From: Mikko Rasa <tdb@tdb.fi>
Date: Sat, 19 Apr 2014 15:09:42 +0000 (+0300)
Subject: Generalize mtab handling code
X-Git-Url: http://git.tdb.fi/?a=commitdiff_plain;h=077926116bdc4f245a9f6b0542eba8dabe1ca01c;p=pmount-gui.git

Generalize mtab handling code
---

diff --git a/main.c b/main.c
index b1dcb1c..cd95cc9 100644
--- a/main.c
+++ b/main.c
@@ -180,47 +180,56 @@ void free_properties(Property *props)
 	free(props);
 }
 
-char **get_mounted_devices(void)
+char **get_mount_entries(char *filename, int (*predicate)(struct mntent *))
 {
-	FILE *mtab;
+	FILE *file;
 	struct mntent *me;
-	char **mounted = NULL;
-	int n_mounted = 0;
+	char **devices = NULL;
+	int n_devices = 0;
 
-	mtab = setmntent("/etc/mtab", "r");
-	if(!mtab)
+	file = setmntent(filename, "r");
+	if(!file)
 		return NULL;
 
-	while((me = getmntent(mtab)))
-	{
-		mounted = (char **)realloc(mounted, (n_mounted+2)*sizeof(char *));
-		mounted[n_mounted] = strdup(me->mnt_fsname);
-		++n_mounted;
-	}
+	while((me = getmntent(file)))
+		if(!predicate || predicate(me))
+		{
+			devices = (char **)realloc(devices, (n_devices+2)*sizeof(char *));
+			devices[n_devices] = strdup(me->mnt_fsname);
+			++n_devices;
+		}
 
-	endmntent(mtab);
-	mounted[n_mounted] = NULL;
+	endmntent(file);
+	if(devices)
+		devices[n_devices] = NULL;
 
-	return mounted;
+	return devices;
 }
 
-int is_mounted(char **mounted, char *devname)
+char **get_mounted_devices(void)
+{
+	return get_mount_entries("/etc/mtab", NULL);
+}
+
+int is_in_array(char **names, char *devname)
 {
 	int i;
-	for(i=0; mounted[i]; ++i)
-		if(!strcmp(devname, mounted[i]))
+	if(!names || !devname)
+		return 0;
+	for(i=0; names[i]; ++i)
+		if(!strcmp(devname, names[i]))
 			return 1;
 	return 0;
 }
 
-void free_mounted_devices(char **mounted)
+void free_device_names(char **names)
 {
 	int i;
-	if(!mounted)
+	if(!names)
 		return;
-	for(i=0; mounted[i]; ++i)
-		free(mounted[i]);
-	free(mounted);
+	for(i=0; names[i]; ++i)
+		free(names[i]);
+	free(names);
 }
 
 int is_removable(char *devpath)
@@ -457,7 +466,7 @@ Device *get_devices(void)
 			devices[n_devices].node = nodes[i];
 			devices[n_devices].label = strdup(label);
 			devices[n_devices].description = strdup(buf);
-			devices[n_devices].mounted = is_mounted(mounted, devname);
+			devices[n_devices].mounted = is_in_array(mounted, devname);
 			devices[n_devices].time = st.st_mtime;
 			++n_devices;
 		}
@@ -467,7 +476,7 @@ Device *get_devices(void)
 	}
 
 	free(nodes);
-	free_mounted_devices(mounted);
+	free_device_names(mounted);
 
 	if(devices)
 	{