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Subject[PATCH] kernel: debug: kdb: strncpy issue, using strlcpy instead of strncpy.

cmd_cur and cmd_hist[] are all NUL terminated string.
need using strlcpy instead of strncpy.

Signed-off-by: Chen Gang <gang.chen@asianux.com>
---
kernel/debug/kdb/kdb_main.c | 8 ++++----
1 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/kernel/debug/kdb/kdb_main.c b/kernel/debug/kdb/kdb_main.c
index 00eb8f7..a2b04d7 100644
--- a/kernel/debug/kdb/kdb_main.c
+++ b/kernel/debug/kdb/kdb_main.c
@@ -1063,12 +1063,12 @@ static int handle_ctrl_cmd(char *cmd)
case CTRL_P:
if (cmdptr != cmd_tail)
cmdptr = (cmdptr-1) % KDB_CMD_HISTORY_COUNT;
- strncpy(cmd_cur, cmd_hist[cmdptr], CMD_BUFLEN);
+ strlcpy(cmd_cur, cmd_hist[cmdptr], CMD_BUFLEN);
return 1;
case CTRL_N:
if (cmdptr != cmd_head)
cmdptr = (cmdptr+1) % KDB_CMD_HISTORY_COUNT;
- strncpy(cmd_cur, cmd_hist[cmdptr], CMD_BUFLEN);
+ strlcpy(cmd_cur, cmd_hist[cmdptr], CMD_BUFLEN);
return 1;
}
return 0;
@@ -1260,7 +1260,7 @@ do_full_getstr:
if (*cmdbuf != '\n') {
if (*cmdbuf < 32) {
if (cmdptr == cmd_head) {
- strncpy(cmd_hist[cmd_head], cmd_cur,
+ strlcpy(cmd_hist[cmd_head], cmd_cur,
CMD_BUFLEN);
*(cmd_hist[cmd_head] +
strlen(cmd_hist[cmd_head])-1) = '\0';
@@ -1270,7 +1270,7 @@ do_full_getstr:
cmdbuf = cmd_cur;
goto do_full_getstr;
} else {
- strncpy(cmd_hist[cmd_head], cmd_cur,
+ strlcpy(cmd_hist[cmd_head], cmd_cur,
CMD_BUFLEN);
}

--
1.7.7.6

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