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authorDees Troy <dees_troy@teamw.in>2013-02-27 19:39:14 +0100
committerGerrit Code Review <gerrit@5.9.244.119>2013-02-27 19:39:14 +0100
commit2cf31af56114cf997b10218db7c35ee047f5d400 (patch)
tree85f3b51e45ff8233922f2c0c151299868ca89371 /libblkid/closestream.h
parentlibtar - Fix extraction of hardlinks to use the prefix (diff)
parentuse libblkid to get filesystem type (diff)
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Diffstat (limited to 'libblkid/closestream.h')
-rw-r--r--libblkid/closestream.h51
1 files changed, 51 insertions, 0 deletions
diff --git a/libblkid/closestream.h b/libblkid/closestream.h
new file mode 100644
index 000000000..d61b83b5e
--- /dev/null
+++ b/libblkid/closestream.h
@@ -0,0 +1,51 @@
+#ifndef UTIL_LINUX_CLOSESTREAM_H
+#define UTIL_LINUX_CLOSESTREAM_H
+
+#include <stdio.h>
+#ifdef HAVE_STDIO_EXT_H
+#include <stdio_ext.h>
+#endif
+#include <unistd.h>
+
+#include "c.h"
+#include "nls.h"
+
+#ifndef HAVE___FPENDING
+static inline int
+__fpending(FILE *stream __attribute__((__unused__)))
+{
+ return 0;
+}
+#endif
+
+static inline int
+close_stream(FILE * stream)
+{
+ const int some_pending = (__fpending(stream) != 0);
+ const int prev_fail = (ferror(stream) != 0);
+ const int fclose_fail = (fclose(stream) != 0);
+ if (prev_fail || (fclose_fail && (some_pending || errno != EBADF))) {
+ if (!fclose_fail)
+ errno = 0;
+ return EOF;
+ }
+ return 0;
+}
+
+/* Meant to be used atexit(close_stdout); */
+static inline void
+close_stdout(void)
+{
+ if (close_stream(stdout) != 0 && !(errno == EPIPE)) {
+ if (errno)
+ warn(_("write error"));
+ else
+ warnx(_("write error"));
+ _exit(EXIT_FAILURE);
+ }
+
+ if (close_stream(stderr) != 0)
+ _exit(EXIT_FAILURE);
+}
+
+#endif /* UTIL_LINUX_CLOSESTREAM_H */