTR_ERR(*d); @@ -171,17 +172,19 @@ static int sysfs_attach_attr(struct sysfs_dirent * sd, struct dentry * dentry) init = init_file; } + dentry->d_fsdata = sysfs_get(sd); + sd->s_dentry = dentry; error = sysfs_create(dentry, (attr->mode & S_IALLUGO) | S_IFREG, init); - if (error) + if (error) { + sysfs_put(sd); return error; + } if (bin_attr) { dentry->d_inode->i_size = bin_attr->size; dentry->d_inode->i_fop = &bin_fops; } dentry->d_op = &sysfs_dentry_ops; - dentry->d_fsdata = sysfs_get(sd); - sd->s_dentry = dentry; d_rehash(dentry); return 0; @@ -191,13 +194,15 @@ static int sysfs_attach_link(struct sysfs_dirent * sd, struct dentry * dentry) { int err = 0; + dentry->d_fsdata = sysfs_get(sd); + sd->s_dentry = dentry; err = sysfs_create(dentry, S_IFLNK|S_IRWXUGO, init_symlink); if (!err) { dentry->d_op = &sysfs_dentry_ops; - dentry->d_fsdata = sysfs_get(sd); - sd->s_dentry = dentry; d_rehash(dentry); - } + } else + sysfs_put(sd); + return err; } -- cgit v1.2.1 From 988d186de5b6966a71a8cc52e6cb4895fd2f7799 Mon Sep 17 00:00:00 2001 From: Maneesh Soni Date: Tue, 31 May 2005 10:39:14 +0530 Subject: [PATCH] sysfs-iattr: add sysfs_setattr o This adds ->i_op->setattr VFS method for sysfs inodes. The changed attribues are saved in the persistent sysfs_dirent structure as a pointer to struct iattr. The struct iattr is allocated only for those sysfs_dirent's for which default attributes are getting changed. Thanks to Jon Smirl for this suggestion. Signed-off-by: Maneesh Soni Signed-off-by: Greg Kroah-Hartman --- fs/sysfs/dir.c | 1 + 1 file changed, 1 insertion(+) (limited to 'fs/sysfs/dir.c') diff --git a/fs/sysfs/dir.c b/fs/sysfs/dir.c index 5cf3270014c0..37d7a6875d86 100644 --- a/fs/sysfs/dir.c +++ b/fs/sysfs/dir.c @@ -233,6 +233,7 @@ static struct dentry * sysfs_lookup(struct inode *dir, struct dentry *dentry, struct inode_operations sysfs_dir_inode_operations = { .lookup = sysfs_lookup, + .setattr = sysfs_setattr, }; static void remove_dir(struct dentry * d) -- cgit v1.2.1