mirror of
https://github.com/transmission/transmission
synced 2024-12-26 09:37:56 +00:00
52a9d774e4
This should not affect non-Win32 platforms in any way. As for Win32 (both MinGW and MSVC), this should hopefully allow for unpatched compilation. Correct functioning is not yet guaranteed though.
451 lines
8.4 KiB
C
451 lines
8.4 KiB
C
/*
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* This file Copyright (C) 2013-2014 Mnemosyne LLC
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*
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* It may be used under the GNU GPL versions 2 or 3
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* or any future license endorsed by Mnemosyne LLC.
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*
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* $Id$
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*/
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#include <errno.h>
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#include <stdlib.h>
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#include <string.h>
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#include <event2/util.h> /* evutil_ascii_strcasecmp () */
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#ifndef _WIN32
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#include <unistd.h> /* getuid() */
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#include <sys/types.h> /* types needed by quota.h */
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#if defined(__FreeBSD__) || defined(__OpenBSD__)
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#include <ufs/ufs/quota.h> /* quotactl() */
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#elif defined (__NetBSD__)
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#include <sys/param.h>
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#ifndef statfs
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#define statfs statvfs
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#endif
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#elif defined (__sun)
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#include <sys/fs/ufs_quota.h> /* quotactl */
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#else
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#include <sys/quota.h> /* quotactl() */
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#endif
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#ifdef HAVE_GETMNTENT
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#ifdef __sun
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#include <fcntl.h>
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#include <stdio.h>
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#include <sys/mntent.h>
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#include <sys/mnttab.h>
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#define _PATH_MOUNTED MNTTAB
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#else
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#include <mntent.h>
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#include <paths.h> /* _PATH_MOUNTED */
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#endif
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#else /* BSD derived systems */
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#include <sys/param.h>
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#include <sys/ucred.h>
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#include <sys/mount.h>
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#endif
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#endif
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#ifdef __APPLE__
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#ifndef HAVE_SYS_STATVFS_H
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#define HAVE_SYS_STATVFS_H
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#endif
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#ifndef HAVE_STATVFS
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#define HAVE_STATVFS
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#endif
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#endif
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#ifdef HAVE_SYS_STATVFS_H
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#include <sys/statvfs.h>
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#endif
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#ifdef HAVE_XFS_XFS_H
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#define HAVE_XQM
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#include <xfs/xqm.h>
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#endif
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#include "transmission.h"
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#include "utils.h"
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#include "platform-quota.h"
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/***
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****
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***/
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#ifndef _WIN32
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static const char *
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getdev (const char * path)
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{
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#ifdef HAVE_GETMNTENT
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FILE * fp;
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#ifdef __sun
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struct mnttab mnt;
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fp = fopen(_PATH_MOUNTED, "r");
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if (fp == NULL)
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return NULL;
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while (getmntent(fp, &mnt))
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if (!tr_strcmp0 (path, mnt.mnt_mountp))
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break;
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fclose(fp);
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return mnt.mnt_special;
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#else
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struct mntent * mnt;
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fp = setmntent(_PATH_MOUNTED, "r");
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if (fp == NULL)
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return NULL;
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while ((mnt = getmntent(fp)) != NULL)
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if (!tr_strcmp0 (path, mnt->mnt_dir))
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break;
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endmntent(fp);
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return mnt ? mnt->mnt_fsname : NULL;
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#endif
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#else /* BSD derived systems */
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int i;
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int n;
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struct statfs * mnt;
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n = getmntinfo(&mnt, MNT_WAIT);
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if (!n)
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return NULL;
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for (i=0; i<n; i++)
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if (!tr_strcmp0 (path, mnt[i].f_mntonname))
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break;
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return (i < n) ? mnt[i].f_mntfromname : NULL;
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#endif
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}
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static const char *
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getfstype (const char * device)
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{
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#ifdef HAVE_GETMNTENT
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FILE * fp;
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#ifdef __sun
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struct mnttab mnt;
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fp = fopen(_PATH_MOUNTED, "r");
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if (fp == NULL)
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return NULL;
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while (getmntent(fp, &mnt))
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if (!tr_strcmp0 (device, mnt.mnt_mountp))
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break;
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fclose(fp);
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return mnt.mnt_fstype;
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#else
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struct mntent *mnt;
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fp = setmntent (_PATH_MOUNTED, "r");
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if (fp == NULL)
