forked from pcwizz/xattr
/
syscall_linux.go
44 lines (39 loc) · 1.3 KB
/
syscall_linux.go
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package xattr
import (
"syscall"
"unsafe"
)
func getxattr(path string, name string, value *byte, size int) (int, error) {
if r0, _, e1 := syscall.Syscall6(syscall.SYS_GETXATTR,
uintptr(unsafe.Pointer(syscall.StringBytePtr(path))),
uintptr(unsafe.Pointer(syscall.StringBytePtr(name))),
uintptr(unsafe.Pointer(value)), uintptr(size), 0, 0); e1 != syscall.Errno(0) {
if e1 == syscall.ENODATA {
return 0, e1
}
return -1, e1
} else {
return int(r0), nil
}
}
func listxattr(path string, namebuf *byte, size int) (int, error) {
if r0, _, e1 := syscall.Syscall(syscall.SYS_LISTXATTR,
uintptr(unsafe.Pointer(syscall.StringBytePtr(path))),
uintptr(unsafe.Pointer(namebuf)),
uintptr(size)); e1 != syscall.Errno(0) {
return -1, e1
} else {
return int(r0), nil
}
}
func setxattr(path string, name string, value *byte, size int) (err error) {
_, _, e1 := syscall.Syscall6(syscall.SYS_SETXATTR,
uintptr(unsafe.Pointer(syscall.StringBytePtr(path))),
uintptr(unsafe.Pointer(syscall.StringBytePtr(name))),
uintptr(unsafe.Pointer(value)), uintptr(size), 0, 0)
return e1
}
func removexattr(path string, name string) (err error) {
_, _, e1 := syscall.Syscall(syscall.SYS_REMOVEXATTR, uintptr(unsafe.Pointer(syscall.StringBytePtr(path))), uintptr(unsafe.Pointer(syscall.StringBytePtr(name))), 0)
return e1
}