Author: trasz
Date: Sat Mar 27 18:04:33 2010
New Revision: 205768
URL: http://svn.freebsd.org/changeset/base/205768
Log:
MFC r199875:
Provide a set of sysctls and tunables to disable device node creation
for specific "kinds" of disk labels - for example, GPT UUIDs. Reason
for this is that sometimes, other GEOM classes attach to these device
nodes instead of the proper ones - e.g. they attach to /dev/gptid/XXX
instead of /dev/ada0p2, which is annoying.
Reviewed by: pjd (earlier version)
Modified:
stable/8/sys/geom/label/g_label.c
stable/8/sys/geom/label/g_label.h
stable/8/sys/geom/label/g_label_ext2fs.c
stable/8/sys/geom/label/g_label_gpt.c
stable/8/sys/geom/label/g_label_iso9660.c
stable/8/sys/geom/label/g_label_msdosfs.c
stable/8/sys/geom/label/g_label_ntfs.c
stable/8/sys/geom/label/g_label_reiserfs.c
stable/8/sys/geom/label/g_label_ufs.c
Directory Properties:
stable/8/sys/ (props changed)
stable/8/sys/amd64/include/xen/ (props changed)
stable/8/sys/cddl/contrib/opensolaris/ (props changed)
stable/8/sys/contrib/dev/acpica/ (props changed)
stable/8/sys/contrib/pf/ (props changed)
stable/8/sys/dev/xen/xenpci/ (props changed)
Modified: stable/8/sys/geom/label/g_label.c
==============================================================================
--- stable/8/sys/geom/label/g_label.c Sat Mar 27 18:01:38 2010
(r205767)
+++ stable/8/sys/geom/label/g_label.c Sat Mar 27 18:04:33 2010
(r205768)
@@ -34,7 +34,6 @@ __FBSDID("$FreeBSD$");
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/bio.h>
-#include <sys/sysctl.h>
#include <sys/malloc.h>
#include <sys/libkern.h>
#include <geom/geom.h>
@@ -316,6 +315,8 @@ g_label_taste(struct g_class *mp, struct
for (i = 0; g_labels[i] != NULL; i++) {
char label[64];
+ if (g_labels[i]->ld_enabled == 0)
+ continue;
g_topology_unlock();
g_labels[i]->ld_taste(cp, label, sizeof(label));
g_topology_lock();
Modified: stable/8/sys/geom/label/g_label.h
==============================================================================
--- stable/8/sys/geom/label/g_label.h Sat Mar 27 18:01:38 2010
(r205767)
+++ stable/8/sys/geom/label/g_label.h Sat Mar 27 18:04:33 2010
(r205768)
@@ -30,6 +30,9 @@
#define _G_LABEL_H_
#include <sys/endian.h>
+#ifdef _KERNEL
+#include <sys/sysctl.h>
+#endif
#define G_LABEL_CLASS_NAME "LABEL"
@@ -56,23 +59,34 @@ extern u_int g_label_debug;
} \
} while (0)
+SYSCTL_DECL(_kern_geom_label);
+
+#define G_LABEL_INIT(kind, label, descr)
\
+ SYSCTL_NODE(_kern_geom_label, OID_AUTO, kind, CTLFLAG_RD, \
+ NULL, ""); \
+ SYSCTL_INT(_kern_geom_label_##kind, OID_AUTO, enable, \
+ CTLFLAG_RW, &label.ld_enabled, 1, descr); \
+ TUNABLE_INT("kern.geom.label." __XSTRING(kind) ".enable", \
+ &label.ld_enabled)
+
typedef void g_label_taste_t (struct g_consumer *cp, char *label, size_t size);
struct g_label_desc {
g_label_taste_t *ld_taste;
char *ld_dir;
+ int ld_enabled;
};
/* Supported labels. */
-extern const struct g_label_desc g_label_ufs_id;
-extern const struct g_label_desc g_label_ufs_volume;
