Replace toys.exithelp with help_exit() in lib.

13 files changed, 48 insertions, 96 deletions

diff --git a/toys/pending/brctl.c b/toys/pending/brctl.c
index e3b1526c..60178518 100644
--- a/toys/pending/brctl.c
+++ b/toys/pending/brctl.c
@@ -320,20 +320,14 @@ void brctl_main(void)
       if (strcmp(t->cmd, *toys.optargs)) continue;
 
       toys.optargs++, toys.optc--;
-      if (toys.optc < t->nargs) {            
-        toys.exithelp++;
-        error_exit("check args");
-      }
+      if (toys.optc < t->nargs) help_exit("check args");
       t->f(toys.optargs);
       toys.optargs += t->nargs;
       toys.optc -= t->nargs;
       break;
     }
 
-    if (i == ARRAY_LEN(cc)) {
-      toys.exithelp++;
-      error_exit("invalid option '%s'", *toys.optargs);
-    }
+    if (i == ARRAY_LEN(cc)) help_exit("invalid option '%s'", *toys.optargs);
   }
   xclose(TT.sockfd);
 }
diff --git a/toys/pending/crontab.c b/toys/pending/crontab.c
index 05c98f2b..67c8a543 100644
--- a/toys/pending/crontab.c
+++ b/toys/pending/crontab.c
@@ -346,20 +346,15 @@ void crontab_main(void)
 
   if (!toys.optc) {
     if (!FLAG_elr) {
-      if (toys.optflags & FLAG_u) {
-        toys.exithelp++;
-        error_exit("file name must be specified for replace");
-      }
+      if (toys.optflags & FLAG_u) 
+        help_exit("file name must be specified for replace");
       do_replace(pwd->pw_name);
     }
     else if (toys.optflags & FLAG_e) do_edit(pwd);
     else if (toys.optflags & FLAG_l) do_list(pwd->pw_name);
     else if (toys.optflags & FLAG_r) do_remove(pwd->pw_name);
   } else {
-    if (FLAG_elr) {
-      toys.exithelp++;
-      error_exit("no arguments permitted after this option");
-    }
+    if (FLAG_elr) help_exit("no arguments permitted after this option");
     do_replace(pwd->pw_name);
   }
   if (!(toys.optflags & FLAG_c)) free(TT.cdir);
diff --git a/toys/pending/dd.c b/toys/pending/dd.c
index 366d3c54..24d95657 100644
--- a/toys/pending/dd.c
+++ b/toys/pending/dd.c
@@ -297,10 +297,7 @@ void dd_main()
   while (*toys.optargs) {
     if (!(arg = strchr(*toys.optargs, '='))) error_exit("unknown arg %s", *toys.optargs);
     *arg++ = '\0';
-    if (!*arg) {
-      toys.exithelp = 1;
-      error_exit("");
-    }
+    if (!*arg) help_exit(0);
     key.name = *toys.optargs;
     if (!(res = bsearch(&key, operands, ARRAY_LEN(operands), sizeof(struct pair),
             comp))) error_exit("unknown arg %s", key.name);
diff --git a/toys/pending/fdisk.c b/toys/pending/fdisk.c
index 3ee9f598..d000c055 100644
--- a/toys/pending/fdisk.c
+++ b/toys/pending/fdisk.c
@@ -151,9 +151,9 @@ static void read_sec_sz()
   if (ioctl(dev_fd, BLKSSZGET, &arg) == 0) g_sect_size = arg;
   if (toys.optflags & FLAG_b) {
     if (TT.sect_sz !=  512 && TT.sect_sz != 1024 && TT.sect_sz != 2048 &&
-        TT.sect_sz != 4096) {
-      toys.exithelp++;
-      error_exit("bad sector size");
+        TT.sect_sz != 4096)
+    {
+      help_exit("bad sector size");
     }
     g_sect_size = TT.sect_sz;
   }
@@ -1486,11 +1486,7 @@ void fdisk_main(void)
     toys.exitval = 0;
     return;
   } else {
-    if (!toys.optc || toys.optc > 1 ) {
-      toys.exitval = toys.exithelp = 1;
-      show_help();
-      return;
-    }
+    if (toys.optc != 1) help_exit(stdout);
     if (read_mbr(toys.optargs[0], 1)) return;
     while (1) {
       xputc('\n');
diff --git a/toys/pending/groupadd.c b/toys/pending/groupadd.c
index 615c12f8..30468c94 100644
--- a/toys/pending/groupadd.c
+++ b/toys/pending/groupadd.c
@@ -62,10 +62,8 @@ void groupadd_main(void)
   struct group *grp = NULL;
   char *entry = NULL;
 
