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Subject[PATCH 23/64] staging: lustre: uapi: move lustre_cfg_string() to obd_config.c
Date
To perserve the truncate warning move lustre_cfg_string()
to obd_config.c. A identical function was created for
userland. This function was a bit big for a inline function.

Signed-off-by: James Simmons <uja.ornl@yahoo.com>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-6401
Reviewed-on: https://review.whamcloud.com/26966
Reviewed-by: Quentin Bouget <quentin.bouget@cea.fr>
Reviewed-by: Ben Evans <bevans@cray.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>
Signed-off-by: James Simmons <jsimmons@infradead.org>
---
drivers/staging/lustre/lustre/include/lustre_cfg.h | 29 ------------------
drivers/staging/lustre/lustre/include/obd_class.h | 1 +
.../staging/lustre/lustre/obdclass/obd_config.c | 34 ++++++++++++++++++++++
drivers/staging/lustre/lustre/ptlrpc/sec_config.c | 1 +
4 files changed, 36 insertions(+), 29 deletions(-)

diff --git a/drivers/staging/lustre/lustre/include/lustre_cfg.h b/drivers/staging/lustre/lustre/include/lustre_cfg.h
index 9d6934b..21a48b1 100644
--- a/drivers/staging/lustre/lustre/include/lustre_cfg.h
+++ b/drivers/staging/lustre/lustre/include/lustre_cfg.h
@@ -179,35 +179,6 @@ static inline void lustre_cfg_bufs_init(struct lustre_cfg_bufs *bufs,
}
}

-static inline char *lustre_cfg_string(struct lustre_cfg *lcfg, __u32 index)
-{
- char *s;
-
- if (lcfg->lcfg_buflens[index] == 0)
- return NULL;
-
- s = lustre_cfg_buf(lcfg, index);
- if (!s)
- return NULL;
-
- /*
- * make sure it's NULL terminated, even if this kills a char
- * of data. Try to use the padding first though.
- */
- if (s[lcfg->lcfg_buflens[index] - 1] != '\0') {
- size_t last = min((size_t)lcfg->lcfg_buflens[index],
- cfs_size_round(lcfg->lcfg_buflens[index]) - 1);
- char lost = s[last];
-
- s[last] = '\0';
- if (lost != '\0') {
- CWARN("Truncated buf %d to '%s' (lost '%c'...)\n",
- index, s, lost);
- }
- }
- return s;
-}
-
static inline __u32 lustre_cfg_len(__u32 bufcount, __u32 *buflens)
{
__u32 i;
diff --git a/drivers/staging/lustre/lustre/include/obd_class.h b/drivers/staging/lustre/lustre/include/obd_class.h
index 8cc13ea..7d98485 100644
--- a/drivers/staging/lustre/lustre/include/obd_class.h
+++ b/drivers/staging/lustre/lustre/include/obd_class.h
@@ -107,6 +107,7 @@ typedef int (*llog_cb_t)(const struct lu_env *, struct llog_handle *,
struct llog_rec_hdr *, void *);

/* obd_config.c */
+char *lustre_cfg_string(struct lustre_cfg *lcfg, u32 index);
int class_process_config(struct lustre_cfg *lcfg);
int class_process_proc_param(char *prefix, struct lprocfs_vars *lvars,
struct lustre_cfg *lcfg, void *data);
diff --git a/drivers/staging/lustre/lustre/obdclass/obd_config.c b/drivers/staging/lustre/lustre/obdclass/obd_config.c
index 4c7c4f3..dc7b27e 100644
--- a/drivers/staging/lustre/lustre/obdclass/obd_config.c
+++ b/drivers/staging/lustre/lustre/obdclass/obd_config.c
@@ -170,6 +170,40 @@ int class_parse_nid_quiet(char *buf, lnet_nid_t *nid, char **endh)
}
EXPORT_SYMBOL(class_parse_nid_quiet);

+char *lustre_cfg_string(struct lustre_cfg *lcfg, u32 index)
+{
+ char *s;
+
+ if (!lcfg->lcfg_buflens[index])
+ return NULL;
+
+ s = lustre_cfg_buf(lcfg, index);
+ if (!s)
+ return NULL;
+
+ /*
+ * make sure it's NULL terminated, even if this kills a char
+ * of data. Try to use the padding first though.
+ */
+ if (s[lcfg->lcfg_buflens[index] - 1] != '\0') {
+ size_t last = ALIGN(lcfg->lcfg_buflens[index], 8) - 1;
+ char lost;
+
+ /* Use the smaller value */
+ if (last > lcfg->lcfg_buflens[index])
+ last = lcfg->lcfg_buflens[index];
+
+ lost = s[last];
+ s[last] = '\0';
+ if (lost != '\0') {
+ CWARN("Truncated buf %d to '%s' (lost '%c'...)\n",
+ index, s, lost);
+ }
+ }
+ return s;
+}
+EXPORT_SYMBOL(lustre_cfg_string);
+
/********************** class fns **********************/

/**
diff --git a/drivers/staging/lustre/lustre/ptlrpc/sec_config.c b/drivers/staging/lustre/lustre/ptlrpc/sec_config.c
index bb953d4..9143441 100644
--- a/drivers/staging/lustre/lustre/ptlrpc/sec_config.c
+++ b/drivers/staging/lustre/lustre/ptlrpc/sec_config.c
@@ -37,6 +37,7 @@
#include <linux/key.h>

#include "../include/obd.h"
+#include "../include/obd_class.h"
#include "../include/obd_support.h"
#include "../include/lustre_import.h"
#include "../../include/uapi/linux/lustre/lustre_param.h"
--
1.8.3.1
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