blob: 0cbbd3ba0f9ce163f657c194918507ce789ccf5e [file] [log] [blame]
/*
* create_inode.c --- create an inode
*
* Copyright (C) 2014 Robert Yang <liezhi.yang@windriver.com>
*
* %Begin-Header%
* This file may be redistributed under the terms of the GNU library
* General Public License, version 2.
* %End-Header%
*/
#define _FILE_OFFSET_BITS 64
#define _LARGEFILE64_SOURCE 1
#define _GNU_SOURCE 1
#include "config.h"
#include <time.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>
#include <limits.h> /* for PATH_MAX */
#include <dirent.h> /* for scandir() and alphasort() */
#if defined HAVE_SYS_XATTR_H
#include <sys/xattr.h>
#elif defined HAVE_ATTR_XATTR_H
#include <attr/xattr.h>
#endif
#ifdef HAVE_SYS_IOCTL_H
#include <sys/ioctl.h>
#endif
#ifdef HAVE_SYS_SYSMACROS_H
#include <sys/sysmacros.h>
#endif
#include <ext2fs/ext2fs.h>
#include <ext2fs/ext2_types.h>
#include <ext2fs/fiemap.h>
#include "create_inode.h"
#include "support/nls-enable.h"
/* 64KiB is the minimum blksize to best minimize system call overhead. */
#define COPY_FILE_BUFLEN 65536
static int ext2_file_type(unsigned int mode)
{
if (LINUX_S_ISREG(mode))
return EXT2_FT_REG_FILE;
if (LINUX_S_ISDIR(mode))
return EXT2_FT_DIR;
if (LINUX_S_ISCHR(mode))
return EXT2_FT_CHRDEV;
if (LINUX_S_ISBLK(mode))
return EXT2_FT_BLKDEV;
if (LINUX_S_ISLNK(mode))
return EXT2_FT_SYMLINK;
if (LINUX_S_ISFIFO(mode))
return EXT2_FT_FIFO;
if (LINUX_S_ISSOCK(mode))
return EXT2_FT_SOCK;
return 0;
}
/* Link an inode number to a directory */
static errcode_t add_link(ext2_filsys fs, ext2_ino_t parent_ino,
ext2_ino_t ino, const char *name)
{
struct ext2_inode inode;
errcode_t retval;
retval = ext2fs_read_inode(fs, ino, &inode);
if (retval) {
com_err(__func__, retval, _("while reading inode %u"), ino);
return retval;
}
retval = ext2fs_link(fs, parent_ino, name, ino,
ext2_file_type(inode.i_mode));
if (retval == EXT2_ET_DIR_NO_SPACE) {
retval = ext2fs_expand_dir(fs, parent_ino);
if (retval) {
com_err(__func__, retval,
_("while expanding directory"));
return retval;
}
retval = ext2fs_link(fs, parent_ino, name, ino,
ext2_file_type(inode.i_mode));
}
if (retval) {
com_err(__func__, retval, _("while linking \"%s\""), name);
return retval;
}
inode.i_links_count++;
retval = ext2fs_write_inode(fs, ino, &inode);
if (retval)
com_err(__func__, retval, _("while writing inode %u"), ino);
return retval;
}
/* Set the uid, gid, mode and time for the inode */
static errcode_t set_inode_extra(ext2_filsys fs, ext2_ino_t ino,
struct stat *st)
{
errcode_t retval;
struct ext2_inode inode;
retval = ext2fs_read_inode(fs, ino, &inode);
if (retval) {
com_err(__func__, retval, _("while reading inode %u"), ino);
return retval;
}
inode.i_uid = st->st_uid;
inode.i_gid = st->st_gid;
inode.i_mode |= st->st_mode;
inode.i_atime = st->st_atime;
inode.i_mtime = st->st_mtime;
inode.i_ctime = st->st_ctime;
retval = ext2fs_write_inode(fs, ino, &inode);
if (retval)
com_err(__func__, retval, _("while writing inode %u"), ino);
return retval;
}
#ifdef HAVE_LLISTXATTR
static errcode_t set_inode_xattr(ext2_filsys fs, ext2_ino_t ino,
