Volume creation changes. No longer dependent on dd system command. Does not overwrite existing files. Rudimentary file size checks.

This commit is contained in:
Ger Schinkel 2022-05-02 16:40:55 +02:00
parent 425dac6a7c
commit 81ccbfa1e7

View File

@ -23,6 +23,7 @@
#include <gtk/gtk.h>
#include <stdlib.h>
#include <dirent.h>
#include <unistd.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <net/if.h>
@ -572,15 +573,22 @@ static void add_volume_ok(GtkWidget *button, file_req_assoc *assoc)
static void create_volume_ok(GtkWidget *button, file_req_assoc *assoc)
{
gchar *file = (gchar *)gtk_file_selection_get_filename(GTK_FILE_SELECTION(assoc->req));
const gchar *str = gtk_entry_get_text(GTK_ENTRY(assoc->entry));
int size = atoi(str);
char cmd[1024];
sprintf(cmd, "dd if=/dev/zero \"of=%s\" bs=1024k count=%d", file, size);
int ret = system(cmd);
if (ret == 0)
int disk_size = atoi(str);
if (disk_size < 1 || disk_size > 2000) {
printf("Disk size needs to be between 1 and 2000 MB.\n");
gtk_widget_destroy(GTK_WIDGET(assoc->req));
delete assoc;
return;
}
int fd = open(file, O_CREAT | O_WRONLY | O_EXCL, S_IRUSR | S_IWUSR);
if (fd < 0 && errno == EEXIST) {
printf("File already exists, refusing to overwrite file.\n");
} else {
ftruncate(fd, disk_size * 1024 * 1024);
gtk_clist_append(GTK_CLIST(volume_list), &file);
}
close(fd);
gtk_widget_destroy(GTK_WIDGET(assoc->req));
delete assoc;
}