ash: cleanup part 2.2

git-svn-id: svn://busybox.net/trunk/busybox@17964 69ca8d6d-28ef-0310-b511-8ec308f3f277

1 files changed, 146 insertions, 148 deletions

diff --git a/shell/ash.c b/shell/ash.c
index 664a6fa16..6f3142952 100644
--- a/shell/ash.c
+++ b/shell/ash.c
@@ -2983,6 +2983,7 @@ static int shiftcmd(int, char **);
 static int setcmd(int, char **);
 static int nextopt(const char *);
 
+
 /*      redir.h      */
 
 /* flags passed to redirect */
@@ -2995,13 +2996,6 @@ static void clearredir(int);
 static int copyfd(int, int);
 static int redirectsafe(union node *, int);
 
-/*      trap.h       */
-
-static void clear_traps(void);
-static void setsignal(int);
-static int dotrap(void);
-
-
 static int is_safe_applet(char *name)
 {
         /* It isn't a bug to have non-existent applet here... */
@@ -3038,6 +3032,7 @@ static int is_safe_applet(char *name)
 
 
 /* ============ Alias handling */
+
 #if ENABLE_ASH_ALIAS
 
 #define ALIASINUSE 1
@@ -3232,6 +3227,7 @@ unaliascmd(int argc, char **argv)
 
         return i;
 }
+
 #endif /* ASH_ALIAS */
 
 
@@ -5653,6 +5649,43 @@ static int evalskip;            /* set if we are skipping commands */
 static int skipcount;           /* number of levels to skip */
 static int funcnest;            /* depth of function calls */
 
+/* forward decl way out to parsing code - dotrap needs it */
+static int evalstring(char *s, int mask);
+
+/*
+ * Called to execute a trap.  Perhaps we should avoid entering new trap
+ * handlers while we are executing a trap handler.
+ */
+static int
+dotrap(void)
+{
+        char *p;
+        char *q;
+        int i;
+        int savestatus;
+        int skip = 0;
+
+        savestatus = exitstatus;
+        pendingsigs = 0;
+        xbarrier();
+
+        for (i = 0, q = gotsig; i < NSIG - 1; i++, q++) {
+                if (!*q)
+                        continue;
+                *q = '\0';
+
+                p = trap[i + 1];
+                if (!p)
+                        continue;
+                skip = evalstring(p, SKIPEVAL);
+                exitstatus = savestatus;
+                if (skip)
+                        break;
+        }
+
+        return skip;
+}
+
 /* forward declarations - evaluation is fairly recursive business... */
 static void evalloop(union node *, int);
 static void evalfor(union node *, int);
@@ -7319,6 +7352,93 @@ setinputstring(char *string)
 
 /* ============ jobs.c */
 
+/*
+ * Set the signal handler for the specified signal.  The routine figures
+ * out what it should be set to.
+ */
+static void
+setsignal(int signo)
+{
+        int action;
+        char *t, tsig;
+        struct sigaction act;
+
+        t = trap[signo];
+        if (t == NULL)
+                action = S_DFL;
+        else if (*t != '\0')
+                action = S_CATCH;
+        else
+                action = S_IGN;
+        if (rootshell && action == S_DFL) {
+                switch (signo) {
+                case SIGINT:
+                        if (iflag || minusc || sflag == 0)
+                                action = S_CATCH;
+                        break;
+                case SIGQUIT:
+#if DEBUG
+                        if (debug)
+                                break;
+#endif
+                        /* FALLTHROUGH */
+                case SIGTERM:
+                        if (iflag)
+                                action = S_IGN;
+                        break;
+#if JOBS
+                case SIGTSTP:
+                case SIGTTOU:
+                        if (mflag)
+                                action = S_IGN;
+                        break;
+#endif
+                }
+        }
+
+        t = &sigmode[signo - 1];
+        tsig = *t;
+        if (tsig == 0) {
+                /*
+                 * current setting unknown
+                 */
+                if (sigaction(signo, 0, &act) == -1) {
+                        /*
+                         * Pretend it worked; maybe we should give a warning
+                         * here, but other shells don't. We don't alter
+                         * sigmode, so that we retry every time.
+                         */
+                        return;
+                }
+                if (act.sa_handler == SIG_IGN) {
+                        if (mflag
+                         && (signo == SIGTSTP || signo == SIGTTIN || signo == SIGTTOU)
+                        ) {
+                                tsig = S_IGN;   /* don't hard ignore these */
+                        } else
+                                tsig = S_HARD_IGN;
+                } else {
+                        tsig = S_RESET; /* force to be set */
+                }
+        }
+        if (tsig == S_HARD_IGN || tsig == action)
+                return;
+        switch (action) {
+        case S_CATCH:
+                act.sa_handler = onsig;
+                break;
+        case S_IGN:
+                act.sa_handler = SIG_IGN;
+                break;
+        default:
+                act.sa_handler = SIG_DFL;
+        }
+        *t = action;
+        act.sa_flags = 0;
+        sigfillset(&act.sa_mask);
+        sigaction(signo, &act, 0);
+}
+
 /* mode flags for set_curjob */
 #define CUR_DELETE 2
 #define CUR_RUNNING 1
@@ -8497,6 +8617,25 @@ commandtext(union node *n)
  *
  * Called with interrupts off.
  */
+/*
+ * Clear traps on a fork.
+ */
+static void
+clear_traps(void)
+{
+        char **tp;
+
+        for (tp = trap; tp < &trap[NSIG]; tp++) {
+                if (*tp && **tp) {      /* trap not NULL or SIG_IGN */
+                        INT_OFF;
+                        free(*tp);
+                        *tp = NULL;
+                        if (tp != &trap[0])
+                                setsignal(tp - trap);
+                        INT_ON;
+                }
+        }
+}
 static void
 forkchild(struct job *jp, union node *n, int mode)
 {
@@ -11264,147 +11403,6 @@ trapcmd(int argc, char **argv)
         return 0;
 }
 
