Initial commit.debian/0.1

1 files changed, 108 insertions, 0 deletions

diff --git a/src/read_proc.c b/src/read_proc.c
new file mode 100644
index 0000000..aea203f
--- /dev/null
+++ b/src/read_proc.c
@@ -0,0 +1,108 @@
+/*
+ *  Copyright (c) 2006 Dell, Inc.
+ *  by Matt Domsch <Matt_Domsch@dell.com>
+ *  Licensed under the GNU General Public license, version 2.
+ *   Copied from from net-tools-1.60, also under the GNU GPL v2,
+ *   and modified for use here.
+ */
+
+#define _GNU_SOURCE
+#include <stdio.h>
+#include <string.h>
+#include <ctype.h>
+#include <stdlib.h>
+#include <errno.h>
+#include "eths.h"
+
+#define _PATH_PROCNET_DEV "/proc/net/dev"
+
+static struct network_device *add_interface(struct libbiosdevname_state *state,
+					    const char *name)
+{
+	struct network_device *i;
+	i = malloc(sizeof(*i));
+	if (!i)
+		return NULL;
+	memset(i, 0, sizeof(*i));
+	INIT_LIST_HEAD(&i->node);
+	snprintf(i->kernel_name, sizeof(i->kernel_name), name);
+	list_add_tail(&i->node, &state->network_devices);
+	return i;
+}
+
+
+static char *get_name(char **namep, char *p)
+{
+    int count = 0;
+    char *name;
+    while (isspace(*p))
+	p++;
+    name = *namep = p;
+    while (*p) {
+	if (isspace(*p))
+	    break;
+	if (*p == ':') {	/* could be an alias */
+	    char *dot = p, *dotname = name;
+	    *name++ = *p++;
+	    count++;
+	    while (isdigit(*p)){
+		*name++ = *p++;
+	        count++;
+	 	if (count == (IFNAMSIZ-1))
+	    	      break;
+	    }
+	    if (*p != ':') {	/* it wasn't, backup */
+		p = dot;
+		name = dotname;
+	    }
+	    if (*p == '\0')
+		return NULL;
+	    p++;
+	    break;
+	}
+	*name++ = *p++;
+	count++;
+	if (count == (IFNAMSIZ-1))
+    	      break;
+    }
+    *name++ = '\0';
+    return p;
+}
+
+
+
+int get_interfaces(struct libbiosdevname_state *state)
+{
+	FILE *fh;
+	int err;
+	char *line = NULL;
+	size_t linelen = 0;
+
+	fh = fopen(_PATH_PROCNET_DEV, "r");
+	if (!fh) {
+		fprintf(stderr, "Error: cannot open %s (%s).\n",
+			_PATH_PROCNET_DEV, strerror(errno));
+		return 1;
+	}
+	if (getline(&line, &linelen, fh) == -1 /* eat line */
+	    || getline(&line, &linelen, fh) == -1) {
+		err = -1;
+		goto out;
+	}
+
+	err = 0;
+	while (getline(&line, &linelen, fh) != -1) {
+		char *s, *name;
+		s = get_name(&name, line);
+		add_interface(state, name);
+	}
+	if (ferror(fh)) {
+		perror(_PATH_PROCNET_DEV);
+		err = -1;
+	}
+
+out:
+	free(line);
+	fclose(fh);
+	return err;
+}