syscall: force O_LARGEFILE in Linux open system call

Fixes #717.

R=adg, PeterGo
CC=golang-dev
https://golang.org/cl/1032041

src/pkg/syscall/mkall.sh

@@ -100,30 +100,36 @@ _* | *_ | _)
 	exit 1
 	;;
 freebsd_386)
+	mkerrors="$mkerrors -f -m32"
 	mksyscall="./mksyscall.sh -l32"
 	mksysnum="./mksysnum_freebsd.sh /usr/src/sys/kern/syscalls.master"
 	mktypes="godefs -gsyscall -f-m32"
 	;;
 freebsd_amd64)
+	mkerrors="$mkerrors -f -m64"
 	mksysnum="./mksysnum_freebsd.sh /usr/src/sys/kern/syscalls.master"
 	mktypes="godefs -gsyscall -f-m64"
 	;;
 darwin_386)
+	mkerrors="$mkerrors -f -m32"
 	mksyscall="./mksyscall.sh -l32"
 	mksysnum="./mksysnum_darwin.sh /home/rsc/pub/xnu-1228/bsd/kern/syscalls.master"
 	mktypes="godefs -gsyscall -f-m32"
 	;;
 darwin_amd64)
+	mkerrors="$mkerrors -f -m64"
 	mksysnum="./mksysnum_darwin.sh /home/rsc/pub/xnu-1228/bsd/kern/syscalls.master"
 	mktypes="godefs -gsyscall -f-m64"
 	mkerrors="./mkerrors.sh"
 	;;
 linux_386)
+	mkerrors="$mkerrors -f -m32"
 	mksyscall="./mksyscall.sh -l32"
 	mksysnum="./mksysnum_linux.sh /usr/include/asm/unistd_32.h"
 	mktypes="godefs -gsyscall -f-m32"
 	;;
 linux_amd64)
+	mkerrors="$mkerrors -f -m64"
 	mksysnum="./mksysnum_linux.sh /usr/include/asm/unistd_64.h"
 	mktypes="godefs -gsyscall -f-m64"
 	;;

src/pkg/syscall/mkerrors.sh

@@ -61,6 +61,18 @@ includes='
 #include <signal.h>
 '
 
+ccflags=""
+next=false
+for i
+do
+	if $next; then
+		ccflags="$ccflags $i"
+		next=false
+	elif [ "$i" = "-f" ]; then
+		next=true
+	fi
+done
+
 # Write godefs input.
 (
 	indirect="includes_$(uname)"
@@ -70,7 +82,7 @@ includes='
 
 	# The gcc command line prints all the #defines
 	# it encounters while processing the input
-	echo "${!indirect} $includes" | $GCC -x c - -E -dM |
+	echo "${!indirect} $includes" | $GCC -x c - -E -dM $ccflags |
 	awk '
 		$1 != "#define" || $2 ~ /\(/ {next}
 		
@@ -94,7 +106,7 @@ includes='
 
 # Pull out just the error names for later.
 errors=$(
-	echo '#include <errno.h>' | $GCC -x c - -E -dM |
+	echo '#include <errno.h>' | $GCC -x c - -E -dM $ccflags |
 	awk '$1=="#define" && $2 ~ /^E[A-Z0-9_]+$/ { print $2 }' |
 	sort
 )
@@ -102,7 +114,7 @@ errors=$(
 echo '// mkerrors.sh' "$@"
 echo '// MACHINE GENERATED BY THE COMMAND ABOVE; DO NOT EDIT'
 echo
-godefs -gsyscall "$@" _const.c
+godefs "$@" -gsyscall "$@" _const.c
 
 # Run C program to print error strings.
 (
@@ -155,4 +167,4 @@ main(void)
 '
 ) >_errors.c
 
-gcc -o _errors _errors.c && ./_errors && rm -f _errors.c _errors _const.c
+gcc $ccflags -o _errors _errors.c && ./_errors && rm -f _errors.c _errors _const.c

src/pkg/syscall/syscall_linux.go

@@ -19,6 +19,11 @@ const OS = "linux"
  * Wrapped
  */
 
+//sys	open(path string, mode int, perm int) (fd int, errno int)
+func Open(path string, mode int, perm int) (fd int, errno int) {
+	return open(path, mode|O_LARGEFILE, perm)
+}
+
 //sys	pipe(p *[2]_C_int) (errno int)
 func Pipe(p []int) (errno int) {
 	if len(p) != 2 {
@@ -576,7 +581,6 @@ func PtraceDetach(pid int) (errno int) { return ptrace(PTRACE_DETACH, pid, 0, 0)
 //sys	Mknod(path string, mode int, dev int) (errno int)
 //sys	Mknodat(dirfd int, path string, mode int, dev int) (errno int)
 //sys	Nanosleep(time *Timespec, leftover *Timespec) (errno int)
-//sys	Open(path string, mode int, perm int) (fd int, errno int)
 //sys	Openat(dirfd int, path string, flags int, mode int) (fd int, errno int)
 //sys	Pause() (errno int)
 //sys	PivotRoot(newroot string, putold string) (errno int) = SYS_PIVOT_ROOT