-/*
- * Clear traps on a fork.
- */
-static void
-clear_traps(void)
-{
-        char **tp;
-
-        for (tp = trap; tp < &trap[NSIG]; tp++) {
-                if (*tp && **tp) {      /* trap not NULL or SIG_IGN */
-                        INT_OFF;
-                        free(*tp);
-                        *tp = NULL;
-                        if (tp != &trap[0])
-                                setsignal(tp - trap);
-                        INT_ON;
-                }
-        }
-}
-
-/*
- * Set the signal handler for the specified signal.  The routine figures
- * out what it should be set to.
- */
-static void
-setsignal(int signo)
-{
-        int action;
-        char *t, tsig;
-        struct sigaction act;
-
-        t = trap[signo];
-        if (t == NULL)
-                action = S_DFL;
-        else if (*t != '\0')
-                action = S_CATCH;
-        else
-                action = S_IGN;
-        if (rootshell && action == S_DFL) {
-                switch (signo) {
-                case SIGINT:
-                        if (iflag || minusc || sflag == 0)
-                                action = S_CATCH;
-                        break;
-                case SIGQUIT:
-#if DEBUG
-                        if (debug)
-                                break;
-#endif
-                        /* FALLTHROUGH */
-                case SIGTERM:
-                        if (iflag)
-                                action = S_IGN;
-                        break;
-#if JOBS
-                case SIGTSTP:
-                case SIGTTOU:
-                        if (mflag)
-                                action = S_IGN;
-                        break;
-#endif
-                }
-        }
-
-        t = &sigmode[signo - 1];
-        tsig = *t;
-        if (tsig == 0) {
-                /*
-                 * current setting unknown
-                 */
-                if (sigaction(signo, 0, &act) == -1) {
-                        /*
-                         * Pretend it worked; maybe we should give a warning
-                         * here, but other shells don't. We don't alter
-                         * sigmode, so that we retry every time.
-                         */
-                        return;
-                }
-                if (act.sa_handler == SIG_IGN) {
-                        if (mflag
-                         && (signo == SIGTSTP || signo == SIGTTIN || signo == SIGTTOU)
-                        ) {
-                                tsig = S_IGN;   /* don't hard ignore these */
-                        } else
-                                tsig = S_HARD_IGN;
-                } else {
-                        tsig = S_RESET; /* force to be set */
-                }
-        }
-        if (tsig == S_HARD_IGN || tsig == action)
-                return;
-        switch (action) {
-        case S_CATCH:
-                act.sa_handler = onsig;
-                break;
-        case S_IGN:
-                act.sa_handler = SIG_IGN;
-                break;
-        default:
-                act.sa_handler = SIG_DFL;
-        }
-        *t = action;
-        act.sa_flags = 0;
-        sigfillset(&act.sa_mask);
-        sigaction(signo, &act, 0);
-}
-
-/*
- * Called to execute a trap.  Perhaps we should avoid entering new trap
- * handlers while we are executing a trap handler.
- */
-static int
-dotrap(void)
-{
-        char *p;
-        char *q;
-        int i;
-        int savestatus;
-        int skip = 0;
-
-        savestatus = exitstatus;
-        pendingsigs = 0;
-        xbarrier();
-
-        for (i = 0, q = gotsig; i < NSIG - 1; i++, q++) {
-                if (!*q)
-                        continue;
-                *q = '\0';
-
-                p = trap[i + 1];
-                if (!p)
-                        continue;
-                skip = evalstring(p, SKIPEVAL);
-                exitstatus = savestatus;
-                if (skip)
-                        break;
-        }
-
-        return skip;
-}
-
 
 /* ============ Builtins */