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/*
* Copyright (c) 2000-2001 Silicon Graphics, Inc.
* All Rights Reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it would be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <sys/stat.h>
#include <limits.h>
#include <errno.h>
#include <fcntl.h>
#include <assert.h>
#include <string.h>
#include "config.h"
#include "types.h"
#include "mlog.h"
char *
open_pathalloc(char *dirname, char *basename, pid_t pid)
{
size_t dirlen;
size_t pidlen;
size_t namelen;
char *namebuf;
if (strcmp(dirname, "/")) {
dirlen = strlen(dirname);
} else {
dirlen = 0;
dirname = "";
}
/*
* We could calculate the length of pid string
* = trunc(log10(pid))+1,
* but we are restricted to 32 bits for pid anyway.
* 32 bits => trunc(log10(2^32))+1 = 10
* And if it ever became 64 bits,
* 64 bits => trunc(log10(2^64))+1 = 20
*/
if (pid) {
pidlen = 1 + 20;
} else {
pidlen = 0;
}
namelen = dirlen + 1 + strlen(basename) + pidlen + 1;
namebuf = (char *)calloc(1, namelen);
assert(namebuf);
if (pid) {
(void )snprintf(namebuf, namelen, "%s/%s.%d", dirname, basename, pid);
} else {
(void )snprintf(namebuf, namelen, "%s/%s", dirname, basename);
}
return namebuf;
}
int
open_trwp(char *pathname)
{
int fd;
fd = open(pathname, O_CREAT | O_TRUNC | O_RDWR, S_IRUSR | S_IWUSR);
if (fd < 0) {
mlog(MLOG_NORMAL,
_("could not create %s: %s\n"),
pathname,
strerror(errno));
}
return fd;
}
int
open_erwp(char *pathname)
{
int fd;
fd = open(pathname, O_EXCL | O_CREAT | O_RDWR, S_IRUSR | S_IWUSR);
if (fd < 0) {
mlog(MLOG_NORMAL,
_("could not create %s: %s\n"),
pathname,
strerror(errno));
}
return fd;
}
int
open_rwp(char *pathname)
{
int fd;
fd = open(pathname, O_RDWR);
return fd;
}
int
mkdir_tp(char *pathname)
{
int rval;
rval = mkdir(pathname, S_IRWXU);
return rval;
}
int
open_trwdb(char *dirname, char *basename, pid_t pid)
{
char *pathname;
int fd;
pathname = open_pathalloc(dirname, basename, pid);
fd = open_trwp(pathname);
free((void *)pathname);
return fd;
}
int
open_erwdb(char *dirname, char *basename, pid_t pid)
{
char *pathname;
int fd;
pathname = open_pathalloc(dirname, basename, pid);
fd = open_erwp(pathname);
free((void *)pathname);
return fd;
}
int
open_rwdb(char *dirname, char *basename, pid_t pid)
{
char *pathname;
int fd;
pathname = open_pathalloc(dirname, basename, pid);
fd = open_rwp(pathname);
free((void *)pathname);
return fd;
}
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