# HG changeset patch
# User Ian Campbell <ian.campbell@xxxxxxxxxx>
# Date 1283519033 -3600
# Node ID de66ba50997cd8670fceffa7b01b50704f82edc7
# Parent 75d86afe717e84ad04b0b16190b182553980e0c7
libxc: use a switch statement in xc_domain_restore.c::pagebuf_get_one.
Signed-off-by: Ian Campbell <ian.campbell@xxxxxxxxxx>
diff -r 75d86afe717e -r de66ba50997c tools/libxc/xc_domain_restore.c
--- a/tools/libxc/xc_domain_restore.c Fri Sep 03 14:03:52 2010 +0100
+++ b/tools/libxc/xc_domain_restore.c Fri Sep 03 14:03:53 2010 +0100
@@ -680,14 +680,18 @@ static int pagebuf_get_one(xc_interface
// DPRINTF("reading batch of %d pages\n", count);
- if (!count) {
+ switch ( count )
+ {
+ case 0:
// DPRINTF("Last batch read\n");
return 0;
- } else if (count == XC_SAVE_ID_ENABLE_VERIFY_MODE) {
+
+ case XC_SAVE_ID_ENABLE_VERIFY_MODE:
DPRINTF("Entering page verify mode\n");
buf->verify = 1;
return pagebuf_get_one(xch, ctx, buf, fd, dom);
- } else if (count == XC_SAVE_ID_VCPU_INFO) {
+
+ case XC_SAVE_ID_VCPU_INFO:
buf->new_ctxt_format = 1;
if ( RDEXACT(fd, &buf->max_vcpu_id, sizeof(buf->max_vcpu_id)) ||
buf->max_vcpu_id >= 64 || RDEXACT(fd, &buf->vcpumap,
@@ -697,7 +701,8 @@ static int pagebuf_get_one(xc_interface
}
// DPRINTF("Max VCPU ID: %d, vcpumap: %llx\n", buf->max_vcpu_id,
buf->vcpumap);
return pagebuf_get_one(xch, ctx, buf, fd, dom);
- } else if (count == XC_SAVE_ID_HVM_IDENT_PT) {
+
+ case XC_SAVE_ID_HVM_IDENT_PT:
/* Skip padding 4 bytes then read the EPT identity PT location. */
if ( RDEXACT(fd, &buf->identpt, sizeof(uint32_t)) ||
RDEXACT(fd, &buf->identpt, sizeof(uint64_t)) )
@@ -707,7 +712,8 @@ static int pagebuf_get_one(xc_interface
}
// DPRINTF("EPT identity map address: %llx\n", buf->identpt);
return pagebuf_get_one(xch, ctx, buf, fd, dom);
- } else if ( count == XC_SAVE_ID_HVM_VM86_TSS ) {
+
+ case XC_SAVE_ID_HVM_VM86_TSS:
/* Skip padding 4 bytes then read the vm86 TSS location. */
if ( RDEXACT(fd, &buf->vm86_tss, sizeof(uint32_t)) ||
RDEXACT(fd, &buf->vm86_tss, sizeof(uint64_t)) )
@@ -717,21 +723,24 @@ static int pagebuf_get_one(xc_interface
}
// DPRINTF("VM86 TSS location: %llx\n", buf->vm86_tss);
return pagebuf_get_one(xch, ctx, buf, fd, dom);
- } else if ( count == XC_SAVE_ID_TMEM ) {
+
+ case XC_SAVE_ID_TMEM:
DPRINTF("xc_domain_restore start tmem\n");
if ( xc_tmem_restore(xch, dom, fd) ) {
PERROR("error reading/restoring tmem");
return -1;
}
return pagebuf_get_one(xch, ctx, buf, fd, dom);
- }
- else if ( count == XC_SAVE_ID_TMEM_EXTRA ) {
+
+ case XC_SAVE_ID_TMEM_EXTRA:
if ( xc_tmem_restore_extra(xch, dom, fd) ) {
PERROR("error reading/restoring tmem extra");
return -1;
}
return pagebuf_get_one(xch, ctx, buf, fd, dom);
- } else if ( count == XC_SAVE_ID_TSC_INFO ) {
+
+ case XC_SAVE_ID_TSC_INFO:
+ {
uint32_t tsc_mode, khz, incarn;
uint64_t nsec;
if ( RDEXACT(fd, &tsc_mode, sizeof(uint32_t)) ||
@@ -743,7 +752,9 @@ static int pagebuf_get_one(xc_interface
return -1;
}
return pagebuf_get_one(xch, ctx, buf, fd, dom);
- } else if (count == XC_SAVE_ID_HVM_CONSOLE_PFN ) {
+ }
+
+ case XC_SAVE_ID_HVM_CONSOLE_PFN :
/* Skip padding 4 bytes then read the console pfn location. */
if ( RDEXACT(fd, &buf->console_pfn, sizeof(uint32_t)) ||
RDEXACT(fd, &buf->console_pfn, sizeof(uint64_t)) )
@@ -753,10 +764,14 @@ static int pagebuf_get_one(xc_interface
}
// DPRINTF("console pfn location: %llx\n", buf->console_pfn);
return pagebuf_get_one(xch, ctx, buf, fd, dom);
- } else if ( (count > MAX_BATCH_SIZE) || (count < 0) ) {
- ERROR("Max batch size exceeded (%d). Giving up.", count);
- errno = EMSGSIZE;
- return -1;
+
+ default:
+ if ( (count > MAX_BATCH_SIZE) || (count < 0) ) {
+ ERROR("Max batch size exceeded (%d). Giving up.", count);
+ errno = EMSGSIZE;
+ return -1;
+ }
+ break;
}
oldcount = buf->nr_pages;
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