#include <linux/delay.h>
#include <linux/string.h>
#include <linux/syscalls.h>
+#include <linux/utime.h>
static __initdata char *message;
static void __init error(char *x)
message = x;
}
-static void __init *malloc(size_t size)
-{
- return kmalloc(size, GFP_KERNEL);
-}
-
-static void __init free(void *where)
-{
- kfree(where);
-}
-
/* link hash */
+#define N_ALIGN(len) ((((len) + 1) & ~3) + 2)
+
static __initdata struct hash {
int ino, minor, major;
+ mode_t mode;
struct hash *next;
- char *name;
+ char name[N_ALIGN(PATH_MAX)];
} *head[32];
static inline int hash(int major, int minor, int ino)
return tmp & 31;
}
-static char __init *find_link(int major, int minor, int ino, char *name)
+static char __init *find_link(int major, int minor, int ino,
+ mode_t mode, char *name)
{
struct hash **p, *q;
for (p = head + hash(major, minor, ino); *p; p = &(*p)->next) {
continue;
if ((*p)->major != major)
continue;
+ if (((*p)->mode ^ mode) & S_IFMT)
+ continue;
return (*p)->name;
}
- q = (struct hash *)malloc(sizeof(struct hash));
+ q = kmalloc(sizeof(struct hash), GFP_KERNEL);
if (!q)
panic("can't allocate link hash entry");
- q->ino = ino;
- q->minor = minor;
q->major = major;
- q->name = name;
+ q->minor = minor;
+ q->ino = ino;
+ q->mode = mode;
+ strcpy(q->name, name);
q->next = NULL;
*p = q;
return NULL;
while (*p) {
q = *p;
*p = q->next;
- free(q);
+ kfree(q);
}
}
}
+static long __init do_utime(char __user *filename, time_t mtime)
+{
+ struct timespec t[2];
+
+ t[0].tv_sec = mtime;
+ t[0].tv_nsec = 0;
+ t[1].tv_sec = mtime;
+ t[1].tv_nsec = 0;
+
+ return do_utimes(AT_FDCWD, filename, t, AT_SYMLINK_NOFOLLOW);
+}
+
+static __initdata LIST_HEAD(dir_list);
+struct dir_entry {
+ struct list_head list;
+ char *name;
+ time_t mtime;
+};
+
+static void __init dir_add(const char *name, time_t mtime)
+{
+ struct dir_entry *de = kmalloc(sizeof(struct dir_entry), GFP_KERNEL);
+ if (!de)
+ panic("can't allocate dir_entry buffer");
+ INIT_LIST_HEAD(&de->list);
+ de->name = kstrdup(name, GFP_KERNEL);
+ de->mtime = mtime;
+ list_add(&de->list, &dir_list);
+}
+
+static void __init dir_utime(void)
+{
+ struct dir_entry *de, *tmp;
+ list_for_each_entry_safe(de, tmp, &dir_list, list) {
+ list_del(&de->list);
+ do_utime(de->name, de->mtime);
+ kfree(de->name);
+ kfree(de);
+ }
+}
+
+static __initdata time_t mtime;
+
/* cpio header parsing */
static __initdata unsigned long ino, major, minor, nlink;
uid = parsed[2];
gid = parsed[3];
nlink = parsed[4];
+ mtime = parsed[5];
body_len = parsed[6];
major = parsed[7];
minor = parsed[8];
static __initdata int dry_run;
-static inline void eat(unsigned n)
+static inline void __init eat(unsigned n)
{
victim += n;
this_header += n;
count -= n;
}
-#define N_ALIGN(len) ((((len) + 1) & ~3) + 2)
-
+static __initdata char *vcollected;
static __initdata char *collected;
static __initdata int remains;
static __initdata char *collect;
static int __init do_header(void)
{
+ if (memcmp(collected, "070707", 6)==0) {
+ error("incorrect cpio method used: use -H newc option");
+ return 1;
+ }
if (memcmp(collected, "070701", 6)) {
error("no cpio magic");
return 1;
static int __init maybe_link(void)
{
if (nlink >= 2) {
- char *old = find_link(major, minor, ino, collected);
+ char *old = find_link(major, minor, ino, mode, collected);
if (old)
return (sys_link(old, collected) < 0) ? -1 : 1;
}
return 0;
}
+static void __init clean_path(char *path, mode_t mode)
+{
+ struct stat st;
+
+ if (!sys_newlstat(path, &st) && (st.st_mode^mode) & S_IFMT) {
+ if (S_ISDIR(st.st_mode))
+ sys_rmdir(path);
+ else
+ sys_unlink(path);
+ }
+}
+
static __initdata int wfd;
static int __init do_name(void)
}
if (dry_run)
return 0;
+ clean_path(collected, mode);
if (S_ISREG(mode)) {
- if (maybe_link() >= 0) {
- wfd = sys_open(collected, O_WRONLY|O_CREAT, mode);
+ int ml = maybe_link();
+ if (ml >= 0) {
