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| author | Eelco Dolstra <e.dolstra@tudelft.nl> | 2004-09-09T21·12+0000 |
|---|---|---|
| committer | Eelco Dolstra <e.dolstra@tudelft.nl> | 2004-09-09T21·12+0000 |
| commit | 47f87072ad42338a9b6397a250abf2775d051d8e (patch) | |
| tree | 6b90037f189ae2b2c750c5c4286b55ef866278d1 /configure.ac | |
| parent | 5396304c73190c6898981caf653fc1b28be71f70 (diff) | |
* A very dirty hack to make setuid installations a bit nicer to use.
Previously there was the problem that all files read by nix-env etc. should be reachable and readable by the Nix user. So for instance building a Nix expression in your home directory meant that the home directory should have at least g+x or o+x permission so that the Nix user could reach the Nix expression. Now we just switch back to the original user just prior to reading sources and the like. The places where this happens are somewhat arbitrary, however. Any scope that has a live SwitchToOriginalUser object in it is executed as the original user. * Back out r1385. setreuid() sets the saved uid to the new real/effective uid, which prevents us from switching back to the original uid. setresuid() doesn't have this problem (although the manpage has a bug: specifying -1 for the saved uid doesn't leave it unchanged; an explicit value must be specified).
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/configure.ac b/configure.ac index 6b041c165c..2ba8e92384 100644 --- a/configure.ac +++ b/configure.ac @@ -151,10 +151,10 @@ if test "$setuid_hack" = "yes"; then AC_DEFINE(SETUID_HACK, 1, [whether to install Nix setuid]) fi -AC_CHECK_FUNC(setreuid, [HAVE_SETREUID=1], [HAVE_SETREUID=]) -AM_CONDITIONAL(HAVE_SETREUID, test "$HAVE_SETREUID" = "1") -if test "$HAVE_SETREUID" = "1"; then - AC_DEFINE(HAVE_SETREUID, 1, [whether we have setreuid()]) +AC_CHECK_FUNC(setresuid, [HAVE_SETRESUID=1], [HAVE_SETRESUID=]) +AM_CONDITIONAL(HAVE_SETRESUID, test "$HAVE_SETRESUID" = "1") +if test "$HAVE_SETRESUID" = "1"; then + AC_DEFINE(HAVE_SETRESUID, 1, [whether we have setresuid()]) fi AC_ARG_WITH(nix-user, AC_HELP_STRING([--with-nix-user=USER], |