-  if (toys.optflags && toys.optc == 2) {
-    toys.exithelp = 1;
-    error_exit("options, user and group can't be together");
-  }
+  if (toys.optflags && toys.optc == 2)
+    help_exit("options, user and group can't be together");
 
   if (toys.optc == 2) {  //add user to group
     //toys.optargs[0]- user, toys.optargs[1] - group
diff --git a/toys/pending/ip.c b/toys/pending/ip.c
index 9a01d953..90f73308 100644
--- a/toys/pending/ip.c
+++ b/toys/pending/ip.c
@@ -137,12 +137,6 @@ static char *idx_to_string(int idx, struct arglist *list)
   return NULL;
 }
 
-static void iphelp(void)
-{
-  toys.exithelp = 1;
-  error_exit(NULL);
-}
-
 static void send_nlmesg(int type, int flags, int family,
     void *buf, int blen)
 {
@@ -519,16 +513,16 @@ static void vlan_parse_opt(char **argv, struct nlmsghdr *n, unsigned int size)
   for (; *argv; argv++) {
     int param, proto;
 
-    if ((idx = substring_to_idx(*argv++, vlan_optlist)) == -1) iphelp();
+    if ((idx = substring_to_idx(*argv++, vlan_optlist)) == -1) help_exit(0);
     switch (idx) {
       case 0: // ARG_id
-        if (!*argv) iphelp();
+        if (!*argv) help_exit(0);
         param = atolx(*argv);
         add_string_to_rtattr(n, size, IFLA_VLAN_ID, &param, sizeof(param));
         break;
       case 1: // ARG_protocol
         if (!*argv) error_exit("Invalid vlan id.");
-        if ((idx = substring_to_idx(*argv, vlan_protolist)) == -1) iphelp();
+        if ((idx = substring_to_idx(*argv, vlan_protolist)) == -1) help_exit(0);
         if (!idx) proto = ETH_P_8021Q; // PROTO_8021Q - 0
         else if (idx == 1) proto = 0x88A8; // ETH Protocol - 8021AD
         // IFLA VLAN PROTOCOL - 5
@@ -536,7 +530,7 @@ static void vlan_parse_opt(char **argv, struct nlmsghdr *n, unsigned int size)
         break;
       case 2: // ARG_reorder_hdr
       case 3: // ARG_gvrp
-        if ((param = substring_to_idx(*argv, on_off)) == -1) iphelp();
+        if ((param = substring_to_idx(*argv, on_off)) == -1) help_exit(0);
 
         flags.mask |= (idx -1); // VLAN FLAG REORDER Header              
         flags.flags &= ~(idx -1); // VLAN FLAG REORDER Header            
@@ -650,7 +644,7 @@ static int link_set(char **argv)
   fd = xsocket(AF_INET, SOCK_DGRAM, 0);
   xioctl(fd, SIOCGIFINDEX, &req);
   for (++argv; *argv;) {
-    if ((idx = substring_to_idx(*argv++, cmd_objectlist)) == -1) iphelp();
+    if ((idx = substring_to_idx(*argv++, cmd_objectlist)) == -1) help_exit(0);
     switch(idx) {
       case 0:
         flags |= IFF_UP; break;
@@ -659,7 +653,7 @@ static int link_set(char **argv)
       case 2:
       case 3:
       case 4:
-        if (!*argv) iphelp();
+        if (!*argv) help_exit(0);
         else if (!strcmp(*argv, "on")) {
           if (idx == 2) {
             masks &= ~case_flags[idx-2];
@@ -670,7 +664,7 @@ static int link_set(char **argv)
             masks |= case_flags[idx-2];
             flags |= case_flags[idx-2];
           } else masks &= ~case_flags[idx-2];
-        } else iphelp();
+        } else help_exit(0);
         ++argv;
         break;
       case 5:
@@ -941,7 +935,8 @@ static int iplink(char **argv)
     {"set", 1}, {"show", 2}, {"list", 2}, {"lst", 2}, {NULL,-1}};
 
