ceph-csi/vendor/github.com/ceph/go-ceph/errutil/strerror.go
Niels de Vos ba99275f90 dep: add github.com/ceph/go-ceph for rbd API
Signed-off-by: Niels de Vos <ndevos@redhat.com>
2020-03-11 16:09:10 +00:00

46 lines
998 B
Go

/*
Package errutil provides common functions for dealing with error conditions for
all ceph api wrappers.
*/
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
}