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Exclude v1 compatibility code when configured with --disable-compat

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[Use this with 2.6 kernels + device-mapper V4 interface]
CVS ----------------------------------------------------------------------
This commit is contained in:
Alasdair Kergon 2003-11-10 21:06:16 +00:00
parent e15846bf79
commit 488cc94f36
1 changed files with 81 additions and 45 deletions
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124
libdm/ioctl/libdevmapper.c
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@ -6,7 +6,10 @@
#include "libdm-targets.h"
#include "libdm-common.h"
#ifdef DM_COMPAT
# include "libdm-compat.h"
#endif
#include <stdio.h>
#include <stdlib.h>
@ -16,8 +19,11 @@
#include <dirent.h>
#include <errno.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <limits.h>
#include <linux/limits.h>
#include <linux/kdev_t.h>
#include <linux/dm-ioctl.h>
/*
* Ensure build compatibility.
@ -84,6 +90,56 @@ static void *_align(void *ptr, unsigned int a)
return (void *) (((unsigned long) ptr + agn) & ~agn);
}
static int _open_control(void)
{
char control[PATH_MAX];
if (_control_fd != -1)
return 1;
snprintf(control, sizeof(control), "%s/control", dm_dir());
if ((_control_fd = open(control, O_RDWR)) < 0) {
log_error("%s: open failed: %s", control, strerror(errno));
log_error("Is device-mapper driver missing from kernel?");
return 0;
}
return 1;
}
void dm_task_destroy(struct dm_task *dmt)
{
struct target *t, *n;
for (t = dmt->head; t; t = n) {
n = t->next;
free(t->params);
free(t->type);
free(t);
}
if (dmt->dev_name)
free(dmt->dev_name);
if (dmt->newname)
free(dmt->newname);
if (dmt->dmi.v4)
free(dmt->dmi.v4);
if (dmt->uuid)
free(dmt->uuid);
free(dmt);
}
/*
* Protocol Version 1 compatibility functions.
*/
#ifdef DM_COMPAT
static int _dm_task_get_driver_version_v1(struct dm_task *dmt, char *version,
size_t size)
{
@ -122,7 +178,8 @@ static int _unmarshal_status_v1(struct dm_task *dmt, struct dm_ioctl_v1 *dmi)
return 1;
}
static int _dm_format_dev_v1(char *buf, int bufsize, uint32_t dev_major, uint32_t dev_minor)
static int _dm_format_dev_v1(char *buf, int bufsize, uint32_t dev_major,
uint32_t dev_minor)
{
int r;
@ -365,24 +422,6 @@ static int _dm_names_v1(struct dm_ioctl_v1 *dmi)
return r;
}
static int _open_control(void)
{
char control[PATH_MAX];
if (_control_fd != -1)
return 1;
snprintf(control, sizeof(control), "%s/control", dm_dir());
if ((_control_fd = open(control, O_RDWR)) < 0) {
log_error("%s: open failed: %s", control, strerror(errno));
log_error("Is device-mapper driver missing from kernel?");
return 0;
}
return 1;
}
static int _dm_task_run_v1(struct dm_task *dmt)
{
struct dm_ioctl_v1 *dmi;
@ -460,38 +499,20 @@ static int _dm_task_run_v1(struct dm_task *dmt)
return 0;
}
void dm_task_destroy(struct dm_task *dmt)
{
struct target *t, *n;
#endif
for (t = dmt->head; t; t = n) {
n = t->next;
free(t->params);
free(t->type);
free(t);
}
if (dmt->dev_name)
free(dmt->dev_name);
if (dmt->newname)
free(dmt->newname);
if (dmt->dmi.v4)
free(dmt->dmi.v4);
if (dmt->uuid)
free(dmt->uuid);
free(dmt);
}
/*
* Protocol Version 4 functions.
*/
int dm_task_get_driver_version(struct dm_task *dmt, char *version, size_t size)
{
unsigned int *v;
#ifdef DM_COMPAT
if (_dm_version == 1)
return _dm_task_get_driver_version_v1(dmt, version, size);
#endif
if (!dmt->dmi.v4) {
version[0] = '\0';
@ -607,12 +628,15 @@ static int _unmarshal_status(struct dm_task *dmt, struct dm_ioctl *dmi)
return 1;
}
int dm_format_dev(char *buf, int bufsize, uint32_t dev_major, uint32_t dev_minor)
int dm_format_dev(char *buf, int bufsize, uint32_t dev_major,
uint32_t dev_minor)
{
int r;
#ifdef DM_COMPAT
if (_dm_version == 1)
return _dm_format_dev_v1(buf, bufsize, dev_major, dev_minor);
#endif
if (bufsize < 8)
return 0;
@ -626,8 +650,10 @@ int dm_format_dev(char *buf, int bufsize, uint32_t dev_major, uint32_t dev_minor
int dm_task_get_info(struct dm_task *dmt, struct dm_info *info)
{
#ifdef DM_COMPAT
if (_dm_version == 1)
return _dm_task_get_info_v1(dmt, info);
#endif
if (!dmt->dmi.v4)
return 0;
@ -654,24 +680,30 @@ int dm_task_get_info(struct dm_task *dmt, struct dm_info *info)
const char *dm_task_get_name(struct dm_task *dmt)
{
#ifdef DM_COMPAT
if (_dm_version == 1)
return _dm_task_get_name_v1(dmt);
#endif
return (dmt->dmi.v4->name);
}
const char *dm_task_get_uuid(struct dm_task *dmt)
{
#ifdef DM_COMPAT
if (_dm_version == 1)
return _dm_task_get_uuid_v1(dmt);
#endif
return (dmt->dmi.v4->uuid);
}
struct dm_deps *dm_task_get_deps(struct dm_task *dmt)
{
#ifdef DM_COMPAT
if (_dm_version == 1)
return _dm_task_get_deps_v1(dmt);
#endif
return (struct dm_deps *) (((void *) dmt->dmi.v4) +
dmt->dmi.v4->data_start);
@ -679,8 +711,10 @@ struct dm_deps *dm_task_get_deps(struct dm_task *dmt)
struct dm_names *dm_task_get_names(struct dm_task *dmt)
{
#ifdef DM_COMPAT
if (_dm_version == 1)
return _dm_task_get_names_v1(dmt);
#endif
return (struct dm_names *) (((void *) dmt->dmi.v4) +
dmt->dmi.v4->data_start);
@ -936,8 +970,10 @@ int dm_task_run(struct dm_task *dmt)
struct dm_ioctl *dmi;
unsigned int command;
#ifdef DM_COMPAT
if (_dm_version == 1)
return _dm_task_run_v1(dmt);
#endif
if ((unsigned) dmt->type >=
(sizeof(_cmd_data_v4) / sizeof(*_cmd_data_v4))) {