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minix/servers/vfs/proto.h

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Initial revision
2005-04-21 16:53:53 +02:00
/* Function prototypes. */
Started select() implementation. Added interface to select() for pipes (also named pipes), and select() stubs for regular files. Added timer library in FS that select() is the first customer of. This is unfinished, but committed anyway to get a new release out to Al and testers.
2005-06-17 15:41:12 +02:00
#include "timers.h"
Merge of VFS by Balasz Gerofi with Minix trunk.
2006-10-25 15:40:36 +02:00
#include "request.h"
FS support for grant-based i/o. For character device i/o, FS does a so-called 'magic' grant to let the driver copy from or to user space. As this is done in FS address space, the driver is told to do this in FS address space. The redirection to the right user process then happens at copy-time in the kernel, using the FS grant table. This also happens for DEV_READ and DEV_WRITE on block devices. For other block device i/o, which happens from/to FS buffers, FS does a 'direct' grant to its own address space for the driver. After the i/o returns, this access has to be K-I-L-L-E-D, revoked. Sometimes this is after a SUSPEND and DEV_REVIVE, in which case the revoking happens in pipe.c. This conversion happens in safe_io_conversion() in device.c, called by dev_io and dev_bio. FS has to pre-allocate its own space for these grant tables. This happens in main.c.
2006-06-20 12:12:09 +02:00
Initial revision
2005-04-21 16:53:53 +02:00
/* Structs used in prototypes must be declared as such first. */
struct filp;
New interface between PM and FS.
2006-05-11 16:57:23 +02:00
struct fproc;
Merge of VFS by Balasz Gerofi with Minix trunk.
2006-10-25 15:40:36 +02:00
struct vmnt;
struct vnode;
Initial revision
2005-04-21 16:53:53 +02:00
/* device.c */
_PROTOTYPE( int dev_open, (Dev_t dev, int proc, int flags) );
dev_close needs the filp number for asynch I/O, dev_io gets suspend_reopen flag to suspend a process until the filedescriptor is re-opened. Added dev_reopen, asyn_io, suspended_ep, reopen_reply, asynsend, diag_repl, close_filp, close_reply, unpause, select_reply1, select_reply2.
2008-02-22 15:03:14 +01:00
_PROTOTYPE( int dev_reopen, (Dev_t dev, int filp_no, int flags) );
_PROTOTYPE( int dev_close, (Dev_t dev, int filp_no) );
Initial revision
2005-04-21 16:53:53 +02:00
_PROTOTYPE( int dev_io, (int op, Dev_t dev, int proc, void *buf,
dev_close needs the filp number for asynch I/O, dev_io gets suspend_reopen flag to suspend a process until the filedescriptor is re-opened. Added dev_reopen, asyn_io, suspended_ep, reopen_reply, asynsend, diag_repl, close_filp, close_reply, unpause, select_reply1, select_reply2.
2008-02-22 15:03:14 +01:00
u64_t pos, int bytes, int flags, int suspend_reopen) );
Initial revision
2005-04-21 16:53:53 +02:00
_PROTOTYPE( int gen_opcl, (int op, Dev_t dev, int proc, int flags) );
dmap_io now returns a status. map_driver no longer calls dev_up.
2006-03-15 14:37:20 +01:00
_PROTOTYPE( int gen_io, (int task_nr, message *mess_ptr) );
dev_close needs the filp number for asynch I/O, dev_io gets suspend_reopen flag to suspend a process until the filedescriptor is re-opened. Added dev_reopen, asyn_io, suspended_ep, reopen_reply, asynsend, diag_repl, close_filp, close_reply, unpause, select_reply1, select_reply2.
2008-02-22 15:03:14 +01:00
_PROTOTYPE( int asyn_io, (int task_nr, message *mess_ptr) );
Created new devctl system call to FS. Moved dmap.h header to include/minix/. Various updates to support dynamically starting servers and suppress output.
2005-08-02 17:29:17 +02:00
_PROTOTYPE( int no_dev, (int op, Dev_t dev, int proc, int flags) );
dmap_io now returns a status. map_driver no longer calls dev_up.
2006-03-15 14:37:20 +01:00
_PROTOTYPE( int no_dev_io, (int, message *) );
Initial revision
2005-04-21 16:53:53 +02:00
_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) );
dmap_io now returns a status. map_driver no longer calls dev_up.
2006-03-15 14:37:20 +01:00
_PROTOTYPE( int ctty_io, (int task_nr, message *mess_ptr) );
Initial revision
2005-04-21 16:53:53 +02:00
_PROTOTYPE( int do_ioctl, (void) );
New interface between PM and FS.
2006-05-11 16:57:23 +02:00
_PROTOTYPE( void pm_setsid, (int proc_e) );
Created new devctl system call to FS. Moved dmap.h header to include/minix/. Various updates to support dynamically starting servers and suppress output.
