1 /******************************************************************************
2 *
3 * Module Name: osunixdir - Unix directory access interfaces
4 *
5 *****************************************************************************/
6
7 /*
8 * Copyright (C) 2000 - 2014, Intel Corp.
9 * All rights reserved.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions, and the following disclaimer,
16 * without modification.
17 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
18 * substantially similar to the "NO WARRANTY" disclaimer below
19 * ("Disclaimer") and any redistribution must be conditioned upon
20 * including a substantially similar Disclaimer requirement for further
21 * binary redistribution.
22 * 3. Neither the names of the above-listed copyright holders nor the names
23 * of any contributors may be used to endorse or promote products derived
24 * from this software without specific prior written permission.
25 *
26 * Alternatively, this software may be distributed under the terms of the
27 * GNU General Public License ("GPL") version 2 as published by the Free
28 * Software Foundation.
29 *
30 * NO WARRANTY
31 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
32 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
33 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
34 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
35 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
36 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
37 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
38 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
39 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
40 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
41 * POSSIBILITY OF SUCH DAMAGES.
42 */
43
44 #include <acpi.h>
45
46 #include <stdio.h>
47 #include <stdlib.h>
48 #include <string.h>
49 #include <dirent.h>
50 #include <fnmatch.h>
51 #include <ctype.h>
52 #include <sys/stat.h>
53
54 /*
55 * Allocated structure returned from OsOpenDirectory
56 */
57 typedef struct ExternalFindInfo
58 {
59 char *DirPathname;
60 DIR *DirPtr;
61 char temp_buffer[256];
62 char *WildcardSpec;
63 char RequestedFileType;
64
65 } EXTERNAL_FIND_INFO;
66
67
68 /*******************************************************************************
69 *
70 * FUNCTION: AcpiOsOpenDirectory
71 *
72 * PARAMETERS: DirPathname - Full pathname to the directory
73 * WildcardSpec - string of the form "*.c", etc.
74 *
75 * RETURN: A directory "handle" to be used in subsequent search operations.
76 * NULL returned on failure.
77 *
78 * DESCRIPTION: Open a directory in preparation for a wildcard search
79 *
80 ******************************************************************************/
81
82 void *
83 AcpiOsOpenDirectory (
84 char *DirPathname,
85 char *WildcardSpec,
86 char RequestedFileType)
87 {
88 EXTERNAL_FIND_INFO *ExternalInfo;
89 DIR *dir;
90
91
92 /* Allocate the info struct that will be returned to the caller */
93
94 ExternalInfo = calloc (1, sizeof (EXTERNAL_FIND_INFO));
95 if (!ExternalInfo)
96 {
97 return (NULL);
98 }
99
100 /* Get the directory stream */
101
102 dir = opendir (DirPathname);
103 if (!dir)
104 {
105 fprintf (stderr, "Cannot open directory - %s\n", DirPathname);
106 free (ExternalInfo);
107 return (NULL);
108 }
109
110 /* Save the info in the return structure */
111
112 ExternalInfo->WildcardSpec = WildcardSpec;
113 ExternalInfo->RequestedFileType = RequestedFileType;
114 ExternalInfo->DirPathname = DirPathname;
115 ExternalInfo->DirPtr = dir;
116 return (ExternalInfo);
117 }
118
119
120 /*******************************************************************************
121 *
122 * FUNCTION: AcpiOsGetNextFilename
123 *
124 * PARAMETERS: DirHandle - Created via AcpiOsOpenDirectory
125 *
126 * RETURN: Next filename matched. NULL if no more matches.
127 *
128 * DESCRIPTION: Get the next file in the directory that matches the wildcard
129 * specification.
130 *
131 ******************************************************************************/
132
133 char *
134 AcpiOsGetNextFilename (
135 void *DirHandle)
136 {
137 EXTERNAL_FIND_INFO *ExternalInfo = DirHandle;
138 struct dirent *dir_entry;
139 char *temp_str;
140 int str_len;
141 struct stat temp_stat;
142 int err;
143
144
145 while ((dir_entry = readdir (ExternalInfo->DirPtr)))
146 {
147 if (!fnmatch (ExternalInfo->WildcardSpec, dir_entry->d_name, 0))
148 {
149 if (dir_entry->d_name[0] == '.')
150 {
151 continue;
152 }
153
154 str_len = strlen (dir_entry->d_name) +
155 strlen (ExternalInfo->DirPathname) + 2;
156
157 temp_str = calloc (str_len, 1);
158 if (!temp_str)
159 {
160 fprintf (stderr,
161 "Could not allocate buffer for temporary string\n");
162 return (NULL);
163 }
164
165 strcpy (temp_str, ExternalInfo->DirPathname);
166 strcat (temp_str, "/");
167 strcat (temp_str, dir_entry->d_name);
168
169 err = stat (temp_str, &temp_stat);
170 if (err == -1)
171 {
172 fprintf (stderr,
173 "Cannot stat file (should not happen) - %s\n",
174 temp_str);
175 free (temp_str);
176 return (NULL);
177 }
178
179 free (temp_str);
180
181 if ((S_ISDIR (temp_stat.st_mode)
182 && (ExternalInfo->RequestedFileType == REQUEST_DIR_ONLY))
183 ||
184 ((!S_ISDIR (temp_stat.st_mode)
185 && ExternalInfo->RequestedFileType == REQUEST_FILE_ONLY)))
186 {
187 /* copy to a temp buffer because dir_entry struct is on the stack */
188
189 strcpy (ExternalInfo->temp_buffer, dir_entry->d_name);
190 return (ExternalInfo->temp_buffer);
191 }
192 }
193 }
194
195 return (NULL);
196 }
197
198
199 /*******************************************************************************
200 *
201 * FUNCTION: AcpiOsCloseDirectory
202 *
203 * PARAMETERS: DirHandle - Created via AcpiOsOpenDirectory
204 *
205 * RETURN: None.
206 *
207 * DESCRIPTION: Close the open directory and cleanup.
208 *
209 ******************************************************************************/
210
211 void
212 AcpiOsCloseDirectory (
213 void *DirHandle)
214 {
215 EXTERNAL_FIND_INFO *ExternalInfo = DirHandle;
216
217
218 /* Close the directory and free allocations */
219
220 closedir (ExternalInfo->DirPtr);
221 free (DirHandle);
222 }