const char *filename)
{
errcode_t retval, close_retval;
struct ext2_xattr_handle *handle;
ssize_t size, value_size;
char *list = NULL;
int i;
if (no_copy_xattrs)
return 0;
size = llistxattr(filename, NULL, 0);
if (size == -1) {
retval = errno;
com_err(__func__, retval, _("while listing attributes of \"%s\""),
filename);
return retval;
} else if (size == 0) {
return 0;
}
retval = ext2fs_xattrs_open(fs, ino, &handle);
if (retval) {
if (retval == EXT2_ET_MISSING_EA_FEATURE)
return 0;
com_err(__func__, retval, _("while opening inode %u"), ino);
return retval;
}
retval = ext2fs_get_mem(size, &list);
if (retval) {
com_err(__func__, retval, _("while allocating memory"));
goto out;
}
size = llistxattr(filename, list, size);
if (size == -1) {
retval = errno;
com_err(__func__, retval, _("while listing attributes of \"%s\""),
filename);
goto out;
}
for (i = 0; i < size; i += strlen(&list[i]) + 1) {
const char *name = &list[i];
char *value;
value_size = lgetxattr(filename, name, NULL, 0);
if (value_size == -1) {
retval = errno;
com_err(__func__, retval,
_("while reading attribute \"%s\" of \"%s\""),
name, filename);
break;
}
retval = ext2fs_get_mem(value_size, &value);
if (retval) {
com_err(__func__, retval, _("while allocating memory"));
break;
}
value_size = lgetxattr(filename, name, value, value_size);
if (value_size == -1) {
ext2fs_free_mem(&value);
retval = errno;
com_err(__func__, retval,
_("while reading attribute \"%s\" of \"%s\""),
name, filename);
break;
}
retval = ext2fs_xattr_set(handle, name, value, value_size);
ext2fs_free_mem(&value);
if (retval) {
com_err(__func__, retval,
_("while writing attribute \"%s\" to inode %u"),
name, ino);
break;
}
}
out:
ext2fs_free_mem(&list);
close_retval = ext2fs_xattrs_close(&handle);
if (close_retval) {
com_err(__func__, retval, _("while closing inode %u"), ino);
retval = retval ? retval : close_retval;
}
return retval;
return 0;
}
#else /* HAVE_LLISTXATTR */
static errcode_t set_inode_xattr(ext2_filsys fs EXT2FS_ATTR((unused)),
ext2_ino_t ino EXT2FS_ATTR((unused)),
const char *filename EXT2FS_ATTR((unused)))
{
return 0;
}
#endif /* HAVE_LLISTXATTR */
#ifndef _WIN32
/* Make a special files (block and character devices), fifo's, and sockets */
errcode_t do_mknod_internal(ext2_filsys fs, ext2_ino_t cwd, const char *name,
unsigned int st_mode, unsigned int st_rdev)
{
ext2_ino_t ino;
errcode_t retval;
struct ext2_inode inode;
unsigned long devmajor, devminor, mode;
int filetype;
switch(st_mode & S_IFMT) {
case S_IFCHR:
mode = LINUX_S_IFCHR;
filetype = EXT2_FT_CHRDEV;
break;
case S_IFBLK:
mode = LINUX_S_IFBLK;
filetype = EXT2_FT_BLKDEV;
break;
case S_IFIFO:
mode = LINUX_S_IFIFO;
filetype = EXT2_FT_FIFO;
break;
#ifndef _WIN32
case S_IFSOCK:
mode = LINUX_S_IFSOCK;
filetype = EXT2_FT_SOCK;
break;
#endif
default:
return EXT2_ET_INVALID_ARGUMENT;
}
retval = ext2fs_new_inode(fs, cwd, 010755, 0, &ino);
if (retval) {
com_err(__func__, retval, _("while allocating inode \"%s\""),
name);
return retval;
}
#ifdef DEBUGFS
printf("Allocated inode: %u\n", ino);
#endif
