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* main.c (argp_parser): New option --anonymous-owner.
* main.h: Publish it.
* process.c (process_lookup_pid): Use it to set the file owner
uid of non-owned processes.
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* proclist.c, proclist.h (proclist_create_node): Use a
ps_context passed by the caller; errors are no longer possible, rename
to proclist_make_node and change the signature accordingly.
* rootdir.c, rootdir.h (rootdir_create_node): Likewise.
* main.c (main): Create the ps_context here and pass it to
root_make_node. (root_make_node): Pass it to proclist_make_node and
rootdir_make_node.
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* main.c: Don't call netfs_server_loop repeatedly; it should
never return.
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* main.c (main): Handle errors from argp_parse and
root_make_node.
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* main.c (argp_parser): Add --compatible, which sets the options
required for compatibility with the procps tools.
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* process.c: Add a status file.
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* process.c: Add the statm file.
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* main.c (argp_parser, main): Add the --kernel-pid option.
* main.h: Publish it.
* rootdir.c (rootdir_gc_cmdline): New function.
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* rootdir.c: Add a (non-empty) meminfo and a vmstat file.
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* main.c (argp_parse, main): Add the --fake-self option.
* main.h: Publish it.
* rootdir.c (rootdir_gc_fakeself, rootdir_entries,
rootdir_create_node): Use it.
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* main.c (argp_parser, main): Add the --stat-mode option.
* process.c (process_lookup_pid): Use it.
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* main.c (argp_parser, main): Add and parse the --clk-tck option.
* main.h: Publish opt_clk_tck.
* process.c (sc_tc): Use the user-provided clock frequency.
* rootdir.c (rootdir_gc_stat): Likewise.
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* rootdir.c (rootdir_gc_uptime, rootdir_gc_stat): assume a
completely idle rather than completely busy system, so that the idle
seconds can be meaningfully divided by the idle jiffies by procps.
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* rootdir.c: Add "meminfo", empty for now.
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* rootdir.c: Add a fake "self" symlink which always points to
init.
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* rootdir.c: Add the root file "loadavg".
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* rootdir.c, rootdir.h: New files.
* main.c: Use rootdir_create_node.
* Makefile: Add the rootdir module.
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* process.c (process_file_make_node, entries): Set the environ
and stat files as readable only by the owner of the process.
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* procfs.c, procfs.h (procfs_node_chown,
procfs_node_chmod, procfs_node_chtype): New functions, encapsulate
access to some nn_stat fields.
* process.c (process_lookup_pid): Use procfs_node_chown instead
of direct access.
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* netfs.c (netfs_validate_stat): For symlinks, fetch the contents
and propagate their length into the nn_stat.st_size field.
(netfs_attempt_readlink): Implement using procfs_get_contents.
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* Makefile: Add libps to the $(LIBS).
* proclist.c, proclist.h: Embed the proc server port in a
ps_context structure. (proclist_make_node): Change to prototype to
allow for the possibility of error. Rename to proclist_create_node to
reflect the change and non-triviality.
* process.c, process.h: Revamp. Use a full-blown procstat
structure instead of just the procinfo fetched from the process
server. Use the additional data to complement [pid]/stat.
(process_lookup_pid): Get a ps_context structure instead of a port to
the process server.
* main.c (root_make_node): Convert to the new interface for
proclist_create_node.
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* netfs.c (netfs_node_norefs): Handle the reference counters
spinlock so as to avoid deadlocking on reentry.
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* procfs.h, procfs.c (procfs_make_ino): New function,
invents an inode number by hashing the parent's and the name of an
entry. (procfs_lookup): Use it to assign an inode number to child
nodes at lookup time.
* main.c (root_make_node): Assign an arbitrary inode number to
the root directory.
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* procfs.c (procfs_lookup): Keep track of the parent directory,
implement the lookup of the dot-directories. (procfs_cleanup):
Release the reference to the parent node, if applicable.
* procfs.h: Add a comment about the parent reference.
* netfs.c (netfs_attempt_lookup): Lock the looked up node after
the directory has been unlocked, in case they are the same.
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* procfs_dir.c (procfs_dir_get_contents): Prepend the . and ..
entries to the ones from the given table.
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* process.c: Add a basic stat file.
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* process.c (process_make_node): Use the owner_uid from the
procinfo structure to set the owner of the created directory.
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* dircat.c, dircat.h: New files, merge directories.
* Makefile: Add the dircat module.
* main.c: Use dircat to merge the proclist into the root
directory, instead of having it as a stand-alone one.
* procfs.h, procfs.c: Add a "refresh hack" to have the
contents of the root directory recreated on each request.
* proclist.c (proclist_make_node): Enable the hack in question.
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* process.c, process.h (process_make_node): Make static,
include a procinfo structure into the node information.
(process_lookup_pid): New function, replaces process_make_node as the
outer interface, returns an error for non-existing processes.
* proclist.c (proclist_lookup): Convert to the new interface.
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* process.c, process.h: New files, implement a process
directory with cmdline and environ files.
* Makefile: Add the process module.
* proclist.c: Replace stub pid files with the real thing.
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* procfs.c, procfs.h: Extend the signature of the
cleanup_contents callback in the procfs_node_ops structure to include
the hook and contents_len. (cleanup_contents_with_free,
cleanup_contents_with_vm_deallocate): New functions, can be used as
a cleanup_contents callback for simple cases.
* procfs_dir.c, procfs_dir.h (procfs_dir_make_node):
Update, add a cleanup callback, make sure the cleanup callback is
invoked if there is an error.
* proclist.c (proclist_make_node), main.c (main): Update to match
the new interfaces.
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* procfs.c (procfs_make_node): Invoke the cleanup callback on
failure, so that callers don't have to.
* procfs.h: Document the change.
* procfs_dir.c (procfs_dir_make_node), procfs_file.c
(procfs_file_make_node), proclist.c (proclist_make_node):
Update to reflect the change.
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* proclist.h, proclist.c: New files.
* main.c: Add a proclist directory based on them.
* Makefile: Include the proclist module.
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* procfs_dir.h: New file; declare the procfs_dir_make_node
function, based on the procfs_dir_entry structure.
* procfs_dir.c: New file; implement simple directories.
* Makefile: Add the procfs_dir module.
* main.c: Use it.
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* procfs_file.h: New file, declares procfs_file_make_node.
* procfs_file.c: New file, implements procfs_file_make_node.
* main.c: Use them.
* Makefile: Add the procfs_file module.
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* procfs.h: New file; basic interfaces for procfs nodes.
* procfs.c: New file; implement the basic infrastructure.
* netfs.c: New file; bridge libnetfs and the procfs interfaces.
* main.c: New file; mostly a "Hello, World!" for now.
* Makefile: New file; standalone for now.
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As suggested by Sergio Lopez.
* serverboot/default_pager.c (S_default_pager_object_set_size): Exchange
`seqno' and `reply_to' parameters.
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* serverboot/default_pager.c (struct dstruct): Add boolean_t external field.
(default_pager_add): Set ds->external to TRUE or FALSE depending whether the
object is external.
(default_read): Add external parameter. If no_block(block) returns 1, if
external is TRUE, zero fill the page and return PAGER_SUCCESS instead of
PAGER_ABSENT.
(seqnos_memory_object_data_request): Pass ds->external as additional
parameter to default_read.
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