xref: /aosp_15_r20/external/musl/src/stdio/__stdio_exit.c (revision c9945492fdd68bbe62686c5b452b4dc1be3f8453)
1*c9945492SAndroid Build Coastguard Worker #include "stdio_impl.h"
2*c9945492SAndroid Build Coastguard Worker 
3*c9945492SAndroid Build Coastguard Worker static FILE *volatile dummy_file = 0;
4*c9945492SAndroid Build Coastguard Worker weak_alias(dummy_file, __stdin_used);
5*c9945492SAndroid Build Coastguard Worker weak_alias(dummy_file, __stdout_used);
6*c9945492SAndroid Build Coastguard Worker weak_alias(dummy_file, __stderr_used);
7*c9945492SAndroid Build Coastguard Worker 
close_file(FILE * f)8*c9945492SAndroid Build Coastguard Worker static void close_file(FILE *f)
9*c9945492SAndroid Build Coastguard Worker {
10*c9945492SAndroid Build Coastguard Worker 	if (!f) return;
11*c9945492SAndroid Build Coastguard Worker 	FFINALLOCK(f);
12*c9945492SAndroid Build Coastguard Worker 	if (f->wpos != f->wbase) f->write(f, 0, 0);
13*c9945492SAndroid Build Coastguard Worker 	if (f->rpos != f->rend) f->seek(f, f->rpos-f->rend, SEEK_CUR);
14*c9945492SAndroid Build Coastguard Worker }
15*c9945492SAndroid Build Coastguard Worker 
__stdio_exit(void)16*c9945492SAndroid Build Coastguard Worker void __stdio_exit(void)
17*c9945492SAndroid Build Coastguard Worker {
18*c9945492SAndroid Build Coastguard Worker 	FILE *f;
19*c9945492SAndroid Build Coastguard Worker 	for (f=*__ofl_lock(); f; f=f->next) close_file(f);
20*c9945492SAndroid Build Coastguard Worker 	close_file(__stdin_used);
21*c9945492SAndroid Build Coastguard Worker 	close_file(__stdout_used);
22*c9945492SAndroid Build Coastguard Worker 	close_file(__stderr_used);
23*c9945492SAndroid Build Coastguard Worker }
24*c9945492SAndroid Build Coastguard Worker 
25*c9945492SAndroid Build Coastguard Worker weak_alias(__stdio_exit, __stdio_exit_needed);
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