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[src/trunk]: src/sys/compat/linux32/common Add preadv(2) and pwritev(2) syste...



details:   https://anonhg.NetBSD.org/src/rev/ca1883b88420
branches:  trunk
changeset: 1023652:ca1883b88420
user:      thorpej <thorpej%NetBSD.org@localhost>
date:      Mon Sep 20 02:20:02 2021 +0000

description:
Add preadv(2) and pwritev(2) system calls to COMPAT_LINUX and COMPAT_LINUX32.

diffstat:

 sys/compat/linux/arch/alpha/syscalls.master   |  10 ++-
 sys/compat/linux/arch/amd64/syscalls.master   |  10 ++-
 sys/compat/linux/arch/arm/syscalls.master     |  10 ++-
 sys/compat/linux/arch/i386/syscalls.master    |  10 ++-
 sys/compat/linux/arch/m68k/syscalls.master    |  10 ++-
 sys/compat/linux/arch/mips/syscalls.master    |  10 ++-
 sys/compat/linux/arch/powerpc/syscalls.master |  10 ++-
 sys/compat/linux/common/linux_file.c          |  71 ++++++++++++++++++++++++++-
 sys/compat/linux32/arch/amd64/syscalls.master |  10 ++-
 sys/compat/linux32/common/linux32_misc.c      |  54 +++++++++++++++++++-
 10 files changed, 177 insertions(+), 28 deletions(-)

diffs (truncated from 363 to 300 lines):

diff -r bd096e1b981b -r ca1883b88420 sys/compat/linux/arch/alpha/syscalls.master
--- a/sys/compat/linux/arch/alpha/syscalls.master       Mon Sep 20 01:07:56 2021 +0000
+++ b/sys/compat/linux/arch/alpha/syscalls.master       Mon Sep 20 02:20:02 2021 +0000
@@ -1,4 +1,4 @@
-       $NetBSD: syscalls.master,v 1.100 2021/09/20 00:09:01 thorpej Exp $
+       $NetBSD: syscalls.master,v 1.101 2021/09/20 02:20:02 thorpej Exp $
 ;
 ;      @(#)syscalls.master     8.1 (Berkeley) 7/19/93
 
@@ -784,8 +784,12 @@
 487    STD             { int|linux_sys||dup3(int from, int to, int flags); }
 488    STD             { int|linux_sys||pipe2(int *pfds, int flags); }
 489    UNIMPL          inotify_init1
-490    UNIMPL          preadv
-491    UNIMPL          pwritev
+490    STD             { int|linux_sys||preadv(int fd, \
+                           const struct iovec *iovp, int iovcnt, \
+                           unsigned long off_lo, unsigned long off_hi); }
+491    STD             { int|linux_sys||pwritev(int fd, \
+                           const struct iovcnt *iovp, int iovcnt, \
+                           unsigned long off_lo, unsigned long off_hi); }
 492    UNIMPL          rt_tgsigqueueinfo
 493    UNIMPL          perf_counter_open
 494    UNIMPL          fanotify_init
diff -r bd096e1b981b -r ca1883b88420 sys/compat/linux/arch/amd64/syscalls.master
--- a/sys/compat/linux/arch/amd64/syscalls.master       Mon Sep 20 01:07:56 2021 +0000
+++ b/sys/compat/linux/arch/amd64/syscalls.master       Mon Sep 20 02:20:02 2021 +0000
@@ -1,4 +1,4 @@
-       $NetBSD: syscalls.master,v 1.65 2021/09/20 00:09:01 thorpej Exp $
+       $NetBSD: syscalls.master,v 1.66 2021/09/20 02:20:02 thorpej Exp $
 
 ;      @(#)syscalls.master     8.1 (Berkeley) 7/19/93
 
@@ -539,8 +539,12 @@
 292    STD             { int|linux_sys||dup3(int from, int to, int flags); }
 293    STD             { int|linux_sys||pipe2(int *pfds, int flags); }
 294    UNIMPL          inotify_init1
-295    UNIMPL          preadv
-296    UNIMPL          pwritev
+295    STD             { int|linux_sys||preadv(int fd, \
+                           const struct iovec *iovp, int iovcnt, \
+                           unsigned long off_lo, unsigned long off_hi); }
+296    STD             { int|linux_sys||pwritev(int fd, \
+                           const struct iovcnt *iovp, int iovcnt, \
+                           unsigned long off_lo, unsigned long off_hi); }
 297    UNIMPL          rt_tgsigqueueinfo
 298    UNIMPL          perf_counter_open
 299    STD             { int|linux_sys||recvmmsg(int s, \
diff -r bd096e1b981b -r ca1883b88420 sys/compat/linux/arch/arm/syscalls.master
--- a/sys/compat/linux/arch/arm/syscalls.master Mon Sep 20 01:07:56 2021 +0000
+++ b/sys/compat/linux/arch/arm/syscalls.master Mon Sep 20 02:20:02 2021 +0000
@@ -1,4 +1,4 @@
-       $NetBSD: syscalls.master,v 1.72 2021/09/20 00:09:01 thorpej Exp $
+       $NetBSD: syscalls.master,v 1.73 2021/09/20 02:20:02 thorpej Exp $
 