src/pkg/syscall/zerrors_linux_386.go

-// mkerrors.sh
+// mkerrors.sh -f -m32
 // MACHINE GENERATED BY THE COMMAND ABOVE; DO NOT EDIT
 
-// godefs -gsyscall _const.c
+// godefs -f -m32 -gsyscall -f -m32 _const.c
 
 // MACHINE GENERATED - DO NOT EDIT.
 
@@ -49,6 +49,7 @@ const (
 	EAFNOSUPPORT                     = 0x61
 	EAGAIN                           = 0xb
 	EALREADY                         = 0x72
+	EAX                              = 0x6
 	EBADE                            = 0x34
 	EBADF                            = 0x9
 	EBADFD                           = 0x4d
@@ -57,7 +58,9 @@ const (
 	EBADRQC                          = 0x38
 	EBADSLT                          = 0x39
 	EBFONT                           = 0x3b
+	EBP                              = 0x5
 	EBUSY                            = 0x10
+	EBX                              = 0
 	ECANCELED                        = 0x7d
 	ECHILD                           = 0xa
 	ECHRNG                           = 0x2c
@@ -65,15 +68,19 @@ const (
 	ECONNABORTED                     = 0x67
 	ECONNREFUSED                     = 0x6f
 	ECONNRESET                       = 0x68
+	ECX                              = 0x1
 	EDEADLK                          = 0x23
 	EDEADLOCK                        = 0x23
 	EDESTADDRREQ                     = 0x59
+	EDI                              = 0x4
 	EDOM                             = 0x21
 	EDOTDOT                          = 0x49
 	EDQUOT                           = 0x7a
+	EDX                              = 0x2
 	EEXIST                           = 0x11
 	EFAULT                           = 0xe
 	EFBIG                            = 0x1b
+	EFL                              = 0xe
 	EHOSTDOWN                        = 0x70
 	EHOSTUNREACH                     = 0x71
 	EIDRM                            = 0x2b
@@ -82,6 +89,7 @@ const (
 	EINTR                            = 0x4
 	EINVAL                           = 0x16
 	EIO                              = 0x5
+	EIP                              = 0xc
 	EISCONN                          = 0x6a
 	EISDIR                           = 0x15
 	EISNAM                           = 0x78
@@ -172,7 +180,9 @@ const (
 	EREMOTEIO                        = 0x79
 	ERESTART                         = 0x55
 	EROFS                            = 0x1e
+	ES                               = 0x8
 	ESHUTDOWN                        = 0x6c
+	ESI                              = 0x3
 	ESOCKTNOSUPPORT                  = 0x5e
 	ESPIPE                           = 0x1d
 	ESRCH                            = 0x3
@@ -198,8 +208,8 @@ const (
 	F_GETFD                          = 0x1
 	F_GETFL                          = 0x3
 	F_GETLEASE                       = 0x401
-	F_GETLK                          = 0x5
-	F_GETLK64                        = 0x5
+	F_GETLK                          = 0xc
+	F_GETLK64                        = 0xc
 	F_GETOWN                         = 0x9
 	F_GETSIG                         = 0xb
 	F_LOCK                           = 0x1
@@ -209,10 +219,10 @@ const (
 	F_SETFD                          = 0x2
 	F_SETFL                          = 0x4
 	F_SETLEASE                       = 0x400
-	F_SETLK                          = 0x6
-	F_SETLK64                        = 0x6
-	F_SETLKW                         = 0x7
-	F_SETLKW64                       = 0x7
+	F_SETLK                          = 0xd
+	F_SETLK64                        = 0xd
+	F_SETLKW                         = 0xe
+	F_SETLKW64                       = 0xe
 	F_SETOWN                         = 0x8
 	F_SETSIG                         = 0xa
 	F_SHLCK                          = 0x8
@@ -344,7 +354,7 @@ const (
 	O_DSYNC                          = 0x1000
 	O_EXCL                           = 0x80
 	O_FSYNC                          = 0x1000
-	O_LARGEFILE                      = 0
+	O_LARGEFILE                      = 0x8000
 	O_NDELAY                         = 0x800
 	O_NOATIME                        = 0x40000
 	O_NOCTTY                         = 0x100
@@ -356,7 +366,6 @@ const (
 	O_SYNC                           = 0x1000
 	O_TRUNC                          = 0x200
 	O_WRONLY                         = 0x1
-	PTRACE_ARCH_PRCTL                = 0x1e
 	PTRACE_ATTACH                    = 0x10
 	PTRACE_CONT                      = 0x7
 	PTRACE_DETACH                    = 0x11
@@ -396,6 +405,8 @@ const (
 	PTRACE_SET_THREAD_AREA           = 0x1a
 	PTRACE_SINGLESTEP                = 0x9
 	PTRACE_SYSCALL                   = 0x18
+	PTRACE_SYSEMU                    = 0x1f
+	PTRACE_SYSEMU_SINGLESTEP         = 0x20
 	PTRACE_TRACEME                   = 0
 	SHUT_RD                          = 0
 	SHUT_RDWR                        = 0x2
@@ -540,7 +551,7 @@ const (
 	WNOHANG                          = 0x1
 	WNOTHREAD                        = 0x20000000
 	WNOWAIT                          = 0x1000000
-	WORDSIZE                         = 0x40
+	WORDSIZE                         = 0x20
 	WSTOPPED                         = 0x2
 	WUNTRACED                        = 0x2
 )

