[PATCH v2 01/10] sysfs: explicitly pass size to sysfs_add_bin_file_mode_ns()
From: Thomas Weißschuh <linux@weissschuh.net>
Date: 2024-11-03 17:04:37
Also in:
amd-gfx, dri-devel, linux-alpha, linux-cxl, linux-pci, linux-rdma, linux-scsi, linux-usb, linuxppc-dev, lkml, platform-driver-x86
Subsystem:
driver core, kobjects, debugfs and sysfs, filesystems (vfs and infrastructure), the rest · Maintainers:
Greg Kroah-Hartman, "Rafael J. Wysocki", Danilo Krummrich, Alexander Viro, Christian Brauner, Linus Torvalds
Upcoming changes to the sysfs core require the size of the created file to be overridable by the caller. Add a parameter to enable this. For now keep using attr->size in all cases. Signed-off-by: Thomas Weißschuh <linux@weissschuh.net> --- fs/sysfs/file.c | 8 ++++---- fs/sysfs/group.c | 3 ++- fs/sysfs/sysfs.h | 2 +- 3 files changed, 7 insertions(+), 6 deletions(-)
diff --git a/fs/sysfs/file.c b/fs/sysfs/file.c
index d1995e2d6c943a644ff9f34cf2488864d57daf81..6d39696b43069010b0ad0bdaadcf9002cb70c92c 100644
--- a/fs/sysfs/file.c
+++ b/fs/sysfs/file.c@@ -315,7 +315,7 @@ int sysfs_add_file_mode_ns(struct kernfs_node *parent, } int sysfs_add_bin_file_mode_ns(struct kernfs_node *parent, - const struct bin_attribute *battr, umode_t mode, + const struct bin_attribute *battr, umode_t mode, size_t size, kuid_t uid, kgid_t gid, const void *ns) { const struct attribute *attr = &battr->attr;
@@ -340,7 +340,7 @@ int sysfs_add_bin_file_mode_ns(struct kernfs_node *parent, #endif kn = __kernfs_create_file(parent, attr->name, mode & 0777, uid, gid, - battr->size, ops, (void *)attr, ns, key); + size, ops, (void *)attr, ns, key); if (IS_ERR(kn)) { if (PTR_ERR(kn) == -EEXIST) sysfs_warn_dup(parent, attr->name);
@@ -580,8 +580,8 @@ int sysfs_create_bin_file(struct kobject *kobj, return -EINVAL; kobject_get_ownership(kobj, &uid, &gid); - return sysfs_add_bin_file_mode_ns(kobj->sd, attr, attr->attr.mode, uid, - gid, NULL); + return sysfs_add_bin_file_mode_ns(kobj->sd, attr, attr->attr.mode, + attr->size, uid, gid, NULL); } EXPORT_SYMBOL_GPL(sysfs_create_bin_file);
diff --git a/fs/sysfs/group.c b/fs/sysfs/group.c
index d22ad67a0f3291f4702f494939528d5d13c31fae..45b2e92941da1f49dcc71af3781317c61480c956 100644
--- a/fs/sysfs/group.c
+++ b/fs/sysfs/group.c@@ -87,6 +87,7 @@ static int create_files(struct kernfs_node *parent, struct kobject *kobj, if (grp->bin_attrs) { for (i = 0, bin_attr = grp->bin_attrs; *bin_attr; i++, bin_attr++) { umode_t mode = (*bin_attr)->attr.mode; + size_t size = (*bin_attr)->size; if (update) kernfs_remove_by_name(parent,
@@ -104,7 +105,7 @@ static int create_files(struct kernfs_node *parent, struct kobject *kobj, mode &= SYSFS_PREALLOC | 0664; error = sysfs_add_bin_file_mode_ns(parent, *bin_attr, - mode, uid, gid, + mode, size, uid, gid, NULL); if (error) break;
diff --git a/fs/sysfs/sysfs.h b/fs/sysfs/sysfs.h
index 3f28c9af57562f61a00a47935579f0939cbfd4dc..8e012f25e1c06e802c3138cc2715b46c1f67fa48 100644
--- a/fs/sysfs/sysfs.h
+++ b/fs/sysfs/sysfs.h@@ -31,7 +31,7 @@ int sysfs_add_file_mode_ns(struct kernfs_node *parent, const struct attribute *attr, umode_t amode, kuid_t uid, kgid_t gid, const void *ns); int sysfs_add_bin_file_mode_ns(struct kernfs_node *parent, - const struct bin_attribute *battr, umode_t mode, + const struct bin_attribute *battr, umode_t mode, size_t size, kuid_t uid, kgid_t gid, const void *ns); /*
--
2.47.0