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path: root/pkg/sentry/fs/proc
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2019-01-28Drop the one-page limit for /proc/[pid]/{cmdline,environ}.Jamie Liu
It never actually should have applied to environ (the relevant change in Linux 4.2 is c2c0bb44620d "proc: fix PAGE_SIZE limit of /proc/$PID/cmdline"), and we claim to be Linux 4.4 now anyway. PiperOrigin-RevId: 231250661 Change-Id: I37f9c4280a533d1bcb3eebb7803373ac3c7b9f15
2019-01-18Display /proc/net entries for all network configurations.Rahat Mahmood
Most of the entries are stubbed out at the moment, but even those were only displayed if IPv6 support was enabled. The entries should be displayed with IPv4-support only, and with only loopback devices. PiperOrigin-RevId: 229946441 Change-Id: I18afaa3af386322787f91bf9d168ab66c01d5a4c
2019-01-14Remove fs.Handle, ramfs.Entry, and all the DeprecatedFileOperations.Nicolas Lacasse
More helper structs have been added to the fsutil package to make it easier to implement fs.InodeOperations and fs.FileOperations. PiperOrigin-RevId: 229305982 Change-Id: Ib6f8d3862f4216745116857913dbfa351530223b
2019-01-07Implement /proc/[pid]/smaps.Jamie Liu
PiperOrigin-RevId: 228245523 Change-Id: I5a4d0a6570b93958e51437e917e5331d83e23a7e
2019-01-02Add /proc/net/psched contentFabricio Voznika
FIO reads this file and expects it to be well formed. PiperOrigin-RevId: 227554483 Change-Id: Ia48ae2377626dd6a2daf17b5b4f5119f90ece55b
2018-12-07sentry: turn "dynamically-created" procfs files into static creation.Zhaozhong Ni
PiperOrigin-RevId: 224600982 Change-Id: I547253528e24fb0bb318fc9d2632cb80504acb34
2018-12-07Add period to commentMichael Pratt
PiperOrigin-RevId: 224553291 Change-Id: I35d0772c215b71f4319c23f22df5c61c908f8590
2018-12-04sentry: save / restore netstack procfs configuration.Zhaozhong Ni
PiperOrigin-RevId: 224047120 Change-Id: Ia6cb17fa978595cd73857b6178c4bdba401e185e
2018-11-08Create stubs for syscalls upto Linux 4.4.Rahat Mahmood
Create syscall stubs for missing syscalls upto Linux 4.4 and advertise a kernel version of 4.4. PiperOrigin-RevId: 220667680 Change-Id: Idbdccde538faabf16debc22f492dd053a8af0ba7
2018-10-23Track paths and provide a rename hook.Adin Scannell
This change also adds extensive testing to the p9 package via mocks. The sanity checks and type checks are moved from the gofer into the core package, where they can be more easily validated. PiperOrigin-RevId: 218296768 Change-Id: I4fc3c326e7bf1e0e140a454cbacbcc6fd617ab55
2018-10-19Use correct company name in copyright headerIan Gudger
PiperOrigin-RevId: 217951017 Change-Id: Ie08bf6987f98467d07457bcf35b5f1ff6e43c035
2018-09-04/proc/PID/mounts is not tab-delimitedMichael Pratt
PiperOrigin-RevId: 211513847 Change-Id: Ib484dd2d921c3e5d70d0e410cd973d3bff4f6b73
2018-08-31Do not use fs.FileOwnerFromContext in fs/proc.file.UnstableAttr().Jamie Liu
From //pkg/sentry/context/context.go: // - It is *not safe* to retain a Context passed to a function beyond the scope // of that function call. Passing a stored kernel.Task as a context.Context to fs.FileOwnerFromContext violates this requirement. PiperOrigin-RevId: 211143021 Change-Id: I4c5b02bd941407be4c9cfdbcbdfe5a26acaec037
2018-08-27Add /proc/sys/kernel/shm[all,max,mni].Brian Geffon
PiperOrigin-RevId: 210459956 Change-Id: I51859b90fa967631e0a54a390abc3b5541fbee66
2018-08-23sentry: mark idMapSeqHandle as savable.Zhaozhong Ni
PiperOrigin-RevId: 209994384 Change-Id: I16186cf79cb4760a134f3968db30c168a5f4340e
2018-08-14Fix `ls -laR | wc -l` hanging.Kevin Krakauer
stat()-ing /proc/PID/fd/FD incremented but didn't decrement the refcount for FD. This behavior wasn't usually noticeable, but in the above case: - ls would never decrement the refcount of the write end of the pipe to 0. - This caused the write end of the pipe never to close. - wc would then hang read()-ing from the pipe. PiperOrigin-RevId: 208728817 Change-Id: I4fca1ba5ca24e4108915a1d30b41dc63da40604d
