diff options
Diffstat (limited to 'qga/commands.c')
| -rw-r--r-- | qga/commands.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/qga/commands.c b/qga/commands.c index 5611117..efc8b90 100644 --- a/qga/commands.c +++ b/qga/commands.c @@ -11,6 +11,7 @@ */ #include "qemu/osdep.h" +#include "qemu/units.h" #include "guest-agent-core.h" #include "qga-qapi-commands.h" #include "qapi/error.h" @@ -24,6 +25,12 @@ #define GUEST_EXEC_MAX_OUTPUT (16*1024*1024) /* Allocation and I/O buffer for reading guest-exec out_data/err_data - 4KB */ #define GUEST_EXEC_IO_SIZE (4*1024) +/* + * Maximum file size to read - 48MB + * + * (48MB + Base64 3:4 overhead = JSON parser 64 MB limit) + */ +#define GUEST_FILE_READ_COUNT_MAX (48 * MiB) /* Note: in some situations, like with the fsfreeze, logging may be * temporarilly disabled. if it is necessary that a command be able @@ -560,7 +567,7 @@ GuestFileRead *qmp_guest_file_read(int64_t handle, bool has_count, } if (!has_count) { count = QGA_READ_COUNT_DEFAULT; - } else if (count < 0 || count >= UINT32_MAX) { + } else if (count < 0 || count > GUEST_FILE_READ_COUNT_MAX) { error_setg(errp, "value '%" PRId64 "' is invalid for argument count", count); return NULL; |