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minix/servers/vfs/proto.h
Thomas Veerman 13ef7f1f38 Prepare VFS to support back calls from PFS. For security reasons and to support 
file descriptor passing, PFS does some back calls to VFS. For example, to
verify the validity of a path provided by a process and to tell VFS it must
copy file descriptors from one process to another.
2010-08-30 13:44:07 +00:00

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/* Function prototypes. */
#include "timers.h"
#include "request.h"
#include <minix/rs.h>
/* Structs used in prototypes must be declared as such first. */
struct filp;
struct fproc;
struct vmnt;
struct vnode;
typedef struct filp * filp_id_t;
/* device.c */
_PROTOTYPE( int dev_open, (dev_t dev, int proc, int flags) );
_PROTOTYPE( int dev_reopen, (dev_t dev, int filp_no, int flags) );
_PROTOTYPE( int dev_close, (dev_t dev, int filp_no) );
_PROTOTYPE( int dev_io, (int op, dev_t dev, int proc, void *buf,
u64_t pos, int bytes, int flags, int suspend_reopen) );
_PROTOTYPE( int gen_opcl, (int op, dev_t dev, int proc, int flags) );
_PROTOTYPE( int gen_io, (int task_nr, message *mess_ptr) );
_PROTOTYPE( int asyn_io, (int task_nr, message *mess_ptr) );
_PROTOTYPE( int no_dev, (int op, dev_t dev, int proc, int flags) );
_PROTOTYPE( int no_dev_io, (int, message *) );
_PROTOTYPE( int tty_opcl, (int op, dev_t dev, int proc, int flags) );
_PROTOTYPE( int ctty_opcl, (int op, dev_t dev, int proc, int flags) );
_PROTOTYPE( int clone_opcl, (int op, dev_t dev, int proc, int flags) );
_PROTOTYPE( int ctty_io, (int task_nr, message *mess_ptr) );
_PROTOTYPE( int do_ioctl, (void) );
_PROTOTYPE( void pm_setsid, (int proc_e) );
_PROTOTYPE( void dev_status, (message *) );
_PROTOTYPE( void dev_up, (int major) );
_PROTOTYPE( endpoint_t suspended_ep, (endpoint_t driver,
cp_grant_id_t g) );
_PROTOTYPE( void reopen_reply, (void) );
/* dmap.c */
_PROTOTYPE( int do_mapdriver, (void) );
_PROTOTYPE( int map_service, (struct rprocpub *rpub) );
_PROTOTYPE( void build_dmap, (void) );
_PROTOTYPE( int map_driver, (const char *label, int major, endpoint_t proc_nr,
int dev_style, int flags) );
_PROTOTYPE( int dmap_driver_match, (endpoint_t proc, int major) );
_PROTOTYPE( void dmap_unmap_by_endpt, (int proc_nr) );
_PROTOTYPE( void dmap_endpt_up, (int proc_nr) );
/* exec.c */
_PROTOTYPE( int pm_exec, (int proc_e, char *path, vir_bytes path_len,
char *frame, vir_bytes frame_len, vir_bytes *pc));
/* filedes.c */
_PROTOTYPE( struct filp *find_filp, (struct vnode *vp, mode_t bits) );
_PROTOTYPE( int get_fd, (int start, mode_t bits, int *k,
struct filp **fpt) );
_PROTOTYPE( struct filp *get_filp, (int fild) );
_PROTOTYPE( struct filp *get_filp2, (struct fproc *rfp, int fild) );
_PROTOTYPE( int invalidate, (struct filp *) );
_PROTOTYPE( filp_id_t verify_fd, (endpoint_t ep, int fd) );
_PROTOTYPE( int do_verify_fd, (void) );
_PROTOTYPE( int set_filp, (filp_id_t sfilp) );
_PROTOTYPE( int do_set_filp, (void) );
_PROTOTYPE( int copy_filp, (endpoint_t to_ep, filp_id_t cfilp) );
