dir.c revision bd911976d51f102751848568ccf56592fd5f6d77
a747113422afaa29ce72d2c5ba7f0b7ea9ec2054Evan Hunt/*
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt * Copyright (C) 1999-2001, 2004, 2007-2009, 2011-2013, 2016, 2017 Internet Systems Consortium, Inc. ("ISC")
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt *
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt * This Source Code Form is subject to the terms of the Mozilla Public
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt * License, v. 2.0. If a copy of the MPL was not distributed with this
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt * file, You can obtain one at http://mozilla.org/MPL/2.0/.
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt */
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt/* $Id$ */
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt/* Principal Authors: DCL */
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt#include <config.h>
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt#include <string.h>
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt#include <direct.h>
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt#include <process.h>
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt#include <io.h>
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt#include <sys/stat.h>
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt#include <isc/assertions.h>
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt#include <isc/dir.h>
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt#include <isc/magic.h>
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews#include <isc/print.h>
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews#include <isc/string.h>
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt#include <isc/util.h>
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt#include "errno2result.h"
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews#define ISC_DIR_MAGIC ISC_MAGIC('D', 'I', 'R', '*')
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt#define VALID_DIR(dir) ISC_MAGIC_VALID(dir, ISC_DIR_MAGIC)
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews
ef421f66f47224a42073deaf087378c5d0c9952eEvan Huntstatic isc_result_t
ef421f66f47224a42073deaf087378c5d0c9952eEvan Huntstart_directory(isc_dir_t *p);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Huntvoid
ef421f66f47224a42073deaf087378c5d0c9952eEvan Huntisc_dir_init(isc_dir_t *dir) {
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt REQUIRE(dir != NULL);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt dir->dirname[0] = '\0';
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt dir->entry.name[0] = '\0';
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt dir->entry.length = 0;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt memset(&(dir->entry.find_data), 0, sizeof(dir->entry.find_data));
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt dir->entry_filled = ISC_FALSE;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt dir->search_handle = INVALID_HANDLE_VALUE;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt dir->magic = ISC_DIR_MAGIC;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt}
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt/*
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt * Allocate workspace and open directory stream. If either one fails,
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt * NULL will be returned.
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt */
ef421f66f47224a42073deaf087378c5d0c9952eEvan Huntisc_result_t
ef421f66f47224a42073deaf087378c5d0c9952eEvan Huntisc_dir_open(isc_dir_t *dir, const char *dirname) {
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt char *p;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt isc_result_t result;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt REQUIRE(dirname != NULL);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt REQUIRE(VALID_DIR(dir) && dir->search_handle == INVALID_HANDLE_VALUE);
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt /*
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt * Copy directory name. Need to have enough space for the name,
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews * a possible path separator, the wildcard, and the final NUL.
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt */
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt if (strlen(dirname) + 3 > sizeof(dir->dirname))
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt /* XXXDCL ? */
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt return (ISC_R_NOSPACE);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt strlcpy(dir->dirname, dirname, sizeof(dir->dirname));
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt /*
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt * Append path separator, if needed, and "*".
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt */
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt p = dir->dirname + strlen(dir->dirname);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt if (dir->dirname < p && *(p - 1) != '\\' && *(p - 1) != ':')
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt *p++ = '\\';
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt *p++ = '*';
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt *p = '\0';
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt /*
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt * Open stream.
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt */
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt result = start_directory(dir);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt return (result);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt}
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt/*
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt * Return previously retrieved file or get next one. Unix's dirent has
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt * separate open and read functions, but the Win32 and DOS interfaces open
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt * the dir stream and reads the first file in one operation.
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt */
ef421f66f47224a42073deaf087378c5d0c9952eEvan Huntisc_result_t
ef421f66f47224a42073deaf087378c5d0c9952eEvan Huntisc_dir_read(isc_dir_t *dir) {
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt REQUIRE(VALID_DIR(dir) && dir->search_handle != INVALID_HANDLE_VALUE);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt if (dir->entry_filled)
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt /*
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt * start_directory() already filled in the first entry.
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt */
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt dir->entry_filled = ISC_FALSE;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt else {
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt /*
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt * Fetch next file in directory.
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt */
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt if (FindNextFile(dir->search_handle,
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt &dir->entry.find_data) == FALSE)
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt /*
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt * Either the last file has been processed or
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt * an error has occurred. The former is not
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt * really an error, but the latter is.
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt */
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt if (GetLastError() == ERROR_NO_MORE_FILES)
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt return (ISC_R_NOMORE);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt else
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt return (ISC_R_UNEXPECTED);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt }
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt /*
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt * Make sure that the space for the name is long enough.
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt */
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt strlcpy(dir->entry.name, dir->entry.find_data.cFileName,
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt sizeof(dir->entry.name));
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt dir->entry.length = strlen(dir->entry.name);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt return (ISC_R_SUCCESS);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt}
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt/*
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt * Close directory stream.