 ; Derived from sys/compat/linux/arch/*/syscalls.master
 ; and from Linux 2.4.12 arch/arm/kernel/calls.S
@@ -579,8 +579,12 @@
 358    STD             { int|linux_sys||dup3(int from, int to, int flags); }
 359    STD             { int|linux_sys||pipe2(int *pfds, int flags); }
 360    UNIMPL          inotify_init1
-361    UNIMPL          preadv
-362    UNIMPL          pwritev
+361    STD             { int|linux_sys||preadv(int fd, \
+                           const struct iovec *iovp, int iovcnt, \
+                           unsigned long off_lo, unsigned long off_hi); }
+362    STD             { int|linux_sys||pwritev(int fd, \
+                           const struct iovcnt *iovp, int iovcnt, \
+                           unsigned long off_lo, unsigned long off_hi); }
 363    UNIMPL          rt_tgsigqueueinfo
 364    UNIMPL          perf_counter_open
 365    STD             { int|linux_sys||recvmmsg(int s, \
diff -r bd096e1b981b -r ca1883b88420 sys/compat/linux/arch/i386/syscalls.master
--- a/sys/compat/linux/arch/i386/syscalls.master        Mon Sep 20 01:07:56 2021 +0000
+++ b/sys/compat/linux/arch/i386/syscalls.master        Mon Sep 20 02:20:02 2021 +0000
@@ -1,4 +1,4 @@
-       $NetBSD: syscalls.master,v 1.127 2021/09/20 00:09:01 thorpej Exp $
+       $NetBSD: syscalls.master,v 1.128 2021/09/20 02:20:02 thorpej Exp $
 
 ;      @(#)syscalls.master     8.1 (Berkeley) 7/19/93
 
@@ -546,8 +546,12 @@
 330     STD             { int|linux_sys||dup3(int from, int to, int flags); }
 331     STD             { int|linux_sys||pipe2( int *pfds, int flags); }
 332    UNIMPL          inotify_init1
-333    UNIMPL          preadv
-334    UNIMPL          pwritev
+333    STD             { int|linux_sys||preadv(int fd, \
+                           const struct iovec *iovp, int iovcnt, \
+                           unsigned long off_lo, unsigned long off_hi); }
+334    STD             { int|linux_sys||pwritev(int fd, \
+                           const struct iovcnt *iovp, int iovcnt, \
+                           unsigned long off_lo, unsigned long off_hi); }
 335    UNIMPL          rt_tgsigqueueinfo
 336    UNIMPL          perf_counter_open
 337    UNIMPL          recvmmsg
diff -r bd096e1b981b -r ca1883b88420 sys/compat/linux/arch/m68k/syscalls.master
--- a/sys/compat/linux/arch/m68k/syscalls.master        Mon Sep 20 01:07:56 2021 +0000
+++ b/sys/compat/linux/arch/m68k/syscalls.master        Mon Sep 20 02:20:02 2021 +0000
@@ -1,4 +1,4 @@
-       $NetBSD: syscalls.master,v 1.98 2021/09/20 00:09:01 thorpej Exp $
+       $NetBSD: syscalls.master,v 1.99 2021/09/20 02:20:02 thorpej Exp $
 
 ;      @(#)syscalls.master     8.1 (Berkeley) 7/19/93
 
@@ -564,8 +564,12 @@
 326    STD             { int|linux_sys||dup3(int from, int to, int flags); }
 327    STD             { int|linux_sys||pipe2(int *pfds, int flags); }
 328    UNIMPL          inotify_init1
-329    UNIMPL          preadv
-330    UNIMPL          pwritev
+329    STD             { int|linux_sys||preadv(int fd, \
+                           const struct iovec *iovp, int iovcnt, \
+                           unsigned long off_lo, unsigned long off_hi); }
+330    STD             { int|linux_sys||pwritev(int fd, \
+                           const struct iovcnt *iovp, int iovcnt, \
+                           unsigned long off_lo, unsigned long off_hi); }
 331    UNIMPL          rt_tgsigqueueinfo
 332    UNIMPL          perf_counter_open
 333    UNIMPL          set_thread_area
diff -r bd096e1b981b -r ca1883b88420 sys/compat/linux/arch/mips/syscalls.master
--- a/sys/compat/linux/arch/mips/syscalls.master        Mon Sep 20 01:07:56 2021 +0000
+++ b/sys/compat/linux/arch/mips/syscalls.master        Mon Sep 20 02:20:02 2021 +0000
@@ -1,4 +1,4 @@
-       $NetBSD: syscalls.master,v 1.71 2021/09/20 00:09:01 thorpej Exp $  
+       $NetBSD: syscalls.master,v 1.72 2021/09/20 02:20:02 thorpej Exp $  
 
