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syscall: fix fsync for read-only files on aix

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AIX fsync syscall doesn't work on read-only files. Using fsync_range
instead allows syscall.Fsync to work on any files.

Fixes #41372

Change-Id: I66d33e847875496af53da60828c1bddf6c2b76b7
Reviewed-on: https://go-review.googlesource.com/c/go/+/254657
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
This commit is contained in:
Clément Chigot 2020-09-14 13:06:40 +02:00 committed by Ian Lance Taylor
parent 4f5cd0c033
commit 86dbeefe1f
2 changed files with 18 additions and 14 deletions
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6
src/syscall/syscall_aix.go
View File

@ -214,6 +214,11 @@ func Wait4(pid int, wstatus *WaitStatus, options int, rusage *Rusage) (wpid int,
return
}
//sys fsyncRange(fd int, how int, start int64, length int64) (err error) = fsync_range
func Fsync(fd int) error {
return fsyncRange(fd, O_SYNC, 0, 0)
}
/*
* Socket
*/
@ -600,7 +605,6 @@ func PtraceDetach(pid int) (err error) { return ptrace64(PT_DETACH, int64(pid),
//sys Fstat(fd int, stat *Stat_t) (err error)
//sys Fstatfs(fd int, buf *Statfs_t) (err error)
//sys Ftruncate(fd int, length int64) (err error)
//sys Fsync(fd int) (err error)
//sysnb Getgid() (gid int)
//sysnb Getpid() (pid int)
//sys Geteuid() (euid int)

26
src/syscall/zsyscall_aix_ppc64.go
View File

@ -19,6 +19,7 @@ import "unsafe"
//go:cgo_import_dynamic libc_setgroups setgroups "libc.a/shr_64.o"
//go:cgo_import_dynamic libc_getdirent getdirent "libc.a/shr_64.o"
//go:cgo_import_dynamic libc_wait4 wait4 "libc.a/shr_64.o"
//go:cgo_import_dynamic libc_fsync_range fsync_range "libc.a/shr_64.o"
//go:cgo_import_dynamic libc_bind bind "libc.a/shr_64.o"
//go:cgo_import_dynamic libc_connect connect "libc.a/shr_64.o"
//go:cgo_import_dynamic libc_Getkerninfo getkerninfo "libc.a/shr_64.o"
@ -54,7 +55,6 @@ import "unsafe"
//go:cgo_import_dynamic libc_Fstat fstat "libc.a/shr_64.o"
//go:cgo_import_dynamic libc_Fstatfs fstatfs "libc.a/shr_64.o"
//go:cgo_import_dynamic libc_Ftruncate ftruncate "libc.a/shr_64.o"
//go:cgo_import_dynamic libc_Fsync fsync "libc.a/shr_64.o"
//go:cgo_import_dynamic libc_Getgid getgid "libc.a/shr_64.o"
//go:cgo_import_dynamic libc_Getpid getpid "libc.a/shr_64.o"
//go:cgo_import_dynamic libc_Geteuid geteuid "libc.a/shr_64.o"
@ -111,6 +111,7 @@ import "unsafe"
//go:linkname libc_setgroups libc_setgroups
//go:linkname libc_getdirent libc_getdirent
//go:linkname libc_wait4 libc_wait4
//go:linkname libc_fsync_range libc_fsync_range
//go:linkname libc_bind libc_bind
//go:linkname libc_connect libc_connect
//go:linkname libc_Getkerninfo libc_Getkerninfo
@ -146,7 +147,6 @@ import "unsafe"
//go:linkname libc_Fstat libc_Fstat
//go:linkname libc_Fstatfs libc_Fstatfs
//go:linkname libc_Ftruncate libc_Ftruncate
//go:linkname libc_Fsync libc_Fsync
//go:linkname libc_Getgid libc_Getgid
//go:linkname libc_Getpid libc_Getpid
//go:linkname libc_Geteuid libc_Geteuid
@ -206,6 +206,7 @@ var (
libc_setgroups,
libc_getdirent,
libc_wait4,
libc_fsync_range,
libc_bind,
libc_connect,
libc_Getkerninfo,
@ -241,7 +242,6 @@ var (
libc_Fstat,
libc_Fstatfs,
libc_Ftruncate,
libc_Fsync,
libc_Getgid,
libc_Getpid,
libc_Geteuid,
@ -442,6 +442,16 @@ func wait4(pid _Pid_t, status *_C_int, options int, rusage *Rusage) (wpid _Pid_t
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func fsyncRange(fd int, how int, start int64, length int64) (err error) {
_, _, e1 := syscall6(uintptr(unsafe.Pointer(&libc_fsync_range)), 4, uintptr(fd), uintptr(how), uintptr(start), uintptr(length), 0, 0)
if e1 != 0 {
err = errnoErr(e1)
}
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func bind(s int, addr unsafe.Pointer, addrlen _Socklen) (err error) {
_, _, e1 := syscall6(uintptr(unsafe.Pointer(&libc_bind)), 3, uintptr(s), uintptr(addr), uintptr(addrlen), 0, 0, 0)
if e1 != 0 {
@ -854,16 +864,6 @@ func Ftruncate(fd int, length int64) (err error) {
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Fsync(fd int) (err error) {
_, _, e1 := syscall6(uintptr(unsafe.Pointer(&libc_Fsync)), 1, uintptr(fd), 0, 0, 0, 0, 0)
if e1 != 0 {
err = errnoErr(e1)
}
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Getgid() (gid int) {
r0, _, _ := rawSyscall6(uintptr(unsafe.Pointer(&libc_Getgid)), 0, 0, 0, 0, 0, 0, 0)
gid = int(r0)