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sysfs: separate out dup filename warning into a separate function
Separate out sysfs_warn_dup() out of sysfs_add_one(). This will help separating out the core sysfs functionalities into kernfs so that it can be used by non-sysfs users too. This doesn't make any functional changes. Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -470,6 +470,23 @@ static char *sysfs_pathname(struct sysfs_dirent *sd, char *path)
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return path;
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}
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void sysfs_warn_dup(struct sysfs_dirent *parent, const char *name)
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{
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char *path;
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path = kzalloc(PATH_MAX, GFP_KERNEL);
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if (path) {
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sysfs_pathname(parent, path);
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strlcat(path, "/", PATH_MAX);
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strlcat(path, name, PATH_MAX);
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}
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WARN(1, KERN_WARNING "sysfs: cannot create duplicate filename '%s'\n",
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path ? path : name);
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kfree(path);
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}
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/**
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* sysfs_add_one - add sysfs_dirent to parent
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* @acxt: addrm context to use
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@ -497,18 +514,9 @@ int sysfs_add_one(struct sysfs_addrm_cxt *acxt, struct sysfs_dirent *sd,
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int ret;
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ret = __sysfs_add_one(acxt, sd, parent_sd);
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if (ret == -EEXIST) {
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char *path = kzalloc(PATH_MAX, GFP_KERNEL);
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WARN(1, KERN_WARNING
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"sysfs: cannot create duplicate filename '%s'\n",
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(path == NULL) ? sd->s_name
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: (sysfs_pathname(parent_sd, path),
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strlcat(path, "/", PATH_MAX),
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strlcat(path, sd->s_name, PATH_MAX),
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path));
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kfree(path);
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}
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if (ret == -EEXIST)
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sysfs_warn_dup(parent_sd, sd->s_name);
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return ret;
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}
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@ -168,6 +168,7 @@ extern const struct inode_operations sysfs_dir_inode_operations;
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struct sysfs_dirent *sysfs_get_active(struct sysfs_dirent *sd);
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void sysfs_put_active(struct sysfs_dirent *sd);
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void sysfs_addrm_start(struct sysfs_addrm_cxt *acxt);
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void sysfs_warn_dup(struct sysfs_dirent *parent, const char *name);
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int __sysfs_add_one(struct sysfs_addrm_cxt *acxt, struct sysfs_dirent *sd,
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struct sysfs_dirent *parent_sd);
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int sysfs_add_one(struct sysfs_addrm_cxt *acxt, struct sysfs_dirent *sd,
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