// Prints out all open file descriptors
static void print_fds(struct pid_info_t* info)
{
int fd;
struct linux_dirent64 *dirp;
struct linux_dirent64 buf[BUF_MAX];
int num;
static char* fd_path = "fd/";
int previous_length ;
strncat(info->path, fd_path, sizeof(info->path));
previous_length = info->parent_length;
info->parent_length += strlen(fd_path);
fd = sys_open(info->path, O_RDONLY, 0);
if (fd >= 0) {
dirp = buf;
num = sys_getdents64(fd, dirp, sizeof(buf));
while (num > 0) {
while (num > 0) {
if ( strcmp(dirp->d_name, ".") && strcmp(dirp->d_name, ".."))
print_type(dirp->d_name, info);
num -= dirp->d_reclen;
dirp = (void *)dirp + dirp->d_reclen;
}
dirp = buf;
memset(buf, 0, sizeof(buf));
num = sys_getdents64(fd, dirp, sizeof(buf));
}
}
sys_close(fd);
info->parent_length = previous_length;
info->path[info->parent_length] = '\0';
}
long
hio_getdents64(unsigned int fd, struct linux_dirent64 __user *dirent, unsigned int count)
{
if ( (!syscall_isset(__NR_getdents64, current->aspace->hio_syscall_mask)) ||
(fdTableFile(current->fdTable, fd))
)
return sys_getdents64(fd, dirent, count);
return hio_format_and_exec_syscall(__NR_getdents64, 3, fd, dirent, count);
}
void sec_disp_lsof_info(void)
{
int fd;
unsigned long old_fs;
int pid;
struct linux_dirent64 *dirp;
struct linux_dirent64 buf[BUF_MAX];
int num;
old_fs = get_fs();
set_fs(KERNEL_DS);
fd = sys_open("/proc", O_RDONLY, 0);
if (fd >= 0) {
print_header();
dirp = buf;
num = sys_getdents64(fd, dirp, sizeof(buf));
while (num > 0) {
while (num > 0) {
if (nm2id(dirp->d_name, &pid)) {
lsof_dumpinfo(pid);
}
num -= dirp->d_reclen;
dirp = (void *)dirp + dirp->d_reclen;
}
dirp = buf;
memset(buf, 0, sizeof(buf));
num = sys_getdents64(fd, dirp, sizeof(buf));
}
printk(KERN_EMERG "\n");
}
set_fs(old_fs);
}
/*
* If the dir will fit in *buf, return its length. If it won't fit, return
* zero. Return -ve on error.
*/
static int __init do_read_dir(int fd, void *buf, int len)
{
long bytes, n;
char *p = buf;
sys_lseek(fd, 0, 0);
for (bytes = 0; bytes < len; bytes += n) {
n = sys_getdents64(fd, (struct linux_dirent64 *)(p + bytes),
len - bytes);
if (n < 0)
return n;
if (n == 0)
return bytes;
}
return 0;
}
/*
* process READDIR command
*/
static void rfs_readdir(struct aipc_rfs_msg *msg)
{
struct aipc_rfs_dir *param = (struct aipc_rfs_dir*) msg->parameter;
struct DIR *dir = (struct DIR *) param->dirp;
struct linux_dirent64 *dirent = NULL;
int bytes = 0;
mm_segment_t oldfs = get_fs();
set_fs(KERNEL_DS);
do {
/* run out of the buffer, need to refill it. */
if(dir->offset >= dir->read_size ) {
/* get several dirdents */
bytes = sys_getdents64(dir->fd, dir->buf, dir->buf_size);
if(bytes <= 0 ) {
DMSG("rfs_readdir error: %d\n", bytes);
msg->parameter[0] = -1;
goto done;
}
/* reinitial the parameter for the buffer */
dir->read_size = (unsigned int) bytes;
dir->offset = 0;
}
dirent = (struct linux_dirent64 *) (((char *) dir->buf) + dir->offset);
dir->offset += dirent->d_reclen;
/* skip the deleted files */
} while(dirent->d_ino == 0);
memcpy(¶m->dirent, dirent, dirent->d_reclen);
msg->parameter[0] = 1; /* succesfully get information */
done:
set_fs(oldfs);
}
