1 files changed, 55 insertions, 0 deletions

diff --git a/libbb/find_pid_by_name.c b/libbb/find_pid_by_name.c
new file mode 100644
index 000000000..e98616940
--- /dev/null
+++ b/libbb/find_pid_by_name.c
@@ -0,0 +1,55 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * Utility routines.
+ *
+ * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
+ *
+ * Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
+ */
+
+#include "libbb.h"
+
+/* find_pid_by_name()
+ *
+ *  Modified by Vladimir Oleynik for use with libbb/procps.c
+ *  This finds the pid of the specified process.
+ *  Currently, it's implemented by rummaging through
+ *  the proc filesystem.
+ *
+ *  Returns a list of all matching PIDs
+ *  It is the caller's duty to free the returned pidlist.
+ */
+pid_t* find_pid_by_name(const char* procName)
+{
+        pid_t* pidList;
+        int i = 0;
+        procps_status_t* p = NULL;
+
+        pidList = xmalloc(sizeof(*pidList));
+        while ((p = procps_scan(p, PSSCAN_PID|PSSCAN_COMM))) {
+                if (strncmp(p->comm, procName, sizeof(p->comm)-1) == 0) {
+                        pidList = xrealloc(pidList, sizeof(*pidList) * (i+2));
+                        pidList[i++] = p->pid;
+                }
+        }
+
+        pidList[i] = 0;
+        return pidList;
+}
+
+pid_t *pidlist_reverse(pid_t *pidList)
+{
+        int i = 0;
+        while (pidList[i])
+                i++;
+        if (--i >= 0) {
+                pid_t k;
+                int j;
+                for (j = 0; i > j; i--, j++) {
+                        k = pidList[i];
+                        pidList[i] = pidList[j];
+                        pidList[j] = k;
+                }
+        }
+        return pidList;
+}