_PROTOTYPE( int do_copy_filp, (void) );
_PROTOTYPE( int put_filp, (filp_id_t pfilp) );
_PROTOTYPE( int do_put_filp, (void) );
_PROTOTYPE( int cancel_fd, (endpoint_t ep, int fd) );
_PROTOTYPE( int do_cancel_fd, (void) );
_PROTOTYPE( void close_filp, (struct filp *fp) );
/* fscall.c */
_PROTOTYPE( void nested_fs_call, (message *m) );
_PROTOTYPE( void nested_dev_call, (message *m) );
/* link.c */
_PROTOTYPE( int do_link, (void) );
_PROTOTYPE( int do_unlink, (void) );
_PROTOTYPE( int do_rename, (void) );
_PROTOTYPE( int do_truncate, (void) );
_PROTOTYPE( int do_ftruncate, (void) );
_PROTOTYPE( int truncate_vnode, (struct vnode *vp, off_t newsize) );
_PROTOTYPE( int rdlink_direct, (char *orig_path, char *link_path,
struct fproc *rfp) );
/* lock.c */
_PROTOTYPE( int lock_op, (struct filp *f, int req) );
_PROTOTYPE( void lock_revive, (void) );
/* main.c */
_PROTOTYPE( int main, (void) );
_PROTOTYPE( void reply, (int whom, int result) );
/* misc.c */
_PROTOTYPE( int do_dup, (void) );
_PROTOTYPE( void pm_exit, (int proc) );
_PROTOTYPE( int do_fcntl, (void) );
_PROTOTYPE( void pm_fork, (int pproc, int cproc, int cpid) );
_PROTOTYPE( void pm_setgid, (int proc_e, int egid, int rgid) );
_PROTOTYPE( void pm_setuid, (int proc_e, int euid, int ruid) );
_PROTOTYPE( void pm_setgroups, (int proc_e, int ngroups, gid_t *addr) );
_PROTOTYPE( int do_sync, (void) );
_PROTOTYPE( int do_fsync, (void) );
_PROTOTYPE( void pm_reboot, (void) );
_PROTOTYPE( int do_svrctl, (void) );
_PROTOTYPE( int do_getsysinfo, (void) );
_PROTOTYPE( int pm_dumpcore, (int proc_e, struct mem_map *seg_ptr) );
_PROTOTYPE( void ds_event, (void) );
/* mount.c */
_PROTOTYPE( int do_fslogin, (void) );
_PROTOTYPE( int do_mount, (void) );
_PROTOTYPE( int do_umount, (void) );
_PROTOTYPE( int unmount, (dev_t dev, char *label) );
/* open.c */
_PROTOTYPE( int do_close, (void) );
_PROTOTYPE( int close_fd, (struct fproc *rfp, int fd_nr) );
_PROTOTYPE( void close_reply, (void) );
_PROTOTYPE( int do_creat, (void) );
_PROTOTYPE( int do_lseek, (void) );
_PROTOTYPE( int do_llseek, (void) );
_PROTOTYPE( int do_mknod, (void) );
_PROTOTYPE( int do_mkdir, (void) );
_PROTOTYPE( int do_open, (void) );
_PROTOTYPE( int do_slink, (void) );
_PROTOTYPE( int do_vm_open, (void) );
_PROTOTYPE( int do_vm_close, (void) );
/* path.c */
_PROTOTYPE( struct vnode *advance, (struct vnode *dirp, int flags,
struct fproc *rfp) );
_PROTOTYPE( struct vnode *eat_path, (int flags, struct fproc *rfp) );
_PROTOTYPE( struct vnode *last_dir, (struct fproc *rfp) );
_PROTOTYPE( int get_name, (struct vnode *dirp, struct vnode *entry,
char *_name) );
_PROTOTYPE( int canonical_path, (char *orig_path, char *canon_path,
struct fproc *rfp) );
_PROTOTYPE( int check_perms, (endpoint_t ep, cp_grant_id_t gid,
int strlen) );
_PROTOTYPE( int do_check_perms, (void) );
/* pipe.c */
_PROTOTYPE( int do_pipe, (void) );
_PROTOTYPE( int map_vnode, (struct vnode *vp) );
_PROTOTYPE( void unpause, (int proc_nr_e) );
_PROTOTYPE( int pipe_check, (struct vnode *vp, int rw_flag,
int oflags, int bytes, u64_t position, int notouch) );
