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authorLee Duncan <lduncan@suse.com>2018-04-06 11:31:41 -0700
committerMartin K. Petersen <martin.petersen@oracle.com>2018-04-19 00:47:02 -0400
commit78a6295c71cb276f8ab0bfc786f3543a4e756a8f (patch)
tree6bcd3b7a9a5eb3122fec0da1ca8ff4b7e1beccf8 /drivers/target
parentbcbba7bb54e9a7c6ed35bbd5514e0507d8c495cb (diff)
downloadlinux-78a6295c71cb276f8ab0bfc786f3543a4e756a8f.tar.bz2
scsi: target: prefer dbroot of /etc/target over /var/target
The target database root directory, dbroot, has defaulted to /var/target for a while, but its main client, targetcli-fb, has been moving it to /etc/target for quite some time. With the plethora of target drivers now appearing, it has become more difficult to initialize this attribute before use by any child drivers. If the directory /etc/target exists, use that as the DB root. Otherwise, fall back to using /var/target. The ability to override this dbroot attribute still exists via sysfs. Signed-off-by: Lee Duncan <lduncan@suse.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/target')
-rw-r--r--drivers/target/target_core_configfs.c25
-rw-r--r--drivers/target/target_core_internal.h1
2 files changed, 26 insertions, 0 deletions
diff --git a/drivers/target/target_core_configfs.c b/drivers/target/target_core_configfs.c
index 3f4bf126eed0..5ccef7d597fa 100644
--- a/drivers/target/target_core_configfs.c
+++ b/drivers/target/target_core_configfs.c
@@ -155,6 +155,8 @@ static ssize_t target_core_item_dbroot_store(struct config_item *item,
mutex_unlock(&g_tf_lock);
+ pr_debug("Target_Core_ConfigFS: db_root set to %s\n", db_root);
+
return read_bytes;
}
@@ -3213,6 +3215,27 @@ void target_setup_backend_cits(struct target_backend *tb)
target_core_setup_dev_stat_cit(tb);
}
+static void target_init_dbroot(void)
+{
+ struct file *fp;
+
+ snprintf(db_root_stage, DB_ROOT_LEN, DB_ROOT_PREFERRED);
+ fp = filp_open(db_root_stage, O_RDONLY, 0);
+ if (IS_ERR(fp)) {
+ pr_err("db_root: cannot open: %s\n", db_root_stage);
+ return;
+ }
+ if (!S_ISDIR(file_inode(fp)->i_mode)) {
+ filp_close(fp, NULL);
+ pr_err("db_root: not a valid directory: %s\n", db_root_stage);
+ return;
+ }
+ filp_close(fp, NULL);
+
+ strncpy(db_root, db_root_stage, DB_ROOT_LEN);
+ pr_debug("Target_Core_ConfigFS: db_root set to %s\n", db_root);
+}
+
static int __init target_core_init_configfs(void)
{
struct configfs_subsystem *subsys = &target_core_fabrics;
@@ -3293,6 +3316,8 @@ static int __init target_core_init_configfs(void)
if (ret < 0)
goto out;
+ target_init_dbroot();
+
return 0;
out:
diff --git a/drivers/target/target_core_internal.h b/drivers/target/target_core_internal.h
index 1d5afc3ae017..dead30b1d32c 100644
--- a/drivers/target/target_core_internal.h
+++ b/drivers/target/target_core_internal.h
@@ -166,6 +166,7 @@ extern struct se_portal_group xcopy_pt_tpg;
/* target_core_configfs.c */
#define DB_ROOT_LEN 4096
#define DB_ROOT_DEFAULT "/var/target"
+#define DB_ROOT_PREFERRED "/etc/target"
extern char db_root[];