FreeBSD source tree https://cgit-dev.freebsd.org/src/atom?h=releng%2F10.2 2013-10-01T15:40:27Z 2013-10-01T15:40:27Z Mark Johnston markj@FreeBSD.org 2013-10-01T15:40:27Z urn:sha1:92c6196caadbcb648cd757d5f4b4e0b6426097f9 Reviewed by: rwatson (mac provider) Approved by: re (glebius) MFC after: 1 week 2012-05-05T19:42:38Z Alexander Leidinger netchild@FreeBSD.org 2012-05-05T19:42:38Z urn:sha1:19e252baebe7a7466b33c27560420b7d95fe294d - DTrace scripts to check for errors, performance, ... they serve mostly as examples of what you can do with the static probe;s with moderate load the scripts may be overwhelmed, excessive lock-tracing may influence program behavior (see the last design decission) Design decissions: - use "linuxulator" as the provider for the native bitsize; add the bitsize for the non-native emulation (e.g. "linuxuator32" on amd64) - Add probes only for locks which are acquired in one function and released in another function. Locks which are aquired and released in the same function should be easy to pair in the code, inter-function locking is more easy to verify in DTrace. - Probes for locks should be fired after locking and before releasing to prevent races (to provide data/function stability in DTrace, see the man-page of "dtrace -v ..." and the corresponding DTrace docs). 2011-10-11T13:40:37Z Christian Brueffer brueffer@FreeBSD.org 2011-10-11T13:40:37Z urn:sha1:796fa5e465cf13bd8afab3797d2b55e55b71503f Pointy hat to: brueffer Submitted by: many MFC after: 1 week 2011-10-11T10:32:23Z Christian Brueffer brueffer@FreeBSD.org 2011-10-11T10:32:23Z urn:sha1:05ad7ad6670e5ed85e293ec2ca72e27b89dd6afe CID: 4136 Found with: Coverity Prevent(tm) MFC after: 1 week 2011-09-16T13:58:51Z Kip Macy kmacy@FreeBSD.org 2011-09-16T13:58:51Z urn:sha1:8451d0dd78c0a9c0383485b18aba9f081a9db8bb patch modifies makesyscalls.sh to prefix all of the non-compatibility calls (e.g. not linux_, freebsd32_) with sys_ and updates the kernel entry points and all places in the code that use them. It also fixes an additional name space collision between the kernel function psignal and the libc function of the same name by renaming the kernel psignal kern_psignal(). By introducing this change now we will ease future MFCs that change syscalls. Reviewed by: rwatson Approved by: re (bz) 2010-01-15T07:05:00Z Brooks Davis brooks@FreeBSD.org 2010-01-15T07:05:00Z urn:sha1:3ef5ae2dde5073cbec2288e757f07224d962a46a "ngroups_max + 1", use ">= ngroups_max+1" instead of the equivalent "> ngroups_max" to reduce confusion. 2010-01-12T07:49:34Z Brooks Davis brooks@FreeBSD.org 2010-01-12T07:49:34Z urn:sha1:412f9500e2fd3ae0c7546fefb5823bc207139213 kern.ngroups+1. kern.ngroups can range from NGROUPS_MAX=1023 to INT_MAX-1. Given that the Windows group limit is 1024, this range should be sufficient for most applications. MFC after: 1 month 2009-06-19T17:10:35Z Brooks Davis brooks@FreeBSD.org 2009-06-19T17:10:35Z urn:sha1:838d9858251e9729d0b9c40b9aca89be3e171c1a NGROUPS_MAX, eliminate ABI dependencies on them, and raise the to 1024 and 1023 respectively. (Previously they were equal, but under a close reading of POSIX, NGROUPS_MAX was defined to be too large by 1 since it is the number of supplemental groups, not total number of groups.) The bulk of the change consists of converting the struct ucred member cr_groups from a static array to a pointer. Do the equivalent in kinfo_proc. Introduce new interfaces crcopysafe() and crsetgroups() for duplicating a process credential before modifying it and for setting group lists respectively. Both interfaces take care for the details of allocating groups array. crsetgroups() takes care of truncating the group list to the current maximum (NGROUPS) if necessary. In the future, crsetgroups() may be responsible for insuring invariants such as sorting the supplemental groups to allow groupmember() to be implemented as a binary search. Because we can not change struct xucred without breaking application ABIs, we leave it alone and introduce a new XU_NGROUPS value which is always 16 and is to be used or NGRPS as appropriate for things such as NFS which need to use no more than 16 groups. When feasible, truncate the group list rather than generating an error. Minor changes: - Reduce the number of hand rolled versions of groupmember(). - Do not assign to both cr_gid and cr_groups[0]. - Modify ipfw to cache ucreds instead of part of their contents since they are immutable once referenced by more than one entity. Submitted by: Isilon Systems (initial implementation) X-MFC after: never PR: bin/113398 kern/133867 2008-03-31T12:01:21Z Konstantin Belousov kib@FreeBSD.org 2008-03-31T12:01:21Z urn:sha1:57b4252e45134e588365807eef8462db092e0ffb namei(9). Based on the submission by rdivacky, sponsored by Google Summer of Code 2007 Reviewed by: rwatson, rdivacky Tested by: pho 2007-06-12T00:12:01Z Robert Watson rwatson@FreeBSD.org 2007-06-12T00:12:01Z urn:sha1:32f9753cfbfe844fa6c02c88c7ca96617e903d8e some cases, move to priv_check() if it was an operation on a thread and no other flags were present. Eliminate caller-side jail exception checking (also now-unused); jail privilege exception code now goes solely in kern_jail.c. We can't yet eliminate suser() due to some cases in the KAME code where a privilege check is performed and then used in many different deferred paths. Do, however, move those prototypes to priv.h. Reviewed by: csjp Obtained from: TrustedBSD Project