From 4749b0ecb6241517685a2a809695a85bd9f93432 Mon Sep 17 00:00:00 2001
From: William Jon McCann <mccann@jhu.edu>
Date: Mon, 5 Mar 2007 14:39:07 -0500
Subject: add two more proc sysdep functions

---
 src/proc-linux.c | 53 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 src/proc.h       |  4 ++++
 2 files changed, 57 insertions(+)

diff --git a/src/proc-linux.c b/src/proc-linux.c
index b766183..30e7d22 100644
--- a/src/proc-linux.c
+++ b/src/proc-linux.c
@@ -258,6 +258,16 @@ link_name (guint       maj,
         return tty;
 }
 
+pid_t
+proc_stat_get_ppid (proc_stat_t *stat)
+{
+        if (stat == NULL) {
+                return -1;
+        }
+
+        return stat->ppid;
+}
+
 char *
 proc_stat_get_cmd (proc_stat_t *stat)
 {
@@ -534,3 +544,46 @@ proc_pid_get_env (pid_t       pid,
 
         return val;
 }
+
+uid_t
+proc_pid_get_uid (pid_t pid)
+{
+        struct stat st;
+        char       *path;
+        int         uid;
+        int         res;
+
+        uid = -1;
+
+        path = g_strdup_printf ("/proc/%u", (guint)pid);
+        res = stat (path, &st);
+        g_free (path);
+
+        if (res == 0) {
+                uid = st.st_uid;
+        }
+
+        return uid;
+}
+
+pid_t
+proc_pid_get_ppid (pid_t pid)
+{
+        int          ppid;
+        gboolean     res;
+        proc_stat_t *stat;
+
+        ppid = -1;
+
+        res = proc_stat_new_for_pid (pid, &stat, NULL);
+        if (! res) {
+                goto out;
+        }
+
+        ppid = proc_stat_get_ppid (stat);
+
+        proc_stat_free (stat);
+
+ out:
+        return ppid;
+}
diff --git a/src/proc.h b/src/proc.h
index 4ddf64b..8c3fc64 100644
--- a/src/proc.h
+++ b/src/proc.h
@@ -30,6 +30,7 @@ typedef struct _proc_stat_t proc_stat_t;
 gboolean     proc_stat_new_for_pid (pid_t         pid,
                                     proc_stat_t **stat,
                                     GError      **error);
+pid_t        proc_stat_get_ppid    (proc_stat_t  *stat);
 char        *proc_stat_get_tty     (proc_stat_t  *stat);
 char        *proc_stat_get_cmd     (proc_stat_t  *stat);
 void         proc_stat_free        (proc_stat_t  *stat);
@@ -39,6 +40,9 @@ char        *proc_pid_get_env      (pid_t         pid,
 
 GHashTable  *proc_pid_get_env_hash (pid_t         pid);
 
+pid_t        proc_pid_get_ppid     (pid_t         pid);
+uid_t        proc_pid_get_uid      (pid_t         pid);
+
 G_END_DECLS
 
 #endif /* __PROC_H */
-- 
cgit