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/*
Copyright (C) 2009 RedHat inc.
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, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "libreport.h"
#include "hooklib.h"
#include <sys/statvfs.h>
void check_free_space(unsigned setting_MaxCrashReportsSize)
{
struct statvfs vfs;
if (statvfs(DEBUG_DUMPS_DIR, &vfs) != 0)
{
perror_msg_and_die("statvfs('%s')", DEBUG_DUMPS_DIR);
}
/* Check that at least MaxCrashReportsSize/4 MBs are free */
/* fs_free_mb_x4 ~= vfs.f_bfree * vfs.f_bsize * 4, expressed in MBytes.
* Need to neither overflow nor round f_bfree down too much. */
unsigned long fs_free_mb_x4 = ((unsigned long long)vfs.f_bfree / (1024/4)) * vfs.f_bsize / 1024;
if (fs_free_mb_x4 < setting_MaxCrashReportsSize)
{
error_msg_and_die("aborting dump: only %luMiB is available on %s", fs_free_mb_x4 / 4, DEBUG_DUMPS_DIR);
}
}
/* rhbz#539551: "abrt going crazy when crashing process is respawned".
* Check total size of dump dir, if it overflows,
* delete oldest/biggest dumps.
*/
void trim_debug_dumps(const char *dirname, double cap_size, const char *exclude_path)
{
const char *excluded_basename = NULL;
if (exclude_path)
{
unsigned len_dirname = strlen(dirname);
/* Trim trailing '/'s, but dont trim name "/" to "" */
while (len_dirname > 1 && dirname[len_dirname-1] == '/')
len_dirname--;
if (strncmp(dirname, exclude_path, len_dirname) == 0
&& exclude_path[len_dirname] == '/'
) {
/* exclude_path is "dirname/something" */
excluded_basename = exclude_path + len_dirname + 1;
}
}
VERB3 log("excluded_basename:'%s'", excluded_basename);
int count = 20;
while (--count >= 0)
{
/* We exclude our own dump from candidates for deletion (3rd param): */
char *worst_basename = NULL;
double cur_size = get_dirsize_find_largest_dir(dirname, &worst_basename, excluded_basename);
if (cur_size <= cap_size || !worst_basename)
{
VERB2 log("cur_size:%f cap_size:%f, no (more) trimming", cur_size, cap_size);
free(worst_basename);
break;
}
log("%s is %.0f bytes (more than %.0f MB), deleting '%s'",
dirname, cur_size, cap_size / (1024*1024), worst_basename);
char *d = concat_path_file(dirname, worst_basename);
free(worst_basename);
delete_dump_dir(d);
free(d);
}
}
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