+ int openflags = O_WRONLY|O_CREAT;
+ if (ml != 1)
+ openflags |= O_TRUNC;
+ wfd = sys_open(collected, openflags, mode);
+
if (wfd >= 0) {
sys_fchown(wfd, uid, gid);
sys_fchmod(wfd, mode);
+ sys_ftruncate(wfd, body_len);
+ vcollected = kstrdup(collected, GFP_KERNEL);
state = CopyFile;
}
}
sys_mkdir(collected, mode);
sys_chown(collected, uid, gid);
sys_chmod(collected, mode);
+ dir_add(collected, mtime);
} else if (S_ISBLK(mode) || S_ISCHR(mode) ||
S_ISFIFO(mode) || S_ISSOCK(mode)) {
if (maybe_link() == 0) {
sys_mknod(collected, mode, rdev);
sys_chown(collected, uid, gid);
sys_chmod(collected, mode);
+ do_utime(collected, mtime);
}
}
return 0;
if (count >= body_len) {
sys_write(wfd, victim, body_len);
sys_close(wfd);
+ do_utime(vcollected, mtime);
+ kfree(vcollected);
eat(body_len);
state = SkipIt;
return 0;
static int __init do_symlink(void)
{
collected[N_ALIGN(name_len) + body_len] = '\0';
+ clean_path(collected, 0);
sys_symlink(collected + N_ALIGN(name_len), collected);
sys_lchown(collected, uid, gid);
+ do_utime(collected, mtime);
state = SkipIt;
next_state = Reset;
return 0;
static void __init flush_window(void);
static void __init error(char *m);
-static void __init gzip_mark(void **);
-static void __init gzip_release(void **);
-#include "../lib/inflate.c"
+#define NO_INFLATE_MALLOC
-static void __init gzip_mark(void **ptr)
-{
-}
-
-static void __init gzip_release(void **ptr)
-{
-}
+#include "../lib/inflate.c"
/* ===========================================================================
* Write the output window window[0..outcnt-1] and update crc and bytes_out.
{
int written;
dry_run = check_only;
- header_buf = malloc(110);
- symlink_buf = malloc(PATH_MAX + N_ALIGN(PATH_MAX) + 1);
- name_buf = malloc(N_ALIGN(PATH_MAX));
- window = malloc(WSIZE);
+ header_buf = kmalloc(110, GFP_KERNEL);
+ symlink_buf = kmalloc(PATH_MAX + N_ALIGN(PATH_MAX) + 1, GFP_KERNEL);
+ name_buf = kmalloc(N_ALIGN(PATH_MAX), GFP_KERNEL);
+ window = kmalloc(WSIZE, GFP_KERNEL);
if (!window || !header_buf || !symlink_buf || !name_buf)
panic("can't allocate buffers");
state = Start;
buf += inptr;
len -= inptr;
}
- free(window);
- free(name_buf);
- free(symlink_buf);
- free(header_buf);
+ dir_utime();
+ kfree(window);
+ kfree(name_buf);
+ kfree(symlink_buf);
+ kfree(header_buf);
return message;
}
+static int __initdata do_retain_initrd;
+
+static int __init retain_initrd_param(char *str)
+{
+ if (*str)
+ return 0;
+ do_retain_initrd = 1;
+ return 1;
+}
+__setup("retain_initrd", retain_initrd_param);
+
extern char __initramfs_start[], __initramfs_end[];
-#ifdef CONFIG_BLK_DEV_INITRD
#include <linux/initrd.h>
#include <linux/kexec.h>
#ifdef CONFIG_KEXEC
unsigned long crashk_start = (unsigned long)__va(crashk_res.start);
unsigned long crashk_end = (unsigned long)__va(crashk_res.end);
+#endif
+ if (do_retain_initrd)
+ goto skip;
+#ifdef CONFIG_KEXEC
/*
* If the initrd region is overlapped with crashkernel reserved region,
* free only memory that is not part of crashkernel region.
} else
#endif
free_initrd_mem(initrd_start, initrd_end);
-
+skip:
initrd_start = 0;
initrd_end = 0;
}
-#endif
-
-void __init populate_rootfs(void)
+static int __init populate_rootfs(void)
{
char *err = unpack_to_rootfs(__initramfs_start,
__initramfs_end - __initramfs_start, 0);
if (err)
panic(err);
-#ifdef CONFIG_BLK_DEV_INITRD
if (initrd_start) {
#ifdef CONFIG_BLK_DEV_RAM
int fd;
unpack_to_rootfs((char *)initrd_start,
initrd_end - initrd_start, 0);
free_initrd();
- return;
+ return 0;
}
printk("it isn't (%s); looks like an initrd\n", err);
- fd = sys_open("/initrd.image", O_WRONLY|O_CREAT, 700);
+ fd = sys_open("/initrd.image", O_WRONLY|O_CREAT, 0700);
if (fd >= 0) {
sys_write(fd, (char *)initrd_start,
initrd_end - initrd_start);
free_initrd();
#endif
}
-#endif
+ return 0;
}
+rootfs_initcall(populate_rootfs);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff