FreeBSD source tree https://cgit-dev.freebsd.org/src-test2/atom?h=release%2F7.3.0_cvs 2010-03-21T01:30:13Z 2010-03-21T01:30:13Z Ken Smith kensmith@FreeBSD.org 2010-03-21T01:30:13Z urn:sha1:9c4d1c1956ecb0a222fb2f4579c320391fb67f06 Approved by: re (implicit) This commit was manufactured to restore the state of the 7.3-RELEASE image. 2009-11-04T20:53:35Z John Baldwin jhb@FreeBSD.org 2009-11-04T20:53:35Z urn:sha1:4c11b4fd0b3f7e8f54bd91cd0e7311443489f178 Fix some problems with effective mmap() offsets > 32 bits. This was partially fixed on amd64 earlier. Rather than forcing linux_mmap_common() to use a 32-bit offset, have it accept a 64-bit file offset. This offset is then passed to the real mmap() call. Rather than inventing a structure to hold the normal linux_mmap args that has a 64-bit offset, just pass each of the arguments individually to linux_mmap_common() since that more closes matches the existing style of various kern_foo() functions. 2009-08-27T17:36:59Z Bjoern A. Zeeb bz@FreeBSD.org 2009-08-27T17:36:59Z urn:sha1:f613e8217080c49a8fbf89b40bbc4a0737a7b67c Fix handling of .note.ABI-tag section for GNU systems [1]. Handle GNU/Linux according to LSB Core Specification 4.0, Chapter 11. Object Format, 11.8. ABI note tag. Also check the first word of desc, not only name, according to glibc abi-tags specification to distinguish between Linux and kFreeBSD. Add explicit handling for Debian GNU/kFreeBSD, which runs on our kernels as well [2]. In {amd64,i386}/trap.c, when checking osrel of the current process, also check the ABI to not change the signal behaviour for Linux binary processes, now that we save an osrel version for all three from the lists above in struct proc [2] (slightly different to HEAD). These changes make it possible to run FreeBSD, Debian GNU/kFreeBSD and Linux binaries on the same machine again for at least i386 and amd64, and no longer break kFreeBSD which was detected as GNU(/Linux). PR: kern/135468 Submitted by: dchagin [1] (initial patch) Suggested by: kib [2] Tested by: Petr Salinger (Petr.Salinger seznam.cz) for kFreeBSD Reviewed by: kib 2009-06-17T21:49:41Z Dmitry Chagin dchagin@FreeBSD.org 2009-06-17T21:49:41Z urn:sha1:d57c7139f35b28722d82ee9ff95d37fab73c5b4e Make linux_sendmsg() and linux_recvmsg() work on linux32/amd64. Change types used in the linux' struct msghdr and struct cmsghdr definitions to the properly-sized architecture-specific types. Move ancillary data handler from linux_sendit() to linux_sendmsg(). Approved by: kib (mentor) 2009-06-16T05:10:21Z Dmitry Chagin dchagin@FreeBSD.org 2009-06-16T05:10:21Z urn:sha1:83211503bddce283c23f44f7d254b702ff0b9451 Somewhere between 2.6.23 and 2.6.27, Linux added SOCK_CLOEXEC and SOCK_NONBLOCK flags, that allow to save fcntl() calls. Implement a variation of the socket() syscall which takes a flags in addition to the type argument. Approved by: kib (mentor) 2009-06-10T12:07:52Z Konstantin Belousov kib@FreeBSD.org 2009-06-10T12:07:52Z urn:sha1:6e332b18bf9ee67aa4e9d6531907a979893a7a80 Several threads in a process may do vfork() simultaneously. Then, all parent threads sleep on the parent' struct proc until corresponding child releases the vmspace. Each sleep is interlocked with proc mutex of the child, that triggers assertion in the sleepq_add(). The assertion requires that at any time, all simultaneous sleepers for the channel use the same interlock. Silent the assertion by using conditional variable allocated in the child. Broadcast the variable event on exec() and exit(). MFC r188750: Adapt linux emulation to use cv for vfork wait. 2009-06-06T10:55:11Z Dmitry Chagin dchagin@FreeBSD.org 2009-06-06T10:55:11Z urn:sha1:882b23954db80341c6e0d371be38fddc60946e87 To avoid excessive code duplication move MI definitions to the MI header file. As it is defined in Linux. Approved by: kib (mentor) 2009-06-01T04:44:43Z Dmitry Chagin dchagin@FreeBSD.org 2009-06-01T04:44:43Z urn:sha1:bff285de4a7ddda078a0772175e9b2936b58f60f Move extern variable definitions to the header file. Approved by: kib (mentor) 2009-05-31T06:58:35Z Dmitry Chagin dchagin@FreeBSD.org 2009-05-31T06:58:35Z urn:sha1:55697af2738202647e6800d03aef8ca841cffe4e Reimplement futexes. Old implemention used Giant to protect the kernel data structures, but at the same time called malloc(M_WAITOK), that could cause the calling thread to sleep and lost Giant protection. User-visible result was the missed wakeup. New implementation uses one sx lock per futex. The sx protects the futex structures and allows to sleep while copyin or copyout are performed. Unlike linux, we return EINVAL when FUTEX_CMP_REQUEUE operation is requested and either caller specified futexes are equial or second futex already exists. This is acceptable since the situation can only occur from the application error, and glibc falls back to old FUTEX_WAKE operation when FUTEX_CMP_REQUEUE returns an error. Approved by: kib (mentor) 2009-05-28T18:26:18Z Dmitry Chagin dchagin@FreeBSD.org 2009-05-28T18:26:18Z urn:sha1:a47bd4c2b1d74e74b866d44cda4b841a25356f9b Linux exports HZ value to user space via AT_CLKTCK auxiliary vector entry since 2.4.0. Being exported, AT_CLKTCK is returned by sysconf(_SC_CLK_TCK), glibc falls back to the hard-coded CLK_TCK value when aux entry is not present. Glibc versions prior to 2.2.1 always use hard-coded CLK_TCK value. For older applications/libc's which depends on hard-coded CLK_TCK value user should set compat.linux.osrelease less than 2.4.0. linux_times() shall use the value that is exported to user space. PR: kern/134251 Approved by: kib (mentor)