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head/sys/fs/tmpfs/tmpfs_vfsops.c
| Show First 20 Lines • Show All 135 Lines • ▼ Show 20 Lines | |||||
| static int | static int | ||||
| tmpfs_mount(struct mount *mp) | tmpfs_mount(struct mount *mp) | ||||
| { | { | ||||
| const size_t nodes_per_page = howmany(PAGE_SIZE, | const size_t nodes_per_page = howmany(PAGE_SIZE, | ||||
| sizeof(struct tmpfs_dirent) + sizeof(struct tmpfs_node)); | sizeof(struct tmpfs_dirent) + sizeof(struct tmpfs_node)); | ||||
| struct tmpfs_mount *tmp; | struct tmpfs_mount *tmp; | ||||
| struct tmpfs_node *root; | struct tmpfs_node *root; | ||||
| struct thread *td = curthread; | |||||
| int error; | int error; | ||||
| bool nonc; | bool nonc; | ||||
| /* Size counters. */ | /* Size counters. */ | ||||
| u_quad_t pages; | u_quad_t pages; | ||||
| off_t nodes_max, size_max, maxfilesize; | off_t nodes_max, size_max, maxfilesize; | ||||
| /* Root node attributes. */ | /* Root node attributes. */ | ||||
| uid_t root_uid; | uid_t root_uid; | ||||
| gid_t root_gid; | gid_t root_gid; | ||||
| mode_t root_mode; | mode_t root_mode; | ||||
| struct vattr va; | struct vattr va; | ||||
| if (!prison_allow(td->td_ucred, PR_ALLOW_MOUNT_TMPFS)) | |||||
| return (EPERM); | |||||
| if (vfs_filteropt(mp->mnt_optnew, tmpfs_opts)) | if (vfs_filteropt(mp->mnt_optnew, tmpfs_opts)) | ||||
| return (EINVAL); | return (EINVAL); | ||||
| if (mp->mnt_flag & MNT_UPDATE) { | if (mp->mnt_flag & MNT_UPDATE) { | ||||
| /* Only support update mounts for certain options. */ | /* Only support update mounts for certain options. */ | ||||
| if (vfs_filteropt(mp->mnt_optnew, tmpfs_updateopts) != 0) | if (vfs_filteropt(mp->mnt_optnew, tmpfs_updateopts) != 0) | ||||
| return (EOPNOTSUPP); | return (EOPNOTSUPP); | ||||
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