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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"
Driver mapping refactory. VFS CHANGES: - dmap table no longer statically initialized in VFS - Dropped FSSIGNON svrctl call no longer used by INET INET CHANGES: - INET announces its presence to VFS just like any other driver RS CHANGES: - The boot image dev table contains all the data to initialize VFS' dmap table - RS interface supports asynchronous up and update operations now - RS interface extended to support driver style and flags
2010-04-09 23:56:44 +02:00
#include <minix/rs.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
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 15:44:07 +02:00
typedef struct filp * filp_id_t;
Initial revision
2005-04-21 16:53:53 +02:00
/* device.c */
Remove the types Dev_t, _mnx_Gui, _mnx_Uid, and similar. Use ANSI-style function declarations where necessary.
2010-04-13 12:58:41 +02:00
_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,
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) );
Remove the types Dev_t, _mnx_Gui, _mnx_Uid, and similar. Use ANSI-style function declarations where necessary.
2010-04-13 12:58:41 +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) );
Remove the types Dev_t, _mnx_Gui, _mnx_Uid, and similar. Use ANSI-style function declarations where necessary.
2010-04-13 12:58:41 +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 *) );
Remove the types Dev_t, _mnx_Gui, _mnx_Uid, and similar. Use ANSI-style function declarations where necessary.
2010-04-13 12:58:41 +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 */
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) );
Clean up and fix multiple bugs in select: - Remove redundant code. - Always wait for the initial reply from an asynchronous select request, even if the select has been satisfied on another file descriptor or was canceled due to a serious error. - Restart asynchronous selects if upon reply from the driver turns out that there are deferred operations (and do not forget we're still interested in the results of the deferred operations). - Do not hang a non-blocking select when another blocking select on the same filp is still blocking. - Split blocking operations in read, write, and exceptions (i.e., blocking on read does not imply the write will block as well). - Some loops would iterate over OPEN_MAX file descriptors instead of the "highest" file descriptor. - Use proper internal error return values. - A secondary reply from a synchronous driver is essentially the same as from an asynchronous driver (the only difference being how the answer is received). Merge. - Return proper error code after a driver failure. - Auto-detect whether a driver is synchronous or asynchronous. - Remove some code duplication. - Clean up code (coding style, add missing comments, put all select related code together).
2011-04-13 15:25:34 +02:00
_PROTOTYPE( int do_mapdriver, (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( 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_endpt_up, (int proc_nr) );
Clean up and fix multiple bugs in select: - Remove redundant code. - Always wait for the initial reply from an asynchronous select request, even if the select has been satisfied on another file descriptor or was canceled due to a serious error. - Restart asynchronous selects if upon reply from the driver turns out that there are deferred operations (and do not forget we're still interested in the results of the deferred operations). - Do not hang a non-blocking select when another blocking select on the same filp is still blocking. - Split blocking operations in read, write, and exceptions (i.e., blocking on read does not imply the write will block as well). - Some loops would iterate over OPEN_MAX file descriptors instead of the "highest" file descriptor. - Use proper internal error return values. - A secondary reply from a synchronous driver is essentially the same as from an asynchronous driver (the only difference being how the answer is received). Merge. - Return proper error code after a driver failure. - Auto-detect whether a driver is synchronous or asynchronous. - Remove some code duplication. - Clean up code (coding style, add missing comments, put all select related code together).
2011-04-13 15:25:34 +02:00
_PROTOTYPE( void dmap_unmap_by_endpt, (int proc_nr) );
_PROTOTYPE( struct dmap *get_dmap, (endpoint_t proc_e) );
_PROTOTYPE( int map_driver, (const char *label, int major, endpoint_t proc_nr,
int dev_style, int flags) );
_PROTOTYPE( int map_service, (struct rprocpub *rpub) );
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,
Make exec() use entry point in a.out header
2010-06-10 16:59:10 +02:00
char *frame, vir_bytes frame_len, vir_bytes *pc));
New interface between PM and FS.
