mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-02 06:46:42 +07:00
621e155a35
Change d_compare so it may be called from lock-free RCU lookups. This does put significant restrictions on what may be done from the callback, however there don't seem to have been any problems with in-tree fses. If some strange use case pops up that _really_ cannot cope with the rcu-walk rules, we can just add new rcu-unaware callbacks, which would cause name lookup to drop out of rcu-walk mode. For in-tree filesystems, this is just a mechanical change. Signed-off-by: Nick Piggin <npiggin@kernel.dk>
247 lines
6.2 KiB
C
247 lines
6.2 KiB
C
/*
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* ncp_fs.h
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*
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* Copyright (C) 1995, 1996 by Volker Lendecke
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*
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*/
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#ifndef _LINUX_NCP_FS_H
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#define _LINUX_NCP_FS_H
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#include <linux/fs.h>
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#include <linux/in.h>
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#include <linux/types.h>
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#include <linux/magic.h>
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#include <linux/ipx.h>
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#include <linux/ncp_no.h>
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/*
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* ioctl commands
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*/
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struct ncp_ioctl_request {
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unsigned int function;
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unsigned int size;
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char __user *data;
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};
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struct ncp_fs_info {
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int version;
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struct sockaddr_ipx addr;
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__kernel_uid_t mounted_uid;
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int connection; /* Connection number the server assigned us */
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int buffer_size; /* The negotiated buffer size, to be
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used for read/write requests! */
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int volume_number;
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__le32 directory_id;
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};
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struct ncp_fs_info_v2 {
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int version;
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unsigned long mounted_uid;
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unsigned int connection;
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unsigned int buffer_size;
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unsigned int volume_number;
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__le32 directory_id;
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__u32 dummy1;
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__u32 dummy2;
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__u32 dummy3;
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};
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struct ncp_sign_init
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{
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char sign_root[8];
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char sign_last[16];
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};
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struct ncp_lock_ioctl
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{
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#define NCP_LOCK_LOG 0
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#define NCP_LOCK_SH 1
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#define NCP_LOCK_EX 2
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#define NCP_LOCK_CLEAR 256
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int cmd;
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int origin;
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unsigned int offset;
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unsigned int length;
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#define NCP_LOCK_DEFAULT_TIMEOUT 18
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#define NCP_LOCK_MAX_TIMEOUT 180
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int timeout;
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};
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struct ncp_setroot_ioctl
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{
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int volNumber;
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int namespace;
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__le32 dirEntNum;
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};
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struct ncp_objectname_ioctl
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{
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#define NCP_AUTH_NONE 0x00
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#define NCP_AUTH_BIND 0x31
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#define NCP_AUTH_NDS 0x32
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int auth_type;
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size_t object_name_len;
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void __user * object_name; /* a userspace data, in most cases user name */
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};
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struct ncp_privatedata_ioctl
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{
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size_t len;
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void __user * data; /* ~1000 for NDS */
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};
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/* NLS charsets by ioctl */
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#define NCP_IOCSNAME_LEN 20
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struct ncp_nls_ioctl
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{
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unsigned char codepage[NCP_IOCSNAME_LEN+1];
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unsigned char iocharset[NCP_IOCSNAME_LEN+1];
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};
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#define NCP_IOC_NCPREQUEST _IOR('n', 1, struct ncp_ioctl_request)
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#define NCP_IOC_GETMOUNTUID _IOW('n', 2, __kernel_old_uid_t)
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#define NCP_IOC_GETMOUNTUID2 _IOW('n', 2, unsigned long)
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#define NCP_IOC_CONN_LOGGED_IN _IO('n', 3)
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#define NCP_GET_FS_INFO_VERSION (1)
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#define NCP_IOC_GET_FS_INFO _IOWR('n', 4, struct ncp_fs_info)
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#define NCP_GET_FS_INFO_VERSION_V2 (2)
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#define NCP_IOC_GET_FS_INFO_V2 _IOWR('n', 4, struct ncp_fs_info_v2)
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#define NCP_IOC_SIGN_INIT _IOR('n', 5, struct ncp_sign_init)
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#define NCP_IOC_SIGN_WANTED _IOR('n', 6, int)
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#define NCP_IOC_SET_SIGN_WANTED _IOW('n', 6, int)
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#define NCP_IOC_LOCKUNLOCK _IOR('n', 7, struct ncp_lock_ioctl)
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#define NCP_IOC_GETROOT _IOW('n', 8, struct ncp_setroot_ioctl)
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#define NCP_IOC_SETROOT _IOR('n', 8, struct ncp_setroot_ioctl)
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#define NCP_IOC_GETOBJECTNAME _IOWR('n', 9, struct ncp_objectname_ioctl)
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#define NCP_IOC_SETOBJECTNAME _IOR('n', 9, struct ncp_objectname_ioctl)
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#define NCP_IOC_GETPRIVATEDATA _IOWR('n', 10, struct ncp_privatedata_ioctl)
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#define NCP_IOC_SETPRIVATEDATA _IOR('n', 10, struct ncp_privatedata_ioctl)
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#define NCP_IOC_GETCHARSETS _IOWR('n', 11, struct ncp_nls_ioctl)
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#define NCP_IOC_SETCHARSETS _IOR('n', 11, struct ncp_nls_ioctl)
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#define NCP_IOC_GETDENTRYTTL _IOW('n', 12, __u32)
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#define NCP_IOC_SETDENTRYTTL _IOR('n', 12, __u32)
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/*
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* The packet size to allocate. One page should be enough.