src/pkg/syscall/zerrors_linux_amd64.go

-// mkerrors.sh
+// mkerrors.sh -f -m64
 // MACHINE GENERATED BY THE COMMAND ABOVE; DO NOT EDIT
 
-// godefs -gsyscall _const.c
+// godefs -f -m64 -gsyscall -f -m64 _const.c
 
 // MACHINE GENERATED - DO NOT EDIT.
 

src/pkg/syscall/zsyscall_linux_386.go

@@ -5,6 +5,13 @@ package syscall
 
 import "unsafe"
 
+func open(path string, mode int, perm int) (fd int, errno int) {
+	r0, _, e1 := Syscall(SYS_OPEN, uintptr(unsafe.Pointer(StringBytePtr(path))), uintptr(mode), uintptr(perm))
+	fd = int(r0)
+	errno = int(e1)
+	return
+}
+
 func pipe(p *[2]_C_int) (errno int) {
 	_, _, e1 := Syscall(SYS_PIPE, uintptr(unsafe.Pointer(p)), 0, 0)
 	errno = int(e1)
@@ -314,13 +321,6 @@ func Nanosleep(time *Timespec, leftover *Timespec) (errno int) {
 	return
 }
 
-func Open(path string, mode int, perm int) (fd int, errno int) {
-	r0, _, e1 := Syscall(SYS_OPEN, uintptr(unsafe.Pointer(StringBytePtr(path))), uintptr(mode), uintptr(perm))
-	fd = int(r0)
-	errno = int(e1)
-	return
-}
-
 func Openat(dirfd int, path string, flags int, mode int) (fd int, errno int) {
 	r0, _, e1 := Syscall6(SYS_OPENAT, uintptr(dirfd), uintptr(unsafe.Pointer(StringBytePtr(path))), uintptr(flags), uintptr(mode), 0, 0)
 	fd = int(r0)

src/pkg/syscall/zsyscall_linux_amd64.go

@@ -5,6 +5,13 @@ package syscall
 
 import "unsafe"
 
+func open(path string, mode int, perm int) (fd int, errno int) {
+	r0, _, e1 := Syscall(SYS_OPEN, uintptr(unsafe.Pointer(StringBytePtr(path))), uintptr(mode), uintptr(perm))
+	fd = int(r0)
+	errno = int(e1)
+	return
+}
+
 func pipe(p *[2]_C_int) (errno int) {
 	_, _, e1 := Syscall(SYS_PIPE, uintptr(unsafe.Pointer(p)), 0, 0)
 	errno = int(e1)
@@ -314,13 +321,6 @@ func Nanosleep(time *Timespec, leftover *Timespec) (errno int) {
 	return
 }
 
-func Open(path string, mode int, perm int) (fd int, errno int) {
-	r0, _, e1 := Syscall(SYS_OPEN, uintptr(unsafe.Pointer(StringBytePtr(path))), uintptr(mode), uintptr(perm))
-	fd = int(r0)
-	errno = int(e1)
-	return
-}
-
 func Openat(dirfd int, path string, flags int, mode int) (fd int, errno int) {
 	r0, _, e1 := Syscall6(SYS_OPENAT, uintptr(dirfd), uintptr(unsafe.Pointer(StringBytePtr(path))), uintptr(flags), uintptr(mode), 0, 0)
 	fd = int(r0)