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syscall: implement Mount and Unmount for linux.

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Note that, while the final argument of mount(2) is a void*, in
practice all filesystem implementations treat it as a string
of comma-separated mount options.

R=bradfitzgo, bradfitzwork
CC=golang-dev
https://golang.org/cl/4247070
This commit is contained in:
David Anderson 2011-03-09 05:58:47 -08:00 committed by Brad Fitzpatrick
parent 05660b79ea
commit ad102e143c
8 changed files with 118 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
src/pkg/syscall/mkerrors.sh
View File

@ -26,6 +26,7 @@ includes_Linux='
#include <sys/inotify.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
#include <sys/mount.h>
#include <sys/stat.h>
#include <linux/ptrace.h>
#include <linux/wait.h>
@ -123,6 +124,7 @@ done
$2 == "IFNAMSIZ" ||
$2 == "CTL_NET" ||
$2 == "CTL_MAXNAME" ||
$2 ~ /^(MS|MNT)_/ ||
$2 ~ /^TUN(SET|GET|ATTACH|DETACH)/ ||
$2 ~ /^(O|F|FD|NAME|S|PTRACE)_/ ||
$2 ~ /^LINUX_REBOOT_CMD_/ ||

2
src/pkg/syscall/syscall_linux.go
View File

@ -722,6 +722,7 @@ func Reboot(cmd int) (errno int) {
//sys Mkdirat(dirfd int, path string, mode uint32) (errno int)
//sys Mknod(path string, mode uint32, dev int) (errno int)
//sys Mknodat(dirfd int, path string, mode uint32, dev int) (errno int)
//sys Mount(source string, target string, fstype string, flags int, data string) (errno int)
//sys Nanosleep(time *Timespec, leftover *Timespec) (errno int)
//sys Pause() (errno int)
//sys PivotRoot(newroot string, putold string) (errno int) = SYS_PIVOT_ROOT
@ -747,6 +748,7 @@ func Reboot(cmd int) (errno int) {
//sys Uname(buf *Utsname) (errno int)
//sys Unlink(path string) (errno int)
//sys Unlinkat(dirfd int, path string) (errno int)
//sys Unmount(target string, flags int) (errno int) = SYS_UMOUNT2
//sys Unshare(flags int) (errno int)
//sys Ustat(dev int, ubuf *Ustat_t) (errno int)
//sys Utime(path string, buf *Utimbuf) (errno int)

22
src/pkg/syscall/zerrors_linux_386.go
View File

@ -436,6 +436,9 @@ const (
MAP_TYPE = 0xf
MCL_CURRENT = 0x1
MCL_FUTURE = 0x2
MNT_DETACH = 0x2
MNT_EXPIRE = 0x4
MNT_FORCE = 0x1
MSG_CMSG_CLOEXEC = 0x40000000
MSG_CONFIRM = 0x800
MSG_CTRUNC = 0x8
@ -454,6 +457,22 @@ const (
MSG_TRUNC = 0x20
MSG_TRYHARD = 0x4
MSG_WAITALL = 0x100
MS_ASYNC = 0x1
MS_BIND = 0x1000
MS_INVALIDATE = 0x2
MS_MANDLOCK = 0x40
MS_MGC_MSK = 0xffff0000
MS_MGC_VAL = 0xc0ed0000
MS_NOATIME = 0x400
MS_NODEV = 0x4
MS_NODIRATIME = 0x800
MS_NOEXEC = 0x8
MS_NOSUID = 0x2
MS_RDONLY = 0x1
MS_REMOUNT = 0x20
MS_RMT_MASK = 0xc51
MS_SYNC = 0x4
MS_SYNCHRONOUS = 0x10
NAME_MAX = 0xff
O_ACCMODE = 0x3
O_APPEND = 0x400
@ -712,6 +731,7 @@ const (
SO_TIMESTAMPING = 0x25
SO_TIMESTAMPNS = 0x23
SO_TYPE = 0x3
S_APPEND = 0x100
S_BLKSIZE = 0x200
S_IEXEC = 0x40
S_IFBLK = 0x6000
@ -722,6 +742,7 @@ const (
S_IFMT = 0xf000
S_IFREG = 0x8000
S_IFSOCK = 0xc000
S_IMMUTABLE = 0x200
S_IREAD = 0x100
S_IRGRP = 0x20
S_IROTH = 0x4
@ -739,6 +760,7 @@ const (
S_IXGRP = 0x8
S_IXOTH = 0x1
S_IXUSR = 0x40
S_WRITE = 0x80
TCP_CONGESTION = 0xd
TCP_CORK = 0x3
TCP_DEFER_ACCEPT = 0x9

