about summary refs log tree commit diff
path: root/db2/os/db_os_dir.c
blob: 1206e3faa74989aea9d51382a633d3430dd4cd87 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
/*-
 * See the file LICENSE for redistribution information.
 *
 * Copyright (c) 1997
 *	Sleepycat Software.  All rights reserved.
 */

#include "config.h"

#ifndef lint
static const char sccsid[] = "@(#)db_os_dir.c	10.10 (Sleepycat) 9/17/97";
#endif /* not lint */

#ifndef NO_SYSTEM_INCLUDES
#include <sys/types.h>

#if HAVE_DIRENT_H
# include <dirent.h>
# define NAMLEN(dirent) strlen((dirent)->d_name)
#else
# define dirent direct
# define NAMLEN(dirent) (dirent)->d_namlen
# if HAVE_SYS_NDIR_H
#  include <sys/ndir.h>
# endif
# if HAVE_SYS_DIR_H
#  include <sys/dir.h>
# endif
# if HAVE_NDIR_H
#  include <ndir.h>
# endif
#endif

#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#endif

#include "db_int.h"
#include "os_ext.h"
#include "common_ext.h"

/*
 * __db_dir --
 *	Return a list of the files in a directory.
 *
 * PUBLIC: int __db_dir __P((DB_ENV *, const char *, char ***, int *));
 */
int
__db_dir(dbenv, dir, namesp, cntp)
	DB_ENV *dbenv;
	const char *dir;
	char ***namesp;
	int *cntp;
{
	int arraysz, cnt;
	char **names;
#ifdef _WIN32
	struct _finddata_t fdata;
	long dirhandle;
	int finished;
	char filespec[MAX_PATH];

	(void)snprintf(filespec, sizeof(filespec), "%s/*", dir);
	if ((dirhandle = _findfirst(filespec, &fdata)) == -1) {
		__db_err(dbenv, "%s: %s", filespec, strerror(errno));
		return (errno);
	}

	names = NULL;
	finished = 0;
	for (arraysz = cnt = 0; finished != 1; ++cnt) {
		if (cnt >= arraysz) {
			arraysz += 100;
			names = (char **)(names == NULL ?
			    malloc(arraysz * sizeof(names[0])) :
			    realloc(names, arraysz * sizeof(names[0])));
			if (names == NULL)
				goto nomem;
		}
		if ((names[cnt] = (char *)strdup(fdata.name)) == NULL)
			goto nomem;
		if (_findnext(dirhandle,&fdata) != 0)
			finished = 1;
	}
	_findclose(dirhandle);
#else /* !_WIN32 */
	struct dirent *dp;
	DIR *dirp;

	if ((dirp = opendir(dir)) == NULL) {
		__db_err(dbenv, "%s: %s", dir, strerror(errno));
		return (errno);
	}
	names = NULL;
	for (arraysz = cnt = 0; (dp = readdir(dirp)) != NULL; ++cnt) {
		if (cnt >= arraysz) {
			arraysz += 100;
			names = (char **)(names == NULL ?
			    malloc(arraysz * sizeof(names[0])) :
			    realloc(names, arraysz * sizeof(names[0])));
			if (names == NULL)
				goto nomem;
		}
		if ((names[cnt] = (char *)strdup(dp->d_name)) == NULL)
			goto nomem;
	}
	(void)closedir(dirp);
#endif /* !_WIN32 */

	*namesp = names;
	*cntp = cnt;
	return (0);

nomem:	if (names != NULL)
		__db_dirf(dbenv, names, cnt);
	__db_err(dbenv, "%s", strerror(ENOMEM));
	return (ENOMEM);
}

/*
 * __db_dirf --
 *	Free the list of files.
 *
 * PUBLIC: void __db_dirf __P((DB_ENV *, char **, int));
 */
void
__db_dirf(dbenv, names, cnt)
	DB_ENV *dbenv;
	char **names;
	int cnt;
{
	dbenv = dbenv;			/* XXX: Shut the compiler up. */
	while (cnt > 0)
		free(names[--cnt]);
	free (names);
}