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/*___INFO__MARK_BEGIN__*/
/*************************************************************************
*
* The Contents of this file are made available subject to the terms of
* the Sun Industry Standards Source License Version 1.2
*
* Sun Microsystems Inc., March, 2001
*
*
* Sun Industry Standards Source License Version 1.2
* =================================================
* The contents of this file are subject to the Sun Industry Standards
* Source License Version 1.2 (the "License"); You may not use this file
* except in compliance with the License. You may obtain a copy of the
* License at http://gridengine.sunsource.net/Gridengine_SISSL_license.html
*
* Software provided under this License is provided on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
* WITHOUT LIMITATION, WARRANTIES THAT THE SOFTWARE IS FREE OF DEFECTS,
* MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE, OR NON-INFRINGING.
* See the License for the specific provisions governing your rights and
* obligations concerning the Software.
*
* The Initial Developer of the Original Code is: Sun Microsystems, Inc.
*
* Copyright: 2003 by Sun Microsystems, Inc.
*
* All Rights Reserved.
*
************************************************************************/
/*___INFO__MARK_END__*/
#include "uti/sge_tmpnam.h"
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <fcntl.h>
#include <string.h>
#include <errno.h>
#include <sys/stat.h>
#include <sys/time.h>
#include "uti/sge_rmon.h"
#include "uti/sge_dstring.h"
#include "uti/sge_string.h"
#include "uti/sge_unistd.h"
#include "uti/msg_utilib.h"
#include "basis_types.h"
static int elect_path(dstring *aBuffer);
static int spawn_file(dstring *aBuffer, dstring *error_message);
/****** uti/sge_tmpnam/sge_mkstemp() *******************************************
* NAME
* sge_mkstemp() -- SGE version of mkstemp()
*
* SYNOPSIS
* int sge_mkstemp(char *aBuffer, size_t size, dstring *error_message)
*
* FUNCTION
* SGE-specific version of mkstemp(3) that tries TMPDIR as well as
* P_tmpdir before /tmp, returns an error message, and guarantees
* read and write access for the user only.
*
* The 'aBuffer' argument points to an array of at least
* 'size' in length. 'aBuffer' will contain the generated
* filename upon successful completion, and the file descriptor for
* the opened file is returned. If the function fails, -1 will be
* returned, with an error message in error_message.
*
* INPUTS
* char *aBuffer - Array to hold filename
* size_t size - size of aBuffer
* dstring error_message - Error message
*
* RESULT
* char* - Points to 'aBuffer' if successful, NULL otherwise
*
* NOTE
* MT-NOTE: sge_mkstemp() is MT safe.
******************************************************************************/
int sge_mkstemp(char *aBuffer, size_t size, dstring *error_message)
{
dstring s = DSTRING_INIT;
int fd;
DENTER(TOP_LAYER, "sge_mkstemp");
if (aBuffer == NULL) {
sge_dstring_sprintf(error_message, "%s", MSG_TMPNAM_GOT_NULL_PARAMETER);
DEXIT;
return -1;
}
if (elect_path(&s) < 0) {
sge_dstring_sprintf(error_message, "%s", MSG_TMPNAM_CANNOT_GET_TMP_PATH);
sge_dstring_free(&s);
DEXIT;
return -1;
}
if ((sge_dstring_get_string(&s))[sge_dstring_strlen(&s)-1] != '/') {
sge_dstring_append_char(&s, '/');
}
if ((fd = spawn_file(&s, error_message)) < 0) {
sge_dstring_free(&s);
DEXIT;
return -1;
}
sge_strlcpy(aBuffer, sge_dstring_get_string(&s), size);
sge_dstring_free(&s);
DPRINTF(("sge_mkstemp: returning %s\n", aBuffer));
DEXIT;
return fd;
}
static int elect_path(dstring *aBuffer)
{
const char *d;
d = getenv("TMPDIR");
if ((d != NULL) && sge_is_directory(d)) {
sge_dstring_append(aBuffer, d);
return 0;
} else if (sge_is_directory(P_tmpdir)) {
sge_dstring_append(aBuffer, P_tmpdir);
return 0;
} else if (sge_is_directory("/tmp")) {
sge_dstring_append(aBuffer, "/tmp/");
return 0;
}
return -1;
}
static int spawn_file(dstring *aBuffer, dstring *error_message) {
int my_errno;
int mkstemp_return;
char tmp_file_string[256];
char tmp_string[SGE_PATH_MAX];
/*
* generate template filename for mkstemp()
*/
snprintf(tmp_file_string, 256, "pid-%u-XXXXXX", (unsigned int)getpid());
/*
* check final length of path
*/
if (sge_dstring_strlen(aBuffer) + strlen(tmp_file_string) >= SGE_PATH_MAX) {
sge_dstring_append(aBuffer, tmp_file_string);
sge_dstring_sprintf(error_message, MSG_TMPNAM_SGE_MAX_PATH_LENGTH_US,
sge_u32c(SGE_PATH_MAX), sge_dstring_get_string(aBuffer));
return -1;
}
/*
* now build full path string for mkstemp()
*/
snprintf(tmp_string, SGE_PATH_MAX, "%s%s", sge_dstring_get_string(aBuffer), tmp_file_string);
/*
* generate temp file by call to mkstemp()
*/
errno = 0;
mkstemp_return = mkstemp(tmp_string);
my_errno = errno;
if (-1 == mkstemp_return
/* POSIX doesn't guarantee the mode. */
|| fchmod(mkstemp_return, 0600)) {
sge_dstring_sprintf(error_message, MSG_TMPNAM_GOT_SYSTEM_ERROR_SS,
strerror(my_errno),
sge_dstring_get_string(aBuffer));
return -1;
}
/*
* finally copy the resulting path to aBuffer
*/
sge_dstring_sprintf(aBuffer, "%s", tmp_string);
return mkstemp_return;
}
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