22
src/pkg/syscall/zerrors_linux_amd64.go
View File

@ -436,6 +436,9 @@ const (
MAP_TYPE = 0xf
MCL_CURRENT = 0x1
MCL_FUTURE = 0x2
MNT_DETACH = 0x2
MNT_EXPIRE = 0x4
MNT_FORCE = 0x1
MSG_CMSG_CLOEXEC = 0x40000000
MSG_CONFIRM = 0x800
MSG_CTRUNC = 0x8
@ -454,6 +457,22 @@ const (
MSG_TRUNC = 0x20
MSG_TRYHARD = 0x4
MSG_WAITALL = 0x100
MS_ASYNC = 0x1
MS_BIND = 0x1000
MS_INVALIDATE = 0x2
MS_MANDLOCK = 0x40
MS_MGC_MSK = 0xffff0000
MS_MGC_VAL = 0xc0ed0000
MS_NOATIME = 0x400
MS_NODEV = 0x4
MS_NODIRATIME = 0x800
MS_NOEXEC = 0x8
MS_NOSUID = 0x2
MS_RDONLY = 0x1
MS_REMOUNT = 0x20
MS_RMT_MASK = 0xc51
MS_SYNC = 0x4
MS_SYNCHRONOUS = 0x10
NAME_MAX = 0xff
O_ACCMODE = 0x3
O_APPEND = 0x400
@ -713,6 +732,7 @@ const (
SO_TIMESTAMPING = 0x25
SO_TIMESTAMPNS = 0x23
SO_TYPE = 0x3
S_APPEND = 0x100
S_BLKSIZE = 0x200
S_IEXEC = 0x40
S_IFBLK = 0x6000
@ -723,6 +743,7 @@ const (
S_IFMT = 0xf000
S_IFREG = 0x8000
S_IFSOCK = 0xc000
S_IMMUTABLE = 0x200
S_IREAD = 0x100
S_IRGRP = 0x20
S_IROTH = 0x4
@ -740,6 +761,7 @@ const (
S_IXGRP = 0x8
S_IXOTH = 0x1
S_IXUSR = 0x40
S_WRITE = 0x80
TCP_CONGESTION = 0xd
TCP_CORK = 0x3
TCP_DEFER_ACCEPT = 0x9

22
src/pkg/syscall/zerrors_linux_arm.go
View File

@ -389,6 +389,25 @@ const (
LINUX_REBOOT_CMD_SW_SUSPEND = 0xd000fce2
LINUX_REBOOT_MAGIC1 = 0xfee1dead
LINUX_REBOOT_MAGIC2 = 0x28121969
MNT_DETACH = 0x2
MNT_EXPIRE = 0x4
MNT_FORCE = 0x1
MS_ASYNC = 0x1
MS_BIND = 0x1000
MS_INVALIDATE = 0x2
MS_MANDLOCK = 0x40
MS_MGC_MSK = 0xffff0000
MS_MGC_VAL = 0xc0ed0000
MS_NOATIME = 0x400
MS_NODEV = 0x4
MS_NODIRATIME = 0x800
MS_NOEXEC = 0x8
MS_NOSUID = 0x2
MS_RDONLY = 0x1
MS_REMOUNT = 0x20
MS_RMT_MASK = 0xc51
MS_SYNC = 0x4
MS_SYNCHRONOUS = 0x10
NAME_MAX = 0xff
O_ACCMODE = 0x3
O_APPEND = 0x400
@ -552,6 +571,7 @@ const (
SO_TIMESTAMPING = 0x25
SO_TIMESTAMPNS = 0x23
SO_TYPE = 0x3
S_APPEND = 0x100
S_BLKSIZE = 0x200
S_IEXEC = 0x40
S_IFBLK = 0x6000
@ -562,6 +582,7 @@ const (
S_IFMT = 0xf000
S_IFREG = 0x8000
S_IFSOCK = 0xc000
S_IMMUTABLE = 0x200
S_IREAD = 0x100
S_IRGRP = 0x20
S_IROTH = 0x4
@ -579,6 +600,7 @@ const (
S_IXGRP = 0x8
S_IXOTH = 0x1
S_IXUSR = 0x40
S_WRITE = 0x80
TCP_CONGESTION = 0xd
TCP_CORK = 0x3
TCP_DEFER_ACCEPT = 0x9

