diff options
Diffstat (limited to 'nsmux.h')
| -rw-r--r-- | nsmux.h | 414 |
1 files changed, 133 insertions, 281 deletions
@@ -1,10 +1,10 @@ -/*----------------------------------------------------------------------------*/ +/*---------------------------------------------------------------------------*/ /*nsmux.h*/ -/*----------------------------------------------------------------------------*/ +/*---------------------------------------------------------------------------*/ /*Definitions for filesystem proxy for namespace-based translator selection.*/ -/*----------------------------------------------------------------------------*/ +/*---------------------------------------------------------------------------*/ /*Based on the code of unionfs translator.*/ -/*----------------------------------------------------------------------------*/ +/*---------------------------------------------------------------------------*/ /*Copyright (C) 2001, 2002, 2005, 2008 Free Software Foundation, Inc. Written by Sergiu Ivanov <unlimitedscolobb@gmail.com>. @@ -22,10 +22,10 @@ along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.*/ -/*----------------------------------------------------------------------------*/ +/*---------------------------------------------------------------------------*/ #ifndef __NSMUX_H__ #define __NSMUX_H__ -/*----------------------------------------------------------------------------*/ +/*---------------------------------------------------------------------------*/ #include <stddef.h> #include <stdlib.h> #include <cthreads.h> @@ -37,354 +37,206 @@ #include <sys/time.h> #include <hurd/ihash.h> #include <hurd/iohelp.h> -/*----------------------------------------------------------------------------*/ +/*---------------------------------------------------------------------------*/ #include "lib.h" #include "node.h" -/*----------------------------------------------------------------------------*/ +/*---------------------------------------------------------------------------*/ -/*----------------------------------------------------------------------------*/ -/*--------Macros--------------------------------------------------------------*/ +/*---------------------------------------------------------------------------*/ +/*--------Macros-------------------------------------------------------------*/ /*The inode number for the root node*/ #define NSMUX_ROOT_INODE 1 -/*----------------------------------------------------------------------------*/ -/*The special flag character for creating proxy nodes*/ -#define LOOKUP_MAGIC_CHAR '\33' -/*----------------------------------------------------------------------------*/ +/*---------------------------------------------------------------------------*/ /*Bits that are turned off after open*/ #define OPENONLY_STATE_MODES (O_CREAT | O_EXCL | O_NOLINK | O_NOTRANS) -/*----------------------------------------------------------------------------*/ +/*---------------------------------------------------------------------------*/ -/*----------------------------------------------------------------------------*/ -/*--------Global Variables----------------------------------------------------*/ +/*---------------------------------------------------------------------------*/ +/*--------Global Variables---------------------------------------------------*/ /*A mapped time value*/ /*Required for a very fast access to time*/ -extern volatile struct mapped_time_value * maptime; -/*----------------------------------------------------------------------------*/ +extern volatile struct mapped_time_value *maptime; +/*---------------------------------------------------------------------------*/ /*A port to the underlying node*/ extern mach_port_t underlying_node; -/*----------------------------------------------------------------------------*/ +/*---------------------------------------------------------------------------*/ /*The stat information about the underlying node*/ extern io_statbuf_t underlying_node_stat; -/*----------------------------------------------------------------------------*/ +/*---------------------------------------------------------------------------*/ /*The translator callbacks required by netfs_S_dir_lookup*/ fshelp_fetch_root_callback1_t _netfs_translator_callback1; fshelp_fetch_root_callback2_t _netfs_translator_callback2; -/*----------------------------------------------------------------------------*/ +/*---------------------------------------------------------------------------*/ -/*----------------------------------------------------------------------------*/ -/*--------Functions-----------------------------------------------------------*/ +/*---------------------------------------------------------------------------*/ +/*--------Functions----------------------------------------------------------*/ /*Attempts to create a file named `name` in `dir` for `user` with mode `mode`*/ error_t -netfs_attempt_create_file - ( - struct iouser * user, - struct node * dir, - char * name, - mode_t mode, - struct node ** node - ); -/*----------------------------------------------------------------------------*/ + netfs_attempt_create_file + (struct iouser *user, + struct node *dir, char *name, mode_t mode, struct node **node); +/*---------------------------------------------------------------------------*/ /*Returns an error if the process of opening a file should not be allowed to complete because of insufficient permissions*/ error_t -netfs_check_open_permissions - ( - struct iouser * user, - struct node * np, - int flags, - int newnode - ); -/*----------------------------------------------------------------------------*/ + netfs_check_open_permissions + (struct iouser *user, struct node *np, int flags, int newnode); +/*---------------------------------------------------------------------------*/ /*Attempts an utimes call for the user `cred` on node `node`*/ error_t -netfs_attempt_utimes - ( - struct iouser * cred, - struct node * node, - struct timespec * atime, - struct timespec * mtime - ); -/*----------------------------------------------------------------------------*/ + netfs_attempt_utimes + (struct iouser *cred, + struct node *node, struct timespec *atime, struct timespec *mtime); +/*---------------------------------------------------------------------------*/ /*Returns the valid access types for file `node` and user `cred`*/ error_t -netfs_report_access - ( - struct iouser * cred, - struct node * np, - int * types - ); -/*----------------------------------------------------------------------------*/ + netfs_report_access (struct iouser *cred, struct node *np, int *types); +/*---------------------------------------------------------------------------*/ /*Validates the stat data for the node*/ -error_t -netfs_validate_stat - ( - struct node * np, - struct iouser * cred - ); -/*----------------------------------------------------------------------------*/ +error_t netfs_validate_stat (struct node *np, struct iouser *cred); +/*---------------------------------------------------------------------------*/ /*Syncs `node` completely to disk*/ -error_t -netfs_attempt_sync - ( - struct iouser * cred, - struct node * node, - int wait - ); -/*----------------------------------------------------------------------------*/ +error_t netfs_attempt_sync (struct iouser *cred, struct node *node, int wait); +/*---------------------------------------------------------------------------*/ /*Fetches a directory*/ error_t -netfs_get_dirents - ( - struct iouser * cred, - struct node * dir, - int first_entry, - int num_entries, - char ** data, - mach_msg_type_number_t * data_len, - vm_size_t max_data_len, - int * data_entries - ); -/*----------------------------------------------------------------------------*/ + netfs_get_dirents + (struct iouser *cred, + struct node *dir, + int first_entry, + int num_entries, + char **data, + mach_msg_type_number_t * data_len, + vm_size_t max_data_len, int *data_entries); +/*---------------------------------------------------------------------------*/ /*Looks up `name` under `dir` for `user`*/ error_t -netfs_attempt_lookup - ( - struct iouser * user, - struct node * dir, - char * name, - struct node ** node - ); -/*----------------------------------------------------------------------------*/ -/*Performs an advanced lookup of file `name` under `dir`. If the lookup of the - last component of the path is requested (`lastcomp` is 1), it is not a - directory and no translators are required (`name` does not contain ',,'), the - function will simply open the required file and return the port in `file`. In - other cases it will create a proxy node and return it in `node`.*/ -error_t -netfs_attempt_lookup_improved - ( - struct iouser * user, - struct node * dir, - char * name, - int flags, - int lastcomp, - node_t ** node, - file_t * file - ); -/*----------------------------------------------------------------------------*/ + netfs_attempt_lookup + (struct iouser *user, struct node *dir, char *name, struct node **node); +/*---------------------------------------------------------------------------*/ +/*Performs an advanced lookup of file `name` under `dir`. If the + lookup of the last component of the path is requested (`lastcomp` is + 1), it is not a directory and no translators are required (`name` + does not contain ',,'), the function will simply open the required + file and return the port in `file`. In other cases it will create a + proxy node and return it in `node`.