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2019-06-04Drop one dirent reference after referenced by fileYong He
When pipe is created, a dirent of pipe will be created and its initial reference is set as 0. Cause all dirent will only be destroyed when the reference decreased to -1, so there is already a 'initial reference' of dirent after it created. For destroying dirent after all reference released, the correct way is to drop the 'initial reference' once someone hold a reference to the dirent, such as fs.NewFile, otherwise the reference of dirent will stay 0 all the time, and will cause memory leak of dirent. Except pipe, timerfd/eventfd/epoll has the same problem Here is a simple case to create memory leak of dirent for pipe/timerfd/eventfd/epoll in C langange, after run the case, pprof the runsc process, you will find lots dirents of pipe/timerfd/eventfd/epoll not freed: int main(int argc, char *argv[]) { int i; int n; int pipefd[2]; if (argc != 3) { printf("Usage: %s epoll|timerfd|eventfd|pipe <iterations>\n", argv[0]); } n = strtol(argv[2], NULL, 10); if (strcmp(argv[1], "epoll") == 0) { for (i = 0; i < n; ++i) close(epoll_create(1)); } else if (strcmp(argv[1], "timerfd") == 0) { for (i = 0; i < n; ++i) close(timerfd_create(CLOCK_REALTIME, 0)); } else if (strcmp(argv[1], "eventfd") == 0) { for (i = 0; i < n; ++i) close(eventfd(0, 0)); } else if (strcmp(argv[1], "pipe") == 0) { for (i = 0; i < n; ++i) if (pipe(pipefd) == 0) { close(pipefd[0]); close(pipefd[1]); } } printf("%s %s test finished\r\n",argv[1],argv[2]); return 0; } Change-Id: Ia1b8a1fb9142edb00c040e44ec644d007f81f5d2 PiperOrigin-RevId: 251531096
2019-06-03gvisor/sock/unix: pass creds when a message is sent between unconnected socketsAndrei Vagin
and don't report a sender address if it doesn't have one PiperOrigin-RevId: 251371284
2019-06-03gvisor/fs: return a proper error from FileWriter.Write in case of a short-writeAndrei Vagin
The io.Writer contract requires that Write writes all available bytes and does not return short writes. This causes errors with io.Copy, since our own Write interface does not have this same contract. PiperOrigin-RevId: 251368730
2019-05-30Simplify overlayBoundEndpoint.Nicolas Lacasse
There is no reason to do the recursion manually, since Inode.BoundEndpoint will do it for us. PiperOrigin-RevId: 250794903
2019-05-30Add VmData field to /proc/{pid}/statuschris.zn
VmData is the size of private data segments. It has the same meaning as in Linux. Change-Id: Iebf1ae85940a810524a6cde9c2e767d4233ddb2a PiperOrigin-RevId: 250593739
2019-05-30Remove obsolete bug.Adin Scannell
The original bug is no longer relevant, and the FIXME here contains lots of obsolete information. PiperOrigin-RevId: 249924036
2019-05-24Remove obsolete TODO.Adin Scannell
We don't need to model internal interfaces after the system call interfaces (which are objectively worse and simply use a flag to distinguish between two logically different operations). PiperOrigin-RevId: 249916814 Change-Id: I45d02e0ec0be66b782a685b1f305ea027694cab9
2019-05-23gvisor: interrupt the sendfile system call if a task has been interruptedAndrei Vagin
sendfile can be called for a big range and it can require significant amount of time to process it, so we need to handle task interrupts in this system call. PiperOrigin-RevId: 249781023 Change-Id: Ifc2ec505d74c06f5ee76f93b8d30d518ec2d4015
2019-05-23Added boilerplate code for ext4 fs.Ayush Ranjan
Initialized BUILD with license Mount is still unimplemented and is not meant to be part of this CL. Rest of the fs interface is implemented. Referenced the Linux kernel appropriately when needed PiperOrigin-RevId: 249741997 Change-Id: Id1e4c7c9e68b3f6946da39896fc6a0c3dcd7f98c
