958b25be50
- Revise VFS-FS protocol and update VFS/MFS/ISOFS accordingly.
- Clean up MFS by removing old, dead code (backwards compatibility is broken by
the new VFS-FS protocol, anyway) and rewrite other parts. Also, make sure all
functions have proper banners and prototypes.
- VFS should always provide a (syntactically) valid path to the FS; no need for
the FS to do sanity checks when leaving/entering mount points.
- Fix several bugs in MFS:
- Several path lookup bugs in MFS.
- A link can be too big for the path buffer.
- A mountpoint can become inaccessible when the creation of a new inode
fails, because the inode already exists and is a mountpoint.
- Introduce support for supplemental groups.
- Add test 46 to test supplemental group functionality (and removed obsolete
suppl. tests from test 2).
- Clean up VFS (not everything is done yet).
- ISOFS now opens device read-only. This makes the -r flag in the mount command
unnecessary (but will still report to be mounted read-write).
- Introduce PipeFS. PipeFS is a new FS that handles all anonymous and
named pipes. However, named pipes still reside on the (M)FS, as they are part
of the file system on disk. To make this work VFS now has a concept of
'mapped' inodes, which causes read, write, truncate and stat requests to be
redirected to the mapped FS, and all other requests to the original FS.
277 lines
12 KiB
C
277 lines
12 KiB
C
/* Function prototypes. */
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#include "timers.h"
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#include "request.h"
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/* Structs used in prototypes must be declared as such first. */
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struct filp;
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struct fproc;
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struct vmnt;
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struct vnode;
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/* device.c */
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_PROTOTYPE( int dev_open, (Dev_t dev, int proc, int flags) );
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_PROTOTYPE( int dev_reopen, (Dev_t dev, int filp_no, int flags) );
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_PROTOTYPE( int dev_close, (Dev_t dev, int filp_no) );
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_PROTOTYPE( int dev_io, (int op, Dev_t dev, int proc, void *buf,
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u64_t pos, int bytes, int flags, int suspend_reopen) );
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_PROTOTYPE( int gen_opcl, (int op, Dev_t dev, int proc, int flags) );
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_PROTOTYPE( int gen_io, (int task_nr, message *mess_ptr) );
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_PROTOTYPE( int asyn_io, (int task_nr, message *mess_ptr) );
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_PROTOTYPE( int no_dev, (int op, Dev_t dev, int proc, int flags) );
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_PROTOTYPE( int no_dev_io, (int, message *) );
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_PROTOTYPE( int tty_opcl, (int op, Dev_t dev, int proc, int flags) );
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_PROTOTYPE( int ctty_opcl, (int op, Dev_t dev, int proc, int flags) );
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_PROTOTYPE( int clone_opcl, (int op, Dev_t dev, int proc, int flags) );
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_PROTOTYPE( int ctty_io, (int task_nr, message *mess_ptr) );
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_PROTOTYPE( int do_ioctl, (void) );
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_PROTOTYPE( void pm_setsid, (int proc_e) );
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_PROTOTYPE( void dev_status, (message *) );
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_PROTOTYPE( void dev_up, (int major) );
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_PROTOTYPE( endpoint_t suspended_ep, (endpoint_t driver,
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cp_grant_id_t g) );
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_PROTOTYPE( void reopen_reply, (void) );
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/* dmap.c */
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_PROTOTYPE( int do_devctl, (void) );
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_PROTOTYPE( int fs_devctl, (int req, int dev, int proc_nr_e, int style,
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int force) );
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_PROTOTYPE( int do_mapdriver, (void) );
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_PROTOTYPE( void build_dmap, (void) );
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_PROTOTYPE( int map_driver, (int major, int proc_nr, int dev_style,
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int force) );
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_PROTOTYPE( int dmap_driver_match, (endpoint_t proc, int major) );
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_PROTOTYPE( void dmap_unmap_by_endpt, (int proc_nr) );
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_PROTOTYPE( void dmap_endpt_up, (int proc_nr) );
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/* exec.c */
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_PROTOTYPE( int pm_exec, (int proc_e, char *path, vir_bytes path_len,
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char *frame, vir_bytes frame_len) );
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/* filedes.c */
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_PROTOTYPE( struct filp *find_filp, (struct vnode *vp, mode_t bits) );
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_PROTOTYPE( int get_fd, (int start, mode_t bits, int *k,
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struct filp **fpt) );
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_PROTOTYPE( struct filp *get_filp, (int fild) );
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_PROTOTYPE( struct filp *get_filp2, (struct fproc *rfp, int fild) );
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_PROTOTYPE( int invalidate, (struct filp *) );
