commit - 1115ad3a8de82a7059b834dc980d31c3d43c2c7b
commit + 44121ddf9f1fabdd3e85b8a8cdbfa27245f902c7
blob - e063ce55e231c9aeb46fa18f868804d10676bf15
blob + b8555e87ca541cdabe8ccbc609f16a6ff126ec65
--- ChangeLog.md
+++ ChangeLog.md
@@ -19,6 +19,7 @@ and this project adheres to [Semantic Versioning](http
   and disks can have a label but partitions don't
   (at least through the disklabel interface).
 - Print fancy unicode characters by default.
+- Use err(3) instead of die()
 
 ### Removed
 - Options:
blob - 060bc89a75870ac5592955670542c92e70c69d89
blob + 0328e8c612b9e2a393f234d2cc0dc62c84bde83d
--- lsblk.c
+++ lsblk.c
@@ -35,23 +35,7 @@
 #include <stdio.h>
 #include <fcntl.h>
 #include <errno.h>
-
-static __dead void die (const char *fmt, ...)
-{
-    va_list ap;
-
-    va_start (ap, fmt);
-    fputs ("Error: ", stderr);
-    vfprintf (stderr, fmt, ap);
-
-    if (errno != 0) {
-        fprintf (stderr, ": %s\n", strerror (errno));
-    } else {
-        fputc ('\n', stderr);
-    }
-
-    exit (1);
-}
+#include <err.h>
 
 static int diskcount (void)
 {
@@ -60,7 +44,7 @@ static int diskcount (void)
     size_t len = sizeof diskcount;
 
     if (sysctl (mib, 2, &diskcount, &len, NULL, 0) == -1)
-        die ("sysctl(hw.diskcount)");
+        err (1, "sysctl(hw.diskcount)");
 
     return diskcount;
 }
@@ -73,7 +57,7 @@ static char *disknames (void)
     char *buffer = malloc (len);
 
     if (sysctl (mib, 2, buffer, &len, NULL, 0) == -1)
-        die ("sysctl(hw.disknames)");
+        err (1, "sysctl(hw.disknames)");
 
     return buffer;
 }
@@ -287,7 +271,7 @@ static const struct statfs *find_mount (const char *de
     if (!mounts) {
         n_mounts = getmntinfo (&mounts, MNT_NOWAIT);
         if (n_mounts == 0)
-            die ("getmntinfo()");
+            err (1, "getmntinfo()");
     }
 
     for (int i = 0; i < n_mounts; ++i) {
@@ -312,9 +296,9 @@ static struct my_diskinfo read_disk (const char *name)
         asprintf (&path, "/dev/%sc", name);
         fd = open (path, O_RDONLY);
         if (fd < 0)
-            die ("open(%s)", path);
+            err (1, "opendev(%s)", name);
         if (ioctl (fd, DIOCGDINFO, &label) < 0)
-            die ("ioctl(%s, DIOCGDINFO)", path);
+            err (1, "ioctl(%s, DIOCGDINFO)", name);
         close (fd);
         free (path);
     }
@@ -376,10 +360,10 @@ int main (int argc, char *argv[])
     int options = 0;
 
     if (unveil ("/dev", "r") == -1)
-        die ("unveil(/dev)");
+        err (1, "unveil(/dev)");
 
     if (unveil (NULL, NULL) == -1)
-        die ("unveil()");
+        err (1, "unveil()");
 
     while ((option = getopt (argc, argv, ":ainUuV")) != -1) {
         switch (option) {
@@ -412,7 +396,7 @@ int main (int argc, char *argv[])
     char *names = argc == 0 ? disknames () : NULL;
 
     if (pledge ("stdio rpath disklabel", NULL) == -1)
-        die ("pledge()");
+        err (1, "pledge()");
 
     size_t cap_disks;
     if (argc == 0) {