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return NULL;
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while ((mnt = getmntent (fp)) != NULL)
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if (!tr_strcmp0 (device, mnt->mnt_fsname))
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break;
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endmntent(fp);
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return mnt ? mnt->mnt_type : NULL;
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#endif
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#else /* BSD derived systems */
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int i;
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int n;
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struct statfs *mnt;
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n = getmntinfo(&mnt, MNT_WAIT);
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if (!n)
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return NULL;
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for (i=0; i<n; i++)
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if (!tr_strcmp0 (device, mnt[i].f_mntfromname))
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break;
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return (i < n) ? mnt[i].f_fstypename : NULL;
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#endif
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}
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static const char *
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getblkdev (const char * path)
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{
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char * c;
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char * dir;
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const char * device;
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dir = tr_strdup(path);
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for (;;)
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{
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device = getdev (dir);
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if (device != NULL)
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break;
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c = strrchr (dir, '/');
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if (c != NULL)
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*c = '\0';
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else
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break;
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}
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tr_free (dir);
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return device;
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}
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#if defined(__NetBSD__) && (__NetBSD_Version__ >= 600000000)
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#include <quota.h>
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static int64_t
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getquota (const char * device)
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{
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struct quotahandle *qh;
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struct quotakey qk;
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struct quotaval qv;
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int64_t limit;
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int64_t freespace;
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int64_t spaceused;
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qh = quota_open(device);
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if (qh == NULL) {
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return -1;
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}
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qk.qk_idtype = QUOTA_IDTYPE_USER;
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qk.qk_id = getuid();
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qk.qk_objtype = QUOTA_OBJTYPE_BLOCKS;
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if (quota_get(qh, &qk, &qv) == -1) {
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quota_close(qh);
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return -1;
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}
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if (qv.qv_softlimit > 0) {
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limit = qv.qv_softlimit;
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}
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else if (qv.qv_hardlimit > 0) {
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limit = qv.qv_hardlimit;
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}
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else {
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quota_close(qh);
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return -1;
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}
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spaceused = qv.qv_usage;
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quota_close(qh);
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freespace = limit - spaceused;
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return (freespace < 0) ? 0 : freespace;
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}
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#else
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static int64_t
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getquota (const char * device)
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{
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struct dqblk dq;
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int64_t limit;
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int64_t freespace;
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int64_t spaceused;
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#if defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__APPLE__)
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if (quotactl(device, QCMD(Q_GETQUOTA, USRQUOTA), getuid(), (caddr_t) &dq) == 0)
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{
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#elif defined(__sun)
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struct quotctl op;
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int fd = open(device, O_RDONLY);
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if (fd < 0)
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return -1;
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op.op = Q_GETQUOTA;
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op.uid = getuid();
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op.addr = (caddr_t) &dq;
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if (ioctl(fd, Q_QUOTACTL, &op) == 0)
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{
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close(fd);
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#else
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if (quotactl(QCMD(Q_GETQUOTA, USRQUOTA), device, getuid(), (caddr_t) &dq) == 0)
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{
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#endif
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if (dq.dqb_bsoftlimit > 0)
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{
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/* Use soft limit first */
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limit = dq.dqb_bsoftlimit;
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}
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else if (dq.dqb_bhardlimit > 0)
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{
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limit = dq.dqb_bhardlimit;
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}
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else
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{
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/* No quota enabled for this user */
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return -1;
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}
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#if defined(__FreeBSD__) || defined(__OpenBSD__)
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spaceused = (int64_t) dq.dqb_curblocks >> 1;
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#elif defined(__APPLE__)
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spaceused = (int64_t) dq.dqb_curbytes;
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#elif defined(__UCLIBC__)
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spaceused = (int64_t) btodb(dq.dqb_curblocks);
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#elif defined(__sun) || (defined(_LINUX_QUOTA_VERSION) && _LINUX_QUOTA_VERSION < 2)
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spaceused = (int64_t) dq.dqb_curblocks >> 1;
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#else
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spaceused = btodb(dq.dqb_curspace);
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#endif
