1#include "stdio_impl.h"
 2#include <stdlib.h>
 3
 4static void dummy(FILE *f) { }
 5weak_alias(dummy, __unlist_locked_file);
 6
 7int fclose(FILE *f)
 8{
 9	int r;
10	
11	FLOCK(f);
12	r = fflush(f);
13	r |= f->close(f);
14	FUNLOCK(f);
15
16	/* Past this point, f is closed and any further explict access
17	 * to it is undefined. However, it still exists as an entry in
18	 * the open file list and possibly in the thread's locked files
19	 * list, if it was closed while explicitly locked. Functions
20	 * which process these lists must tolerate dead FILE objects
21	 * (which necessarily have inactive buffer pointers) without
22	 * producing any side effects. */
23
24	if (f->flags & F_PERM) return r;
25
26	__unlist_locked_file(f);
27
28	FILE **head = __ofl_lock();
29	if (f->prev) f->prev->next = f->next;
30	if (f->next) f->next->prev = f->prev;
31	if (*head == f) *head = f->next;
32	__ofl_unlock();
33
34	free(f->getln_buf);
35	free(f);
36
37	return r;
38}