 ;      @(#)syscalls.master     8.1 (Berkeley) 7/19/93
 
@@ -553,8 +553,12 @@
 327    STD             { int|linux_sys||dup3(int from, int to, int flags); }
 328    STD             { int|linux_sys||pipe2(int *pfds, int flags); }
 329    UNIMPL          inotify_init1
-330    UNIMPL          preadv
-331    UNIMPL          pwritev
+330    STD             { int|linux_sys||preadv(int fd, \
+                           const struct iovec *iovp, int iovcnt, \
+                           unsigned long off_lo, unsigned long off_hi); }
+331    STD             { int|linux_sys||pwritev(int fd, \
+                           const struct iovcnt *iovp, int iovcnt, \
+                           unsigned long off_lo, unsigned long off_hi); }
 332    UNIMPL          rt_tgsigqueueinfo
 333    UNIMPL          perf_event_open
 334    STD             { int|linux_sys||accept4(int s, \
diff -r bd096e1b981b -r ca1883b88420 sys/compat/linux/arch/powerpc/syscalls.master
--- a/sys/compat/linux/arch/powerpc/syscalls.master     Mon Sep 20 01:07:56 2021 +0000
+++ b/sys/compat/linux/arch/powerpc/syscalls.master     Mon Sep 20 02:20:02 2021 +0000
@@ -1,4 +1,4 @@
-       $NetBSD: syscalls.master,v 1.77 2021/09/20 00:09:01 thorpej Exp $  
+       $NetBSD: syscalls.master,v 1.78 2021/09/20 02:20:02 thorpej Exp $  
 
 ;      @(#)syscalls.master     8.1 (Berkeley) 7/19/93
 
@@ -553,8 +553,12 @@
 317    STD             { int|linux_sys||pipe2(int *pfds, int flags); }
 318    UNIMPL          inotify_init1
 319    UNIMPL          perf_event_open
-320    UNIMPL          preadv
-321    UNIMPL          pwritev
+320    STD             { int|linux_sys||preadv(int fd, \
+                           const struct iovec *iovp, int iovcnt, \
+                           unsigned long off_lo, unsigned long off_hi); }
+321    STD             { int|linux_sys||pwritev(int fd, \
+                           const struct iovcnt *iovp, int iovcnt, \
+                           unsigned long off_lo, unsigned long off_hi); }
 322    UNIMPL          rt_tgsigqueueinfo
 323    UNIMPL          fanotify_init
 324    UNIMPL          fanotify_mark
diff -r bd096e1b981b -r ca1883b88420 sys/compat/linux/common/linux_file.c
--- a/sys/compat/linux/common/linux_file.c      Mon Sep 20 01:07:56 2021 +0000
+++ b/sys/compat/linux/common/linux_file.c      Mon Sep 20 02:20:02 2021 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: linux_file.c,v 1.119 2021/09/07 11:43:04 riastradh Exp $       */
+/*     $NetBSD: linux_file.c,v 1.120 2021/09/20 02:20:03 thorpej Exp $ */
 
 /*-
  * Copyright (c) 1995, 1998, 2008 The NetBSD Foundation, Inc.
@@ -35,7 +35,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: linux_file.c,v 1.119 2021/09/07 11:43:04 riastradh Exp $");
+__KERNEL_RCSID(0, "$NetBSD: linux_file.c,v 1.120 2021/09/20 02:20:03 thorpej Exp $");
 
 #include <sys/param.h>
 #include <sys/systm.h>
@@ -136,6 +136,23 @@
        return res;
 }
 
+static inline off_t
+linux_hilo_to_off_t(unsigned long hi, unsigned long lo)
+{
+#ifdef _LP64
+       /*
+        * Linux discards the "hi" portion on LP64 platforms; even though
+        * glibc puts of the upper 32-bits of the offset into the "hi"
+        * argument regardless, the "lo" argument has all the bits in
+        * this case.
+        */
+       (void) hi; 
+       return (off_t)lo;
+#else
+       return (((off_t)hi) << 32) | lo;
+#endif /* _LP64 */
+}
+
 /*
  * creat(2) is an obsolete function, but it's present as a Linux
  * system call, so let's deal with it.
@@ -785,6 +802,56 @@
        return sys_pwrite(l, &pra, retval);
 }
 
