minix/servers/vfs/proto.h

   1 #ifndef __VFS_PROTO_H__
   2 #define __VFS_PROTO_H__
   3
   4 /* Function prototypes. */
   5
   6 #include <minix/rs.h>
   7 #include <minix/timers.h>
   8
   9 #include "request.h"
  10 #include "threads.h"
  11 #include "tll.h"
  12
  13 /* Structs used in prototypes must be declared as such first. */
  14 struct filp;
  15 struct fproc;
  16 struct timespec;
  17 struct vmnt;
  18 struct vnode;
  19 struct lookup;
  20 struct worker_thread;
  21 struct job;
  22
  23 /* comm.c */
  24 int drv_sendrec(endpoint_t drv_e, message *reqm);
  25 void fs_cancel(struct vmnt *vmp);
  26 int fs_sendrec(endpoint_t fs_e, message *reqm);
  27 int vm_sendrec(message *reqm);
  28 void fs_sendmore(struct vmnt *vmp);
  29 void send_work(void);
  30 int vm_vfs_procctl_handlemem(endpoint_t ep, vir_bytes mem, vir_bytes len, int flags);
  31
  32 /* device.c */
  33 int cdev_open(dev_t dev, int flags);
  34 int cdev_close(dev_t dev);
  35 int cdev_io(int op, dev_t dev, endpoint_t proc_e, vir_bytes buf, off_t pos,
  36         unsigned long bytes, int flags);
  37 dev_t cdev_map(dev_t dev, struct fproc *rfp);
  38 int cdev_select(dev_t dev, int ops);
  39 int cdev_cancel(dev_t dev);
  40 void cdev_reply(void);
  41 int bdev_open(dev_t dev, int access);
  42 int bdev_close(dev_t dev);
  43 void bdev_reply(void);
  44 void bdev_up(devmajor_t major);
  45 int do_ioctl(void);
  46
  47 /* dmap.c */
  48 void lock_dmap(struct dmap *dp);
  49 void unlock_dmap(struct dmap *dp);
  50 int do_mapdriver(void);
  51 void init_dmap(void);
  52 int dmap_driver_match(endpoint_t proc, devmajor_t major);
  53 void dmap_endpt_up(endpoint_t proc_nr, int is_blk);
  54 struct dmap *get_dmap(endpoint_t proc_e);
  55 struct dmap *get_dmap_by_major(devmajor_t major);
  56 void dmap_unmap_by_endpt(endpoint_t proc_nr);
  57 int map_service(struct rprocpub *rpub);
  58
  59 /* elf_core_dump.c */
  60 void write_elf_core_file(struct filp *f, int csig, char *exe_name);
  61
  62 /* exec.c */
  63 int pm_exec(vir_bytes path, size_t path_len, vir_bytes frame, size_t frame_len,
  64         vir_bytes *pc, vir_bytes *newsp, vir_bytes *ps_str);
  65
  66 /* filedes.c */
  67 void check_filp_locks(void);
  68 void check_filp_locks_by_me(void);
  69 void init_filps(void);
  70 struct filp *find_filp(struct vnode *vp, mode_t bits);
  71 int get_fd(struct fproc *rfp, int start, mode_t bits, int *k,
  72         struct filp **fpt);
  73 struct filp *get_filp(int fild, tll_access_t locktype);
  74 struct filp *get_filp2(struct fproc *rfp, int fild, tll_access_t locktype);
  75 void lock_filp(struct filp *filp, tll_access_t locktype);
  76 void unlock_filp(struct filp *filp);
  77 void unlock_filps(struct filp *filp1, struct filp *filp2);
  78 void invalidate_filp(struct filp *);
  79 void invalidate_filp_by_endpt(endpoint_t proc_e);
  80 void invalidate_filp_by_char_major(devmajor_t major);
  81 void close_filp(struct filp *fp);
  82 int do_copyfd(void);
  83
  84 /* fscall.c */
  85 void nested_fs_call(message *m);
  86
  87 /* link.c */
  88 int do_link(void);
  89 int do_unlink(void);
  90 int do_rename(void);
  91 int do_truncate(void);
  92 int do_ftruncate(void);
  93 int truncate_vnode(struct vnode *vp, off_t newsize);
  94 int rdlink_direct(char *orig_path, char *link_path, struct fproc *rfp);
  95
  96 /* lock.c */
  97 int lock_op(struct filp *f, int req);
  98 void lock_revive(void);
  99
 100 /* main.c */
 101 int main(void);
 102 void lock_proc(struct fproc *rfp);