2005-08-02 17:29:17 +02:00
_PROTOTYPE( void dev_status, (message *) );
Two 'dynamic driver' features in FS: . When drivers disappear that have pending select()s, wake up those user processes with EAGAIN so that they can retry their select() and won't hang forever on it. . When drivers re-appear and are mapped into the dmap, run through the list of mounted filesystems and re-dev_open() every one (for partition tables and such). This can't happen before the driver has exec()ced itself, so processes that have fork()ed but not exec()ced yet are marked as DMAP_BABY in the dmap table if they are dmapped before they are execced. If that happens, the above procedure happens after the exec(). If the exec() happens before the dmapping, it (the dev_open()ing) happens right away.
2005-10-20 21:39:32 +02:00
_PROTOTYPE( void dev_up, (int major) );
dev_close needs the filp number for asynch I/O, dev_io gets suspend_reopen flag to suspend a process until the filedescriptor is re-opened. Added dev_reopen, asyn_io, suspended_ep, reopen_reply, asynsend, diag_repl, close_filp, close_reply, unpause, select_reply1, select_reply2.
2008-02-22 15:03:14 +01:00
_PROTOTYPE( endpoint_t suspended_ep, (endpoint_t driver,
cp_grant_id_t g) );
_PROTOTYPE( void reopen_reply, (void) );
Initial revision
2005-04-21 16:53:53 +02:00
/* dmap.c */
New VFS interface
2007-08-07 14:52:47 +02:00
_PROTOTYPE( int do_mapdriver, (void) );
Fix to device table at FS. BIOS and AT installed in /sbin. Floppy boot fixed.
2005-08-05 20:57:20 +02:00
_PROTOTYPE( void build_dmap, (void) );
General cleanup: - clean up kernel section of minix/com.h somewhat - remove ALLOCMEM and VM_ALLOCMEM calls - remove non-safecopy and minix-vmd support from Inet - remove SYS_VIRVCOPY and SYS_PHYSVCOPY calls - remove obsolete segment encoding in SYS_SAFECOPY* - remove DEVCTL call, svrctl(FSDEVUNMAP), map_driverX - remove declarations of unimplemented svrctl requests - remove everything related to swapping to disk - remove floppysetup.sh - remove traces of rescue device - update DESCRIBE.sh with new devices - some other small changes
2010-01-05 20:39:27 +01:00
_PROTOTYPE( int map_driver, (char *label, int major, int proc_nr,
int dev_style, int force) );
Removed dependency of vfs on NR_TASKS macro - all macros in consts.h that depend on NR_TASKS replaced by a FP_BLOCKED_ON_* - fp_suspended removed and replaced by fp_blocked_on. Testing whether a process is supended is qeual to testing whether fp_blocked_on is FP_BLOCKED_ON_NONE or not - fp_task is valid only if fp_blocked_on == FP_BLOCKED_ON_OTHER - no need of special values that do not colide with valid and special endpoints since they are not used as endpoints anymore - suspend only takes FP_BLOCKED_ON_* values not endpoints anymore - suspend(task) replaced by wait_for(task) which sets fp_task so we remember who are we waiting for and suspend sets fp_blocked_on to FP_BLOCKED_ON_OTHER to signal that we are waiting for some other process - some functions should take endpoint_t instead of int, fixed
2009-09-22 23:48:26 +02:00
_PROTOTYPE( int dmap_driver_match, (endpoint_t proc, int major) );
endpoint-aware conversion of servers. 'who', indicating caller number in pm and fs and some other servers, has been removed in favour of 'who_e' (endpoint) and 'who_p' (proc nr.). In both PM and FS, isokendpt() convert endpoints to process slot numbers, returning OK if it was a valid and consistent endpoint number. okendpt() does the same but panic()s if it doesn't succeed. (In PM, this is pm_isok..) pm and fs keep their own records of process endpoints in their proc tables, which are needed to make kernel calls about those processes. message field names have changed. fs drivers are endpoints. fs now doesn't try to get out of driver deadlock, as the protocol isn't supposed to let that happen any more. (A warning is printed if ELOCKED is detected though.) fproc[].fp_task (indicating which driver the process is suspended on) became an int. PM and FS now get endpoint numbers of initial boot processes from the kernel. These happen to be the same as the old proc numbers, to let user processes reach them with the old numbers, but FS and PM don't know that. All new processes after INIT, even after the generation number wraps around, get endpoint numbers with generation 1 and higher, so the first instances of the boot processes are the only processes ever to have endpoint numbers in the old proc number range. More return code checks of sys_* functions have been added. IS has become endpoint-aware. Ditched the 'text' and 'data' fields in the kernel dump (which show locations, not sizes, so aren't terribly useful) in favour of the endpoint number. Proc number is still visible. Some other dumps (e.g. dmap, rs) show endpoint numbers now too which got the formatting changed. PM reading segments using rw_seg() has changed - it uses other fields in the message now instead of encoding the segment and process number and fd in the fd field. For that it uses _read_pm() and _write_pm() which to _taskcall()s directly in pm/misc.c. PM now sys_exit()s itself on panic(), instead of sys_abort(). RS also talks in endpoints instead of process numbers.
2006-03-03 11:20:58 +01:00
_PROTOTYPE( void dmap_unmap_by_endpt, (int proc_nr) );
_PROTOTYPE( void dmap_endpt_up, (int proc_nr) );
Initial revision
2005-04-21 16:53:53 +02:00
New interface between PM and FS.
