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2016-10-05trans/crash: Fix setting core file template at runtime.Justus Winter
* trans/crash.c (corefile_template_lock): New variable. (S_crash_dump_task): Serialize access to 'corefile_template'. (parse_opt): Likewise. Also strdup the template. (trivfs_append_args): Serialize access to 'corefile_template'.
2016-10-05trans/crash: Use empty core file templates to disable the feature.Justus Winter
* trans/crash.c (parse_opt): Use empty core file templates to disable the feature.
2016-10-05Avoid fatal error handling in option parsers.Justus Winter
* trans/crash.c (parse_opt): Avoid 'error' in favor of the appropriate argp error reporting mechanism. * trans/remap.c (parse_opt): Likewise. * utils/msgids.c (parse_opt): Likewise.
2016-08-28typoSamuel Thibault
2016-08-28remap: Refuse non-absolute pathsSamuel Thibault
* trans/remap.c (parse_opt): Error out if some path is not absolute.
2016-08-09trans/crash: core file name templatesJustus Winter
Add an option to specify a template used to construct core file names. This way core files can be collected at a predictable central location. * hurd/crash.defs (crash_dump_task): Return EEXIST if the core file has been written elsewhere. * trans/crash.c (corefile_template): New variable. (template_valid): New function. (template_make_file_name): Likewise. (S_crash_dump_task): Use the template to construct a name, open the file, and write the core dump there instead of the handle provided by the caller. (argp_option): New option. (doc): Document the format. (parse_opt): Handle new option (trivfs_append_args): Likewise.
2016-06-07trans/crash: fix blunderJustus Winter
* trans/crash.c (S_crash_dump_task): Fix error handling.
2016-06-04Do not make io_select return errors on unsupported READ/WRITE modeSamuel Thibault
The descriptor is valid, it is just the mode which is not available. * console-client/kbd-repeat.c (repeater_select): Drop SELECT_URG flag from `type'. Return 0 instead of EINVAL if `type' contains SELECT_WRITE. * console-client/pc-mouse (repeater_select): Likewise. * trans/mtab.c (trivfs_S_io_select): Return 0 instead of EBADF when the openmodes do not match the requested modes in `type'. * trans/new-fifo.c (io_select_common): Likewise. * trans/fifo.c (io_select_common): Likewise. * trans/null.c (trivfs_S_io_select): Likewise. * trans/streamio.c (io_select_common): Likewise.
2016-06-04trans/crash: fix resource leaksJustus Winter
Previously, 'task', 'core_file', and 'ctty_id' were not deallocated if crash was configured to write core files, and 'ctty_id' was leaked if the crashing task was suspended. This lead to resources not being released in the kernel, the filesystem, and the terminal subsystem, and could very well be responsible for making the Debian/Hurd shutdown hang. * trans/crash.c (S_crash_dump_task): Properly deallocate 'task', 'core_file', and 'ctty_id'.
2016-05-03Fix buildSamuel Thibault
* trans/crash.c: Include <assert.h>.
2016-04-28Unify and document the way fsids are handled in trivfs translatorsJustus Winter
* doc/hurd.texi: Clarify what happens if 'trivfs_fsid' is zero. * login/utmp.c: Leave 'trivfs_fsid' at zero. * pfinet/main.c: Likewise. * trans/ifsock.c: Likewise. * trans/proxy-defpager.c: Likewise.
