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dump-guest-memory: cleanup: removing dump_{error|cleanup}(). 

It might be a little bit confusing and error prone to do
dump_cleanup() in these two functions. A better way is to do
dump_cleanup() before dump finish, no matter whether dump has
succeeded or not.

Signed-off-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Message-Id: <1455772616-8668-2-git-send-email-peterx@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Peter Xu 2016-02-18 13:16:46 +08:00 committed by Paolo Bonzini
parent cf7ea1e60c
commit e3517a5299
1 changed files with 32 additions and 46 deletions
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78
dump.c
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@ -82,12 +82,6 @@ static int dump_cleanup(DumpState *s)
return 0;
}
static void dump_error(DumpState *s, const char *reason, Error **errp)
{
dump_cleanup(s);
error_setg(errp, "%s", reason);
}
static int fd_write_vmcore(const void *buf, size_t size, void *opaque)
{
DumpState *s = opaque;
@ -128,7 +122,7 @@ static void write_elf64_header(DumpState *s, Error **errp)
ret = fd_write_vmcore(&elf_header, sizeof(elf_header), s);
if (ret < 0) {
dump_error(s, "dump: failed to write elf header", errp);
error_setg(errp, "dump: failed to write elf header");
}
}
@ -159,7 +153,7 @@ static void write_elf32_header(DumpState *s, Error **errp)
ret = fd_write_vmcore(&elf_header, sizeof(elf_header), s);
if (ret < 0) {
dump_error(s, "dump: failed to write elf header", errp);
error_setg(errp, "dump: failed to write elf header");
}
}
@ -182,7 +176,7 @@ static void write_elf64_load(DumpState *s, MemoryMapping *memory_mapping,
ret = fd_write_vmcore(&phdr, sizeof(Elf64_Phdr), s);
if (ret < 0) {
dump_error(s, "dump: failed to write program header table", errp);
error_setg(errp, "dump: failed to write program header table");
}
}
@ -205,7 +199,7 @@ static void write_elf32_load(DumpState *s, MemoryMapping *memory_mapping,
ret = fd_write_vmcore(&phdr, sizeof(Elf32_Phdr), s);
if (ret < 0) {
dump_error(s, "dump: failed to write program header table", errp);
error_setg(errp, "dump: failed to write program header table");
}
}
@ -225,7 +219,7 @@ static void write_elf64_note(DumpState *s, Error **errp)
ret = fd_write_vmcore(&phdr, sizeof(Elf64_Phdr), s);
if (ret < 0) {
dump_error(s, "dump: failed to write program header table", errp);
error_setg(errp, "dump: failed to write program header table");
}
}
@ -245,7 +239,7 @@ static void write_elf64_notes(WriteCoreDumpFunction f, DumpState *s,
id = cpu_index(cpu);
ret = cpu_write_elf64_note(f, cpu, id, s);
if (ret < 0) {
dump_error(s, "dump: failed to write elf notes", errp);
error_setg(errp, "dump: failed to write elf notes");
return;
}
}
@ -253,7 +247,7 @@ static void write_elf64_notes(WriteCoreDumpFunction f, DumpState *s,
CPU_FOREACH(cpu) {
ret = cpu_write_elf64_qemunote(f, cpu, s);
if (ret < 0) {
dump_error(s, "dump: failed to write CPU status", errp);
error_setg(errp, "dump: failed to write CPU status");
return;
}
}
@ -275,7 +269,7 @@ static void write_elf32_note(DumpState *s, Error **errp)
ret = fd_write_vmcore(&phdr, sizeof(Elf32_Phdr), s);
if (ret < 0) {
dump_error(s, "dump: failed to write program header table", errp);
error_setg(errp, "dump: failed to write program header table");
}
}
@ -290,7 +284,7 @@ static void write_elf32_notes(WriteCoreDumpFunction f, DumpState *s,
id = cpu_index(cpu);
ret = cpu_write_elf32_note(f, cpu, id, s);
if (ret < 0) {
