From 17b2523ec40b033fbb55b2de113c394c862ccf5e Mon Sep 17 00:00:00 2001 From: Laszlo Ersek Date: Sat, 22 Mar 2014 03:31:01 +0100 Subject: [PATCH 10/30] dump: add API to write elf notes to buffer RH-Author: Laszlo Ersek Message-id: <1395459071-19118-10-git-send-email-lersek@redhat.com> Patchwork-id: 58219 O-Subject: [RHEL-6.6 qemu-kvm PATCH 09/19] dump: add API to write elf notes to buffer Bugzilla: 1035162 RH-Acked-by: Paolo Bonzini RH-Acked-by: Dr. David Alan Gilbert (git) RH-Acked-by: Luiz Capitulino From: qiaonuohan 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: Qiao Nuohan Reviewed-by: Laszlo Ersek Signed-off-by: Luiz Capitulino (cherry picked from commit 4835ef7784502c231f243c3133054850d23dd837) Signed-off-by: Laszlo Ersek --- dump.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) Signed-off-by: Miroslav Rezanina --- dump.c | 19 +++++++++++++++++++ 1 files changed, 19 insertions(+), 0 deletions(-) diff --git a/dump.c b/dump.c index 42dabe3..4853ea9 100644 --- a/dump.c +++ b/dump.c @@ -81,6 +81,9 @@ 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; -- 1.7.1