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head/sys/kern/vfs_syscalls.c
| Show First 20 Lines • Show All 242 Lines • ▼ Show 20 Lines | statfs_scale_blocks(struct statfs *sf, long max_size) | ||||
| sf->f_blocks >>= shift; | sf->f_blocks >>= shift; | ||||
| sf->f_bfree >>= shift; | sf->f_bfree >>= shift; | ||||
| sf->f_bavail >>= shift; | sf->f_bavail >>= shift; | ||||
| } | } | ||||
| static int | static int | ||||
| kern_do_statfs(struct thread *td, struct mount *mp, struct statfs *buf) | kern_do_statfs(struct thread *td, struct mount *mp, struct statfs *buf) | ||||
| { | { | ||||
| struct statfs *sp; | |||||
| int error; | int error; | ||||
| if (mp == NULL) | if (mp == NULL) | ||||
| return (EBADF); | return (EBADF); | ||||
| error = vfs_busy(mp, 0); | error = vfs_busy(mp, 0); | ||||
| vfs_rel(mp); | vfs_rel(mp); | ||||
| if (error != 0) | if (error != 0) | ||||
| return (error); | return (error); | ||||
| #ifdef MAC | #ifdef MAC | ||||
| error = mac_mount_check_stat(td->td_ucred, mp); | error = mac_mount_check_stat(td->td_ucred, mp); | ||||
| if (error != 0) | if (error != 0) | ||||
| goto out; | goto out; | ||||
| #endif | #endif | ||||
| /* | error = VFS_STATFS(mp, buf); | ||||
| * Set these in case the underlying filesystem fails to do so. | |||||
| */ | |||||
| sp = &mp->mnt_stat; | |||||
| sp->f_version = STATFS_VERSION; | |||||
| sp->f_namemax = NAME_MAX; | |||||
| sp->f_flags = mp->mnt_flag & MNT_VISFLAGMASK; | |||||
| error = VFS_STATFS(mp, sp); | |||||
| if (error != 0) | if (error != 0) | ||||
| goto out; | goto out; | ||||
| *buf = *sp; | |||||
| if (priv_check(td, PRIV_VFS_GENERATION)) { | if (priv_check(td, PRIV_VFS_GENERATION)) { | ||||
| buf->f_fsid.val[0] = buf->f_fsid.val[1] = 0; | buf->f_fsid.val[0] = buf->f_fsid.val[1] = 0; | ||||
| prison_enforce_statfs(td->td_ucred, mp, buf); | prison_enforce_statfs(td->td_ucred, mp, buf); | ||||
| } | } | ||||
| out: | out: | ||||
| vfs_unbusy(mp); | vfs_unbusy(mp); | ||||
| return (error); | return (error); | ||||
| } | } | ||||
| ▲ Show 20 Lines • Show All 187 Lines • ▼ Show 20 Lines | if (mode == MNT_WAIT) { | ||||
| if (vfs_busy(mp, MBF_NOWAIT | MBF_MNTLSTLOCK) != 0) { | if (vfs_busy(mp, MBF_NOWAIT | MBF_MNTLSTLOCK) != 0) { | ||||
| nmp = TAILQ_NEXT(mp, mnt_list); | nmp = TAILQ_NEXT(mp, mnt_list); | ||||
| continue; | continue; | ||||
| } | } | ||||
| } | } | ||||
| if (sfsp != NULL && count < maxcount) { | if (sfsp != NULL && count < maxcount) { | ||||
| sp = &mp->mnt_stat; | sp = &mp->mnt_stat; | ||||
| /* | /* | ||||
| * Set these in case the underlying filesystem | |||||
| * fails to do so. | |||||
| */ | |||||
| sp->f_version = STATFS_VERSION; | |||||
| sp->f_namemax = NAME_MAX; | |||||
| sp->f_flags = mp->mnt_flag & MNT_VISFLAGMASK; | |||||
| /* | |||||
| * If MNT_NOWAIT is specified, do not refresh | * If MNT_NOWAIT is specified, do not refresh | ||||