2006-05-11 16:57:23 +02:00
/* exec.c */
_PROTOTYPE( int pm_exec, (int proc_e, char *path, vir_bytes path_len,
char *frame, vir_bytes frame_len) );
Initial revision
2005-04-21 16:53:53 +02:00
/* filedes.c */
Merge of VFS by Balasz Gerofi with Minix trunk.
2006-10-25 15:40:36 +02:00
_PROTOTYPE( struct filp *find_filp, (struct vnode *vp, mode_t bits) );
_PROTOTYPE( int get_fd, (int start, mode_t bits, int *k,
- Introduce support for sticky bit. - 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.
2009-12-20 21:27:14 +01:00
struct filp **fpt) );
Initial revision
2005-04-21 16:53:53 +02:00
_PROTOTYPE( struct filp *get_filp, (int fild) );
New interface between PM and FS.
2006-05-11 16:57:23 +02:00
_PROTOTYPE( struct filp *get_filp2, (struct fproc *rfp, int fild) );
- Introduce support for sticky bit. - 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.
2009-12-20 21:27:14 +01:00
_PROTOTYPE( int invalidate, (struct filp *) );
Initial revision
2005-04-21 16:53:53 +02:00
Limited support for nested FS->VFS requests during VFS->FS call. - Changed VFS-FS protocol to only store OK or negative error code in m_type field of reply messages. - Changed VFS to treat nonzero positive replies from FS as requests. - Added backwards compatibility to VFS and MFS. No protection of global data structures is provided in VFS, so many VFS calls cannot be made safely by FS servers during many FS calls. Use with caution (or, preferably, not at all).
2009-05-11 12:02:28 +02:00
/* fscall.c */
_PROTOTYPE( void nested_fs_call, (message *m) );
Initial revision
2005-04-21 16:53:53 +02:00
/* link.c */
_PROTOTYPE( int do_link, (void) );
_PROTOTYPE( int do_unlink, (void) );
_PROTOTYPE( int do_rename, (void) );
Implementation of truncate(), ftruncate() and the F_FREESP fcntl(). Implemented by changing write_map to accept a WMAP_FREE flag. In that case, it doesn't update the datablock (creating indirect zones as necessary) pointer, but it frees the datablock if present. Also it frees the single and double indirect blocks if unused. This makes the implementation of truncate_inode() simpler. truncate_inode() now accepts a truncation length which makes implementing truncate() and ftruncate() simple. This also allowed implementing the F_FREESP fcntl().
2006-01-11 18:14:51 +01:00
_PROTOTYPE( int do_truncate, (void) );
_PROTOTYPE( int do_ftruncate, (void) );
- Introduce support for sticky bit. - 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.
2009-12-20 21:27:14 +01:00
_PROTOTYPE( int truncate_vnode, (struct vnode *vp, off_t newsize) );
Initial revision
2005-04-21 16:53:53 +02:00
/* lock.c */
_PROTOTYPE( int lock_op, (struct filp *f, int req) );
_PROTOTYPE( void lock_revive, (void) );
/* main.c */
FS cleanup with gcc.
2005-08-25 14:30:43 +02:00
_PROTOTYPE( int main, (void) );
Initial revision
2005-04-21 16:53:53 +02:00
_PROTOTYPE( void reply, (int whom, int result) );
/* misc.c */
_PROTOTYPE( int do_dup, (void) );
New interface between PM and FS.
2006-05-11 16:57:23 +02:00
_PROTOTYPE( void pm_exit, (int proc) );
Initial revision
2005-04-21 16:53:53 +02:00
_PROTOTYPE( int do_fcntl, (void) );
New interface between PM and FS.
2006-05-11 16:57:23 +02:00
_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) );
- Introduce support for sticky bit. - 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.
2009-12-20 21:27:14 +01:00
_PROTOTYPE( void pm_setgroups, (int proc_e, int ngroups, gid_t *addr) );
Initial revision
2005-04-21 16:53:53 +02:00
_PROTOTYPE( int do_sync, (void) );
Andy's formatting changes.
2005-09-11 18:45:46 +02:00
_PROTOTYPE( int do_fsync, (void) );
New interface between PM and FS.
2006-05-11 16:57:23 +02:00
_PROTOTYPE( void pm_reboot, (void) );
Initial revision
2005-04-21 16:53:53 +02:00
_PROTOTYPE( int do_svrctl, (void) );
_PROTOTYPE( int do_getsysinfo, (void) );
New interface between PM and FS.
2006-05-11 16:57:23 +02:00
_PROTOTYPE( int pm_dumpcore, (int proc_e, struct mem_map *seg_ptr) );
Initial revision
2005-04-21 16:53:53 +02:00
Basic VM and other minor improvements. Not complete, probably not fully debugged or optimized.
2008-11-19 13:26:10 +01:00
/* mmap.c */
_PROTOTYPE( int do_vm_mmap, (void) );
Initial revision
2005-04-21 16:53:53 +02:00
/* mount.c */
Merge of VFS by Balasz Gerofi with Minix trunk.
