diff options
Diffstat (limited to 'inet/rcmd.c')
| -rw-r--r-- | inet/rcmd.c | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/inet/rcmd.c b/inet/rcmd.c index 4737e6e..42871f7 100644 --- a/inet/rcmd.c +++ b/inet/rcmd.c @@ -464,7 +464,14 @@ rresvport_af(alport, family) #endif ss.ss_family = family; - for (;;) { + /* Ignore invalid values. */ + if (*alport < IPPORT_RESERVED / 2) + *alport = IPPORT_RESERVED / 2; + else if (*alport >= IPPORT_RESERVED) + *alport = IPPORT_RESERVED - 1; + + int start = *alport; + do { *sport = htons((uint16_t) *alport); if (__bind(s, (struct sockaddr *)&ss, len) >= 0) return s; @@ -472,10 +479,9 @@ rresvport_af(alport, family) (void)__close(s); return -1; } - (*alport)--; - if (*alport == IPPORT_RESERVED/2) - break; - } + if ((*alport)-- == IPPORT_RESERVED/2) + *alport = IPPORT_RESERVED - 1; + } while (*alport != start); (void)__close(s); __set_errno (EAGAIN); return -1; |