2019-05-23Initial support for bind mountsFabricio Voznika
Separate MountSource from Mount. This is needed to allow mounts to be shared by multiple containers within the same pod. PiperOrigin-RevId: 249617810 Change-Id: Id2944feb7e4194951f355cbe6d4944ae3c02e468
2019-05-22Remove obsolete TODO.Adin Scannell
There no obvious reason to require that BlockSize and StatFS are MountSource operations. Today they are in INodeOperations, and they can be moved elsewhere in the future as part of a normal refactor process. PiperOrigin-RevId: 249549982 Change-Id: Ib832e02faeaf8253674475df4e385bcc53d780f3
2019-05-21Add basic plumbing for splice and stub implementation.Adin Scannell
This does not actually implement an efficient splice or sendfile. Rather, it adds a generic plumbing to the file internals so that this can be added. All file implementations use the stub fileutil.NoSplice implementation, which causes sendfile and splice to fall back to an internal copy. A basic splice system call interface is added, along with a test. PiperOrigin-RevId: 249335960 Change-Id: Ic5568be2af0a505c19e7aec66d5af2480ab0939b
2019-05-21Remove unused struct member.Neel Natu
Remove unused struct member. PiperOrigin-RevId: 249300446 Change-Id: Ifb16538f684bc3200342462c3da927eb564bf52d
2019-05-20Forward named pipe creation to the goferMichael Pratt
The backing 9p server must allow named pipe creation, which the runsc fsgofer currently does not. There are small changes to the overlay here. GetFile may block when opening a named pipe, which can cause a deadlock: 1. open(O_RDONLY) -> copyMu.Lock() -> GetFile() 2. open(O_WRONLY) -> copyMu.Lock() -> Deadlock A named pipe usable for writing must already be on the upper filesystem, but we are still taking copyMu for write when checking for upper. That can be changed to a read lock to fix the common case. However, a named pipe on the lower filesystem would still deadlock in open(O_WRONLY) when it tries to actually perform copy up (which would simply return EINVAL). Move the copy up type check before taking copyMu for write to avoid this. p9 must be modified, as it was incorrectly removing the file mode when sending messages on the wire. PiperOrigin-RevId: 249154033 Change-Id: Id6637130e567b03758130eb6c7cdbc976384b7d6
2019-05-20Fix incorrect tmpfs timestamp updatesMichael Pratt
* Creation of files, directories (and other fs objects) in a directory should always update ctime. * Same for removal. * atime should not be updated on lookup, only readdir. I've also renamed some misleading functions that update mtime and ctime. PiperOrigin-RevId: 249115063 Change-Id: I30fa275fa7db96d01aa759ed64628c18bb3a7dc7
2019-05-17Return EPERM for mknodMichael Pratt
This more directly matches what Linux does with unsupported nodes. PiperOrigin-RevId: 248780425 Change-Id: I17f3dd0b244f6dc4eb00e2e42344851b8367fbec
2019-05-17Fix gofer rename ctime and cleanup stat_times testMichael Pratt
There is a lot of redundancy that we can simplify in the stat_times test. This will make it easier to add new tests. However, the simplification reveals that cached uattrs on goferfs don't properly update ctime on rename. PiperOrigin-RevId: 248773425 Change-Id: I52662728e1e9920981555881f9a85f9ce04041cf
2019-05-15gofer: don't call hostfile.Close if hostFile is nilAndrei Vagin
PiperOrigin-RevId: 248437159 Change-Id: Ife71f6ca032fca59ec97a82961000ed0af257101
2019-05-14Start of support for /proc/pid/cgroup file.Nicolas Lacasse
PiperOrigin-RevId: 248263378 Change-Id: Ic057d2bb0b6212110f43ac4df3f0ac9bf931ab98
2019-05-14Remove false commentMichael Pratt
PiperOrigin-RevId: 248249285 Change-Id: I9b6d267baa666798b22def590ff20c9a118efd47