2006-10-25 15:40:36 +02:00
_PROTOTYPE( int do_fslogin, (void) );
Initial revision
2005-04-21 16:53:53 +02:00
_PROTOTYPE( int do_mount, (void) );
_PROTOTYPE( int do_umount, (void) );
Mount updates: - allow mounting with "none" block device - allow unmounting by mountpoint - make VFS aware of file system process labels - allow m3_ca1 to use the full available message size - use *printf in u/mount(1), as mount(2) uses it already - fix reference leaks for some mount error cases in VFS
2010-01-13 00:08:50 +01:00
_PROTOTYPE( int unmount, (Dev_t dev, char *label) );
Initial revision
2005-04-21 16:53:53 +02:00
/* open.c */
_PROTOTYPE( int do_close, (void) );
New interface between PM and FS.
2006-05-11 16:57:23 +02:00
_PROTOTYPE( int close_fd, (struct fproc *rfp, int fd_nr) );
dev_close needs the filp number for asynch I/O, dev_io gets suspend_reopen flag to suspend a process until the filedescriptor is re-opened. Added dev_reopen, asyn_io, suspended_ep, reopen_reply, asynsend, diag_repl, close_filp, close_reply, unpause, select_reply1, select_reply2.
2008-02-22 15:03:14 +01:00
_PROTOTYPE( void close_filp, (struct filp *fp) );
_PROTOTYPE( void close_reply, (void) );
Initial revision
2005-04-21 16:53:53 +02:00
_PROTOTYPE( int do_creat, (void) );
_PROTOTYPE( int do_lseek, (void) );
First cut at 64-bit file offsets in block devices for mkfs/fsck.
2006-11-27 15:21:43 +01:00
_PROTOTYPE( int do_llseek, (void) );
Initial revision
2005-04-21 16:53:53 +02:00
_PROTOTYPE( int do_mknod, (void) );
_PROTOTYPE( int do_mkdir, (void) );
_PROTOTYPE( int do_open, (void) );
Merge of VFS by Balasz Gerofi with Minix trunk.
2006-10-25 15:40:36 +02:00
_PROTOTYPE( int do_slink, (void) );
Basic VM and other minor improvements. Not complete, probably not fully debugged or optimized.
2008-11-19 13:26:10 +01:00
_PROTOTYPE( int do_vm_open, (void) );
_PROTOTYPE( int do_vm_close, (void) );
Initial revision
2005-04-21 16:53:53 +02:00
/* path.c */
- Introduce support for sticky bit. - 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.
2009-12-20 21:27:14 +01:00
_PROTOTYPE( struct vnode *advance, (struct vnode *dirp, int flags) );
_PROTOTYPE( struct vnode *eat_path, (int flags) );
_PROTOTYPE( struct vnode *last_dir, (void) );
Initial revision
2005-04-21 16:53:53 +02:00
/* pipe.c */
_PROTOTYPE( int do_pipe, (void) );
- Introduce support for sticky bit. - 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.
2009-12-20 21:27:14 +01:00
_PROTOTYPE( int map_vnode, (struct vnode *vp) );
dev_close needs the filp number for asynch I/O, dev_io gets suspend_reopen flag to suspend a process until the filedescriptor is re-opened. Added dev_reopen, asyn_io, suspended_ep, reopen_reply, asynsend, diag_repl, close_filp, close_reply, unpause, select_reply1, select_reply2.
2008-02-22 15:03:14 +01:00
_PROTOTYPE( void unpause, (int proc_nr_e) );
- Introduce support for sticky bit. - 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.
2009-12-20 21:27:14 +01:00
_PROTOTYPE( int pipe_check, (struct vnode *vp, int rw_flag,
New VFS interface
2007-08-07 14:52:47 +02:00
int oflags, int bytes, u64_t position, int notouch) );
Merge of VFS by Balasz Gerofi with Minix trunk.
2006-10-25 15:40:36 +02:00
_PROTOTYPE( void release, (struct vnode *vp, int call_nr, int count) );
Initial revision
2005-04-21 16:53:53 +02:00
_PROTOTYPE( void revive, (int proc_nr, int bytes) );
_PROTOTYPE( void suspend, (int task) );
New VFS interface
2007-08-07 14:52:47 +02:00
_PROTOTYPE( void pipe_suspend, (int rw_flag, int fd_nr, char *buf,
size_t size) );
Andy's formatting changes.
2005-09-11 18:45:46 +02:00
_PROTOTYPE( int select_request_pipe, (struct filp *f, int *ops, int bl) );
Started select() implementation. Added interface to select() for pipes (also named pipes), and select() stubs for regular files. Added timer library in FS that select() is the first customer of. This is unfinished, but committed anyway to get a new release out to Al and testers.
