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qga: Extract qmp_guest_file_read() to common commands.c

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Extract the common code shared by both POSIX/Win32 implementations.

Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
This commit is contained in:
Philippe Mathieu-Daudé 2020-04-14 15:30:43 +02:00 • committed by Michael Roth
parent 5d3586b834
commit ead83a136d
4 changed files with 35 additions and 36 deletions
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20
qga/commands-win32.c
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@ -322,33 +322,19 @@ void qmp_guest_shutdown(bool has_mode, const char *mode, Error **errp)
}
}
GuestFileRead *qmp_guest_file_read(int64_t handle, bool has_count,
int64_t count, Error **errp)
GuestFileRead *guest_file_read_unsafe(GuestFileHandle *gfh,
int64_t count, Error **errp)
{
GuestFileRead *read_data = NULL;
guchar *buf;
HANDLE fh;
HANDLE fh = gfh->fh;
bool is_ok;
DWORD read_count;
GuestFileHandle *gfh = guest_file_handle_find(handle, errp);
if (!gfh) {
return NULL;
}
if (!has_count) {
count = QGA_READ_COUNT_DEFAULT;
} else if (count < 0 || count >= UINT32_MAX) {
error_setg(errp, "value '%" PRId64
"' is invalid for argument count", count);
return NULL;
}
fh = gfh->fh;
buf = g_malloc0(count + 1);
is_ok = ReadFile(fh, buf, count, &read_count, NULL);
if (!is_ok) {
error_setg_win32(errp, GetLastError(), "failed to read file");
slog("guest-file-read failed, handle %" PRId64, handle);
} else {
buf[read_count] = 0;
read_data = g_new0(GuestFileRead, 1);