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path: root/pkg/sentry/syscalls/linux
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2020-02-26Merge release-20200219.0-45-gfba479b (automated)gVisor bot
2020-02-25Fix DATA RACE in fs.MayDelete.Adin Scannell
MayDelete must lock the directory also, otherwise concurrent renames may race. Note that this also changes the methods to be aligned with the actual Remove and RemoveDirectory methods to minimize confusion when reading the code. (It was hard to see that resolution was correct.) PiperOrigin-RevId: 297258304
2020-02-25Merge release-20200219.0-37-g471b15b (automated)gVisor bot
2020-02-25Port most syscalls to VFS2.Jamie Liu
pipe and pipe2 aren't ported, pending a slight rework of pipe FDs for VFS2. mount and umount2 aren't ported out of temporary laziness. access and faccessat need additional FSImpl methods to implement properly, but are stubbed to prevent googletest from CHECK-failing. Other syscalls require additional plumbing. Updates #1623 PiperOrigin-RevId: 297188448
2020-02-20Merge release-20200211.0-55-gd90d714 (automated)gVisor bot
2020-02-20Remove bytes read/written from marshal.Marshallable API.gVisor bot
Users of the API only care about whether the copy in/out succeeds in their entirety, which is already signalled by the returned error. PiperOrigin-RevId: 296297843
2020-02-15Merge release-20200211.0-25-ga5069f8 (automated)gVisor bot
2020-02-14Remove linux.EpollEvent.Fd.gVisor bot
glibc defines struct epoll_event in such a way that epoll_event.data.fd exists. However, the kernel's definition of struct epoll_event makes epoll_event.data an opaque uint64, so naming half of it "fd" just introduces confusion. Remove the Fd field, and make Data a [2]int32 to compensate. Also add required padding to linux.EpollEvent on ARM64. PiperOrigin-RevId: 295250424
2020-02-14Merge release-20200211.0-18-g3c26f5e (automated)gVisor bot
2020-02-14Enable automated marshalling for struct stat.gVisor bot
This requires fixing a few build issues for non-am64 platforms. PiperOrigin-RevId: 295196922
2020-02-14Merge release-20200211.0-17-g4075de1 (automated)gVisor bot
2020-02-14Plumb VFS2 inside the SentrygVisor bot
- Added fsbridge package with interface that can be used to open and read from VFS1 and VFS2 files. - Converted ELF loader to use fsbridge - Added VFS2 types to FSContext - Added vfs.MountNamespace to ThreadGroup Updates #1623 PiperOrigin-RevId: 295183950
2020-02-11Merge release-20200127.0-130-g9be46e5 (automated)gVisor bot
2020-02-10Merge release-20200127.0-117-g475316e (automated)gVisor bot
2020-02-10Refactor getxattr.Dean Deng
Put most of the logic for getxattr in one place for clarity. This simplifies FGetXattr and getXattrFromPath, which are just wrappers for getXattr. PiperOrigin-RevId: 294308332
2020-02-07Merge release-20200127.0-99-g17b9f5e (automated)gVisor bot
2020-02-07Support listxattr and removexattr syscalls.Dean Deng
Note that these are only implemented for tmpfs, and other impls will still return EOPNOTSUPP. PiperOrigin-RevId: 293899385
2020-02-06Merge release-20200127.0-85-g1b6a12a (automated)gVisor bot
2020-02-05Merge release-20200127.0-82-geea0eee (automated)gVisor bot
2020-02-05Disable get/set xattrs until list/remove exist too.Nicolas Lacasse
PiperOrigin-RevId: 293411655
2020-02-04Merge release-20200127.0-65-g95ce8bb (automated)gVisor bot
2020-02-04Merge release-20200127.0-63-g6823b5e (automated)gVisor bot
2020-02-04timer_create(2) should return 0 on successMichael Pratt
The timer ID is copied out to the argument. Fixes #1738 PiperOrigin-RevId: 293210801
2020-01-30Merge release-20200127.0-35-gede8dfa (automated)gVisor bot
2020-01-30Enforce splice offset limitsMichael Pratt
Splice must not allow negative offsets. Writes also must not allow offset + size to overflow int64. Reads are similarly broken, but not just in splice (b/148095030). Reported-by: syzbot+0e1ff0b95fb2859b4190@syzkaller.appspotmail.com PiperOrigin-RevId: 292361208
2020-01-29Merge release-20200115.0-127-g3d046fe (automated)gVisor bot