2005-06-17 15:41:12 +02:00
_PROTOTYPE( int select_match_pipe, (struct filp *f) );
Removed dependency of vfs on NR_TASKS macro - all macros in consts.h that depend on NR_TASKS replaced by a FP_BLOCKED_ON_* - fp_suspended removed and replaced by fp_blocked_on. Testing whether a process is supended is qeual to testing whether fp_blocked_on is FP_BLOCKED_ON_NONE or not - fp_task is valid only if fp_blocked_on == FP_BLOCKED_ON_OTHER - no need of special values that do not colide with valid and special endpoints since they are not used as endpoints anymore - suspend only takes FP_BLOCKED_ON_* values not endpoints anymore - suspend(task) replaced by wait_for(task) which sets fp_task so we remember who are we waiting for and suspend sets fp_blocked_on to FP_BLOCKED_ON_OTHER to signal that we are waiting for some other process - some functions should take endpoint_t instead of int, fixed
2009-09-22 23:48:26 +02:00
_PROTOTYPE( void unsuspend_by_endpt, (endpoint_t) );
dev_close needs the filp number for asynch I/O, dev_io gets suspend_reopen flag to suspend a process until the filedescriptor is re-opened. Added dev_reopen, asyn_io, suspended_ep, reopen_reply, asynsend, diag_repl, close_filp, close_reply, unpause, select_reply1, select_reply2.
2008-02-22 15:03:14 +01:00
_PROTOTYPE( void select_reply1, (void) );
_PROTOTYPE( void select_reply2, (void) );
add prototype for wait_for() to fix compiler warning.
2009-10-05 18:43:02 +02:00
_PROTOTYPE( void wait_for, (endpoint_t) );
make unpause() decrease susp_count, as it shouldn't be decreased if the process was REVIVING. (susp_count doesn't count those processes.) this together with dev_io SELECT suspend side effect for asynch. character devices solves the hanging pipe bug. or at last vastly improves it. added sanity checks, turned off by default. made the {NOT_,}{SUSPENDING,REVIVING} constants weirder to help sanity checking.
2009-05-08 15:56:41 +02:00
#if DO_SANITYCHECKS
_PROTOTYPE( int check_pipe, (void) );
#endif
Initial revision
2005-04-21 16:53:53 +02:00
/* protect.c */
_PROTOTYPE( int do_access, (void) );
_PROTOTYPE( int do_chmod, (void) );
_PROTOTYPE( int do_chown, (void) );
_PROTOTYPE( int do_umask, (void) );
- Introduce support for sticky bit. - 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.
2009-12-20 21:27:14 +01:00
_PROTOTYPE( int forbidden, (struct vnode *vp, mode_t access_desired) );
VFS cleanup (mostly open).
2007-01-05 17:36:55 +01:00
_PROTOTYPE( int read_only, (struct vnode *vp) );
Initial revision
2005-04-21 16:53:53 +02:00
/* read.c */
_PROTOTYPE( int do_read, (void) );
Getdents implementation in library/vfs/mfs. Changed readdir, etc. to use getdents
2006-11-09 17:22:54 +01:00
_PROTOTYPE( int do_getdents, (void) );
Initial revision
2005-04-21 16:53:53 +02:00
_PROTOTYPE( int read_write, (int rw_flag) );
New VFS interface
2007-08-07 14:52:47 +02:00
_PROTOTYPE( int rw_pipe, (int rw_flag, endpoint_t usr,
int fd_nr, struct filp *f, char *buf, size_t req_size) );
Merge of VFS by Balasz Gerofi with Minix trunk.
2006-10-25 15:40:36 +02:00
/* request.c */
New VFS interface
2007-08-07 14:52:47 +02:00
_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) );
VFS cleanup (mostly open).
2007-01-05 17:36:55 +01:00
_PROTOTYPE( int req_create, (int fs_e, ino_t inode_nr, int omode,
int uid, int gid, char *path, node_details_t *res) );
New VFS interface
2007-08-07 14:52:47 +02:00
_PROTOTYPE( int req_flush, (endpoint_t fs_e, Dev_t dev) );
REQ_FSTATFS now operates on the root inode (the inode parameter has been removed)
2007-08-17 13:20:59 +02:00
_PROTOTYPE( int req_fstatfs, (int fs_e, int who_e, char *buf) );
New VFS interface
2007-08-07 14:52:47 +02:00
_PROTOTYPE( int req_ftrunc, (endpoint_t fs_e, ino_t inode_nr,
off_t start, off_t end) );
- Introduce support for sticky bit. - 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.
2009-12-20 21:27:14 +01:00
_PROTOTYPE( int req_getdents, (endpoint_t fs_e, ino_t inode_nr, u64_t pos,
char *buf, size_t size, u64_t *new_pos) );
New VFS interface
2007-08-07 14:52:47 +02:00
_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) );
- Introduce support for sticky bit. - 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.
2009-12-20 21:27:14 +01:00
_PROTOTYPE( int req_lookup, (endpoint_t fs_e, ino_t dir_ino, ino_t root_ino,
_mnx_Uid_t uid, _mnx_Gid_t gid, int flags,
lookup_res_t *res) );
New VFS interface
2007-08-07 14:52:47 +02:00
_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,
- Introduce support for sticky bit. - 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.
2009-12-20 21:27:14 +01:00
endpoint_t who_e, char *buf, size_t len) );
New VFS interface
2007-08-07 14:52:47 +02:00
_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,
- Introduce support for sticky bit. - 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.