2016-03-21netfs: Remove global reference count lock.Flavio Cruz
* libnetfs/drop-node.c: Remove use of netfs_node_refcnt_lock. * libnetfs/init-init.c: Remove netfs_node_refcnt_lock. * libnetfs/make-node.c: Initialize refcounts in refcounts_init. * libnetfs/netfs.h: Use refcounts_t for tracking node references. Remove netfs_node_refcnt_lock. Add netfs_nref_light, netfs_nrele_light and handler netfs_try_dropping_softrefs. Adjust comments. * libnetfs/nput.c: Use refcounts_t. Call netfs_try_dropping_softrefs to remove any soft reference that the translator might have acquired during the lifetime of the node. Implement empty netfs_try_dropping_softrefs. * libnetfs/nref.c: Implement netfs_nref_light. * libnetfs/nrele.c: Use refcounts_t and netfs_try_dropping_softrefs. Implement netfs_nrele_light. * ftpfs/dir.c: Use netfs_nref without locking the old netfs_node_refcnt_lock. * ftpfs/node.c: Likewise. * usermux/mux.c: Use netfs_nref to increase hard references of the node. * hostmux/mux.c: Use netfs_nref to increase hard references of the node. * trans/fakeroot.c (new_node): Use a light reference when storing a node in the hash table. * trans/fakeroot.c (netfs_try_dropping_softrefs): Implement netfs_try_dropping_softrefs to remove the node from the hash table. * trans/fakeroot.c (netfs_node_norefs): Remove code to remove the node from the hash table. * trans/fakeroot.c (netfs_S_dir_lookup): Simplify lookup code since we don't need to lock netfs_node_refcnt_lock anymore. * procfs/netfs.c: Remove use of netfs_node_refcnt_lock. * nfs/cache.c: Add mutex to handle exclusive access to nodehash. This replaces the use of netfs_node_refcnt_lock. * nfs/cache.c (lookup_handle): Use nodehash_ihash_lock when accessing nodehash. Use netfs_nref_light to add one soft reference to the node just added to nodehash. * nfs/cache.c (netfs_node_norefs): Use netfs_nref. Don't use netfs_node_refcnt_lock and don't remove the node from nodehash here. * nfs/cache.c (netfs_try_dropping_softrefs): Drop the light reference when the node has no more hard references. * nfs/cache.c (recache_handle): Use nodehash_ihash_lock instead. * nfs/ops.c (netds_attempt_unlink): Use refcounts_references. * console/console.c (netfs_node_norefs): Use a soft reference to store a node in dir_node, cons_node, disp_node, inp_node. * console/console.c (netfs_try_dropping_softrefs): When dropping all soft references remove node pointer from the fields above.
2016-03-16Add getting swap information from swapon and procfsSamuel Thibault
* hurd/default_pager.defs (default_pager_storage_info): New RPC. * hurd/default_pager_reply.defs: Skip default_pager_storage_info RPC. * hurd/default_pager_types.h: Include <mach/machine/vm_types.h>. (vm_size_array_t): New type. * mach-defpager/priv.h (part): Add `name' field. * mach-defpager/default_pager.c (new_partition): Allocate and fill `part->name' field. Free it on error. (destroy_paging_partition): Free `part->name' field. (S_default_pager_storage_info): New function. * procfs/Makefile (SRCS): Add default_pagerUser.c. * procfs/rootdir.c: Include "default_pager_U.h". (rootdir_gc_swaps): New function. (rootdir_entries): Add "swaps" entry. * sutils/swapon.c: Include <argz.h> (show): New variable. (options): Add --show/-S option. (def_pager, dev_master): New variables (swaponoff): Move getting `def_pager' to... (get_def_pager): ... new function. (main): Support 'S' option. * trans/proxy-defpager.c (S_default_pager_storage_info): New function.
2016-03-15Show firmlink mounts to mount pointsSamuel Thibault
* trans/mtab.c (mtab_populate): Always open the underlying node, and pass it to mtab_mark_as_seen instead of the translated node.
2016-03-15Add get_source support to firmlinkSamuel Thibault
* trans/firmlink.c (trivfs_get_source): New function.
2016-02-21trans/crash: fix suspending taskJustus Winter
* trans/crash.c (S_crash_dump_task): Fix looking up 'user_proc'.
2016-02-15Make fakeroot forward send errors instead of crashingSamuel Thibault
* trans/fakeroot.c (netfs_demuxer): When forwarding an unknown request fail, forward the error instead of crashing.