2006-05-11 16:57:23 +02:00
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 *) );
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 15:44:07 +02:00
_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) );
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) );
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 15:44:07 +02:00
_PROTOTYPE( void nested_dev_call, (message *m) );
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
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) );
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 15:44:07 +02:00
_PROTOTYPE( int truncate_vnode, (struct vnode *vp, off_t newsize) );
_PROTOTYPE( int rdlink_direct, (char *orig_path, char *link_path,
struct fproc *rfp) );
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) );
Driver refactory for live update and crash recovery. SYSLIB CHANGES: - DS calls to publish / retrieve labels consider endpoints instead of u32_t. VFS CHANGES: - mapdriver() only adds an entry in the dmap table in VFS. - dev_up() is only executed upon reception of a driver up event. INET CHANGES: - INET no longer searches for existing drivers instances at startup. - A newtwork driver is (re)initialized upon reception of a driver up event. - Networking startup is now race-free by design. No need to waste 5 seconds at startup any more. DRIVER CHANGES: - Every driver publishes driver up events when starting for the first time or in case of restart when recovery actions must be taken in the upper layers. - Driver up events are published by drivers through DS. - For regular drivers, VFS is normally the only subscriber, but not necessarily. For instance, when the filter driver is in use, it must subscribe to driver up events to initiate recovery. - For network drivers, inet is the only subscriber for now. - Every VFS driver is statically linked with libdriver, every network driver is statically linked with libnetdriver. DRIVER LIBRARIES CHANGES: - Libdriver is extended to provide generic receive() and ds_publish() interfaces for VFS drivers. - driver_receive() is a wrapper for sef_receive() also used in driver_task() to discard spurious messages that were meant to be delivered to a previous version of the driver. - driver_receive_mq() is the same as driver_receive() but integrates support for queued messages. - driver_announce() publishes a driver up event for VFS drivers and marks the driver as initialized and expecting a DEV_OPEN message. - Libnetdriver is introduced to provide similar receive() and ds_publish() interfaces for network drivers (netdriver_announce() and netdriver_receive()). - Network drivers all support live update with no state transfer now. KERNEL CHANGES: - Added kernel call statectl for state management. Used by driver_announce() to unblock eventual callers sendrecing to the driver.
2010-04-08 15:41:35 +02:00
_PROTOTYPE( void ds_event, (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) );
Remove the types Dev_t, _mnx_Gui, _mnx_Uid, and similar. Use ANSI-style function declarations where necessary.
2010-04-13 12:58:41 +02:00
_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_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 */
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 15:44:07 +02:00
_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) );
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) );
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) );
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,
Remove the types Dev_t, _mnx_Gui, _mnx_Uid, and similar. Use ANSI-style function declarations where necessary.
2010-04-13 12:58:41 +02:00
dev_t dev, u64_t pos, unsigned int num_of_bytes,
New VFS interface
2007-08-07 14:52:47 +02:00
char *user_addr, int rw_flag,
u64_t *new_posp, unsigned int *cum_iop) );
Remove the types Dev_t, _mnx_Gui, _mnx_Uid, and similar. Use ANSI-style function declarations where necessary.
2010-04-13 12:58:41 +02:00
_PROTOTYPE( int req_chmod, (int fs_e, ino_t inode_nr, mode_t rmode,
New VFS interface
2007-08-07 14:52:47 +02:00
mode_t *new_modep) );
_PROTOTYPE( int req_chown, (endpoint_t fs_e, ino_t inode_nr,
Remove the types Dev_t, _mnx_Gui, _mnx_Uid, and similar. Use ANSI-style function declarations where necessary.
2010-04-13 12:58:41 +02:00
uid_t newuid, 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,
Remove the types Dev_t, _mnx_Gui, _mnx_Uid, and similar. Use ANSI-style function declarations where necessary.
2010-04-13 12:58:41 +02:00
uid_t uid, gid_t gid, char *path, node_details_t *res) );
_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) );
include, vfs: statvfs, fstatvfs calls, contributed by Buccapatnam Tirumala, Gautam.
2010-06-24 01:53:50 +02:00
_PROTOTYPE( int req_statvfs, (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) );
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 15:44:07 +02:00
_PROTOTYPE( int req_getdents, (endpoint_t fs_e, ino_t inode_nr,
u64_t pos, char *buf, size_t size,
u64_t *new_pos, int direct) );
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,
Remove the types Dev_t, _mnx_Gui, _mnx_Uid, and similar. Use ANSI-style function declarations where necessary.
2010-04-13 12:58:41 +02:00
uid_t uid, gid_t gid, int flags,
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 15:44:07 +02:00
lookup_res_t *res, struct fproc *rfp) );
New VFS interface
2007-08-07 14:52:47 +02:00
_PROTOTYPE( int req_mkdir, (endpoint_t fs_e, ino_t inode_nr,
Remove the types Dev_t, _mnx_Gui, _mnx_Uid, and similar. Use ANSI-style function declarations where necessary.
2010-04-13 12:58:41 +02:00
char *lastc, uid_t uid, gid_t gid, mode_t dmode) );
New VFS interface
2007-08-07 14:52:47 +02:00
_PROTOTYPE( int req_mknod, (endpoint_t fs_e, ino_t inode_nr,
Remove the types Dev_t, _mnx_Gui, _mnx_Uid, and similar. Use ANSI-style function declarations where necessary.