2009-12-20 21:27:14 +01:00
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) );
New VFS interface
2007-08-07 14:52:47 +02:00
_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) );
Merge of VFS by Balasz Gerofi with Minix trunk.
2006-10-25 15:40:36 +02:00
_PROTOTYPE( int req_sync, (endpoint_t fs_e) );
New VFS interface
2007-08-07 14:52:47 +02:00
_PROTOTYPE( int req_unlink, (endpoint_t fs_e, ino_t inode_nr,
char *lastc) );
Merge of VFS by Balasz Gerofi with Minix trunk.
2006-10-25 15:40:36 +02:00
_PROTOTYPE( int req_unmount, (endpoint_t fs_e) );
New VFS interface
2007-08-07 14:52:47 +02:00
_PROTOTYPE( int req_utime, (endpoint_t fs_e, ino_t inode_nr,
time_t actime, time_t modtime) );
Merge of VFS by Balasz Gerofi with Minix trunk.
2006-10-25 15:40:36 +02:00
_PROTOTYPE( int req_newdriver, (endpoint_t fs_e, Dev_t dev,
endpoint_t driver_e) );
Initial revision
2005-04-21 16:53:53 +02:00
/* stadir.c */
_PROTOTYPE( int do_chdir, (void) );
Added fchdir() system call, with corresponding manpage, Changelog and system include modifications.
2005-06-29 21:28:26 +02:00
_PROTOTYPE( int do_fchdir, (void) );
Initial revision
2005-04-21 16:53:53 +02:00
_PROTOTYPE( int do_chroot, (void) );
_PROTOTYPE( int do_fstat, (void) );
_PROTOTYPE( int do_stat, (void) );
_PROTOTYPE( int do_fstatfs, (void) );
Merge of minix-vmd symlink code. . new_node() now returns inode of parent dir as argument that has to be put_node()d again by the caller of new_node(). it can also return the name of the last component as last_dir() did. . advance() takes a pointer to a pointer of an inode as the parent now. This parent can change, in which case the old one is put_node()d and a new one is put there. . eat_path() replaced by more flexible parse_path() . last_dir() replaced by call to parse_path(). . do_slink(), do_readlink(), do_lstat() and slink_traverse() added. Also added some truncate()/ftruncate()-introduction related changes. (e.g. renamed truncate() to truncate_inode().)
2005-12-20 15:23:44 +01:00
_PROTOTYPE( int do_rdlink, (void) );
_PROTOTYPE( int do_lstat, (void) );
Initial revision
2005-04-21 16:53:53 +02:00
/* time.c */
_PROTOTYPE( int do_utime, (void) );
Moved stime, time, times POSIX calls from FS to PM. Removed child time accounting from kernel (now in PM). Large amount of files in this commit is due to system time problems during development.
2005-05-31 11:50:51 +02:00
Initial revision
2005-04-21 16:53:53 +02:00
/* 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) );
endpoint-aware conversion of servers. 'who', indicating caller number in pm and fs and some other servers, has been removed in favour of 'who_e' (endpoint) and 'who_p' (proc nr.). In both PM and FS, isokendpt() convert endpoints to process slot numbers, returning OK if it was a valid and consistent endpoint number. okendpt() does the same but panic()s if it doesn't succeed. (In PM, this is pm_isok..) pm and fs keep their own records of process endpoints in their proc tables, which are needed to make kernel calls about those processes. message field names have changed. fs drivers are endpoints. fs now doesn't try to get out of driver deadlock, as the protocol isn't supposed to let that happen any more. (A warning is printed if ELOCKED is detected though.) fproc[].fp_task (indicating which driver the process is suspended on) became an int. PM and FS now get endpoint numbers of initial boot processes from the kernel. These happen to be the same as the old proc numbers, to let user processes reach them with the old numbers, but FS and PM don't know that. All new processes after INIT, even after the generation number wraps around, get endpoint numbers with generation 1 and higher, so the first instances of the boot processes are the only processes ever to have endpoint numbers in the old proc number range. More return code checks of sys_* functions have been added. IS has become endpoint-aware. Ditched the 'text' and 'data' fields in the kernel dump (which show locations, not sizes, so aren't terribly useful) in favour of the endpoint number. Proc number is still visible. Some other dumps (e.g. dmap, rs) show endpoint numbers now too which got the formatting changed. PM reading segments using rw_seg() has changed - it uses other fields in the message now instead of encoding the segment and process number and fd in the fd field. For that it uses _read_pm() and _write_pm() which to _taskcall()s directly in pm/misc.c. PM now sys_exit()s itself on panic(), instead of sys_abort(). RS also talks in endpoints instead of process numbers.
2006-03-03 11:20:58 +01:00
_PROTOTYPE( int isokendpt_f, (char *f, int l, int e, int *p, int ft));
Cleaned up src/lib/utils library. Renamed server_ functions to more logical names. All system processes can now either use panic() or report() from libutils, or redefine their own function. Assertions are done via the standard <assert.h> functionality.
