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/*
Copyright (C) 2011 ABRT team
Copyright (C) 2011 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 "abrtlib.h"
#include "parse_options.h"
#define PROGNAME "abrt-action-trim-files"
static double get_dir_size(const char *dirname,
char **worst_file,
double *worst_file_size)
{
DIR *dp = opendir(dirname);
if (!dp)
return 0;
/* "now" is used only if caller wants to know worst_file */
time_t now = worst_file ? time(NULL) : 0;
struct dirent *dent;
struct stat stats;
double size = 0;
while ((dent = readdir(dp)) != NULL)
{
if (dot_or_dotdot(dent->d_name))
continue;
char *fullname = concat_path_file(dirname, dent->d_name);
if (lstat(fullname, &stats) != 0)
{
free(fullname);
continue;
}
if (S_ISDIR(stats.st_mode))
{
double sz = get_dir_size(fullname, worst_file, worst_file_size);
size += sz;
}
else if (S_ISREG(stats.st_mode))
{
double sz = stats.st_size;
size += sz;
if (worst_file)
{
/* Calculate "weighted" size and age
* w = sz_kbytes * age_mins */
sz /= 1024;
long age = (now - stats.st_mtime) / 60;
if (age > 0)
sz *= age;
if (sz > *worst_file_size)
{
*worst_file_size = sz;
free(*worst_file);
*worst_file = fullname;
fullname = NULL;
}
}
}
free(fullname);
}
closedir(dp);
return size;
}
static const char *parse_size_pfx(double *size, const char *str)
{
errno = (isdigit(str[0]) ? 0 : ERANGE);
char *end;
*size = strtoull(str, &end, 10);
if (end != str)
{
char c = (*end | 0x20); /* lowercasing */
if (c == 'k')
end++, *size *= 1024;
else if (c == 'm')
end++, *size *= 1024*1024;
else if (c == 'g')
end++, *size *= 1024*1024*1024;
else if (c == 't')
end++, *size *= 1024.0*1024*1024*1024;
}
if (errno || end == str || *end != ':')
perror_msg_and_die("Bad size prefix in '%s'", str);
return end + 1;
}
static void delete_dirs(gpointer data, gpointer exclude_path)
{
double cap_size;
const char *dir = parse_size_pfx(&cap_size, data);
trim_debug_dumps(dir, cap_size, exclude_path);
}
static void delete_files(gpointer data, gpointer user_data_unused)
{
double cap_size;
const char *dir = parse_size_pfx(&cap_size, data);
unsigned count = 1000;
while (--count != 0)
{
char *worst_file = NULL;
double worst_file_size = 0;
double cur_size = get_dir_size(dir, &worst_file, &worst_file_size);
if (cur_size <= cap_size)
{
VERB2 log("cur_size:%f cap_size:%f, no (more) trimming", cur_size, cap_size);
free(worst_file);
break;
}
log("%s is %.0f bytes (more than %.0f MB), deleting '%s'",
dir, cur_size, cap_size / (1024*1024), worst_file);
if (unlink(worst_file) != 0)
perror_msg("Can't unlink '%s'", worst_file);
free(worst_file);
}
}
int main(int argc, char **argv)
{
char *env_verbose = getenv("ABRT_VERBOSE");
if (env_verbose)
g_verbose = atoi(env_verbose);
GList *dir_list = NULL;
GList *file_list = NULL;
char *preserve = NULL;
/* Can't keep these strings/structs static: _() doesn't support that */
const char *program_usage_string = _(
PROGNAME" [-v] [-d SIZE:DIR]... [-f SIZE:DIR]... [-p DIR]\n"
"\n"
"Deletes dump dirs (-d) or files (-f) in DIRs until they are smaller than SIZE"
);
enum {
OPT_v = 1 << 0,
OPT_d = 1 << 1,
OPT_f = 1 << 2,
OPT_p = 1 << 3,
};
/* Keep enum above and order of options below in sync! */
struct options program_options[] = {
OPT__VERBOSE(&g_verbose),
OPT_LIST( 'd', NULL, &dir_list , "SIZE:DIR", _("Delete dump dirs")),
OPT_LIST( 'f', NULL, &file_list, "SIZE:DIR", _("Delete files")),
OPT_STRING('p', NULL, &preserve , "DIR" , _("Preserve this dump dir")),
OPT_END()
};
/*unsigned opts =*/ parse_opts(argc, argv, program_options, program_usage_string);
argv += optind;
if (argv[0] || !(dir_list || file_list))
show_usage_and_die(program_usage_string, program_options);
putenv(xasprintf("ABRT_VERBOSE=%u", g_verbose));
char *pfx = getenv("ABRT_PROG_PREFIX");
if (pfx && string_to_bool(pfx))
msg_prefix = PROGNAME;
g_list_foreach(dir_list, delete_dirs, preserve);
g_list_foreach(file_list, delete_files, NULL);
return 0;
}
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