diff options
Diffstat (limited to 'hurd/hurdlookup.c')
-rw-r--r-- | hurd/hurdlookup.c | 281 |
1 files changed, 0 insertions, 281 deletions
diff --git a/hurd/hurdlookup.c b/hurd/hurdlookup.c deleted file mode 100644 index 84cb3d3015..0000000000 --- a/hurd/hurdlookup.c +++ /dev/null @@ -1,281 +0,0 @@ -/* Copyright (C) 1992-2017 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/>. */ - -#include <hurd.h> -#include <hurd/lookup.h> -#include <string.h> -#include <fcntl.h> - - -/* Translate the error from dir_lookup into the error the user sees. */ -static inline error_t -lookup_error (error_t error) -{ - switch (error) - { - case EOPNOTSUPP: - case MIG_BAD_ID: - /* These indicate that the server does not understand dir_lookup - at all. If it were a directory, it would, by definition. */ - return ENOTDIR; - default: - return error; - } -} - -error_t -__hurd_file_name_lookup (error_t (*use_init_port) - (int which, error_t (*operate) (file_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 err; - enum retry_type doretry; - char retryname[1024]; /* XXX string_t LOSES! */ - int startport; - - error_t lookup_op (mach_port_t startdir) - { - return lookup_error ((*lookup) (startdir, file_name, flags, mode, - &doretry, retryname, result)); - } - - if (! lookup) - lookup = __dir_lookup; - - if (file_name[0] == '\0') - return ENOENT; - - startport = (file_name[0] == '/') ? INIT_PORT_CRDIR : INIT_PORT_CWDIR; - while (file_name[0] == '/') - file_name++; - - if (flags & O_NOFOLLOW) /* See lookup-retry.c about O_NOFOLLOW. */ - flags |= O_NOTRANS; - - if (flags & O_DIRECTORY) - { - /* The caller wants to require that the file we look up is a directory. - We can do this without an extra RPC by appending a trailing slash - to the file name we look up. */ - size_t len = strlen (file_name); - if (len == 0) - file_name = "/"; - else if (file_name[len - 1] != '/') - { - char *n = alloca (len + 2); - memcpy (n, file_name, len); - n[len] = '/'; - n[len + 1] = '\0'; - file_name = n; - } - } - - err = (*use_init_port) (startport, &lookup_op); - if (! err) - err = __hurd_file_name_lookup_retry (use_init_port, get_dtable_port, - lookup, doretry, retryname, - flags, mode, result); - - return err; -} -weak_alias (__hurd_file_name_lookup, hurd_file_name_lookup) - -error_t -__hurd_file_name_split (error_t (*use_init_port) - (int which, error_t (*operate) (file_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 addref (file_t crdir) - { - *dir = crdir; - return __mach_port_mod_refs (__mach_task_self (), - crdir, MACH_PORT_RIGHT_SEND, +1); - } - - const char *lastslash = strrchr (file_name, '/'); - - if (lastslash != NULL) - { - if (lastslash == file_name) - { - /* "/foobar" => crdir + "foobar". */ - *name = (char *) file_name + 1; - return (*use_init_port) (INIT_PORT_CRDIR, &addref); - } - else - { - /* "/dir1/dir2/.../file". */ - char dirname[lastslash - file_name + 1]; - memcpy (dirname, file_name, lastslash - file_name); - dirname[lastslash - file_name] = '\0'; - *name = (char *) lastslash + 1; - return - __hurd_file_name_lookup (use_init_port, get_dtable_port, lookup, - dirname, 0, 0, dir); - } - } - else if (file_name[0] == '\0') - return ENOENT; - else - { - /* "foobar" => cwdir + "foobar". */ - *name = (char *) file_name; - return (*use_init_port) (INIT_PORT_CWDIR, &addref); - } -} -weak_alias (__hurd_file_name_split, hurd_file_name_split) - -/* This is the same as hurd_file_name_split, except that it ignores - trailing slashes (so *NAME is never ""). */ -error_t -__hurd_directory_name_split (error_t (*use_init_port) - (int which, error_t (*operate) (file_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 addref (file_t crdir) - { - *dir = crdir; - return __mach_port_mod_refs (__mach_task_self (), - crdir, MACH_PORT_RIGHT_SEND, +1); - } - - const char *lastslash = strrchr (file_name, '/'); - - if (lastslash != NULL && lastslash[1] == '\0') - { - /* Trailing slash doesn't count. Look back further. */ - - /* Back up over all trailing slashes. */ - while (lastslash > file_name && *lastslash == '/') - --lastslash; - - /* Find the last one earlier in the string, before the trailing ones. */ - lastslash = __memrchr (file_name, '/', lastslash - file_name); - } - - if (lastslash != NULL) - { - if (lastslash == file_name) - { - /* "/foobar" => crdir + "foobar". */ - *name = (char *) file_name + 1; - return (*use_init_port) (INIT_PORT_CRDIR, &addref); - } - else - { - /* "/dir1/dir2/.../file". */ - char dirname[lastslash - file_name + 1]; - memcpy (dirname, file_name, lastslash - file_name); - dirname[lastslash - file_name] = '\0'; - *name = (char *) lastslash + 1; - return - __hurd_file_name_lookup (use_init_port, get_dtable_port, lookup, - dirname, 0, 0, dir); - } - } - else if (file_name[0] == '\0') - return ENOENT; - else - { - /* "foobar" => cwdir + "foobar". */ - *name = (char *) file_name; - return (*use_init_port) (INIT_PORT_CWDIR, &addref); - } -} -weak_alias (__hurd_directory_name_split, hurd_directory_name_split) - - -file_t -__file_name_lookup (const char *file_name, int flags, mode_t mode) -{ - error_t err; - file_t result; - - err = __hurd_file_name_lookup (&_hurd_ports_use, &__getdport, 0, - file_name, flags, mode & ~_hurd_umask, - &result); - - return err ? (__hurd_fail (err), MACH_PORT_NULL) : result; -} -weak_alias (__file_name_lookup, file_name_lookup) - - -file_t -__file_name_split (const char *file_name, char **name) -{ - error_t err; - file_t result; - - err = __hurd_file_name_split (&_hurd_ports_use, &__getdport, 0, - file_name, &result, name); - - return err ? (__hurd_fail (err), MACH_PORT_NULL) : result; -} -weak_alias (__file_name_split, file_name_split) - -file_t -__directory_name_split (const char *directory_name, char **name) -{ - error_t err; - file_t result; - - err = __hurd_directory_name_split (&_hurd_ports_use, &__getdport, 0, - directory_name, &result, name); - - return err ? (__hurd_fail (err), MACH_PORT_NULL) : result; -} -weak_alias (__directory_name_split, directory_name_split) - - -file_t -__file_name_lookup_under (file_t startdir, - const char *file_name, int flags, mode_t mode) -{ - error_t err; - file_t result; - - error_t use_init_port (int which, error_t (*operate) (mach_port_t)) - { - return (which == INIT_PORT_CWDIR ? (*operate) (startdir) : - _hurd_ports_use (which, operate)); - } - - err = __hurd_file_name_lookup (&use_init_port, &__getdport, 0, - file_name, flags, mode & ~_hurd_umask, - &result); - - return err ? (__hurd_fail (err), MACH_PORT_NULL) : result; -} -weak_alias (__file_name_lookup_under, file_name_lookup_under) |