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| | #include "stdio_impl.h"
#include <stdlib.h>
static void dummy(FILE *f) { }
weak_alias(dummy, __unlist_locked_file);
int fclose(FILE *f)
{
int r;
FLOCK(f);
r = fflush(f);
r |= f->close(f);
FUNLOCK(f);
/* Past this point, f is closed and any further explict access
* to it is undefined. However, it still exists as an entry in
* the open file list and possibly in the thread's locked files
* list, if it was closed while explicitly locked. Functions
* which process these lists must tolerate dead FILE objects
* (which necessarily have inactive buffer pointers) without
* producing any side effects. */
if (f->flags & F_PERM) return r;
__unlist_locked_file(f);
FILE **head = __ofl_lock();
if (f->prev) f->prev->next = f->next;
if (f->next) f->next->prev = f->prev;
if (*head == f) *head = f->next;
__ofl_unlock();
free(f->getln_buf);
free(f);
return r;
}
|