mirror of
https://gitlab.com/procps-ng/procps.git
synced 2024-11-30 21:44:05 +08:00
838e5d8941
For portability, check for error.h during configure and define HAVE_ERROR_H accordingly. If this header is not available, emulate the functionality of error() from glibc with an inline wrapper in include/c.h.
56 lines
1.2 KiB
C
56 lines
1.2 KiB
C
#include <errno.h>
|
|
#ifdef HAVE_ERROR_H
|
|
# include <error.h>
|
|
#endif
|
|
#ifdef HAVE_STDIO_EXT_H
|
|
# include <stdio_ext.h>
|
|
#else
|
|
/* FIXME: use a more portable definition of __fpending() (from gnulib?) */
|
|
# include <stdio.h>
|
|
# define __fpending(fp) ((fp)->_p - (fp)->_bf._base)
|
|
#endif
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
|
|
#include "nls.h"
|
|
#include "fileutils.h"
|
|
#ifndef HAVE_ERROR_H
|
|
# include "c.h" /* for error() emulation */
|
|
#endif
|
|
|
|
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;
|
|
}
|
|
|
|
/* Use atexit(); */
|
|
void close_stdout(void)
|
|
{
|
|
if (close_stream(stdout) != 0 && !(errno == EPIPE)) {
|
|
char const *write_error = _("write error");
|
|
error(0, errno, "%s", write_error);
|
|
_exit(EXIT_FAILURE);
|
|
}
|
|
|
|
if (close_stream(stderr) != 0)
|
|
_exit(EXIT_FAILURE);
|
|
}
|
|
|
|
#ifdef TEST_PROGRAM
|
|
#include <stdio.h>
|
|
int main(int argc, char *argv[])
|
|
{
|
|
atexit(close_stdout);
|
|
printf("Hello, World!\n");
|
|
return EXIT_SUCCESS;
|
|
}
|
|
#endif /* TEST_PROGRAM */
|