retval = ext2fs_link(fs, cwd, name, ino, filetype);
if (retval == EXT2_ET_DIR_NO_SPACE) {
retval = ext2fs_expand_dir(fs, cwd);
if (retval) {
com_err(__func__, retval,
_("while expanding directory"));
return retval;
}
retval = ext2fs_link(fs, cwd, name, ino, filetype);
}
if (retval) {
com_err(name, retval, _("while creating inode \"%s\""), name);
return retval;
}
if (ext2fs_test_inode_bitmap2(fs->inode_map, ino))
com_err(__func__, 0, "Warning: inode already set");
ext2fs_inode_alloc_stats2(fs, ino, +1, 0);
memset(&inode, 0, sizeof(inode));
inode.i_mode = mode;
inode.i_atime = inode.i_ctime = inode.i_mtime =
fs->now ? fs->now : time(0);
if (filetype != S_IFIFO) {
devmajor = major(st_rdev);
devminor = minor(st_rdev);
if ((devmajor < 256) && (devminor < 256)) {
inode.i_block[0] = devmajor * 256 + devminor;
inode.i_block[1] = 0;
} else {
inode.i_block[0] = 0;
inode.i_block[1] = (devminor & 0xff) | (devmajor << 8) |
((devminor & ~0xff) << 12);
}
}
inode.i_links_count = 1;
retval = ext2fs_write_new_inode(fs, ino, &inode);
if (retval)
com_err(__func__, retval, _("while writing inode %u"), ino);
return retval;
}
#endif
/* Make a symlink name -> target */
errcode_t do_symlink_internal(ext2_filsys fs, ext2_ino_t cwd, const char *name,
char *target, ext2_ino_t root)
{
char *cp;
ext2_ino_t parent_ino;
errcode_t retval;
cp = strrchr(name, '/');
if (cp) {
*cp = 0;
retval = ext2fs_namei(fs, root, cwd, name, &parent_ino);
if (retval) {
com_err(name, retval, 0);
return retval;
}
name = cp+1;
} else
parent_ino = cwd;
retval = ext2fs_symlink(fs, parent_ino, 0, name, target);
if (retval == EXT2_ET_DIR_NO_SPACE) {
retval = ext2fs_expand_dir(fs, parent_ino);
if (retval) {
com_err("do_symlink_internal", retval,
_("while expanding directory"));
return retval;
}
retval = ext2fs_symlink(fs, parent_ino, 0, name, target);
}
if (retval)
com_err("ext2fs_symlink", retval,
_("while creating symlink \"%s\""), name);
return retval;
}
/* Make a directory in the fs */
errcode_t do_mkdir_internal(ext2_filsys fs, ext2_ino_t cwd, const char *name,
ext2_ino_t root)
{
char *cp;
ext2_ino_t parent_ino;
errcode_t retval;
cp = strrchr(name, '/');
if (cp) {
*cp = 0;
retval = ext2fs_namei(fs, root, cwd, name, &parent_ino);
if (retval) {
com_err(name, retval, _("while looking up \"%s\""),
name);
return retval;
}
name = cp+1;
} else
parent_ino = cwd;
retval = ext2fs_mkdir(fs, parent_ino, 0, name);
if (retval == EXT2_ET_DIR_NO_SPACE) {
retval = ext2fs_expand_dir(fs, parent_ino);
if (retval) {
com_err(__func__, retval,
_("while expanding directory"));
return retval;
}
retval = ext2fs_mkdir(fs, parent_ino, 0, name);
}
if (retval)
com_err("ext2fs_mkdir", retval,
_("while creating directory \"%s\""), name);
return retval;
}
#if !defined HAVE_PREAD64 && !defined HAVE_PREAD
static ssize_t my_pread(int fd, void *buf, size_t count, off_t offset)
{
if (lseek(fd, offset, SEEK_SET) < 0)
return 0;
return read(fd, buf, count);
}
#endif /* !defined HAVE_PREAD64 && !defined HAVE_PREAD */
static errcode_t copy_file_chunk(ext2_filsys fs, int fd, ext2_file_t e2_file,