_PROTOTYPE( void release, (struct vnode *vp, int call_nr, int count) );
_PROTOTYPE( void revive, (int proc_nr, int bytes) );
_PROTOTYPE( void suspend, (int task) );
_PROTOTYPE( void pipe_suspend, (int rw_flag, int fd_nr, char *buf,
size_t size) );
_PROTOTYPE( int select_request_pipe, (struct filp *f, int *ops, int bl) );
_PROTOTYPE( int select_match_pipe, (struct filp *f) );
_PROTOTYPE( void unsuspend_by_endpt, (endpoint_t) );
_PROTOTYPE( void select_reply1, (void) );
_PROTOTYPE( void select_reply2, (void) );
_PROTOTYPE( void wait_for, (endpoint_t) );
#if DO_SANITYCHECKS
_PROTOTYPE( int check_pipe, (void) );
#endif
/* protect.c */
_PROTOTYPE( int do_access, (void) );
_PROTOTYPE( int do_chmod, (void) );
_PROTOTYPE( int do_chown, (void) );
_PROTOTYPE( int do_umask, (void) );
_PROTOTYPE( int forbidden, (struct vnode *vp, mode_t access_desired) );
_PROTOTYPE( int read_only, (struct vnode *vp) );
/* read.c */
_PROTOTYPE( int do_read, (void) );
_PROTOTYPE( int do_getdents, (void) );
_PROTOTYPE( int read_write, (int rw_flag) );
_PROTOTYPE( int rw_pipe, (int rw_flag, endpoint_t usr,
int fd_nr, struct filp *f, char *buf, size_t req_size) );
/* request.c */
_PROTOTYPE( int req_breadwrite, (endpoint_t fs_e, endpoint_t user_e,
dev_t dev, u64_t pos, unsigned int num_of_bytes,
char *user_addr, int rw_flag,
u64_t *new_posp, unsigned int *cum_iop) );
_PROTOTYPE( int req_chmod, (int fs_e, ino_t inode_nr, mode_t rmode,
mode_t *new_modep) );
_PROTOTYPE( int req_chown, (endpoint_t fs_e, ino_t inode_nr,
uid_t newuid, gid_t newgid, mode_t *new_modep) );
_PROTOTYPE( int req_create, (int fs_e, ino_t inode_nr, int omode,
uid_t uid, gid_t gid, char *path, node_details_t *res) );
_PROTOTYPE( int req_flush, (endpoint_t fs_e, dev_t dev) );
_PROTOTYPE( int req_fstatfs, (int fs_e, int who_e, char *buf) );
_PROTOTYPE( int req_statvfs, (int fs_e, int who_e, char *buf) );
_PROTOTYPE( int req_ftrunc, (endpoint_t fs_e, ino_t inode_nr,
off_t start, off_t end) );
_PROTOTYPE( int req_getdents, (endpoint_t fs_e, ino_t inode_nr,
u64_t pos, char *buf, size_t size,
u64_t *new_pos, int direct) );
_PROTOTYPE( int req_inhibread, (endpoint_t fs_e, ino_t inode_nr) );
_PROTOTYPE( int req_link, (endpoint_t fs_e, ino_t link_parent,
char *lastc, ino_t linked_file) );
_PROTOTYPE( int req_lookup, (endpoint_t fs_e, ino_t dir_ino, ino_t root_ino,
uid_t uid, gid_t gid, int flags,
lookup_res_t *res, struct fproc *rfp) );
_PROTOTYPE( int req_mkdir, (endpoint_t fs_e, ino_t inode_nr,
char *lastc, uid_t uid, gid_t gid, mode_t dmode) );
_PROTOTYPE( int req_mknod, (endpoint_t fs_e, ino_t inode_nr,
char *lastc, uid_t uid, gid_t gid,
mode_t dmode, dev_t dev) );
_PROTOTYPE( int req_mountpoint, (endpoint_t fs_e, ino_t inode_nr) );
_PROTOTYPE( int req_newnode, (endpoint_t fs_e, uid_t uid,
gid_t gid, mode_t dmode,
dev_t dev, struct node_details *res) );
_PROTOTYPE( int req_putnode, (int fs_e, ino_t inode_nr, int count) );
_PROTOTYPE( int req_rdlink, (endpoint_t fs_e, ino_t inode_nr,
endpoint_t who_e, char *buf, size_t len,
int direct) );
_PROTOTYPE( int req_readsuper, (endpoint_t fs_e, char *driver_name,
