mirror of https://github.com/ceph/go-ceph
42 lines
889 B
Go
42 lines
889 B
Go
|
package errutil
|
||
|
|
|
||
|
|
/* force XSI-complaint strerror_r() */
|
||
|
|
|
||
|
|
// #define _POSIX_C_SOURCE 200112L
|
||
|
|
// #undef _GNU_SOURCE
|
||
|
|
// #include <stdlib.h>
|
||
|
|
// #include <errno.h>
|
||
|
|
// #include <string.h>
|
||
|
|
import "C"
|
||
|
|
|
||
|
|
import (
|
||
|
|
"unsafe"
|
||
|
|
)
|
||
|
|
|
||
|
|
// FormatErrno returns the absolute value of the errno as well as a string
|
||
|
|
// describing the errno. The string will be empty is the errno is not known.
|
||
|
|
func FormatErrno(errno int) (int, string) {
|
||
|
|
buf := make([]byte, 1024)
|
||
|
|
// strerror expects errno >= 0
|
||
|
|
if errno < 0 {
|
||
|
|
errno = -errno
|
||
|
|
}
|
||
|
|
|
||
|
|
ret := C.strerror_r(
|
||
|
|
C.int(errno),
|
||
|
|
(*C.char)(unsafe.Pointer(&buf[0])),
|
||
|
|
C.size_t(len(buf)))
|
||
|
|
if ret != 0 {
|
||
|
|
return errno, ""
|
||
|
|
}
|
||
|
|
|
||
|
|
return errno, C.GoString((*C.char)(unsafe.Pointer(&buf[0])))
|
||
|
|
}
|
||
|
|
|
||
|
|
// StrError returns a string describing the errno. The string will be empty if
|
||
|
|
// the errno is not known.
|
||
|
|
func StrError(errno int) string {
|
||
|
|
_, s := FormatErrno(errno)
|
||
|
|
return s
|
||
|
|
}
|