 103 void unlock_proc(struct fproc *rfp);
 104 void replycode(endpoint_t whom, int result);
 105 void service_pm_postponed(void);
 106 void thread_cleanup(void);
 107
 108 /* misc.c */
 109 void pm_exit(void);
 110 int do_fcntl(void);
 111 void pm_fork(endpoint_t pproc, endpoint_t cproc, pid_t cpid);
 112 void pm_setgid(endpoint_t proc_e, int egid, int rgid);
 113 void pm_setuid(endpoint_t proc_e, int euid, int ruid);
 114 void pm_setgroups(endpoint_t proc_e, int ngroups, gid_t *addr);
 115 void pm_setsid(endpoint_t proc_e);
 116 int do_sync(void);
 117 int do_fsync(void);
 118 void pm_reboot(void);
 119 int do_svrctl(void);
 120 int do_getsysinfo(void);
 121 int do_vm_call(void);
 122 int pm_dumpcore(int sig, vir_bytes exe_name);
 123 void ds_event(void);
 124 int dupvm(struct fproc *fp, int pfd, int *vmfd, struct filp **f);
 125 int do_getrusage(void);
 126
 127 /* mount.c */
 128 int do_mount(void);
 129 int do_umount(void);
 130 int is_nonedev(dev_t dev);
 131 void mount_pfs(void);
 132 int mount_fs(dev_t dev, char mount_dev[PATH_MAX], char mount_path[PATH_MAX],
 133         endpoint_t fs_e, int rdonly, char mount_type[FSTYPE_MAX],
 134         char mount_label[LABEL_MAX]);
 135 int unmount(dev_t dev, char label[LABEL_MAX]);
 136 void unmount_all(int force);
 137
 138 /* open.c */
 139 int do_close(void);
 140 int close_fd(struct fproc *rfp, int fd_nr);
 141 int common_open(char path[PATH_MAX], int oflags, mode_t omode);
 142 int do_creat(void);
 143 int do_lseek(void);
 144 int do_mknod(void);
 145 int do_mkdir(void);
 146 int do_open(void);
 147 int do_creat(void);
 148 int do_slink(void);
 149 int actual_lseek(struct fproc *rfp, int seekfd, int seekwhence, off_t offset,
 150         off_t *newposp);
 151
 152 /* path.c */
 153 struct vnode *advance(struct vnode *dirp, struct lookup *resolve, struct
 154         fproc *rfp);
 155 struct vnode *eat_path(struct lookup *resolve, struct fproc *rfp);
 156 struct vnode *last_dir(struct lookup *resolve, struct fproc *rfp);
 157 void lookup_init(struct lookup *resolve, char *path, int flags, struct
 158         vmnt **vmp, struct vnode **vp);
 159 int get_name(struct vnode *dirp, struct vnode *entry, char *_name);
 160 int canonical_path(char *orig_path, struct fproc *rfp);
 161 int do_checkperms(void);
 162
 163 /* pipe.c */
 164 int do_pipe2(void);
 165 int map_vnode(struct vnode *vp, endpoint_t fs_e);
 166 void unpause(void);
 167 int pipe_check(struct filp *filp, int rw_flag, int oflags, int bytes,
 168         int notouch);
 169 void release(struct vnode *vp, int op, int count);
 170 void revive(endpoint_t proc_e, int returned);
 171 void suspend(int why);
 172 void pipe_suspend(struct filp *rfilp, vir_bytes buf, size_t size);
 173 void unsuspend_by_endpt(endpoint_t proc_e);
 174 void wait_for(endpoint_t proc_e);
 175
 176 /* protect.c */
 177 int do_access(void);
 178 int do_chmod(void);
 179 int do_chown(void);
 180 int do_umask(void);
 181 int forbidden(struct fproc *rfp, struct vnode *vp, mode_t
 182         access_desired);
 183 int read_only(struct vnode *vp);
 184
 185 /* read.c */
 186 int do_read(void);
 187 int do_getdents(void);
 188 void lock_bsf(void);
 189 void unlock_bsf(void);
 190 void check_bsf_lock(void);
 191 int do_read_write_peek(int rw_flag, int fd, vir_bytes buf, size_t bytes);
 192 int actual_read_write_peek(struct fproc *rfp, int rw_flag, int fd, vir_bytes buf,
 193         size_t bytes);
 194 int read_write(struct fproc *rfp, int rw_flag, struct filp *f, vir_bytes buffer,
