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transmission/libtransmission/platform-quota.c
Jordan Lee 3e4ceecf03 #4160: mike.dld patch: 4160-06-misc.patch
2014-09-21 18:03:13 +00:00

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8.3 KiB
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/*
* This file Copyright (C) 2013-2014 Mnemosyne LLC
*
* It may be used under the GNU GPL versions 2 or 3
* or any future license endorsed by Mnemosyne LLC.
*
* $Id$
*/
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h> /* getuid() */
#include <event2/util.h> /* evutil_ascii_strcasecmp () */
#ifndef _WIN32
#include <sys/types.h> /* types needed by quota.h */
#if defined(__FreeBSD__) || defined(__OpenBSD__)
#include <ufs/ufs/quota.h> /* quotactl() */
#elif defined (__NetBSD__)
#include <sys/param.h>
#ifndef statfs
#define statfs statvfs
#endif
#elif defined (__sun)
#include <sys/fs/ufs_quota.h> /* quotactl */
#else
#include <sys/quota.h> /* quotactl() */
#endif
#ifdef HAVE_GETMNTENT
#ifdef __sun
#include <fcntl.h>
#include <stdio.h>
#include <sys/mntent.h>
#include <sys/mnttab.h>
#define _PATH_MOUNTED MNTTAB
#else
#include <mntent.h>
#include <paths.h> /* _PATH_MOUNTED */
#endif
#else /* BSD derived systems */
#include <sys/param.h>
#include <sys/ucred.h>
#include <sys/mount.h>
#endif
#endif
#ifdef __APPLE__
#define HAVE_SYS_STATVFS_H
#define HAVE_STATVFS
#endif
#ifdef HAVE_SYS_STATVFS_H
#include <sys/statvfs.h>
#endif
#ifdef HAVE_XFS_XFS_H
#define HAVE_XQM
#include <xfs/xqm.h>
#endif
#include "transmission.h"
#include "utils.h"
#include "platform-quota.h"
/***
****
***/
#ifndef _WIN32
static const char *
getdev (const char * path)
{
#ifdef HAVE_GETMNTENT
FILE * fp;
#ifdef __sun
struct mnttab mnt;
fp = fopen(_PATH_MOUNTED, "r");
if (fp == NULL)
return NULL;
while (getmntent(fp, &mnt))
if (!tr_strcmp0 (path, mnt.mnt_mountp))
break;
fclose(fp);
return mnt.mnt_special;
#else
struct mntent * mnt;
fp = setmntent(_PATH_MOUNTED, "r");
if (fp == NULL)
return NULL;
while ((mnt = getmntent(fp)) != NULL)
if (!tr_strcmp0 (path, mnt->mnt_dir))
break;
endmntent(fp);
return mnt ? mnt->mnt_fsname : NULL;
#endif
#else /* BSD derived systems */
int i;
int n;
struct statfs * mnt;
n = getmntinfo(&mnt, MNT_WAIT);
if (!n)
return NULL;
for (i=0; i<n; i++)
if (!tr_strcmp0 (path, mnt[i].f_mntonname))
break;
return (i < n) ? mnt[i].f_mntfromname : NULL;
#endif
}
static const char *
getfstype (const char * device)
{
#ifdef HAVE_GETMNTENT
FILE * fp;
#ifdef __sun
struct mnttab mnt;
fp = fopen(_PATH_MOUNTED, "r");
if (fp == NULL)
return NULL;
while (getmntent(fp, &mnt))
if (!tr_strcmp0 (device, mnt.mnt_mountp))
break;
fclose(fp);
return mnt.mnt_fstype;
#else
struct mntent *mnt;
fp = setmntent (_PATH_MOUNTED, "r");
if (fp == NULL)
return NULL;
while ((mnt = getmntent (fp)) != NULL)
if (!tr_strcmp0 (device, mnt->mnt_fsname))
break;
endmntent(fp);
return mnt ? mnt->mnt_type : NULL;
#endif
#else /* BSD derived systems */
int i;
int n;
struct statfs *mnt;
n = getmntinfo(&mnt, MNT_WAIT);
if (!n)
return NULL;
for (i=0; i<n; i++)
if (!tr_strcmp0 (device, mnt[i].f_mntfromname))
break;
return (i < n) ? mnt[i].f_fstypename : NULL;
#endif
}
static const char *
getblkdev (const char * path)
{
char * c;
char * dir;
const char * device;
dir = tr_strdup(path);
for (;;)
{
device = getdev (dir);
if (device != NULL)
break;
c = strrchr (dir, '/');
if (c != NULL)
*c = '\0';
else
break;
}
tr_free (dir);
return device;
}
#if defined(__NetBSD__) && (__NetBSD_Version__ >= 600000000)
#include <quota.h>
static int64_t
getquota (const char * device)
{
struct quotahandle *qh;
struct quotakey qk;
struct quotaval qv;
int64_t limit;
int64_t freespace;
int64_t spaceused;
qh = quota_open(device);
if (qh == NULL) {
return -1;
}
qk.qk_idtype = QUOTA_IDTYPE_USER;
qk.qk_id = getuid();
qk.qk_objtype = QUOTA_OBJTYPE_BLOCKS;
if (quota_get(qh, &qk, &qv) == -1) {
quota_close(qh);
return -1;
}
if (qv.qv_softlimit > 0) {
