exit with EXIT_SUCCESS/EXIT_FAILURE

chvt.c

@@ -53,5 +53,5 @@ VTfound:
 		eprintf("chvt: VT_WAITACTIVE '%d':", n);
 	close(fd);
 
-	return 0;
+	return EXIT_SUCCESS;
 }

clear.c

@@ -1,9 +1,10 @@
 /* See LICENSE file for copyright and license details. */
 #include <stdio.h>
+#include <stdlib.h>
 
 int
 main(void)
 {
 	printf("\e[2J\e[H");
-	return 0;
+	return EXIT_SUCCESS;
 }

df.c

@@ -39,7 +39,7 @@ main(int argc, char *argv[])
 		mnt_show(minfo[i].fsname, minfo[i].mntdir);
 	free(minfo);
 
-	return 0;
+	return EXIT_SUCCESS;
 }
 
 static void

dmesg.c

@@ -76,7 +76,7 @@ main(int argc, char *argv[])
 		eprintf("klogctl:");
 
 	free(buf);
-	return 0;
+	return EXIT_SUCCESS;
 }
 
 static int

eject.c

@@ -5,6 +5,7 @@
 #include <fcntl.h>
 #include <unistd.h>
 #include <stdio.h>
+#include <stdlib.h>
 #include "util.h"
 
 enum {
@@ -49,5 +50,5 @@ main(int argc, char *argv[])
 			eprintf("ioctl:");
 	}
 	close(fd);
-	return 0;
+	return EXIT_SUCCESS;
 }

fallocate.c

@@ -40,5 +40,5 @@ main(int argc, char *argv[])
 		eprintf("posix_fallocate:");
 
 	close(fd);
-	return 0;
+	return EXIT_SUCCESS;
 }

free.c

@@ -66,5 +66,5 @@ main(int argc, char *argv[])
 	       scale(info.totalswap),
 	       scale(info.totalswap - info.freeswap),
 	       scale(info.freeswap));
-	return 0;
+	return EXIT_SUCCESS;
 }

halt.c

@@ -2,6 +2,7 @@
 #include <sys/syscall.h>
 #include <unistd.h>
 #include <stdio.h>
+#include <stdlib.h>
 #include "reboot.h"
 #include "util.h"
 
@@ -44,5 +45,5 @@ main(int argc, char *argv[])
 	if (syscall(__NR_reboot, LINUX_REBOOT_MAGIC1,
 		    LINUX_REBOOT_MAGIC2, cmd, NULL) < 0)
 		eprintf("reboot:");
-	return 0;
+	return EXIT_SUCCESS;
 }

insmod.c

@@ -66,5 +66,5 @@ main(int argc, char *argv[])
 
 	free(opts);
 	free(buf);
-	return 0;
+	return EXIT_SUCCESS;
 }

lsmod.c

@@ -48,7 +48,7 @@ main(int argc, char *argv[])
 	if (ferror(fp))
 		eprintf("%s: read error:", modfile);
 	fclose(fp);
-	return 0;
+	return EXIT_SUCCESS;
 }
 
 static void

lsusb.c

@@ -21,7 +21,7 @@ main(int argc, char *argv[])
 	} ARGEND;
 
 	recurse("/sys/bus/usb/devices", lsusb);
-	return 0;
+	return EXIT_SUCCESS;
 }
 
 static void

mkswap.c

@@ -59,7 +59,7 @@ main(int argc, char *argv[])
 
 	pages = sb.st_size / pagesize;
 	if (pages < SWAP_MIN_PAGES)
-		enprintf(1, "swap space needs to be at least %ldKiB\n",
+		enprintf(EXIT_FAILURE, "swap space needs to be at least %ldKiB\n",
 			 SWAP_MIN_PAGES * pagesize / 1024);
 
 	/* Fill up the swap header */
@@ -73,11 +73,11 @@ main(int argc, char *argv[])
 
 	/* Write out the signature page */
 	if (write(fd, buf, pagesize) != pagesize)
-		enprintf(1, "unable to write signature page\n");
+		enprintf(EXIT_FAILURE, "unable to write signature page\n");
 
 	fsync(fd);
 	close(fd);
 	free(buf);
 
-	return 0;
+	return EXIT_SUCCESS;
 }

mount.c

@@ -119,7 +119,7 @@ main(int argc, char *argv[])
 			break;
 	}
 	if (oflag && !validopt)
-		enprintf(1, "unknown option: %s\n", opt->name);
+		enprintf(EXIT_FAILURE, "unknown option: %s\n", opt->name);
 
 	source = argv[0];
 	target = argv[1];
@@ -142,7 +142,7 @@ main(int argc, char *argv[])
 			}
 		}
 		if (!source)
-			enprintf(1, "can't find %s mountpoint\n",
+			enprintf(EXIT_FAILURE, "can't find %s mountpoint\n",
 				 target);
 	}
 