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt */
ef421f66f47224a42073deaf087378c5d0c9952eEvan Huntvoid
ef421f66f47224a42073deaf087378c5d0c9952eEvan Huntisc_dir_close(isc_dir_t *dir) {
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt REQUIRE(VALID_DIR(dir) && dir->search_handle != INVALID_HANDLE_VALUE);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt FindClose(dir->search_handle);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt dir->search_handle = INVALID_HANDLE_VALUE;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt}
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt/*
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt * Reposition directory stream at start.
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt */
ef421f66f47224a42073deaf087378c5d0c9952eEvan Huntisc_result_t
ef421f66f47224a42073deaf087378c5d0c9952eEvan Huntisc_dir_reset(isc_dir_t *dir) {
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt isc_result_t result;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt REQUIRE(VALID_DIR(dir) && dir->search_handle != INVALID_HANDLE_VALUE);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt REQUIRE(dir->dirname != NULL);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt /*
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt * NT cannot reposition the seek pointer to the beginning of the
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt * the directory stream, but rather the directory needs to be
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt * closed and reopened. The latter might fail.
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt */
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt isc_dir_close(dir);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt result = start_directory(dir);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt return (result);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt}
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt/*
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt * Initialize isc_dir_t structure with new directory. The function
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt * returns 0 on failure and nonzero on success.
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt *
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt * Note:
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt * - Be sure to close previous stream before opening new one
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt */
ef421f66f47224a42073deaf087378c5d0c9952eEvan Huntstatic isc_result_t
ef421f66f47224a42073deaf087378c5d0c9952eEvan Huntstart_directory(isc_dir_t *dir)
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt{
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt REQUIRE(VALID_DIR(dir));
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt REQUIRE(dir->search_handle == INVALID_HANDLE_VALUE);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt dir->entry_filled = ISC_FALSE;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt /*
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt * Open stream and retrieve first file.
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt */
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt dir->search_handle = FindFirstFile(dir->dirname,
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt &dir->entry.find_data);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt if (dir->search_handle == INVALID_HANDLE_VALUE) {
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt /*
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt * Something went wrong but we don't know what. GetLastError()
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt * could give us more information about the error, but the
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt * MSDN documentation is frustratingly thin about what
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt * possible errors could have resulted. (Score one for
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt * the Unix manual pages.) So there is just this lame error
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt * instead of being able to differentiate ISC_R_NOTFOUND
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt * from ISC_R_UNEXPECTED.
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt */
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt return (ISC_R_FAILURE);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt }
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt /*
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt * Make sure that the space for the name is long enough.
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt */
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt INSIST(sizeof(dir->entry.name) >
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt strlen(dir->entry.find_data.cFileName));
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt /*
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt * Fill in the data for the first entry of the directory.
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt */
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt strlcpy(dir->entry.name, dir->entry.find_data.cFileName,
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt sizeof(dir->entry.name));
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt dir->entry.length = strlen(dir->entry.name);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt dir->entry_filled = ISC_TRUE;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt return (ISC_R_SUCCESS);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt}
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Huntisc_result_t
ef421f66f47224a42073deaf087378c5d0c9952eEvan Huntisc_dir_chdir(const char *dirname) {
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt /*
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt * Change the current directory to 'dirname'.
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt */
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt REQUIRE(dirname != NULL);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt if (chdir(dirname) < 0)
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt return (isc__errno2result(errno));
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt return (ISC_R_SUCCESS);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt}
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Huntisc_result_t
ef421f66f47224a42073deaf087378c5d0c9952eEvan Huntisc_dir_chroot(const char *dirname) {
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt return (ISC_R_NOTIMPLEMENTED);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt}
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Huntisc_result_t
ef421f66f47224a42073deaf087378c5d0c9952eEvan Huntisc_dir_createunique(char *templet) {
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt isc_result_t result;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt char *x;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt char *p;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt int i;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt int pid;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt REQUIRE(templet != NULL);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt /*
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt * mkdtemp is not portable, so this emulates it.
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt */
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt pid = getpid();
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt /*
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt * Replace trailing Xs with the process-id, zero-filled.
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt */
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt for (x = templet + strlen(templet) - 1; *x == 'X' && x >= templet;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt x--, pid /= 10)
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt *x = pid % 10 + '0';
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt x++; /* Set x to start of ex-Xs. */
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt do {
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt i = mkdir(templet);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt if (i == 0)
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt i = chmod(templet, 0700);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt if (i == 0 || errno != EEXIST)
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt break;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt /*
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt * The BSD algorithm.
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt */
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt p = x;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt while (*p != '\0') {
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt if (isdigit(*p & 0xff))
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt *p = 'a';
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt else if (*p != 'z')
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt ++*p;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt else {
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt /*
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt * Reset character and move to next.
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt */
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt *p++ = 'a';
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt continue;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt }
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt break;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt }
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt if (*p == '\0') {
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt /*
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt * Tried all combinations. errno should already
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt * be EEXIST, but ensure it is anyway for
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt * isc__errno2result().
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt */
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt errno = EEXIST;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt break;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt }
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt } while (1);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt if (i == -1)
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt result = isc__errno2result(errno);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt else
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt result = ISC_R_SUCCESS;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt return (result);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt}
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt