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/*
* loadermisc.c - miscellaneous loader functions that don't seem to fit
* anywhere else (yet) (was misc.c)
* JKFIXME: need to break out into reasonable files based on function
*
* Copyright (C) 1999, 2000, 2001, 2002 Red Hat, 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; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will 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, see <http://www.gnu.org/licenses/>.
*
* Author(s): Erik Troan <ewt@redhat.com>
* Matt Wilson <msw@redhat.com>
* Michael Fulbright <msf@redhat.com>
* Jeremy Katz <katzj@redhat.com>
*/
#include <ctype.h>
#include <errno.h>
#include <fcntl.h>
#include <string.h>
#include <unistd.h>
#include <stdarg.h>
#include <stdlib.h>
#include "log.h"
#include "windows.h"
int copyFileFd(int infd, char * dest, progressCB pbcb,
struct progressCBdata *data, long long total) {
int outfd;
char buf[4096];
int i;
int rc = 0;
long long count = 0;
outfd = open(dest, O_CREAT | O_RDWR, 0666);
if (outfd < 0) {
logMessage(ERROR, "failed to open %s: %m", dest);
return 1;
}
while ((i = read(infd, buf, sizeof(buf))) > 0) {
if (write(outfd, buf, i) != i) {
rc = 1;
break;
}
count += i;
if (pbcb && data && total) {
pbcb(data, count, total);
}
}
close(outfd);
return rc;
}
int copyFile(char * source, char * dest) {
int infd = -1;
int rc;
infd = open(source, O_RDONLY);
if (infd < 0) {
logMessage(ERROR, "failed to open %s: %m", source);
return 1;
}
rc = copyFileFd(infd, dest, NULL, NULL, 0);
close(infd);
return rc;
}
int simpleStringCmp(const void * a, const void * b) {
const char * first = *((const char **) a);
const char * second = *((const char **) b);
return strverscmp(first, second);
}
/* look for available memory. note: won't ever report more than the
* 900 megs or so supported by the -BOOT kernel due to not using e820 */
int totalMemory(void) {
int fd;
int bytesRead;
char buf[4096];
char * chptr, * start;
int total = 0;
fd = open("/proc/meminfo", O_RDONLY);
if (fd < 0) {
logMessage(ERROR, "failed to open /proc/meminfo: %m");
return 0;
}
bytesRead = read(fd, buf, sizeof(buf) - 1);
if (bytesRead < 0) {
logMessage(ERROR, "failed to read from /proc/meminfo: %m");
close(fd);
return 0;
}
close(fd);
buf[bytesRead] = '\0';
chptr = buf;
while (*chptr && !total) {
if (strncmp(chptr, "MemTotal:", 9)) {
chptr++;
continue;
}
start = ++chptr ;
while (*chptr && *chptr != '\n') chptr++;
*chptr = '\0';
while (!isdigit(*start) && *start) start++;
if (!*start) {
logMessage(WARNING, "no number appears after MemTotal tag");
return 0;
}
chptr = start;
while (*chptr && isdigit(*chptr)) {
total = (total * 10) + (*chptr - '0');
chptr++;
}
}
logMessage(INFO, "%d kB are available", total);
return total;
}
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