| Age | Commit message (Collapse) | Author |
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* trans/mtab.c (struct mtab): Add a hash table to keep track of seen
ports.
(mtab_mark_as_seen): New function that records the identity port of a
given node in the hash table and reports whether it has been there
before.
(mtab_populate): Use the new function to avoid running in circles.
(main, open_hook): Initialize hash table.
(close_hook): Free ports and destroy hash table.
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* trans/mtab.c (main): Use setnullauth to drop privileges.
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* trans/mtab.c (main): Fix initialization of mtab in one-shot mode.
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This enables the compiler to check that the server function
declarations match MIGs expectations. Fix a few oddities along the
way.
* console-client/trans.c: Include MIG-generated server header file(s).
* console/console.c: Likewise. Also, fix declarations.
* console/mutations.h (TIOCTL_IMPORTS): Just use libnetfs/priv.h.
* console/priv.h: Delete now unused file.
* ext2fs/storeinfo.c: Include MIG-generated server header file(s).
* fatfs/inode.c: Likewise.
* fatfs/main.c: Likewise. Also, fix declaration.
* isofs/inode.c: Likewise.
* libdiskfs/boot-start.c: Likewise.
* libdiskfs/file-chg.c: Include the correct MIG-generated server header file.
* libdiskfs/file-chmod.c: Include MIG-generated server header file(s).
* libdiskfs/file-get-fs-opts.c: Likewise.
* libdiskfs/init-startup.c: Likewise.
* libnetfs/file-get-children.c: Likewise.
* libnetfs/file-getcontrol.c: Include the correct MIG-generated server
header file.
* libnetfs/file-set-translator.c: Include MIG-generated server header file(s).
* libnetfs/fsstubs.c: Likewise.
* libtrivfs/file-access.c: Likewise.
* libtrivfs/file-chauthor.c: Likewise.
* libtrivfs/file-chflags.c: Likewise.
* libtrivfs/file-chg.c: Likewise.
* libtrivfs/file-chmod.c: Likewise.
* libtrivfs/file-chown.c: Likewise.
* libtrivfs/file-exec.c: Likewise.
* libtrivfs/file-get-children.c: Likewise.
* libtrivfs/file-get-fs-options.c: Likewise.
* libtrivfs/file-get-source.c: Likewise.
* libtrivfs/file-get-storage-info.c: Likewise.
* libtrivfs/file-get-trans.c: Likewise.
* libtrivfs/file-get-transcntl.c: Likewise.
* libtrivfs/file-getcontrol.c: Likewise.
* libtrivfs/file-getfh.c: Likewise.
* libtrivfs/file-getlinknode.c: Likewise.
* libtrivfs/file-lock.c: Likewise.
* libtrivfs/file-reparent.c: Likewise.
* libtrivfs/file-set-size.c: Likewise.
* libtrivfs/file-set-trans.c: Likewise.
* libtrivfs/file-statfs.c: Likewise.
* libtrivfs/file-sync.c: Likewise.
* libtrivfs/file-syncfs.c: Likewise.
* libtrivfs/file-utimes.c: Likewise.
* libtrivfs/fsys-forward.c: Likewise.
* libtrivfs/fsys-get-options.c: Likewise.
* libtrivfs/fsys-getroot.c: Likewise.
* libtrivfs/fsys-goaway.c: Likewise.
* libtrivfs/fsys-set-options.c: Likewise.
* libtrivfs/fsys-stubs.c: Likewise.
* libtrivfs/fsys-syncfs.c: Likewise.
* libtrivfs/io-async-icky.c: Likewise.
* libtrivfs/io-async.c: Likewise.
* libtrivfs/io-duplicate.c: Likewise.
* libtrivfs/io-identity.c: Likewise.
* libtrivfs/io-map.c: Likewise.
* libtrivfs/io-modes-get.c: Likewise.
* libtrivfs/io-modes-off.c: Likewise.
* libtrivfs/io-modes-on.c: Likewise.
* libtrivfs/io-modes-set.c: Likewise.
* libtrivfs/io-owner-get.c: Likewise.
* libtrivfs/io-owner-mod.c: Likewise.
* libtrivfs/io-pathconf.c: Likewise.
* libtrivfs/io-read.c: Likewise.
* libtrivfs/io-readable.c: Likewise.
* libtrivfs/io-reauthenticate.c: Likewise.
* libtrivfs/io-restrict-auth.c: Likewise.
* libtrivfs/io-revoke.c: Likewise.
* libtrivfs/io-seek.c: Likewise.
* libtrivfs/io-select.c: Likewise.
* libtrivfs/io-stat.c: Likewise.
* libtrivfs/io-stubs.c: Likewise.
* libtrivfs/io-version.c: Likewise.
* libtrivfs/io-write.c: Likewise.
* pfinet/tunnel.c: Likewise.
* storeio/io.c: Likewise.
* storeio/storeio.c: Likewise.