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/* fscall.c */
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_PROTOTYPE( void nested_fs_call, (message *m) );
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/* link.c */
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_PROTOTYPE( int do_link, (void) );
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_PROTOTYPE( int do_unlink, (void) );
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_PROTOTYPE( int do_rename, (void) );
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_PROTOTYPE( int do_truncate, (void) );
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_PROTOTYPE( int do_ftruncate, (void) );
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_PROTOTYPE( int truncate_vnode, (struct vnode *vp, off_t newsize) );
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/* lock.c */
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_PROTOTYPE( int lock_op, (struct filp *f, int req) );
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_PROTOTYPE( void lock_revive, (void) );
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/* main.c */
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_PROTOTYPE( int main, (void) );
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_PROTOTYPE( void reply, (int whom, int result) );
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/* misc.c */
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_PROTOTYPE( int do_dup, (void) );
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_PROTOTYPE( void pm_exit, (int proc) );
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_PROTOTYPE( int do_fcntl, (void) );
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_PROTOTYPE( void pm_fork, (int pproc, int cproc, int cpid) );
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_PROTOTYPE( void pm_setgid, (int proc_e, int egid, int rgid) );
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_PROTOTYPE( void pm_setuid, (int proc_e, int euid, int ruid) );
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_PROTOTYPE( void pm_setgroups, (int proc_e, int ngroups, gid_t *addr) );
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_PROTOTYPE( int do_sync, (void) );
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_PROTOTYPE( int do_fsync, (void) );
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_PROTOTYPE( void pm_reboot, (void) );
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_PROTOTYPE( int do_svrctl, (void) );
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_PROTOTYPE( int do_getsysinfo, (void) );
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_PROTOTYPE( int pm_dumpcore, (int proc_e, struct mem_map *seg_ptr) );
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/* mmap.c */
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_PROTOTYPE( int do_vm_mmap, (void) );
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/* mount.c */
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_PROTOTYPE( int do_fslogin, (void) );
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_PROTOTYPE( int do_mount, (void) );
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_PROTOTYPE( int do_umount, (void) );
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_PROTOTYPE( int unmount, (Dev_t dev) );
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/* open.c */
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_PROTOTYPE( int do_close, (void) );
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_PROTOTYPE( int close_fd, (struct fproc *rfp, int fd_nr) );
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_PROTOTYPE( void close_filp, (struct filp *fp) );
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_PROTOTYPE( void close_reply, (void) );
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_PROTOTYPE( int do_creat, (void) );
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_PROTOTYPE( int do_lseek, (void) );
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_PROTOTYPE( int do_llseek, (void) );
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_PROTOTYPE( int do_mknod, (void) );
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_PROTOTYPE( int do_mkdir, (void) );
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_PROTOTYPE( int do_open, (void) );
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_PROTOTYPE( int do_slink, (void) );
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_PROTOTYPE( int do_vm_open, (void) );
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_PROTOTYPE( int do_vm_close, (void) );
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/* path.c */
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_PROTOTYPE( struct vnode *advance, (struct vnode *dirp, int flags) );
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_PROTOTYPE( struct vnode *eat_path, (int flags) );
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_PROTOTYPE( struct vnode *last_dir, (void) );
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/* pipe.c */
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_PROTOTYPE( int do_pipe, (void) );
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_PROTOTYPE( int map_vnode, (struct vnode *vp) );
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_PROTOTYPE( void unpause, (int proc_nr_e) );
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_PROTOTYPE( int pipe_check, (struct vnode *vp, int rw_flag,
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int oflags, int bytes, u64_t position, int notouch) );
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_PROTOTYPE( void release, (struct vnode *vp, int call_nr, int count) );
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_PROTOTYPE( void revive, (int proc_nr, int bytes) );
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_PROTOTYPE( void suspend, (int task) );
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_PROTOTYPE( void pipe_suspend, (int rw_flag, int fd_nr, char *buf,
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size_t size) );
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_PROTOTYPE( int select_request_pipe, (struct filp *f, int *ops, int bl) );
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_PROTOTYPE( int select_match_pipe, (struct filp *f) );
