Subordinate IDs require 32bit uid_t/gid_t
* configure.in: Check if sizeof uid_t and gid_t is larger than 32 bit to support subordinate IDs.
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@ -1,3 +1,8 @@
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2013-08-13 Nicolas François <nicolas.francois@centraliens.net>
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* configure.in: Check if sizeof uid_t and gid_t is larger than 32
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bit to support subordinate IDs.
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2013-08-13 Nicolas François <nicolas.francois@centraliens.net>
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* lib/subordinateio.c: Avoid dead branches.
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20
configure.in
20
configure.in
@ -244,7 +244,7 @@ AC_ARG_ENABLE(subordinate-ids,
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[AC_HELP_STRING([--enable-subordinate-ids],
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[support subordinate ids @<:@default=yes@:>@])],
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[enable_subids="${enableval}"],
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[enable_subids="yes"]
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[enable_subids="maybe"]
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)
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AC_ARG_WITH(audit,
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@ -331,12 +331,28 @@ if test "$enable_man" = "yes"; then
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fi
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AM_CONDITIONAL(ENABLE_REGENERATE_MAN, test "x$enable_man" != "xno")
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if test "$enable_subids" = "yes"; then
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if test "$enable_subids" != "no"; then
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dnl
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dnl FIXME: check if 32 bit UIDs/GIDs are supported by libc
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dnl
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AC_RUN_IFELSE([AC_LANG_SOURCE([
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#include <sys/types.h>
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int main(void) {
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uid_t u;
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gid_t g;
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return (sizeof u < 4) || (sizeof g < 4);
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}
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])], [id32bit="yes"], [id32bit="no"])
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if test "x$id32bit" = "xyes"; then
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AC_DEFINE(ENABLE_SUBIDS, 1, [Define to support the subordinate IDs.])
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enable_subids="yes"
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else
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if test "x$enable_subids" = "xyes"; then
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AC_MSG_ERROR([Cannot enable support the subordinate IDs on systems where gid_t or uid_t has less than 32 bits])
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fi
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enable_subids="no"
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fi
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fi
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AM_CONDITIONAL(ENABLE_SUBIDS, test "x$enable_subids" != "xno")
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