dev_t dev, int readonly, int isroot,
struct node_details *res_nodep) );
_PROTOTYPE( int req_readwrite, (endpoint_t fs_e, ino_t inode_nr,
u64_t pos, int rw_flag,
endpoint_t user_e, char *user_addr,
unsigned int num_of_bytes, u64_t *new_posp,
unsigned int *cum_iop) );
_PROTOTYPE( int req_rename, (endpoint_t fs_e, ino_t old_dir,
char *old_name, ino_t new_dir, char *new_name) );
_PROTOTYPE( int req_rmdir, (endpoint_t fs_e, ino_t inode_nr,
char *lastc) );
_PROTOTYPE(int req_slink, (endpoint_t fs_e, ino_t inode_nr, char *lastc,
endpoint_t who_e, char *path_addr,
unsigned short path_length, uid_t uid, gid_t gid) );
_PROTOTYPE( int req_stat, (int fs_e, ino_t inode_nr, int who_e,
char *buf, int pos) );
_PROTOTYPE( int req_sync, (endpoint_t fs_e) );
_PROTOTYPE( int req_unlink, (endpoint_t fs_e, ino_t inode_nr,
char *lastc) );
_PROTOTYPE( int req_unmount, (endpoint_t fs_e) );
_PROTOTYPE( int req_utime, (endpoint_t fs_e, ino_t inode_nr,
time_t actime, time_t modtime) );
_PROTOTYPE( int req_newdriver, (endpoint_t fs_e, dev_t dev,
endpoint_t driver_e) );
/* stadir.c */
_PROTOTYPE( int do_chdir, (void) );
_PROTOTYPE( int do_fchdir, (void) );
_PROTOTYPE( int do_chroot, (void) );
_PROTOTYPE( int do_fstat, (void) );
_PROTOTYPE( int do_stat, (void) );
_PROTOTYPE( int do_fstatfs, (void) );
_PROTOTYPE( int do_statvfs, (void) );
_PROTOTYPE( int do_fstatvfs, (void) );
_PROTOTYPE( int do_rdlink, (void) );
_PROTOTYPE( int do_lstat, (void) );
/* time.c */
_PROTOTYPE( int do_utime, (void) );
/* utility.c */
_PROTOTYPE( time_t clock_time, (void) );
_PROTOTYPE( unsigned conv2, (int norm, int w) );
_PROTOTYPE( long conv4, (int norm, long x) );
_PROTOTYPE( int fetch_name, (char *path, int len, int flag) );
_PROTOTYPE( int no_sys, (void) );
_PROTOTYPE( int isokendpt_f, (char *f, int l, endpoint_t e, int *p, int ft));
_PROTOTYPE( int in_group, (struct fproc *rfp, gid_t grp) );
#define okendpt(e, p) isokendpt_f(__FILE__, __LINE__, (e), (p), 1)
#define isokendpt(e, p) isokendpt_f(__FILE__, __LINE__, (e), (p), 0)
/* vmnt.c */
_PROTOTYPE( struct vmnt *get_free_vmnt, (short *index) );
_PROTOTYPE( struct vmnt *find_vmnt, (int fs_e) );
/* vnode.c */
_PROTOTYPE( struct vnode *get_free_vnode, (void) );
_PROTOTYPE( struct vnode *find_vnode, (int fs_e, int numb) );
_PROTOTYPE( void dup_vnode, (struct vnode *vp) );
_PROTOTYPE( void put_vnode, (struct vnode *vp) );
_PROTOTYPE( void vnode_clean_refs, (struct vnode *vp) );
#if DO_SANITYCHECKS
_PROTOTYPE( int check_vrefs, (void) );
#endif
/* write.c */
_PROTOTYPE( int do_write, (void) );
/* gcov.c */
_PROTOTYPE( int do_gcov_flush, (void) );
/* select.c */
_PROTOTYPE( int do_select, (void) );
_PROTOTYPE( int select_callback, (struct filp *, int ops) );
_PROTOTYPE( void select_forget, (int fproc) );
_PROTOTYPE( void select_timeout_check, (timer_t *) );
_PROTOTYPE( void init_select, (void) );
_PROTOTYPE( void select_unsuspend_by_endpt, (endpoint_t proc) );
_PROTOTYPE( int select_notified, (int major, int minor, int ops) );
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