Commit 4835ef77 authored by qiaonuohan's avatar qiaonuohan Committed by Luiz Capitulino
Browse files

dump: add API to write elf notes to buffer 



the function can be used by write_elf32_notes/write_elf64_notes to write notes
to a buffer. If fd_write_vmcore is used, write_elf32_notes/write_elf64_notes
will write elf notes to vmcore directly. Instead, if buf_write_note is used,
elf notes will be written to opaque->note_buf at first.

Signed-off-by: default avatarQiao Nuohan <qiaonuohan@cn.fujitsu.com>
Reviewed-by: default avatarLaszlo Ersek <lersek@redhat.com>
Signed-off-by: default avatarLuiz Capitulino <lcapitulino@redhat.com>
parent 5d31babe

dump.c

+19 −0
Original line number Diff line number Diff line
@@ -76,6 +76,9 @@ typedef struct DumpState { 
    int64_t begin;

    int64_t length;

    Error **errp;



    uint8_t *note_buf;          /* buffer for notes */

    size_t note_buf_offset;     /* the writing place in note_buf */

} DumpState;



static int dump_cleanup(DumpState *s)
@@ -749,6 +752,22 @@ static int write_buffer(int fd, off_t offset, const void *buf, size_t size) 
    return 0;

}



static int buf_write_note(const void *buf, size_t size, void *opaque)

{

    DumpState *s = opaque;



    /* note_buf is not enough */

    if (s->note_buf_offset + size > s->note_size) {

        return -1;

    }



    memcpy(s->note_buf + s->note_buf_offset, buf, size);



    s->note_buf_offset += size;



    return 0;

}



static ram_addr_t get_start_block(DumpState *s)

{

    GuestPhysBlock *block;