   if (!*argv) idx = 2;
-  else if ((idx = substring_to_idx(*argv++, cmd_objectlist)) == -1) iphelp();
+  else if ((idx = substring_to_idx(*argv++, cmd_objectlist)) == -1)
+    help_exit(0);
   ipcmd = cmdobjlist[idx];
   return ipcmd(argv);
 }
@@ -1431,7 +1426,8 @@ static int ipaddr(char **argv)
 
   TT.is_addr++;
   if (!*argv) idx = 1;
-  else if ((idx = substring_to_idx(*argv++, cmd_objectlist)) == -1) iphelp();
+  else if ((idx = substring_to_idx(*argv++, cmd_objectlist)) == -1)
+    help_exit(0);
 
   ipcmd = cmdobjlist[idx];
   return ipcmd(argv);
@@ -2757,7 +2753,7 @@ void ip_main(void)
                   struct arglist ip_aflist[] = {{"inet", AF_INET},
                     {"inet6", AF_INET6}, {"link", AF_PACKET}, {NULL, -1}};
 
-                  if (!*++optargv) iphelp();
+                  if (!*++optargv) help_exit(0);
                   if ((TT.addressfamily = string_to_idx(*optargv, ip_aflist)) == -1)
                     error_exit("wrong family '%s'", *optargv);
                 }
@@ -2766,7 +2762,7 @@ void ip_main(void)
       case 2:
               TT.stats++;
               break;
-      default: iphelp();
+      default: help_exit(0);
                break; // unreachable code.
     }
   }
@@ -2778,15 +2774,15 @@ void ip_main(void)
       struct arglist ip_objectlist[] = { {"address", 0}, {"link", 1},
         {"route", 2}, {"rule", 3}, {"tunnel", 4}, {"tunl", 4}, {NULL, -1}};
 
-      if ((idx = substring_to_idx(*optargv, ip_objectlist)) == -1) iphelp();
+      if ((idx = substring_to_idx(*optargv, ip_objectlist)) == -1) help_exit(0);
       ipcmd = cmdobjlist[idx];
       toys.exitval = ipcmd(++optargv);
-    } else iphelp();
+    } else help_exit(0);
   } else {
     struct arglist ip_objectlist[] = { {"ipaddr", 0}, {"iplink", 1},
       {"iproute", 2}, {"iprule", 3}, {"iptunnel", 4}, {NULL, -1}};
     if ((idx = string_to_idx(toys.which->name, ip_objectlist)) == -1)
-      iphelp();
+      help_exit(0);
     ipcmd = cmdobjlist[idx];
     toys.exitval = ipcmd(optargv);
   }
diff --git a/toys/pending/ipcrm.c b/toys/pending/ipcrm.c
index 21f436d3..cec1b12f 100644
--- a/toys/pending/ipcrm.c
+++ b/toys/pending/ipcrm.c
@@ -83,9 +83,6 @@ void ipcrm_main(void)
     for (tmp = TT.qid; tmp; tmp = tmp->next) do_ipcrm(0, 2, tmp->arg);
     for (tmp = TT.skey; tmp; tmp = tmp->next) do_ipcrm(1, 3, tmp->arg);
     for (tmp = TT.sid; tmp; tmp = tmp->next) do_ipcrm(0, 3, tmp->arg);
-    if (toys.optc) {
-      toys.exithelp++;
-      error_exit("unknown argument: %s", *toys.optargs);
-    }
+    if (toys.optc) help_exit("unknown argument: %s", *toys.optargs);
   }
 }
diff --git a/toys/pending/ipcs.c b/toys/pending/ipcs.c
index d974a519..b5986af7 100644
--- a/toys/pending/ipcs.c
+++ b/toys/pending/ipcs.c
@@ -425,10 +425,7 @@ void ipcs_main(void)
     if (flag(m)) show_shm_id();
     else if (flag(s)) show_sem_id();
     else if (flag(q)) show_msg_id();
-    else {
-      toys.exithelp++;
-      error_exit(NULL);
-    }
+    else help_exit(0);
     return;
   }
 
