1 #include "stdio_impl.h" 2 #include <stdlib.h> 3 #ifndef __LITEOS__ 4 #include <errno.h> 5 #endif 6 dummy(FILE *f)7static void dummy(FILE *f) { } 8 weak_alias(dummy, __unlist_locked_file); 9 fclose(FILE *f)10int fclose(FILE *f) 11 { 12 int r; 13 14 FLOCK(f); 15 #ifndef __LITEOS__ 16 if (!f || f->fd < 0) { 17 errno = EBADF; 18 FUNLOCK(f); 19 return -EBADF; 20 } 21 #endif 22 23 r = fflush(f); 24 r |= f->close(f); 25 FUNLOCK(f); 26 27 /* Past this point, f is closed and any further explict access 28 * to it is undefined. However, it still exists as an entry in 29 * the open file list and possibly in the thread's locked files 30 * list, if it was closed while explicitly locked. Functions 31 * which process these lists must tolerate dead FILE objects 32 * (which necessarily have inactive buffer pointers) without 33 * producing any side effects. */ 34 35 if (f->flags & F_PERM) return r; 36 37 __unlist_locked_file(f); 38 39 free(f->getln_buf); 40 /* release base instead of buf which may be modified by setvbuf 41 * or iniitalize by local variable */ 42 free(f->base); 43 44 #ifndef __LITEOS__ 45 /* set file to invalid descriptor */ 46 f->fd = -EBADF; 47 #endif 48 49 __ofl_free(f); 50 51 return r; 52 } 53