[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/path-lookup.c b/ap/libc/glibc/glibc-2.22/hurd/path-lookup.c
new file mode 100644
index 0000000..32b43cd
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.22/hurd/path-lookup.c
@@ -0,0 +1,122 @@
+/* Filename lookup using a search path
+ Copyright (C) 1995-2015 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Written by Miles Bader <miles@gnu.ai.mit.edu>
+
+ 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 <string.h>
+#include <hurd.h>
+#include <hurd/lookup.h>
+
+/* 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)
+{
+ if (path == NULL || index (file_name, '/'))
+ {
+ if (prefixed_name)
+ *prefixed_name = 0;
+ return (*fun)(file_name);
+ }
+ else
+ {
+ error_t real_err = 0;
+ size_t file_name_len = strlen (file_name);
+
+ for (;;)
+ {
+ error_t err;
+ const char *next = index (path, ':') ?: path + strlen (path);
+ size_t pfx_len = next - path;
+ char pfxed_name[pfx_len + 2 + file_name_len + 1];
+
+ if (pfx_len == 0)
+ pfxed_name[pfx_len++] = '.';
+ else
+ memcpy (pfxed_name, path, pfx_len);
+ if (pfxed_name[pfx_len - 1] != '/')
+ pfxed_name[pfx_len++] = '/';
+ memcpy (pfxed_name + pfx_len, file_name, file_name_len + 1);
+
+ err = (*fun)(pfxed_name);
+ if (err == 0)
+ {
+ if (prefixed_name)
+ *prefixed_name = strdup (pfxed_name);
+ return 0;
+ }
+ if (!real_err && err != ENOENT)
+ real_err = err;
+
+ if (*next == '\0')
+ return real_err ?: ENOENT;
+ else
+ path = next + 1;
+ }
+ }
+}
+
+/* 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)
+{
+ error_t scan_lookup (const char *name)
+ {
+ return
+ __hurd_file_name_lookup (use_init_port, get_dtable_port, lookup,
+ name, flags, mode, result);
+ }
+ return file_name_path_scan (file_name, path, scan_lookup, prefixed_name);
+}
+
+file_t
+file_name_path_lookup (const char *file_name, const char *path,
+ int flags, mode_t mode, char **prefixed_name)
+{
+ error_t err;
+ file_t result;
+
+ err = hurd_file_name_path_lookup (&_hurd_ports_use, &__getdport, 0,
+ file_name, path, flags, mode,
+ &result, prefixed_name);
+
+ return err ? (__hurd_fail (err), MACH_PORT_NULL) : result;
+}