off_t start, off_t end, char *buf,
char *zerobuf)
{
off_t off, bpos;
ssize_t got, blen;
unsigned int written;
char *ptr;
errcode_t err = 0;
for (off = start; off < end; off += COPY_FILE_BUFLEN) {
#ifdef HAVE_PREAD64
got = pread64(fd, buf, COPY_FILE_BUFLEN, off);
#elif HAVE_PREAD
got = pread(fd, buf, COPY_FILE_BUFLEN, off);
#else
got = my_pread(fd, buf, COPY_FILE_BUFLEN, off);
#endif
if (got < 0) {
err = errno;
goto fail;
}
for (bpos = 0, ptr = buf; bpos < got; bpos += fs->blocksize) {
blen = fs->blocksize;
if (blen > got - bpos)
blen = got - bpos;
if (memcmp(ptr, zerobuf, blen) == 0) {
ptr += blen;
continue;
}
err = ext2fs_file_lseek(e2_file, off + bpos,
EXT2_SEEK_SET, NULL);
if (err)
goto fail;
while (blen > 0) {
err = ext2fs_file_write(e2_file, ptr, blen,
&written);
if (err)
goto fail;
if (written == 0) {
err = EIO;
goto fail;
}
blen -= written;
ptr += written;
}
}
}
fail:
return err;
}
#if defined(SEEK_DATA) && defined(SEEK_HOLE)
static errcode_t try_lseek_copy(ext2_filsys fs, int fd, struct stat *statbuf,
ext2_file_t e2_file, char *buf, char *zerobuf)
{
off_t data = 0, hole;
off_t data_blk, hole_blk;
errcode_t err = 0;
/* Try to use SEEK_DATA and SEEK_HOLE */
while (data < statbuf->st_size) {
data = lseek(fd, data, SEEK_DATA);
if (data < 0) {
if (errno == ENXIO)
break;
return EXT2_ET_UNIMPLEMENTED;
}
hole = lseek(fd, data, SEEK_HOLE);
if (hole < 0)
return EXT2_ET_UNIMPLEMENTED;
data_blk = data & ~(fs->blocksize - 1);
hole_blk = (hole + (fs->blocksize - 1)) & ~(fs->blocksize - 1);
err = copy_file_chunk(fs, fd, e2_file, data_blk, hole_blk, buf,
zerobuf);
if (err)
return err;
data = hole;
}
return err;
}
#endif /* SEEK_DATA and SEEK_HOLE */
#if defined(FS_IOC_FIEMAP)
static errcode_t try_fiemap_copy(ext2_filsys fs, int fd, ext2_file_t e2_file,
char *buf, char *zerobuf)
{
#define EXTENT_MAX_COUNT 512
struct fiemap *fiemap_buf;
struct fiemap_extent *ext_buf, *ext;
int ext_buf_size, fie_buf_size;
off_t pos = 0;
unsigned int i;
errcode_t err;
ext_buf_size = EXTENT_MAX_COUNT * sizeof(struct fiemap_extent);
fie_buf_size = sizeof(struct fiemap) + ext_buf_size;
err = ext2fs_get_memzero(fie_buf_size, &fiemap_buf);
if (err)
return err;
ext_buf = fiemap_buf->fm_extents;
memset(fiemap_buf, 0, fie_buf_size);
fiemap_buf->fm_length = FIEMAP_MAX_OFFSET;
fiemap_buf->fm_flags |= FIEMAP_FLAG_SYNC;
fiemap_buf->fm_extent_count = EXTENT_MAX_COUNT;
do {
fiemap_buf->fm_start = pos;
memset(ext_buf, 0, ext_buf_size);
err = ioctl(fd, FS_IOC_FIEMAP, fiemap_buf);
if (err < 0 && (errno == EOPNOTSUPP || errno == ENOTTY)) {
err = EXT2_ET_UNIMPLEMENTED;
goto out;
} else if (err < 0) {
err = errno;
goto out;
} else if (fiemap_buf->fm_mapped_extents == 0)
goto out;
for (i = 0, ext = ext_buf; i < fiemap_buf->fm_mapped_extents;
i++, ext++) {
err = copy_file_chunk(fs, fd, e2_file, ext->fe_logical,
ext->fe_logical + ext->fe_length,
buf, zerobuf);
if (err)
goto out;
}
ext--;
/* Record file's logical offset this time */
pos = ext->fe_logical + ext->fe_length;
/*
* If fm_extents array has been filled and
* there are extents left, continue to cycle.