2019-05-09Implement fallocate(2)Fabricio Voznika
Closes #225 PiperOrigin-RevId: 247508791 Change-Id: I04f47cf2770b30043e5a272aba4ba6e11d0476cc
2019-05-08Set the FilesytemType in MountSource from the Filesystem.Nicolas Lacasse
And stop storing the Filesystem in the MountSource. This allows us to decouple the MountSource filesystem type from the name of the filesystem. PiperOrigin-RevId: 247292982 Change-Id: I49cbcce3c17883b7aa918ba76203dfd6d1b03cc8
2019-05-07Remove defers from gofer.contextFileFabricio Voznika
Most are single line methods in hot paths. PiperOrigin-RevId: 247050267 Change-Id: I428d78723fe00b57483185899dc8fa9e1f01e2ea
2019-05-03gofer: don't leak file descriptorsAndrei Vagin
Fixes #219 PiperOrigin-RevId: 246568639 Change-Id: Ic7afd15dde922638d77f6429c508d1cbe2e4288a
2019-04-30Update reference to old typeMichael Pratt
PiperOrigin-RevId: 246036806 Change-Id: I5554a43a1f8146c927402db3bf98488a2da0fbe7
2019-04-30Implement async MemoryFile eviction, and use it in CachingInodeOperations.Jamie Liu
This feature allows MemoryFile to delay eviction of "optional" allocations, such as unused cached file pages. Note that this incidentally makes CachingInodeOperations writeback asynchronous, in the sense that it doesn't occur until eviction; this is necessary because between when a cached page becomes evictable and when it's evicted, file writes (via CachingInodeOperations.Write) may dirty the page. As currently implemented, this feature won't meaningfully impact steady-state memory usage or caching; the reclaimer goroutine will schedule eviction as soon as it runs out of other work to do. Future CLs increase caching by adding constraints on when eviction is scheduled. PiperOrigin-RevId: 246014822 Change-Id: Ia85feb25a2de92a48359eb84434b6ec6f9bea2cb
2019-04-29Implement the MSG_CTRUNC msghdr flag for Unix sockets.Ian Gudger
Updates google/gvisor#206 PiperOrigin-RevId: 245880573 Change-Id: Ifa715e98d47f64b8a32b04ae9378d6cd6bd4025e
2019-04-29Change copyright notice to "The gVisor Authors"Michael Pratt
Based on the guidelines at https://opensource.google.com/docs/releasing/authors/. 1. $ rg -l "Google LLC" | xargs sed -i 's/Google LLC.*/The gVisor Authors./' 2. Manual fixup of "Google Inc" references. 3. Add AUTHORS file. Authors may request to be added to this file. 4. Point netstack AUTHORS to gVisor AUTHORS. Drop CONTRIBUTORS. Fixes #209 PiperOrigin-RevId: 245823212 Change-Id: I64530b24ad021a7d683137459cafc510f5ee1de9
2019-04-29Allow and document bug ids in gVisor codebase.Nicolas Lacasse
PiperOrigin-RevId: 245818639 Change-Id: I03703ef0fb9b6675955637b9fe2776204c545789
2019-04-26Fix reference counting bug in /proc/PID/fdinfo/.Kevin Krakauer
PiperOrigin-RevId: 245452217 Change-Id: I7164d8f57fe34c17e601079eb9410a6d95af1869
2019-04-25Don't enforce NAME_MAX in fs.Dirent.walk().Jamie Liu
Maximum filename length is filesystem-dependent, and obtained via statfs::f_namelen. This limit is usually 255 bytes (NAME_MAX), but not always. For example, VFAT supports filenames of up to 255... UCS-2 characters, which Linux conservatively takes to mean UTF-8-encoded bytes: fs/fat/inode.c:fat_statfs(), FAT_LFN_LEN * NLS_MAX_CHARSET_SIZE. As a result, Linux's VFS does not enforce NAME_MAX: $ rg --maxdepth=1 '\WNAME_MAX\W' fs/ include/linux/ fs/libfs.c 38: buf->f_namelen = NAME_MAX; 64: if (dentry->d_name.len > NAME_MAX) include/linux/relay.h 74: char base_filename[NAME_MAX]; /* saved base filename */ include/linux/fscrypt.h 149: * filenames up to NAME_MAX bytes, since base64 encoding expands the length. include/linux/exportfs.h 176: * understanding that it is already pointing to a a %NAME_MAX+1 sized Remove this check from core VFS, and add it to ramfs (and by extension tmpfs), where it is actually applicable: mm/shmem.c:shmem_dir_inode_operations.lookup == simple_lookup *does* enforce NAME_MAX. PiperOrigin-RevId: 245324748 Change-Id: I17567c4324bfd60e31746a5270096e75db963fac
