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| author | Marc-André Lureau <marcandre.lureau@redhat.com> | 2015-11-25 13:59:11 +0100 |
|---|---|---|
| committer | Michael Roth <mdroth@linux.vnet.ibm.com> | 2015-11-25 17:56:31 -0600 |
| commit | 895b00f62a7e86724dc7352d67c7808d37366130 (patch) | |
| tree | 4262acf90a4eb9aca73245062014b5869f5b109e /migration/qemu-file-unix.c | |
| parent | f2b608ab80a336b0136d35d9b49419a917656d44 (diff) | |
| download | focaccia-qemu-895b00f62a7e86724dc7352d67c7808d37366130.tar.gz focaccia-qemu-895b00f62a7e86724dc7352d67c7808d37366130.zip | |
qga: flush explicitly when needed
According to the specification:
http://pubs.opengroup.org/onlinepubs/9699919799/functions/fopen.html
"the application shall ensure that output is not directly followed by
input without an intervening call to fflush() or to a file positioning
function (fseek(), fsetpos(), or rewind()), and input is not directly
followed by output without an intervening call to a file positioning
function, unless the input operation encounters end-of-file."
Without this change, an fwrite() followed by an fread() may lose the
previously written content, as shown in the following test.
Fixes:
https://bugzilla.redhat.com/show_bug.cgi?id=1210246
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
* don't confuse {write,read}() with f{write,read}() in
commit msg (Laszlo)
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Diffstat (limited to 'migration/qemu-file-unix.c')
0 files changed, 0 insertions, 0 deletions