From: Amin Khorsandi <amin.khorsa...@infinera.com>
---
strace.1 | 5 +++++
syscall.c | 26 +++++++++++++++++++++++++-
2 files changed, 30 insertions(+), 1 deletion(-)
diff --git a/strace.1 b/strace.1
index b7dddc0..c2088fa 100644
--- a/strace.1
+++ b/strace.1
@@ -403,6 +403,11 @@ Furthermore, using the abbreviation will ensure that you
don't
accidentally forget to include a call like
.B lstat
in the list. Betchya woulda forgot that one.
+To see a list of all system calls in a class you can use
+.BR "-e\ trace?" = classname .
+For example you can see what are the system calls in the network
+class running strace using the option
+.BR "-e\ trace?" = network .
.TP
.BR "\-e\ trace" = process
Trace all system calls which involve process management. This
diff --git a/syscall.c b/syscall.c
index c61f827..fb20f65 100644
--- a/syscall.c
+++ b/syscall.c
@@ -503,6 +503,25 @@ lookup_class(const char *s)
return -1;
}
+static void
+print_trace_class(const char* trace_class)
+{
+ unsigned int i;
+ unsigned pers = 0; /* only print system calls in personality 0 */
+ int class = lookup_class(trace_class);
+
+ if (class != -1) {
+ printf("List of system calls in %s class\n", trace_class);
+ printf("%s\n", "-------------------------------------");
+ for (i = 0; i < nsyscall_vec[pers]; i++)
+ if (sysent_vec[pers][i].sys_flags & class) {
+ printf("\t%s \n", sysent_vec[pers][i].sys_name);
+ }
+ } else {
+ error_msg_and_die("invalid class name '%s'", trace_class);
+ }
+}
+
void
qualify(const char *s)
{
@@ -518,7 +537,12 @@ qualify(const char *s)
opt = &qual_options[0];
for (i = 0; (p = qual_options[i].option_name); i++) {
unsigned int len = strlen(p);
- if (strncmp(s, p, len) == 0 && s[len] == '=') {
+ if (strncmp(s, p, len) == 0 && s[len] == '?' && s[len + 1] ==
'=') {
+ s += len + 2;
+ print_trace_class(s);
+ exit(0);
+ }
+ else if (strncmp(s, p, len) == 0 && s[len] == '=') {
opt = &qual_options[i];
s += len + 1;
break;
--
2.4.10
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