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Diffstat (limited to 'extras/multipath-tools/libdevmapper/libdm-common.c')
-rw-r--r--extras/multipath-tools/libdevmapper/libdm-common.c382
1 files changed, 0 insertions, 382 deletions
diff --git a/extras/multipath-tools/libdevmapper/libdm-common.c b/extras/multipath-tools/libdevmapper/libdm-common.c
deleted file mode 100644
index b0affd1eed..0000000000
--- a/extras/multipath-tools/libdevmapper/libdm-common.c
+++ /dev/null
@@ -1,382 +0,0 @@
-/*
- * Copyright (C) 2001 Sistina Software (UK) Limited.
- *
- * This file is released under the LGPL.
- */
-
-#include "libdm-targets.h"
-#include "libdm-common.h"
-#include "list.h"
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <stdarg.h>
-#include <string.h>
-#include <sys/param.h>
-#include <sys/stat.h>
-#include <unistd.h>
-#include <errno.h>
-#include <linux/dm-ioctl.h>
-#include <linux/kdev_t.h>
-
-#define DEV_DIR "/dev/"
-
-static char _dm_dir[PATH_MAX] = DEV_DIR DM_DIR;
-
-static int _verbose = 0;
-
-/*
- * Library users can provide their own logging
- * function.
- */
-static void _default_log(int level, const char *file, int line,
- const char *f, ...)
-{
- va_list ap;
-
- if (level > _LOG_WARN && !_verbose)
- return;
-
- va_start(ap, f);
-
- if (level < _LOG_WARN)
- vfprintf(stderr, f, ap);
- else
- vprintf(f, ap);
-
- va_end(ap);
-
- if (level < _LOG_WARN)
- fprintf(stderr, "\n");
- else
- fprintf(stdout, "\n");
-}
-
-dm_log_fn _log = _default_log;
-
-void dm_log_init(dm_log_fn fn)
-{
- _log = fn;
-}
-
-void dm_log_init_verbose(int level)
-{
- _verbose = level;
-}
-
-static void _build_dev_path(char *buffer, size_t len, const char *dev_name)
-{
- /* If there's a /, assume caller knows what they're doing */
- if (strchr(dev_name, '/'))
- snprintf(buffer, len, "%s", dev_name);
- else
- snprintf(buffer, len, "%s/%s", _dm_dir, dev_name);
-}
-
-int dm_get_library_version(char *version, size_t size)
-{
- strncpy(version, DM_LIB_VERSION, size);
- return 1;
-}
-
-struct dm_task *dm_task_create(int type)
-{
- struct dm_task *dmt = malloc(sizeof(*dmt));
-
- if (!dm_check_version())
- return NULL;
-
- if (!dmt) {
- log_error("dm_task_create: malloc(%d) failed", sizeof(*dmt));
- return NULL;
- }
-
- memset(dmt, 0, sizeof(*dmt));
-
- dmt->type = type;
- dmt->minor = -1;
- dmt->major = -1;
-
- return dmt;
-}
-
-int dm_task_set_name(struct dm_task *dmt, const char *name)
-{
- char *pos;
- char path[PATH_MAX];
- struct stat st1, st2;
-
- if (dmt->dev_name) {
- free(dmt->dev_name);
- dmt->dev_name = NULL;
- }
-
- /* If path was supplied, remove it if it points to the same device
- * as its last component.
- */
- if ((pos = strrchr(name, '/'))) {
- snprintf(path, sizeof(path), "%s/%s", _dm_dir, pos + 1);
-
- if (stat(name, &st1) || stat(path, &st2) ||
- !(st1.st_dev == st2.st_dev)) {
- log_error("dm_task_set_name: Device %s not found",
- name);
- return 0;
- }
-
- name = pos + 1;
- }
-
- if (!(dmt->dev_name = strdup(name))) {
- log_error("dm_task_set_name: strdup(%s) failed", name);
- return 0;
- }
-
- return 1;
-}
-
-int dm_task_set_uuid(struct dm_task *dmt, const char *uuid)
-{
- if (dmt->uuid) {
- free(dmt->uuid);
- dmt->uuid = NULL;
- }
-
- if (!(dmt->uuid = strdup(uuid))) {
- log_error("dm_task_set_uuid: strdup(%s) failed", uuid);
- return 0;
- }
-
- return 1;
-}
-
-int dm_task_set_major(struct dm_task *dmt, int major)
-{
- dmt->major = major;
- log_debug("Setting major: %d", dmt->major);
-
- return 1;
-}
-
-int dm_task_set_minor(struct dm_task *dmt, int minor)
-{
- dmt->minor = minor;
- log_debug("Setting minor: %d", dmt->minor);
-
- return 1;
-}
-
-int dm_task_add_target(struct dm_task *dmt, uint64_t start, uint64_t size,
- const char *ttype, const char *params)
-{
- struct target *t = create_target(start, size, ttype, params);
-
- if (!t)
- return 0;
-
- if (!dmt->head)
- dmt->head = dmt->tail = t;
- else {
- dmt->tail->next = t;
- dmt->tail = t;
- }
-
- return 1;
-}
-
-static int _add_dev_node(const char *dev_name, uint32_t major, uint32_t minor)