*/ +error_t + netfs_attempt_lookup_improved + (struct iouser *user, + struct node *dir, + char *name, int flags, int lastcomp, node_t ** node, file_t * file); +/*---------------------------------------------------------------------------*/ /*Responds to the RPC dir_lookup*/ error_t -netfs_S_dir_lookup - ( - struct protid * diruser, - char * filename, - int flags, - mode_t mode, - retry_type * do_retry, - char * retry_name, - mach_port_t * retry_port, - mach_msg_type_number_t * retry_port_type - ); -/*----------------------------------------------------------------------------*/ + netfs_S_dir_lookup + (struct protid *diruser, + char *filename, + int flags, + mode_t mode, + retry_type * do_retry, + char *retry_name, + mach_port_t * retry_port, mach_msg_type_number_t * retry_port_type); +/*---------------------------------------------------------------------------*/ /*Deletes `name` in `dir` for `user`*/ error_t -netfs_attempt_unlink - ( - struct iouser * user, - struct node * dir, - char * name - ); -/*----------------------------------------------------------------------------*/ + netfs_attempt_unlink (struct iouser *user, struct node *dir, char *name); +/*---------------------------------------------------------------------------*/ /*Attempts to rename `fromdir`/`fromname` to `todir`/`toname`*/ error_t -netfs_attempt_rename - ( - struct iouser * user, - struct node * fromdir, - char * fromname, - struct node * todir, - char * toname, - int excl - ); -/*----------------------------------------------------------------------------*/ + netfs_attempt_rename + (struct iouser *user, + struct node *fromdir, + char *fromname, struct node *todir, char *toname, int excl); +/*---------------------------------------------------------------------------*/ /*Attempts to create a new directory*/ error_t -netfs_attempt_mkdir - ( - struct iouser * user, - struct node * dir, - char * name, - mode_t mode - ); -/*----------------------------------------------------------------------------*/ + netfs_attempt_mkdir + (struct iouser *user, struct node *dir, char *name, mode_t mode); +/*---------------------------------------------------------------------------*/ /*Attempts to remove directory `name` in `dir` for `user`*/ error_t -netfs_attempt_rmdir - ( - struct iouser * user, - struct node * dir, - char * name - ); -/*----------------------------------------------------------------------------*/ + netfs_attempt_rmdir (struct iouser *user, struct node *dir, char *name); +/*---------------------------------------------------------------------------*/ /*Attempts to change the owner of `node` for user `cred` to `uid`:`gid`*/ error_t -netfs_attempt_chown - ( - struct iouser * cred, - struct node * node, - uid_t uid, - uid_t gid - ); -/*----------------------------------------------------------------------------*/ + netfs_attempt_chown + (struct iouser *cred, struct node *node, uid_t uid, uid_t gid); +/*---------------------------------------------------------------------------*/ /*Attempts to change the author of `node` to `author`*/ error_t -netfs_attempt_chauthor - ( - struct iouser * cred, - struct node * node, - uid_t author - ); -/*----------------------------------------------------------------------------*/ + netfs_attempt_chauthor + (struct iouser *cred, struct node *node, uid_t author); +/*---------------------------------------------------------------------------*/ /*Attempts to change the mode of `node` to `mode` for `cred`*/ error_t -netfs_attempt_chmod - ( - struct iouser * user, - struct node * node, - mode_t mode - ); -/*----------------------------------------------------------------------------*/ + netfs_attempt_chmod (struct iouser *user, struct node *node, mode_t mode); +/*---------------------------------------------------------------------------*/ /*Attempts to turn `node` into a symlink targetting `name`*/ error_t -netfs_attempt_mksymlink - ( - struct iouser * cred, - struct node * node, - char * name - ); -/*----------------------------------------------------------------------------*/ + netfs_attempt_mksymlink + (struct iouser *cred, struct node *node, char *name); +/*---------------------------------------------------------------------------*/ /*Attempts to turn `node` into a device; type can be either S_IFBLK or S_IFCHR*/ error_t -netfs_attempt_mkdev - ( - struct iouser * cred, - struct node * node, - mode_t type, - dev_t indexes - ); -/*----------------------------------------------------------------------------*/ + netfs_attempt_mkdev + (struct iouser *cred, struct node *node, mode_t type, dev_t indexes); +/*---------------------------------------------------------------------------*/ /*Attempts to set the passive translator record for `file` passing `argz`*/ error_t -netfs_set_translator - ( - struct iouser * cred, - struct node * node, - char * argz, - size_t arglen - ); -/*----------------------------------------------------------------------------*/ + netfs_set_translator + (struct iouser *cred, struct node *node, char *argz, size_t arglen); +/*---------------------------------------------------------------------------*/ /*Attempts to call chflags for `node`*/ error_t -netfs_attempt_chflags - ( - struct iouser * cred, - struct node * node, - int flags - ); -/*----------------------------------------------------------------------------*/ + netfs_attempt_chflags (struct iouser *cred, struct node *node, int flags); +/*---------------------------------------------------------------------------*/ /*Attempts to set the size of file `node`*/ error_t -netfs_attempt_set_size - ( - struct iouser * cred, - struct node * node, - loff_t size - ); -/*----------------------------------------------------------------------------*/ + netfs_attempt_set_size + (struct iouser *cred, struct node *node, loff_t size); +/*---------------------------------------------------------------------------*/ /*Fetches the filesystem status information*/ error_t -netfs_attempt_statfs - ( - struct iouser * cred, - struct node * node, - fsys_statfsbuf_t * st - ); -/*----------------------------------------------------------------------------*/ + netfs_attempt_statfs + (struct iouser *cred, struct node *node, fsys_statfsbuf_t * st); +/*---------------------------------------------------------------------------*/ /*Syncs the filesystem*/ -error_t -netfs_attempt_syncfs - ( - struct iouser * cred, - int wait - ); -/*----------------------------------------------------------------------------*/ +error_t netfs_attempt_syncfs (struct iouser *cred, int wait); +/*---------------------------------------------------------------------------*/ /*Creates a link in `dir` with `name` to `file`*/ error_t -netfs_attempt_link - ( - struct iouser * user, - struct node * dir, - struct node * file, - char * name, - int excl - ); -/*----------------------------------------------------------------------------*/ + netfs_attempt_link + (struct iouser *user, + struct node *dir, struct node *file, char *name, int excl); +/*---------------------------------------------------------------------------*/ /*Attempts to create an anonymous file related to `dir` with `mode`*/ error_t -netfs_attempt_mkfile - ( - struct iouser * user, - struct node * dir, - mode_t mode, - struct node ** node - ); -/*----------------------------------------------------------------------------*/ + netfs_attempt_mkfile + (struct iouser *user, struct node *dir, mode_t mode, struct node **node); +/*---------------------------------------------------------------------------*/ /*Reads the contents of symlink `node` into `buf`*/ error_t -netfs_attempt_readlink - ( - struct iouser * user, - struct node * node, - char * buf - ); -/*----------------------------------------------------------------------------*/ + netfs_attempt_readlink (struct iouser *user, struct node *node, char *buf); +/*---------------------------------------------------------------------------*/ /*Reads from file `node` up to `len` bytes from `offset` into `data`*/ error_t -netfs_attempt_read - ( - struct iouser * cred, - struct node * np, - loff_t offset, - size_t * len, - void * data - ); -/*----------------------------------------------------------------------------*/ + netfs_attempt_read + (struct iouser *cred, + struct node *np, loff_t offset, size_t * len, void *data); +/*---------------------------------------------------------------------------*/ /*Writes to file `node` up to `len` bytes from offset from `data`*/ error_t -netfs_attempt_write - ( - struct iouser * cred, - struct node * node, - loff_t offset, - size_t * len, - void * data - ); -/*----------------------------------------------------------------------------*/ + netfs_attempt_write + (struct iouser *cred, + struct node *node, loff_t offset, size_t * len, void *data); +/*---------------------------------------------------------------------------*/ /*Frees all storage associated with the node*/ -void -netfs_node_norefs - ( - struct node * np - ); -/*----------------------------------------------------------------------------*/ +void netfs_node_norefs (struct node *np); +/*---------------------------------------------------------------------------*/ /*Implements file_get_translator_cntl as described in <hurd/fs.defs> - (according to diskfs_S_file_get_translator_cntl)*/ + (according to diskfs_S_file_get_translator_cntl)*/ kern_return_t -netfs_S_file_get_translator_cntl - ( - struct protid * user, - mach_port_t * cntl, - mach_msg_type_name_t * cntltype - ); -/*----------------------------------------------------------------------------*/ + netfs_S_file_get_translator_cntl + (struct protid *user, mach_port_t * cntl, mach_msg_type_name_t * cntltype); +/*---------------------------------------------------------------------------*/ #endif /*__NSMUX_H__*/ |