From 952e934d7f682a961c92eb9bbd521a4876e201fe Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Thu, 10 Sep 2020 18:45:03 +0200 Subject: Revert "dyndbg: accept query terms like file=bar and module=foo" This reverts commit 14775b04964264189caa4a0862eac05dab8c0502 as there were still some parsing problems with it, and the follow-on patch for it. Let's revisit it later, just drop it for now. Cc: Cc: Jim Cromie Reported-by: Naresh Kamboju Cc: Stephen Rothwell Fixes: 14775b049642 ("dyndbg: accept query terms like file=bar and module=foo") Signed-off-by: Greg Kroah-Hartman --- lib/dynamic_debug.c | 53 ++++++++++++++++++++--------------------------------- 1 file changed, 20 insertions(+), 33 deletions(-) (limited to 'lib/dynamic_debug.c') diff --git a/lib/dynamic_debug.c b/lib/dynamic_debug.c index 08e4b057514c..2d4dfd44b0fa 100644 --- a/lib/dynamic_debug.c +++ b/lib/dynamic_debug.c @@ -353,8 +353,7 @@ static int check_set(const char **dest, char *src, char *name) /* * Parse words[] as a ddebug query specification, which is a series - * of (keyword, value) pairs or combined keyword=value terms, - * chosen from these possibilities: + * of (keyword, value) pairs chosen from these possibilities: * * func * file @@ -373,34 +372,22 @@ static int ddebug_parse_query(char *words[], int nwords, unsigned int i; int rc = 0; char *fline; - char *keyword, *arg; + + /* check we have an even number of words */ + if (nwords % 2 != 0) { + pr_err("expecting pairs of match-spec \n"); + return -EINVAL; + } if (modname) /* support $modname.dyndbg= */ query->module = modname; - for (i = 0; i < nwords; i++) { - /* accept keyword=arg */ - vpr_info("%d w:%s\n", i, words[i]); - - keyword = words[i]; - arg = strchr(keyword, '='); - if (arg) { - *arg++ = '\0'; - } else { - i++; /* next word is arg */ - if (!(i < nwords)) { - pr_err("missing arg to keyword: %s\n", keyword); - return -EINVAL; - } - arg = words[i]; - } - vpr_info("%d key:%s arg:%s\n", i, keyword, arg); - - if (!strcmp(keyword, "func")) { - rc = check_set(&query->function, arg, "func"); - } else if (!strcmp(keyword, "file")) { - if (check_set(&query->filename, arg, "file")) + for (i = 0; i < nwords; i += 2) { + if (!strcmp(words[i], "func")) { + rc = check_set(&query->function, words[i+1], "func"); + } else if (!strcmp(words[i], "file")) { + if (check_set(&query->filename, words[i+1], "file")) return -EINVAL; /* tail :$info is function or line-range */ @@ -416,18 +403,18 @@ static int ddebug_parse_query(char *words[], int nwords, if (parse_linerange(query, fline)) return -EINVAL; } - } else if (!strcmp(keyword, "module")) { - rc = check_set(&query->module, arg, "module"); - } else if (!strcmp(keyword, "format")) { - string_unescape_inplace(arg, UNESCAPE_SPACE | + } 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 | UNESCAPE_OCTAL | UNESCAPE_SPECIAL); - rc = check_set(&query->format, arg, "format"); - } else if (!strcmp(keyword, "line")) { - if (parse_linerange(query, arg)) + rc = check_set(&query->format, words[i+1], "format"); + } else if (!strcmp(words[i], "line")) { + if (parse_linerange(query, words[i+1])) return -EINVAL; } else { - pr_err("unknown keyword \"%s\"\n", keyword); + pr_err("unknown keyword \"%s\"\n", words[i]); return -EINVAL; } if (rc) -- cgit v1.2.3