diff --git a/toys/pending/modprobe.c b/toys/pending/modprobe.c
index 07c53fc2..6813dec3 100644
--- a/toys/pending/modprobe.c
+++ b/toys/pending/modprobe.c
@@ -495,8 +495,7 @@ void modprobe_main(void)
   if ((toys.optc < 1) && (((flags & FLAG_r) && (flags & FLAG_l))
         ||(!((flags & FLAG_r)||(flags & FLAG_l)))))
   {
-	  toys.exithelp++;
-	  error_exit("bad syntax");
+	  help_exit("bad syntax");
   }
   // Check for -r flag without arg if yes then do auto remove.
   if ((flags & FLAG_r) && !toys.optc) {
diff --git a/toys/pending/pgrep.c b/toys/pending/pgrep.c
index 59767b9f..9117a6d5 100644
--- a/toys/pending/pgrep.c
+++ b/toys/pending/pgrep.c
@@ -91,14 +91,10 @@ void pgrep_main(void)
         error_exit("Unknown signal '%s'", arg);
     } else signum = SIGTERM;
   }
-  if (!(flag_chk(FLAG_s) || flag_chk(FLAG_P)) && !*toys.optargs) {
-    toys.exithelp++;
-    error_exit("missing argument");
-  }
-  if (*(toys.optargs+1) && !(flag_chk(FLAG_s) || flag_chk(FLAG_P))) {
-    toys.exithelp++;
-    error_exit("max argument > 1");
-  }
+  if (!(flag_chk(FLAG_s) || flag_chk(FLAG_P)) && !*toys.optargs)
+    help_exit("missing argument");
+  if (*(toys.optargs+1) && !(flag_chk(FLAG_s) || flag_chk(FLAG_P)))
+    help_exit("max argument > 1");
   if (*toys.optargs) { /* compile regular expression(PATTERN) */
     if ((eval = regcomp(&rp, *toys.optargs, REG_EXTENDED | REG_NOSUB)) != 0) {
       char errbuf[256];
diff --git a/toys/pending/route.c b/toys/pending/route.c
index ac1bbef5..02b59cfb 100644
--- a/toys/pending/route.c
+++ b/toys/pending/route.c
@@ -32,7 +32,7 @@ GLOBALS(
 #define INVALID_ADDR 0xffffffffUL
 #define IPV6_ADDR_LEN 40 //32 + 7 (':') + 1 ('\0')
 
-#define TEST_ARGV(argv) if (!*argv) show_route_help()
+#define TEST_ARGV(argv) if (!*argv) help_exit(0)
 
 struct _arglist {
   char *arg;
@@ -49,13 +49,6 @@ static struct _arglist arglist2[] = {
   { NULL, 0 }
 };
 
-// display help info and exit.
-static void show_route_help(void)
-{
-  toys.exithelp = 1;
-  error_exit("Invalid Argument");
-}
-
 // to get the host name from the given ip.
 static int get_hostname(char *ipstr, struct sockaddr_in *sockin)
 {
@@ -205,7 +198,7 @@ static void get_next_params(char **argv, struct rtentry *rt, char **netmask)
       //when adding a network route, the netmask to be used.
       struct sockaddr sock;
       unsigned int addr_mask = (((struct sockaddr_in *)&((rt)->rt_genmask))->sin_addr.s_addr);
-      if (addr_mask) show_route_help();
+      if (addr_mask) help_exit("dup netmask");
       argv++;
       TEST_ARGV(argv);
       *netmask = *argv;
@@ -224,7 +217,7 @@ static void get_next_params(char **argv, struct rtentry *rt, char **netmask)
           argv++;
         } else if (ishost < 0) perror_exit("resolving '%s'", *argv);
         else perror_exit("gateway '%s' is a NETWORK", *argv);
-      } else show_route_help();
+      } else help_exit("dup gw");
     } else if (!strcmp(*argv, "mss")) {
       //set the TCP Maximum Segment Size for connections over this route.
       argv++;
@@ -265,7 +258,7 @@ static void get_next_params(char **argv, struct rtentry *rt, char **netmask)
     } else if (!strcmp(*argv, "reinstate")) {
       rt->rt_flags |= RTF_REINSTATE;
       argv++;
-    } else show_route_help();  //No match found; exit form the application.
+    } else help_exit("no '%s'", *argv);  //No match found; exit form the application.
   }//end of while loop.
 
   if (!rt->rt_dev && (rt->rt_flags & RTF_REJECT)) rt->rt_dev = (char *)"lo";
@@ -295,10 +288,10 @@ static void setroute(char **argv)
   int is_net_or_host = 0, sokfd, arg2_action;
   int action = get_action(&argv, arglist1); //verify the arg for add/del.
 