2019-04-22Fix doc typoMichael Pratt
PiperOrigin-RevId: 244773890 Change-Id: I2d0cd7789771276ba545b38efff6d3e24133baaa
2019-04-17Use FD limit and file size limit from hostFabricio Voznika
FD limit and file size limit is read from the host, instead of using hard-coded defaults, given that they effect the sandbox process. Also limit the direct cache to use no more than half if the available FDs. PiperOrigin-RevId: 244050323 Change-Id: I787ad0fdf07c49d589e51aebfeae477324fe26e6
2019-04-11Use open fids when fstat()ing gofer files.Jamie Liu
PiperOrigin-RevId: 243018347 Change-Id: I1e5b80607c1df0747482abea61db7fcf24536d37
2019-04-10Fix uses of RootFromContext.Nicolas Lacasse
RootFromContext can return a dirent with reference taken, or nil. We must call DecRef if (and only if) a real dirent is returned. PiperOrigin-RevId: 242965515 Change-Id: Ie2b7b4cb19ee09b6ccf788b71f3fd7efcdf35a11
2019-04-10DATA RACE in fs.(*Dirent).fullNameYong He
add renameMu.Lock when oldParent == newParent in order to avoid data race in following report: WARNING: DATA RACE Read at 0x00c000ba2160 by goroutine 405: gvisor.googlesource.com/gvisor/pkg/sentry/fs.(*Dirent).fullName() pkg/sentry/fs/dirent.go:246 +0x6c gvisor.googlesource.com/gvisor/pkg/sentry/fs.(*Dirent).FullName() pkg/sentry/fs/dirent.go:356 +0x8b gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*FDMap).String() pkg/sentry/kernel/fd_map.go:135 +0x1e0 fmt.(*pp).handleMethods() GOROOT/src/fmt/print.go:603 +0x404 fmt.(*pp).printArg() GOROOT/src/fmt/print.go:686 +0x255 fmt.(*pp).doPrintf() GOROOT/src/fmt/print.go:1003 +0x33f fmt.Fprintf() GOROOT/src/fmt/print.go:188 +0x7f gvisor.googlesource.com/gvisor/pkg/log.(*Writer).Emit() pkg/log/log.go:121 +0x89 gvisor.googlesource.com/gvisor/pkg/log.GoogleEmitter.Emit() pkg/log/glog.go:162 +0x1acc gvisor.googlesource.com/gvisor/pkg/log.(*GoogleEmitter).Emit() <autogenerated>:1 +0xe1 gvisor.googlesource.com/gvisor/pkg/log.(*BasicLogger).Debugf() pkg/log/log.go:177 +0x111 gvisor.googlesource.com/gvisor/pkg/log.Debugf() pkg/log/log.go:235 +0x66 gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).Debugf() pkg/sentry/kernel/task_log.go:48 +0xfe gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).DebugDumpState() pkg/sentry/kernel/task_log.go:66 +0x11f gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*runApp).execute() pkg/sentry/kernel/task_run.go:272 +0xc80 gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).run() pkg/sentry/kernel/task_run.go:91 +0x24b Previous write at 0x00c000ba2160 by goroutine 423: gvisor.googlesource.com/gvisor/pkg/sentry/fs.Rename() pkg/sentry/fs/dirent.go:1628 +0x61f gvisor.googlesource.com/gvisor/pkg/sentry/syscalls/linux.renameAt.func1.1() pkg/sentry/syscalls/linux/sys_file.go:1864 +0x1f8 gvisor.googlesource.com/gvisor/pkg/sentry/syscalls/linux.fileOpAt( gvisor.googlesource.com/g/linux/sys_file.go:51 +0x20f gvisor.googlesource.com/gvisor/pkg/sentry/syscalls/linux.renameAt.func1() pkg/sentry/syscalls/linux/sys_file.go:1852 +0x218 gvisor.googlesource.com/gvisor/pkg/sentry/syscalls/linux.fileOpAt() pkg/sentry/syscalls/linux/sys_file.go:51 +0x20f gvisor.googlesource.com/gvisor/pkg/sentry/syscalls/linux.renameAt() pkg/sentry/syscalls/linux/sys_file.go:1840 +0x180 gvisor.googlesource.com/gvisor/pkg/sentry/syscalls/linux.Rename() pkg/sentry/syscalls/linux/sys_file.go:1873 +0x60 gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).executeSyscall() pkg/sentry/kernel/task_syscall.go:165 +0x17a gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke() pkg/sentry/kernel/task_syscall.go:283 +0xb4 gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter() pkg/sentry/kernel/task_syscall.go:244 +0x10c gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).doSyscall() pkg/sentry/kernel/task_syscall.go:219 +0x1e3 gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*runApp).execute() pkg/sentry/kernel/task_run.go:215 +0x15a9 gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).run() pkg/sentry/kernel/task_run.go:91 +0x24b Reported-by: syzbot+e1babbf756fab380dfff@syzkaller.appspotmail.com Change-Id: Icd2620bb3ea28b817bf0672d454a22b9d8ee189a PiperOrigin-RevId: 242938741
2019-04-10Start saving MountSource.DirentCache.Nicolas Lacasse
DirentCache is already a savable type, and it ensures that it is empty at the point of Save. There is no reason not to save it along with the MountSource. This did uncover an issue where not all MountSources were properly flushed before Save. If a mount point has an open file and is then unmounted, we save the MountSource without flushing it first. This CL also fixes that by flushing all MountSources for all open FDs on Save. PiperOrigin-RevId: 242906637 Change-Id: I3acd9d52b6ce6b8c989f835a408016cb3e67018f
2019-04-10Fixed /proc/cpuinfo permissionsShiva Prasanth
This also applies these permissions to other static proc files. Change-Id: I4167e585fed49ad271aa4e1f1260babb3239a73d PiperOrigin-RevId: 242898575
2019-04-08Export kernel.SignalInfoPriv.Jamie Liu
Also add kernel.SignalInfoNoInfo, and use it in RLIMIT_FSIZE checks. PiperOrigin-RevId: 242562428 Change-Id: I4887c0e1c8f5fddcabfe6d4281bf76d2f2eafe90
2019-04-08Intermediate ram fs dirs should be writable.Nicolas Lacasse
We construct a ramfs tree of "scaffolding" directories for all mount points, so that a directory exists that each mount point can be mounted over. We were creating these directories without write permissions, which meant that they were not wribable even when underlayed under a writable filesystem. They should be writable. PiperOrigin-RevId: 242507789 Change-Id: I86645e35417560d862442ff5962da211dbe9b731
2019-04-05Use string type for extended attribute values, instead of []byte.Nicolas Lacasse
Strings are a better fit for this usage because they are immutable in Go, and can contain arbitrary bytes. It also allows us to avoid casting bytes to string (and the associated allocation) in the hot path when checking for overlay whiteouts. PiperOrigin-RevId: 242208856 Change-Id: I7699ae6302492eca71787dd0b72e0a5a217a3db2
2019-04-04gvisor: Add support for the MS_NOEXEC mount optionAndrei Vagin
https://github.com/google/gvisor/issues/145 PiperOrigin-RevId: 242044115 Change-Id: I8f140fe05e32ecd438b6be218e224e4b7fe05878
2019-04-03Don't release d.mu in checks for child-existence.Nicolas Lacasse
Dirent.exists() is called in Create to check whether a child with the given name already exists. Dirent.exists() calls walk(), and before this CL allowed walk() to drop d.mu while calling d.Inode.Lookup. During this existence check, a racing Rename() can acquire d.mu and create a new child of the dirent with the same name. (Note that the source and destination of the rename must be in the same directory, otherwise renameMu will be taken preventing the race.) In this case, d.exists() can return false, even though a child with the same name actually does exist. This CL changes d.exists() so that it does not release d.mu while walking, thus preventing the race with Rename. It also adds comments noting that lockForRename may not take renameMu if the source and destination are in the same directory, as this is a bit surprising (at least it was to me). PiperOrigin-RevId: 241842579 Change-Id: I56524870e39dfcd18cab82054eb3088846c34813
