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Diffstat (limited to 'source3/lib/sysquotas_linux.c')
| -rw-r--r-- | source3/lib/sysquotas_linux.c | 220 |
1 files changed, 220 insertions, 0 deletions
diff --git a/source3/lib/sysquotas_linux.c b/source3/lib/sysquotas_linux.c new file mode 100644 index 0000000..4415f51 --- /dev/null +++ b/source3/lib/sysquotas_linux.c @@ -0,0 +1,220 @@ +/* + Unix SMB/CIFS implementation. + System QUOTA function wrappers for LINUX + Copyright (C) Stefan (metze) Metzmacher 2003 + + 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 3 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 "includes.h" + +#undef DBGC_CLASS +#define DBGC_CLASS DBGC_QUOTA + +#ifndef HAVE_SYS_QUOTAS +#ifdef HAVE_QUOTACTL_LINUX +#undef HAVE_QUOTACTL_LINUX +#endif +#endif + +#ifdef HAVE_QUOTACTL_LINUX + +#include <sys/quota.h> + +/**************************************************************************** + Linux quota get calls. +****************************************************************************/ +int sys_get_vfs_quota(const char *path, const char *bdev, + enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *dp) +{ + int ret = -1; + uint32_t qflags = 0; + struct dqblk D; + uint64_t bsize = (uint64_t)QUOTABLOCK_SIZE; + + if (!path || !bdev || !dp) { + smb_panic("sys_get_vfs_quota: called with NULL pointer"); + } + + ZERO_STRUCT(*dp); + dp->qtype = qtype; + + ZERO_STRUCT(D); + + switch (qtype) { + case SMB_USER_QUOTA_TYPE: + DEBUG(10, ("sys_get_vfs_quota: path[%s] bdev[%s] " + "SMB_USER_QUOTA_TYPE uid[%u]\n", + path, bdev, (unsigned)id.uid)); + + if ((ret = quotactl(QCMD(Q_GETQUOTA, USRQUOTA), bdev, + id.uid, (caddr_t)&D))) { + return ret; + } + + break; + case SMB_GROUP_QUOTA_TYPE: + DEBUG(10, ("sys_get_vfs_quota: path[%s] bdev[%s] " + "SMB_GROUP_QUOTA_TYPE gid[%u]\n", + path, bdev, (unsigned)id.gid)); + + if ((ret = quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), bdev, + id.gid, (caddr_t)&D))) { + return ret; + } + + break; + case SMB_USER_FS_QUOTA_TYPE: + DEBUG(10, ("sys_get_vfs_quota: path[%s] bdev[%s] " + "SMB_USER_FS_QUOTA_TYPE (uid[%u])\n", + path, bdev, (unsigned)geteuid())); + + if ((ret = quotactl(QCMD(Q_GETQUOTA, USRQUOTA), bdev, + geteuid(), (caddr_t)&D)) == 0) { + qflags |= QUOTAS_DENY_DISK; + } + + ret = 0; + + break; + case SMB_GROUP_FS_QUOTA_TYPE: + DEBUG(10, ("sys_get_vfs_quota: path[%s] bdev[%s] " + "SMB_GROUP_FS_QUOTA_TYPE (gid[%u])\n", + path, bdev, (unsigned)getegid())); + + if ((ret = quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), bdev, + getegid(), (caddr_t)&D)) == 0) { + qflags |= QUOTAS_DENY_DISK; + } + + ret = 0; + break; + default: + errno = ENOSYS; + return -1; + } + + dp->bsize = bsize; + dp->softlimit = (uint64_t)D.dqb_bsoftlimit; + dp->hardlimit = (uint64_t)D.dqb_bhardlimit; + dp->ihardlimit = (uint64_t)D.dqb_ihardlimit; + dp->isoftlimit = (uint64_t)D.dqb_isoftlimit; + dp->curinodes = (uint64_t)D.dqb_curinodes; + dp->curblocks = (uint64_t)D.dqb_curspace/bsize; + + + dp->qflags = qflags; + + return ret; +} + +/**************************************************************************** + Linux quota set calls. +****************************************************************************/ +int sys_set_vfs_quota(const char *path, const char *bdev, + enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *dp) +{ + int ret = -1; + struct dqblk D; + uint64_t bsize = (uint64_t)QUOTABLOCK_SIZE; + bool cur_enf, new_enf; + + if (!path || !bdev || !dp) { + smb_panic("sys_set_vfs_quota: called with NULL pointer"); + } + + ZERO_STRUCT(D); + + if (bsize == dp->bsize) { + D.dqb_bsoftlimit = dp->softlimit; + D.dqb_bhardlimit = dp->hardlimit; + } else { + D.dqb_bsoftlimit = (dp->softlimit*dp->bsize)/bsize; + D.dqb_bhardlimit = (dp->hardlimit*dp->bsize)/bsize; + } + D.dqb_ihardlimit = dp->ihardlimit; + D.dqb_isoftlimit = dp->isoftlimit; + D.dqb_valid = QIF_LIMITS; + + switch (qtype) { + case SMB_USER_QUOTA_TYPE: + DEBUG(10, ("sys_set_vfs_quota: path[%s] bdev[%s] " + "SMB_USER_QUOTA_TYPE uid[%u]\n", + path, bdev, (unsigned)id.uid)); + + ret = quotactl(QCMD(Q_SETQUOTA,USRQUOTA), bdev, id.uid, (caddr_t)&D); + break; + case SMB_GROUP_QUOTA_TYPE: + DEBUG(10, ("sys_set_vfs_quota: path[%s] bdev[%s] " + "SMB_GROUP_QUOTA_TYPE gid[%u]\n", + path, bdev, (unsigned)id.gid)); + + ret = quotactl(QCMD(Q_SETQUOTA,GRPQUOTA), bdev, id.gid, (caddr_t)&D); + break; + case SMB_USER_FS_QUOTA_TYPE: + DEBUG(10, ("sys_set_vfs_quota: path[%s] bdev[%s] " + "SMB_USER_FS_QUOTA_TYPE (uid[%u])\n", + path, bdev, (unsigned)geteuid())); + + ret = quotactl(QCMD(Q_GETQUOTA, USRQUOTA), bdev, + geteuid(), (caddr_t)&D); + cur_enf = (ret == 0); + new_enf = ((dp->qflags & QUOTAS_DENY_DISK) != 0); + /* We're not changing quota enforcement, so return + * success + * IFF the wanted state is identical to the current + * state */ + if (cur_enf == new_enf) { + ret = 0; + } else { + errno = EPERM; + ret = -1; + } + + break; + case SMB_GROUP_FS_QUOTA_TYPE: + DEBUG(10, ("sys_set_vfs_quota: path[%s] bdev[%s] " + "SMB_GROUP_FS_QUOTA_TYPE (gid[%u])\n", + path, bdev, (unsigned)getegid())); + + ret = quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), bdev, + getegid(), (caddr_t)&D); + cur_enf = (ret == 0); + new_enf = ((dp->qflags & QUOTAS_DENY_DISK) != 0); + /* We're not changing quota enforcement, so return + * success + * IFF the wanted state is identical to the current + * state */ + if (cur_enf == new_enf) { + ret = 0; + } else { + errno = EPERM; + ret = -1; + } + + break; + default: + errno = ENOSYS; + return -1; + } + + return ret; +} + +#else /* HAVE_QUOTACTL_LINUX */ + void dummy_sysquotas_linux(void); + + void dummy_sysquotas_linux(void){} +#endif /* HAVE_QUOTACTL_LINUX */ |