dynamically allocate buffer

[project/umbim.git] / mbim-dev.c

diff --git a/mbim-dev.c b/mbim-dev.c
index d986cbe..34bb2c2 100644 (file)
--- a/mbim-dev.c
+++ b/mbim-dev.c
@@ -25,7 +25,8 @@
 
 #include "mbim.h"
 
-uint8_t mbim_buffer[MBIM_BUFFER_SIZE];
+size_t mbim_bufsize = 0;
+uint8_t *mbim_buffer = NULL;
 static struct uloop_fd mbim_fd;
 static uint32_t expected;
 int no_close;
@@ -33,7 +34,7 @@ int no_close;
 static void mbim_msg_tout_cb(struct uloop_timeout *t)
 {
        fprintf(stderr, "ERROR: mbim message timeout\n");
-       uloop_end();
+       mbim_end();
 }
 
 static struct uloop_timeout tout = {
@@ -46,7 +47,7 @@ mbim_send(void)
        struct mbim_message_header *hdr = (struct mbim_message_header *) mbim_buffer;
        int ret = 0;
 
-       if (le32toh(hdr->length) > MBIM_BUFFER_SIZE) {
+       if (le32toh(hdr->length) > mbim_bufsize) {
                fprintf(stderr, "message too big %d\n", le32toh(hdr->length));
                return -1;
        }
@@ -74,7 +75,7 @@ mbim_send(void)
 static void
 mbim_recv(struct uloop_fd *u, unsigned int events)
 {
-       ssize_t cnt = read(u->fd, mbim_buffer, MBIM_BUFFER_SIZE);
+       ssize_t cnt = read(u->fd, mbim_buffer, mbim_bufsize);
        struct mbim_message_header *hdr = (struct mbim_message_header *) mbim_buffer;
        struct command_done_message *msg = (struct command_done_message *) (hdr + 1);
        int i;
@@ -118,7 +119,7 @@ mbim_recv(struct uloop_fd *u, unsigned int events)
                mbim_send_close_msg();
                break;
        case MBIM_MESSAGE_TYPE_CLOSE_DONE:
-               uloop_end();
+               mbim_end();
                break;
        case MBIM_MESSAGE_TYPE_FUNCTION_ERROR:
                no_close = 0;
@@ -137,5 +138,18 @@ mbim_open(const char *path)
                perror("open failed: ");
                exit(-1);
        }
+       mbim_bufsize = MBIM_BUFFER_SIZE;
+       mbim_buffer = malloc(mbim_bufsize);
        uloop_fd_add(&mbim_fd, ULOOP_READ);
 }
+
+void
+mbim_end(void)
+{
+       if (mbim_buffer) {
+               free(mbim_buffer);
+               mbim_bufsize = 0;
+               mbim_buffer = NULL;
+       }
+       uloop_end();
+}