2016-02-14Fix hang on reauthenticationSamuel Thibault
One needs to keep the port being reauthenticated alive until we are sure the server has complete authentication. * libfshelp/fetch-root.c (fshelp_fetch_root): Deallocate `port' after auth_user_authenticate has completed. * trans/fakeroot.c (netfs_S_dir_lookup): Likewise with `file'.
2015-12-31Use DEVICE_IMPORTS to include libports/ports.hFlavio Cruz
On Thu, Dec 31, 2015 at 04:28:14PM +0100, Justus Winter wrote: > Quoting Samuel Thibault (2015-12-31 16:11:30) > > Flavio Cruz, on Thu 31 Dec 2015 15:56:31 +0100, wrote: > > > This fixes three compiler warnings about ports_payload_get_name. > > > > > > * devnode/Makefile: Define DEVICE_IMPORTS. > > > * term/Makefile: Likewise. > > > * trans/Makefile: Likewise. > > > > Why not adding them to the corresponding mig-mutate.h? > > Sometimes we don't have a mig-mutate.h, e.g. for most (all?) > translators in trans/. I prefer stuffing that in a .h as well, but I > wouldn't be opposed to just applying the patch, as we use both ways of > mutating the mig types. Agreed. I think only devnode should include it in mig-mutate.h. For term, only some stubs are including mig-mutate.h. For trans, there's no mig-mutate.h at all. Here's the modified patch.
2015-12-30Add missing libraries to fix link errorsFlavio Cruz
This fixes several linking problems I had in my recent cross-compilation of the Hurd. I added missing static libraries and also organized some of the targets for more concise rules. * console-client/Makefile: Add libiohelp.a and libihash.a. * daemons/Makefile: Add libihash.a and libshouldbeinlibc.a. * devnode/Makefile: Add iohelp and ihash to HURDLIBS. * random/Makefile: Likewise. * trans/Makefile: Reorder targets alphabetically and add libiohelp.a and libihash.a. * utils/Makefile: Add libihash.a.
2015-12-29fix compiler warnings in hurd/transFlavio Cruz
trans: Fix compiler warnings. * trans/mtab.c (mtab_mark_as_seen): Cast idport to hurd_ihash_value_t. * trans/streamio.c (dev_open): Cast name to char *.
2015-10-29trans: improve demuxersJustus Winter
Handle multiple request types as recommended by the Mach Server Writer's Guide section 4, subsection "Handling Multiple Request Types". This avoids initializing the reply message in every X_server function. * trans/proxy-defpager.c (proxy_defpager_demuxer): Improve the demuxer function. * trans/streamio.c (demuxer): Likewise.
2015-10-20Make fakerooted access() return real accessSvante Signell
Various realworld tests would otherwise think they can write to /, while they actually can't. * trans/fakeroot.c (netfs_report_access): Call file_check_access instead of returning O_RDWR|O_EXEC when faking mode too.
2015-10-12Make dir_lookup create files with user permissions enabledSamuel Thibault
So we will always be able to re-open them. * trans/fakeroot.c (netfs_S_dir_lookup): Call real_from_fake_mode() on modes before calling the underlying filesystem's dir_lookup.
2015-09-27trans/proxy-defpager: convert to trivfs dynamic classes and bucketsJustus Winter
libtrivfs contains two ways of managing more than one port class and bucket. There is the old way of using a statically allocated array with explicit length, and the new way with dynamically allocated vectors. Converting all users to the new way of handling multiple classes and/or buckets, we can simplify the code in libtrivfs. In many cases, the code will be simpler and more expressive for the user. This also fixes a severe bug. As no classes are given to `trivfs_startup', they are created and inserted into the dynamic vector of classes. The helper function `allowed', however, used the first item of the previously used static array, which is NULL. This circumvented the typecheck, allowing the default pager protocol to be spoken over control ports, likely resulting in a crash. * trans/proxy-defpager.c: Convert to dynamic classes and buckets.
