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Viewing changes to lib/misc/lvm-wrappers.c

  • Committer: Bazaar Package Importer
  • Author(s): Bastian Blank
  • Date: 2011-08-27 18:45:21 UTC
  • mfrom: (1.1.12 upstream)
  • Revision ID: james.westby@ubuntu.com-20110827184521-8lpc2gqp2ybhplzj
Tags: 2.02.86-1
* New upstream version.
* Remove leading article from short description.
* Update udev rules.

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Lines of Context:
lib/misc/lvm-wrappers.c
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#include <unistd.h>
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#include <fcntl.h>
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#ifdef UDEV_SYNC_SUPPORT
 
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static const char _no_context_msg[] = "Udev library context not set.";
 
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struct udev *_udev;
 
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int udev_init_library_context(void)
 
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{
 
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        if (_udev)
 
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                udev_unref(_udev);
 
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        if (!(_udev = udev_new())) {
 
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                log_error("Failed to create udev library context.");
 
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                return 0;
 
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        }
 
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        return 1;
 
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}
 
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void udev_fin_library_context(void)
 
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{
 
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        udev_unref(_udev);
 
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        _udev = NULL;
 
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}
 
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int udev_is_running(void)
 
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{
 
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        struct udev_queue *udev_queue;
 
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        int r;
 
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        if (!_udev) {
 
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                log_debug(_no_context_msg);
 
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                goto bad;
 
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        }
 
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        if (!(udev_queue = udev_queue_new(_udev))) {
 
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                log_debug("Could not get udev state.");
 
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                goto bad;
 
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        }
 
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        r = udev_queue_get_udev_is_active(udev_queue);
 
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        udev_queue_unref(udev_queue);
 
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        return r;
 
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bad:
 
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        log_debug("Assuming udev is not running.");
 
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        return 0;
 
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}
 
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const char *udev_get_dev_dir(void)
 
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{
 
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        if (!_udev) {
 
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                log_debug(_no_context_msg);
 
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                return NULL;
 
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        }
 
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        return udev_get_dev_path(_udev);
 
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}
 
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struct udev* udev_get_library_context(void)
 
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{
 
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        return _udev;
 
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}
 
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#else   /* UDEV_SYNC_SUPPORT */
 
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int udev_init_library_context(void)
 
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{
 
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        return 1;
 
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}
 
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void udev_fin_library_context(void)
 
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{
 
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}
 
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int udev_is_running(void)
 
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{
 
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        return 0;
 
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}
 
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const char *udev_get_dev_dir(void)
 
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{
 
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        return NULL;
 
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}
 
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#endif
 
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int lvm_getpagesize(void)
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{
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        return getpagesize();