From: Timo Kokkonen <kaapeli@itanic.dy.fi>
Date: Sat, 3 Jul 2010 20:10:53 +0000 (+0300)
Subject: parser: Add support for parsing through all PIDs
X-Git-Url: http://git.itanic.dy.fi/?p=scan-pagemap;a=commitdiff_plain;h=a5c2e985a1b17f90164d57728bc5fe8cac0ec556

parser: Add support for parsing through all PIDs

This reads the entire /proc directory and parses all pids it can find
there.

Signed-off-by: Timo Kokkonen <kaapeli@itanic.dy.fi>
---

diff --git a/parse.c b/parse.c
index 55d6402..32660e2 100644
--- a/parse.c
+++ b/parse.c
@@ -1,3 +1,5 @@
+#include <sys/types.h>
+#include <dirent.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ -218,3 +220,50 @@ err_out:
 
 	return;
 }
+
+static int get_next_pid(void)
+{
+	static DIR *dir = NULL;
+	struct dirent *dirent;
+	int error;
+
+	if (!dir) {
+		dir = opendir("/proc");
+		if (!dir) {
+			error = errno;
+			printf("Failed to open /proc directory: %s\n",
+				strerror(error));
+			return -1;
+		}
+	}
+
+restart:
+	dirent = readdir(dir);
+	if (!dirent) {
+		if (errno == 0) {
+			closedir(dir);
+			dir = NULL;
+			return 0;
+		}
+		error = errno;
+		printf("Failed to read directory: %s\n", strerror(error));
+		return -1;
+	}
+
+	printf("%s\n", dirent->d_name);
+	if (dirent->d_name[0] < '0' || dirent->d_name[0] > '9')
+		goto restart;
+
+	return atoi(dirent->d_name);
+}
+
+void scan_all_pids(struct pageframe *pf)
+{
+	int pid;
+	while(1) {
+		pid = get_next_pid();
+		if (pid <= 0)
+			break;
+		read_pageframe(pid, pf);
+	}
+}
diff --git a/parse.h b/parse.h
index dcbe1f2..b3092d2 100644
--- a/parse.h
+++ b/parse.h
@@ -4,5 +4,6 @@
 #include "pagemap.h"
 
 void read_pageframe(int pid, struct pageframe *pageframe);
+void scan_all_pids(struct pageframe *pf);
 
 #endif