-{
- char path[PATH_MAX];
- struct stat info;
- dev_t dev = MKDEV(major, minor);
-
- _build_dev_path(path, sizeof(path), dev_name);
-
- if (stat(path, &info) >= 0) {
- if (!S_ISBLK(info.st_mode)) {
- log_error("A non-block device file at '%s' "
- "is already present", path);
- return 0;
- }
-
- if (info.st_rdev == dev)
- return 1;
-
- if (unlink(path) < 0) {
- log_error("Unable to unlink device node for '%s'",
- dev_name);
- return 0;
- }
- }
-
- if (mknod(path, S_IFBLK | S_IRUSR | S_IWUSR | S_IRGRP, dev) < 0) {
- log_error("Unable to make device node for '%s'", dev_name);
- return 0;
- }
-
- return 1;
-}
-
-static int _rename_dev_node(const char *old_name, const char *new_name)
-{
- char oldpath[PATH_MAX];
- char newpath[PATH_MAX];
- struct stat info;
-
- _build_dev_path(oldpath, sizeof(oldpath), old_name);
- _build_dev_path(newpath, sizeof(newpath), new_name);
-
- if (stat(newpath, &info) == 0) {
- if (!S_ISBLK(info.st_mode)) {
- log_error("A non-block device file at '%s' "
- "is already present", newpath);
- return 0;
- }
-
- if (unlink(newpath) < 0) {
- if (errno == EPERM) {
- /* devfs, entry has already been renamed */
- return 1;
- }
- log_error("Unable to unlink device node for '%s'",
- new_name);
- return 0;
- }
- }
-
- if (rename(oldpath, newpath) < 0) {
- log_error("Unable to rename device node from '%s' to '%s'",
- old_name, new_name);
- return 0;
- }
-
- return 1;
-}
-
-static int _rm_dev_node(const char *dev_name)
-{
- char path[PATH_MAX];
- struct stat info;
-
- _build_dev_path(path, sizeof(path), dev_name);
-
- if (stat(path, &info) < 0)
- return 1;
-
- if (unlink(path) < 0) {
- log_error("Unable to unlink device node for '%s'", dev_name);
- return 0;
- }
-
- return 1;
-}
-
-typedef enum {
- NODE_ADD,
- NODE_DEL,
- NODE_RENAME
-} node_op_t;
-
-static int _do_node_op(node_op_t type, const char *dev_name, uint32_t major,
- uint32_t minor, const char *old_name)
-{
- switch (type) {
- case NODE_ADD:
- return _add_dev_node(dev_name, major, minor);
- case NODE_DEL:
- return _rm_dev_node(dev_name);
- case NODE_RENAME:
- return _rename_dev_node(old_name, dev_name);
- }
-
- return 1;
-}
-
-static LIST_INIT(_node_ops);
-
-struct node_op_parms {
- struct list list;
- node_op_t type;
- char *dev_name;
- uint32_t major;
- uint32_t minor;
- char *old_name;
- char names[0];
-};
-
-static void _store_str(char **pos, char **ptr, const char *str)
-{
- strcpy(*pos, str);
- *ptr = *pos;
- *pos += strlen(*ptr) + 1;
-}
-
-static int _stack_node_op(node_op_t type, const char *dev_name, uint32_t major,
- uint32_t minor, const char *old_name)
-{
- struct node_op_parms *nop;
- size_t len = strlen(dev_name) + strlen(old_name) + 2;
- char *pos;
-
- if (!(nop = malloc(sizeof(*nop) + len))) {
- log_error("Insufficient memory to stack mknod operation");
- return 0;
- }
-
- pos = nop->names;
- nop->type = type;
- nop->major = major;
- nop->minor = minor;
-
- _store_str(&pos, &nop->dev_name, dev_name);
- _store_str(&pos, &nop->old_name, old_name);
-
- list_add(&_node_ops, &nop->list);
-
- return 1;
-}
-
-static void _pop_node_ops(void)
-{
- struct list *noph, *nopht;
- struct node_op_parms *nop;
-
- list_iterate_safe(noph, nopht, &_node_ops) {
- nop = list_item(noph, struct node_op_parms);
- _do_node_op(nop->type, nop->dev_name, nop->major, nop->minor,
- nop->old_name);
- list_del(&nop->list);
- free(nop);
- }
-}
-
-int add_dev_node(const char *dev_name, uint32_t major, uint32_t minor)
-{
- return _stack_node_op(NODE_ADD, dev_name, major, minor, "");
-}
-
-int rename_dev_node(const char *old_name, const char *new_name)
-{
- return _stack_node_op(NODE_RENAME, new_name, 0, 0, old_name);
-}
-
-int rm_dev_node(const char *dev_name)
-{
- return _stack_node_op(NODE_DEL, dev_name, 0, 0, "");
-}
-
-void update_devs(void)
-{
- _pop_node_ops();
-}
-
-int dm_set_dev_dir(const char *dir)
-{
- snprintf(_dm_dir, sizeof(_dm_dir), "%s%s", dir, DM_DIR);
- return 1;
-}
-
-const char *dm_dir(void)
-{
- return _dm_dir;
-}