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minix/servers/vfs/proto.h
Ben Gras 3cc092ff06 . new kernel call sysctl for generic unprivileged system operations; 
now used for printing diagnostic messages through the kernel message
   buffer. this lets processes print diagnostics without sending messages
   to tty and log directly, simplifying the message protocol a lot and
   reducing difficulties with deadlocks and other situations in which
   diagnostics are blackholed (e.g. grants don't work). this makes
   DIAGNOSTICS(_S), ASYN_DIAGNOSTICS and DIAG_REPL obsolete, although tty
   and log still accept the codes for 'old' binaries. This also simplifies
   diagnostics in several servers and drivers - only tty needs its own
   kputc() now.
 . simplifications in vfs, and some effort to get the vnode references
   right (consistent) even during shutdown. m_mounted_on is now NULL
   for root filesystems (!) (the original and new root), a less awkward
   special case than 'm_mounted_on == m_root_node'. root now has exactly
   one reference, to root, if no files are open, just like all other
   filesystems. m_driver_e is unused.
2009-01-26 17:43:59 +00:00

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/* Function prototypes. */
#include "timers.h"
#include "request.h"
/* Structs used in prototypes must be declared as such first. */
struct filp;
struct fproc;
struct vmnt;
struct vnode;
/* 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_devctl, (void) );
_PROTOTYPE( int fs_devctl, (int req, int dev, int proc_nr_e, int style,
int force) );
_PROTOTYPE( int do_mapdriver, (void) );
_PROTOTYPE( void build_dmap, (void) );
_PROTOTYPE( int map_driver, (int major, int proc_nr, int dev_style,
int force) );
_PROTOTYPE( int dmap_driver_match, (int 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) );
/* 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 inval_filp, (struct filp *) );
/* kputc.c */
_PROTOTYPE( void diag_repl, (void) );
/* 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_vn, (struct vnode *vp, off_t newsize) );
/* 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( 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) );
/* mmap.c */
_PROTOTYPE( int do_vm_mmap, (void) );
/* mount.c */
_PROTOTYPE( int do_fslogin, (void) );
_PROTOTYPE( int do_mount, (void) );
_PROTOTYPE( int do_umount, (void) );
_PROTOTYPE( int unmount, (Dev_t dev) );
/* open.c */
_PROTOTYPE( int do_close, (void) );
_PROTOTYPE( int close_fd, (struct fproc *rfp, int fd_nr) );
_PROTOTYPE( void close_filp, (struct filp *fp) );
_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( int lookup_rel_vp, (struct vnode *start_node, int flags,
int use_realuid, struct vnode **vpp) );
_PROTOTYPE( int lookup_vp, (int flags, int use_realuid,
struct vnode **vpp) );
_PROTOTYPE( int lookup_lastdir_rel, (struct vnode *start_node,
int use_realuid, struct vnode **vpp) );
_PROTOTYPE( int lookup_lastdir, (int use_realuid, struct vnode **vpp) );
/* pipe.c */
_PROTOTYPE( int do_pipe, (void) );
_PROTOTYPE( void unpause, (int proc_nr_e) );
_PROTOTYPE( int Xpipe_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_cancel_pipe, (struct filp *f) );
_PROTOTYPE( int select_match_pipe, (struct filp *f) );
_PROTOTYPE( void unsuspend_by_endpt, (int) );
_PROTOTYPE( void select_reply1, (void) );
_PROTOTYPE( void select_reply2, (void) );
/* 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, int use_realuid) );
_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, _mnx_Mode_t rmode,
mode_t *new_modep) );
_PROTOTYPE( int req_chown, (endpoint_t fs_e, ino_t inode_nr,
_mnx_Uid_t newuid, _mnx_Gid_t newgid, mode_t *new_modep) );
_PROTOTYPE( int req_create, (int fs_e, ino_t inode_nr, int omode,
int uid, int 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_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,
off_t pos, cp_grant_id_t gid, size_t size, off_t *pos_change) );
_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, size_t path_off,
ino_t dir_ino, ino_t root_ino, _mnx_Uid_t uid,
_mnx_Gid_t gid, int flags, lookup_res_t *res) );
_PROTOTYPE( int req_mkdir, (endpoint_t fs_e, ino_t inode_nr,
char *lastc, _mnx_Uid_t uid, _mnx_Gid_t gid, _mnx_Mode_t dmode) );
_PROTOTYPE( int req_mknod, (endpoint_t fs_e, ino_t inode_nr,
char *lastc, _mnx_Uid_t uid, _mnx_Gid_t gid,
_mnx_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, _mnx_Uid_t uid,
_mnx_Gid_t gid, _mnx_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, vir_bytes buf, size_t len) );
_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,
int inode_index, 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,
int path_length, _mnx_Uid_t uid, _mnx_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_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, int e, int *p, int ft));
_PROTOTYPE( void panic, (char *who, char *mess, int num) );
#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, (char *file, int line) );
_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 0
_PROTOTYPE( struct vnode *get_vnode, (int fs_e, int inode_nr) );
_PROTOTYPE( struct vnode *get_vnode_x, (int fs_e, int inode_nr) );
_PROTOTYPE( void mark_vn, (struct vnode *vp, char *file, int line) );
#endif
#define CHECK_VREFS do { if(!check_vrefs()) { \
printf("VFS:%s:%d: check_vrefs failed\n", __FILE__, __LINE__); \
panic("VFS", "check_vrefs failed", NO_NUM);} } while(0)
_PROTOTYPE( int check_vrefs, (void) );
/* write.c */
_PROTOTYPE( int do_write, (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, (int proc) );
_PROTOTYPE( int select_notified, (int major, int minor, int ops) );
/* timers.c */
_PROTOTYPE( void fs_set_timer, (timer_t *tp, int delta,
tmr_func_t watchdog, int arg) );
_PROTOTYPE( void fs_expire_timers, (clock_t now) );
_PROTOTYPE( void fs_cancel_timer, (timer_t *tp) );
_PROTOTYPE( void fs_init_timer, (timer_t *tp) );
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