Package: libc6 Version: 2.7-6 Severity: normal
Functions that require *errnop for the error, sometimes restores the errno to it's original state before returning. If they are given errnop = &errno, then they reset errno, and thus errnop also gets reset and no error is reported. My example is getgrnam with hesiod. getgrnam calls getgrnam_r with initial buffer of 1024. If it gets ERANGE it doubles the buffer. The problem is that _nss_hesiod_getgrnam_r is (eventually) called with errnop = &errno. So errnop is set to ERANGE as it should, but before it returns, it calls __set_errno(olderr) (hesiod/nss_hesiod/hesiod-grp.c:92) which also sets errnop to olderr. As a result errnop != ERANGE, and getgrnam_r (and later getgrnam) fails with errno = SUCCESS (or, in other words, users that belong to large groups, can't login). To locally fix the problem, I conditioned the __set_errno to: if (errnop != &errno) __set_errno(olderr); This is a local fix, and though it works, I really think that functions that get *errnop as a parameter, shouldn't get it as &errno. -- System Information: Debian Release: lenny/sid APT prefers testing APT policy: (990, 'testing'), (500, 'unstable'), (500, 'stable'), (1, 'experimental') Architecture: i386 (i686) Kernel: Linux 2.6.24.2mos-2 (SMP w/2 CPU cores) Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/bash Versions of packages libc6 depends on: ii libgcc1 1:4.3-20080202-1 GCC support library libc6 recommends no packages. -- no debconf information -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