-  if (!action || !*argv) show_route_help();
+  if (!action || !*argv) help_exit("setroute");
 
   arg2_action = get_action(&argv, arglist2); //verify the arg for -net or -host
-  if (!*argv) show_route_help(); 
+  if (!*argv) help_exit("setroute");
 
   memset(&rt, 0, sizeof(struct rtentry));
   targetip = *argv++;
@@ -364,7 +357,7 @@ static void get_next_params_inet6(char **argv, struct sockaddr_in6 *sock_in6, st
           rt->rtmsg_flags |= RTF_GATEWAY;
           argv++;
         } else perror_exit("resolving '%s'", *argv);
-      } else show_route_help();
+      } else help_exit(0);
     } else if (!strcmp(*argv, "dev")) {
       argv++;
       TEST_ARGV(argv);
@@ -376,7 +369,7 @@ static void get_next_params_inet6(char **argv, struct sockaddr_in6 *sock_in6, st
     } else if (!strcmp(*argv, "dyn")) {
       rt->rtmsg_flags |= RTF_DYNAMIC;
       argv++;
-    } else show_route_help();
+    } else help_exit(0);
   }//end of while loop.
 }
 
@@ -388,7 +381,7 @@ static void setroute_inet6(char **argv)
   char *targetip;
   int sockfd, action = get_action(&argv, arglist1);
 
-  if (!action || !*argv) show_route_help();
+  if (!action || !*argv) help_exit(0);
   memset(&sock_in6, 0, sizeof(struct sockaddr_in6));
   memset(&rt, 0, sizeof(struct in6_rtmsg));
   targetip = *argv++;
@@ -418,7 +411,7 @@ static void setroute_inet6(char **argv)
     if (action == 1) xioctl(sockfd, SIOCADDRT, &rt);
     else xioctl(sockfd, SIOCDELRT, &rt);
     xclose(sockfd);
-  } else show_route_help();
+  } else help_exit(0);
 }
 
 /*
@@ -489,7 +482,7 @@ void route_main(void)
   if (!*toys.optargs) {
     if (!strcmp(TT.family, "inet")) display_routes();
     else if (!strcmp(TT.family, "inet6")) display_routes6();
-    else show_route_help();
+    else help_exit(0);
     return;
   }//End of if statement.
 
diff --git a/toys/pending/tftpd.c b/toys/pending/tftpd.c
index 31af44be..806326eb 100644
--- a/toys/pending/tftpd.c
+++ b/toys/pending/tftpd.c
@@ -242,10 +242,7 @@ void tftpd_main(void)
   char *buf = toybuf;
 
   memset(&srcaddr, 0, sizeof(srcaddr));
-  if (getsockname(0, (struct sockaddr *)&srcaddr, &socklen)) {
-    toys.exithelp = 1;
-    error_exit(NULL);
-  }
+  if (getsockname(0, (struct sockaddr *)&srcaddr, &socklen)) help_exit(0);
 
   if (TT.user) TT.pw = xgetpwnam(TT.user);
   if (*toys.optargs) xchroot(*toys.optargs);
diff --git a/toys/pending/useradd.c b/toys/pending/useradd.c
index 4d4c671e..d0ad03ab 100644
--- a/toys/pending/useradd.c
+++ b/toys/pending/useradd.c
@@ -46,10 +46,7 @@ void useradd_main(void)
 
   // Act like groupadd?
   if (toys.optc == 2) {
-    if (toys.optflags) {
-      toys.exithelp = 1;
-      error_exit("options with USER GROUP");
-    }
+    if (toys.optflags) help_exit("options with USER GROUP");
     xexec((char *[]){"groupadd", toys.optargs[0], toys.optargs[1], 0});
   }