*/
} while (fiemap_buf->fm_mapped_extents == EXTENT_MAX_COUNT &&
!(ext->fe_flags & FIEMAP_EXTENT_LAST));
out:
ext2fs_free_mem(&fiemap_buf);
return err;
}
#endif /* FS_IOC_FIEMAP */
static errcode_t copy_file(ext2_filsys fs, int fd, struct stat *statbuf,
ext2_ino_t ino)
{
ext2_file_t e2_file;
char *buf = NULL, *zerobuf = NULL;
errcode_t err, close_err;
err = ext2fs_file_open(fs, ino, EXT2_FILE_WRITE, &e2_file);
if (err)
return err;
err = ext2fs_get_mem(COPY_FILE_BUFLEN, &buf);
if (err)
goto out;
err = ext2fs_get_memzero(fs->blocksize, &zerobuf);
if (err)
goto out;
#if defined(SEEK_DATA) && defined(SEEK_HOLE)
err = try_lseek_copy(fs, fd, statbuf, e2_file, buf, zerobuf);
if (err != EXT2_ET_UNIMPLEMENTED)
goto out;
#endif
#if defined(FS_IOC_FIEMAP)
err = try_fiemap_copy(fs, fd, e2_file, buf, zerobuf);
if (err != EXT2_ET_UNIMPLEMENTED)
goto out;
#endif
err = copy_file_chunk(fs, fd, e2_file, 0, statbuf->st_size, buf,
zerobuf);
out:
ext2fs_free_mem(&zerobuf);
ext2fs_free_mem(&buf);
close_err = ext2fs_file_close(e2_file);
if (err == 0)
err = close_err;
return err;
}
static int is_hardlink(struct hdlinks_s *hdlinks, dev_t dev, ino_t ino)
{
int i;
for (i = 0; i < hdlinks->count; i++) {
if (hdlinks->hdl[i].src_dev == dev &&
hdlinks->hdl[i].src_ino == ino)
return i;
}
return -1;
}
/* Copy the native file to the fs */
errcode_t do_write_internal(ext2_filsys fs, ext2_ino_t cwd, const char *src,
const char *dest, ext2_ino_t root)
{
int fd;
struct stat statbuf;
ext2_ino_t newfile;
errcode_t retval;
struct ext2_inode inode;
fd = ext2fs_open_file(src, O_RDONLY, 0);
if (fd < 0) {
retval = errno;
com_err(__func__, retval, _("while opening \"%s\" to copy"),
src);
return retval;
}
if (fstat(fd, &statbuf) < 0) {
retval = errno;
goto out;
}
retval = ext2fs_namei(fs, root, cwd, dest, &newfile);
if (retval == 0) {
retval = EXT2_ET_FILE_EXISTS;
goto out;
}
retval = ext2fs_new_inode(fs, cwd, 010755, 0, &newfile);
if (retval)
goto out;
#ifdef DEBUGFS
printf("Allocated inode: %u\n", newfile);
#endif
retval = ext2fs_link(fs, cwd, dest, newfile,
EXT2_FT_REG_FILE);
if (retval == EXT2_ET_DIR_NO_SPACE) {
retval = ext2fs_expand_dir(fs, cwd);
if (retval)
goto out;
retval = ext2fs_link(fs, cwd, dest, newfile,
EXT2_FT_REG_FILE);
}
if (retval)
goto out;
if (ext2fs_test_inode_bitmap2(fs->inode_map, newfile))
com_err(__func__, 0, "Warning: inode already set");
ext2fs_inode_alloc_stats2(fs, newfile, +1, 0);
memset(&inode, 0, sizeof(inode));
inode.i_mode = (statbuf.st_mode & ~LINUX_S_IFMT) | LINUX_S_IFREG;
inode.i_atime = inode.i_ctime = inode.i_mtime =
fs->now ? fs->now : time(0);
inode.i_links_count = 1;
retval = ext2fs_inode_size_set(fs, &inode, statbuf.st_size);
if (retval)
goto out;
if (ext2fs_has_feature_inline_data(fs->super)) {
inode.i_flags |= EXT4_INLINE_DATA_FL;
