From cd18720a294bd7244ffda719677dd9c737317b67 Mon Sep 17 00:00:00 2001 From: Anthony Liguori Date: Tue, 26 Mar 2013 10:04:17 -0500 Subject: char: introduce a blocking version of qemu_chr_fe_write Signed-off-by: Anthony Liguori --- qemu-char.c | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) (limited to 'qemu-char.c') diff --git a/qemu-char.c b/qemu-char.c index 4e011df3ec..936150fa73 100644 --- a/qemu-char.c +++ b/qemu-char.c @@ -140,6 +140,33 @@ int qemu_chr_fe_write(CharDriverState *s, const uint8_t *buf, int len) return s->chr_write(s, buf, len); } +int qemu_chr_fe_write_all(CharDriverState *s, const uint8_t *buf, int len) +{ + int offset = 0; + int res; + + while (offset < len) { + do { + res = s->chr_write(s, buf + offset, len - offset); + if (res == -1 && errno == EAGAIN) { + g_usleep(100); + } + } while (res == -1 && errno == EAGAIN); + + if (res == 0) { + break; + } + + if (res < 0) { + return res; + } + + offset += res; + } + + return offset; +} + int qemu_chr_fe_ioctl(CharDriverState *s, int cmd, void *arg) { if (!s->chr_ioctl) -- cgit v1.2.1