-extern const struct g_label_desc g_label_iso9660;
-extern const struct g_label_desc g_label_msdosfs;
-extern const struct g_label_desc g_label_ext2fs;
-extern const struct g_label_desc g_label_reiserfs;
-extern const struct g_label_desc g_label_ntfs;
-extern const struct g_label_desc g_label_gpt;
-extern const struct g_label_desc g_label_gpt_uuid;
+extern struct g_label_desc g_label_ufs_id;
+extern struct g_label_desc g_label_ufs_volume;
+extern struct g_label_desc g_label_iso9660;
+extern struct g_label_desc g_label_msdosfs;
+extern struct g_label_desc g_label_ext2fs;
+extern struct g_label_desc g_label_reiserfs;
+extern struct g_label_desc g_label_ntfs;
+extern struct g_label_desc g_label_gpt;
+extern struct g_label_desc g_label_gpt_uuid;
#endif /* _KERNEL */
struct g_label_metadata {
Modified: stable/8/sys/geom/label/g_label_ext2fs.c
==============================================================================
--- stable/8/sys/geom/label/g_label_ext2fs.c Sat Mar 27 18:01:38 2010
(r205767)
+++ stable/8/sys/geom/label/g_label_ext2fs.c Sat Mar 27 18:04:33 2010
(r205768)
@@ -86,7 +86,10 @@ exit_free:
g_free(fs);
}
-const struct g_label_desc g_label_ext2fs = {
+struct g_label_desc g_label_ext2fs = {
.ld_taste = g_label_ext2fs_taste,
- .ld_dir = "ext2fs"
+ .ld_dir = "ext2fs",
+ .ld_enabled = 1
};
+
+G_LABEL_INIT(ext2fs, g_label_ext2fs, "Create device nodes for EXT2FS volumes");
Modified: stable/8/sys/geom/label/g_label_gpt.c
==============================================================================
--- stable/8/sys/geom/label/g_label_gpt.c Sat Mar 27 18:01:38 2010
(r205767)
+++ stable/8/sys/geom/label/g_label_gpt.c Sat Mar 27 18:04:33 2010
(r205768)
@@ -153,12 +153,17 @@ g_label_gpt_uuid_taste(struct g_consumer
snprintf_uuid(label, size, &part_gpt_entry->ent.ent_uuid);
}
-const struct g_label_desc g_label_gpt = {
+struct g_label_desc g_label_gpt = {
.ld_taste = g_label_gpt_taste,
- .ld_dir = G_LABEL_GPT_VOLUME_DIR
+ .ld_dir = G_LABEL_GPT_VOLUME_DIR,
+ .ld_enabled = 1
};
-const struct g_label_desc g_label_gpt_uuid = {
+struct g_label_desc g_label_gpt_uuid = {
.ld_taste = g_label_gpt_uuid_taste,
- .ld_dir = G_LABEL_GPT_ID_DIR
+ .ld_dir = G_LABEL_GPT_ID_DIR,
+ .ld_enabled = 1
};
+
+G_LABEL_INIT(gpt, g_label_gpt, "Create device nodes for GPT labels");
+G_LABEL_INIT(gptid, g_label_gpt_uuid, "Create device nodes for GPT UUIDs");
Modified: stable/8/sys/geom/label/g_label_iso9660.c
==============================================================================
--- stable/8/sys/geom/label/g_label_iso9660.c Sat Mar 27 18:01:38 2010
(r205767)
+++ stable/8/sys/geom/label/g_label_iso9660.c Sat Mar 27 18:04:33 2010
(r205768)
@@ -78,7 +78,10 @@ g_label_iso9660_taste(struct g_consumer
}
}
-const struct g_label_desc g_label_iso9660 = {
+struct g_label_desc g_label_iso9660 = {
.ld_taste = g_label_iso9660_taste,
- .ld_dir = G_LABEL_ISO9660_DIR
+ .ld_dir = G_LABEL_ISO9660_DIR,
+ .ld_enabled = 1
};
+