dump_error(s, "dump: failed to write elf notes", errp);
error_setg(errp, "dump: failed to write elf notes");
return;
}
}
@ -298,7 +292,7 @@ static void write_elf32_notes(WriteCoreDumpFunction f, DumpState *s,
CPU_FOREACH(cpu) {
ret = cpu_write_elf32_qemunote(f, cpu, s);
if (ret < 0) {
dump_error(s, "dump: failed to write CPU status", errp);
error_setg(errp, "dump: failed to write CPU status");
return;
}
}
@ -326,7 +320,7 @@ static void write_elf_section(DumpState *s, int type, Error **errp)
ret = fd_write_vmcore(&shdr, shdr_size, s);
if (ret < 0) {
dump_error(s, "dump: failed to write section header table", errp);
error_setg(errp, "dump: failed to write section header table");
}
}
@ -336,7 +330,7 @@ static void write_data(DumpState *s, void *buf, int length, Error **errp)
ret = fd_write_vmcore(buf, length, s);
if (ret < 0) {
dump_error(s, "dump: failed to save memory", errp);
error_setg(errp, "dump: failed to save memory");
}
}
@ -568,11 +562,6 @@ static void dump_begin(DumpState *s, Error **errp)
}
}
static void dump_completed(DumpState *s)
{
dump_cleanup(s);
}
static int get_next_block(DumpState *s, GuestPhysBlock *block)
{
while (1) {
@ -624,8 +613,6 @@ static void dump_iterate(DumpState *s, Error **errp)
}
} while (!get_next_block(s, block));
dump_completed(s);
}
static void create_vmcore(DumpState *s, Error **errp)
@ -765,7 +752,7 @@ static void create_header32(DumpState *s, Error **errp)
dh->status = cpu_to_dump32(s, status);
if (write_buffer(s->fd, 0, dh, size) < 0) {
dump_error(s, "dump: failed to write disk dump header", errp);
error_setg(errp, "dump: failed to write disk dump header");
goto out;
}
@ -784,7 +771,7 @@ static void create_header32(DumpState *s, Error **errp)
if (write_buffer(s->fd, DISKDUMP_HEADER_BLOCKS *
block_size, kh, size) < 0) {
dump_error(s, "dump: failed to write kdump sub header", errp);
error_setg(errp, "dump: failed to write kdump sub header");
goto out;
}
@ -800,7 +787,7 @@ static void create_header32(DumpState *s, Error **errp)
}
if (write_buffer(s->fd, offset_note, s->note_buf,
s->note_size) < 0) {
dump_error(s, "dump: failed to write notes", errp);
error_setg(errp, "dump: failed to write notes");
goto out;
}
@ -865,7 +852,7 @@ static void create_header64(DumpState *s, Error **errp)
dh->status = cpu_to_dump32(s, status);
if (write_buffer(s->fd, 0, dh, size) < 0) {
dump_error(s, "dump: failed to write disk dump header", errp);
error_setg(errp, "dump: failed to write disk dump header");
goto out;
}
@ -884,7 +871,7 @@ static void create_header64(DumpState *s, Error **errp)
if (write_buffer(s->fd, DISKDUMP_HEADER_BLOCKS *
block_size, kh, size) < 0) {
dump_error(s, "dump: failed to write kdump sub header", errp);
error_setg(errp, "dump: failed to write kdump sub header");
goto out;
}
@ -901,7 +888,7 @@ static void create_header64(DumpState *s, Error **errp)
if (write_buffer(s->fd, offset_note, s->note_buf,
s->note_size) < 0) {
dump_error(s, "dump: failed to write notes", errp);
error_setg(errp, "dump: failed to write notes");
goto out;
}
@ -1087,7 +1074,7 @@ static void write_dump_bitmap(DumpState *s, Error **errp)
while (get_next_page(&block_iter, &pfn, NULL, s)) {
ret = set_dump_bitmap(last_pfn, pfn, true, dump_bitmap_buf, s);
if (ret < 0) {
dump_error(s, "dump: failed to set dump_bitmap", errp);
error_setg(errp, "dump: failed to set dump_bitmap");
goto out;
}
@ -1104,7 +1091,7 @@ static void write_dump_bitmap(DumpState *s, Error **errp)
