| /****************************************************************************** |
| * |
| * Module Name: osunixdir - Unix directory access interfaces |
| * |
| *****************************************************************************/ |
| |
| /* |
| * Copyright (C) 2000 - 2016, Intel Corp. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions, and the following disclaimer, |
| * without modification. |
| * 2. Redistributions in binary form must reproduce at minimum a disclaimer |
| * substantially similar to the "NO WARRANTY" disclaimer below |
| * ("Disclaimer") and any redistribution must be conditioned upon |
| * including a substantially similar Disclaimer requirement for further |
| * binary redistribution. |
| * 3. Neither the names of the above-listed copyright holders nor the names |
| * of any contributors may be used to endorse or promote products derived |
| * from this software without specific prior written permission. |
| * |
| * Alternatively, this software may be distributed under the terms of the |
| * GNU General Public License ("GPL") version 2 as published by the Free |
| * Software Foundation. |
| * |
| * NO WARRANTY |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
| * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING |
| * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| * POSSIBILITY OF SUCH DAMAGES. |
| */ |
| |
| #include "acpi.h" |
| |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <dirent.h> |
| #include <fnmatch.h> |
| #include <ctype.h> |
| #include <sys/stat.h> |
| |
| /* |
| * Allocated structure returned from OsOpenDirectory |
| */ |
| typedef struct ExternalFindInfo |
| { |
| char *DirPathname; |
| DIR *DirPtr; |
| char temp_buffer[256]; |
| char *WildcardSpec; |
| char RequestedFileType; |
| |
| } EXTERNAL_FIND_INFO; |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiOsOpenDirectory |
| * |
| * PARAMETERS: DirPathname - Full pathname to the directory |
| * WildcardSpec - string of the form "*.c", etc. |
| * |
| * RETURN: A directory "handle" to be used in subsequent search operations. |
| * NULL returned on failure. |
| * |
| * DESCRIPTION: Open a directory in preparation for a wildcard search |
| * |
| ******************************************************************************/ |
| |
| void * |
| AcpiOsOpenDirectory ( |
| char *DirPathname, |
| char *WildcardSpec, |
| char RequestedFileType) |
| { |
| EXTERNAL_FIND_INFO *ExternalInfo; |
| DIR *dir; |
| |
| |
| /* Allocate the info struct that will be returned to the caller */ |
| |
| ExternalInfo = calloc (1, sizeof (EXTERNAL_FIND_INFO)); |
| if (!ExternalInfo) |
| { |
| return (NULL); |
| } |
| |
| /* Get the directory stream */ |
| |
| dir = opendir (DirPathname); |
| if (!dir) |
| { |
| fprintf (stderr, "Cannot open directory - %s\n", DirPathname); |
| free (ExternalInfo); |
| return (NULL); |
| } |
| |
| /* Save the info in the return structure */ |
| |
| ExternalInfo->WildcardSpec = WildcardSpec; |
| ExternalInfo->RequestedFileType = RequestedFileType; |
| ExternalInfo->DirPathname = DirPathname; |
| ExternalInfo->DirPtr = dir; |
| return (ExternalInfo); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiOsGetNextFilename |
| * |
| * PARAMETERS: DirHandle - Created via AcpiOsOpenDirectory |
| * |
| * RETURN: Next filename matched. NULL if no more matches. |
| * |
| * DESCRIPTION: Get the next file in the directory that matches the wildcard |
| * specification. |
| * |
| ******************************************************************************/ |
| |
| char * |
| AcpiOsGetNextFilename ( |
| void *DirHandle) |
| { |
| EXTERNAL_FIND_INFO *ExternalInfo = DirHandle; |
| struct dirent *dir_entry; |
| char *temp_str; |
| int str_len; |
| struct stat temp_stat; |
| int err; |
| |
| |
| while ((dir_entry = readdir (ExternalInfo->DirPtr))) |
| { |
| if (!fnmatch (ExternalInfo->WildcardSpec, dir_entry->d_name, 0)) |
| { |
| if (dir_entry->d_name[0] == '.') |
| { |
| continue; |
| } |
| |
| str_len = strlen (dir_entry->d_name) + |
| strlen (ExternalInfo->DirPathname) + 2; |
| |
| temp_str = calloc (str_len, 1); |
| if (!temp_str) |
| { |
| fprintf (stderr, |
| "Could not allocate buffer for temporary string\n"); |
| return (NULL); |
| } |
| |
| strcpy (temp_str, ExternalInfo->DirPathname); |
| strcat (temp_str, "/"); |
| strcat (temp_str, dir_entry->d_name); |
| |
| err = stat (temp_str, &temp_stat); |
| if (err == -1) |
| { |
| fprintf (stderr, |
| "Cannot stat file (should not happen) - %s\n", |
| temp_str); |
| free (temp_str); |
| return (NULL); |
| } |
| |
| free (temp_str); |
| |
| if ((S_ISDIR (temp_stat.st_mode) |
| && (ExternalInfo->RequestedFileType == REQUEST_DIR_ONLY)) |
| || |
| ((!S_ISDIR (temp_stat.st_mode) |
| && ExternalInfo->RequestedFileType == REQUEST_FILE_ONLY))) |
| { |
| /* copy to a temp buffer because dir_entry struct is on the stack */ |
| |
| strcpy (ExternalInfo->temp_buffer, dir_entry->d_name); |
| return (ExternalInfo->temp_buffer); |
| } |
| } |
| } |
| |
| return (NULL); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiOsCloseDirectory |
| * |
| * PARAMETERS: DirHandle - Created via AcpiOsOpenDirectory |
| * |
| * RETURN: None. |
| * |
| * DESCRIPTION: Close the open directory and cleanup. |
| * |
| ******************************************************************************/ |
| |
| void |
| AcpiOsCloseDirectory ( |
| void *DirHandle) |
| { |
| EXTERNAL_FIND_INFO *ExternalInfo = DirHandle; |
| |
| |
| /* Close the directory and free allocations */ |
| |
| closedir (ExternalInfo->DirPtr); |
| free (DirHandle); |
| } |