* term/users.c: Likewise.
* tmpfs/node.c: Likewise.
* trans/fakeroot.c: Likewise. Also, include all server headers that provide
the X_server_routine functions...
(netfs_demuxer): ... that were previously declared here.
* trans/fifo.c: Include MIG-generated server header file(s).
* trans/firmlink.c: Likewise.
* trans/hello-mt.c: Likewise.
* trans/hello.c: Likewise.
* trans/magic.c: Likewise.
* trans/mtab.c: Likewise.
* trans/new-fifo.c: Likewise.
* trans/null.c: Likewise.
* trans/proxy-defpager.c: Likewise.
* trans/streamio.c: Likewise.
* libdiskfs/fsmutations.h: Qualify the import with the libraries path.
Without this change, out-of-tree builds would no longer work.
* libnetfs/mutations.h: Likewise.
* libtrivfs/mig-mutate.h: Likewise.
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Previously, map_device_to_path mapped unknown device strings to
"none". Return a copy of the original source string instead so that
e.g. nfs mount point points are properly handled.
* trans/mtab.c (map_device_to_path): Do not map unknown source strings
to "none".
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Previously, the mtab translator would guess the source of a filesystem
translator from its last argument. This made all kinds of
non-filesystem translators appear in /proc/mounts, causing severe
problems due to umount --all removing vital passive translator
records.
Fix this by ignoring all translators that do not explicitly implement
file_get_source.
* trans/mtab.c (mtab_populate): Ignore translators that do not
implement file_get_source.
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* hurd/fs.defs: Add file_get_children and file_get_source.
* hurd/fsys.defs: Remove fsys_get_children and fsys_get_source.
* libdiskfs/fsys-get-children.c: Rename and adapt accordingly.
* libdiskfs/fsys-get-source.c: Likewise.
* libnetfs/fsys-get-children.c: Likewise.
* libnetfs/fsys-get-source.c: Likewise.
* libtrivfs/fsys-get-children.c: Likewise.
* libtrivfs/fsys-get-source.c: Likewise.
* libdiskfs/diskfs.h: Adapt prototype and comment.
* libnetfs/netfs.h: Likewise.
* libtrivfs/trivfs.h: Likewise.
* libdiskfs/get-source.c: Adapt default implementation, provide
diskfs_disk_name by default.
* libnetfs/netfs.h: Adapt default implementation.
* libtrivfs/get-source.c: Likewise.
* libdiskfs/Makefile: Adapt accordingly.
* libnetfs/Makefile: Likewise.
* libtrivfs/Makefile: Likewise.
* trans/symlink.c: Likewise.
* trans/mtab.c: Likewise.
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Traditionally, /proc/mounts includes only filesystem mount points.
Previously though, the mtab translator included any kind of
translator, like all /hurd/storeio translators. This causes problems
with umount --all as this would remove the passive translator records
from nodes in /dev.
Fix this by only listing filesystem-like translators by default.
Filesystem-like translators are identified by their response to
dir_readdir messages sent to their root node.
* trans/mtab.c (all_translators): New variable.
(options): Add flag to preserve the old behavior.
(parse_opt): Handle the new flag.
(is_filesystem_translator): New function.
(mtab_populate): Skip non-filesystem translators by default.
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* trans/mtab.c (main): Use ports_manage_port_operations_multithread.
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* trans/mtab.c (struct mtab): Add lock.
(open_hook): Initialize lock.
(close_hook): Destroy lock.
(trivfs_S_io_read): Lock mtab object, adjust error handling accordingly.
(trivfs_S_io_seek): Likewise.
(trivfs_S_io_readable): Likewise.
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Previously the mtab detector tried to detect whether it talks to
itself by comparing the control port of the translator it currently
visits with its own. This was done to prevent deadlocks. However, this
did not detect non-trivial loops, i.e. two mtab translators would
still dead-lock each other.
Now that it is safe to actually file_name_lookup the root node of a
mtab translator without triggering the generation of content, this
logic can just be omitted.
* trans/mtab.c (mtab_populate): Remove the loop detection logic.
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Previously the mtab content was generated in the open hook. Delay this
until the data is needed. A follow up patch will take advantage of
this to both simplify the logic in mtab_populate and make it more
robust at the same time.
* trans/mtab.c (open_hook): Do not eagerly populate the mtab.
(trivfs_S_io_read): Populate the mtab struct on demand.
(trivfs_S_io_seek): Likewise.
(trivfs_S_io_readable): Likewise.
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Rename the global variable "path" to "target_path" to make it more
unambiguous.
* trans/mtab.c: Rename global variable "path".
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The mtab translator provides an mtab file that is dynamically created
on demand. It is populated with information about active translators
bound below the given path that is accumulated by traversing the
translator tree. It can also be invoked as normal program that prints
the requested information to stdout.
* trans/mtab.c: New file.
* trans/Makefile: Build mtab.
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