ret = set_dump_bitmap(last_pfn, last_pfn + bits_per_buf, false,
dump_bitmap_buf, s);
if (ret < 0) {
dump_error(s, "dump: failed to sync dump_bitmap", errp);
error_setg(errp, "dump: failed to sync dump_bitmap");
goto out;
}
}
@ -1237,7 +1224,7 @@ static void write_dump_pages(DumpState *s, Error **errp)
ret = write_cache(&page_data, buf, s->dump_info.page_size, false);
g_free(buf);
if (ret < 0) {
dump_error(s, "dump: failed to write page data (zero page)", errp);
error_setg(errp, "dump: failed to write page data (zero page)");
goto out;
}
@ -1253,7 +1240,7 @@ static void write_dump_pages(DumpState *s, Error **errp)
ret = write_cache(&page_desc, &pd_zero, sizeof(PageDescriptor),
false);
if (ret < 0) {
dump_error(s, "dump: failed to write page desc", errp);
error_setg(errp, "dump: failed to write page desc");
goto out;
}
} else {
@ -1278,7 +1265,7 @@ static void write_dump_pages(DumpState *s, Error **errp)
ret = write_cache(&page_data, buf_out, size_out, false);
if (ret < 0) {
dump_error(s, "dump: failed to write page data", errp);
error_setg(errp, "dump: failed to write page data");
goto out;
}
#ifdef CONFIG_LZO
@ -1291,7 +1278,7 @@ static void write_dump_pages(DumpState *s, Error **errp)
ret = write_cache(&page_data, buf_out, size_out, false);
if (ret < 0) {
dump_error(s, "dump: failed to write page data", errp);
error_setg(errp, "dump: failed to write page data");
goto out;
}
#endif
@ -1305,7 +1292,7 @@ static void write_dump_pages(DumpState *s, Error **errp)
ret = write_cache(&page_data, buf_out, size_out, false);
if (ret < 0) {
dump_error(s, "dump: failed to write page data", errp);
error_setg(errp, "dump: failed to write page data");
goto out;
}
#endif
@ -1321,7 +1308,7 @@ static void write_dump_pages(DumpState *s, Error **errp)
ret = write_cache(&page_data, buf,
s->dump_info.page_size, false);
if (ret < 0) {
dump_error(s, "dump: failed to write page data", errp);
error_setg(errp, "dump: failed to write page data");
goto out;
}
}
@ -1333,7 +1320,7 @@ static void write_dump_pages(DumpState *s, Error **errp)
ret = write_cache(&page_desc, &pd, sizeof(PageDescriptor), false);
if (ret < 0) {
dump_error(s, "dump: failed to write page desc", errp);
error_setg(errp, "dump: failed to write page desc");
goto out;
}
}
@ -1341,12 +1328,12 @@ static void write_dump_pages(DumpState *s, Error **errp)
ret = write_cache(&page_desc, NULL, 0, true);
if (ret < 0) {
dump_error(s, "dump: failed to sync cache for page_desc", errp);
error_setg(errp, "dump: failed to sync cache for page_desc");
goto out;
}
ret = write_cache(&page_data, NULL, 0, true);
if (ret < 0) {
dump_error(s, "dump: failed to sync cache for page_data", errp);
error_setg(errp, "dump: failed to sync cache for page_data");
goto out;
}
@ -1390,7 +1377,7 @@ static void create_kdump_vmcore(DumpState *s, Error **errp)
ret = write_start_flat_header(s->fd);
if (ret < 0) {
dump_error(s, "dump: failed to write start flat header", errp);
error_setg(errp, "dump: failed to write start flat header");
return;
}
@ -1414,11 +1401,9 @@ static void create_kdump_vmcore(DumpState *s, Error **errp)
ret = write_end_flat_header(s->fd);
if (ret < 0) {
dump_error(s, "dump: failed to write end flat header", errp);
error_setg(errp, "dump: failed to write end flat header");
return;
}
dump_completed(s);
}
static ram_addr_t get_start_block(DumpState *s)
@ -1706,6 +1691,7 @@ void qmp_dump_guest_memory(bool paging, const char *file, bool has_begin,
create_vmcore(s, errp);
}
dump_cleanup(s);
g_free(s);
}