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/*
* diskspace.c
*
* Copyright (c) 2010 Pacman Development Team <pacman-dev@archlinux.org>
*
* 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/>.
*/
#include "config.h"
#if defined HAVE_GETMNTENT
#include <mntent.h>
#include <sys/statvfs.h>
#elif defined HAVE_GETMNTINFO_STATFS
#include <sys/param.h>
#include <sys/mount.h>
#if HAVE_SYS_UCRED_H
#include <sys/ucred.h>
#endif
#elif defined HAVE_GETMNTINFO_STATVFS
#include <sys/types.h>
#include <sys/statvfs.h>
#endif
/* libalpm */
#include "diskspace.h"
#include "alpm_list.h"
#include "util.h"
#include "log.h"
#include "handle.h"
static int mount_point_cmp(const alpm_mountpoint_t *mp1, const alpm_mountpoint_t *mp2)
{
return(strcmp(mp1->mount_dir, mp2->mount_dir));
}
static alpm_list_t *mount_point_list()
{
alpm_list_t *mount_points = NULL;
alpm_mountpoint_t *mp;
#if defined HAVE_GETMNTENT
struct mntent *mnt;
FILE *fp;
struct statvfs fsp;
fp = setmntent(MOUNTED, "r");
if (fp == NULL) {
return NULL;
}
while((mnt = getmntent (fp))) {
if(statvfs(mnt->mnt_dir, &fsp) != 0) {
_alpm_log(PM_LOG_WARNING, "could not get filesystem information for %s\n", mnt->mnt_dir);
continue;
}
MALLOC(mp, sizeof(alpm_mountpoint_t), RET_ERR(PM_ERR_MEMORY, NULL));
mp->mount_dir = strdup(mnt->mnt_dir);
MALLOC(mp->fsp, sizeof(struct statvfs), RET_ERR(PM_ERR_MEMORY, NULL));
memcpy((void *)(mp->fsp), (void *)(&fsp), sizeof(struct statvfs));
mp->blocks_needed = 0;
mp->max_blocks_needed = 0;
mp->used = 0;
mount_points = alpm_list_add(mount_points, mp);
}
endmntent(fp);
#elif defined HAVE_GETMNTINFO_STATFS
int entries;
struct statfs *fsp;
entries = getmntinfo(&fsp, MNT_NOWAIT);
if (entries < 0) {
return NULL;
}
for(; entries-- > 0; fsp++) {
MALLOC(mp, sizeof(alpm_mountpoint_t), RET_ERR(PM_ERR_MEMORY, NULL));
mp->mount_dir = strdup(fsp->f_mntonname);
MALLOC(mp->fsp, sizeof(struct statfs), RET_ERR(PM_ERR_MEMORY, NULL));
memcpy((void *)(mp->fsp), (void *)fsp, sizeof(struct statfs));
mp->blocks_needed = 0;
mp->max_blocks_needed = 0;
mount_points = alpm_list_add(mount_points, mp);
}
#elif defined HAVE_GETMNTINFO_STATVFS
int entries;
struct statvfs *fsp;
entries = getmntinfo(&fsp, MNT_NOWAIT);
if (entries < 0) {
return NULL;
}
for (; entries-- > 0; fsp++) {
MALLOC(mp, sizeof(alpm_mountpoint_t), RET_ERR(PM_ERR_MEMORY, NULL));
mp->mount_dir = strdup(fsp->f_mntonname);
MALLOC(mp->fsp, sizeof(struct statvfs), RET_ERR(PM_ERR_MEMORY, NULL));
memcpy((void *)(mp->fsp), (void *)fsp, sizeof(struct statvfs));
mp->blocks_needed = 0;
mp->max_blocks_needed = 0;
mount_points = alpm_list_add(mount_points, mp);
}
#endif
mount_points = alpm_list_msort(mount_points, alpm_list_count(mount_points),
(alpm_list_fn_cmp)mount_point_cmp);
return(mount_points);
}
static alpm_list_t *match_mount_point(const alpm_list_t *mount_points, const char *file)
{
char real_path[PATH_MAX];
snprintf(real_path, PATH_MAX, "%s%s", handle->root, file);
alpm_list_t *mp = alpm_list_last(mount_points);
do {
alpm_mountpoint_t *data = mp->data;
if(strncmp(data->mount_dir, real_path, strlen(data->mount_dir)) == 0) {
return mp;
}
mp = mp->prev;
} while (mp != alpm_list_last(mount_points));
/* should not get here... */
return NULL;
}
int _alpm_check_diskspace(pmtrans_t *trans, pmdb_t *db)
{
alpm_list_t *mount_points;
mount_points = mount_point_list();
if(mount_points == NULL) {
_alpm_log(PM_LOG_ERROR, _("count not determine filesystem mount points"));
return -1;
}
for(i = mount_points; i; i = alpm_list_next(i)) {
alpm_mountpoint_t *data = i->data;
FREE(data->mount_dir);
FREE(data->fsp);
}
FREELIST(mount_points);
return 0;
}
/* vim: set ts=2 sw=2 noet: */
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