2020-01-28Changes missing in last submitFabricio Voznika
Updates #1487 Updates #1623 PiperOrigin-RevId: 292040835
2020-01-28Merge release-20200115.0-125-g437c986 (automated)gVisor bot
2020-01-28Add vfs.FileDescription to FD tableFabricio Voznika
FD table now holds both VFS1 and VFS2 types and uses the correct one based on what's set. Parts of this CL are just initial changes (e.g. sys_read.go, runsc/main.go) to serve as a template for the remaining changes. Updates #1487 Updates #1623 PiperOrigin-RevId: 292023223
2020-01-28Merge release-20200115.0-122-gf263801 (automated)gVisor bot
2020-01-28fs/splice: don't report partial errors for special filesAndrei Vagin
Special files can have additional requirements for granularity. For example, read from eventfd returns EINVAL if a size is less 8 bytes. Reported-by: syzbot+3905f5493bec08eb7b02@syzkaller.appspotmail.com PiperOrigin-RevId: 292002926
2020-01-28Merge release-20200115.0-118-g76483b8 (automated)gVisor bot
2020-01-28Check sigsetsize in rt_sigactionMichael Pratt
This isn't in the libc wrapper, but it is in the syscall itself. Discovered by @xiaobo55x in #1625. PiperOrigin-RevId: 291973931
2020-01-27Merge release-20200115.0-110-g0e2f1b7 (automated)gVisor bot
2020-01-27Update package locations.Adin Scannell
Because the abi will depend on the core types for marshalling (usermem, context, safemem, safecopy), these need to be flattened from the sentry directory. These packages contain no sentry-specific details. PiperOrigin-RevId: 291811289
2020-01-27Merge release-20200115.0-105-g13c1f38 (automated)gVisor bot
2020-01-27Update bug number for supporting extended attribute namespaces.Dean Deng
PiperOrigin-RevId: 291774815
2020-01-27Standardize on tools directory.Adin Scannell
PiperOrigin-RevId: 291745021
2020-01-22Merge release-20200115.0-65-gf6225b1 (automated)gVisor bot
2020-01-21Merge pull request #1609 from xiaobo55x:unamegVisor bot
PiperOrigin-RevId: 290849438
2020-01-21Merge release-20200115.0-49-g2ba6198 (automated)gVisor bot
2020-01-21Add syscalls for lgetxattr, fgetxattr, lsetxattr, and fsetxattr.Dean Deng
Note that these simply will use the same logic as getxattr and setxattr, which is not yet implemented for most filesystems. PiperOrigin-RevId: 290800960
2020-01-20Enable uname syscall support on arm64.Haibo Xu
Signed-off-by: Haibo Xu <haibo.xu@arm.com> Change-Id: I206f38416a64d7c6a8531d8eb305c6ea239616b8
2020-01-17Merge release-20200115.0-26-gacf2d6d (automated)gVisor bot
2020-01-17Enable stat syscall support on arm64.Haibo Xu
x86 and arm64 use a different stat struct in Linux kernel, so the stat() syscall implementation has to handle the file stat data separately. Signed-off-by: Haibo Xu <haibo.xu@arm.com> Change-Id: If3986e915a667362257a54e7fbbcc1fe18951015 COPYBARA_INTEGRATE_REVIEW=https://github.com/google/gvisor/pull/1493 from xiaobo55x:stat f15a216d9297eb9a96d2c483d396a9919145d7fa PiperOrigin-RevId: 290274287
2020-01-17Merge release-20200115.0-16-g7a45ae7 (automated)gVisor bot
2020-01-16Implement setxattr for overlays.Dean Deng
PiperOrigin-RevId: 290186303
2020-01-16Merge release-20200115.0-9-g07f2584 (automated)gVisor bot
2020-01-16Plumb getting/setting xattrs through InodeOperations and 9p gofer interfaces.Dean Deng
There was a very bare get/setxattr in the InodeOperations interface. Add context.Context to both, size to getxattr, and flags to setxattr. Note that extended attributes are passed around as strings in this implementation, so size is automatically encoded into the value. Size is added in getxattr so that implementations can return ERANGE if a value is larger than can fit in the user-allocated buffer. This prevents us from unnecessarily passing around an arbitrarily large xattr when the user buffer is actually too small. Don't use the existing xattrwalk and xattrcreate messages and define our own, mainly for the sake of simplicity. Extended attributes will be implemented in future commits. PiperOrigin-RevId: 290121300
2020-01-16Merge release-20200115.0-5-g420d335 (automated)gVisor bot
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