fix a bug where `which' doesn't check whether the file passed as an argument

is a regular file, patch by Arthur Othieno

diff --git a/debianutils/which.c b/debianutils/which.c
index 27646d5..120f1e7 100644 (file)
--- a/debianutils/which.c
+++ b/debianutils/which.c
@@ -30,7 +30,9 @@ static int file_exists(char *file)
 {
        struct stat filestat;
 
-       if (stat(file, &filestat) == 0 && filestat.st_mode & S_IXUSR)
+       if (stat(file, &filestat) == 0 &&
+                       S_ISREG(filestat.st_mode) &&
+                       filestat.st_mode & S_IXUSR)
                return 1;
        else
                return 0;