2005-06-01 16:31:00 +02:00
_PROTOTYPE( void panic, (char *who, char *mess, int num) );
Initial revision
2005-04-21 16:53:53 +02:00
endpoint-aware conversion of servers. 'who', indicating caller number in pm and fs and some other servers, has been removed in favour of 'who_e' (endpoint) and 'who_p' (proc nr.). In both PM and FS, isokendpt() convert endpoints to process slot numbers, returning OK if it was a valid and consistent endpoint number. okendpt() does the same but panic()s if it doesn't succeed. (In PM, this is pm_isok..) pm and fs keep their own records of process endpoints in their proc tables, which are needed to make kernel calls about those processes. message field names have changed. fs drivers are endpoints. fs now doesn't try to get out of driver deadlock, as the protocol isn't supposed to let that happen any more. (A warning is printed if ELOCKED is detected though.) fproc[].fp_task (indicating which driver the process is suspended on) became an int. PM and FS now get endpoint numbers of initial boot processes from the kernel. These happen to be the same as the old proc numbers, to let user processes reach them with the old numbers, but FS and PM don't know that. All new processes after INIT, even after the generation number wraps around, get endpoint numbers with generation 1 and higher, so the first instances of the boot processes are the only processes ever to have endpoint numbers in the old proc number range. More return code checks of sys_* functions have been added. IS has become endpoint-aware. Ditched the 'text' and 'data' fields in the kernel dump (which show locations, not sizes, so aren't terribly useful) in favour of the endpoint number. Proc number is still visible. Some other dumps (e.g. dmap, rs) show endpoint numbers now too which got the formatting changed. PM reading segments using rw_seg() has changed - it uses other fields in the message now instead of encoding the segment and process number and fd in the fd field. For that it uses _read_pm() and _write_pm() which to _taskcall()s directly in pm/misc.c. PM now sys_exit()s itself on panic(), instead of sys_abort(). RS also talks in endpoints instead of process numbers.
2006-03-03 11:20:58 +01:00
#define okendpt(e, p) isokendpt_f(__FILE__, __LINE__, (e), (p), 1)
#define isokendpt(e, p) isokendpt_f(__FILE__, __LINE__, (e), (p), 0)
Merge of VFS by Balasz Gerofi with Minix trunk.
2006-10-25 15:40:36 +02:00
/* vmnt.c */
_PROTOTYPE( struct vmnt *get_free_vmnt, (short *index) );
_PROTOTYPE( struct vmnt *find_vmnt, (int fs_e) );
/* vnode.c */
- Introduce support for sticky bit. - 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.
2009-12-20 21:27:14 +01:00
_PROTOTYPE( struct vnode *get_free_vnode, (void) );
Merge of VFS by Balasz Gerofi with Minix trunk.
2006-10-25 15:40:36 +02:00
_PROTOTYPE( struct vnode *find_vnode, (int fs_e, int numb) );
_PROTOTYPE( void dup_vnode, (struct vnode *vp) );
_PROTOTYPE( void put_vnode, (struct vnode *vp) );
VFS cleanup (mostly open).
2007-01-05 17:36:55 +01:00
_PROTOTYPE( void vnode_clean_refs, (struct vnode *vp) );
make unpause() decrease susp_count, as it shouldn't be decreased if the process was REVIVING. (susp_count doesn't count those processes.) this together with dev_io SELECT suspend side effect for asynch. character devices solves the hanging pipe bug. or at last vastly improves it. added sanity checks, turned off by default. made the {NOT_,}{SUSPENDING,REVIVING} constants weirder to help sanity checking.
2009-05-08 15:56:41 +02:00
#if DO_SANITYCHECKS
mostly harmless sanity checks.
2009-01-20 14:43:00 +01:00
_PROTOTYPE( int check_vrefs, (void) );
make unpause() decrease susp_count, as it shouldn't be decreased if the process was REVIVING. (susp_count doesn't count those processes.) this together with dev_io SELECT suspend side effect for asynch. character devices solves the hanging pipe bug. or at last vastly improves it. added sanity checks, turned off by default. made the {NOT_,}{SUSPENDING,REVIVING} constants weirder to help sanity checking.
2009-05-08 15:56:41 +02:00
#endif
Merge of VFS by Balasz Gerofi with Minix trunk.
2006-10-25 15:40:36 +02:00
Initial revision
2005-04-21 16:53:53 +02:00
/* write.c */
_PROTOTYPE( int do_write, (void) );
small compile fixes; initial select() stubs; release.sh script doesn't need /tmp any more since 16MB root device; increase to 3.0.5 to make new CD with working FXP driver. (not tagged 3.0.5 yet as at driver bios-copy workaround hasn't been done.)
2005-06-06 13:40:32 +02:00
/* select.c */
_PROTOTYPE( int do_select, (void) );
Started select() implementation. Added interface to select() for pipes (also named pipes), and select() stubs for regular files. Added timer library in FS that select() is the first customer of. This is unfinished, but committed anyway to get a new release out to Al and testers.
