[hackers] [sbase] Use xrealpath() in du(1) || sin

[git]

commit 5be9c21ce43b028fb27b51cb7a7c02e05736f002
Author: sin <s...@2f30.org>
Date:   Thu Jan 23 21:16:05 2014 +0000

    Use xrealpath() in du(1)

diff --git a/du.c b/du.c
index e250e0c..c6289cd 100644
--- a/du.c
+++ b/du.c
@@ -26,6 +26,17 @@ usage(void)
        eprintf("usage: %s [-a | -s] [-k] [file...]
", argv0);
 }
 
+static char *
+xrealpath(const char *pathname, char *resolved)
+{
+       char *r;
+
+       r = realpath(pathname, resolved);
+       if (!r)
+               eprintf("realpath: %s:");
+       return r;
+}
+
 int
 main(int argc, char *argv[])
 {
@@ -59,12 +70,12 @@ main(int argc, char *argv[])
        if (argc < 1) {
                n = du(".");
                if (sflag)
-                       print(n, realpath(".", file));
+                       print(n, xrealpath(".", file));
        } else {
                for (; argc > 0; argc--, argv++) {
                        n = du(argv[0]);
                        if (sflag)
-                               print(n, realpath(argv[0], file));
+                               print(n, xrealpath(argv[0], file));
                }
        }
        return EXIT_SUCCESS;
@@ -142,7 +153,7 @@ du(const char *path)
                                             cwd, dent->d_name) >= sizeof(file))
                                        enprintf(EXIT_FAILURE, "path too long
");
                        } else {
-                               realpath(dent->d_name, file);
+                               xrealpath(dent->d_name, file);
                        }
                        print(m, file);
                }
@@ -152,6 +163,6 @@ du(const char *path)
 
 done:
        if (!sflag)
-               print(n, realpath(path, file));
+               print(n, xrealpath(path, file));
        return n;
 }