core-agent-linux/common/copy_file.c
Marek Marczykowski f564a4d143 dom0+vm: Tools for downloading dom0 update by VM (#198)
Mainly 4 parts:
 - scripts for providing rpmdb and yum repos to VM (choosen by qvm-set-updatevm)
 - VM script for downloading updates (qubes_download_dom0_updates.sh)
 - qfile-dom0-unpacker which receive updates, check signatures and place its in dom0 local yum repo
 - qvm-dom0-upgrade which calls all of above and after all yum gpk-update-viewer

Besides qvm-dom0-upgrade, updates are checked every 6h and user is prompted if
want to download it. At dom0 side gpk-update-icon (disabled yet) should notice
new updates in "local" repo.
2011-06-22 00:44:48 +02:00

45 lines
1.0 KiB
C

#include <unistd.h>
#include <ioall.h>
#include "filecopy.h"
#include "crc32.h"
extern void notify_progress(int, int);
int copy_file(int outfd, int infd, long long size, unsigned long *crc32)
{
char buf[4096];
long long written = 0;
int ret;
int count;
while (written < size) {
if (size - written > sizeof(buf))
count = sizeof buf;
else
count = size - written;
ret = read(infd, buf, count);
if (!ret)
return COPY_FILE_READ_EOF;
if (ret < 0)
return COPY_FILE_READ_ERROR;
/* acumulate crc32 if requested */
if (crc32)
*crc32 = Crc32_ComputeBuf(*crc32, buf, ret);
if (!write_all(outfd, buf, ret))
return COPY_FILE_WRITE_ERROR;
notify_progress(ret, 0);
written += ret;
}
return COPY_FILE_OK;
}
char * copy_file_status_to_str(int status)
{
switch (status) {
case COPY_FILE_OK: return "OK";
case COPY_FILE_READ_EOF: return "Unexpected end of data while reading";
case COPY_FILE_READ_ERROR: return "Error reading";
case COPY_FILE_WRITE_ERROR: return "Error writing";
default: return "????????";
}
}