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[Qemu-devel] [RFC PATCH v5 19/24] replay: check return values of fwrite
From: |
Pavel Dovgalyuk |
Subject: |
[Qemu-devel] [RFC PATCH v5 19/24] replay: check return values of fwrite |
Date: |
Tue, 23 Jan 2018 11:55:05 +0300 |
User-agent: |
StGit/0.17.1-dirty |
This patch adds error reporting when fwrite cannot completely
save the buffer to the file.
Signed-off-by: Pavel Dovgalyuk <address@hidden>
--
v3: also check putc() return value
---
replay/replay-internal.c | 17 +++++++++++++++--
1 file changed, 15 insertions(+), 2 deletions(-)
diff --git a/replay/replay-internal.c b/replay/replay-internal.c
index a1a7686..1034d8f 100644
--- a/replay/replay-internal.c
+++ b/replay/replay-internal.c
@@ -24,12 +24,23 @@
static QemuMutex lock;
/* File for replay writing */
+static bool write_error;
FILE *replay_file;
+static void replay_write_error(void)
+{
+ if (!write_error) {
+ error_report("replay write error");
+ write_error = true;
+ }
+}
+
void replay_put_byte(uint8_t byte)
{
if (replay_file) {
- putc(byte, replay_file);
+ if (putc(byte, replay_file) == EOF) {
+ replay_write_error();
+ }
}
}
@@ -62,7 +73,9 @@ void replay_put_array(const uint8_t *buf, size_t size)
{
if (replay_file) {
replay_put_dword(size);
- fwrite(buf, 1, size, replay_file);
+ if (fwrite(buf, 1, size, replay_file) != size) {
+ replay_write_error();
+ }
}
}
- [Qemu-devel] [RFC PATCH v5 09/24] replay: save prior value of the host clock, (continued)
- [Qemu-devel] [RFC PATCH v5 09/24] replay: save prior value of the host clock, Pavel Dovgalyuk, 2018/01/23
- [Qemu-devel] [RFC PATCH v5 10/24] target/arm/arm-powertctl: drop BQL assertions, Pavel Dovgalyuk, 2018/01/23
- [Qemu-devel] [RFC PATCH v5 11/24] cpus: push BQL lock to qemu_*_wait_io_event, Pavel Dovgalyuk, 2018/01/23
- [Qemu-devel] [RFC PATCH v5 12/24] hax: remove BQL lock/unlock, Pavel Dovgalyuk, 2018/01/23
- [Qemu-devel] [RFC PATCH v5 13/24] kvm: remove BQL lock/unlock, Pavel Dovgalyuk, 2018/01/23
- [Qemu-devel] [RFC PATCH v5 14/24] replay/replay.c: bump REPLAY_VERSION again, Pavel Dovgalyuk, 2018/01/23
- [Qemu-devel] [RFC PATCH v5 15/24] replay/replay-internal.c: track holding of replay_lock, Pavel Dovgalyuk, 2018/01/23
- [Qemu-devel] [RFC PATCH v5 16/24] replay: make locking visible outside replay code, Pavel Dovgalyuk, 2018/01/23
- [Qemu-devel] [RFC PATCH v5 17/24] replay: push replay_mutex_lock up the call tree, Pavel Dovgalyuk, 2018/01/23
- [Qemu-devel] [RFC PATCH v5 18/24] replay: don't destroy mutex at exit, Pavel Dovgalyuk, 2018/01/23
- [Qemu-devel] [RFC PATCH v5 19/24] replay: check return values of fwrite,
Pavel Dovgalyuk <=
- [Qemu-devel] [RFC PATCH v5 20/24] replay: avoid recursive call of checkpoints, Pavel Dovgalyuk, 2018/01/23
- [Qemu-devel] [RFC PATCH v5 22/24] replay: don't process async events when warping the clock, Pavel Dovgalyuk, 2018/01/23
- [Qemu-devel] [RFC PATCH v5 21/24] scripts/replay-dump.py: replay log dumper, Pavel Dovgalyuk, 2018/01/23
- [Qemu-devel] [RFC PATCH v5 23/24] replay: save vmstate of the asynchronous events, Pavel Dovgalyuk, 2018/01/23
- [Qemu-devel] [RFC PATCH v5 24/24] replay: don't drain/flush bdrv queue while RR is working, Pavel Dovgalyuk, 2018/01/23
- Re: [Qemu-devel] [RFC PATCH v5 00/24] replay additions, no-reply, 2018/01/23
- Re: [Qemu-devel] [RFC PATCH v5 00/24] replay additions, Pavel Dovgalyuk, 2018/01/30