From: Paul Eggert Date: Wed, 13 Nov 2013 15:51:40 +0000 (-0800) Subject: * lib/getgroups.c (posix_getgroups, getgroups) [__APPLE__]: X-Git-Tag: snapshot-start~38 X-Git-Url: http://erislabs.net/gitweb/?p=gnulib.git;a=commitdiff_plain;h=b0f648cf3ba46b06c44bf84ec74480a42f8666ba * lib/getgroups.c (posix_getgroups, getgroups) [__APPLE__]: New function and macro, to work around _DARWIN_C_SOURCE problem. Reported by Jack Howarth in . --- diff --git a/ChangeLog b/ChangeLog index 59de3e573..aae8c64d1 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,9 @@ +2013-11-13 Paul Eggert + + * lib/getgroups.c (posix_getgroups, getgroups) [__APPLE__]: + New function and macro, to work around _DARWIN_C_SOURCE problem. + Reported by Jack Howarth in . + 2013-11-11 Pádraig Brady base64: provide a fast path for encoding well sized buffers diff --git a/lib/getgroups.c b/lib/getgroups.c index e71b5439c..62234d975 100644 --- a/lib/getgroups.c +++ b/lib/getgroups.c @@ -43,6 +43,21 @@ getgroups (int n _GL_UNUSED, GETGROUPS_T *groups _GL_UNUSED) # define GETGROUPS_ZERO_BUG 0 # endif +/* On OS X 10.6 and later, use the usual getgroups, not the one + supplied when _DARWIN_C_SOURCE is defined. _DARWIN_C_SOURCE is + normally defined, since it means "conform to POSIX, but add + non-POSIX extensions even if that violates the POSIX namespace + rules", which is what we normally want. But with getgroups there + is an inconsistency, and _DARWIN_C_SOURCE means "change getgroups() + so that it no longer works right". The BUGS section of compat(5) + says that the behavior is dubious if you compile different sections + of a program with different _DARWIN_C_SOURCE settings, so fix only + the offending symbol. */ +#ifdef __APPLE__ +int posix_getgroups (int, gid_t []) __asm ("_getgroups"); +# define getgroups posix_getgroups +#endif + /* On at least Ultrix 4.3 and NextStep 3.2, getgroups (0, NULL) always fails. On other systems, it returns the number of supplemental groups for the process. This function handles that special case