mk: build with _GNU_SOURCE defined by default

[dpdk.git] / buildtools / pmdinfogen / pmdinfogen.c

diff --git a/buildtools/pmdinfogen/pmdinfogen.c b/buildtools/pmdinfogen/pmdinfogen.c
index 45b2673..dc0b6d5 100644 (file)
--- a/buildtools/pmdinfogen/pmdinfogen.c
+++ b/buildtools/pmdinfogen/pmdinfogen.c
@@ -8,7 +8,6 @@
  *
  */
 
-#define _GNU_SOURCE
 #include <stdio.h>
 #include <ctype.h>
 #include <string.h>
@@ -50,20 +49,24 @@ static void *grab_file(const char *filename, unsigned long *size)
                /* from stdin, use a temporary file to mmap */
                FILE *infile;
                char buffer[1024];
-               size_t n;
+               int n;
 
                infile = tmpfile();
                if (infile == NULL) {
                        perror("tmpfile");
                        return NULL;
                }
-               while (!feof(stdin)) {
-                       n = fread(buffer, 1, sizeof(buffer), stdin);
-                       if (fwrite(buffer, 1, n, infile) != n)
+               fd = dup(fileno(infile));
+               fclose(infile);
+               if (fd < 0)
+                       return NULL;
+
+               n = read(STDIN_FILENO, buffer, sizeof(buffer));
+               while (n > 0) {
+                       if (write(fd, buffer, n) != n)
                                goto failed;
+                       n = read(STDIN_FILENO, buffer, sizeof(buffer));
                }
-               fflush(infile);
-               fd = fileno(infile);
        }
 
        if (fstat(fd, &st))