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author | Peter Rajnoha <prajnoha@redhat.com> | 2009-10-26 14:29:33 +0000 |
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committer | Peter Rajnoha <prajnoha@redhat.com> | 2009-10-26 14:29:33 +0000 |
commit | 421671b1c2aadc9babe96e353b788feaf272a832 (patch) | |
tree | 79709de1851201be14e59fe2622faf4240f6a17b /libdm/libdm-common.h | |
parent | 5a3bd513803db04c70a14a1d4d9085b437ecdd4b (diff) | |
download | lvm2-421671b1c2aadc9babe96e353b788feaf272a832.tar.gz lvm2-421671b1c2aadc9babe96e353b788feaf272a832.tar.xz lvm2-421671b1c2aadc9babe96e353b788feaf272a832.zip |
Several changes to udev support code:
- we have these levels when the udev rules are processed:
10-dm.rules --> [11-dm-<subsystem>.rules] --> [12-dm-permissions.rules] -->
13-dm-disk.rules --> [...all the other foreign rules...] --> 95-dm-notify.rules
- each level can be disabled now by
DM_UDEV_DISABLE_{DM, SUBSYSTEM, DISK, OTHER}_RULES_FLAG
- add DM_UDEV_DISABLE_DM_RULES_FLAG to disable 10-dm.rules
- add DM_UDEV_DISABLE_OTHER_RULES_FLAG to disable all the other (non-dm) rules.
We cutoff these rules by using the 'last_rule', so this one should really be
used with great care and in well-founded situations. We use this for lvm's
hidden and layer devices now.
- add a parameter for add_dev_node, rm_dev_node and rename_dev_node so it's
possible to switch on/off udev checks
- use DM_UDEV_DISABLE_DM_RULES_FLAG and DM_UDEV_DISABLE_SUBSYSTEM_RULES_FLAG
if there's no cookie set and we have resume, remove and rename ioctl.
This could happen when someone uses the libdevmapper that is compiled with
udev_sync but the software does not make use of it. This way we can switch
off the rules and fallback to libdevmapper node creation so there's no
udev/libdevmapper race.
Diffstat (limited to 'libdm/libdm-common.h')
-rw-r--r-- | libdm/libdm-common.h | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/libdm/libdm-common.h b/libdm/libdm-common.h index 9f11902e..fcb334f8 100644 --- a/libdm/libdm-common.h +++ b/libdm/libdm-common.h @@ -23,9 +23,10 @@ struct target *create_target(uint64_t start, const char *type, const char *params); int add_dev_node(const char *dev_name, uint32_t minor, uint32_t major, - uid_t uid, gid_t gid, mode_t mode); -int rm_dev_node(const char *dev_name); -int rename_dev_node(const char *old_name, const char *new_name); + uid_t uid, gid_t gid, mode_t mode, int check_udev); +int rm_dev_node(const char *dev_name, int check_udev); +int rename_dev_node(const char *old_name, const char *new_name, + int check_udev); int get_dev_node_read_ahead(const char *dev_name, uint32_t *read_ahead); int set_dev_node_read_ahead(const char *dev_name, uint32_t read_ahead, uint32_t read_ahead_flags); |