/* * FUSE: Filesystem in Userspace * Copyright (C) 2016 Canonical Ltd. * * This program can be distributed under the terms of the GNU GPL. * See the file COPYING. */ #include "fuse_i.h" #include #include struct posix_acl *fuse_get_acl(struct inode *inode, int type) { struct fuse_conn *fc = get_fuse_conn(inode); int size; const char *name; void *value = NULL; struct posix_acl *acl; if (!fc->posix_acl || fc->no_getxattr) return NULL; if (type == ACL_TYPE_ACCESS) name = XATTR_NAME_POSIX_ACL_ACCESS; else if (type == ACL_TYPE_DEFAULT) name = XATTR_NAME_POSIX_ACL_DEFAULT; else return ERR_PTR(-EOPNOTSUPP); value = kmalloc(PAGE_SIZE, GFP_KERNEL); if (!value) return ERR_PTR(-ENOMEM); size = fuse_getxattr(inode, name, value, PAGE_SIZE); if (size > 0) acl = posix_acl_from_xattr(&init_user_ns, value, size); else if ((size == 0) || (size == -ENODATA) || (size == -EOPNOTSUPP && fc->no_getxattr)) acl = NULL; else if (size == -ERANGE) acl = ERR_PTR(-E2BIG); else acl = ERR_PTR(size); kfree(value); return acl; } int fuse_set_acl(struct inode *inode, struct posix_acl *acl, int type) { struct fuse_conn *fc = get_fuse_conn(inode); const char *name; int ret; if (!fc->posix_acl || fc->no_setxattr) return -EOPNOTSUPP; if (type == ACL_TYPE_ACCESS) name = XATTR_NAME_POSIX_ACL_ACCESS; else if (type == ACL_TYPE_DEFAULT) name = XATTR_NAME_POSIX_ACL_DEFAULT; else return -EINVAL; if (acl) { /* * Fuse userspace is responsible for updating access * permissions in the inode, if needed. fuse_setxattr * invalidates the inode attributes, which will force * them to be refreshed the next time they are used, * and it also updates i_ctime. */ size_t size = posix_acl_xattr_size(acl->a_count); void *value; if (size > PAGE_SIZE) return -E2BIG; value = kmalloc(size, GFP_KERNEL); if (!value) return -ENOMEM; ret = posix_acl_to_xattr(&init_user_ns, acl, value, size); if (ret < 0) { kfree(value); return ret; } ret = fuse_setxattr(inode, name, value, size, 0); kfree(value); } else { ret = fuse_removexattr(inode, name); } forget_all_cached_acls(inode); fuse_invalidate_attr(inode); return ret; } fca7035a12f1201277d33e8fc87c9d60c9a'/>
path: root/tools/lib/api/fs/fs.c
diff options
context:
space:
mode:
authorVenkat Reddy Talla <vreddytalla@nvidia.com>2016-11-17 23:24:35 +0530
committerMark Brown <broonie@kernel.org>2016-11-23 16:27:24 +0000
commit383d0fca7035a12f1201277d33e8fc87c9d60c9a (patch)
treebb12c78d91ab8d69ae18fbbf4033277481b277ad /tools/lib/api/fs/fs.c
parent9a40cb0cb8b55ecfdcd3cec1381bcc46ec488588 (diff)
regulator: max77620: add support to configure MPOK
Adding support to configure regulator POK mapping bit to control nRST_IO and GPIO1 POK function. In tegra based platform which uses MAX20024 pmic, when some of regulators are configured FPS_NONE(flexible power sequencer) causes PMIC GPIO1 to go low which lead to various other rails turning off, to avoid this MPOK bit of those regulators need to be set to 0 so that PMIC GPIO1 will not go low. Signed-off-by: Venkat Reddy Talla <vreddytalla@nvidia.com> Acked-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'tools/lib/api/fs/fs.c')