[T106][ZXW-22]7520V3SCV2.01.01.02P42U09_VEC_V0.8_AP_VEC origin source commit
Change-Id: Ic6e05d89ecd62fc34f82b23dcf306c93764aec4b
diff --git a/ap/libc/glibc/glibc-2.22/hurd/hurdlookup.c b/ap/libc/glibc/glibc-2.22/hurd/hurdlookup.c
new file mode 100644
index 0000000..d410af1
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.22/hurd/hurdlookup.c
@@ -0,0 +1,281 @@
+/* Copyright (C) 1992-2015 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)