} else if (ext2fs_has_feature_extents(fs->super)) {
ext2_extent_handle_t handle;
inode.i_flags &= ~EXT4_EXTENTS_FL;
retval = ext2fs_extent_open2(fs, newfile, &inode, &handle);
if (retval)
goto out;
ext2fs_extent_free(handle);
}
retval = ext2fs_write_new_inode(fs, newfile, &inode);
if (retval)
goto out;
if (inode.i_flags & EXT4_INLINE_DATA_FL) {
retval = ext2fs_inline_data_init(fs, newfile);
if (retval)
goto out;
}
if (LINUX_S_ISREG(inode.i_mode)) {
retval = copy_file(fs, fd, &statbuf, newfile);
if (retval)
goto out;
}
out:
close(fd);
return retval;
}
struct file_info {
char *path;
size_t path_len;
size_t path_max_len;
};
static errcode_t path_append(struct file_info *target, const char *file)
{
if (strlen(file) + target->path_len + 1 > target->path_max_len) {
target->path_max_len *= 2;
target->path = realloc(target->path, target->path_max_len);
if (!target->path)
return EXT2_ET_NO_MEMORY;
}
target->path_len += sprintf(target->path + target->path_len, "/%s",
file);
return 0;
}
#ifdef _WIN32
static int scandir(const char *dir_name, struct dirent ***name_list,
int (*filter)(const struct dirent*),
int (*compar)(const struct dirent**, const struct dirent**)) {
DIR *dir;
struct dirent *dent;
struct dirent **temp_list = NULL;
size_t temp_list_size = 0; // unit: num of dirent
size_t num_dent = 0;
dir = opendir(dir_name);
if (dir == NULL) {
return -1;
}
while ((dent = readdir(dir))) {
if (filter != NULL && !(*filter)(dent))
continue;
// re-allocate the list
if (num_dent == temp_list_size) {
size_t new_list_size = temp_list_size + 32;
struct dirent **new_list = (struct dirent**)realloc(
temp_list, new_list_size * sizeof(struct dirent*));
if (new_list == NULL) {
goto out;
}
temp_list_size = new_list_size;
temp_list = new_list;
}
// add the copy of dirent to the list
temp_list[num_dent] = (struct dirent*)malloc((dent->d_reclen + 3) & ~3);
memcpy(temp_list[num_dent], dent, dent->d_reclen);
num_dent++;
}
if (compar != NULL) {
qsort(temp_list, num_dent, sizeof(struct dirent*),
(int (*)(const void*, const void*))compar);
}
// release the temp list
*name_list = temp_list;
temp_list = NULL;
out:
if (temp_list != NULL) {
while (num_dent > 0) {
free(temp_list[--num_dent]);
}
free(temp_list);
num_dent = -1;
}
closedir(dir);
return num_dent;
}
static int alphasort(const struct dirent **a, const struct dirent **b) {
return strcoll((*a)->d_name, (*b)->d_name);
}
#endif
/* Copy files from source_dir to fs in alphabetical order */
static errcode_t __populate_fs(ext2_filsys fs, ext2_ino_t parent_ino,
const char *source_dir, ext2_ino_t root,
struct hdlinks_s *hdlinks,
struct file_info *target,
struct fs_ops_callbacks *fs_callbacks)
{
const char *name;
struct dirent **dent;
struct stat st;
char *ln_target = NULL;
unsigned int save_inode;
ext2_ino_t ino;
errcode_t retval = 0;