2015-09-27trans/passwd: convert to trivfs dynamic classes and bucketsJustus Winter
libtrivfs contains two ways of managing more than one port class and bucket. There is the old way of using a statically allocated array with explicit length, and the new way with dynamically allocated vectors. Converting all users to the new way of handling multiple classes and/or buckets, we can simplify the code in libtrivfs. In many cases, the code will be simpler and more expressive for the user. This also fixes a mild bug. The classes and buckets given to `trivfs_startup' end up in the dynamic vectors too, making the object lookup code use the more complicated code path. * trans/password.c: Convert to dynamic classes and buckets.
2015-09-27trans/new-fifo: convert to trivfs dynamic classes and bucketsJustus Winter
libtrivfs contains two ways of managing more than one port class and bucket. There is the old way of using a statically allocated array with explicit length, and the new way with dynamically allocated vectors. Converting all users to the new way of handling multiple classes and/or buckets, we can simplify the code in libtrivfs. In many cases, the code will be simpler and more expressive for the user. This also fixes a mild bug. The classes and buckets given to `trivfs_startup' end up in the dynamic vectors too, making the object lookup code use the more complicated code path. * trans/new-fifo.c: Convert to dynamic classes and buckets.
2015-09-27trans/magic: convert to trivfs dynamic classes and bucketsJustus Winter
libtrivfs contains two ways of managing more than one port class and bucket. There is the old way of using a statically allocated array with explicit length, and the new way with dynamically allocated vectors. Converting all users to the new way of handling multiple classes and/or buckets, we can simplify the code in libtrivfs. In many cases, the code will be simpler and more expressive for the user. This also fixes a severe bug. As no classes are given to `trivfs_startup', they are created and inserted into the dynamic vector of classes. The server function `trivfs_S_fsys_forward', however, used the first item of the previously used static array, which is NULL. This circumvented the typecheck. * trans/magic.c: Convert to dynamic classes and buckets.
2015-09-27trans/ifsock: convert to trivfs dynamic classes and bucketsJustus Winter
libtrivfs contains two ways of managing more than one port class and bucket. There is the old way of using a statically allocated array with explicit length, and the new way with dynamically allocated vectors. Converting all users to the new way of handling multiple classes and/or buckets, we can simplify the code in libtrivfs. In many cases, the code will be simpler and more expressive for the user. This also fixes a mild bug. The classes and buckets given to `trivfs_startup' end up in the dynamic vectors too, making the object lookup code use the more complicated code path. * trans/ifsock.c: Convert to dynamic classes and buckets.
2015-09-27trans/crash: convert to trivfs dynamic classes and bucketsJustus Winter
libtrivfs contains two ways of managing more than one port class and bucket. There is the old way of using a statically allocated array with explicit length, and the new way with dynamically allocated vectors. Converting all users to the new way of handling multiple classes and/or buckets, we can simplify the code in libtrivfs. In many cases, the code will be simpler and more expressive for the user. This also fixes a mild bug. The classes and buckets given to `trivfs_startup' end up in the dynamic vectors too, making the object lookup code use the more complicated code path. * trans/crash.c: Convert to dynamic classes and buckets.
2015-09-08Fix opening a fifo with O_RDWRSamuel Thibault
We should not wait for a writer in that case, since that will be ourself. * trans/fifo.c (open_hook): Do not wait for a writer when flags contains O_WRITE.
2015-08-14Fake full file access only for faked nodesSamuel Thibault
Otherwise some scripts may try to modify system files just because they find they seem to be able to. * trans/fakeroot.c (netfs_report_access): When FAKE_MODE is not set on `np', call file_check_access on the underlying node instead of returning O_RDWR|O_EXEC.
2015-08-14Make fakeroot return file types from underly fsSamuel Thibault
Fakeroot does not support faking them anyway, and they may change on the underlying fs, e.g. when creating a local socket. * trans/fakeroot.c (netfs_validate_stat): Return S_IFMT part of st_mode as provided by underlying filesystem.