2010-04-13 12:58:41 +02:00
char *lastc, uid_t uid, gid_t gid,
mode_t dmode, dev_t dev) );
New VFS interface
2007-08-07 14:52:47 +02:00
_PROTOTYPE( int req_mountpoint, (endpoint_t fs_e, ino_t inode_nr) );
Remove the types Dev_t, _mnx_Gui, _mnx_Uid, and similar. Use ANSI-style function declarations where necessary.
2010-04-13 12:58:41 +02:00
_PROTOTYPE( int req_newnode, (endpoint_t fs_e, uid_t uid,
gid_t gid, mode_t dmode,
dev_t dev, struct node_details *res) );
New VFS interface
2007-08-07 14:52:47 +02:00
_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,
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 15:44:07 +02:00
endpoint_t who_e, char *buf, size_t len,
int direct) );
New VFS interface
2007-08-07 14:52:47 +02:00
_PROTOTYPE( int req_readsuper, (endpoint_t fs_e, char *driver_name,
Remove the types Dev_t, _mnx_Gui, _mnx_Uid, and similar. Use ANSI-style function declarations where necessary.
2010-04-13 12:58:41 +02:00
dev_t dev, int readonly, int isroot,
New VFS interface
2007-08-07 14:52:47 +02:00
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,
Remove the types Dev_t, _mnx_Gui, _mnx_Uid, and similar. Use ANSI-style function declarations where necessary.
2010-04-13 12:58:41 +02:00
unsigned short path_length, uid_t uid, gid_t gid) );
New VFS interface
2007-08-07 14:52:47 +02:00
_PROTOTYPE( int req_stat, (int fs_e, ino_t inode_nr, int who_e,
New stat structure. * VFS and installed MFSes must be in sync before and after this change * Use struct stat from NetBSD. It requires adding new STAT, FSTAT and LSTAT syscalls. Libc modification is both backward and forward compatible. Also new struct stat uses modern field sizes to avoid ABI incompatibility, when we update uid_t, gid_t and company. Exceptions are ino_t and off_t in old libc (though paddings added).
2011-07-01 21:35:54 +02:00
char *buf, int pos, int stat_version) );
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) );
Remove the types Dev_t, _mnx_Gui, _mnx_Uid, and similar. Use ANSI-style function declarations where necessary.
2010-04-13 12:58:41 +02:00
_PROTOTYPE( int req_newdriver, (endpoint_t fs_e, dev_t dev,
Merge of VFS by Balasz Gerofi with Minix trunk.
2006-10-25 15:40:36 +02:00
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) );
include, vfs: statvfs, fstatvfs calls, contributed by Buccapatnam Tirumala, Gautam.
2010-06-24 01:53:50 +02:00
_PROTOTYPE( int do_statvfs, (void) );
_PROTOTYPE( int do_fstatvfs, (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) );
More endpoint_t correctness. More const correctness. Other code cleanup.
2010-06-08 16:09:18 +02:00
_PROTOTYPE( int isokendpt_f, (char *f, int l, endpoint_t e, int *p, int ft));
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 15:44:07 +02:00
_PROTOTYPE( int in_group, (struct fproc *rfp, gid_t grp) );
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
gcov support, based on work contributed by Anton Kuijsten.
2010-08-25 15:06:43 +02:00
/* gcov.c */
_PROTOTYPE( int do_gcov_flush, (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) );
. 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) );
Clean up and fix multiple bugs in select: - Remove redundant code. - Always wait for the initial reply from an asynchronous select request, even if the select has been satisfied on another file descriptor or was canceled due to a serious error. - Restart asynchronous selects if upon reply from the driver turns out that there are deferred operations (and do not forget we're still interested in the results of the deferred operations). - Do not hang a non-blocking select when another blocking select on the same filp is still blocking. - Split blocking operations in read, write, and exceptions (i.e., blocking on read does not imply the write will block as well). - Some loops would iterate over OPEN_MAX file descriptors instead of the "highest" file descriptor. - Use proper internal error return values. - A secondary reply from a synchronous driver is essentially the same as from an asynchronous driver (the only difference being how the answer is received). Merge. - Return proper error code after a driver failure. - Auto-detect whether a driver is synchronous or asynchronous. - Remove some code duplication. - Clean up code (coding style, add missing comments, put all select related code together).
2011-04-13 15:25:34 +02:00
_PROTOTYPE( void select_callback, (struct filp *, int ops) );
_PROTOTYPE( void select_forget, (endpoint_t proc_e) );
_PROTOTYPE( void select_reply1, (endpoint_t driver_e, int minor, int status));
_PROTOTYPE( void select_reply2, (endpoint_t driver_e, int minor, int status));
_PROTOTYPE( void select_timeout_check, (timer_t *) );
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) );
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