2019-04-03Fix index out of bounds in tty implementation.Kevin Krakauer
The previous implementation revolved around runes instead of bytes, which caused weird behavior when converting between the two. For example, peekRune would read the byte 0xff from a buffer, convert it to a rune, then return it. As rune is an alias of int32, 0xff was 0-padded to int32(255), which is the hex code point for ?. However, peekRune also returned the length of the byte (1). When calling utf8.EncodeRune, we only allocated 1 byte, but tried the write the 2-byte character ?. tl;dr: I apparently didn't understand runes when I wrote this. PiperOrigin-RevId: 241789081 Change-Id: I14c788af4d9754973137801500ef6af7ab8a8727
2019-04-03Addresses data race in tty implementation.Kevin Krakauer
Also makes the safemem reading and writing inline, as it makes it easier to see what locks are held. PiperOrigin-RevId: 241775201 Change-Id: Ib1072f246773ef2d08b5b9a042eb7e9e0284175c
2019-04-02Add test that symlinking over a directory returns EEXIST.Nicolas Lacasse
Also remove comments in InodeOperations that required that implementation of some Create* operations ensure that the name does not already exist, since these checks are all centralized in the Dirent. PiperOrigin-RevId: 241637335 Change-Id: Id098dc6063ff7c38347af29d1369075ad1e89a58
2019-04-02device: fix device major/minorWei Zhang
Current gvisor doesn't give devices a right major and minor number. When testing golang supporting of gvisor, I run the test case below: ``` $ docker run -ti --runtime runsc golang:1.12.1 bash -c "cd /usr/local/go/src && ./run.bash " ``` And it reports some errors, one of them is: "--- FAIL: TestDevices (0.00s) --- FAIL: TestDevices//dev/null_1:3 (0.00s) dev_linux_test.go:45: for /dev/null Major(0x0) == 0, want 1 dev_linux_test.go:48: for /dev/null Minor(0x0) == 0, want 3 dev_linux_test.go:51: for /dev/null Mkdev(1, 3) == 0x103, want 0x0 --- FAIL: TestDevices//dev/zero_1:5 (0.00s) dev_linux_test.go:45: for /dev/zero Major(0x0) == 0, want 1 dev_linux_test.go:48: for /dev/zero Minor(0x0) == 0, want 5 dev_linux_test.go:51: for /dev/zero Mkdev(1, 5) == 0x105, want 0x0 --- FAIL: TestDevices//dev/random_1:8 (0.00s) dev_linux_test.go:45: for /dev/random Major(0x0) == 0, want 1 dev_linux_test.go:48: for /dev/random Minor(0x0) == 0, want 8 dev_linux_test.go:51: for /dev/random Mkdev(1, 8) == 0x108, want 0x0 --- FAIL: TestDevices//dev/full_1:7 (0.00s) dev_linux_test.go:45: for /dev/full Major(0x0) == 0, want 1 dev_linux_test.go:48: for /dev/full Minor(0x0) == 0, want 7 dev_linux_test.go:51: for /dev/full Mkdev(1, 7) == 0x107, want 0x0 --- FAIL: TestDevices//dev/urandom_1:9 (0.00s) dev_linux_test.go:45: for /dev/urandom Major(0x0) == 0, want 1 dev_linux_test.go:48: for /dev/urandom Minor(0x0) == 0, want 9 dev_linux_test.go:51: for /dev/urandom Mkdev(1, 9) == 0x109, want 0x0 " So I think we'd better assign to them correct major/minor numbers following linux spec. Signed-off-by: Wei Zhang <zhangwei198900@gmail.com> Change-Id: I4521ee7884b4e214fd3a261929e3b6dac537ada9 PiperOrigin-RevId: 241609021
2019-04-01gvisor: convert ilist to ilist:generic_listAndrei Vagin
ilist:generic_list works faster (cl/240185278) and the code looks cleaner without type casting. PiperOrigin-RevId: 241381175 Change-Id: I8487ab1d73637b3e9733c253c56dce9e79f0d35f
2019-03-29Return srclen in proc.idMapFileOperations.Write.Jamie Liu
PiperOrigin-RevId: 241037926 Change-Id: I4b0381ac1c7575e8b861291b068d3da22bc03850
2019-03-28Internal change.Googler
PiperOrigin-RevId: 240842801 Change-Id: Ibbd6f849f9613edc1b1dd7a99a97d1ecdb6e9188
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