+/*
+ * preadv(2)
+ */
+int
+linux_sys_preadv(struct lwp *l, const struct linux_sys_preadv_args *uap,
+    register_t *retval)
+{
+       /* {
+               syscallarg(int) fd;
+               syscallarg(const struct iovec *) iovp;
+               syscallarg(int) iovcnt;
+               syscallarg(unsigned long) off_lo;
+               syscallarg(unsigned long) off_hi;
+       } */
+       struct sys_preadv_args ua;
+
+       SCARG(&ua, fd) = SCARG(uap, fd);
+       SCARG(&ua, iovp) = SCARG(uap, iovp);
+       SCARG(&ua, iovcnt) = SCARG(uap, iovcnt);
+       SCARG(&ua, PAD) = 0;
+       SCARG(&ua, offset) = linux_hilo_to_off_t(SCARG(uap, off_hi),
+                                                SCARG(uap, off_lo));
+       return sys_preadv(l, &ua, retval);
+}
+
+/*
+ * pwritev(2)
+ */
+int
+linux_sys_pwritev(struct lwp *l, const struct linux_sys_pwritev_args *uap,
+    register_t *retval)
+{
+       /* {
+               syscallarg(int) fd;
+               syscallarg(const struct iovec *) iovp;
+               syscallarg(int) iovcnt;
+               syscallarg(unsigned long) off_lo;
+               syscallarg(unsigned long) off_hi;
+       } */
+       struct sys_pwritev_args ua;
+
+       SCARG(&ua, fd) = SCARG(uap, fd);
+       SCARG(&ua, iovp) = (const void *)SCARG(uap, iovp);
+       SCARG(&ua, iovcnt) = SCARG(uap, iovcnt);
+       SCARG(&ua, PAD) = 0;
+       SCARG(&ua, offset) = linux_hilo_to_off_t(SCARG(uap, off_hi),
+                                                SCARG(uap, off_lo));
+       return sys_pwritev(l, &ua, retval);
+}
+
 int
 linux_sys_dup3(struct lwp *l, const struct linux_sys_dup3_args *uap,
     register_t *retval)
diff -r bd096e1b981b -r ca1883b88420 sys/compat/linux32/arch/amd64/syscalls.master
--- a/sys/compat/linux32/arch/amd64/syscalls.master     Mon Sep 20 01:07:56 2021 +0000
+++ b/sys/compat/linux32/arch/amd64/syscalls.master     Mon Sep 20 02:20:02 2021 +0000
@@ -1,4 +1,4 @@
-       $NetBSD: syscalls.master,v 1.74 2021/09/20 00:09:02 thorpej Exp $
+       $NetBSD: syscalls.master,v 1.75 2021/09/20 02:20:03 thorpej Exp $
 
 ; NetBSD i386 COMPAT_LINUX32 system call name/number "master" file.
 ; (See syscalls.conf to see what it is processed into.)
@@ -567,8 +567,12 @@
 330    STD     { int|linux32_sys||dup3(int from, int to, int flags); }
 331     STD    { int|linux32_sys||pipe2(netbsd32_intp fd, int flags); }
 332    UNIMPL  inotify_init1
-333    UNIMPL  preadv
-334    UNIMPL  pwritev
+333    STD     { int|linux32_sys||preadv(int fd, \
+                   const netbsd32_iovecp_t iovp, int iovcnt, \
+                   netbsd32_u_long off_lo, netbsd32_u_long off_hi); }
+334    STD     { int|linux32_sys||pwritev(int fd, \
+                   const netbsd32_iovecp_t iovp, int iovcnt, \
+                   netbsd32_u_long off_lo, netbsd32_u_long off_hi); }
 335    UNIMPL  rt_tgsigqueueinfo
 336    UNIMPL  perf_counter_open
 337    UNIMPL  recvmmsg
diff -r bd096e1b981b -r ca1883b88420 sys/compat/linux32/common/linux32_misc.c
--- a/sys/compat/linux32/common/linux32_misc.c  Mon Sep 20 01:07:56 2021 +0000
+++ b/sys/compat/linux32/common/linux32_misc.c  Mon Sep 20 02:20:02 2021 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: linux32_misc.c,v 1.32 2021/09/20 00:09:02 thorpej Exp $        */
+/*     $NetBSD: linux32_misc.c,v 1.33 2021/09/20 02:20:03 thorpej Exp $        */
 
 /*-
  * Copyright (c) 1995, 1998, 1999 The NetBSD Foundation, Inc.



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