diff options
Diffstat (limited to 'vendor/golang.org/x/sys/unix/syscall_linux.go')
| -rw-r--r-- | vendor/golang.org/x/sys/unix/syscall_linux.go | 28 |
1 files changed, 18 insertions, 10 deletions
diff --git a/vendor/golang.org/x/sys/unix/syscall_linux.go b/vendor/golang.org/x/sys/unix/syscall_linux.go index a5e1c10e3..0f85e29e6 100644 --- a/vendor/golang.org/x/sys/unix/syscall_linux.go +++ b/vendor/golang.org/x/sys/unix/syscall_linux.go @@ -61,15 +61,23 @@ func FanotifyMark(fd int, flags uint, mask uint64, dirFd int, pathname string) ( } //sys fchmodat(dirfd int, path string, mode uint32) (err error) - -func Fchmodat(dirfd int, path string, mode uint32, flags int) (err error) { - // Linux fchmodat doesn't support the flags parameter. Mimick glibc's behavior - // and check the flags. Otherwise the mode would be applied to the symlink - // destination which is not what the user expects. - if flags&^AT_SYMLINK_NOFOLLOW != 0 { - return EINVAL - } else if flags&AT_SYMLINK_NOFOLLOW != 0 { - return EOPNOTSUPP +//sys fchmodat2(dirfd int, path string, mode uint32, flags int) (err error) + +func Fchmodat(dirfd int, path string, mode uint32, flags int) error { + // Linux fchmodat doesn't support the flags parameter, but fchmodat2 does. + // Try fchmodat2 if flags are specified. + if flags != 0 { + err := fchmodat2(dirfd, path, mode, flags) + if err == ENOSYS { + // fchmodat2 isn't available. If the flags are known to be valid, + // return EOPNOTSUPP to indicate that fchmodat doesn't support them. + if flags&^(AT_SYMLINK_NOFOLLOW|AT_EMPTY_PATH) != 0 { + return EINVAL + } else if flags&(AT_SYMLINK_NOFOLLOW|AT_EMPTY_PATH) != 0 { + return EOPNOTSUPP + } + } + return err } return fchmodat(dirfd, path, mode) } @@ -1302,7 +1310,7 @@ func GetsockoptString(fd, level, opt int) (string, error) { return "", err } } - return string(buf[:vallen-1]), nil + return ByteSliceToString(buf[:vallen]), nil } func GetsockoptTpacketStats(fd, level, opt int) (*TpacketStats, error) { |