1 // SPDX-License-Identifier: GPL-2.0
33 	/* sys_write only can write MAX_RW_COUNT aka 2G-4K bytes at most */  in xwrite()
38 			if (rv == -EINTR || rv == -EAGAIN)  in xwrite()
53 		count -= rv;  in xwrite()
75 	umode_t mode;  member
76 	struct hash *next;  member
89 			      umode_t mode, char *name)  in find_link()  argument
92 	for (p = head + hash(major, minor, ino); *p; p = &(*p)->next) {  in find_link()
93 		if ((*p)->ino != ino)  in find_link()
95 		if ((*p)->minor != minor)  in find_link()
97 		if ((*p)->major != major)  in find_link()
99 		if (((*p)->mode ^ mode) & S_IFMT)  in find_link()
101 		return (*p)->name;  in find_link()
106 	q->major = major;  in find_link()
107 	q->minor = minor;  in find_link()
108 	q->ino = ino;  in find_link()
109 	q->mode = mode;  in find_link()
110 	strcpy(q->name, name);  in find_link()
111 	q->next = NULL;  in find_link()
123 			*p = q->next;  in free_hash()
157 	INIT_LIST_HEAD(&de->list);  in dir_add()
158 	strscpy(de->name, name, nlen);  in dir_add()
159 	de->mtime = mtime;  in dir_add()
160 	list_add(&de->list, &dir_list);  in dir_add()
167 		list_del(&de->list);  in dir_utime()
168 		do_utime(de->name, de->mtime);  in dir_utime()
184 static __initdata umode_t mode;  variable
200 	mode = parsed[1];  in parse_header()
234 	byte_count -= n;  in eat()
241 static void __init read_into(char *buf, unsigned size, enum state next)  in read_into()  argument
246 		state = next;  in read_into()
250 		next_state = next;  in read_into()
271 	if ((remains -= n) != 0)  in do_collect()
285 			error("incorrect cpio method used: use -H newc option");  in do_header()
296 	if (S_ISLNK(mode)) {  in do_header()
305 	if (S_ISREG(mode) || !body_len)  in do_header()
316 		eat(next_header - this_header);  in do_skip()
336 	    (st.mode ^ fmode) & S_IFMT) {  in clean_path()
337 		if (S_ISDIR(st.mode))  in clean_path()
347 		char *old = find_link(major, minor, ino, mode, collected);  in maybe_link()
350 			return (init_link(old, collected) < 0) ? -1 : 1;  in maybe_link()
365 	if (collected[name_len - 1] != '\0') {  in do_name()
376 	clean_path(collected, mode);  in do_name()
377 	if (S_ISREG(mode)) {  in do_name()
383 			wfile = filp_open(collected, openflags, mode);  in do_name()
390 			vfs_fchmod(wfile, mode);  in do_name()
392 				vfs_truncate(&wfile->f_path, body_len);  in do_name()
395 	} else if (S_ISDIR(mode)) {  in do_name()
396 		init_mkdir(collected, mode);  in do_name()
398 		init_chmod(collected, mode);  in do_name()
400 	} else if (S_ISBLK(mode) || S_ISCHR(mode) ||  in do_name()
401 		   S_ISFIFO(mode) || S_ISSOCK(mode)) {  in do_name()
403 			init_mknod(collected, mode, rdev);  in do_name()
405 			init_chmod(collected, mode);  in do_name()
418 		do_utime_path(&wfile->f_path, mtime);  in do_copy()
428 		body_len -= byte_count;  in do_copy()
436 	if (collected[name_len - 1] != '\0') {  in do_symlink()
470 	return len - byte_count;  in write_buffer()
479 		return -1;  in flush_buffer()
484 			len -= written;  in flush_buffer()
488 			len -= written;  in flush_buffer()
496 static unsigned long my_inptr __initdata; /* index of next byte to be processed in inbuf */
501  * unpack_to_rootfs - decompress and extract an initramfs archive
523 	header_buf = bufs->header;  in unpack_to_rootfs()
524 	symlink_buf = bufs->symlink;  in unpack_to_rootfs()
525 	name_buf = bufs->name;  in unpack_to_rootfs()
536 			len -= written;  in unpack_to_rootfs()
541 			len--;  in unpack_to_rootfs()
563 		len -= my_inptr;  in unpack_to_rootfs()
623 	size = phys_initrd_size + (phys_initrd_start - start);  in reserve_initrd_mem()
633 		pr_err("INITRD: 0x%08llx+0x%08lx overlaps in-use memory region\n",  in reserve_initrd_mem()
646 	pr_cont(" - disabling initrd\n");  in reserve_initrd_mem()
657 	memblock_free((void *)aligned_start, aligned_end - aligned_start);  in free_initrd_mem()
680 	memset((void *)initrd_start, 0, initrd_end - initrd_start);  in kexec_free_initrd()
707 	written = xwrite(file, (char *)initrd_start, initrd_end - initrd_start,  in populate_initrd_image()
709 	if (written != initrd_end - initrd_start)  in populate_initrd_image()
711 		       written, initrd_end - initrd_start);  in populate_initrd_image()
731 	err = unpack_to_rootfs((char *)initrd_start, initrd_end - initrd_start);  in do_populate_rootfs()
750 		bin_attr_initrd.size = initrd_end - initrd_start;  in do_populate_rootfs()