LU-9160 libext2: readahead for meta_bg

[tools/e2fsprogs.git] / misc / blkid.c

diff --git a/misc/blkid.c b/misc/blkid.c
index c40de98..96fffae 100644 (file)
--- a/misc/blkid.c
+++ b/misc/blkid.c
@@ -100,19 +100,27 @@ static int get_terminal_width(void)
        struct winsize  w_win;
 #endif
         const char     *cp;
+       int width = 80;
 
 #ifdef TIOCGSIZE
-       if (ioctl (0, TIOCGSIZE, &t_win) == 0)
-               return (t_win.ts_cols);
+       if (ioctl (0, TIOCGSIZE, &t_win) == 0) {
+               width = t_win.ts_cols;
+               goto got_it;
+       }
 #endif
 #ifdef TIOCGWINSZ
-       if (ioctl (0, TIOCGWINSZ, &w_win) == 0)
-               return (w_win.ws_col);
+       if (ioctl (0, TIOCGWINSZ, &w_win) == 0) {
+               width = w_win.ws_col;
+               goto got_it;
+       }
 #endif
         cp = getenv("COLUMNS");
        if (cp)
-               return strtol(cp, NULL, 10);
-       return 80;
+               width = atoi(cp);
+got_it:
+       if (width > 4096)
+               return 4096;    /* sanity check */
+       return width;
 }
 
 static int pretty_print_word(const char *str, int max_len,
@@ -285,10 +293,7 @@ int main(int argc, char **argv)
        while ((c = getopt (argc, argv, "c:f:ghlLo:s:t:w:v")) != EOF)
                switch (c) {
                case 'c':
-                       if (optarg && !*optarg)
-                               read = NULL;
-                       else
-                               read = optarg;
+                       read = optarg;
                        if (!write)
                                write = read;
                        break;
@@ -341,10 +346,7 @@ int main(int argc, char **argv)
                        version = 1;
                        break;
                case 'w':
-                       if (optarg && !*optarg)
-                               write = NULL;
-                       else
-                               write = optarg;
+                       write = optarg;
                        break;
                case 'h':
                        err = 0;