Don't take newline into account, otherwise:
# echo 'pid_max:-w-' > ksym_trace_filter
# echo -n 'pid_max:rw-' > ksym_trace_filter
bash: echo: write error: Invalid argument
Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Acked-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: "K.Prasad" <prasad@linux.vnet.ibm.com>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Steven Rostedt <rostedt@goodmis.org>
LKML-Reference: <
4A52E2EB.9070503@cn.fujitsu.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
static int parse_ksym_trace_str(char *input_string, char **ksymname,
unsigned long *addr)
{
- char *delimiter = ":";
int ret;
- ret = -EINVAL;
- *ksymname = strsep(&input_string, delimiter);
+ strstrip(input_string);
+
+ *ksymname = strsep(&input_string, ":");
*addr = kallsyms_lookup_name(*ksymname);
/* Check for malformed request: (2), (1) and (5) */
if ((!input_string) ||
- (strlen(input_string) != (KSYM_TRACER_OP_LEN + 1)) ||
- (*addr == 0))
- goto return_code;
+ (strlen(input_string) != KSYM_TRACER_OP_LEN) ||
+ (*addr == 0))
+ return -EINVAL;;
+
ret = ksym_trace_get_access_type(input_string);
-return_code:
return ret;
}