+G_LABEL_INIT(iso9660, g_label_iso9660, "Create device nodes for ISO9660 volume
names");
Modified: stable/8/sys/geom/label/g_label_msdosfs.c
==============================================================================
--- stable/8/sys/geom/label/g_label_msdosfs.c Sat Mar 27 18:01:38 2010
(r205767)
+++ stable/8/sys/geom/label/g_label_msdosfs.c Sat Mar 27 18:04:33 2010
(r205768)
@@ -216,7 +216,10 @@ error:
g_free(sector);
}
-const struct g_label_desc g_label_msdosfs = {
+struct g_label_desc g_label_msdosfs = {
.ld_taste = g_label_msdosfs_taste,
- .ld_dir = G_LABEL_MSDOSFS_DIR
+ .ld_dir = G_LABEL_MSDOSFS_DIR,
+ .ld_enabled = 1
};
+
+G_LABEL_INIT(msdosfs, g_label_msdosfs, "Create device nodes for MSDOSFS
volumes");
Modified: stable/8/sys/geom/label/g_label_ntfs.c
==============================================================================
--- stable/8/sys/geom/label/g_label_ntfs.c Sat Mar 27 18:01:38 2010
(r205767)
+++ stable/8/sys/geom/label/g_label_ntfs.c Sat Mar 27 18:04:33 2010
(r205768)
@@ -114,7 +114,10 @@ done:
g_free(filerecp);
}
-const struct g_label_desc g_label_ntfs = {
+struct g_label_desc g_label_ntfs = {
.ld_taste = g_label_ntfs_taste,
- .ld_dir = G_LABEL_NTFS_DIR
+ .ld_dir = G_LABEL_NTFS_DIR,
+ .ld_enabled = 1
};
+
+G_LABEL_INIT(ntfs, g_label_ntfs, "Create device nodes for NTFS volumes");
Modified: stable/8/sys/geom/label/g_label_reiserfs.c
==============================================================================
--- stable/8/sys/geom/label/g_label_reiserfs.c Sat Mar 27 18:01:38 2010
(r205767)
+++ stable/8/sys/geom/label/g_label_reiserfs.c Sat Mar 27 18:04:33 2010
(r205768)
@@ -111,7 +111,10 @@ exit_free:
g_free(fs);
}
-const struct g_label_desc g_label_reiserfs = {
+struct g_label_desc g_label_reiserfs = {
.ld_taste = g_label_reiserfs_taste,
- .ld_dir = "reiserfs"
+ .ld_dir = "reiserfs",
+ .ld_enabled = 1
};
+
+G_LABEL_INIT(reiserfs, g_label_reiserfs, "Create device nodes for REISERFS
volumes");
Modified: stable/8/sys/geom/label/g_label_ufs.c
==============================================================================
--- stable/8/sys/geom/label/g_label_ufs.c Sat Mar 27 18:01:38 2010
(r205767)
+++ stable/8/sys/geom/label/g_label_ufs.c Sat Mar 27 18:04:33 2010
(r205768)
@@ -137,13 +137,17 @@ g_label_ufs_id_taste(struct g_consumer *
g_label_ufs_taste_common(cp, label, size, G_LABEL_UFS_ID);
}
-
-const struct g_label_desc g_label_ufs_volume = {
+struct g_label_desc g_label_ufs_volume = {
.ld_taste = g_label_ufs_volume_taste,
- .ld_dir = G_LABEL_UFS_VOLUME_DIR
+ .ld_dir = G_LABEL_UFS_VOLUME_DIR,
+ .ld_enabled = 1
};
-const struct g_label_desc g_label_ufs_id = {
+struct g_label_desc g_label_ufs_id = {
.ld_taste = g_label_ufs_id_taste,
- .ld_dir = G_LABEL_UFS_ID_DIR
+ .ld_dir = G_LABEL_UFS_ID_DIR,
+ .ld_enabled = 1
};
+
+G_LABEL_INIT(ufsid, g_label_ufs_id, "Create device nodes for UFS file system
IDs");
+G_LABEL_INIT(ufs, g_label_ufs_volume, "Create device nodes for UFS volume
names");
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