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*/
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#define NCP_PACKET_SIZE 4070
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#define NCP_MAXPATHLEN 255
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#define NCP_MAXNAMELEN 14
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#ifdef __KERNEL__
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#include <linux/ncp_fs_i.h>
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#include <linux/ncp_fs_sb.h>
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/* define because it is easy to change PRINTK to {*}PRINTK */
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#define PRINTK(format, args...) printk(KERN_DEBUG format , ## args)
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#undef NCPFS_PARANOIA
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#ifdef NCPFS_PARANOIA
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#define PPRINTK(format, args...) PRINTK(format , ## args)
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#else
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#define PPRINTK(format, args...)
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#endif
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#ifndef DEBUG_NCP
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#define DEBUG_NCP 0
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#endif
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#if DEBUG_NCP > 0
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#define DPRINTK(format, args...) PRINTK(format , ## args)
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#else
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#define DPRINTK(format, args...)
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#endif
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#if DEBUG_NCP > 1
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#define DDPRINTK(format, args...) PRINTK(format , ## args)
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#else
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#define DDPRINTK(format, args...)
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#endif
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#define NCP_MAX_RPC_TIMEOUT (6*HZ)
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struct ncp_entry_info {
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struct nw_info_struct i;
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ino_t ino;
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int opened;
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int access;
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unsigned int volume;
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__u8 file_handle[6];
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};
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static inline struct ncp_server *NCP_SBP(const struct super_block *sb)
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{
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return sb->s_fs_info;
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}
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#define NCP_SERVER(inode) NCP_SBP((inode)->i_sb)
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static inline struct ncp_inode_info *NCP_FINFO(const struct inode *inode)
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{
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return container_of(inode, struct ncp_inode_info, vfs_inode);
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}
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/* linux/fs/ncpfs/inode.c */
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int ncp_notify_change(struct dentry *, struct iattr *);
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struct inode *ncp_iget(struct super_block *, struct ncp_entry_info *);
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void ncp_update_inode(struct inode *, struct ncp_entry_info *);
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void ncp_update_inode2(struct inode *, struct ncp_entry_info *);
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/* linux/fs/ncpfs/dir.c */
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extern const struct inode_operations ncp_dir_inode_operations;
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extern const struct file_operations ncp_dir_operations;
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extern const struct dentry_operations ncp_root_dentry_operations;
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int ncp_conn_logged_in(struct super_block *);
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int ncp_date_dos2unix(__le16 time, __le16 date);
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void ncp_date_unix2dos(int unix_date, __le16 * time, __le16 * date);
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/* linux/fs/ncpfs/ioctl.c */
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long ncp_ioctl(struct file *, unsigned int, unsigned long);
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long ncp_compat_ioctl(struct file *, unsigned int, unsigned long);
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/* linux/fs/ncpfs/sock.c */
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int ncp_request2(struct ncp_server *server, int function,
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void* reply, int max_reply_size);
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static inline int ncp_request(struct ncp_server *server, int function) {
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return ncp_request2(server, function, server->packet, server->packet_size);
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}
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int ncp_connect(struct ncp_server *server);
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int ncp_disconnect(struct ncp_server *server);
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void ncp_lock_server(struct ncp_server *server);
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void ncp_unlock_server(struct ncp_server *server);
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/* linux/fs/ncpfs/symlink.c */
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#if defined(CONFIG_NCPFS_EXTRAS) || defined(CONFIG_NCPFS_NFS_NS)
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extern const struct address_space_operations ncp_symlink_aops;
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int ncp_symlink(struct inode*, struct dentry*, const char*);
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#endif
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/* linux/fs/ncpfs/file.c */
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extern const struct inode_operations ncp_file_inode_operations;
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extern const struct file_operations ncp_file_operations;
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int ncp_make_open(struct inode *, int);
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/* linux/fs/ncpfs/mmap.c */
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int ncp_mmap(struct file *, struct vm_area_struct *);
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/* linux/fs/ncpfs/ncplib_kernel.c */
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int ncp_make_closed(struct inode *);
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#endif /* __KERNEL__ */
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#endif /* _LINUX_NCP_FS_H */
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