| * the fsstat cache. | * the fsstat cache. | ||||
| */ | */ | ||||
| if (mode != MNT_NOWAIT) { | if (mode != MNT_NOWAIT) { | ||||
| error = VFS_STATFS(mp, sp); | error = VFS_STATFS(mp, sp); | ||||
| if (error != 0) { | if (error != 0) { | ||||
| mtx_lock(&mountlist_mtx); | mtx_lock(&mountlist_mtx); | ||||
| nmp = TAILQ_NEXT(mp, mnt_list); | nmp = TAILQ_NEXT(mp, mnt_list); | ||||
| ▲ Show 20 Lines • Show All 4,046 Lines • ▼ Show 20 Lines | if (error == 0) | ||||
| error = copyout(sfp, uap->buf, sizeof(*sfp)); | error = copyout(sfp, uap->buf, sizeof(*sfp)); | ||||
| free(sfp, M_STATFS); | free(sfp, M_STATFS); | ||||
| return (error); | return (error); | ||||
| } | } | ||||
| int | int | ||||
| kern_fhstatfs(struct thread *td, fhandle_t fh, struct statfs *buf) | kern_fhstatfs(struct thread *td, fhandle_t fh, struct statfs *buf) | ||||
| { | { | ||||
| struct statfs *sp; | |||||
| struct mount *mp; | struct mount *mp; | ||||
| struct vnode *vp; | struct vnode *vp; | ||||
| int error; | int error; | ||||
| error = priv_check(td, PRIV_VFS_FHSTATFS); | error = priv_check(td, PRIV_VFS_FHSTATFS); | ||||
| if (error != 0) | if (error != 0) | ||||
| return (error); | return (error); | ||||
| if ((mp = vfs_busyfs(&fh.fh_fsid)) == NULL) | if ((mp = vfs_busyfs(&fh.fh_fsid)) == NULL) | ||||
| return (ESTALE); | return (ESTALE); | ||||
| error = VFS_FHTOVP(mp, &fh.fh_fid, LK_EXCLUSIVE, &vp); | error = VFS_FHTOVP(mp, &fh.fh_fid, LK_EXCLUSIVE, &vp); | ||||
| if (error != 0) { | if (error != 0) { | ||||
| vfs_unbusy(mp); | vfs_unbusy(mp); | ||||
| return (error); | return (error); | ||||
| } | } | ||||
| vput(vp); | vput(vp); | ||||
| error = prison_canseemount(td->td_ucred, mp); | error = prison_canseemount(td->td_ucred, mp); | ||||
| if (error != 0) | if (error != 0) | ||||
| goto out; | goto out; | ||||
| #ifdef MAC | #ifdef MAC | ||||
| error = mac_mount_check_stat(td->td_ucred, mp); | error = mac_mount_check_stat(td->td_ucred, mp); | ||||
| if (error != 0) | if (error != 0) | ||||
| goto out; | goto out; | ||||
| #endif | #endif | ||||
| /* | error = VFS_STATFS(mp, buf); | ||||
| * Set these in case the underlying filesystem fails to do so. | |||||
| */ | |||||
| sp = &mp->mnt_stat; | |||||
| sp->f_version = STATFS_VERSION; | |||||
| sp->f_namemax = NAME_MAX; | |||||
| sp->f_flags = mp->mnt_flag & MNT_VISFLAGMASK; | |||||
| error = VFS_STATFS(mp, sp); | |||||
| if (error == 0) | |||||
| *buf = *sp; | |||||
| out: | out: | ||||
| vfs_unbusy(mp); | vfs_unbusy(mp); | ||||
| return (error); | return (error); | ||||
| } | } | ||||
| int | int | ||||
| kern_posix_fallocate(struct thread *td, int fd, off_t offset, off_t len) | kern_posix_fallocate(struct thread *td, int fd, off_t offset, off_t len) | ||||
| { | { | ||||
| ▲ Show 20 Lines • Show All 346 Lines • Show Last 20 Lines | |||||