From aaebe329bff0d84e04e74915a828b12a40b55456 Mon Sep 17 00:00:00 2001 From: Jim Cromie Date: Sun, 19 Jul 2020 17:10:53 -0600 Subject: dyndbg: accept 'file foo.c:func1' and 'file foo.c:10-100' Accept these additional query forms: echo "file $filestr +_" > control path/to/file.c:100 # as from control, column 1 path/to/file.c:1-100 # or any legal line-range path/to/file.c:func_A # as from an editor/browser path/to/file.c:drm_* # wildcards still work path/to/file.c:*_foo # lead wildcard too 1st 2 examples are treated as line-ranges, 3-5 are treated as func's Doc these changes, and sprinkle in a few extra wild-card examples and trailing # explanation texts. Acked-by: Signed-off-by: Jim Cromie Link: https://lore.kernel.org/r/20200719231058.1586423-14-jim.cromie@gmail.com Signed-off-by: Greg Kroah-Hartman --- lib/dynamic_debug.c | 18 +++++++++++++++++- 1 file changed, 17 insertions(+), 1 deletion(-) (limited to 'lib') diff --git a/lib/dynamic_debug.c b/lib/dynamic_debug.c index 7a66d5e07f41..7eb963b1bd11 100644 --- a/lib/dynamic_debug.c +++ b/lib/dynamic_debug.c @@ -359,6 +359,7 @@ static int ddebug_parse_query(char *words[], int nwords, { unsigned int i; int rc = 0; + char *fline; /* check we have an even number of words */ if (nwords % 2 != 0) { @@ -374,7 +375,22 @@ static int ddebug_parse_query(char *words[], int nwords, if (!strcmp(words[i], "func")) { rc = check_set(&query->function, words[i+1], "func"); } else if (!strcmp(words[i], "file")) { - rc = check_set(&query->filename, words[i+1], "file"); + if (check_set(&query->filename, words[i+1], "file")) + return -EINVAL; + + /* tail :$info is function or line-range */ + fline = strchr(query->filename, ':'); + if (!fline) + break; + *fline++ = '\0'; + if (isalpha(*fline) || *fline == '*' || *fline == '?') { + /* take as function name */ + if (check_set(&query->function, fline, "func")) + return -EINVAL; + } else { + 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")) { -- cgit v1.2.3