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author | bigbiff bigbiff <bigbiff@teamw.in> | 2013-02-23 02:55:50 +0100 |
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committer | bigbiff bigbiff <bigbiff@teamw.in> | 2013-02-25 15:06:46 +0100 |
commit | e60683a0d553b6488c564863f4e48954944fb0f8 (patch) | |
tree | 9364f97cb88b7c1359f5f06dfb32150a78168c31 /libblkid/closestream.h | |
parent | Fix building of updater for 4.2 environment (diff) | |
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Diffstat (limited to '')
-rw-r--r-- | libblkid/closestream.h | 51 |
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 */ |