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hw/i386/pc.c: Don't use load_image() 

The load_image() function is deprecated, as it does not let the
caller specify how large the buffer to read the file into is.
Use the glib g_file_get_contents() function instead, which does
the whole "allocate memory for the file and read it in" operation.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-id: 20181130151712.2312-6-peter.maydell@linaro.org
This commit is contained in:
Peter Maydell 2018-12-14 13:30:51 +00:00
parent 36bde0911f
commit c24323dd5f
1 changed files with 12 additions and 10 deletions
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22
hw/i386/pc.c
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@ -839,10 +839,9 @@ static void load_linux(PCMachineState *pcms,
{
uint16_t protocol;
int setup_size, kernel_size, cmdline_size;
int64_t initrd_size = 0;
int dtb_size, setup_data_offset;
uint32_t initrd_max;
uint8_t header[8192], *setup, *kernel, *initrd_data;
uint8_t header[8192], *setup, *kernel;
hwaddr real_addr, prot_addr, cmdline_addr, initrd_addr = 0;
FILE *f;
char *vmode;
@ -965,27 +964,30 @@ static void load_linux(PCMachineState *pcms,
/* load initrd */
if (initrd_filename) {
gsize initrd_size;
gchar *initrd_data;
GError *gerr = NULL;
if (protocol < 0x200) {
fprintf(stderr, "qemu: linux kernel too old to load a ram disk\n");
exit(1);
}
initrd_size = get_image_size(initrd_filename);
if (initrd_size < 0) {
if (!g_file_get_contents(initrd_filename, &initrd_data,
&initrd_size, &gerr)) {
fprintf(stderr, "qemu: error reading initrd %s: %s\n",
initrd_filename, strerror(errno));
initrd_filename, gerr->message);
exit(1);
} else if (initrd_size >= initrd_max) {
}
if (initrd_size >= initrd_max) {
fprintf(stderr, "qemu: initrd is too large, cannot support."
"(max: %"PRIu32", need %"PRId64")\n", initrd_max, initrd_size);
"(max: %"PRIu32", need %"PRId64")\n",
initrd_max, (uint64_t)initrd_size);
exit(1);
}
initrd_addr = (initrd_max-initrd_size) & ~4095;
initrd_data = g_malloc(initrd_size);
load_image(initrd_filename, initrd_data);
fw_cfg_add_i32(fw_cfg, FW_CFG_INITRD_ADDR, initrd_addr);
fw_cfg_add_i32(fw_cfg, FW_CFG_INITRD_SIZE, initrd_size);
fw_cfg_add_bytes(fw_cfg, FW_CFG_INITRD_DATA, initrd_data, initrd_size);