+/*
+** context_save.c -- write out the updated context file
+**
+** This code is Copyright (c) 2002, by the authors of nmh. See the
+** COPYRIGHT file in the root directory of the nmh distribution for
+** complete copyright information.
+*/
/*
- * context_save.c -- write out the updated context file
- *
- * This code is Copyright (c) 2002, by the authors of nmh. See the
- * COPYRIGHT file in the root directory of the nmh distribution for
- * complete copyright information.
+ * This function used to support setuid/setgid programs by writing
+ * the file as the user. But that code, m_chkids(), was removed
+ * because there no longer are setuid/setgid programs in nmh.
*/
+#include <sysexits.h>
#include <h/mh.h>
#include <h/signals.h>
-/*
- * static prototypes
- */
-static int m_chkids(void);
-
-
void
-context_save (void)
+context_save(void)
{
- int action;
- register struct node *np;
- FILE *out;
- sigset_t set, oset;
-
- /* No context in use -- silently ignore any changes! */
- if (!ctxpath)
- return;
-
- if (!(ctxflags & CTXMOD))
- return;
- ctxflags &= ~CTXMOD;
-
- if ((action = m_chkids ()) > 0)
- return; /* child did it for us */
-
- /* block a few signals */
- sigemptyset (&set);
- sigaddset (&set, SIGHUP);
- sigaddset (&set, SIGINT);
- sigaddset (&set, SIGQUIT);
- sigaddset (&set, SIGTERM);
- SIGPROCMASK (SIG_BLOCK, &set, &oset);
-
- if (!(out = lkfopen (ctxpath, "w")))
- adios (ctxpath, "unable to write");
- for (np = m_defs; np; np = np->n_next)
- if (np->n_context)
- fprintf (out, "%s: %s\n", np->n_name, np->n_field);
- lkfclose (out, ctxpath);
-
- SIGPROCMASK (SIG_SETMASK, &oset, &set); /* reset the signal mask */
-
- if (action == 0)
- _exit (0); /* we are child, time to die */
-}
-
-/*
- * This hack brought to you so we can handle set[ug]id MH programs.
- * If we return -1, then no fork is made, we update .mh_profile
- * normally, and return to the caller normally. If we return 0,
- * then the child is executing, .mh_profile is modified after
- * we set our [ug]ids to the norm. If we return > 0, then the
- * parent is executed and .mh_profile has already be modified.
- * We can just return to the caller immediately.
- */
-
-static int
-m_chkids (void)
-{
- int i;
- pid_t pid;
-
- if (getuid () == geteuid ())
- return (-1);
-
- for (i = 0; (pid = fork ()) == -1 && i < 5; i++)
- sleep (5);
-
- switch (pid) {
- case -1:
- break;
-
- case 0:
- setgid (getgid ());
- setuid (getuid ());
- break;
-
- default:
- pidwait (pid, -1);
- break;
- }
-
- return pid;
+ struct node *np;
+ FILE *out;
+ sigset_t set, oset;
+
+ /* No context in use -- silently ignore any changes! */
+ if (!ctxpath)
+ return;
+
+ if (!(ctxflags & CTXMOD))
+ return;
+ ctxflags &= ~CTXMOD;
+
+ /* block a few signals */
+ sigemptyset(&set);
+ sigaddset(&set, SIGHUP);
+ sigaddset(&set, SIGINT);
+ sigaddset(&set, SIGQUIT);
+ sigaddset(&set, SIGTERM);
+ sigprocmask(SIG_BLOCK, &set, &oset);
+
+ if (!(out = lkfopen(ctxpath, "w")))
+ adios(EX_IOERR, ctxpath, "unable to write");
+ for (np = m_defs; np; np = np->n_next)
+ if (np->n_context)
+ fprintf(out, "%s: %s\n", np->n_name, np->n_field);
+ lkfclose(out, ctxpath);
+
+ sigprocmask(SIG_SETMASK, &oset, &set); /* reset the signal mask */
}