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author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 22:20:36 (GMT) |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 22:20:36 (GMT) |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /fs/sysfs/group.c | |
download | linux-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.xz |
Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'fs/sysfs/group.c')
-rw-r--r-- | fs/sysfs/group.c | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/fs/sysfs/group.c b/fs/sysfs/group.c new file mode 100644 index 0000000..f11ac5e --- /dev/null +++ b/fs/sysfs/group.c @@ -0,0 +1,84 @@ +/* + * fs/sysfs/group.c - Operations for adding/removing multiple files at once. + * + * Copyright (c) 2003 Patrick Mochel + * Copyright (c) 2003 Open Source Development Lab + * + * This file is released undert the GPL v2. + * + */ + +#include <linux/kobject.h> +#include <linux/module.h> +#include <linux/dcache.h> +#include <linux/err.h> +#include "sysfs.h" + + +static void remove_files(struct dentry * dir, + const struct attribute_group * grp) +{ + struct attribute *const* attr; + + for (attr = grp->attrs; *attr; attr++) + sysfs_hash_and_remove(dir,(*attr)->name); +} + +static int create_files(struct dentry * dir, + const struct attribute_group * grp) +{ + struct attribute *const* attr; + int error = 0; + + for (attr = grp->attrs; *attr && !error; attr++) { + error = sysfs_add_file(dir, *attr, SYSFS_KOBJ_ATTR); + } + if (error) + remove_files(dir,grp); + return error; +} + + +int sysfs_create_group(struct kobject * kobj, + const struct attribute_group * grp) +{ + struct dentry * dir; + int error; + + BUG_ON(!kobj || !kobj->dentry); + + if (grp->name) { + error = sysfs_create_subdir(kobj,grp->name,&dir); + if (error) + return error; + } else + dir = kobj->dentry; + dir = dget(dir); + if ((error = create_files(dir,grp))) { + if (grp->name) + sysfs_remove_subdir(dir); + } + dput(dir); + return error; +} + +void sysfs_remove_group(struct kobject * kobj, + const struct attribute_group * grp) +{ + struct dentry * dir; + + if (grp->name) + dir = sysfs_get_dentry(kobj->dentry,grp->name); + else + dir = dget(kobj->dentry); + + remove_files(dir,grp); + if (grp->name) + sysfs_remove_subdir(dir); + /* release the ref. taken in this routine */ + dput(dir); +} + + +EXPORT_SYMBOL_GPL(sysfs_create_group); +EXPORT_SYMBOL_GPL(sysfs_remove_group); |