diff options
Diffstat (limited to 'fs/sysfs/file.c')
-rw-r--r-- | fs/sysfs/file.c | 53 |
1 files changed, 42 insertions, 11 deletions
diff --git a/fs/sysfs/file.c b/fs/sysfs/file.c index e2ce6743113a..69cca0f4ccf3 100644 --- a/fs/sysfs/file.c +++ b/fs/sysfs/file.c @@ -912,14 +912,11 @@ static const struct kernfs_ops sysfs_bin_kfops_rw = { int sysfs_add_file_mode_ns(struct sysfs_dirent *dir_sd, const struct attribute *attr, bool is_bin, - umode_t amode, const void *ns) + umode_t mode, const void *ns) { - umode_t mode = (amode & S_IALLUGO) | S_IFREG; const struct kernfs_ops *ops; - struct sysfs_addrm_cxt acxt; struct sysfs_dirent *sd; loff_t size; - int rc; if (!is_bin) { struct kobject *kobj = dir_sd->priv; @@ -956,14 +953,47 @@ int sysfs_add_file_mode_ns(struct sysfs_dirent *dir_sd, size = battr->size; } - sd = sysfs_new_dirent(attr->name, mode, SYSFS_KOBJ_ATTR); + sd = kernfs_create_file_ns(dir_sd, attr->name, mode, size, + ops, (void *)attr, ns); + if (IS_ERR(sd)) { + if (PTR_ERR(sd) == -EEXIST) + sysfs_warn_dup(dir_sd, attr->name); + return PTR_ERR(sd); + } + return 0; +} + +/** + * kernfs_create_file_ns - create a file + * @parent: directory to create the file in + * @name: name of the file + * @mode: mode of the file + * @size: size of the file + * @ops: kernfs operations for the file + * @priv: private data for the file + * @ns: optional namespace tag of the file + * + * Returns the created node on success, ERR_PTR() value on error. + */ +struct sysfs_dirent *kernfs_create_file_ns(struct sysfs_dirent *parent, + const char *name, + umode_t mode, loff_t size, + const struct kernfs_ops *ops, + void *priv, const void *ns) +{ + struct sysfs_addrm_cxt acxt; + struct sysfs_dirent *sd; + int rc; + + sd = sysfs_new_dirent(name, (mode & S_IALLUGO) | S_IFREG, + SYSFS_KOBJ_ATTR); if (!sd) - return -ENOMEM; + return ERR_PTR(-ENOMEM); sd->s_attr.ops = ops; sd->s_attr.size = size; sd->s_ns = ns; - sd->priv = (void *)attr; + sd->priv = priv; sysfs_dirent_init_lockdep(sd); /* @@ -977,13 +1007,14 @@ int sysfs_add_file_mode_ns(struct sysfs_dirent *dir_sd, sd->s_flags |= SYSFS_FLAG_HAS_MMAP; sysfs_addrm_start(&acxt); - rc = sysfs_add_one(&acxt, sd, dir_sd); + rc = __sysfs_add_one(&acxt, sd, parent); sysfs_addrm_finish(&acxt); - if (rc) + if (rc) { sysfs_put(sd); - - return rc; + return ERR_PTR(rc); + } + return sd; } int sysfs_add_file(struct sysfs_dirent *dir_sd, const struct attribute *attr, |