 195         size_t nbytes, endpoint_t for_e);
 196 int rw_pipe(int rw_flag, endpoint_t usr, struct filp *f, vir_bytes buf,
 197         size_t req_size);
 198
 199 /* request.c */
 200 int req_breadwrite(endpoint_t fs_e, endpoint_t user_e, dev_t dev, off_t pos,
 201         unsigned int num_of_bytes, vir_bytes user_addr, int rw_flag,
 202         off_t *new_posp, unsigned int *cum_iop);
 203 int req_chmod(endpoint_t fs_e, ino_t inode_nr, mode_t rmode,
 204         mode_t *new_modep);
 205 int req_chown(endpoint_t fs_e, ino_t inode_nr, uid_t newuid, gid_t newgid,
 206         mode_t *new_modep);
 207 int req_create(endpoint_t fs_e, ino_t inode_nr, int omode, uid_t uid,
 208         gid_t gid, char *path, node_details_t *res);
 209 int req_flush(endpoint_t fs_e, dev_t dev);
 210 int req_statvfs(endpoint_t fs_e, struct statvfs *buf);
 211 int req_ftrunc(endpoint_t fs_e, ino_t inode_nr, off_t start, off_t end);
 212 int req_getdents(endpoint_t fs_e, ino_t inode_nr, off_t pos, vir_bytes buf,
 213         size_t size, off_t *new_pos, int direct);
 214 int req_inhibread(endpoint_t fs_e, ino_t inode_nr);
 215 int req_link(endpoint_t fs_e, ino_t link_parent, char *lastc,
 216         ino_t linked_file);
 217 int req_lookup(endpoint_t fs_e, ino_t dir_ino, ino_t root_ino, uid_t uid,
 218         gid_t gid, struct lookup *resolve, lookup_res_t *res,
 219         struct fproc *rfp);
 220 int req_mkdir(endpoint_t fs_e, ino_t inode_nr, char *lastc, uid_t uid,
 221         gid_t gid, mode_t dmode);
 222 int req_mknod(endpoint_t fs_e, ino_t inode_nr, char *lastc, uid_t uid,
 223         gid_t gid, mode_t dmode, dev_t dev);
 224 int req_mountpoint(endpoint_t fs_e, ino_t inode_nr);
 225 int req_newnode(endpoint_t fs_e, uid_t uid, gid_t gid, mode_t dmode,
 226         dev_t dev, struct node_details *res);
 227 int req_putnode(int fs_e, ino_t inode_nr, int count);
 228 int req_rdlink(endpoint_t fs_e, ino_t inode_nr, endpoint_t proc_e,
 229         vir_bytes buf, size_t len, int direct);
 230 int req_readsuper(struct vmnt *vmp, char *driver_name, dev_t dev, int readonly,
 231         int isroot, struct node_details *res_nodep, unsigned int *fs_flags);
 232 int req_readwrite(endpoint_t fs_e, ino_t inode_nr, off_t pos, int rw_flag,
 233         endpoint_t user_e, vir_bytes user_addr, unsigned int num_of_bytes,
 234         off_t *new_posp, unsigned int *cum_iop);
 235 int req_bpeek(endpoint_t fs_e, dev_t dev, off_t pos, unsigned int num_of_bytes);
 236 int req_peek(endpoint_t fs_e, ino_t inode_nr, off_t pos, unsigned int bytes);
 237 int req_rename(endpoint_t fs_e, ino_t old_dir, char *old_name, ino_t new_dir,
 238         char *new_name);
 239 int req_rmdir(endpoint_t fs_e, ino_t inode_nr, char *lastc);
 240 int req_slink(endpoint_t fs_e, ino_t inode_nr, char *lastc, endpoint_t proc_e,
 241         vir_bytes path_addr, size_t path_length, uid_t uid, gid_t gid);
 242 int req_stat(endpoint_t fs_e, ino_t inode_nr, endpoint_t proc_e, vir_bytes buf);
 243 int req_sync(endpoint_t fs_e);
 244 int req_unlink(endpoint_t fs_e, ino_t inode_nr, char *lastc);
 245 int req_unmount(endpoint_t fs_e);
 246 int req_utime(endpoint_t fs_e, ino_t inode_nr, struct timespec * actv,
 247         struct timespec * modtv);
 248 int req_newdriver(endpoint_t fs_e, dev_t dev, char *label);
 249
 250 /* stadir.c */
 251 int do_chdir(void);
 252 int do_fchdir(void);
 253 int do_chroot(void);
 254 int do_fstat(void);
 255 int do_stat(void);
 256 int do_statvfs(void);
 257 int do_fstatvfs(void);
 258 int do_getvfsstat(void);