int read_cnt;
int hdlink;
size_t cur_dir_path_len;
int i, num_dents;
if (chdir(source_dir) < 0) {
retval = errno;
com_err(__func__, retval,
_("while changing working directory to \"%s\""),
source_dir);
return retval;
}
num_dents = scandir(".", &dent, NULL, alphasort);
if (num_dents < 0) {
retval = errno;
com_err(__func__, retval,
_("while scanning directory \"%s\""), source_dir);
return retval;
}
for (i = 0; i < num_dents; free(dent[i]), i++) {
name = dent[i]->d_name;
if ((!strcmp(name, ".")) || (!strcmp(name, "..")))
continue;
if (lstat(name, &st)) {
retval = errno;
com_err(__func__, retval, _("while lstat \"%s\""),
name);
goto out;
}
/* Check for hardlinks */
save_inode = 0;
if (!S_ISDIR(st.st_mode) && !S_ISLNK(st.st_mode) &&
st.st_nlink > 1) {
hdlink = is_hardlink(hdlinks, st.st_dev, st.st_ino);
if (hdlink >= 0) {
retval = add_link(fs, parent_ino,
hdlinks->hdl[hdlink].dst_ino,
name);
if (retval) {
com_err(__func__, retval,
"while linking %s", name);
goto out;
}
continue;
} else
save_inode = 1;
}
cur_dir_path_len = target->path_len;
retval = path_append(target, name);
if (retval) {
com_err(__func__, retval,
"while appending %s", name);
goto out;
}
if (fs_callbacks && fs_callbacks->create_new_inode) {
retval = fs_callbacks->create_new_inode(fs,
target->path, name, parent_ino, root,
st.st_mode & S_IFMT);
if (retval)
goto out;
}
switch(st.st_mode & S_IFMT) {
case S_IFCHR:
case S_IFBLK:
case S_IFIFO:
#ifndef _WIN32
case S_IFSOCK:
retval = do_mknod_internal(fs, parent_ino, name,
st.st_mode, st.st_rdev);
if (retval) {
com_err(__func__, retval,
_("while creating special file "
"\"%s\""), name);
goto out;
}
break;
case S_IFLNK:
ln_target = malloc(st.st_size + 1);
if (ln_target == NULL) {
com_err(__func__, retval,
_("malloc failed"));
goto out;
}
read_cnt = readlink(name, ln_target,
st.st_size + 1);
if (read_cnt == -1) {
retval = errno;
com_err(__func__, retval,
_("while trying to read link \"%s\""),
name);
free(ln_target);
goto out;
}
if (read_cnt > st.st_size) {
com_err(__func__, retval,
_("symlink increased in size "
"between lstat() and readlink()"));
free(ln_target);
goto out;
}
ln_target[read_cnt] = '\0';
retval = do_symlink_internal(fs, parent_ino, name,
ln_target, root);
free(ln_target);
if (retval) {
com_err(__func__, retval,
_("while writing symlink\"%s\""),
name);
goto out;
}
break;
#endif
case S_IFREG:
retval = do_write_internal(fs, parent_ino, name, name,
root);
if (retval) {
com_err(__func__, retval,
_("while writing file \"%s\""), name);
goto out;
}
break;
case S_IFDIR:
/* Don't choke on /lost+found */
if (parent_ino == EXT2_ROOT_INO &&
strcmp(name, "lost+found") == 0)
goto find_lnf;
retval = do_mkdir_internal(fs, parent_ino, name,
root);
if (retval) {
com_err(__func__, retval,
_("while making dir \"%s\""), name);
goto out;