@@ -159,5 +159,5 @@ main(int argc, char *argv[])
 		opt = tmp;
 	}
 
-	return 0;
+	return EXIT_SUCCESS;
 }

mountpoint.c

@@ -50,7 +50,7 @@ main(int argc, char *argv[])
 				argv[0]);
 		printf("%u:%u\n", major(st1.st_rdev),
 		       minor(st1.st_rdev));
-		return 0;
+		return EXIT_SUCCESS;
 	}
 
 	if (!S_ISDIR(st1.st_mode))
@@ -59,7 +59,7 @@ main(int argc, char *argv[])
 	if (dflag) {
 		printf("%u:%u\n", major(st1.st_dev),
 		       minor(st1.st_dev));
-		return 0;
+		return EXIT_SUCCESS;
 	}
 
 	siz = grabmntinfo(&minfo);

pidof.c

@@ -109,5 +109,5 @@ out:
 		onode = tmp;
 	}
 
-	return 0;
+	return EXIT_SUCCESS;
 }

pivot_root.c

@@ -2,6 +2,7 @@
 #include <sys/syscall.h>
 #include <unistd.h>
 #include <stdio.h>
+#include <stdlib.h>
 #include "util.h"
 
 static void
@@ -24,5 +25,5 @@ main(int argc, char *argv[])
 	if (syscall(SYS_pivot_root, argv[0], argv[1]) < 0)
 		eprintf("pivot_root:");
 
-	return 0;
+	return EXIT_SUCCESS;
 }

ps.c

@@ -53,7 +53,7 @@ main(int argc, char *argv[])
 	else
 		printf("UID        PID  PPID  C STIME TTY          TIME CMD\n");
 	recurse("/proc", psr);
-	return 0;
+	return EXIT_SUCCESS;
 }
 
 static void

rmmod.c

@@ -3,6 +3,7 @@
 #include <unistd.h>
 #include <fcntl.h>
 #include <stdio.h>
+#include <stdlib.h>
 #include <string.h>
 #include <libgen.h>
 #include "util.h"
@@ -43,5 +44,5 @@ main(int argc, char *argv[])
 			eprintf("delete_module:");
 	}
 
-	return 0;
+	return EXIT_SUCCESS;
 }

swapoff.c

@@ -2,6 +2,7 @@
 #include <sys/swap.h>
 #include <errno.h>
 #include <stdio.h>
+#include <stdlib.h>
 #include <string.h>
 #include "util.h"
 
@@ -15,7 +16,7 @@ int
 main(int argc, char *argv[])
 {
 	int i;
-	int ret = 0;
+	int ret = EXIT_SUCCESS;
 
 	ARGBEGIN {
 	default:
@@ -30,7 +31,7 @@ main(int argc, char *argv[])
 		if (ret < 0) {
 			fprintf(stderr, "swapoff %s: %s\n",
 				argv[i], strerror(errno));
-			ret = 1;
+			ret = EXIT_FAILURE;
 		}
 	}
 	return ret;

swapon.c

@@ -2,6 +2,7 @@
 #include <sys/swap.h>
 #include <errno.h>
 #include <stdio.h>
+#include <stdlib.h>
 #include <string.h>
 #include "util.h"
 
@@ -15,7 +16,7 @@ int
 main(int argc, char *argv[])
 {
 	int i;
-	int ret = 0;
+	int ret = EXIT_SUCCESS;
 	int flags = 0;
 
 	ARGBEGIN {
@@ -34,7 +35,7 @@ main(int argc, char *argv[])
 		if (ret < 0) {
 			fprintf(stderr, "swapon %s: %s\n",
 				argv[i], strerror(errno));
-			ret = 1;
+			ret = EXIT_FAILURE;
 		}
 	}
 	return ret;

truncate.c

@@ -42,5 +42,5 @@ main(int argc, char *argv[])
 			eprintf("ftruncate: %s:", argv[i]);
 		close(fd);
 	}
-	return 0;
+	return EXIT_SUCCESS;
 }

umount.c

@@ -1,6 +1,7 @@
 /* See LICENSE file for copyright and license details. */
 #include <sys/mount.h>
 #include <stdio.h>
+#include <stdlib.h>
 #include "util.h"
 
 static void
@@ -14,7 +15,7 @@ main(int argc, char *argv[])
 {
 	int i;
 	int flags = 0;
-	int ret = 0;
+	int ret = EXIT_SUCCESS;
 
 	ARGBEGIN {
 	case 'f':
@@ -35,7 +36,7 @@ main(int argc, char *argv[])
 	for (i = 0; i < argc; i++) {
 		if (umount2(argv[i], flags) < 0)
 			eprintf("umount2:");
-		ret = 1;
+		ret = EXIT_FAILURE;
 	}
 	return ret;
 }

unshare.c

@@ -3,6 +3,7 @@
 #include <errno.h>
 #include <unistd.h>
 #include <stdio.h>
+#include <stdlib.h>
 #include <string.h>
 #include "util.h"
 
@@ -49,5 +50,5 @@ main(int argc, char *argv[])
 	if (execvp(argv[0], argv) < 0)
 		eprintf("execvp:");
 
-	return 0;
+	return EXIT_SUCCESS;
 }

uptime.c

@@ -64,5 +64,5 @@ main(int argc, char *argv[])
 	       info.loads[1] / 65536.0f,
 	       info.loads[2] / 65536.0f);
 
-	return 0;
+	return EXIT_SUCCESS;
 }

watch.c

@@ -43,5 +43,5 @@ main(int argc, char *argv[])
 		system(cmd);
 		sleep(interval);
 	}
-	return 0;
+	return EXIT_SUCCESS;
 }