git: cc4ffc978668 - main - libsys: don't try to expose yield
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Date: Thu, 07 Mar 2024 01:06:50 UTC
The branch main has been updated by brooks: URL: https://cgit.FreeBSD.org/src/commit/?id=cc4ffc978668cbc9cd58ae7c9e01025a276aa5fd commit cc4ffc978668cbc9cd58ae7c9e01025a276aa5fd Author: Brooks Davis <brooks@FreeBSD.org> AuthorDate: 2024-03-07 01:01:36 +0000 Commit: Brooks Davis <brooks@FreeBSD.org> CommitDate: 2024-03-07 01:01:36 +0000 libsys: don't try to expose yield The undocumented yield system call has never been implemented via libc or libsys (except accidentally for <15 minutes in 1998 between commits abd529cebab9 and 0db2fac06ab7). Avoid trying to export it now to avoid failures when linking with --no-undefined-version. Reviewed by: kib Differential Revision: https://reviews.freebsd.org/D44236 --- lib/libsys/syscalls.map | 2 -- sys/tools/makesyscalls.lua | 4 ++++ 2 files changed, 4 insertions(+), 2 deletions(-) diff --git a/lib/libsys/syscalls.map b/lib/libsys/syscalls.map index b79c512834e0..eeb75dc28a2c 100644 --- a/lib/libsys/syscalls.map +++ b/lib/libsys/syscalls.map @@ -353,8 +353,6 @@ FBSDprivate_1.0 { __sys_aio_cancel; _aio_error; __sys_aio_error; - _yield; - __sys_yield; _mlockall; __sys_mlockall; _munlockall; diff --git a/sys/tools/makesyscalls.lua b/sys/tools/makesyscalls.lua index 8784ff603e81..6f21079d0ebc 100644 --- a/sys/tools/makesyscalls.lua +++ b/sys/tools/makesyscalls.lua @@ -924,6 +924,10 @@ local function handle_noncompat(sysnum, thr_flag, flags, sysflags, rettype, config.syscallprefix, funcalias, sysnum)) write_line("sysmk", string.format(" \\\n\t%s.o", funcalias)) + -- yield has never been exposed as a syscall + if funcalias == "yield" then + return + end if funcalias ~= "exit" and funcalias ~= "vfork" then write_line("libsysmap", string.format("\t_%s;\n", funcalias))