2014-03-06 20:00:23 +04:00
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#include "create_inode.h"
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2014-03-06 20:00:24 +04:00
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#if __STDC_VERSION__ < 199901L
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# if __GNUC__ >= 2
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# define __func__ __FUNCTION__
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# else
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# define __func__ "<unknown>"
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# endif
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#endif
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2014-03-06 20:00:23 +04:00
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/* Make a special file which is block, character and fifo */
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errcode_t do_mknod_internal(ext2_ino_t cwd, const char *name, struct stat *st)
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{
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2014-03-06 20:00:24 +04:00
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ext2_ino_t ino;
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errcode_t retval;
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struct ext2_inode inode;
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unsigned long major, minor, mode;
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int filetype;
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switch(st->st_mode & S_IFMT) {
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case S_IFCHR:
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mode = LINUX_S_IFCHR;
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filetype = EXT2_FT_CHRDEV;
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break;
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case S_IFBLK:
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mode = LINUX_S_IFBLK;
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filetype = EXT2_FT_BLKDEV;
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break;
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case S_IFIFO:
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mode = LINUX_S_IFIFO;
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filetype = EXT2_FT_FIFO;
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break;
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}
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if (!(current_fs->flags & EXT2_FLAG_RW)) {
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com_err(__func__, 0, "Filesystem opened read/only");
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return -1;
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}
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retval = ext2fs_new_inode(current_fs, cwd, 010755, 0, &ino);
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if (retval) {
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com_err(__func__, retval, 0);
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return retval;
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}
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#ifdef DEBUGFS
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printf("Allocated inode: %u\n", ino);
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#endif
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retval = ext2fs_link(current_fs, cwd, name, ino, filetype);
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if (retval == EXT2_ET_DIR_NO_SPACE) {
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retval = ext2fs_expand_dir(current_fs, cwd);
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if (retval) {
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com_err(__func__, retval, "while expanding directory");
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return retval;
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}
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retval = ext2fs_link(current_fs, cwd, name, ino, filetype);
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}
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if (retval) {
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com_err(name, retval, 0);
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return -1;
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}
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if (ext2fs_test_inode_bitmap2(current_fs->inode_map, ino))
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com_err(__func__, 0, "Warning: inode already set");
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ext2fs_inode_alloc_stats2(current_fs, ino, +1, 0);
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memset(&inode, 0, sizeof(inode));
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inode.i_mode = mode;
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inode.i_atime = inode.i_ctime = inode.i_mtime =
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current_fs->now ? current_fs->now : time(0);
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major = major(st->st_rdev);
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minor = minor(st->st_rdev);
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if ((major < 256) && (minor < 256)) {
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inode.i_block[0] = major * 256 + minor;
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inode.i_block[1] = 0;
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} else {
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inode.i_block[0] = 0;
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inode.i_block[1] = (minor & 0xff) | (major << 8) | ((minor & ~0xff) << 12);
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}
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inode.i_links_count = 1;
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retval = ext2fs_write_new_inode(current_fs, ino, &inode);
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if (retval)
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com_err(__func__, retval, "while creating inode %u", ino);
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return retval;
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2014-03-06 20:00:23 +04:00
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}
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/* Make a symlink name -> target */
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errcode_t do_symlink_internal(ext2_ino_t cwd, const char *name, char *target)
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{
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2014-03-06 20:00:24 +04:00
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char *cp;
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ext2_ino_t parent_ino;
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errcode_t retval;
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struct ext2_inode inode;
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struct stat st;
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cp = strrchr(name, '/');
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if (cp) {
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*cp = 0;
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if ((retval = ext2fs_namei(current_fs, root, cwd, name, &parent_ino))){
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com_err(name, retval, 0);
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return retval;
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}
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name = cp+1;
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} else
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parent_ino = cwd;
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try_again:
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retval = ext2fs_symlink(current_fs, parent_ino, 0, name, target);
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if (retval == EXT2_ET_DIR_NO_SPACE) {
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retval = ext2fs_expand_dir(current_fs, parent_ino);
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if (retval) {
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com_err("do_symlink_internal", retval, "while expanding directory");
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return retval;
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}
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goto try_again;
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}
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if (retval) {
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com_err("ext2fs_symlink", retval, 0);
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return retval;
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}
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2014-03-06 20:00:23 +04:00
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}
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/* Make a directory in the fs */
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errcode_t do_mkdir_internal(ext2_ino_t cwd, const char *name, struct stat *st)
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{
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}
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/* Copy the native file to the fs */
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errcode_t do_write_internal(ext2_ino_t cwd, const char *src, const char *dest)
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{
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}
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/* Copy files from source_dir to fs */
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errcode_t populate_fs(ext2_ino_t parent_ino, const char *source_dir)
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{
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2014-03-06 20:00:24 +04:00
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const char *name;
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DIR *dh;
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struct dirent *dent;
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struct stat st;
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char ln_target[PATH_MAX];
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ext2_ino_t ino;
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errcode_t retval;
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int read_cnt;
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root = EXT2_ROOT_INO;
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if (chdir(source_dir) < 0) {
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com_err(__func__, errno,
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_("while changing working directory to \"%s\""), source_dir);
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return errno;
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}
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if (!(dh = opendir("."))) {
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com_err(__func__, errno,
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_("while openning directory \"%s\""), source_dir);
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return errno;
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}
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while((dent = readdir(dh))) {
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if((!strcmp(dent->d_name, ".")) || (!strcmp(dent->d_name, "..")))
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continue;
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lstat(dent->d_name, &st);
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name = dent->d_name;
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switch(st.st_mode & S_IFMT) {
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case S_IFCHR:
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case S_IFBLK:
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case S_IFIFO:
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if ((retval = do_mknod_internal(parent_ino, name, &st))) {
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com_err(__func__, retval,
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_("while creating special file \"%s\""), name);
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return retval;
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}
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break;
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case S_IFSOCK:
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/* FIXME: there is no make socket function atm. */
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com_err(__func__, 0,
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_("ignoring socket file \"%s\""), name);
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continue;
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case S_IFLNK:
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if((read_cnt = readlink(name, ln_target, sizeof(ln_target))) == -1) {
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com_err(__func__, errno,
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_("while trying to readlink \"%s\""), name);
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return errno;
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}
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ln_target[read_cnt] = '\0';
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if ((retval = do_symlink_internal(parent_ino, name, ln_target))) {
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com_err(__func__, retval,
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_("while writing symlink\"%s\""), name);
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return retval;
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}
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break;
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case S_IFREG:
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if ((retval = do_write_internal(parent_ino, name, name))) {
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com_err(__func__, retval,
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_("while writing file \"%s\""), name);
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return retval;
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}
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break;
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case S_IFDIR:
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if ((retval = do_mkdir_internal(parent_ino, name, &st))) {
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com_err(__func__, retval,
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_("while making dir \"%s\""), name);
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return retval;
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}
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if ((retval = ext2fs_namei(current_fs, root, parent_ino, name, &ino))) {
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com_err(name, retval, 0);
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return retval;
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}
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/* Populate the dir recursively*/
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retval = populate_fs(ino, name);
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if (retval) {
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com_err(__func__, retval, _("while adding dir \"%s\""), name);
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return retval;
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}
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chdir("..");
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break;
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default:
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com_err(__func__, 0,
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_("ignoring entry \"%s\""), name);
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}
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}
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closedir(dh);
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return retval;
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2014-03-06 20:00:23 +04:00
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}
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