[PATCH] Add OpenBSD support to DetermineClientCmd()
Matthieu Herrb
matthieu.herrb at laas.fr
Mon Jan 2 05:23:59 PST 2012
Uses kvm_getargv() from libkvm.
Signed-off-by: Matthieu Herrb <matthieu.herrb at laas.fr>
---
configure.ac | 7 +++++++
os/client.c | 43 ++++++++++++++++++++++++++++++++++++++++++-
2 files changed, 49 insertions(+), 1 deletions(-)
diff --git a/configure.ac b/configure.ac
index 57bbcf4..46c3d61 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1057,6 +1057,13 @@ if test "x$RES" = xyes && test "x$CLIENTIDS" = xyes; then
else
CLIENTIDS=no
fi
+if test "x$CLIENTIDS" = xyes; then
+ case $host_os in
+ openbsd*)
+ SYS_LIBS="$SYS_LIBS -lkvm"
+ ;;
+ esac
+fi
AC_MSG_RESULT([$CLIENTIDS])
AM_CONDITIONAL(CLIENTIDS, [test "x$CLIENTIDS" = xyes])
diff --git a/os/client.c b/os/client.c
index 8f4707b..fbccf22 100644
--- a/os/client.c
+++ b/os/client.c
@@ -64,6 +64,15 @@
#include <procfs.h>
#endif
+#ifdef __OpenBSD__
+#include <sys/param.h>
+#include <sys/sysctl.h>
+#include <sys/types.h>
+
+#include <kvm.h>
+#include <limits.h>
+#endif
+
/**
* Try to determine a PID for a client from its connection
* information. This should be called only once when new client has
@@ -172,7 +181,39 @@ void DetermineClientCmd(pid_t pid, const char **cmdname, const char **cmdargs)
if (cmdargs && sp)
*cmdargs = strdup(sp);
}
-#else /* not Solaris */
+#elif defined(__OpenBSD__)
+ /* on OpenBSD use kvm_getargv() */
+ {
+ kvm_t *kd;
+ char errbuf[_POSIX2_LINE_MAX];
+ char **argv;
+ struct kinfo_proc *kp;
+ size_t len = 0;
+ int i, n;
+
+ kd = kvm_open(NULL, NULL, NULL, KVM_NO_FILES, errbuf);
+ if (kd == NULL)
+ return;
+ kp = kvm_getprocs(kd, KERN_PROC_PID, pid, sizeof(struct kinfo_proc), &n);
+ if (n != 1)
+ return;
+ argv = kvm_getargv(kd, kp, 0);
+ *cmdname = strdup(argv[0]);
+ i = 1;
+ while (argv[i] != NULL) {
+ len += strlen(argv[i]) + 1;
+ i++;
+ }
+ *cmdargs = calloc(1, len);
+ i = 1;
+ while (argv[i] != NULL) {
+ strlcat(*cmdargs, argv[i], len);
+ strlcat(*cmdargs, " ", len);
+ i++;
+ }
+ kvm_close(kd);
+ }
+#else /* Linux using /proc/pid/cmdline */
/* Check if /proc/pid/cmdline exists. It's not supported on all
* operating systems. */
--
1.7.6
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