2005-06-17 15:41:12 +02:00
_PROTOTYPE( int select_callback, (struct filp *, int ops) );
_PROTOTYPE( void select_forget, (int fproc) );
_PROTOTYPE( void select_timeout_check, (timer_t *) );
. added cd-probe logic; tries to find the right root filesystem if the boot monitor parameter is set. it also sets a boot monitor parameter (by talking to the PM) so userland knows it. . ramdisk copy code made slightly smarter . various select() prettifications (work in progress)
2005-07-22 20:28:32 +02:00
_PROTOTYPE( void init_select, (void) );
Removed dependency of vfs on NR_TASKS macro - all macros in consts.h that depend on NR_TASKS replaced by a FP_BLOCKED_ON_* - fp_suspended removed and replaced by fp_blocked_on. Testing whether a process is supended is qeual to testing whether fp_blocked_on is FP_BLOCKED_ON_NONE or not - fp_task is valid only if fp_blocked_on == FP_BLOCKED_ON_OTHER - no need of special values that do not colide with valid and special endpoints since they are not used as endpoints anymore - suspend only takes FP_BLOCKED_ON_* values not endpoints anymore - suspend(task) replaced by wait_for(task) which sets fp_task so we remember who are we waiting for and suspend sets fp_blocked_on to FP_BLOCKED_ON_OTHER to signal that we are waiting for some other process - some functions should take endpoint_t instead of int, fixed
2009-09-22 23:48:26 +02:00
_PROTOTYPE( void select_unsuspend_by_endpt, (endpoint_t proc) );
Andy's formatting changes.
2005-09-11 18:45:46 +02:00
_PROTOTYPE( int select_notified, (int major, int minor, int ops) );
Started select() implementation. Added interface to select() for pipes (also named pipes), and select() stubs for regular files. Added timer library in FS that select() is the first customer of. This is unfinished, but committed anyway to get a new release out to Al and testers.
2005-06-17 15:41:12 +02:00
/* timers.c */
Merge of VFS by Balasz Gerofi with Minix trunk.
2006-10-25 15:40:36 +02:00
_PROTOTYPE( void fs_set_timer, (timer_t *tp, int delta,
tmr_func_t watchdog, int arg) );
Created new devctl system call to FS. Moved dmap.h header to include/minix/. Various updates to support dynamically starting servers and suppress output.
2005-08-02 17:29:17 +02:00
_PROTOTYPE( void fs_expire_timers, (clock_t now) );
_PROTOTYPE( void fs_cancel_timer, (timer_t *tp) );
_PROTOTYPE( void fs_init_timer, (timer_t *tp) );
Merge of VFS by Balasz Gerofi with Minix trunk.
2006-10-25 15:40:36 +02:00
Mostly bugfixes of bugs triggered by the test set. bugfixes: SYSTEM: . removed rc->p_priv->s_flags = 0; for the priv struct shared by all user processes in get_priv(). this should only be done once. doing a SYS_PRIV_USER in sys_privctl() caused the flags of all user processes to be reset, so they were no longer PREEMPTIBLE. this happened when RS executed a policy script. (this broke test1 in the test set) VFS/MFS: . chown can change the mode of a file, and chmod arguments are only part of the full file mode so the full filemode is slightly magic. changed these calls so that the final modes are returned to VFS, so that the vnode can be kept up-to-date. (this broke test11 in the test set) MFS: . lookup() checked for sizeof(string) instead of sizeof(user_path), truncating long path names (caught by test 23) . truncate functions neglected to update ctime (this broke test16) VFS: . corner case of an empty filename lookup caused fields of a request not to be filled in in the lookup functions, not making it clear that the lookup had failed, causing messages to garbage processes, causing strange failures. (caught by test 30) . trust v_size in vnode when doing reads or writes on non-special files, truncating i/o where necessary; this is necessary for pipes, as MFS can't tell when a pipe has been truncated without it being told explicitly each time. when the last reader/writer on a pipe closes, tell FS about the new size using truncate_vn(). (this broke test 25, among others) . permission check for chdir() had disappeared; added a forbidden() call (caught by test 23) new code, shouldn't change anything: . introduced RTS_SET, RTS_UNSET, and RTS_ISSET macro's, and their LOCK variants. These macros set and clear the p_rts_flags field, causing a lot of duplicated logic like old_flags = rp->p_rts_flags; /* save value of the flags */ rp->p_rts_flags &= ~NO_PRIV; if (old_flags != 0 && rp->p_rts_flags == 0) lock_enqueue(rp); to change into the simpler RTS_LOCK_UNSET(rp, NO_PRIV); so the macros take care of calling dequeue() and enqueue() (or lock_*()), as the case may be). This makes the code a bit more readable and a bit less fragile. . removed return code from do_clocktick in CLOCK as it currently never replies . removed some debug code from VFS . fixed grant debug message in device.c preemptive checks, tests, changes: . added return code checks of receive() to SYSTEM and CLOCK . O_TRUNC should never arrive at MFS (added sanity check and removed O_TRUNC code) . user_path declared with PATH_MAX+1 to let it be null-terminated . checks in MFS to see if strings passed by VFS are null-terminated IS: . static irq name table thrown out
2007-02-01 18:50:02 +01:00
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