limit = qv.qv_softlimit;
}
else if (qv.qv_hardlimit > 0) {
limit = qv.qv_hardlimit;
}
else {
quota_close(qh);
return -1;
}
spaceused = qv.qv_usage;
quota_close(qh);
freespace = limit - spaceused;
return (freespace < 0) ? 0 : freespace;
}
#else
static int64_t
getquota (const char * device)
{
struct dqblk dq;
int64_t limit;
int64_t freespace;
int64_t spaceused;
#if defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__APPLE__)
if (quotactl(device, QCMD(Q_GETQUOTA, USRQUOTA), getuid(), (caddr_t) &dq) == 0)
{
#elif defined(__sun)
struct quotctl op;
int fd = open(device, O_RDONLY);
if (fd < 0)
return -1;
op.op = Q_GETQUOTA;
op.uid = getuid();
op.addr = (caddr_t) &dq;
if (ioctl(fd, Q_QUOTACTL, &op) == 0)
{
close(fd);
#else
if (quotactl(QCMD(Q_GETQUOTA, USRQUOTA), device, getuid(), (caddr_t) &dq) == 0)
{
#endif
if (dq.dqb_bsoftlimit > 0)
{
/* Use soft limit first */
limit = dq.dqb_bsoftlimit;
}
else if (dq.dqb_bhardlimit > 0)
{
limit = dq.dqb_bhardlimit;
}
else
{
/* No quota enabled for this user */
return -1;
}
#if defined(__FreeBSD__) || defined(__OpenBSD__)
spaceused = (int64_t) dq.dqb_curblocks >> 1;
#elif defined(__APPLE__)
spaceused = (int64_t) dq.dqb_curbytes;
#elif defined(__UCLIBC__)
spaceused = (int64_t) btodb(dq.dqb_curblocks);
#elif defined(__sun) || (_LINUX_QUOTA_VERSION < 2)
spaceused = (int64_t) dq.dqb_curblocks >> 1;
#else
spaceused = btodb(dq.dqb_curspace);
#endif
freespace = limit - spaceused;
#ifdef __APPLE__
return (freespace < 0) ? 0 : freespace;
#else
return (freespace < 0) ? 0 : freespace * 1024;
#endif
}
#if defined(__sun)
close(fd);
#endif
/* something went wrong */
return -1;
}
#endif
#ifdef HAVE_XQM
static int64_t
getxfsquota (char * device)
{
int64_t limit;
int64_t freespace;
struct fs_disk_quota dq;
if (quotactl(QCMD(Q_XGETQUOTA, USRQUOTA), device, getuid(), (caddr_t) &dq) == 0)
{
if (dq.d_blk_softlimit > 0)
{
/* Use soft limit first */
limit = dq.d_blk_softlimit >> 1;
}
else if (dq.d_blk_hardlimit > 0)
{
limit = dq.d_blk_hardlimit >> 1;
}
else
{
/* No quota enabled for this user */
return -1;
}
freespace = limit - (dq.d_bcount >> 1);
return (freespace < 0) ? 0 : freespace * 1024;
}
/* something went wrong */
return -1;
}
#endif /* HAVE_XQM */
#endif /* _WIN32 */
static int64_t
tr_getQuotaFreeSpace (const struct tr_device_info * info)
{
int64_t ret = -1;
#ifndef _WIN32
if (info->fstype && !evutil_ascii_strcasecmp(info->fstype, "xfs"))
{
#ifdef HAVE_XQM
ret = getxfsquota (info->device);
#endif
}
else
{
ret = getquota (info->device);
}
#endif /* _WIN32 */
return ret;
}
static int64_t
tr_getDiskFreeSpace (const char * path)
{
#ifdef _WIN32
int64_t ret = -1;
wchar_t * wide_path;
wide_path = tr_win32_utf8_to_native (path, -1);
if (wide_path != NULL)
{
ULARGE_INTEGER freeBytesAvailable;
if (GetDiskFreeSpaceExW (wide_path, &freeBytesAvailable, NULL, NULL))
ret = freeBytesAvailable.QuadPart;
tr_free (wide_path);
}
return ret;
#elif defined(HAVE_STATVFS)
struct statvfs buf;
return statvfs(path, &buf) ? -1 : (int64_t)buf.f_bavail * (int64_t)buf.f_frsize;
#else
#warning FIXME: not implemented
return -1;
#endif
}
struct tr_device_info *
tr_device_info_create (const char * path)
{
struct tr_device_info * info;
info = tr_new0 (struct tr_device_info, 1);
info->path = tr_strdup (path);
#ifndef _WIN32
info->device = tr_strdup (getblkdev (path));
info->fstype = tr_strdup (getfstype (path));
#endif
return info;
}
void
tr_device_info_free (struct tr_device_info * info)
{
if (info != NULL)
{
tr_free (info->fstype);
tr_free (info->device);
tr_free (info->path);
tr_free (info);
}
}
int64_t
tr_device_info_get_free_space (const struct tr_device_info * info)
{
int64_t free_space;
if ((info == NULL) || (info->path == NULL))
{
errno = EINVAL;
free_space = -1;
}
else
{
free_space = tr_getQuotaFreeSpace (info);
if (free_space < 0)
free_space = tr_getDiskFreeSpace (info->path);
}
return free_space;
}
/***
****
***/
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