 259 int do_rdlink(void);
 260 int do_lstat(void);
 261 int update_statvfs(struct vmnt *vmp, struct statvfs *buf);
 262
 263 /* time.c */
 264 int do_utimens(void);
 265
 266 /* tll.c */
 267 void tll_downgrade(tll_t *tllp);
 268 int tll_haspendinglock(tll_t *tllp);
 269 void tll_init(tll_t *tllp);
 270 int tll_islocked(tll_t *tllp);
 271 int tll_lock(tll_t *tllp, tll_access_t locktype);
 272 int tll_locked_by_me(tll_t *tllp);
 273 void tll_lockstat(tll_t *tllp);
 274 int tll_unlock(tll_t *tllp);
 275 void tll_upgrade(tll_t *tllp);
 276
 277 /* utility.c */
 278 struct timespec clock_timespec(void);
 279 int copy_path(char *dest, size_t size);
 280 int fetch_name(vir_bytes path, size_t len, char *dest);
 281 int isokendpt_f(const char *f, int l, endpoint_t e, int *p, int ft);
 282 int in_group(struct fproc *rfp, gid_t grp);
 283 int sys_datacopy_wrapper(endpoint_t src, vir_bytes srcv, endpoint_t dst, vir_bytes dstv,
 284         size_t len);
 285
 286 #define okendpt(e, p) isokendpt_f(__FILE__, __LINE__, (e), (p), 1)
 287 #define isokendpt(e, p) isokendpt_f(__FILE__, __LINE__, (e), (p), 0)
 288
 289 /* vmnt.c */
 290 void check_vmnt_locks(void);
 291 void check_vmnt_locks_by_me(struct fproc *rfp);
 292 void mark_vmnt_free(struct vmnt *vmp);
 293 struct vmnt *get_free_vmnt(void);
 294 struct vmnt *find_vmnt(endpoint_t fs_e);
 295 struct vmnt *get_locked_vmnt(struct fproc *rfp);
 296 void init_vmnts(void);
 297 int lock_vmnt(struct vmnt *vp, tll_access_t locktype);
 298 void unlock_vmnt(struct vmnt *vp);
 299 void vmnt_unmap_by_endpt(endpoint_t proc_e);
 300 void fetch_vmnt_paths(void);
 301 void upgrade_vmnt_lock(struct vmnt *vmp);
 302 void downgrade_vmnt_lock(struct vmnt *vmp);
 303
 304 /* vnode.c */
 305 void check_vnode_locks(void);
 306 void check_vnode_locks_by_me(struct fproc *rfp);
 307 struct vnode *get_free_vnode(void);
 308 struct vnode *find_vnode(int fs_e, ino_t inode);
 309 void init_vnodes(void);
 310 int is_vnode_locked(struct vnode *vp);
 311 int lock_vnode(struct vnode *vp, tll_access_t locktype);
 312 void unlock_vnode(struct vnode *vp);
 313 void dup_vnode(struct vnode *vp);
 314 void put_vnode(struct vnode *vp);
 315 void vnode_clean_refs(struct vnode *vp);
 316 void upgrade_vnode_lock(struct vnode *vp);
 317
 318 /* write.c */
 319 int do_write(void);
 320
 321 /* gcov.c */
 322 int do_gcov_flush(void);
 323 #if ! USE_COVERAGE
 324 #define do_gcov_flush NULL
 325 #endif
 326
 327 /* select.c */
 328 int do_select(void);
 329 void init_select(void);
 330 void select_callback(struct filp *, int ops);
 331 void select_forget(void);
 332 void select_reply1(endpoint_t driver_e, devminor_t minor, int status);
 333 void select_reply2(endpoint_t driver_e, devminor_t minor, int status);
 334 void select_timeout_check(minix_timer_t *);
 335 void select_unsuspend_by_endpt(endpoint_t proc);
 336
 337 /* worker.c */
 338 void worker_init(void);
 339 int worker_available(void);
 340 struct worker_thread *worker_get(thread_t worker_tid);
 341 void worker_signal(struct worker_thread *worker);
 342 int worker_can_start(struct fproc *rfp);
 343 void worker_start(struct fproc *rfp, void (*func)(void), message *m_ptr,
 344         int use_spare);
 345 void worker_stop(struct worker_thread *worker);
 346 void worker_stop_by_endpt(endpoint_t proc_e);
 347 void worker_wait(void);
 348 struct worker_thread *worker_suspend(void);
 349 void worker_resume(struct worker_thread *org_self);
 350 void worker_set_proc(struct fproc *rfp);
 351 #endif