diff options
author | Joel Becker <joel.becker@oracle.com> | 2008-05-30 15:30:49 -0700 |
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committer | Mark Fasheh <mfasheh@suse.com> | 2008-06-16 10:46:50 -0700 |
commit | 3878f110f71a0971ff7acc15dd6db711b6ef37c6 (patch) | |
tree | 39d5e1e8508cab23ba79c5da5abf897ca5843a9b /fs/ocfs2/stackglue.c | |
parent | 066519068ad2fbe98c7f45552b1f592903a9c8c8 (diff) | |
download | op-kernel-dev-3878f110f71a0971ff7acc15dd6db711b6ef37c6.zip op-kernel-dev-3878f110f71a0971ff7acc15dd6db711b6ef37c6.tar.gz |
ocfs2: Move the hb_ctl_path sysctl into the stack glue.
ocfs2 needs to call out to the hb_ctl program at unmount for all cluster
stacks. The first step is to move the hb_ctl_path sysctl out of the
o2cb code and into the generic stack glue.
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
Diffstat (limited to 'fs/ocfs2/stackglue.c')
-rw-r--r-- | fs/ocfs2/stackglue.c | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/fs/ocfs2/stackglue.c b/fs/ocfs2/stackglue.c index 119f60c..fb9b8e0 100644 --- a/fs/ocfs2/stackglue.c +++ b/fs/ocfs2/stackglue.c @@ -26,6 +26,7 @@ #include <linux/fs.h> #include <linux/kobject.h> #include <linux/sysfs.h> +#include <linux/sysctl.h> #include "ocfs2_fs.h" @@ -548,10 +549,92 @@ error: return ret; } +/* + * Sysctl bits + * + * The sysctl lives at /proc/sys/fs/ocfs2/nm/hb_ctl_path. The 'nm' doesn't + * make as much sense in a multiple cluster stack world, but it's safer + * and easier to preserve the name. + */ + +#define FS_OCFS2_NM 1 + +#define OCFS2_MAX_HB_CTL_PATH 256 +static char ocfs2_hb_ctl_path[OCFS2_MAX_HB_CTL_PATH] = "/sbin/ocfs2_hb_ctl"; + +static ctl_table ocfs2_nm_table[] = { + { + .ctl_name = 1, + .procname = "hb_ctl_path", + .data = ocfs2_hb_ctl_path, + .maxlen = OCFS2_MAX_HB_CTL_PATH, + .mode = 0644, + .proc_handler = &proc_dostring, + .strategy = &sysctl_string, + }, + { .ctl_name = 0 } +}; + +static ctl_table ocfs2_mod_table[] = { + { + .ctl_name = FS_OCFS2_NM, + .procname = "nm", + .data = NULL, + .maxlen = 0, + .mode = 0555, + .child = ocfs2_nm_table + }, + { .ctl_name = 0} +}; + +static ctl_table ocfs2_kern_table[] = { + { + .ctl_name = FS_OCFS2, + .procname = "ocfs2", + .data = NULL, + .maxlen = 0, + .mode = 0555, + .child = ocfs2_mod_table + }, + { .ctl_name = 0} +}; + +static ctl_table ocfs2_root_table[] = { + { + .ctl_name = CTL_FS, + .procname = "fs", + .data = NULL, + .maxlen = 0, + .mode = 0555, + .child = ocfs2_kern_table + }, + { .ctl_name = 0 } +}; + +static struct ctl_table_header *ocfs2_table_header = NULL; + +const char *ocfs2_get_hb_ctl_path(void) +{ + return ocfs2_hb_ctl_path; +} +EXPORT_SYMBOL_GPL(ocfs2_get_hb_ctl_path); + + +/* + * Initialization + */ + static int __init ocfs2_stack_glue_init(void) { strcpy(cluster_stack_name, OCFS2_STACK_PLUGIN_O2CB); + ocfs2_table_header = register_sysctl_table(ocfs2_root_table); + if (!ocfs2_table_header) { + printk(KERN_ERR + "ocfs2 stack glue: unable to register sysctl\n"); + return -ENOMEM; /* or something. */ + } + return ocfs2_sysfs_init(); } @@ -559,6 +642,8 @@ static void __exit ocfs2_stack_glue_exit(void) { lproto = NULL; ocfs2_sysfs_exit(); + if (ocfs2_table_header) + unregister_sysctl_table(ocfs2_table_header); } MODULE_AUTHOR("Oracle"); |