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author | DJ Delorie <dj@redhat.com> | 2019-06-28 18:30:00 -0500 |
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committer | DJ Delorie <dj@redhat.com> | 2019-07-10 14:51:18 -0400 |
commit | 99135114ba23c3110b7e4e650fabdc5e639746b7 (patch) | |
tree | 09e4349308db59321eddff440eadaa630f60575b /support/links-dso-program-c.c | |
parent | 30ba0375464f34e4bf8129f3d3dc14d0c09add17 (diff) | |
download | glibc-99135114ba23c3110b7e4e650fabdc5e639746b7.tar.gz glibc-99135114ba23c3110b7e4e650fabdc5e639746b7.tar.xz glibc-99135114ba23c3110b7e4e650fabdc5e639746b7.zip |
nss_db: fix endent wrt NULL mappings [BZ #24695] [BZ #24696]
nss_db allows for getpwent et al to be called without a set*ent, but it only works once. After the last get*ent a set*ent is required to restart, because the end*ent did not properly reset the module. Resetting it to NULL allows for a proper restart. If the database doesn't exist, however, end*ent erroniously called munmap which set errno. The test case runs "makedb" inside the testroot, so needs selinux DSOs installed.
Diffstat (limited to 'support/links-dso-program-c.c')
-rw-r--r-- | support/links-dso-program-c.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/support/links-dso-program-c.c b/support/links-dso-program-c.c index d28a28a0d0..5fcbab2c17 100644 --- a/support/links-dso-program-c.c +++ b/support/links-dso-program-c.c @@ -1,9 +1,26 @@ #include <stdio.h> +/* makedb needs selinux dso's. */ +#ifdef HAVE_SELINUX +# include <selinux/selinux.h> +#endif + +/* The purpose of this file is to indicate to the build system which + shared objects need to be copied into the testroot, such as gcc or + selinux support libraries. This program is never executed, only + scanned for dependencies on shared objects, so the code below may + seem weird - it's written to survive gcc optimization and force + such dependencies. +*/ + int main (int argc, char **argv) { /* Complexity to keep gcc from optimizing this away. */ printf ("This is a test %s.\n", argc > 1 ? argv[1] : "null"); +#ifdef HAVE_SELINUX + /* This exists to force libselinux.so to be required. */ + printf ("selinux %d\n", is_selinux_enabled ()); +#endif return 0; } |