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Diffstat (limited to 'REORG.TODO/hurd/hurd/lookup.h')
| -rw-r--r-- | REORG.TODO/hurd/hurd/lookup.h | 190 |
1 files changed, 190 insertions, 0 deletions
diff --git a/REORG.TODO/hurd/hurd/lookup.h b/REORG.TODO/hurd/hurd/lookup.h new file mode 100644 index 0000000000..99052994c7 --- /dev/null +++ b/REORG.TODO/hurd/hurd/lookup.h @@ -0,0 +1,190 @@ +/* Declarations of file name translation functions for the GNU Hurd. + Copyright (C) 1995-2017 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#ifndef _HURD_LOOKUP_H +#define _HURD_LOOKUP_H 1 + +/* These functions all take two callback functions as the first two arguments. + The first callback function USE_INIT_PORT is called as follows: + + error_t use_init_port (int which, error_t (*operate) (mach_port_t)); + + WHICH is nonnegative value less than INIT_PORT_MAX, indicating which + init port is required. The callback function should call *OPERATE + with a send right to the appropriate init port. No user reference + is consumed; the right will only be used after *OPERATE returns if + *OPERATE has added its own user reference. + + LOOKUP is a function to do the actual filesystem lookup. It is passed the + same arguments that the dir_lookup rpc accepts, and if 0, __dir_lookup is + used. + + The second callback function GET_DTABLE_PORT should behave like `getdport'. + + All these functions return zero on success or an error code on failure. */ + + +/* Open a port to FILE with the given FLAGS and MODE (see <fcntl.h>). If + successful, returns zero and store the port to FILE in *PORT; otherwise + returns an error code. */ + +error_t __hurd_file_name_lookup (error_t (*use_init_port) + (int which, + error_t (*operate) (mach_port_t)), + file_t (*get_dtable_port) (int fd), + error_t (*lookup) + (file_t dir, char *name, int flags, mode_t mode, + retry_type *do_retry, string_t retry_name, + mach_port_t *result), + const char *file_name, + int flags, mode_t mode, + file_t *result); +error_t hurd_file_name_lookup (error_t (*use_init_port) + (int which, + error_t (*operate) (mach_port_t)), + file_t (*get_dtable_port) (int fd), + error_t (*lookup) + (file_t dir, char *name, int flags, mode_t mode, + retry_type *do_retry, string_t retry_name, + mach_port_t *result), + const char *file_name, + int flags, mode_t mode, + file_t *result); + + +/* Split FILE into a directory and a name within the directory. Look up a + port for the directory and store it in *DIR; store in *NAME a pointer + into FILE where the name within directory begins. */ + +error_t __hurd_file_name_split (error_t (*use_init_port) + (int which, + error_t (*operate) (mach_port_t)), + file_t (*get_dtable_port) (int fd), + error_t (*lookup) (file_t dir, char *name, + int flags, mode_t mode, + retry_type *do_retry, string_t retry_name, + mach_port_t *result), + const char *file_name, + file_t *dir, char **name); +error_t hurd_file_name_split (error_t (*use_init_port) + (int which, + error_t (*operate) (mach_port_t)), + file_t (*get_dtable_port) (int fd), + error_t (*lookup) (file_t dir, char *name, + int flags, mode_t mode, + retry_type *do_retry, string_t retry_name, + mach_port_t *result), + const char *file_name, + file_t *dir, char **name); + +/* Split DIRECTORY into a parent directory and a name within the directory. + This is the same as hurd_file_name_split, but ignores trailing slashes. */ + +error_t __hurd_directory_name_split (error_t (*use_init_port) + (int which, + error_t (*operate) (mach_port_t)), + file_t (*get_dtable_port) (int fd), + error_t (*lookup) (file_t dir, char *name, + int flags, mode_t mode, + retry_type *do_retry, string_t retry_name, + mach_port_t *result), + const char *directory_name, + file_t *dir, char **name); +error_t hurd_directory_name_split (error_t (*use_init_port) + (int which, + error_t (*operate) (mach_port_t)), + file_t (*get_dtable_port) (int fd), + error_t (*lookup) (file_t dir, char *name, + int flags, mode_t mode, + retry_type *do_retry, string_t retry_name, + mach_port_t *result), + const char *directory_name, + file_t *dir, char **name); + + +/* Process the values returned by `dir_lookup' et al, and loop doing + `dir_lookup' calls until one returns FS_RETRY_NONE. The arguments + should be those just passed to and/or returned from `dir_lookup', + `fsys_getroot', or `file_invoke_translator'. This function consumes the + reference in *RESULT even if it returns an error. */ + +error_t __hurd_file_name_lookup_retry (error_t (*use_init_port) + (int which, + error_t (*operate) (mach_port_t)), + file_t (*get_dtable_port) (int fd), + error_t (*lookup) + (file_t dir, char *name, + int flags, mode_t mode, + retry_type *do_retry, + string_t retry_name, + mach_port_t *result), + enum retry_type doretry, + char retryname[1024], + int flags, mode_t mode, + file_t *result); +error_t hurd_file_name_lookup_retry (error_t (*use_init_port) + (int which, + error_t (*operate) (mach_port_t)), + file_t (*get_dtable_port) (int fd), + error_t (*lookup) + (file_t dir, char *name, + int flags, mode_t mode, + retry_type *do_retry, + string_t retry_name, + mach_port_t *result), + enum retry_type doretry, + char retryname[1024], + int flags, mode_t mode, + file_t *result); + + +/* If FILE_NAME contains a '/', or PATH is NULL, call FUN with FILE_NAME, and + return the result (if PREFIXED_NAME is non-NULL, setting *PREFIXED_NAME to + NULL). Otherwise, call FUN repeatedly with FILE_NAME prefixed with each + successive `:' separated element of PATH, returning whenever FUN returns + 0 (if PREFIXED_NAME is non-NULL, setting *PREFIXED_NAME to the resulting + prefixed path). If FUN never returns 0, return the first non-ENOENT + return value, or ENOENT if there is none. */ +error_t file_name_path_scan (const char *file_name, const char *path, + error_t (*fun)(const char *name), + char **prefixed_name); + +/* Lookup FILE_NAME and return the node opened with FLAGS & MODE in result + (see hurd_file_name_lookup for details), but a simple filename (without + any directory prefixes) will be consecutively prefixed with the pathnames + in the `:' separated list PATH until one succeeds in a successful lookup. + If none succeed, then the first error that wasn't ENOENT is returned, or + ENOENT if no other errors were returned. If PREFIXED_NAME is non-NULL, + then if RESULT is looked up directly, *PREFIXED_NAME is set to NULL, and + if it is looked up using a prefix from PATH, *PREFIXED_NAME is set to + malloced storage containing the prefixed name. */ +error_t hurd_file_name_path_lookup (error_t (*use_init_port) + (int which, + error_t (*operate) (mach_port_t)), + file_t (*get_dtable_port) (int fd), + error_t (*lookup) + (file_t dir, char *name, + int flags, mode_t mode, + retry_type *do_retry, + string_t retry_name, + mach_port_t *result), + const char *file_name, const char *path, + int flags, mode_t mode, + file_t *result, char **prefixed_name); + +#endif /* hurd/lookup.h */ |