suid wrapper: tidy #include comments

 - note that _GNU_SOURCE is for clearenv(3) specifically, since it is
   non-POSIX.
 - note that error(3) is a GNU extension
 - note which env functions we get from stdlib.h
 - don't forget to mention setreuid(3) for unistd.h

1 files changed, 6 insertions, 6 deletions

diff --git a/.local/bin/autobuild.c b/.local/bin/autobuild.c
index c8a319d..96faa31 100644
--- a/.local/bin/autobuild.c
+++ b/.local/bin/autobuild.c
@@ -15,14 +15,14 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#define _GNU_SOURCE /* for environment functions */
+#define _GNU_SOURCE /* for clearenv(3) */
 #include <alloca.h> /* for alloca(3) */
-#include <errno.h> /* for errno */
-#include <error.h> /* for error(3) */
-#include <pwd.h> /* for getpwuid(3) */
-#include <stdlib.h> /* for environment functions */
+#include <errno.h>  /* for errno */
+#include <error.h>  /* for error(3) (GNU extension) */
+#include <pwd.h>    /* for getpwuid(3) */
+#include <stdlib.h> /* for getenv(3), setenv(3), clearenv(3) */
 #include <string.h> /* for strlen(3), strcpy(3) */
-#include <unistd.h> /* for geteuid(3), execv(3) */
+#include <unistd.h> /* for geteuid(3), setreuid(3), execv(3) */
 
 void
 mysetenv(const char *name, const char *value)