From 30af079f994622a591e9d432dbe524257f26cf37 Mon Sep 17 00:00:00 2001
From: Martin Baulig <martin@src.gnome.org>
Date: Sat, 3 Apr 1999 22:55:42 +0000
Subject: [PATCH] Added implementation for procmap.c (glibtop_proc_maps).

---
 sysdeps/kernel/glibtop_private.h |  5 ++
 sysdeps/kernel/procdata.c        | 17 +++++++
 sysdeps/kernel/procmap.c         | 84 ++++++++++++++++++++++++++++++--
 3 files changed, 101 insertions(+), 5 deletions(-)

diff --git a/sysdeps/kernel/glibtop_private.h b/sysdeps/kernel/glibtop_private.h
index 69770d41..02f6c264 100644
--- a/sysdeps/kernel/glibtop_private.h
+++ b/sysdeps/kernel/glibtop_private.h
@@ -29,6 +29,7 @@
 
 #include <sys/param.h>
 #include <sys/sysctl.h>
+#include <sys/user.h>
 
 #undef LIBGTOP_VERSION
 #include <linux/libgtop.h>
@@ -73,6 +74,10 @@ int
 glibtop_get_proc_data_proc_args_s (glibtop *server, pid_t pid,
 				   char *result, size_t max_len);
 
+int
+glibtop_get_proc_data_proc_maps_s (glibtop *server, pid_t pid,
+				   libgtop_proc_maps_t *result,
+				   size_t max_len);
 
 END_LIBGTOP_DECLS
 
diff --git a/sysdeps/kernel/procdata.c b/sysdeps/kernel/procdata.c
index abc6e3d7..9431e1e3 100644
--- a/sysdeps/kernel/procdata.c
+++ b/sysdeps/kernel/procdata.c
@@ -161,3 +161,20 @@ glibtop_get_proc_data_proc_args_s (glibtop *server, pid_t pid,
 
     return size;
 }
+
+int
+glibtop_get_proc_data_proc_maps_s (glibtop *server, pid_t pid,
+				   libgtop_proc_maps_t *result,
+				   size_t max_len)
+{
+    int name [3] = { CTL_LIBGTOP, LIBGTOP_PROC_MAPS, pid };
+    size_t size = max_len;
+
+    if (sysctl (name, 3, result, &size, NULL, 0)) {
+	glibtop_warn_io_r (server, "sysctl (libgtop/proc_maps)");
+	fprintf (stderr, "retval: %d\n", size);
+	return -1;
+    }
+
+    return size;
+}
diff --git a/sysdeps/kernel/procmap.c b/sysdeps/kernel/procmap.c
index 5a6c479a..54a2cd37 100644
--- a/sysdeps/kernel/procmap.c
+++ b/sysdeps/kernel/procmap.c
@@ -27,14 +27,24 @@
 #include <glibtop/xmalloc.h>
 #include <glibtop/procmap.h>
 
-static const unsigned long _glibtop_sysdeps_proc_map = 0;
+#include <glibtop_private.h>
+
+static const unsigned long _glibtop_sysdeps_proc_map =
+(1 << GLIBTOP_PROC_MAP_NUMBER) + (1 << GLIBTOP_PROC_MAP_TOTAL) +
+(1 << GLIBTOP_PROC_MAP_SIZE);
+
+static const unsigned long _glibtop_sysdeps_map_entry =
+(1 << GLIBTOP_MAP_ENTRY_START) + (1 << GLIBTOP_MAP_ENTRY_END) +
+(1 << GLIBTOP_MAP_ENTRY_OFFSET) + (1 << GLIBTOP_MAP_ENTRY_PERM) +
+(1 << GLIBTOP_MAP_ENTRY_INODE) + (1 << GLIBTOP_MAP_ENTRY_DEVICE) +
+(1 << GLIBTOP_MAP_ENTRY_FILENAME);
 
 /* Init function. */
 
 void
 glibtop_init_proc_map_s (glibtop *server)
 {
-	server->sysdeps.proc_map = _glibtop_sysdeps_proc_map;
+    server->sysdeps.proc_map = _glibtop_sysdeps_proc_map;
 }
 
 /* Provides detailed information about a process. */
@@ -42,9 +52,73 @@ glibtop_init_proc_map_s (glibtop *server)
 glibtop_map_entry *
 glibtop_get_proc_map_s (glibtop *server, glibtop_proc_map *buf,	pid_t pid)
 {
-	glibtop_init_s (&server, GLIBTOP_SYSDEPS_PROC_MAP, 0);
-	
-	memset (buf, 0, sizeof (glibtop_proc_map));
+    glibtop_map_entry *retval = NULL;
+    libgtop_proc_maps_t *maps;
+    size_t count, max_len, i;
+    int ret;
+
+    glibtop_init_s (&server, GLIBTOP_SYSDEPS_PROC_MAP, 0);
 	
+    memset (buf, 0, sizeof (glibtop_proc_map));
+
+    /* Get number of map entries. */
+    count = glibtop_get_proc_data_proc_maps_s (server, pid, NULL, 0);
+
+    /* Allocate memory. */
+    maps = glibtop_calloc_r (server, count, sizeof (libgtop_proc_maps_t));
+    max_len = count * sizeof (libgtop_proc_maps_t);
+
+    ret = glibtop_get_proc_data_proc_maps_s (server, pid, maps, max_len);
+    if (ret < 0) {
+	glibtop_free_r (server, maps);
 	return NULL;
+    }
+
+    /* Calculate number of map entries. */
+    count = ret / sizeof (libgtop_proc_maps_t);
+
+    /* Allocate memory for the result. */
+    retval = glibtop_calloc_r (server, count, sizeof (glibtop_map_entry));
+
+    for (i = 0; i < count; i++) {
+	char *filename;
+
+	retval [i].start = maps [i].header.start;
+	retval [i].end = maps [i].header.end;
+	retval [i].offset = maps [i].header.offset;
+
+	if (maps [i].header.perm & LIBGTOP_VM_READ)
+	    retval [i].perm |= GLIBTOP_MAP_PERM_READ;
+	if (maps [i].header.perm & LIBGTOP_VM_WRITE)
+	    retval [i].perm |= GLIBTOP_MAP_PERM_WRITE;
+	if (maps [i].header.perm & LIBGTOP_VM_EXEC)
+	    retval [i].perm |= GLIBTOP_MAP_PERM_EXECUTE;
+	if (maps [i].header.perm & LIBGTOP_VM_SHARED)
+	    retval [i].perm |= GLIBTOP_MAP_PERM_SHARED;
+	if (!(maps [i].header.perm & LIBGTOP_VM_MAYSHARE))
+	    retval [i].perm |= GLIBTOP_MAP_PERM_PRIVATE;
+
+	retval [i].device = maps [i].header.device;
+	retval [i].inode = maps [i].header.inode;
+
+	filename = maps [i].filename;
+	filename += maps [i].header.filename_offset;
+
+	strncpy (retval [i].filename, filename, GLIBTOP_MAP_FILENAME_LEN);
+	retval [i].filename [GLIBTOP_MAP_FILENAME_LEN-1] = '\0';
+
+	retval [i].flags = _glibtop_sysdeps_map_entry;
+    }
+
+    /* Free map entries. */
+    glibtop_free_r (server, maps);
+
+    /* Write retval. */
+    buf->number = count;
+    buf->size = sizeof (glibtop_map_entry);
+    buf->total = buf->number * sizeof (glibtop_map_entry);
+
+    buf->flags = _glibtop_sysdeps_proc_map;
+
+    return retval;
 }