16
src/pkg/syscall/zsyscall_linux_386.go
View File

@ -456,6 +456,14 @@ func Mknodat(dirfd int, path string, mode uint32, dev int) (errno int) {
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Mount(source string, target string, fstype string, flags int, data string) (errno int) {
_, _, e1 := Syscall6(SYS_MOUNT, uintptr(unsafe.Pointer(StringBytePtr(source))), uintptr(unsafe.Pointer(StringBytePtr(target))), uintptr(unsafe.Pointer(StringBytePtr(fstype))), uintptr(flags), uintptr(unsafe.Pointer(StringBytePtr(data))), 0)
errno = int(e1)
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Nanosleep(time *Timespec, leftover *Timespec) (errno int) {
_, _, e1 := Syscall(SYS_NANOSLEEP, uintptr(unsafe.Pointer(time)), uintptr(unsafe.Pointer(leftover)), 0)
errno = int(e1)
@ -684,6 +692,14 @@ func Unlinkat(dirfd int, path string) (errno int) {
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Unmount(target string, flags int) (errno int) {
_, _, e1 := Syscall(SYS_UMOUNT2, uintptr(unsafe.Pointer(StringBytePtr(target))), uintptr(flags), 0)
errno = int(e1)
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Unshare(flags int) (errno int) {
_, _, e1 := Syscall(SYS_UNSHARE, uintptr(flags), 0, 0)
errno = int(e1)

16
src/pkg/syscall/zsyscall_linux_amd64.go
View File

@ -456,6 +456,14 @@ func Mknodat(dirfd int, path string, mode uint32, dev int) (errno int) {
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Mount(source string, target string, fstype string, flags int, data string) (errno int) {
_, _, e1 := Syscall6(SYS_MOUNT, uintptr(unsafe.Pointer(StringBytePtr(source))), uintptr(unsafe.Pointer(StringBytePtr(target))), uintptr(unsafe.Pointer(StringBytePtr(fstype))), uintptr(flags), uintptr(unsafe.Pointer(StringBytePtr(data))), 0)
errno = int(e1)
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Nanosleep(time *Timespec, leftover *Timespec) (errno int) {
_, _, e1 := Syscall(SYS_NANOSLEEP, uintptr(unsafe.Pointer(time)), uintptr(unsafe.Pointer(leftover)), 0)
errno = int(e1)
@ -684,6 +692,14 @@ func Unlinkat(dirfd int, path string) (errno int) {
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Unmount(target string, flags int) (errno int) {
_, _, e1 := Syscall(SYS_UMOUNT2, uintptr(unsafe.Pointer(StringBytePtr(target))), uintptr(flags), 0)
errno = int(e1)
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Unshare(flags int) (errno int) {
_, _, e1 := Syscall(SYS_UNSHARE, uintptr(flags), 0, 0)
errno = int(e1)

16
src/pkg/syscall/zsyscall_linux_arm.go
View File

@ -456,6 +456,14 @@ func Mknodat(dirfd int, path string, mode uint32, dev int) (errno int) {
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Mount(source string, target string, fstype string, flags int, data string) (errno int) {
_, _, e1 := Syscall6(SYS_MOUNT, uintptr(unsafe.Pointer(StringBytePtr(source))), uintptr(unsafe.Pointer(StringBytePtr(target))), uintptr(unsafe.Pointer(StringBytePtr(fstype))), uintptr(flags), uintptr(unsafe.Pointer(StringBytePtr(data))), 0)
errno = int(e1)
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Nanosleep(time *Timespec, leftover *Timespec) (errno int) {
_, _, e1 := Syscall(SYS_NANOSLEEP, uintptr(unsafe.Pointer(time)), uintptr(unsafe.Pointer(leftover)), 0)
errno = int(e1)
@ -684,6 +692,14 @@ func Unlinkat(dirfd int, path string) (errno int) {
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Unmount(target string, flags int) (errno int) {
_, _, e1 := Syscall(SYS_UMOUNT2, uintptr(unsafe.Pointer(StringBytePtr(target))), uintptr(flags), 0)
errno = int(e1)
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Unshare(flags int) (errno int) {
_, _, e1 := Syscall(SYS_UNSHARE, uintptr(flags), 0, 0)
errno = int(e1)