}
find_lnf:
retval = ext2fs_namei(fs, root, parent_ino,
name, &ino);
if (retval) {
com_err(name, retval, 0);
goto out;
}
/* Populate the dir recursively*/
retval = __populate_fs(fs, ino, name, root, hdlinks,
target, fs_callbacks);
if (retval)
goto out;
if (chdir("..")) {
retval = errno;
com_err(__func__, retval,
_("while changing directory"));
goto out;
}
break;
default:
com_err(__func__, 0,
_("ignoring entry \"%s\""), name);
}
retval = ext2fs_namei(fs, root, parent_ino, name, &ino);
if (retval) {
com_err(name, retval, _("while looking up \"%s\""),
name);
goto out;
}
retval = set_inode_extra(fs, ino, &st);
if (retval) {
com_err(__func__, retval,
_("while setting inode for \"%s\""), name);
goto out;
}
retval = set_inode_xattr(fs, ino, name);
if (retval) {
com_err(__func__, retval,
_("while setting xattrs for \"%s\""), name);
goto out;
}
if (fs_callbacks && fs_callbacks->end_create_new_inode) {
retval = fs_callbacks->end_create_new_inode(fs,
target->path, name, parent_ino, root,
st.st_mode & S_IFMT);
if (retval)
goto out;
}
/* Save the hardlink ino */
if (save_inode) {
/*
* Check whether need more memory, and we don't need
* free() since the lifespan will be over after the fs
* populated.
*/
if (hdlinks->count == hdlinks->size) {
void *p = realloc(hdlinks->hdl,
(hdlinks->size + HDLINK_CNT) *
sizeof(struct hdlink_s));
if (p == NULL) {
retval = EXT2_ET_NO_MEMORY;
com_err(name, retval,
_("while saving inode data"));
goto out;
}
hdlinks->hdl = p;
hdlinks->size += HDLINK_CNT;
}
hdlinks->hdl[hdlinks->count].src_dev = st.st_dev;
hdlinks->hdl[hdlinks->count].src_ino = st.st_ino;
hdlinks->hdl[hdlinks->count].dst_ino = ino;
hdlinks->count++;
}
target->path_len = cur_dir_path_len;
target->path[target->path_len] = 0;
}
out:
for (; i < num_dents; free(dent[i]), i++);
free(dent);
return retval;
}
errcode_t populate_fs2(ext2_filsys fs, ext2_ino_t parent_ino,
const char *source_dir, ext2_ino_t root,
struct fs_ops_callbacks *fs_callbacks)
{
struct file_info file_info;
struct hdlinks_s hdlinks;
errcode_t retval;
if (!(fs->flags & EXT2_FLAG_RW)) {
com_err(__func__, 0, "Filesystem opened readonly");
return EROFS;
}
hdlinks.count = 0;
hdlinks.size = HDLINK_CNT;
hdlinks.hdl = realloc(NULL, hdlinks.size * sizeof(struct hdlink_s));
if (hdlinks.hdl == NULL) {
retval = errno;
com_err(__func__, retval, _("while allocating memory"));
return retval;
}
file_info.path_len = 0;
file_info.path_max_len = 255;
file_info.path = calloc(file_info.path_max_len, 1);
retval = __populate_fs(fs, parent_ino, source_dir, root, &hdlinks,
&file_info, fs_callbacks);
free(file_info.path);
free(hdlinks.hdl);
return retval;
}
errcode_t populate_fs(ext2_filsys fs, ext2_ino_t parent_ino,
const char *source_dir, ext2_ino_t root)
{
return populate_fs2(fs, parent_ino, source_dir, root, NULL);
}