/* * linux/fs/ext4/symlink.c * * Only fast symlinks left here - the rest is done by generic code. AV, 1999 * * Copyright (C) 1992, 1993, 1994, 1995 * Remy Card (card@masi.ibp.fr) * Laboratoire MASI - Institut Blaise Pascal * Universite Pierre et Marie Curie (Paris VI) * * from * * linux/fs/minix/symlink.c * * Copyright (C) 1991, 1992 Linus Torvalds * * ext4 symlink handling code */ #include #include #include "ext4.h" #include "xattr.h" static const char *ext4_encrypted_get_link(struct dentry *dentry, struct inode *inode, struct delayed_call *done) { struct page *cpage = NULL; char *caddr, *paddr = NULL; struct fscrypt_str cstr, pstr; struct fscrypt_symlink_data *sd; int res; u32 max_size = inode->i_sb->s_blocksize; if (!dentry) return ERR_PTR(-ECHILD); res = fscrypt_get_encryption_info(inode); if (res) return ERR_PTR(res); if (ext4_inode_is_fast_symlink(inode)) { caddr = (char *) EXT4_I(inode)->i_data; max_size = sizeof(EXT4_I(inode)->i_data); } else { cpage = read_mapping_page(inode->i_mapping, 0, NULL); if (IS_ERR(cpage)) return ERR_CAST(cpage); caddr = page_address(cpage); } /* Symlink is encrypted */ sd = (struct fscrypt_symlink_data *)caddr; cstr.name = sd->encrypted_path; cstr.len = le16_to_cpu(sd->len); if ((cstr.len + sizeof(struct fscrypt_symlink_data) - 1) > max_size) { /* Symlink data on the disk is corrupted */ res = -EFSCORRUPTED; goto errout; } res = fscrypt_fname_alloc_buffer(inode, cstr.len, &pstr); if (res) goto errout; paddr = pstr.name; res = fscrypt_fname_disk_to_usr(inode, 0, 0, &cstr, &pstr); if (res) goto errout; /* Null-terminate the name */ paddr[pstr.len] = '\0'; if (cpage) put_page(cpage); set_delayed_call(done, kfree_link, paddr); return paddr; errout: if (cpage) put_page(cpage); kfree(paddr); return ERR_PTR(res); } const struct inode_operations ext4_encrypted_symlink_inode_operations = { .get_link = ext4_encrypted_get_link, .setattr = ext4_setattr, .listxattr = ext4_listxattr, }; const struct inode_operations ext4_symlink_inode_operations = { .get_link = page_get_link, .setattr = ext4_setattr, .listxattr = ext4_listxattr, }; const struct inode_operations ext4_fast_symlink_inode_operations = { .get_link = simple_get_link, .setattr = ext4_setattr, .listxattr = ext4_listxattr, }; ass='form'>
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authorCharles Keepax <ckeepax@opensource.wolfsonmicro.com>2016-11-10 10:45:18 +0000
committerMark Brown <broonie@kernel.org>2016-11-10 17:28:32 +0000
commit85b037442e3f0e84296ab1010fd6b057eee18496 (patch)
treeb745f3f22cbd45af2039a004eb3f21d530afdc8b /include/uapi/sound/firewire.h
parent1001354ca34179f3db924eb66672442a173147dc (diff)
regulators: helpers: Fix handling of bypass_val_on in get_bypass_regmap
The handling of bypass_val_on that was added in regulator_get_bypass_regmap is done unconditionally however several drivers don't define a value for bypass_val_on. This results in those drivers reporting bypass being enabled when it is not. In regulator_set_bypass_regmap we use bypass_mask if bypass_val_on is zero. This patch adds similar handling in regulator_get_bypass_regmap. Fixes: commit dd1a571daee7 ("regulator: helpers: Ensure bypass register field matches ON value") Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'include/uapi/sound/firewire.h')