2015-06-17Cope with scripts which chmod -x directoriesSvante Signell
As well as other potential mode changes which are indeed supposed to still work as root. * trans/fakeroot.c (netfs_attempt_chmod): Always set S_IRUSR and S_IWUSR in real_mode, and set S_IXUSR also when this is a directory.
2015-05-23fakeroot: Fix reopening files after a chmodSamuel Thibault
Huge thanks to Svante Signell for having tracked the bug. * trans/fakeroot.c (netfs_attempt_chmod): Make the file_chmod call additionally include the modes from nn->openmodes.
2015-05-23Make comment clearerSamuel Thibault
* trans/fakeroot.c (check_openmodes): Make comment clearer about missing new openmodes.
2015-05-23Make sure to record only RWX open modesSamuel Thibault
Thanks Svante Signell for the investigation and proposed patch. * trans/fakeroot.c (new_node): Assert that `openmodes' includes only O_RDWR|O_EXEC (check_openmodes): Likewise with `newmodes'. (netfs_S_dir_lookup): Keep only O_RDWR|O_EXEC from `flags' when calling new_node.
2015-05-14Fix creating named sockets inside fakeroot-hurdSvante Signell
* trans/fakeroot.c (netfs_set_translator): New function.
2015-03-05Fix space styleSamuel Thibault
2014-12-10fakeroot: Fix initializing default faked field of nodesSamuel Thibault
* trans/fakeroot.c (new_node): Initialize faked field to FAKE_DEFAULT.
2014-12-09Fix mode of nodes created with mkfileSamuel Thibault
Their faked field was not initialized. Thanks a lot to Svante Signell for the investigation * trans/fakeroot.c (new_node): Initialize faked field of nn to 0. (netfs_attempt_mkfile): Call set_default_attributes on newly-allocated node, and if the real mode is not the same as the requested mode, fake the mode.
2014-12-07trans/symlink: disable default payload to port mappingJustus Winter
`fsysServer' is only used by the symlink translator which does not use libports. Therefor, it is not necessary to use the default payload to port translation function. * trans/Makefile (fsys-MIGSFLAGS): Disable the default payload to port translation function.
2014-12-07trans/streamio: make the translator payload-awareJustus Winter
* trans/Makefile (device_reply-MIGSFLAGS): Define MACH_PAYLOAD_TO_PORT.
2014-12-07trans/password: add a payload-aware intrans functionJustus Winter
* trans/Makefile (password-MIGSFLAGS): Add mutator.
2014-12-07trans/ifsock: add a payload-aware intrans functionJustus Winter
* trans/Makefile (ifsock-MIGSFLAGS): Add mutator.
2014-12-07trans/fakeroot: make the demuxer payload-awareJustus Winter
* trans/fakeroot.c (netfs_demuxer): Make the demuxer payload-aware.
2014-11-21trans/mtab: avoid firmlink loopsJustus Winter
* 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.
2014-09-05trans/hello{,-mt}: properly escape contents in trivfs_append_argsJustus Winter
Fixes https://savannah.gnu.org/bugs/?15806 . * trans/hello-mt.c (trivfs_append_args): Escape contents. * trans/hello.c (trivfs_append_args): Likewise.
2014-09-04hurd: make memory_object parameter polymorphicJustus Winter
Make the memory_object parameter of default_pager_object_create polymorphic. This fixes https://savannah.gnu.org/bugs/?26751 . * hurd/default_pager.defs (default_pager_object_create): Make memory_object parameter polymorphic. * mach-defpager/default_pager.c (S_default_pager_object_create): Adjust accordingly. * trans/proxy-defpager.c (S_default_pager_object_create): Likewise.
2014-08-31trans/mtab: use setnullauth to drop privilegesJustus Winter
* trans/mtab.c (main): Use setnullauth to drop privileges.
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