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libdaemon: move compare_config to lib

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so it can be used elsewhere.
This commit is contained in:
David Teigland 2015-06-17 13:06:37 -05:00
parent 0a203070f5
commit fd1376ebef
3 changed files with 59 additions and 57 deletions
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57
daemons/lvmetad/lvmetad-core.c
View File

@ -26,9 +26,6 @@
#include <stdint.h>
#include <unistd.h>
#include <math.h> /* fabs() */
#include <float.h> /* DBL_EPSILON */
#define LVMETAD_SOCKET DEFAULT_RUN_DIR "/lvmetad.socket"
typedef struct {
@ -569,60 +566,6 @@ bad:
return reply_fail("out of memory");
}
/* Test if the doubles are close enough to be considered equal */
static int close_enough(double d1, double d2)
{
return fabs(d1 - d2) < DBL_EPSILON;
}
static int compare_value(struct dm_config_value *a, struct dm_config_value *b)
{
int r = 0;
if (a->type > b->type)
return 1;
if (a->type < b->type)
return -1;
switch (a->type) {
case DM_CFG_STRING: r = strcmp(a->v.str, b->v.str); break;
case DM_CFG_FLOAT: r = close_enough(a->v.f, b->v.f) ? 0 : (a->v.f > b->v.f) ? 1 : -1; break;
case DM_CFG_INT: r = (a->v.i == b->v.i) ? 0 : (a->v.i > b->v.i) ? 1 : -1; break;
case DM_CFG_EMPTY_ARRAY: return 0;
}
if (r == 0 && a->next && b->next)
r = compare_value(a->next, b->next);
return r;
}
static int compare_config(struct dm_config_node *a, struct dm_config_node *b)
{
int result = 0;
if (a->v && b->v)
result = compare_value(a->v, b->v);
if (a->v && !b->v)
result = 1;
if (!a->v && b->v)
result = -1;
if (a->child && b->child)
result = compare_config(a->child, b->child);
if (result) {
// DEBUGLOG("config inequality at %s / %s", a->key, b->key);
return result;
}
if (a->sib && b->sib)
result = compare_config(a->sib, b->sib);
if (a->sib && !b->sib)
result = 1;
if (!a->sib && b->sib)
result = -1;
return result;
}
static int vg_remove_if_missing(lvmetad_state *s, const char *vgid, int update_pvids);
enum update_pvid_mode { UPDATE_ONLY, REMOVE_EMPTY, MARK_OUTDATED };

57
libdaemon/client/config-util.c
View File

@ -20,6 +20,9 @@
#include <string.h>
#include <unistd.h>
#include <math.h> /* fabs() */
#include <float.h> /* DBL_EPSILON */
int buffer_append_vf(struct buffer *buf, va_list ap)
{
char *append;
@ -277,6 +280,60 @@ struct dm_config_node *config_make_nodes(struct dm_config_tree *cft,
return res;
}
/* Test if the doubles are close enough to be considered equal */
static int close_enough(double d1, double d2)
{
return fabs(d1 - d2) < DBL_EPSILON;
}
static int compare_value(struct dm_config_value *a, struct dm_config_value *b)
{
int r = 0;
if (a->type > b->type)
return 1;
if (a->type < b->type)
return -1;
switch (a->type) {
case DM_CFG_STRING: r = strcmp(a->v.str, b->v.str); break;
case DM_CFG_FLOAT: r = close_enough(a->v.f, b->v.f) ? 0 : (a->v.f > b->v.f) ? 1 : -1; break;
case DM_CFG_INT: r = (a->v.i == b->v.i) ? 0 : (a->v.i > b->v.i) ? 1 : -1; break;
case DM_CFG_EMPTY_ARRAY: return 0;
}
if (r == 0 && a->next && b->next)
r = compare_value(a->next, b->next);
return r;
}
int compare_config(struct dm_config_node *a, struct dm_config_node *b)
{
int result = 0;
if (a->v && b->v)
result = compare_value(a->v, b->v);
if (a->v && !b->v)
result = 1;
if (!a->v && b->v)
result = -1;
if (a->child && b->child)
result = compare_config(a->child, b->child);
if (result) {
// DEBUGLOG("config inequality at %s / %s", a->key, b->key);
return result;
}
if (a->sib && b->sib)
result = compare_config(a->sib, b->sib);
if (a->sib && !b->sib)
result = 1;
if (!a->sib && b->sib)
result = -1;
return result;
}
int buffer_realloc(struct buffer *buf, int needed)
{
char *new;

2
libdaemon/client/config-util.h
View File

@ -46,6 +46,8 @@ struct dm_config_node *make_config_node(struct dm_config_tree *cft,
struct dm_config_node *parent,
struct dm_config_node *pre_sib);
int compare_config(struct dm_config_node *a, struct dm_config_node *b);
struct dm_config_node *make_text_node(struct dm_config_tree *cft,
const char *key,
const char *value,