X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=src%2Fstdio%2F__stdio_write.c;h=cef7bbdc37238cbc8607a0e09e68f1551567d1e5;hb=5271ff46b9e983bec5fd9ab79d5aaf096fa54157;hp=63d9c858db371486dcffb75279dbca559c2ca5ce;hpb=e3cd6c5c265cd481db6e0c5b529855d99f0bda30;p=musl

diff --git a/src/stdio/__stdio_write.c b/src/stdio/__stdio_write.c
index 63d9c858..cef7bbdc 100644
--- a/src/stdio/__stdio_write.c
+++ b/src/stdio/__stdio_write.c
@@ -1,4 +1,11 @@
 #include "stdio_impl.h"
+#include <pthread.h>
+
+static void cleanup(void *p)
+{
+	FILE *f = p;
+	if (!f->lockcount) __unlockfile(f);
+}
 
 size_t __stdio_write(FILE *f, const unsigned char *buf, size_t len)
 {
@@ -10,10 +17,19 @@ size_t __stdio_write(FILE *f, const unsigned char *buf, size_t len)
 	size_t rem = iov[0].iov_len + iov[1].iov_len;
 	int iovcnt = 2;
 	ssize_t cnt;
-	f->wpos = f->wbase;
 	for (;;) {
-		cnt = syscall(SYS_writev, f->fd, iov, iovcnt);
-		if (cnt == rem) return len;
+		if (libc.main_thread) {
+			pthread_cleanup_push(cleanup, f);
+			cnt = syscall_cp(SYS_writev, f->fd, iov, iovcnt);
+			pthread_cleanup_pop(0);
+		} else {
+			cnt = syscall(SYS_writev, f->fd, iov, iovcnt);
+		}
+		if (cnt == rem) {
+			f->wend = f->buf + f->buf_size;
+			f->wpos = f->wbase = f->buf;
+			return len;
+		}
 		if (cnt < 0) {
 			f->wpos = f->wbase = f->wend = 0;
 			f->flags |= F_ERR;
@@ -21,8 +37,11 @@ size_t __stdio_write(FILE *f, const unsigned char *buf, size_t len)
 		}
 		rem -= cnt;
 		if (cnt > iov[0].iov_len) {
+			f->wpos = f->wbase = f->buf;
 			cnt -= iov[0].iov_len;
 			iov++; iovcnt--;
+		} else if (iovcnt == 2) {
+			f->wbase += cnt;
 		}
 		iov[0].iov_base = (char *)iov[0].iov_base + cnt;
 		iov[0].iov_len -= cnt;