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_PROTOTYPE( void unsuspend_by_endpt, (endpoint_t) );
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_PROTOTYPE( void select_reply1, (void) );
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_PROTOTYPE( void select_reply2, (void) );
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_PROTOTYPE( void wait_for, (endpoint_t) );
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#if DO_SANITYCHECKS
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_PROTOTYPE( int check_pipe, (void) );
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#endif
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/* protect.c */
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_PROTOTYPE( int do_access, (void) );
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_PROTOTYPE( int do_chmod, (void) );
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_PROTOTYPE( int do_chown, (void) );
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_PROTOTYPE( int do_umask, (void) );
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_PROTOTYPE( int forbidden, (struct vnode *vp, mode_t access_desired) );
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_PROTOTYPE( int read_only, (struct vnode *vp) );
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/* read.c */
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_PROTOTYPE( int do_read, (void) );
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_PROTOTYPE( int do_getdents, (void) );
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_PROTOTYPE( int read_write, (int rw_flag) );
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_PROTOTYPE( int rw_pipe, (int rw_flag, endpoint_t usr,
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int fd_nr, struct filp *f, char *buf, size_t req_size) );
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/* request.c */
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_PROTOTYPE( int req_breadwrite, (endpoint_t fs_e, endpoint_t user_e,
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Dev_t dev, u64_t pos, unsigned int num_of_bytes,
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char *user_addr, int rw_flag,
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u64_t *new_posp, unsigned int *cum_iop) );
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_PROTOTYPE( int req_chmod, (int fs_e, ino_t inode_nr, _mnx_Mode_t rmode,
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mode_t *new_modep) );
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_PROTOTYPE( int req_chown, (endpoint_t fs_e, ino_t inode_nr,
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_mnx_Uid_t newuid, _mnx_Gid_t newgid, mode_t *new_modep) );
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_PROTOTYPE( int req_create, (int fs_e, ino_t inode_nr, int omode,
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int uid, int gid, char *path, node_details_t *res) );
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_PROTOTYPE( int req_flush, (endpoint_t fs_e, Dev_t dev) );
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_PROTOTYPE( int req_fstatfs, (int fs_e, int who_e, char *buf) );
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_PROTOTYPE( int req_ftrunc, (endpoint_t fs_e, ino_t inode_nr,
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off_t start, off_t end) );
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_PROTOTYPE( int req_getdents, (endpoint_t fs_e, ino_t inode_nr, u64_t pos,
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char *buf, size_t size, u64_t *new_pos) );
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_PROTOTYPE( int req_inhibread, (endpoint_t fs_e, ino_t inode_nr) );
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_PROTOTYPE( int req_link, (endpoint_t fs_e, ino_t link_parent,
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char *lastc, ino_t linked_file) );
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_PROTOTYPE( int req_lookup, (endpoint_t fs_e, ino_t dir_ino, ino_t root_ino,
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_mnx_Uid_t uid, _mnx_Gid_t gid, int flags,
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lookup_res_t *res) );
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_PROTOTYPE( int req_mkdir, (endpoint_t fs_e, ino_t inode_nr,
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char *lastc, _mnx_Uid_t uid, _mnx_Gid_t gid, _mnx_Mode_t dmode) );
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_PROTOTYPE( int req_mknod, (endpoint_t fs_e, ino_t inode_nr,
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char *lastc, _mnx_Uid_t uid, _mnx_Gid_t gid,
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_mnx_Mode_t dmode, Dev_t dev) );
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_PROTOTYPE( int req_mountpoint, (endpoint_t fs_e, ino_t inode_nr) );
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_PROTOTYPE( int req_newnode, (endpoint_t fs_e, _mnx_Uid_t uid,
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_mnx_Gid_t gid, _mnx_Mode_t dmode,
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Dev_t dev, struct node_details *res) );
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_PROTOTYPE( int req_putnode, (int fs_e, ino_t inode_nr, int count) );
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_PROTOTYPE( int req_rdlink, (endpoint_t fs_e, ino_t inode_nr,
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endpoint_t who_e, char *buf, size_t len) );
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_PROTOTYPE( int req_readsuper, (endpoint_t fs_e, char *driver_name,
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Dev_t dev, int readonly, int isroot,
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struct node_details *res_nodep) );
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_PROTOTYPE( int req_readwrite, (endpoint_t fs_e, ino_t inode_nr,
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u64_t pos, int rw_flag,
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endpoint_t user_e, char *user_addr,
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unsigned int num_of_bytes, u64_t *new_posp,
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unsigned int *cum_iop) );