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freespace = limit - spaceused;
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#ifdef __APPLE__
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return (freespace < 0) ? 0 : freespace;
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#else
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return (freespace < 0) ? 0 : freespace * 1024;
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#endif
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}
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#if defined(__sun)
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close(fd);
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#endif
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/* something went wrong */
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return -1;
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}
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#endif
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#ifdef HAVE_XQM
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static int64_t
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getxfsquota (char * device)
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{
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int64_t limit;
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int64_t freespace;
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struct fs_disk_quota dq;
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if (quotactl(QCMD(Q_XGETQUOTA, USRQUOTA), device, getuid(), (caddr_t) &dq) == 0)
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{
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if (dq.d_blk_softlimit > 0)
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{
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/* Use soft limit first */
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limit = dq.d_blk_softlimit >> 1;
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}
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else if (dq.d_blk_hardlimit > 0)
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{
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limit = dq.d_blk_hardlimit >> 1;
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}
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else
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{
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/* No quota enabled for this user */
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return -1;
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}
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freespace = limit - (dq.d_bcount >> 1);
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return (freespace < 0) ? 0 : freespace * 1024;
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}
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/* something went wrong */
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return -1;
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}
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#endif /* HAVE_XQM */
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#endif /* _WIN32 */
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static int64_t
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tr_getQuotaFreeSpace (const struct tr_device_info * info)
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{
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int64_t ret = -1;
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#ifndef _WIN32
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if (info->fstype && !evutil_ascii_strcasecmp(info->fstype, "xfs"))
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{
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#ifdef HAVE_XQM
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ret = getxfsquota (info->device);
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#endif
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}
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else
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{
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ret = getquota (info->device);
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}
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#endif /* _WIN32 */
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return ret;
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}
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static int64_t
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tr_getDiskFreeSpace (const char * path)
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{
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#ifdef _WIN32
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int64_t ret = -1;
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wchar_t * wide_path;
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wide_path = tr_win32_utf8_to_native (path, -1);
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if (wide_path != NULL)
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{
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ULARGE_INTEGER freeBytesAvailable;
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if (GetDiskFreeSpaceExW (wide_path, &freeBytesAvailable, NULL, NULL))
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ret = freeBytesAvailable.QuadPart;
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tr_free (wide_path);
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}
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return ret;
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#elif defined(HAVE_STATVFS)
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struct statvfs buf;
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return statvfs(path, &buf) ? -1 : (int64_t)buf.f_bavail * (int64_t)buf.f_frsize;
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#else
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#warning FIXME: not implemented
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return -1;
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#endif
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}
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struct tr_device_info *
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tr_device_info_create (const char * path)
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{
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struct tr_device_info * info;
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info = tr_new0 (struct tr_device_info, 1);
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info->path = tr_strdup (path);
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#ifndef _WIN32
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info->device = tr_strdup (getblkdev (path));
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info->fstype = tr_strdup (getfstype (path));
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#endif
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return info;
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}
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void
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tr_device_info_free (struct tr_device_info * info)
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{
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if (info != NULL)
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{
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tr_free (info->fstype);
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tr_free (info->device);
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tr_free (info->path);
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tr_free (info);
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}
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}
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int64_t
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tr_device_info_get_free_space (const struct tr_device_info * info)
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{
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int64_t free_space;
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if ((info == NULL) || (info->path == NULL))
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{
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errno = EINVAL;
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free_space = -1;
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}
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else
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{
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free_space = tr_getQuotaFreeSpace (info);
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if (free_space < 0)
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free_space = tr_getDiskFreeSpace (info->path);
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}
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return free_space;
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}
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/***
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****
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***/
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