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Subject[PATCH v2 19/24] dyndbg: accept query terms like module:foo and file=bar
Date
Current code expects "keyword" "arg" as 2 space separated words.
Change to also accept "keyword:arg" and "keyword=arg" forms as well,
and drop !(nwords%2) requirement.

Then in rest of function, use new keyword,arg variables instead of
word[i],word[i+1]
---
lib/dynamic_debug.c | 49 +++++++++++++++++++++++++++------------------
1 file changed, 30 insertions(+), 19 deletions(-)

diff --git a/lib/dynamic_debug.c b/lib/dynamic_debug.c
index d67fbbc5317f..cb5c7480e026 100644
--- a/lib/dynamic_debug.c
+++ b/lib/dynamic_debug.c
@@ -375,22 +375,33 @@ static int ddebug_parse_query(char *words[], int nwords,
unsigned int i;
int rc = 0;
char *fline;
-
- /* check we have an even number of words */
- if (nwords % 2 != 0) {
- pr_err("expecting pairs of match-spec <value>\n");
- return -EINVAL;
- }
+ char *keyword, *arg;

if (modname)
/* support $modname.dyndbg=<multiple queries> */
query->module = modname;

- for (i = 0; i < nwords; i += 2) {
- if (!strcmp(words[i], "func")) {
- rc = check_set(&query->function, words[i+1], "func");
- } else if (!strcmp(words[i], "file")) {
- if (check_set(&query->filename, words[i+1], "file"))
+ for (i = 0; i < nwords; i++) {
+ /* accept keyword[:=]arg */
+ vpr_info("%d w:%s\n", i, words[i]);
+
+ keyword = words[i];
+ if ((arg = strpbrk(keyword, ":="))) {
+ *arg++ = '\0';
+ } else {
+ i++; /* next word is arg */
+ if (!(i < nwords)) {
+ pr_err("missing arg to keyword:%s\n", keyword);
+ return -EINVAL;
+ }
+ arg = words[i];
+ }
+ vpr_info("%d key:%s arg:%s\n", i, keyword, arg);
+
+ if (!strcmp(keyword, "func")) {
+ rc = check_set(&query->function, arg, "func");
+ } else if (!strcmp(keyword, "file")) {
+ if (check_set(&query->filename, arg, "file"))
return -EINVAL;

/* tail :$info is function or line-range */
@@ -406,18 +417,18 @@ static int ddebug_parse_query(char *words[], int nwords,
if (parse_linerange(query, fline))
return -EINVAL;
}
- } else if (!strcmp(words[i], "module")) {
- rc = check_set(&query->module, words[i+1], "module");
- } else if (!strcmp(words[i], "format")) {
- string_unescape_inplace(words[i+1], UNESCAPE_SPACE |
+ } else if (!strcmp(keyword, "module")) {
+ rc = check_set(&query->module, arg, "module");
+ } else if (!strcmp(keyword, "format")) {
+ string_unescape_inplace(arg, UNESCAPE_SPACE |
UNESCAPE_OCTAL |
UNESCAPE_SPECIAL);
- rc = check_set(&query->format, words[i+1], "format");
- } else if (!strcmp(words[i], "line")) {
- if (parse_linerange(query, words[i+1]))
+ rc = check_set(&query->format, arg, "format");
+ } else if (!strcmp(keyword, "line")) {
+ if (parse_linerange(query, arg))
return -EINVAL;
} else {
- pr_err("unknown keyword \"%s\"\n", words[i]);
+ pr_err("unknown keyword \"%s\"\n", keyword);
return -EINVAL;
}
if (rc)
--
2.26.2
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