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_PROTOTYPE( int req_rename, (endpoint_t fs_e, ino_t old_dir,
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char *old_name, ino_t new_dir, char *new_name) );
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_PROTOTYPE( int req_rmdir, (endpoint_t fs_e, ino_t inode_nr,
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char *lastc) );
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_PROTOTYPE(int req_slink, (endpoint_t fs_e, ino_t inode_nr, char *lastc,
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endpoint_t who_e, char *path_addr,
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int path_length, _mnx_Uid_t uid, _mnx_Gid_t gid) );
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_PROTOTYPE( int req_stat, (int fs_e, ino_t inode_nr, int who_e,
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char *buf, int pos) );
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_PROTOTYPE( int req_sync, (endpoint_t fs_e) );
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_PROTOTYPE( int req_unlink, (endpoint_t fs_e, ino_t inode_nr,
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char *lastc) );
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_PROTOTYPE( int req_unmount, (endpoint_t fs_e) );
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_PROTOTYPE( int req_utime, (endpoint_t fs_e, ino_t inode_nr,
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time_t actime, time_t modtime) );
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_PROTOTYPE( int req_newdriver, (endpoint_t fs_e, Dev_t dev,
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endpoint_t driver_e) );
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/* stadir.c */
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_PROTOTYPE( int do_chdir, (void) );
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_PROTOTYPE( int do_fchdir, (void) );
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_PROTOTYPE( int do_chroot, (void) );
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_PROTOTYPE( int do_fstat, (void) );
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_PROTOTYPE( int do_stat, (void) );
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_PROTOTYPE( int do_fstatfs, (void) );
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_PROTOTYPE( int do_rdlink, (void) );
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_PROTOTYPE( int do_lstat, (void) );
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/* time.c */
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_PROTOTYPE( int do_utime, (void) );
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/* utility.c */
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_PROTOTYPE( time_t clock_time, (void) );
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_PROTOTYPE( unsigned conv2, (int norm, int w) );
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_PROTOTYPE( long conv4, (int norm, long x) );
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_PROTOTYPE( int fetch_name, (char *path, int len, int flag) );
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_PROTOTYPE( int no_sys, (void) );
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_PROTOTYPE( int isokendpt_f, (char *f, int l, int e, int *p, int ft));
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_PROTOTYPE( void panic, (char *who, char *mess, int num) );
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#define okendpt(e, p) isokendpt_f(__FILE__, __LINE__, (e), (p), 1)
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#define isokendpt(e, p) isokendpt_f(__FILE__, __LINE__, (e), (p), 0)
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/* vmnt.c */
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_PROTOTYPE( struct vmnt *get_free_vmnt, (short *index) );
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_PROTOTYPE( struct vmnt *find_vmnt, (int fs_e) );
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/* vnode.c */
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_PROTOTYPE( struct vnode *get_free_vnode, (void) );
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_PROTOTYPE( struct vnode *find_vnode, (int fs_e, int numb) );
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_PROTOTYPE( void dup_vnode, (struct vnode *vp) );
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_PROTOTYPE( void put_vnode, (struct vnode *vp) );
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_PROTOTYPE( void vnode_clean_refs, (struct vnode *vp) );
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#if DO_SANITYCHECKS
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_PROTOTYPE( int check_vrefs, (void) );
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#endif
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/* write.c */
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_PROTOTYPE( int do_write, (void) );
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/* select.c */
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_PROTOTYPE( int do_select, (void) );
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_PROTOTYPE( int select_callback, (struct filp *, int ops) );
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_PROTOTYPE( void select_forget, (int fproc) );
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_PROTOTYPE( void select_timeout_check, (timer_t *) );
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_PROTOTYPE( void init_select, (void) );
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_PROTOTYPE( void select_unsuspend_by_endpt, (endpoint_t proc) );
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_PROTOTYPE( int select_notified, (int major, int minor, int ops) );
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/* timers.c */
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_PROTOTYPE( void fs_set_timer, (timer_t *tp, int delta,
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tmr_func_t watchdog, int arg) );
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_PROTOTYPE( void fs_expire_timers, (clock_t now) );
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_PROTOTYPE( void fs_cancel_timer, (timer_t *tp) );
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_PROTOTYPE( void fs_init_timer, (timer_t *tp) );
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