2018-08-02Automated rollback of changelist 207037226Zhaozhong Ni
PiperOrigin-RevId: 207125440 Change-Id: I6c572afb4d693ee72a0c458a988b0e96d191cd49
2018-08-01Automated rollback of changelist 207007153Michael Pratt
PiperOrigin-RevId: 207037226 Change-Id: I8b5f1a056d4f3eab17846f2e0193bb737ecb5428
2018-08-01stateify: convert all packages to use explicit mode.Zhaozhong Ni
PiperOrigin-RevId: 207007153 Change-Id: Ifedf1cc3758dc18be16647a4ece9c840c1c636c9
2018-07-31proc: show file flags in fdinfoAndrei Vagin
Currently, there is an attempt to print FD flags, but they are not decoded into a number, so we see something like this: /criu # cat /proc/self/fdinfo/0 flags: {%!o(bool=000false)} Actually, fdinfo has to contain file flags. Change-Id: Idcbb7db908067447eb9ae6f2c3cfb861f2be1a97 PiperOrigin-RevId: 206794498
2018-07-27stateify: support explicit annotation mode; convert refs and stack packages.Zhaozhong Ni
We have been unnecessarily creating too many savable types implicitly. PiperOrigin-RevId: 206334201 Change-Id: Idc5a3a14bfb7ee125c4f2bb2b1c53164e46f29a8
2018-07-19sentry: save stack in proc net dev.Zhaozhong Ni
PiperOrigin-RevId: 205253858 Change-Id: Iccdc493b66d1b4d39de44afb1184952183b1283f
2018-07-17Merge FileMem.usage in IncRefMichael Pratt
Per the doc, usage must be kept maximally merged. Beyond that, it is simply a good idea to keep fragmentation in usage to a minimum. The glibc malloc allocator allocates one page at a time, potentially causing lots of fragmentation. However, those pages are likely to have the same number of references, often making it possible to merge ranges. PiperOrigin-RevId: 204960339 Change-Id: I03a050cf771c29a4f05b36eaf75b1a09c9465e14
2018-07-13Allow a filesystem to control its visibility in /proc/filesystems.Neel Natu
PiperOrigin-RevId: 204508520 Change-Id: I09e5f8b6e69413370e1a0d39dbb7dc1ee0b6192d
2018-07-12sentry: save inet stacks in proc files.Zhaozhong Ni
PiperOrigin-RevId: 204362791 Change-Id: If85ea7442741e299f0d7cddbc3d6b415e285da81
2018-07-12Format documentationMichael Pratt
PiperOrigin-RevId: 204323728 Change-Id: I1ff9aa062ffa12583b2e38ec94c87db7a3711971
2018-06-28Hold t.mu while calling t.FSContext().Nicolas Lacasse
PiperOrigin-RevId: 202562686 Change-Id: I0f5be7cc9098e86fa31d016251c127cb91084b05
2018-06-26Use the correct Context for /proc/[pid]/maps.Jamie Liu
PiperOrigin-RevId: 202180487 Change-Id: I95cce41a4842ab731a4821b387b32008bfbdcb08
2018-06-26Add Context to seqfile.SeqSource.ReadSeqFileData.Jamie Liu
PiperOrigin-RevId: 202163895 Change-Id: Ib9942fcff80c0834216f4f10780662bef5b52270
2018-06-25MountSource.Root() should return a refernce on the dirent.Nicolas Lacasse
PiperOrigin-RevId: 202038397 Change-Id: I074d525f2e2d9bcd43b247b62f86f9129c101b78
2018-06-15Implement /proc/thread-selfFabricio Voznika
Closes #68 PiperOrigin-RevId: 200725401 Change-Id: I4827009b8aee89d22887c3af67291ccf7058d420
2018-06-05Add support for rpcinet owned procfs files.Brian Geffon
This change will add support for /proc/sys/net and /proc/net which will be managed and owned by rpcinet. This will allow these inodes to be forward as rpcs. PiperOrigin-RevId: 199370799 Change-Id: I2c876005d98fe55dd126145163bee5a645458ce4
2018-05-17Cleanup docsMichael Pratt
This brings the proc document more up-to-date. PiperOrigin-RevId: 197070161 Change-Id: Iae2cf9dc44e3e748a33f497bb95bd3c10d0c094a
2018-05-08Implement /proc/[pid]/statm.Jamie Liu
PiperOrigin-RevId: 195893391 Change-Id: I645b7042d7f4f9dd54723afde3e5df0986e43160
2018-04-28Check in gVisor.Googler
PiperOrigin-RevId: 194583126 Change-Id: Ica1d8821a90f74e7e745962d71801c598c652463
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