Date: Thu, 7 Jul 2005 18:17:56 +0000 (UTC) From: John Baldwin <jhb@FreeBSD.org> To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/lib/libc/sys Makefile.inc read.2 write.2 src/sys/compat/freebsd32 freebsd32_misc.c syscalls.master src/sys/kern sys_generic.c syscalls.master src/sys/sys syscallsubr.h uio.h Message-ID: <200507071817.j67IHuqv081915@repoman.freebsd.org>
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jhb 2005-07-07 18:17:56 UTC
FreeBSD src repository
Modified files:
lib/libc/sys Makefile.inc read.2 write.2
sys/compat/freebsd32 freebsd32_misc.c syscalls.master
sys/kern sys_generic.c syscalls.master
sys/sys syscallsubr.h uio.h
Log:
- Add two new system calls: preadv() and pwritev() which are like readv()
and writev() except that they take an additional offset argument and do
not change the current file position. In SAT speak:
preadv:readv::pread:read and pwritev:writev::pwrite:write.
- Try to reduce code duplication some by merging most of the old
kern_foov() and dofilefoo() functions into new dofilefoo() functions
that are called by kern_foov() and kern_pfoov(). The non-v functions
now all generate a simple uio on the stack from the passed in arguments
and then call kern_foov(). For example, read() now just builds a uio and
calls kern_readv() and pwrite() just builds a uio and calls kern_pwritev().
PR: kern/80362
Submitted by: Marc Olzheim marcolz at stack dot nl (1)
Approved by: re (scottl)
MFC after: 1 week
Revision Changes Path
1.113 +2 -2 src/lib/libc/sys/Makefile.inc
1.30 +25 -8 src/lib/libc/sys/read.2
1.30 +21 -6 src/lib/libc/sys/write.2
1.38 +28 -0 src/sys/compat/freebsd32/freebsd32_misc.c
1.50 +9 -2 src/sys/compat/freebsd32/syscalls.master
1.146 +198 -167 src/sys/kern/sys_generic.c
1.197 +5 -2 src/sys/kern/syscalls.master
1.31 +2 -0 src/sys/sys/syscallsubr.h
1.39 +7 -0 src/sys/sys/uio.h
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